test 1

1.

1 point

if a plant cell is placed in a hypotonic solution

the cell will expand slightly but not burst

the cell will burst

water will flow out and the cell will shrivel

water will flow out of the cell

2.

1 point

Which of the following occurs whether oxygen is present of not

oxidative phosphorilation

glycolisis

fermentation

Citric acid cycle

3.

1 point

in order for a protein to be an integral protein it would have to be

covered with phospholipids

amphipathic with at least one hydrophobic region

hydrophilic

hydrophobic

4.

1 point

what are the products of the light reactions that are subsequently used byt he clavin cycle

carbon dioxide and rubisco

water and carbon dioxide

electrons and photons

ATP and NADPH

5.

1 point

Non-cyclic phosphorilatoin differs from oxidative phosphorilation as

it involves an electron transport chain

the enzymes are membrane bound

the final electron acceptor is NACP+ not oxygen

generation of ATP is driven by flow of protns

6.

1 point

the mechanism by which the end product of a metabolic pathway inhibits an earlier step in the pathway is known as

feedback inhibition

competitive inhibition

metabolic inhibition

reverse inhibition

7.

1 point

if you consume 1 gram of each of the following, which will yield the most atp

protein

glucose

sucrose

fat

8.

1 point

which of the following processes produced the most atp per molecule of glucose oxidised

anaerobic respiration

lactic acid fermentation

alchoholic fermentation

aerobic respiration

9.

1 point

non - cyclic electron flow in chloroplasts

required both photosystem 1 and 2

consumes oxygen and produces atp and nadph

can occur in the dark

is mainly used to generate atp

10.

1 point

during mechanical transport or chemical work, the heat generated is,

lost to the environment

stored in chemical bonds

used to power more cellular work

is used to generate adp for more atp synthesis

11.

1 point

the conversion of pyruvate to acytyl CoA

produced atp

produces Co2

consumes NADH

occurs in the cytoplasm

12.

1 point

Which of the following statements is true about nad+

NAD+ can donate electrons for use in oxidative phosphoilation

NAD+ is reduced

NAD+ is reduced to NADH during both glycolosis and the CAC

NAD+ had more energy than NADH

13.

1 point

movement through ion channels

is a type of facilitated diffusion

does not involve membrane proteins

is not selective

requires an input of energy

14.

1 point

digestive enzymes are secreted from cells linking the gut to the stomach and intestinal cavaties. which of the following could be responsible

diffusion

pinocyctosis

exocytosis

passive transport

15.

1 point

chlorophyll appears green because

it recieves green light from other plants

it absorbs green light

it is unable to absorb green light but can absorb other wavelengths

it occurs only in green plants

16.

1 point

The addition of oxygen to RuBP by rubisco to form a 2 carbon product broken down by the cell to CO2 and water is called

cellular respiration

photorespiration

aerobik respiration

chemisomosis

17.

1 point

at the end of the citric acid cycle, most of the energy from the original glucose molecules is stored in

pyruvate

NADH

FADH2

co2

18.

1 point

in a biological membrane, which of the following is a true statement about phospholipids

they flip flop from one side of the membrane to another

they can move laterally along the plane of the membrane

they freely move between membrane and surrounding solutions

they have hydrophilic tails in the interior of the membrane

19.

1 point

when an organism such as yeast lives by fermentation, it converts pyruvate from glycolysis into a different compound such as alcohol. why does it do this

the conversation yields atp per pyruvate molecule

the convesation is needed to regenerate NAD+ consumed during glycolosis

the conversation yields one NADH molecule per pyruvate

the buildup of pyruvate in the cell would be to toxic

20.

1 point

biological membranes have low permeability to polar molecules because

the inside of the membrane is hydrophobic

lipid bilayers are not fluid enough

the inside of the membrane is hydrophilic

cells dont need polar molecules

21.

1 point

the direct energy source that drives ATP synthesis during oxidative phosphorilation in the mitochondria is

the final transfer of electrons to oxygen

the oxidation of glucose to water and co2

the proton electrochemical gradient across the inner mitochondrial membrane

the transfer of phosphate to ADP to form ATP in glycolosis

22.

1 point

which of the following is a characterised feature of a carrier protein in the plasma membrane

it exhibits specificity for a particular type of molecule

it requires expendeture of energy by the cell to function

it works against diffusion

it is a peripheral membrane protein

23.

1 point

in an exergonic reaction:

the reaction proceeds with a net release of energy

the reaction does not require activation energy

deltaG is positive

the products have more total energy than the reactants

24.

1 point

Anything that generates atp formation will most likely

force the cell to rely on atp for energy

result in cell death

force the cell to use light for energy

no major effect on cell

25.

1 point

which of the following is a product of the calvin cycle in photosynthesis

GBP, ADP, NADP+

GBB, ATP, NADP+

ADP, NADP+

ATP, NADPH, OH

26.

1 point

the primary function of polysaccharides ..... cell membrane

to mediate cell to cell recognition

27.

1 point

C4 and CAM plants

both use pep carboxylase to initially fix co2

have lower rates of photorespiration than c3 plants in hot conditions

all of the above (both A and D)

28.

1 point

the molecule that functions as the reducing agent (electron donor) in an oxidation - reduction reaction

gains electrons and loses energy

loses electrons and energy

no change

gains electrons and gains energy

29.

1 point

a drug that makes hole in mitochondrial membranes will be harmful becuase it will inhibit

oxidative phosphorilation

glycolosis

the citric acid cycle and oxidatitive phosphorilation

the citric acid cycle