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Biology DNA starting quiz

Total questions: 16

Worksheet time: 10mins

Name
Class
Date
1.

Which of the following is NOT a nitrogenous base of DNA

a)

Adenine

b)

Guanine

c)

Uracil

d)

Cytosine

2.

What does DNA stand for

a)

Deoxyribonucleic acid

b)

Deoxyribbon acid

c)

Deoxyribonucleic base

d)

Deoxy- yeah i dont know

3.

What of the following pairs with Adenine

a)

Guanine

b)

Cytosine

c)

Thymine

d)

Uracil

4.

What is the complementary to AATTGCC

a)

TTAACGG

b)

TACGGCC

c)

TTACCGG

d)

TGAACGG

5.

What makes up a nucleotide

a)

Phosphate group, Sugar, Nitrogenous acid

b)

Nucleus, Sugar, Nitrogenous Base

c)

Phosphate group, Sugar, Nitrogenous Base

d)

Nitrogenous Base, Sugar, Nucleic Acid

6.

How many chromosomes are in an average human

a)

24 Pairs

b)

23 Pairs

c)

45

d)

22 Pairs

7.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
8.
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
9.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose sugar and adenine
b)
deoxyribose sugar and a hydrogen bond
c)
deoxyribose sugar and the nucleus
d)
deoxyribose sugar and phosphate
10.
The traits of an organism are passed to its offspring on small coded strands of DNA material called
a)
meiosis
b)
recessive traits
c)
genes
d)
heredity
11.
The two strands of nitrogenous bases in DNA are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
12.
What is a gene?
a)
A bundle (like a hot dog bun) that the DNA is packed into
b)
something inside the nucleus
c)
a piece of DNA
d)
all of your DNA
13.

Bundled up, organized DNA is called a

a)

gene

b)

trait

c)

chromosome

d)

nucleotide

14.

If the condition is a autosomal recessive and the parents are heterozygous what is the chance of the children having the condition

a)

25%

b)

50%

c)

100%

d)

75%

15.

If two heterozygous individuals have children what are the possible offspring

a)

AA, Aa, Aa, aa

b)

AA, AA, aa, aa

c)

Aa, Aa, Aa, Aa

d)

AA, Aa, aa, aa

16.
HOMOZYGOUS means:
a)
same
b)
different

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