Biology Test 3

Corals and jellyfish belong to the phylum

Cnidaria

what two features do all tissues share?

All tissues are composed of cells in an extracellular matrix and make up organs.

(CH17) arrange from largest category (most species) to smallest (fewest species)

Eukarya, Animalia, Mollusks, Bivalves, Scallops

snails and squids belong to the phylum

Mollusca

Pinworms and hookworms belong to the phylum

Nematoda

A chemical that travels from a sending neuron to a receiving neuron is called a(n)

neurotransmitter

if you wanted to stop transmission from one neuron to another, you would want to destroy all

neurotransmitters

in the diagram, the squares which are transported from a neuron, through the synaptic cleft, and received by the receptors of another cell are called

neurotransmitters

complete concept map (evolution might result in)

new structures analogous, homologous, tiktaalik, limbs common function, bony fish, amphibians gills

T/F: A negative feedback system allows slight fluctuations in body temperature

True

T/F: An organ is defined as consisting of two or more interacting tissues

True

T/F: Arthropods means "jointed-foot"

True

T/F: At the beach, you find an animal with a two part shell, a muscular foot, and a radula. You have found a mollusk.

True

T/F: During action potential, sodium ions

True

T/F: Feathers, whether on an ancient dinosaur or a modern bird, can help in thermoregulation by holding onto body heat

True

T/F: If you found a dinosaur fossil in which the nasal cavity cross section was proportionally as large as in a dog, you probably would have found an endothermic dinosaur

True

T/F: If you were eating sea urchin and starfish soup, you would be eating echinoderms

True

T/F: Most burn victims who have substantial damage to their skin are prescribed powerful antibiotics because the intact skin is the first defense against bacterial infections.

True

T/F: Nematodes are protected from environmental hazards in part by their cuticle

True

T/F: Neurotransmitters released from a "sending" cell must travel across a tiny space called a synaptic cleft.

True

T/F: The cross-sectional area of the nasal cavity can be an important indicator of whether an animal is an endotherm or an ectotherm

True

T/F: The dendrite is the receiving end of a synapse.

True

T/F: The reason we can tell light from sound is because different neurons transmit these different stimuli

True

T/F: The sodium-potassium pump is a membrane protein

True

(given a tissue sample) chemical tests show that it secretes collagen and stores fat, so you label it

adipose

which is not a reptile?

bat

if you were looking at a model of a sphere of animals cells with a hollow, fluid-filled center, you would identify it as a

blastula

T/F: The only type of connective tissue in which collagen is not secreted is

blood

click on area of brain responsible for interpreting action potentials originating in the ear

blue section middle box

the type of connective tissue with a mineralized extracellular matrix is

bone

What was most key in the transition of fish into amphibians?

both lungs and limbs

the function of vertebrae is to

both protect the nerve cord and provide attachment points for muscles.

select branch on primate phylogeny where Australopithecus would be placed

box furthest right

click on box that touches the photoreceptor cells of the eye

box on red and purple things

what is the source of energy used to power the sodium-potassium pump?

breakdown of ATP

drag each linking phrase on the left to the pair of systems it best connects

breaks down food sends signals secretes hormones protects major organs connects via lymphatic system prevents water loss

the respiratory, digestive, urinary, integumentary systems all interact with the ? system to maintain homeostasis

circulatory

receptors for the general senses are

found throughout the body

the embryonic germ layer of tissues in animals that develop into the skin and nervous system is the

ectoderm

the embryonic germ layer of tissue that develops into the digestive tract and organs derived from the digestive tract is the

endoderm

an animal that maintains its body temperature by using heat generated from its own metabolism is an

endotherm

the tissue type that acts as a lining of organs, serves in absorption and secretion, and also conducts gas diffusion is

epithelial

which tissue within skin is responsible for producing sweat?

epithelial

what is a principal mechanism by which endotherms obtain body heat?

