Bio Iii

Front 1

Which of the following types of organisms do NOT depend on mitochondria to survive?

Back 1

bacteria

Front 2

What is the ultimate source of chemical energy for all living organisms?

Back 2

ATP

Front 3

When a molecule is reduced, it _________.

Back 3

gains electrons. stores energy

Front 4

In the absence of ATP synthase, animal cells would not be able to ____.

Back 4

carry out oxidative phosphorylation

Front 5

The final product of glycolysis is ____.

Back 5

pyruvate

Front 6

The small molecule intermediate phosphoenol-pyruvate (PEP) is unusual due to which chemical characteristic?

Back 6

supplies a high energy phosphate to phosphorylate ADP

Front 7

What molecule is responsible for carrying the acetyl group from pyruvate into the citric acid cycle?

Back 7

CoA

Front 8

Which molecule(s) is/are responsible for delivering the high energy electrons from the citric acid cycle to the electron transfer system?

Back 8

Both NADH and FADH2

Front 9

Why do cells go through fermentation?

Back 9

to replenish NAD+

Front 10

In the absence of O2, the partial metabolism of glucose in human muscles produces _________.

Back 10

lactic acid

Front 11

Choose the most correct statement about the two phases of photosynthesis.

Back 11

The products of the light-dependent reactions are ATP, NADPH, and O2; the products of the light-independent reactions are ADP, NADP+, and sugar.

Front 12

In the light-dependent reactions of photosynthesis, an excited electron from photosystem II is passed along an electron transport chain to ___________.

Back 12

photosystem I

Front 13

Each photosystem in a eukaryotic plant __________.

Back 13

a) is composed of molecules of chlorophylls and carotenoids.

b) possesses a light-gathering antenna complex.

c) has a specialized chlorophyll a molecule in its reaction center

Front 14

The molecule of chlorophyll a in photosystem I's reaction center is known as P700 because

Back 14

it absorbs photons with a wavelength of 700 nm.

Front 15

The primary purpose of the light-dependent reactions is to

Back 15

provide electrons and energy for the light-independent reactions.

Front 16

The Calvin cycle requires all of the following molecules EXCEPT for

Back 16

glucose

Front 17

The C4 cycle

Back 17

ensures that CO2 is provided to rubisco and thus prevents photorespiration.

Front 18

Which products of the light reactions are used in the Calvin cycle?

Back 18

ATP and NADPH

Front 19

Which of the following substances is not required at some point during photosynthesis?

Back 19

O2

Front 20

What is the ultimate fate of oxygen gas (O2) in cellular respiration?

Back 20

It is converted to water.

Front 21

How does cellular respiration differ in prokaryotes and eukaryotes?

Back 21

Eukaryotes use mitochondria; prokaryotes use their plasma membrane.

Front 22

What type of chemical reaction must occur for electrons to flow from one molecule to the next and supply the energy for metabolism?

Back 22

reduction/oxidation

Front 23

Which of these molecules has the most potential energy?

Back 23

glucose

Front 24

During which stages of cellular respiration is CO2 released?

Back 24

both pyruvate oxidation and citric acid cycle

Front 25

What is the function of NADH and FADH2?

Back 25

Both provide electrons to the electron transfer system.

Front 26

Oxygen acts as a final electron acceptor in respiration and is ultimately converted into which molecule?

Back 26

water

Front 27

What powers ATP synthase directly?

Back 27

proton gradient

Front 28

Where is ATP synthase located in non-photosynthetic eukaryotes?

Back 28

inner mitochondrial membrane