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