generate heat via metabolism

is each picture or response part of your immune's system's innate response, adaptive response, or both?

innate: skin, high levels adaptive: antibody, the secondary both: macrophages, interleukins

arrange labels in order to describe how light becomes an image

light passes through cornea light passes through pupil lens bends light light passes through layers of neurons light reaches photoreceptors receptor potentials other neurons the brain interprets

what traits are present in amphibians but not in fish?

limbs

if asked to point to the part of a fruit fly embryo that develops into the muscles and reproductive system, point to

mesoderm

the three body parts of a mollusk?

visceral mass, foot, mantle

which is NOT one of the general senses?

vision

label each component of the initial steps in adaptive immunity

(clockwise from bottom left box) Macrophage binding, lymph node, pathogen, macrophage, antigen, helper T

in hypothetical animal body shown, match organ system with its role in promoting homeostasis

(clockwise from bottom left) brings in, expels carbon, helps regulate, helps adjust chemical

in hypothetical animal body shown, label each organ system that interacts to maintain homeostasis.

(clockwise from bottom left) digestive, respiratory, integumentary, circulatory, urinary

label ear structures in image below

(clockwise) hair cell, eardrum , hammer, anvil, stirrup, oval window, auditory nerve, cochlea, cross section

label parts of neuron

(counter clockwise from top box) nucleus, axon, synapse, myelin sheath, dendrite

match each part of a neuron with its function

(counterclockwise from top box) transmits action, transmits neural, increases, receives

label each component of the cell-mediated and humoral responses

(left side top to bottom) cytokine, cell-mediated, memory T, effector T (right side top to bottom) helper T, humoral, B cell, antibody

graph shows the production of antibodies during the humoral response to antigen exposure. drag labels to correct location on graph.

(left side top to bottom) primary immune, first exposure, initial production (right side top to bottom) secondary, swift, second

complete sentences: The hepatitis B vaccine contains ? from the surface of the hepatitis B virus. After receiving the hepititis B vaccine, the immune system produces ? that remain in the body. If the vaccinated individual is later exposed to the hepititis B virus, a ? immune response is triggered. If the ? change, then the immune system will not recognize them. Scientists would have to develop a new vaccine.

1) antigens 2) memory cells 3) secondary 4) antigens

complete sentences: he senses of smell and taste are both forms of ?. The sense of taste depends on sensory neuron activity in taste buds, which are housed at the base of ? on the surface of the tongue. The moist lining of the nose is essential to the sense of smell, as ? is essential to the sense of taste. Chemoreceptors on a ? cell membrane bind chemicals and then send a message to the brain. A ? is a chemical that elicits a response in other members of the same species.

1) chemoreception 2) papillae 3) saliva 4) sensory 5) pheromone

complete sentences: A specific B cell is activated when a(n) ? from a pathogen binds to one of the ? on its surface. Activation also requires ? from helper T cells. This activated cell then begins dividing into memory B cells, which will participate in the secondary immune response, and ? cells that will act as protein factories in this immune response. During the primary immune response, these cells secrete ?. During the secondary immune response, the ? cells divide rapidly, giving rise to protein-producing ? cells that act quickly against the pathogen.

1) antigen, antibodies, cytokines 2) plasma 3) antibodies 4) Memory B, plasma

complete sentences below: The ? system extracts nutrients from food. Digested nutrients enter the ? system and are distributed throughout the body. Food molecules enter body cells, which extract energy from them in ?. This process uses ? and produces ?, which then leaves the cell and enters the ? system. At the lungs, the gas produced in cells diffuses from the ? system into the ? system. It is then exhaled. The next breath brings ? into the lungs, which diffuses into the blood. Cell metabolism also produces wastes. The ? system carries these wastes to the ? system for excretion. Heat produced during cellular respiration warms the blood and leaves the body from the ? system.

