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Chromosomes, Karyotypes, DNA, and Cell Cycle

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.

In humans, chromosome pairs 1-22 are referred to as

a)

A karyotype

b)

Sex chromosomes

c)

Autosomes

d)

Sister chromatids

2.

What is the structure that holds the sister chromatids together called?

a)

Sister chromatids

b)

Homologous chromosomes

c)

Autosomes

d)

Centromeres

3.

Where in a cell are chromosomes located?

a)

mitochondria

b)

nucleus

c)

ribosomes

d)

endoplasmic reticulum

4.

A pair of identical chromosomes shown in a karyotype, one inherited from mom, and one inherited from dad are called

a)

Sister chromatids

b)

Homologous chromosomes

c)

Centromeres

d)

Autosomes

5.

Strawberries are octoploid, which means that each nucleus has this many copies of each chromosome.

a)

2

b)

4

c)

6

d)

8

6.

Humans are diploid, which means that each nucleus has this many copies of each chromosome.

a)

2

b)

4

c)

6

d)

8

7.

All of the following are techniques to identify homologous chromosomes in a karyotype EXCEPT:

a)

Banding patterns from staining

b)

Weight of the chromosomes

c)

Size of the chromosomes

d)

Centromere position

8.

Is this karyotype a male or a female?

a)

male

b)

female

c)

cannot be determined

9.

Genetically normal humans have how many pairs of chromosomes?

a)

23

b)

46

c)

92

10.

The molecular structure of DNA was first discovered in 1953 by which of the following?

a)

Isaac Newton and Rachel Carson

b)

James Watson and Francis Crick

11.

How many strands of DNA are there in a double helix?

a)

1

b)

2

c)

3

d)

4

12.

The rungs of a DNA molecule are made up of

a)

Nitrogen bases

b)

Deoxyribose sugar

c)

Phosphates

13.

The sides of a strand of DNA are made up of alternating deoxyribose sugars and

a)

Nitrogen bases

b)

Phosphates

c)

Nucleosides

14.

This process produces four daughter cells with half of the genetic information of the parent cell.

a)

mitosis

b)

meiosis

15.

This process produces two daughter cells that are identical to the parent cell.

a)

mitosis

b)

meiosis

16.

This process goes through each of the phases (prophase, metaphase, anaphase, telophase) twice.

a)

mitosis

b)

meiosis

17.

This process occurs in body (somatic) cells.

a)

mitosis

b)

meiosis

18.

This process occurs in sex cells (gametes).

a)

mitosis

b)

meiosis

19.

What phase of the cell cycle does this image show?

a)

anaphase

b)

telophase

c)

metaphase

d)

prophase

20.

What phase of the cell cycle does this image show?

a)

cytokinesis

b)

telophase

c)

interphase

d)

anaphase