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Bio Unit 4 Topic 1 - A

Total questions: 18

Worksheet time: 17mins

Name
Class
Date
1.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
2.
What is the function of nucleic acids?
a)
Stores energy
b)
Stores genetic information
c)
Movement
d)
Physical structure
3.

Which of the following best describes a DNA molecule?

a)

made of amino acids

b)

contains ribose

c)

double stranded

d)

contains Uracil

4.
What are the nucleotides made of?
a)
Sugar, Phosphate, nitrogen base
b)
Phosphate, Adenine, nitrogen base
c)
Thymine, Adenine, Cytomine
d)
Phosphate, Nitrogen, Adenine
5.
Which 2 molecules forms the sides (backbone) of the DNA ladder?
a)
deoxyribose and adenine
b)
deoxyribose and a hydrogen bond
c)
sugar and the nucleus
d)
deoxyribose (sugar) and phosphate
6.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
7.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
8.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
9.
DNA and RNA are examples of...
a)
proteins
b)
nucleic acids
c)
carbohydrates
d)
lipids
10.

Which nitrogenous base is present in DNA, but absent in RNA?

a)

Thymine

b)

Purine

c)

Pyrimidine

d)

Uracil

11.

The sugar found in a nucleotide of RNA is called

(a)  

12.

Prokaryotic DNA has the following characeristics (check all that apply)

a)

Double-stranded

b)

Linear

c)

Circular

d)

Bound to histones

e)

Found in the nucleus

13.

Identify the organelles of eukaryotic cells that contain a single, circular, double-stranded DNA (check all that apply).

a)

Nucleus

b)

Mitochondria

c)

Ribosome

d)

Chloroplast

e)

Lysosome

14.

Which choice best describes the DNA of a eukaryote?

a)

single circular chromosome

b)

single linear chromosome

c)

multiple circular chromosomes

d)

multiple linear chromosomes

15.

A nucleosome is best described as

a)

nucleosomes coiled around each other

b)

a DNA strand wrapped around histone proteins

c)

one fully-packaged DNA molecule

d)

one strand of DNA double-helix

16.

Chromatin is best described as

a)

nucleosomes super-coiled around each other

b)

a DNA strand wrapped around histone proteins

c)

one fully-packaged DNA molecule

d)

one strand of DNA double-helix

17.

Chromosomes are made of... (Check all that apply.)

a)

DNA

b)

proteins

c)

carbohydrates

d)

lipids

18.

What do you call a length of DNA that codes for a particular protein?

a)

gene

b)

chromosome

c)

nucleosome

d)

nucleotide

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