1) digestive 2) circulatory 3) cellular respiration 4) oxygen 5) carbon dioxide 6) circulatory 7) circulatory 8) respiratory 9) oxygen 10) circulatory 11) urinary 12) integumentary

complete sentences below: An ? has internal temperature-regulating mechanisms. An ? must rely on external conditions to maintain body temperature. The regulation of body temperature in animals is called ?, and it is important in maintaining the metabolism of the organism.

1) endotherm 2) ectotherm 3) thermoregulation

complete sentences using labels of major brain regions: Jon has never hiccupped and apparently cannot do so; he may have damage to his ?. The ? includes the medulla oblongata, the pons, and the cerebellum. The ? includes the thalamus, hypothalamus, and cerebrum. Sue Anne's body has difficulty regulating its core temperature. She may have damage to this part of her brain: ?. An intelligence quotient (IQ) test might be used to determine the capacity of your ?. After a sports injury resulting in a concussion, Cyril has been detecting a strange odor. He may have damage to the ? lobe of his cerebral cortex.

1) medulla oblongata 2) hindbrain 3) forebrain 4) hypothalamus 5) cerebrum 6) temporal

complete sentences below: A(n) ? is the primary cell type responsible for communication in the ? system. The ? is an example of an organ composed of these cells. The ? system gives the body a rigid framework, thanks to the ? tissue it is made of. The ? system is lined with one layer of ? cells, making it a type of ? tissue that absorbs nutrients from food.

1) neuron 2) nervous 3) brain 4) skeletal 5) connective 6) digestive 7) columnar 8) simple epithelial

scientists put fluorescent tag on carbon atoms in sample of sugar, put events in most logical order

1) sugary food enters 2) the digestive system 3) food molecules enter 4) blood vessels deliver 5) cellular respiration 6) carbon dioxide enters 7) carbon dioxide leaves

click on all synapses in the image

2 boxes where the 2 things connect

A sodium-potassium pump uses one ATP during each cycle. How many glucose molecules does the cell break down by aerobic respiration to power this one pump for a minute?

20

classify characteristics into phylum they describe Flatworms Cnidarians Chordates Roundworms Arthropods Sponges Annelids Mollusks Echinoderms

3 germ layers, protostomes, gastrula stage: flatworms, roundworms, arthropods, mollusks, annelids chordates/echinoderms: 3 germ layers, deuterosomes, gastrula stage cnidarians: 2 germs layers, gastrula sponges: no germ layer

aprrox when did amphibians begin colonizing land?

375 million years ago

classify statement into correct arthropod group Millipedes and centipedes Crustaceans Insects Chelicerates

All: exoskeleton and molt Millipedes and centipedes: head and repeating subunits Crustaceans: mandibles Insects: bees, most diverse Chelicerates: arachnids

Leeches and earthworms belong to the phylum

Annelida

classify description into correct animal group Annelids Echinoderms Cnidarians Sponges: Roundworms Platyhelminthes Arthopods: Mollusks:

Annelids: segmented Echinoderms: deuterosomes Cnidarians: two germ, jellyfish Sponges: no true tissues Roundworms: pseudo Platyhelminthes: no coelom, flatworms Arthopods: possess coelom, jointed appendages Mollusks: mantle, visceral mass

spiders and scorpions belong to the phylum

Arthropoda

select ways immune system may shift away from homeostasis to fight infection

B cells, cytokines, blood vessels

drag description to animal phyla which is most closely associated Chordates Echinoderms Cnidarians Sponges Roundworms Flatworms Arthopods

Chordates: turtles, cranium no backbone Echinoderms: water vascular Cnidarians: radial, jellyfish Sponges: porous Roundworms: pseudocoelom Flatworms: no coelom Arthopods: exoskeleton, crustacean

Sea cucumbers and sea urchins belong to the phylum

Echinodermata

in what phylum is the sea urchin?

