Biology Chapter 8 possible multiple choice questions

The Calvin Cycle provides cells with sugars that can be stored for more than a few inutes

T

If you grind up the chloroplasts found in spinach leaves into a liquid solution, the solution will have a green color.

True

Most plants appear green because chlorophyll

does not absorb green light

Which of the following is released during cellular respiration?

energy

Photosynthesis uses the sun's energy to convert water and carbon dixide into sugars

True

Plants gather the sun's energy with light-absorbing molecules called pigments

True

The Krebs Cycle releases energy that is used to produce ATP.

True

The Krebs cycle produces electron carrier molecules that pay a role in the electron transport chain.

True

The carbon cycle is the process by which carbon moves from ignorance to organic compounds and back.

True

The energy in most food comes from sunlight.

True

The products of glycolysis are 2 ATP, 2NADH, and 2 pyruvic acid molecules

True

Which of the following is NOT a true statement about ATP?

Used ATP is discarded by the cell as waste

Energy is released from ATP when

a phosphate group

Organisms, such as plants, that make their own food are called

autotrops

When the body need exercise for longer than 90seconds, it generates ATP by carrying out what?

cellular respiration

Which of the following is NOT a part of an ATP molecule?

chlorophyll

ADP is one of the principal chemical compounds that living things use to store energy.

False, ATP

Protein structure in mitochondria that act like miniature turbines and convert ADP into ATP are called electron transport chains

False, ATP synthases

During the light reactions, plants use the energy in ATP and NADPH to build sugars.

False, Calvin Cycle

The light reactions supply the Calvin Cycle with CO₂ and ATP.

False, NADPH

The reactants that convert the energy in sunlight into chemical energy of ATP and NADPH are called the Calvin Cycle.

False, light reactions

ATP synthesis is powered by the flow of H+ ions into the thylakoid.

False, out of

Cellular respiration uses carbon dioxide to convert the chemical energy in organic molecules into ATP.

False, oxygen

If a plant and a burning candle are placed under a bell jar, the candle will burn because the plant gives off carbon dioxide.

False, oxygen

Unlike cellular respiration, fermentation can be used to release energy even in the absence of carbohydrates.

False, oxygen

The reactants of photosynthesis are the same as the reactants of cellular respiration.

False, products

The starting molecule for glycolysis is what?

Glucose

Why does the inside of the thylakoid membrane become positively charged during the light reactions?

H+ ions are released as water splits

Which pathway represents the flow of electrons during photosynthesis?

H₂O→NADPH→Calvin Cycle

During lactic acid fermentation, what happens?

NAD+ is regenerated, allowing glycolysis to continue

The conversion of pyruvic acid into lactic acid requires

NADH

Which of the following passes high-energy electrons into the electron transport chain?

NADH and FADH₂

Which of the following is NOT a stage of cellular respiration?

fermentation

If carbon dioxide is removed from a plant's environment, what would you expect to happen to the plant's reproduction of sugars?

fewer sugars will be produced

What are the reactants in the equation for cellular respiration?

glucose and oxygen

Which of these processes takes place in the cytoplasm of the cell?

glycolysis

Which of the following is the correct sequence of events in the cellular respiration?

glycolysis→fermentation→Krebs Cycle

Which region of the visible spectrum is not absorbed well by chlorophyll?

green

Organisms that cannot make their own food and must obtain energy from the foods they eat are called

heterotrophs

Which of the following is false?

A thylakoid contains a granum

Glycolysis provides a cell with a net gain of what?

2 ATP molecules

What is the correct equation for cellular respiration?

6CO₂+C₆H₁₂O₆→6CO₂+6H₂O+Energy

Cellular Respiration uses oxygen to convert the chemical energy stored in organic molecules into

ATP

The energy of the electrons passing along the electron transport chain is used to make

ATP

The energy of the electrons passing along the electron transport chain is used to make what?

ATP

Which of the following is NOT a step in the light reactions?

ATP and NADPH are used to produce sugars

All of the following are sources during exercise EXCEPT what?

Alcoholic Fermentation

Which statement mainly explains why even well conditioned athletes have to pace themselves for athletic events that last several hours?

Cellular respiration releases energy more slowly than fermentation does

Plants cannot release energy from glucose using what?

Photosynthesis

How are cellular respiration and photosynthesis almost opposite processes?

Photosynthesis used carbon dioxide, and cellular respiration produces it.

Which step is the beginning of photosynthesis?

Pigments in the first photosystem absorb light

The products of the photosynthesis are the what?

Reactants of cellular respiration

Breathing heavily after running a race is your body's way of what?

Repaying an oxygen debt

In the presence of oxygen, what follows glycolysis?

The Krebs Cycle

A plant whose leaves are naturally yellow probably contains chlorophyll as well as other light-absorbing pigments.

True

The Krebs cycle starts with

acetyl coA and yields carbon dioxide

What are the three parts of an ATP molecule?

adenine, ribose, triphosphate tail

The air bubbles and spongy texture of bread are due to which process?

alcohol fermentation

The two main types of fermentation are called

alcoholic and lactice acid

Which process is used to make bread rise?

alcoholic fermentation

Which of the following is a part of the overall reaction for photosynthesis?

all of the above (carbon dioxide, water, light)

Which of the following is inside the thylakoid membrane?

all of the above (electron transport chain, photosynthesis, ATP synthase)

What are the products of the light reactions?

all of the above (oxygen, ATP, NADPH)

The electron transport chain can be found in

all the above

Where int he chloroplast is chlorophyll found?

in the thylakoid

Where are the photosystems found?

in the thylakoid membrane

Where do the light reactions take place?

in the thylakoid membranes

Milk is converted to yogurt under certain conditions when the microorganisms in the milk produce acid Which of these processes would you expect to be key in the production of yogurt?

lactic acid fermentation

One cause of muscle soreness and fatigue is

lactic acid fermentation

A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27 degrees C. The gas being collected is probably

oxygen

Cellular respiration is called an aerobic process because is requires

oxygen

In the overall equation for photosynthesis, six molecules of carbon dioxide result in six molecules of

oxygen

Photosynthesis uses sunlight to convert water and carbon dioxide into

oxygen and sugars

Plants gather the sun's energy with light absorbing molecules called

pigments

A granum is a

stack of thylakoids

What is the product of the Calvin Cycle?

sugar

Plants take in energy by absorbing

sunlight

In the presence of oxygen, glycolysis is followed by

the Krebs Cycle

The stroma is the thick fluid within the inner membrane of the chloroplast that surrounds

thylakoids

Which of these is a product of cellular respiration?

water