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Biology EOC RC1

Total questions: 20

Worksheet time: 19mins

Name
Class
Date
1.

People who have leukemia, a cancer that affects white blood cells, are often given Cytarabine. This drug inhibits the synthesis of DNA. Which phase of the cell cycle is most affected by Cytarabine?

a)

G1 phase

b)

S phase

c)

G2 phase

d)

M phase

2.

Which cellular process takes place in the ribosomes that are bound to the endoplasmic reticulum?

a)

The breakdown of waste material

b)

The conversion of radiant energy to glucose

c)

The synthesis of new proteins

d)

The replication of nucleic acids

3.
What is the end result of mitosis
a)
2 cells that are identical to the parent cell
b)
2 cells that have half the number of chromosomes as the parent cell
c)
4 cells that are identical to the parent cell
d)
4 cells that have half the number of chromosomes as the parent cell
4.
Which pair of structures best shows that plant cells have functions different from animal cells?
a)
Cytoplasm and mitochondria
b)
Chloroplasts and cell wall
c)
Ribosome and golgi
d)
Nucleus and cell membrane
5.

The ability to maintain a stable internal environment is called ________________.

a)

Metabolism

b)

Mitosis

c)

Heterozygous

d)

Homeostasis

6.
What is one way that a lysogenic infection differs from a lytic infection?
a)
A lysogenic virus does not act on bacteria as a lytic virus does.
b)
A lysogenic virus can remain in the host DNA for a longer period without becoming active.
c)
A lysogenic virus contains RNA instead of DNA.
d)
A lysogenic virus directs the production of new viruses right away.
7.

Cell have several mechanisms for regulating their internal environments. Which of these mechanisms involved in maintaining homeostasis requires energy?

a)

osmosis

b)

diffusion

c)

active transport

d)

passive transport

8.
The concentration of water is higher in the soil than in plant root cells. Water moves into root cells of a plant by...
a)
Facilitated Diffusion
b)
Simple Diffusion
c)
Active Transport
d)
Osmosis
9.
Why would it be important to replicate DNA before a cell divides in mitosis or meiosis?
a)
In order for genetic information to be transferred into daughter cells.
b)
In order for the cell to be able to increase in size.
c)
In order for the DNA to be contained in the nucleus.
d)
In order for the cell to re-order the DNA sequencing in the new cells.
10.

DNA replication occurs in the -

a)

mitochondira

b)

nucleus

c)

endoplasmic reticulum

d)

cell membrane

11.
What process best explains how muscle cells and nerve cells can develop from the same fertilized egg?
a)
genetic engineering
b)
survival of the fittest
c)
differentiation
d)
selective breeding
12.
How do stem cells know what type of cells to differentiate into?
a)
The nucleus has instructions to turn some genes on and some genes off.
b)
Signals from chemicals in the organism or from the environment determine which genes will be turned on and off.
c)
Genes turn on and off randomly.
d)
The cell has unique DNA that determines what the cell will become.
13.
This diagram shows an enzyme-substrate complex.
Which is represented by Structure X?
a)
Substrate
b)
Enzyme
c)
Complex
d)
Product
14.
A researcher is studying a particular disease-causing agent. The agent has a protein coat, but it lacks a nucleus, contains no other organelles, and can reproduce only when it is inside an animal cell. The researcher should classify the agent as which of the following?
a)
A bacterium
b)
A fungus
c)
A virus
d)
A protist
15.
This diagram shows the cell cycle.

Which of the following activities occur in the G1 phase?
a)
Replication of the DNA
b)
Growth of the cell
c)
Formation of the mitotic spindle
d)
Breakdown of the nuclear membrane
16.
Energy for most chemical reactions in cells is supplied by which of the following molecules?
a)
DNA
b)
ATP
c)
RNA
d)
Hemoglobin 
17.
Which of the following macromolecules are a prominent part of animal tissues that function in insulation, helping animals conserve heat?
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic acids
18.

What phase of mitosis is shown in the picture?

a)

Prophase

b)

Metaphase

c)

Anaphase

d)

Telophase

19.
Animal, fungi, plant, and protista cells are all examples of which type of cell?
a)
Eukaryotic
b)
Prokaryotic
c)
Both prokaryotic and eukaryotic
20.

Which statements can apply to

eukaryotic cells?


I. Unicellular

II. Phospholipid cell membranes

III. DNA stored in plastids

IV. Enclosed cytoplasm

V. Double-walled nuclear membranes

a)

I, II, III, IV, V

b)

II, III, IV

c)

I, II, IV, V

d)

II, IV, V

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