Human Biology Exam Study Questions

Front 1

A blind experiment is one in which

Back 1

subjects do not know if they are in the experimental or control group.

Front 2

Which of the following is a hypothesis? flash light

Back 2

The flashlight won't turn on because the batteries are dead.

Front 3

The internal body temperature of a healthy human is maintained at a relatively constant 37oC. This is an example of

Back 3

homeostasis.

Front 4

Humans are members of each of the following classification groups EXCEPT:

Back 4

Archaea

Front 5

In the levels of organization in human biology, groups of cells that carry out a specific function become

Back 5

a tissue.

Front 6

One characteristic of life is that living things are composed of

Back 6

cells.

Front 7

Science can be used to evaluate and interpret situations involving

Back 7

observable events in the natural world

Front 8

Scientists believe a drug can improve memory in the elderly. Five hundred patients are divided into two groups. All patients are over 80, male, in good health, with severe memory loss. Only one group will receive the drug, the other group will receive a placebo. In this study, the group that receives the drug is the

Back 8

experimental group.

Front 9

Which agency or organization is responsible for determining the safety of food products or dietary supplements?

Back 9

FDA

Front 10

The process used to acquire scientific knowledge is generally called

Back 10

the scientific method.

Front 11

Which of the following is smallest unit of our biological classification systems?

Back 11

species

Front 12

The most complete and accurate information on scientific discoveries can be found in

Back 12

peer reviewed journals like Science or Nature.

Front 13

Which of the following characteristics is NOT a defining feature of humans?

Back 13

sexual reproduction

Front 14

When conducting an experiment to determine the effectiveness of a new drug, the experimental and control groups should be identical EXCEPT for

Back 14

the variable used for the study.

Front 15

Which of the following actions would discourage the development of antibiotic resistant bacteria?

Back 15

Take an antibiotic for the prescribed period of time even if symptoms subside sooner.

Front 16

Atoms form chemical bonds in an effort to

Back 16

fill electron shells that are occupied but not full.

Front 17

Glucose is an example of a

Back 17

monosaccharide.

Front 18

How does the H+ concentration of a solution with a pH of 5 compare to a solution with a pH of 3?

Back 18

It’'s H+ concentration is 100 times less

Front 19

Hydrogen bonds occur between

Back 19

oppositely charged regions of polar molecules that contain covalently bonded hydrogen

Front 20

where do covalent bonds occur?

Back 20

occur between atoms sharing a pair of electrons.

Front 21

The atomic number of carbon is 6, and the atomic mass (mass number) is 12. This indicates that one atom of carbon will contain

Back 21

6 protons and 6 neutrons.

Front 22

A substance that resists or minimizes changes in pH when an acid or base is added to a solution is

Back 22

a buffer.

Front 23

What type of bond is found in the fatty acid tail of an unsaturated fat that is not found in the fatty acid tail of a saturated fat?

Back 23

a double bond

Front 24

A polar molecule can be described as being:

Back 24

hydrophilic.

Front 25

A non polar molecule can be described as being

Back 25

hydrophobic

Front 26

High temperatures or changes in pH can permanently disrupt protein structure and function. This is called

Back 26

denaturation

Front 27

Which of the following is an example of a steroid?

Back 27

cholesterol

Front 28

Which type of microscope provides detailed images of the structure of organelles within cells?

Back 28

transmission electron microscope

Front 29

ATP is produced during several different stages of cellular respiration. During which of these stages is most of the ATP produced?

Back 29

electron transport chain

Front 30

The cytoskeleton:

Back 30

consists of microtubules and microfilaments

Front 31

In cellular respiration, one glucose molecule, in the presence of oxygen, will produce

Back 31

carbon dioxide, water, and about 36 ATP.

Front 32

Which of the following will diffuse directly across plasma membranes, moving right through the phospholipid bilayer?

Back 32

CO2 and O2

Front 33

ubstance X is more concentrated in the extracellular fluid than in the intracellular fluid. Substance X will move OUT of the cell by

Back 33

active transport.

Front 34

Substance Y is a lipid-soluble molecule that is more concentrated in the extracellular fluid than in the intracellular fluid. Substance Y will move INTO the cell by

Back 34

diffusion

Front 35

Most of the chemical compounds produced by the body are synthesized by the

Back 35

rough endoplasmic reticulum.

Front 36

What molecule in the structure of the plasma membrane prevents the membrane from becoming too fluid?

Back 36

cholesterol

Front 37

Which of the following is present in eukaryotic cells but not in prokaryotic cells?

Back 37

a nuclear membrane

Front 38

osmosis is

Back 38

the flow of water across the cell membrane

Front 39

What does the sodium potassium pump require to function normally?

Back 39

ATP

Front 40

Which type of cellular vesicle stores materials destined for release via exocytosis?

Back 40

secretory

Front 41

Which organelle is responsible for sorting proteins to their appropriate destinations in a cell?

Back 41

Golgi complex

Front 42

Which major biological molecules make up the plasma membrane?

Back 42

The plasma membrane is made up of lipids, carbohydrates, and proteins.

Front 43

what is passive transport?

Back 43

moves from an area of higher concentration to a region of lower concentration

Front 44

what is active transport?

Back 44

is substance moving from against its concentration gradient requires energy to move across the membrane

Front 45

What is the difference between passive and active transport?

Back 45

Active requires energy; passive does not.

Front 46

How does facilitated diffusion differ from simple diffusion?

Back 46

facilitated diffusion needs proteins to move molecules across the membrane

Front 47

Consider this hypothetical situation. Inside the cell you have 357 ions of substance A, 220 ions of substance B, and 520 molecules of substance C (which is a gas). Outside the cell you have 984 ions of substance A, 165 ions of substance B, and 1650 molecules of substance C (which is a gas).

Back 47

substance A will move into the cell passively; substance B will move out of the cell passively; substance C will move into the cell passively.

Front 48

Pinocytosis and phagocytosis are types of _

Back 48

endocytosis

Front 49

Engulfing bacteria could be described as an example of ________.

Back 49

phagosytosis

Front 50

When particles are engulfed by endocytosis, what is the wall of the vesicle made of?

Back 50

plasma membrane