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Flashcards in Test 3 Deck (25):
1

An animal or plant can make the cell membrane more viscous by using

Saturated fatty acids

2

What happens to an animal cell in a hypertonic solution.

It shrinks

3

In which direction do the sodium (Na+) and potassium (K+) ions move in the sodium/potassium pump?

Potassium (K+) into the cell, sodium (Na+) out

4

Respiration is a --- reaction that --- energy?

Catabolic
Releases

5

In anaerobic respiration, pyruvate is converted into --- in animals and --- in plants.

Lactate
Ethanol

6

Krebs cycle turns --- into CO2, and produces --- NADH molecules

Pyruvate
6

7

In aerobic respiration, how many carbon dioxide molecules are produced from the breakdown of one glucose molecule?

6

8

Apart from ATP and NADH, Krebs cycle also stores Chemical energy as the molecule:

2FADH,2

9

Give an example off exocytosis

Tears and milk

10

State the second law of thermodynamics

Entropy (disorder) is always increasing, so things fall apart and break down, because the general trend is towards disorder.

11

Energy of movement is called

Kinetic energy

12

In the catabolism of food, apart from the electron transport chain (ETC) amino acids are broken down by

None of these

13

An inhibitor which attaches to the active site of an enzyme is called a

Competitive inhibitor

14

Why does the rate of an enzyme controlled reaction typically decrease if the temperature rises above 40 degrees Celsius?

The enzymes become denatured. Cold temperatures slow enzymes.

15

What is phagocytosis?

Solids brought into the cell

16

How many carbon atoms are there in a molecule of pyruvate?

3

17

The electron transport chain of respiration produces --- ATP molecules

32

18

Give an example of a coenzyme

Vitamins

19

How many oxygen molecules react with one glucose molecule in aerobic respiration?

6

20

What is the function of the oligosaccharides that stick up from the surface of the cell membrane?

They let the immune system identify the cell

21

Enzymes are

Proteins

22

ATP stands for

Adenosine Tri Phosphate

23

The area in an enzyme that fits around the substrate is called the

Active site

24

Which stage in aerobic respiration produces carbon dioxide?

Krebs cycle

25

How thick is the plasma membrane?

10 nm (nanometers)