Echinodermata

T/F: Some animals are autotrophs

False

T/F: The most common way that living organisms maintain homeostasis is by positive feedback mechanisms

False

T/F: The sodium-potassium pump moves sodium ions into the neuron and potassium ions out of the neuron

False

T/F: The tissue that gives the skull its shape is shared with plants

False

T/F: if a neuron is at rest, the concentration of potassium ions is greatest outside the cell and the concentration of sodium ions is greatest inside the cell

False

match characteristic with group Fishes: Tunicates & lancelets: Hagfishes: Amphibians: Nonavian reptiles: Birds:

Fishes: largest number Tunicates & lancelets: marine chordates Hagfishes: cranium Amphibians: frog Nonavian reptiles: turtle Birds: endothermic

classify each primate into its group Hominin Monkey Non-hominin hominid Prosimian Non-hominid hominoid

Hominin: human Monkey: spider monkey Non-hominin hominid: gorilla, orangutan Prosimian: lemur Non-hominid hominoid: gibbon

select statement that correctly describes evolution and spread of homo sapiens

Homo sapiens evolved in Africa

match each eye description with statement it describes

Iris: Regulates Lens: Focuses Cornea: Light first Rod cell: Provides Cone cell: Photoreceptor Optic nerve: Transfers

match label to correct type of connective tissue: Loose and dense connective tissue Adipose tissue Blood Cartilage Bone

Loose and dense connective tissue: elastin Adipose tissue: occupies small volume Blood: fluid Cartilage: collagen fibers Bone: calcium and phosphorus

what best describes how a neuron fires?

Na+ ions cross the plasma membrane

match each special sense to its correct description Olfactory receptors that can bind to airborne molecules: Chemoreceptors that can bind to dissolved molecules: Rods and cones that absorb light: Mechanoreceptors that are stimulated by air pressure waves:

Olfactory receptors that can bind to airborne molecules: smell Chemoreceptors that can bind to dissolved molecules: taste Rods and cones that absorb light: vision Mechanoreceptors that are stimulated by air pressure waves: hearing

drop labels to put events of primary and secondary immune responses in correct order

Primary: new, macrophages engulf, macrophages display, Helper T cells, interleukins, cytotoxic, antibodies, pathogens destroyed secondary: pathogen with familiar, memory B cells, pathogens destroyed

Match each white blood cell with its description: Release histamine Engulf bacteria Initiate both arms of adaptive immunity Destroy damaged or virus-infected cells Secrete antibodies

Release histamine: Basophilis Engulf bacteria: macrophages Initiate both arms of adaptive immunity: Helper T Destroy damaged or virus-infected cells: Cytotoxic Secrete antibodies: B cells

match body condition with way negative feedback system might react Salt concentration becomes too high in the blood. Blood pressure is too low. Blood sugar is too high. Carbon dioxide levels in the blood are too high. The external temperature drops quickly.

Salt concentration becomes too high in the blood: salt is excreted Blood pressure is too low: heart beats more quickly Blood sugar is too high: cells absorbs sugars Carbon dioxide levels in the blood are too high: breathing rate increases The external temperature drops quickly: body shivers

Drugs called selective serotonin reuptake inhibitors (SSRIs), block reuptake of serotonin and are used to treat depression. which would occur in a patient given SSRI?

Serotonin levels would increase

classify description as type of epithelial tissue Simple squamous Simple cuboidal Simple columnar Stratified squamous

Simple squamous: one layer of flattened, lining of lungs Simple cuboidal: one layer of squared-shaped, secrets in kidneys Simple columnar: single layer, secretes in intestines Stratified squamous: multiple layers, protects skin

which is a characteristic of reptiles?

