Summative Test 1B

Question 1

Metabolic Pathways / reactions may be classified as biodegradable or biosynthetic

Answer 1

True

Question 2

Metabolism is very complex

Answer 2

True

Question 3

Biodegradatice or destructive metabolism is concerned with the production of the energy required for all external and internal physical activities

Answer 3

True

Question 4

Any form of energy produced through metabolism may be used by the organism to fuel all of its activities

Answer 4

True

Question 5

Only glucose may undergo metabolism for energy production

Answer 5

False

Question 6

Cellular respiration, the process which cells uses to produce the energy they need to survive is remarkably more efficient compared to other energy conversion processes

Answer 6

True

Question 7

The main purpose of cellular respiration is to harvest the energy trapped in the bonds of glucose molecules

Answer 7

True

Question 8

Molecules may be built or destroyed in a single biochemical reaction

Answer 8

False

Question 9

The major monosaccharide present in the bloodstream is glucose because both fructose and galactose are converted to glucose in the liver

Answer 9

True

Question 10

Glycogen is stored in the liver and in the muscle

Answer 10

True

Question 11

In glycolysis the conversion of glucose 6 phospha back to glucose is inhabited by the enzyme glucokinasemof Hexokinase

Answer 11

True

Question 12

Cellular uptake of glucose is reduced by the presence of the hormone insulin

Answer 12

False

Question 13

Glucose is normally present in the urine

Answer 13

False

Question 14

The conversion of ATP to ADP is an energy producing reaction

Answer 14

True

Question 15

Glycolysis is an oxygen requiring metabolic pathway

Answer 15

False

Question 16

Glycolysis supplies the energy needed for muscle contraction

Answer 16

True

Question 17

Amylaze catalyzes yhe hydrolysis of stsrch and dextrin into maltose

Answer 17

True

Question 18

The transition stage linking glycolysis to kreb’s cycle converts pyruvate to a more oxidizable form xalled acetyle CoA

Answer 18

True

Question 19

Both glycolysis and kreb’s cycle are aerobic metabolic pathways

Answer 19

False

Question 20

The energy released in the first three stages of energy metabolism, glycolysis, transition stage and kreb’s cye are brought to the last stage, the electron transport chain where they are converted to ATP

Answer 20

True

Question 21

The vakue of the normal fasting blood sugar is

Answer 21

70 to 100mg / 100mL of blood

Question 22

Which of the following may be found present in the urine

Answer 22

Glucose

Question 23

Gluconeogenesis is a process involving the

Answer 23

Synthesis of glucose from non carbohydrate

Question 24

Does not describe the process of glycolysis

Answer 24

Aerobuc. It is both aerobic and anaerobic

Question 25

The chuef end product of glycolysis is

Answer 25

Pyruvic acid

Question 26

Gluconeogenesis takes place primarily in the

Answer 26

Liver

Question 27

Glycolysis takes place in the

Answer 27

Cytoplasm-cytosol of the cell

Question 28

How many high energy bonds are present in an ATP molecule

Answer 28

3

Question 29

The conversion of ATP to ADP liberates energy in the amount of

Answer 29

7,600 cal/mole

Question 30

The following are factors that remove the excess glucose from the blood except

Answer 30

Absence of insulin

Question 31

Which of the follow is not produced directly in the Citric acid cycle or krebs cycle

Answer 31

ATP

Question 32

Which of the following functions is performed by insulin

Answer 32

A or B

Question 33

The liver controls blood sugar level. This activity is governed by the following hormones except

Answer 33

Saccharine

Question 34

What happens when glucose is immediately metabolized or converted to glycogen

Answer 34

Hyperglycemia will develop

Question 35

Glycogenolysis and _______

Answer 35

Gluconeogenesis

Question 36

series of reactions that extract energy from glucose by splitting it into two three-carbon molecules called pyruvates

Answer 36

Glycolysis

Question 37

process of glycogen synthesis, in which glucose molecules are added to chains of glycogen for storage. This process is activated during rest periods following the Cori cycle, in the liver, and also activated by insulin in response to high glucose

Answer 37

Glycogenesis

Question 38

The tricarboxylic acid (TCA) cycle, also known as the Krebs or _________, is the main source of energy for cells and an important part of aerobic respiration. The cycle harnesses the available chemical energy of acetyl coenzyme A (acetyl CoA) into the reducing power of nicotinamide adenine dinucleotide (NADH).

Answer 38

Citric Acid Cycle

Question 39

In glycolysis how many molecules of ATP are produced from 1 molecule of glucose

Answer 39

2

Question 40

The total number if ATPs produced from the oxidation of 1 molecule of glucose

Answer 40

36

Question 41

The decomposition of glucose to two molecules of three-carbon sugar takes place in

Answer 41

The second half of glycolysis

Question 42

Not a consequence of lack of insulin in the body

Answer 42

Reduction of blood sugar level

Question 43

Pairs of molecules acts like specialized delivery trucks that dump off their loads of electrons and hydrogen ions to the electron transport chain for conversion to ATP?

Answer 43

NADH and FADH2

Question 44

The process of digestion involves

Answer 44

Hydrolysis

Question 45

The collective name given to all enzymes that catalyze the hydrolysis of carbohydrates to monosaccharides, fats, and lipids to fatty acids and glycerol and proteins to amino acids

Answer 45

Hydrolases