app practice questions

If oxygen is in a compound, what would its oxidation number be?

-2

Which option identifies a double replacement chemical reaction

BaCl2 + 2AgNO3 → 2AgCl + Ba(NO3)2 it exchanges compound element partners.

Which option identifies a decomposition chemical reaction?

CaCO3 → CaO + CO2 identifies a decomposition chemical reaction, as it contains a single reactant that is broken down into two.

Which of the following statements describes the process of endochondral ossification?

Chondrocytes continue to grow at the ends of the bone

Which option identifies a single replacement chemical reaction

Cu + 2AgNO3 → 2Ag + Cu(NO3)2 it contains a single free element that replaces or is substituted for one of the elements in a compound

The thymus is an endocrine system gland that secretes humoral factors. What does the thymus help an individual do?

Develop a healthy immune system

Mendel's First Law, monohybrid inheritance, is the cross between two parents with which of the following?

Different alleles for one gene

Telophase is the fourth and last stage of mitosis.

During this stage, the chromosomes gather at opposite ends of the cell and lose their distinct rod-like shapes. Two new nuclear membranes then form around each of the two regions of DNA and the spindle fibers disappear.

Most digital balances use a counterbalance in which an electromagnetic coil floats in a magnetic field through which current flows. This mechanism is known as:

Electromagnetic force restoration mechanism

The laboratory glassware of choice for storing, mixing, and pouring chemicals is the:

Erlenmeyer flask

This is an unpaired skull bone that makes up one part of the orbit of the eye, separates the nasal cavity from the brain and is the bone located deepest within the head. It differs from the other bones in the cranium in that it is a spongy bone opposed to a hard bone.

Ethmoid bone

Which of the following means under the skin? Consider the word parts.

Hypodermic

Metaphase is the second stage of mitosis.

In this stage, the chromosomes line up across the center of the cell and become connected to the spindle fiber at their centromere.

Anaphase is the third stage of mitosis.

In this stage, the sister chromatids separate into individual chromosomes and are pulled apart.

The term empirical data can best be defined as:

Information that is collected through one of the five senses

Which of the following is a property of an acid?

It releases hydrogen ions (H+) in solution

Testosterone is produced in males by______________ located between the seminiferous tubules in the testes.

Leydig cells

Which of the following is the weakest of all the intermolecular forces?

London dispersion forces

What part of the cell acts as the digestion center?

Lysosome The lysosomes break down nutrients and are responsible for all digestion that occurs within the cell.

Which of the following is/are molecular groups that form the basic structure of an amino acid?

NH2; COOH

Which of the following are the main information-carrying molecules of the cell?

Nucleic acid

The end of a muscle that is attached to a stabilized bone is referred to as the muscle's:

Origin

What kind of cell can live independently from other cells?

Prokaryotic

The type of empirical evidence that relates to non-measurable information is known as:

Qualitative evidence

The antidiuretic hormone is produced by the posterior pituitary gland. The antidiuretic hormone does which of the following?

Regulates the body's water balance

Which of the following is a secondary endocrine function of adipose tissue?

Regulating satiety

Which of the following best describes RNA?

Ribose nucleotides in strands of varying lengths

This is an unpaired skull bone that helps to make up part of the orbit of the eye and houses the pituitary gland.

Sphenoid bone

During which mitosis phase does the mitotic spindle vanish?

Telophase

In which stage of mitosis does cytokinesis become complete?

Telophase

Prophase is the first stage of mitosis. Which of the following best describes chromosomes during this stage?

The chromosomes are visibly separate

Which option best describes the term condensation?

The point at which vapor changes to gas or liquid

Temporal bones:

This is a paired set of skull bones located on either side of the head that encase the middle and inner ear. The temporal bones are crucial in the anatomy of the ear.

Parietal bones:

This is a paired set of skull bones that form the roof of and part of the sides of the skull. Each parietal bone is shaped roughly like a curved rectangle.

Occipital bone:

This is an unpaired skull bone at the back and bottom of the skull that contains a large oval hole (called the foramen magnum), which allows for the connection of the brain to the spinal cord.

Frontal bone:

This is an unpaired skull bone at the very front of the skull that helps to make up the forehead and the orbit of the eye.

