Biology Chapter 8 Test Flashcards
What consists of an adenine, a 5 carbon sugar called ribose, and 3 phosphate groups.
ATP (adenosine triphosphate)
When the bond between the second and third phosphate groups are broken, what is created?
ADP (adenosine diphosphate)
What kind of energy powers movements by providing power to muscles and other structures?
biochemical energy
TRUE OR FALSE: ATP is a great way of transferring energy, but not storing large amounts of energy over long periods of time.
True
What are organisms that obtain food by consuming other living things?
heterotrophs
What are organisms that are capable of making their own food?
autotrophs
Where does nearly all the energy in all food molecules come from?
The sun
What is the process in which autotrophs use the energy of sunlight to produce high-energy carbohydrates (sugars and starches) which can be used as food?
photosynthesis
What are light absorbing molecules called?
photosynthetic pigments
Where are chlorophyll pigments located?
in the thylakoid membranes
What happens when chlorophyll absorbs light energy?
it causes the electrons to be energized
How do electrons become energized?
Chlorophyll absorbs light energy.
What is a compound that can accept a pair of high energy electrons and transfer them, along with most of their energy, to another molecule?
electron carrier (NADP+).
What is the job of NADP+?
It accepts and hold 2 high-energy electrons along with a hydrogen ion (H+).
What happens when NADP+ accepts and hold 2 high-energy electrons along with a hydrogen ion (H+)?
NADP+ becomes NADPH and some of the energy from sunlight is trapped into a chemical form.
What is the process in which an organism uses the energy of sunlight to convert water and carbon dioxide (reactants) into high-energy 6 carbon sugars and oxygen (products)?
photosynthesis
What is the balanced chemical equation for photosynthesis?
Six carbon dioxide molecules react with six water molecules using the sun’s energy in the presence of chlorophyll to produce one glucose molecule and 6 oxygen molecules.
What is the first set of reaction that takes place in the thylakoid membrane?
light dependent reactions
What are the products of light dependent reactions?
ATP, NADPH, and oxygen
What are the products of light independent reactions?
NADP+, ADP + P, sugars (starch, cellulose, glucose)
Which reaction uses energy from sunlight to produce oxygen and convert NADP+ into the energy carriers NADPH and ATP?
Light dependent reaction
What are clusters of chlorophyll and proteins in the thylakoid membrane called?
Photosystem II
What is the movement of the H+ ion across the membrane that causes ATP synthase to spin and bind a phosphate group to ADP to create ATP?
Chemiosmosis
What is the process in which ATP and NADPH from Light Dependent Reactions is used to create high energy sugars in the stroma of the chloroplast?
Light Independent Reaction/Calvin Cycle
What diagram consists of adenine, ribose, 3 phosphate groups grouped together?
ATP