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DNA Structure and Meiosis

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

DNA, or deoxyribonucleic acid, is found inside the ______ of every eukaryotic cell?

a)

nucleus

b)

lysosome

c)

ribosome

d)

vacuole

2.

The shape of DNA is described as a twisted ladder, the scientific name for this shape is ______ ______.

a)

fusili

b)

staircase

c)

double helix

d)

single helix

3.

The sides or "backbone" of the DNA strand is made up of deoxyribose sugars and phosphate groups, the middle of each double helix strand is made up of what molecule listed below?

a)

oxygenated base

b)

nitrogenous base

c)

carbonic base

d)

Army base

4.

How many nitrogenous bases are found in DNA?

a)

1

b)

2

c)

3

d)

4

5.

Adenine, Cytosine, Guanine, and Thymine are the 4 nitrogenous bases found in DNA. Which pairings are correct?

a)

A & C ; G & T

b)

C & T ; A & G

c)

A & T ; C & G

d)

A & W ; BB & T

6.

A nitrogenous base, deoxyribose sugar, and phosphate group all join to create a monomer known as a _______.

a)

nucleic acid

b)

nucleotide

c)

nuclear envelope

d)

amino acid

7.

The polymer created by the joining of nucleotide monomers is called a _______ _____.

a)

nucleotide

b)

nuclear envelope

c)

nucleic base

d)

nucleic acid

8.

DNA strands are joined by non-identical nitrogenous bases ( a&t , c&g) which referred to as being ________, this means that they go together, like peanut butter and jelly, or tuna flavored cotton candy.

a)

complimentary

b)

opposites

c)

anticodons

d)

adversarial

9.

If a DNA strand is 12% Adenine, how much is made of Cytosine?

a)

12%

b)

24%

c)

76%

d)

38%

10.

Using base pair rules select the correct complimentary strand of DNA

AAGGTGATC

a)

CCAAGCGT

b)

TTCCACTAG

c)

AATTTGCTC

d)

TTAAACGAG

11.

What phase of the cell cycle sees the replication of DNA?

a)

Prophase

b)

Interphase (G2 phase)

c)

Anaphase

d)

Interphase (S phase)

12.

Mitosis and meiosis are both examples of what?

a)

gamete production

b)

somatic cell production

c)

cell division

d)

cell addition

13.

Somatic cells (body cells) are created through which process

a)

parthenogenisis

b)

mitosis

c)

meiosis

d)

spontaneous spawning

14.

Gametes (sex cells) are produced through which process?

a)

mitosis

b)

meiosis

c)

fertilization

d)

parthenogenesis

15.

DNA replication occurs when one double stranded molecule of DNA is made into two double stranded molecules of DNA. This process is said to be __, which means that the new DNA molecule is made from one old strand and one new strand.

a)

Super conservative

b)

Semi conservative

c)

conservative

d)

super duper conservative

16.

Which number shows the correct interpretation of "semi conservative" when talking about DNA?

a)

1

b)

2

c)

3

d)

not pictured

17.

Haploid cells are represented by which single letter?

a)

h

b)

n

c)

g

d)

s

18.

Diploid cells are represented by ___?

a)

4n

b)

3n

c)

1/2n

d)

2n

19.

A diploid cell has 24 chromosomes, the gamete would have ____ chromosomes

a)

48

b)

6

c)

12

d)

24

20.

A haploid cell has 15 chromosomes in it. The diploid cell would contain ___ chromosomes

a)

7.5

b)

45

c)

60

d)

30

21.

Gametes are _______ cells.

a)

diploid

b)

triploid

c)

monosomy

d)

haploid

22.

Somatic cells are ______ cells. (in most organisms)

a)

diploid

b)

triploid

c)

haploid

d)

monoploid

23.

The failure of one or more pairs of homologous chromosomes to separate normally during meiosis, which may result in an abnormal distribution of chromosomes in the daughter cells.

a)

Mutagen

b)

conjunction

c)

disjunction

d)

nondisjunction

24.

Trisomy occurs when there is an additional ______ in a gamete

a)

base pair

b)

chromosome

c)

nucleus

d)

membrane

25.

A gamete that is missing a chromosome is can cause a condition called ________.

a)

monosomy

b)

trisomy

c)

nucleus

d)

haploid