What is the purpose of the arrector pili muscle?

To trap a layer of air

A small rounded process on a bone is called a:

Tubercle

Hyperdermic means

above the skin.

A transverse fracture occurs

across the long axis of a bone.

Both males and females produce small amounts of testosterone in the _____________________ gland?

adrenal glands

The liver produces the hormone

angiotensin which raises blood pressure by stimulating vasoconstriction

A molecule is a group of ____________?

atoms

The parathyroid gland controls

calcium and phosphorous levels.

Bones synthesize blood and immune cells, as well as store

calcium, phosphate, and lipids.

short bones

carpals and tarsals

The glycolysis phase of cellular respiration takes place in the

cell's cytosol.

order of life

cells, tissues, organs, organ system, organelles

An ion a positively or negatively __________________ ?

charged atom or molecule

Which of the following is an organized structure of DNA and protein found in cells?

chromosome

The thyroid gland is comprised of thyroid cells arranged into follicles. At the center of each follicle is a sticky fluid called: A

colloid

oxidation

combination of a substance w/ oxygen

A bone that sustains several breaks resulting in many small pieces between two large segments is said to be

comminuted.

There are two types of isotonic contractions:

concentric and eccentric.

Ligaments are what type of tissue?

connective

A lysosome is an organelle containing

digestive enzymes which it uses to function as the digestion and waste removal for cells, food particles, bacteria, etc.

DNA, deoxyribonucleic acid, is a

double-helix polymer and is found in all prokaryotic and eukaryotic cells.

The menses phase begins during the

early part of the follicular phase of the ovarian cycle, when progesterone, follicle-stimulating hormone (FSH), and luteinizing hormone (LH) levels are low.

__________________ Its principal functions are hormone production and internal communication and coordination.

endocrine system

The menses is the phase of the menstrual cycle during which the

endometrial lining is shed; it generally lasts from two to seven days, averaging five days, but can last longer.

Hypertrophy means an

enlargement of an organ

The ovaries produce

estrogen and progesterone.

Skeletal muscle fibers are organized into bundles called

fascicles

long bones examples are

femur, humerus

The sternum and ribs are what type of bone?

flat

The epicranius muscle raises one's eyebrows. Where is this muscle located?

forehead to galea aponeurosis

unpaired bones of the skull

frontal, occipital, sphenoid, ethmoid

An oxidizing agent, or oxidant, does which of the following?

gains electrons

The liver belongs to the _____ system

gastrointestinal

The gastrointestinal tract produces a hormone called

glucagon-like peptide 1 (GLP-1), which stimulates the beta cells of the pancreas to release insulin.

oxidizing agents include

halogens, potassium nitrate, and nitric acid.

The pancreas maintains

healthy blood sugar level

What is the term for individuals who have two identical alleles, such as AA or aa?

homogeneous

Which type of bond is formed when a hydrogen atom is attracted to a highly electronegative element?

hydrogen bond

A fracture in which one fragment is driven into the other is referred to as

impacted.

The hormone osteocalcin, produced by skeletal tissue, stimulates pancreatic beta cells to

increase production of insulin.

What is the primary purpose of catalysts?

increase rate of reaction

What is an atom called if it is electrically charged?

ion

A spiral fracture

is one that results from a twisting motion

When a muscle produces tension without changing the angle of the skeletal joint, the contraction is said to be

isometric.

When the tension in a muscle stays constant, the contraction is said to be

isotonic

Adipose tissue produces hormones involved in

lipid metabolism and storage, including leptin, which is released into circulation when you consume food and binds to receptors in the brain to trigger the satiety response.

The smooth endoplasmic reticulum (SER) function involves manufacturing and packaging, including the synthesis of

lipids and hormones which are used for the production of new cellular membranes.

condensation

liquid / solid deposition from vapor

vaporization

liquid / solid phase into gaseous phase

Freezing is the point at which

liquid changes to a solid

Boiling is the point at which

liquid changes to vapor

A volumetric flask has a

long neck that widens out to a bulb at the bottom.

The body system responsible for draining interstitial fluid and placing it into the bloodstream is the:

lympathic system

Congenital

means from birth.

Prolactin helps stimulate

milk production.

In males, testosterone regulates

muscle development, bone growth, development of secondary sex characteristics, and libido.