They are ectotherms with lungs

the most successful phylum with regards to diversity and numbers is

arthropoda

click all sentences that are example of negative feedback

a pig, a mouse, roots

what is detected with the general senses?

a tap on the shoulder

if image represented temperature control in animal, where would the hypothalamus act?

as step 2

What might an ectotherm do to conserve or obtain body heat?

all answers correct

an action potential is generated when the general senses detects

all answers correct

characteristics shared by primates include

all answers correct

different types of animal tissue include

all answers correct

hominids include

all answers correct

the nervous system controls

all answers correct

classify description into immune disorder it describes

allergy: Dave, Bailey autoimmune: Ray immunodeficiency: JD, Tolu

(preparing images) you see "first land vertebrates", look for pictures of

amphibians

select all true about a neuron's function

an action potential; during the peak; during an action potential

The study of an organism's structure is

anatomy

though animals are diverse, some features are only found in non animals. which is not a feature of animals?

animals are unicellular and multicellular

Cnidarians are animals found in ______ environments.

aquatic

a neuron recharges when Na+ ions

are actively pumped against their concentration gradient

The nerve that conducts impulses to the area of the brain that determines sound is the

auditory nerve

if you wanted to study the part of a neuron that carries electrical signals away from the cell body, you would look for what part?

axon

the part of the neuron that is usually a single long extension that conducts an impulse to a muscle or another neuron is the

axon

(picture of a butterfly) you conclude the butterfly has

bilateral symmetry

how do scientists believe that an asteroid impact in the Yucatan peninsula caused a worldwide mass extinction?

by blocking the sun and inhibiting photosynthesis

(you receive a skin biopsy sample) sample shows several groups of cancerous cells in the epithelium, so you say you found several

carcinomas

the rounded part of a neuron containing the nucleus and mitochondria is the

cell body

(Ch23) classify as cell, tissue, organ, or organ system: simple columnar epithelium, neuron, blood, cardiac muscle, skeleton, skin, brain

cell: neuron tissue: blood, cardiac muscle, simple columnar epithelium organ: skin, brain organ system: skeleton

the division of the nervous system that integrates sensory information and coordinates the body's response is the

central nervous system

(CH24) place terms in best location on concept map

central nervous system, sensory pathways, motor pathways gray matter, white matter, somatic nervous system, autonomic nervous system voluntary skeletal muscles

which is a characteristic of annelids?

cephalization

if asked to point to the place on a model of the brain where subconscious muscular movements are coordinated, you would point to the

cerebellum

in humans, if you wanted to eliminate the ability to smell dung, which type of receptor should be changed?

chemoreceptor

when you smell the salty air and seaweed, what is being activated?

chemoreceptor

the closest living relatives to humans on the evolutionary tree are

chimpanzees

drop each label into correct location within diagram of the vertebrate eye

clockwise from bottom left box) lens, cornea, pupil, iris, retina, sclera, choroid

At the snail-shaped ____ of the inner ear, sound is transacted into nerve impulses.

cochlea

A fluid-filled body cavity that forms completely within the mesoderm of animals is a

coelom

the tissue type that provides support, transport, and insulation is

connective

the primary function of muscle tissue is

contraction

A bony or cartilaginous structure that surrounds and protects the brain of chordates is a(an)

cranium

the part of a neuron that is usually highly branched and receives inout from other neurons is the

dendrite

which enabled Homo sapiens to develop complex cultures unlike other members of the Homo genus?

development of agriculture

which is not controlled by the nervous system?

diffusion of water into cells

The systems that work together to acquire and use energy are

digestive, respiratory, and circulatory

An invertebrate is an animal that

does not have a backbone

click all examples of placental mammals

dolphin, bat, primate

characteristics or examples of sponges?

filter feed, true tissues absent, male and female sex cells

what event happened first in evolutionary history and which happened most recently

first: the earliest animals arose recent: vertebrates

which does not have a true coelom?

flatworm

Platyhelminthes include which organism?

flukes

a vertebrate is an animal that

has a backbone

characteristics common to all animals?

heterotrophic, multicellularity, embryos with blastula stage

drugs called antihistamines help treat allergies. what is the function of histamine in the human immune system?

