Cell Functions (U2 S4)

Question 1

An example of an "electron acceptor" that functions in glycolysis is ______________.

Accepted Answer

NAD+

Question 2

Identify the two (2) reagents of cellular respiration.

Accepted Answer

sugars, oxygen

Question 3

Where do the Krebs Cycle and the Electron Transport Chain occur in cellular respiration?

Accepted Answer

mitochondria

Question 4

Almost all the energy used by life on Earth comes from ___________.

Accepted Answer

the sun

Question 5

When a phosphate group is removed from ATP, _________________.

Accepted Answer

a substantial amount of energy is released

Question 6

Energy is required for a variety of life processes including ________________.

Accepted Answer

all of the above

Question 7

Where does glycoloysis occur in the cell?

Accepted Answer

cytoplasm

Question 8

When electrons in a chlorophyll molecule are raised to a higher energy level, they _________________.

Accepted Answer

enter an electron transport chain

Question 9

Channel proteins found in the thylakoid membranes are directly responsible for _______________.

Accepted Answer

providing the energy to produce ATP molecules

Question 10

When cells break down food molecules, some of the energy is __________________.

Accepted Answer

released as heat into the surrounding environment

Question 11

________________ is the process that takes place when organic compounds are broken down in the absence of oxygen.

Accepted Answer

fermentation

Question 12

When cells break down food molecules, most of the energy is _______________.

Accepted Answer

temporarily stored in ATP molecules

Question 13

Identify the three (3) products of cellular respiration.

Accepted Answer

ATP, water, carbon dioxide

Question 14

As light intensity increases, the rate of photosynthesis _________________.

Accepted Answer

increases until the light saturation point is reached

Question 15

The "dark reactions" of photosynthesis ___________________.

Accepted Answer

all of the above

Question 16

Where do the oxygen atoms that are formed into a gas during photosynthesis come from?

Accepted Answer

water

Question 17

The final electron acceptor in cellular respiration is ______________.

Accepted Answer

oxygen

Question 18

Identify the two (2) products of photosynthesis.

Accepted Answer

oxygen, sugar

Question 19

ATP is called a cell's "energy currency" because ________________.

Accepted Answer

most of the energy that drives metabolism is from ATP

Question 20

Identify the three (3) reagents of photosynthesis.

Accepted Answer

carbon dioxide, sunlight, water

Questions 20