Eccentric contraction occurs when the

muscle tension decreases while the muscle lengthens. An example would be a reverse biceps curl, whereby a weight is slowly lowered in a controlled manner, releasing tension from the biceps brachii as the angle of the elbow joint increases.

When measuring the diameter of a virus, which unit of measure is most appropriate?

nanometer

Which type of tissue makes up the structure of the spinal cord?

nervous

Which of the following is the location in which protons and neutrons are found?

nucleus

Quantitative evidence is collected through

numerical means and can be mathematically analyzed. It is considered to be unbiased.

An oblique fracture

occurs at an angle other than 90 degrees.

An open fracture is

one in which at least one end of the broken bone breaks through the skin.

A closed fracture is

one in which the overlying skin remains intact.

An organism is composed of which of the following?

organ systems

The type of bone cell that forms new bone tissue in the growing

osteoblast

The microscopic structural unit of compact bone is called a/n:

osteon

paired bones of the skull

parietal and temporal

A finger contains three bones, which are known as

phalanges The phalanges also form the toes.

The major glands in the endocrine system are the

pineal hypothalamus pituitary thyroid parathyroid thymus adrenal pancreas ovaries testes.

Thrombopoiesis is the process in which

platelets are produced within bone marrow.

The volumetric flask is designed to contain a

precise volume of liquid at a particular temperature.

Evaporation

process when an element or compound transitions from liquid state to its gaseous state below boiling point.

Pluripotent stem cells are primitive cells that can

produce another cell identical to itself and can generate subsets of mature cells.

Atoms are composed of three particles, which include all

protons, electrons, and neutrons

Erythropoiesis is the production of

red blood cells.

The adrenocorticotropic hormone helps an individual

reduce stress

hypotrophy means the reduction of an organ

reduction of an organ

The antidiuretic hormone helps

regulate the body's water balance.

The function of lysosomes is to

remove waste as well as destroy a cell after it has died, called autolysis.

The number of people used in a study is the experiment's _______.

sample size

The endocrine system is a set of organs that

secrete hormones directly into the circulatory system

single covalent bond

share one pair of electrons

double covalent bond

shares 2 pairs of electrons

Concentric contraction involves the

shortening of a muscle in order to move a load. This happens with a biceps curl exercise, whereby the biceps brachii muscle contracts and shortens to decrease the angle of the elbow to lift the weight.

Which body system stores minerals such as calcium?

skeletal system

A colloid is a solution in which the solute particles are made up of

small clusters of molecules that are large enough to scatter light so they lend an opaque appearance to the solution while still remaining in solution.

The uterus is an example of what type of tissue?

smooth muscle

Melting is the point at which

solid changes to liquid.

Each hair root has an arrector pili muscle that responds to signals generated by the sympathetic nervous system. In cold conditions, the arrector pili contracts and makes the hair ___________________ ?

stand up.

Females produce small amounts of ______________________ in the ovaries

testosterone

A greenstick fracture is one

that affects only one side of the bone.

The moveable end of the muscle that attaches to the bone being pulled is referred to as

the muscle's insertion point

The plasma membrane that surrounds muscle fibers is called

the sarcolemma.

Muscle fibers contain a specialized type of smooth endoplasmic reticulum that stores, releases, and retrieves calcium ions called

the sarcoplasmic reticulum.

autolysis

the spontaneous breakdown of cells as they self-digest

Which of the following is a property of fatty acids?

they form emulsions

Together with all the other hairs, arrector pili creates the effect of

trapping a layer of air close to the skin to act as insulation and prevent the loss of body heat.

A covalent bond is formed when

two atoms share one electron from each atom.

An ionic bond is formed when

two oppositely charged ions are electrostatically attracted.

Hematopoiesis is the process of developing

various blood cells from pluripotent stem cells.

irregular bones

vertebrae and facial bones

Flat bone examples include...

vomer, Ribs, shoulder blades, hipbones, and cranial bones

Which option identifies a synthesis chemical reaction

2S + 3O2 → 2SO3 contains two reactants that are uniting to form a single product

females contain about ____________________ liters.

4-5

Males contain about ___________ liters

5-6

Blood represents about __% of total body weight

8% of an adult's body weight