Test 2

Question 1

The Fluid-Mosaic Model helps to explain how a cell maintains

Answer 1

homeostasis.

Question 2

Cell membranes are composed of

Answer 2

Phospholipids and protein.

Question 3

The movement of molecules from an area of higher concentration to an area of lower concentration is:

Answer 3

Diffusion

Question 4

The movement of water molecules from an area of higher concentration to an area of lower concentration is:

Answer 4

Osmosis

Question 5

Why is it dangerous to put blood cells in a hypotonic solution?

Answer 5

The cells may explode

Question 6

Endocytosis is responsible for removal of items from the cell?

Answer 6

False.

Question 7

Which of the following is NOT a characteristic of an animal plasma membrane?

Answer 7

Responsible for the synthesis of ATP.

Question 8

A combines with a substance and helps to move it across the membrane.

Answer 8

carrier protein.

Question 9

Which of the following conditions does NOT apply to facilitated transport?

Answer 9

Requires the expenditure of energy.

Question 10

Which process will transport sodium ions to the outside of the cell and potassium ions to the inside of the cell?

Answer 10

Active transport.

Question 11

Large amoeboid-type cells remove viruses and worn-out red blood cells by a process called

Answer 11

Phagocytosis.

Question 12

The process that requires a vesicle to fuse with the membrane, thereupon discharging its contents, is called

Answer 12

exocytosis.

Question 13

Because certain substances can move across the membrane while others cannot, the plasma membrane is considered

Answer 13

selectively permeable.

Question 14

Which of the following connect plasma membranes between adjacent cells together, producing a zipper-like fastening?

Answer 14

Tight junctions.

Question 15

Enzymes do what to the process of sugar in your cupboard breaking down into carbon dioxide and water?

Answer 15

Speed up.

Question 16

Enzymes can be found in

Answer 16

Saliva.

Question 17

What is ATP?

Answer 17

Our genetic currency.

Question 18

Which of the following is a site of ATP synthesis?

Answer 18

Mitochondria.

Question 19

A factor that affects enzyme activity is:

Answer 19

Temperature, PH, substrate concentration.

Question 20

A function of ATP is:

Answer 20

Mechanical work, transport work, chemical work.

Question 21

Energy can be changed from one form to another without a loss of usable energy.

Answer 21

False.

Question 22

Which of the following organisms do NOT carry on photosynthesis?

Answer 22

Animals.

Question 23

The correct description of the relationship between photosynthesis and the living world is

Answer 23

all heterotrophs are ultimately dependent upon food produced by autotrophs.

Question 24

The electromagnetic spectrum contains

Answer 24

only visible wavelengths of light, from violet to red.

Question 25

On the visible spectrum, energy content of light is greatest for

Answer 25

Violet.

Question 26

As leaves lose their color in the fall, carotenoids are the pigments that account for fall color.

Answer 26

True.

Question 27

The membranous system of flattened sacs within the stroma are

Answer 27

Thylakoids.

Question 28

Which type of reactions begin after the thylakoids absorb solar energy?

Answer 28

Light reactions

Question 29

Which of the following molecules is produced during the light reactions of photosynthesis and used in the Calvin cycle reactions?

Answer 29

NADPH and ATP

Question 30

NADPH and ATP are used in the

Answer 30

light reactions of photosynthesis.

Question 31

In which photosynthetic reaction is carbon dioxide reduced to form a carbohydrate?

Answer 31

Light.

Question 32

Thylakoids and grana are found within organelles called

Answer 32

Chloroplasts.

Question 33

The ability of plants, algae, and a few kinds of bacteria to make their own food in the presence of sunlight is called

Answer 33

Photosynthesis.

Question 34

What moves electrons from carrier to carrier, and energy is released and stored for ATP production.

Answer 34

Electron transport chain.

Question 35

Which molecule represents the end product of the Calvin cycle?

Answer 35

G3P

Question 36

Which of the following statements is NOT correct?

Answer 36

During the daylight hours, the rate of photosynthesis is less than the rate of aerobic cellular respiration, resulting in a net decrease of glucose.

Question 37

Small openings found on a leaf that allow carbon dioxide to enter are called?

Answer 37

Stomata.

Question 38

Which of the following molecules will diffuse out of the cell, enter the bloodstream, and be released from the lungs during aerobic cellular respiration?

Answer 38

Cardon dioxide.

Question 39

Which pathway for aerobic cellular respiration is located in the cytoplasm of the cell?

Answer 39

Glycolysis.

Question 40

During aerobic cellular respiration, which molecule originates from the digestive system?

Answer 40

Glucose.

Question 41

Which of the following statements is NOT correct regarding aerobic cellular respiration?

Answer 41

Cells are able to utilize all the energy from glucose when released in one burst.

Question 42

Pyruvate is the end product of the

Answer 42

Glycolysis reactions.

Question 43

Glycolysis can be used in both aerobic cellular respiration and fermentation.

Answer 43

True.

Question 44

Which of the following statements about the preparatory reaction is NOT correct?

Answer 44

It links glycolysis to the citric acid cycle.

Question 45

Which of the following pathways will result in carbon dioxide and NADH being released but not ATP?

Answer 45

Preparatory reaction.

Question 46

9. Which pathway will result in the production of four carbon dioxide molecules, two ATP molecules, NADH and FADH2?

Answer 46

Citric acid cycle.

Question 47

Which of the following molecules is NOT formed as a result of the citric acid cycle during aerobic cellular respiration?

Answer 47

Water.

Question 48

Which molecule will combine with the four-carbon oxaloacetate in the citric acid cycle to form the six-carbon citrate?

Answer 48

Acetyl-CoA

Question 49

Which molecule is the final acceptor of electrons at the end of the electron transport system in aerobic cellular respiration?

Answer 49

Oxygen.

Question 50

Which of the following overall equations represents aerobic cellular respiration?

Answer 50

C6H12O6 + 6 O2 -----> 6 CO2 + 6 H2O + energy.

Question 51

In glycolysis, glucose is converted to

Answer 51

Pyruvate.

Question 52

The NET result of a single glycolysis run is the formation of

Answer 52

2 NADH and 2 ATP.

Question 53

Under anaerobic conditions, the end-product of glycolysis is converted to

Answer 53

Lactic acid.

Question 54

During glycolysis, a 6-carbon sugar diphosphate molecule is split into two 3-carbon sugar phosphate molecules.

Answer 54

True.

Question 55

Before entering the Krebs cycle, pyruvate is converted to

Answer 55

Acetyl-CoA

Question 56

A single "turn" of the Krebs cycle will yield

Answer 56

1 ATP, 3 NADH and 1 FADH2

Question 57

The initial reaction of the Krebs cycle involves

Answer 57

involves the addition of a 2-carbon molecule to a 4-carbon molecule.

Question 58

During aerobic respiration, the last carrier protein transfers a pair of electrons to

Answer 58

oxygen.

Question 59

The function of the enzyme ATP synthase is to

Answer 59

accept a proton from inside the cell membrane as it accepts electrons.