Final Ivy Tech
plant cells can communicate with each other via _____, as indicated by the arrow in the picture
plasmodesmata
what is the first step in energy flow through an ecosystem
producers absorb solar energy
the main structural component of a plant cell wall is
cellulose
which of the following is not a function of the skeletal system
communication
the structure of bone tissue suits the function. which of the following is adapted to support weight and withstand torsion stresses?
compact bone
Inside the chloroplasts, chlorophyll is found in the
thylakoid membrane
water is a major limiting factor in
tundra
most metabolic wastes leave the body through the production of --- by the ---
urine, urinary system
which of the following has not contributed to declines in the world fish catch in years
use of aquaculture;aquafarming
what molecule most directly provides energy you need for your muscles
ATP
You are looking at a cell under a microscope and see what appears to be several X structures being pulled to each side of the cell. What stage of meiosis are you looking at?
Anaphase I
the central dogma of molecular biology states that the information contained withint gene flow in which direction
DNA to mRNA to protein
DNA replication makes a --- copy of the dna strand while transcription makes a ----- copy of the strand
DNA; mRNA
While Jeff was looking under the microscope at cells in different stages of mitosis he commented on the fact that many cells were in the same stage. If you were looking under the compound light microscope at an onion root tip, what stage would the majority of the cells be in the cell cycle?
Interphase
the best defintion of a nutrient is
a food component whihc can be stored in the body for future need
muscle tone is
a state of sustained partial contraction
forests help to regular the global climate by
absorbing CO2
which is not a funciton of blood
all are function
which ecosystem makes approximately 70% of the earths surface
aquatic; marine
chloroplasts and mitochondria are similar in that they both
are involved in protein production for the cell
which organisms have been modified to produce insulin, blood clotting factor VIII, and human growth hormone
bacteria
a cell being observed under a microscope has a cell wall, plasma membrane, ribosomes, and chromosomal material that is not found in a nucleaus. based on this information, the cell could be a
bacterial cell
A karyotype shows chromosomes arranged by
banding patterns, size, and shape
As humans continues to use fossil fuels as a primary source of energy, the amount of carbon entereing the atmophere from fossil fuel combustion will continue to increase dramatically. What is the effect of large-scale deforestation on the carbon in the atmosphere?
because trees produce carbon dioxide, the amount of carbon in the atmosphere will decrease with their wide scale removal fromt eh atmosphere for photosynthesis
energy needs are supplied by
carbohydrates, lipids, proteins
the four main categories of organic macromolecules are
carbohydrates, lipids, proteins, nucleic acids
which of the following is not a function of meiosis
cause an organism to grow
which of the following lists the levels of biological organization
cell, cardiac muscle, heart, cardiovascular system, human
plant cells have plasmodesmata that
connect the cytoplasm of one cell with that of another.
which of the following methods may help conserve waterby reducing amount used for agriculture
contour with no till farming
which of the following statements described the function of chloroplast?
converts light energy to chemical energy
all cells have some characterists in common, both prokaryotic and eukaryotic cells have
cytoplasm, a plasma membrane, and DNA
which fo the following would have the greatest influence in creating more sustainable urban society
decreasing the amount of land that is altered
carrie would like to observe the cilia on the surface of a live paramecium-- a single celled organism. the best device would be a
electron microscope
which of the following is not a function of the digestive system
eliminate nitrogenous waste
In an atom with a neutral overall charge,
equal number of protons and electrons
without tight junctions in certain tissues
fluids may leak out past the barrier the junction would create
Which of the following is an incorrect match of molecule to the location where it is principally used
glucose-lysosome
humans store excess polysaccharides in the form of
glycogen
which of the following correct sequence of events in cellular respiration
glycolysis, citric acid, electron transport
where do the vesicles that are being made from the cell become modified and packaged
golgi apparatus
the stack of thylakoids labeled A in this figure is called
granum
what does the folding of mitochondrial inner membrane provide?
greater surface area for ATP production
the major cause of loss in biodiversity is
habitat loss
some insects can stride on the surface of water because water
has surface tension
human society in its current form is unsustainable because
important natural resources are being consumed more quickly than they can be replenished.
in aquatic ecosystems, primary productivity is more dependent on
inorganic nutrients
digestion in humans and earthworms
is similar in that both organisms, digestion is an extracellular process, occurring in a complete digestive tract.
if your body is dehydrated the control center in the brain will stimulate the release of a hromone which causes the reabsorption of water n the blood during formaiton. When the control center sensed that enough water is reabsorbed, it will stop the release fo the hormone. This is an example of
lack of control over homeostasis
compared with a eukaryotic cell a prokaryote___
lacks organelles beyond ribosomes
the increased efficiency of fishing has lead to
loss of biodiversity
desertification and deforestation are similar in that both involve
loss of plant and animal life in an area
lipids
may be used ot make certain hormones and vitamin D
The study of comparative genomics has given researchers the ability to look at multiple genomes from different species, which has lead to new ideas about the evolutionary history of organisms. The conclusion is that
modern vertebrate species evolved fromt he same ancestors and a large portion of their genome is conserved
biodiversity increases the consumptive valuse of land, meaning that
more value can be derived fromt he more diverse products produced
movement of body parts directly requires
muscular and skeletal system
Isotopes of the same element have different
neutrons
the failure of sister chromatids to separate during meiosis is called
nondisjunction
below is a diagram of bacterium. what structure does Y represent
nucleoid
which feature is found in all cells
nucleoid region that contains DNA
the single most important risk for skin cancer is
overexposure to UV radiation
the removal of electrons and/or hydrogen atoms from a substrate is called
oxidation
the final accepts of hydrogen ions in aerobic cellular respiration is
oxygen
which of the following is not a product of cellular respiration
oxygen
fermentation occurs if
oxygen is not present
biones are defined by
plants, animals, and inorganic matter
Multipurpose trees are useful for what purpose?
providing additional products, as well as serving as a windbreak
the addition of electrons and or hydrogen atoms to substrate is called what
reduction
Hydropower and wind power are similar in that both are
renewable energy sources
which of the following organelles is not surrounded by a membrane
ribosomes
which of the following is the correct sequence for an altered protein that is secreted from the cell
rough endoplasmic reticulum - Golgi apparatus - plasma membrane
muscle tissue has all of the following properties except
secretion
the nervous system and endocrine system control the bodys functions
sending out messages by nerve impulse and hormones
which body system produces red blood cells
skeletal
plants store their sugar in the form of
starch
cell size is limited because____ is critical to a cell's function.
surface area to volume ratio
which creates the least amount of soil erosion
use of drip irrigation
which of the following are greenhouse gases?
methane and carbon dioxie
how does climate change affect oceans
ph level of oceans shift to tmore acidic environemtn leading to stress and then extinction
Susan was examining a cell under the microscope and noticed the formaiton of a cell plate in the midline of the cell and the formaiton of nuclei at opposite poles of the cell. The cell under examination was most likely a
plant cell undergoing cytokinesis
what must materials pass through to enter or leave the cell
plasma membrane