histamine dilates

classify labels as relating to cell-mediated immunity or humoral immunity

humoral: B cells, Helper T cells, antigens, Memory B, plasma, antibodies, kills bacterial invaders cell-mediated: cytotoxic T, Helper T, antigens, Memory T, kills cancer, kills bacterial invaders

if you were working with a patient with brain damage that who had serious problems with homeostasis, you would suspect the brain damage included the

hypothalamus

classify descriptions as leading to either an increase or a decrease in body temperature

increase: constriction of blood vessels, rubbing your hands, shivering decrease: your pet dog, dilation of blood vessels, standing in mist

classify each description into the correct type of nonspecific immune response

inflammation: uses histamine, increases blood vessel, bronchitis fever: kills virus, reduction in blood iron complement: punctures bacterial cell

select functions of different types of connective tissues

insulation, support, adhesion, attachment, transport substances

the body's first line of defense against disease-causing microorganisms is

intact skin

if you were asked to list systems that are most critical for protecting the body from external threats, you would list

integumentary, immune, and urinary

The type of neuron that connects one neuron to another within the central nervous system is the

interneuron

an atom or molecule with an electrical charge is an

ion

The size of the opening for light coming into the eye is regulated by the

iris

which is a jawless fish?

lamprey

characteristics or examples of phylum Annelida?

leeches, simple brains, many segments, aquatic or terrestrial

analyze image. then, match each description with its part number below

macrophage helper T clonal - T cells effector helper cytotoxic B cell clonal - B cells plasma cell

when you hear the waves, what is being activated?

mechanoreceptor?

if asked to point to the place on a model of the brain where essential functions such as breathing, blood pressure, heart rate, and swallowing are regulated, you would point to the

medulla oblongata

Octopuses and squids are cephalopods and are members of which group?

mollusks

clams are

mollusks

the type of neuron that conducts its message from the central nervous center system toward an effector is the

motor neuron

blood flow in increased by vasodilation; which tissue is responsible for vasodilation?

muscle

the tissue type that provides contractions that power movement is

muscle

which is not an animal?

mushroom

an action that counters an existing condition is called

negative feedback

the tissue type that receives, processes, and transmits info by providing a communication network among cells is

nervous

The systems that coordinate communication are

nervous and endocrine

if you added Nuerons and Nueroglia to the concept math, what linking phrases might you use?

nervous tissues, neurons stimulate, neuroglia support

classify images as one of the four tissue types

nervous: cells may have myelin sheath, brain muscle: could be striated, skeletal cardiac or smooth connective: blood, bone & cartilage epithelial: free surface, pink skin pic, simple squamous

the tissues that make up the spinal cord and brain consists of

neurons and neuroglia

selects features all chordates have at some point

notochord, dorsal nerve chord, pharyngeal slits, postanal tail

what is true of olfactory cells and taste buds?

olfactory receptors are chemoreceptors and taste buds are chemoreceptors

(research what the eye is) contains nerves, muscles, and blood cells; you decide it is an

organ

consider how you might add pathogens and infection to the concept map. which phrases are accurate statements?

pathogens cause infection, infection of a cell, pathogens compete

which is not classified as a mammal?

penguin

In humans, which type of receptor is used primarily to detect light?

photoreceptor

when you look at the water, what is being activated?

photoreceptor

the study of the function of all of the body's parts is

physiology

Cnidarians bodies are one of two forms. A ? consists of a sessile stalk; a ? is free-swimming

polyp; medusa

when a blood cot begins to form, the enzyme thrombin is formed. this is an example of ? feedback

positive

which is found in a group other than animals?

they have cell walls

if you were using electrodes and chemical tests to find a resting neuron, you would look for a neuron in which

potassium ions are more concentrated

the opening for light to enter into the eye is the

pupil

birds are classified as

reptiles

classify statement as resting potential, threshold potential, or action potential

resting: constant, sodium channels closed threshold: if this is reached, slightly above action: membrane, sodium channels open & close

in the neuron, the sodium-potassium pump helps to

restore resting potential

echinoderms have symmetry involving five parts, what organism is most closely related to the sand dollar?

