Chapter 2 Practice Test – EXTRA CREDIT

Print this test and answer all questions.

Turn this completed test in on TEST DAY and receive extra credit.

Write the letter of the correct answer on the line at the left.

1) Plants use sunlight to make food in a process called

A) respiration

B) photosynthesis

C) fermentation

D) mitosis

2) Carbon dioxide enters a plant through its

A) pigments

B) roots

C) centromeres

D) stomata

3) The first stage of respiration takes place in the

A) nucleus

B) mitochndria

C) cytoplasm

D) chloroplasts

4) One product of fermentation in yeast cells is

A) alcohol

B) lactic acid

C) oxygen

D) glucose

5) DNA replication occurs during

A) prophase

B) cytokinesis

C) metaphase

D) interphase

6) Chromatin condenses and forms rodlike structures during

A) anaphase

B) prophase

C) telophase

D) interphase

7) The final stage of the cell cycle is called

A) interphase

B) cytokinesis

C) mitosos

D) telophase

8) During DNA replication, adenine pairs only with

A) thymine

B) cytosine

C) guanine

D) lactic acid

9) The cell grows to its mature size during

A) mitosis

B) prophase

C) telophase

D) interphase

10) Most cases of cancer are caused by

A) mutations

B) radiation

C) tumors

D) drugs

Fill in the blanks to complete each statement

11) During photosynthesis , plants produce sugars and _______________________.

12) The pigment in green plants that capture the energy in sunlight is called ________________.

13) Most of the energy that is released during respiration is produced in the _______________.

14) Each identical strand of a chromosome is called a(n) ______________________.

15) The main cause of lung cancer is ____________.

If the statement is true write true. If it is false, change the underlined word or words to make the statement true.

_______________________ 16) The raw materials of photosynthesis are water and oxygen.

_______________________ 17) The main difference between respiration and fermentation is that fermentation does not use water.

_______________________ 18) One of the products of respiration is carbon dioxide.

_______________________ 19) During the cytokinesis stage of the cell cycle, the cell’s nucleus divides into two new nuclei.

_______________________ 20) In the United States, the leading cause of cancer deaths is lung cancer.

Write an answer for each of the following in the spaces provided.

21) Explain why photosynthesis and respiration are considered opposite processes.

22) Imagine that all the plants on Earth have died. Explain how this would affect humans.

23) Interphase sometimes is referred to as the “resting” stage of the cell cycle. Why is this reference misleading?