1.
Which process uses the products of photosynthesis as reactants?

DNA replication

protein synthesis

active transport

cellular respiration
2.
The diagram shows an energy transformation that typically occurs in plant cell plastids.
Which statement best describes this role of plastids in the plant cell?

Chloroplasts transform chemical energy into electromagnetic energy.

Chloroplasts transform light energy into chemical energy.

Mitochondria transform chemical energy into electromagnetic energy.

Mitochondria transform light energy into chemical energy.
3.

Cellulose is a carbohydrate and a polymer of glucose. Which statement best describes how
cellulose is formed within living organisms?

It is the result of a physical change that alters the shape of a compound.

It is the product of the decomposition of a much larger molecule.

It is constructed by connecting smaller monomer subunits.

It is assembled by bonding individual atoms.
4.
Which statement best describes a relationship between mitochondria and chloroplasts?

Chloroplasts release chemical energy from molecules and store it in mitochondria.

Chloroplasts convert light energy into chemical energy that can be used by mitochondria.

Mitochondria convert chemical energy into light energy that can be used by chloroplasts.

Mitochondria release chemical energy from molecules and store it in chloroplasts.
5.
A jackrabbit has large ears containing blood vessels that help it maintain a constant
body temperature by adjusting heat exchange with the surrounding environment.
Which characteristic of life is best described by this example?

homeostasis

growth

organization

energy use
6.
Which two statements correctly describe one similarity and one difference between
cellular respiration and photosynthesis?

statements 2 and 3

statements 3 and 4

statements 1 and 4

statements 1 and 2
7.
Plant cells use sunlight to make their own food. Which structure allows plant cells to perform
this function?

nucleus

mitochondrion

vacuole

chloroplast
8.
The indicated protein is part of a cell membrane. What is the most likely purpose
of this protein?

It attracts unbalanced electrical charges in the cell’s environment.

It releases stored chemical energy in membrane carbohydrates.

It allows passage of particles into and out of the cell.

It manufactures phospholipids to repair membrane damage.
9.
Which graph best shows how enzyme activity changes as the temperature is adjusted above
and below the enzyme’s optimum temperature?

10.
Which statement best describes how active transport differs from passive transport?

Only active transport allows substances to leave a cell.

Only active transport requires ATP.

Only active transport moves small particles.

Only active transport relies on a plasma membrane.