sea star

segmentation occurs in annelids, arthropods, and chordates. what can be concluded about segmentation?

segmentation evolved multiple times

a phenomenon in which sensations become less noticeable with prolonged exposure is called

sensory adaptation

the three major components of the human nervous system are

sensory input, sensory integration, and motor response

the type of neuron that brings information toward the central nervous system is the

sensory neuron

the three types of neurons in the nervous system of humans are

sensory neurons, interneurons, and motor neurons

what is the relationship between sensory pathways and motor pathways?

sensory pathways carry information

put events of sensing information in correct order

sensory receptor energy action potentials the brain receives the brain interprets

Which is a cartilaginous fish?

shark

characteristics or examples of phylum Platyhelminthes?

simple brains, hydrostatic, tapeworms, cells exchange gases, lack circulatory

the type of epithelial tissue that forms a single layer of elongated cells is

simple columnar

the type of epithelial tissue that forms a single layer of cube-shaped cells is

simple cuboidal

the type of epithelial tissue that forms a single layer of flattened cells is

simple squamous

several structures interact as a lynx sees and reacts to its prey. organize them from smallest to largest.

sodium ion, ATP, sodium channel, axon, neuron, nervous system, lynx

the sodium-potassium pump functions to pump

sodium ions out of the cell and potassium ions into the cell

(observing test subject move his arm) you decide the movement is due to muscle that is

skeletal

patients with muscular dystrophy; which muscles are affected by muscular dystrophy?

skeletal muscle only

classify as skeletal, cardiac, or smooth,

skeletal: elongated cells, attached to bones, striated voluntary contraction cardiac: branched, short electrically coupled cells, striated involuntary contraction smooth: lining of blood vessels, spindle-shaped cells

muscle tissue that is controlled involuntarily and has no striations is

smooth

the division of the peripheral nervous system that carries signals to voluntary muscles is the

somatic system

the part of the central nervous system that conducts information to and from the brain is the

spinal cord

in animal bodies, the shivering response and the movement of muscles generate heat. what part of the negative feedback loops shown in the figure does this represent?

step 7

put events of action potential generation in order form first to last

stimulus a few sodium sodium ions begin threshold many sodium channels sodium ions pour potassium channels open potassium channels close

all cnidarians share the ability to do which?

sting predators and prey

the type of epithelial tissue that forms multiple layers of flattened cells is

stratified squamous

the diagram shows

synapse

the junctions between one neuron and another are called

synapses

scientist researching the effects of naturally acquired immunity; what conclusions can they make from these results?

the concentration, the yearly infection, both naturally

the "Cambrian explosion" refers to the

the origination of most major phyla of animals.

when you feel the sun on your skin, what is being activated?

thermoreceptor

which characteristic do all animals share?

they are multicellular eukaryotes

groups of cells that interact and provide a specific function are defined as

tissue

the general sensory receptors in the skin can respond to what types of stimuli?

tissue damage, skin compression, hair movement, temperature change

which is an amphibian?

toad

in addition to the frog, what organisms are classified as modern amphibians?

toads, salamanders

(CH29) drag descriptions to their proper location on the diagram of lymphatic and immune system organs and tissues

tonsil site of T cell maturation lymph node contains lymphocytes carries lymph lymph tissue

click all lineages with true coelom

top 3 and annelids/mollusks

"Investigating Life: Sniffing Out the Origin of Feathers"; classify about thermoregulation as true or false

true: compared, shivering, scientists false: the enzymes, endotherms

select all characteristics present in Homo

walked upright, used tools, includes only surviving species

the nervous tissue that consists of myelinated axons transmitting information throughout the central nervous system is the

white matter

click on part of brain that processes and interprets images

yellow section far right box