AnswersCA-The Living Earth A-CRPhotosynthesis and Cellular Respiration

Photosynthesis and Cellular Respiration — Unit test Answers

15 verified answers4 views
21
Free Preview

The chemical equation below summarizes the process of photosynthesis.6CO2 + 6H2O + energy à 6O2 + C6H12O6Where is the energy shown in the equation transferred as a result of photosynthesis?

A
into water
B
into the air
C
into sugars
D
into the ground
22
Free Preview

Which statement describes an interaction between the biosphere and the hydrosphere?

A
Plant roots take in water through their roots.
B
Plants take in carbon dioxide from the air.
C
Energy stored in plants is transferred to humans and animals that eat them.
D
Plants make food through photosynthesis and release oxygen into the atmosphere.
23

How does a catalyst influence a chemical reaction?

A
It speeds up or slows down a chemical reaction by direct participation.
B
It reacts with products to increase the concentration of reactants.
C
It decreases the amount of energy necessary for the reaction to proceed.
D
It increases the total amount of products formed.
24

Which phrase describes one main feature of the atmosphere?

A
protects Earth’s surface
B
includes organisms in the air, on land, and in water
C
consists of rocks, minerals, landforms, and Earth’s interior
D
comprises oceans, lakes, rivers, streams, and groundwater
25

Recall that photosynthesis consists of two sets of chemical reactions. Which of these describes the energy conversions that occur during the light-independent reactions?

A
light energy à chemical energy
B
chemical energy à chemical energy
C
chemical energy à mechanical energy
D
mechanical energy à mechanical energy
26

How are mitochondria similar to chloroplasts?

A
Both have many layers of membranes.
B
Both contain molecules of chlorophyll.
C
Both are found in the cells of consumers.
D
Both are needed for cells to store energy.
27

A dietician examines the diet of a patient who is complaining that he is unable to build muscle mass. The patient eats mainly fresh fruits, vegetables, pasta, bread, and some fats and oils. Which type of supplement will the dietician most likely recommend?

A
citric acid
B
fatty acids
C
nucleic acids
D
amino acids
28

Which component is affected when a catalyst is added to a chemical reaction?

A
the amount of substrate
B
the activation energy
C
the amount of product
D
the concentration of reactants
29

Which statement describes how enzymes and substrates are related?

A
The enzyme influences the speed of change from substrate to product.
B
Enzymes are released as substrates in a chemical reaction.
C
An enzyme is a special kind of substrate in a chemical reaction.
D
Substrates combine with enzymes to form reactants.
30

Which is an energy conversion that occurs during cellular respiration?

A
ADP à ATP
B
FADH2 à FAD
C
pyruvate à glucose
D
light energy à chemical energy

Did you find these answers helpful?

More from this Course

Quiz
20 verified answers

Types of Radioactive Decay

Quiz
17 verified answers

Photosynthesis and Cellular Respiration

Quiz
13 verified answers

Photosynthesis and Cellular Respiration