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DNA & Reproduction

Total questions: 44

Worksheet time: 23mins

Name
Class
Date
1.

the basic building blocks of all living things.

a)

cells

b)

genes

c)

DNA

d)

chromosomes

2.

The human body is made of ______________of cells.

a)

millions

b)

thousands

c)

trillions

d)

billions

3.

The center of the cell is called the __________.

a)

nucleus

b)

chromosome

c)

gene

d)

mitochondria

4.

The _____________serves as the cell’s command center, sending directions to the cell to grow, mature, divide or die.

a)

nucleus

b)

chromosome

c)

gene

d)

cell wall

5.

The molecule that stores information that contains the instructions for making proteins.

a)

Genes

b)

chromosomes

c)

DNA

d)

RNA

6.

What is the shape of a DNA molecule?

a)
b)
c)
d)
7.

DNA winds up and coils into a _________________?

a)

Gene

b)

Chromosome

c)

Twisted ladder

d)
8.

Is this Asexual reproduction or sexual reproduction?

a)

Asexual Reproduction

b)

Sexual Reproduction

9.

Is this Asexual reproduction or sexual reproduction?

a)

Asexual Reproduction

b)

Sexual Reproduction

10.

Is this Asexual reproduction or sexual reproduction?

a)

Asexual Reproduction

b)

Sexual Reproduction

11.

Is this Asexual reproduction or sexual reproduction?

a)

Asexual Reproduction

b)

Sexual Reproduction

12.

Is this Asexual reproduction or sexual reproduction?

a)

Asexual Reproduction

b)

Sexual Reproduction

13.

Is this Asexual reproduction or sexual reproduction?

a)

Asexual Reproduction

b)

Sexual Reproduction

14.

Produces 2 daughter cells which are genetically identical to the parent cell.

a)

Mitosis

b)

Meiosis

15.

Produces 4 daughter cells, each of which is NOT identical to the parent cell.

a)

Mitosis

b)

Meiosis

16.

Each daughter cell is diploid (contains the normal number of chromosomes).

a)

Mitosis

b)

Meiosis

17.

Used in growth and asexual reproduction.

a)

Mitosis

b)

Meiosis

18.

Each daughter cell is haploid (contains half the number of normal chromosomes).

a)

Mitosis

b)

Meiosis

19.

Used to produce gametes (sperm and egg cells).

a)

Mitosis

b)

Meiosis

20.

Which is an advantage of Asexual reproduction?

a)

Variation in offspring

b)

The organism is more protected because of genetic variation

c)

If the parent has genetic disease offspring will have it too.

d)

produces more offspring

21.

Which is an advantage of sexual reproduction?

a)

Does not need to find a mate.

b)

The organism is more protected because of genetic variation

c)

If the parent has genetic disease offspring will have it too.

d)

produces more offspring

22.

Which is an disadvantage of sexual reproduction?

a)

Does not need to find a mate.

b)

The organism is more protected because of genetic variation

c)

Requires two organisms. Must find a mate.

d)

produces more offspring

23.

Which is an disadvantage of Asexual reproduction?

a)

Does not need to find a mate.

b)

The organism is more protected because of genetic variation

c)

Requires two organisms. Must find a mate.

d)

If the parent has a disease, the offspring will have a disease.

24.

Which statements about DNA are true? Choose more than one answer.

a)

DNA stands for ribonucleic acid

b)

DNA is arranged in a spiral-shaped double helix

c)

Genes are inherited from both parents

d)

Scientists have yet to map the human genome

e)

There are at least 20,000 human genes

25.

What reproductive process do bacteria use by forming two identical cells from one parent cell?

a)

binary fission

b)

fragmentation

c)

vegetative propagation

d)

fertilization

26.

What is required for sexual reproduction to occur?

a)

an individual that produces sperm and an individual that produces eggs

b)

an individual that produces sperm and an individual that produces spores

c)

an individual that produces buds and an individual that produces spores

d)

an individual that produces buds and an individual that produces eggs

27.

Two scientists are debating how to classify a new animal species that they have discovered. They observe that the animal is capable of producing sperm.

What statement would they most likely make about the new species?

a)

This animal produces offspring that are genetically different from itself.

b)

This animal produces offspring that are genetically identical to itself.

c)

This animal’s sperm will join with spores to produce offspring.

d)

This animal’s sperm will undergo binary fission to produce offspring.

28.

What are the main differences between asexual reproduction and sexual reproduction?

a)

Asexual reproduction requires two parents and produces non-identical offspring, while sexual reproduction requires only one parent and produces identical offspring.

b)

Asexual reproduction requires two parents and produces identical offspring, while sexual reproduction requires only one parent and produces non-identical offspring.

c)

Asexual reproduction requires only one parent and produces identical offspring, while sexual reproduction requires two parents and produces non-identical offspring.

d)

Asexual reproduction requires only one parent and produces non-identical offspring, while sexual reproduction requires two parents and produces identical offspring.

29.

An advantage of (a)   reproduction is that a genetic disorder in a parent might not affect the offspring.

30.

A disadvantage of   (a)   reproduction is that offspring generally have more competition for resources, such as food and living space.

31.

Which label best represents the area marked Y?

a)

gene

b)

chromosome

c)

DNA

d)

Nucleus

32.

Which label best represents the area marked Z?

a)

gene

b)

chromosome

c)

DNA

d)

Nucleus

33.

Which label best represents the area marked X?

a)

gene

b)

chromosome

c)

DNA

d)

Nucleus

34.

What is the twisted ladder shape of the DNA called?

a)

Double Helix

b)

nucleotides

c)

Chromotids

d)

3D Model

35.

Asexual reproduction requires

a)

Two parents

b)

Only one parent

36.

New clonal polyps develop on, then break off their parent and eventually form new colonies, is an example of which type of asexual reproduction...

a)

Vegetative

b)

Binary fission

c)

Fragmentation

d)

Parthenogenesis

e)

Budding

37.

A flatworm is cut in half and grows into two flatworms, is an example of which type of asexual reproduction...

a)

Vegetative

b)

Binary fissioin

c)

Fragmentation

d)

Parthenogenesis

e)

Sporogenesis

38.

An amoeba replicates its genetic material and divides into 2 identical daughter cells is an example of which type of asexual reproduction...

a)

Vegetative

b)

Binary fission

c)

Fragmentation

d)

Parthenogenesis

e)

Sporogenesis

39.

From nodes on strawberry plant runners, new plants develop and set down roots, is an example of which type of asexual reproduction?

a)

Vegetative

b)

Binary fission

c)

Fragmentation

d)

Parthenogenesis

e)

Sporogenesis

40.

Asexual reproduction results in offspring that are...

a)

genetically different

b)

genetically identical

41.

The common asexual method of reproduction by hydras is called?

a)

Vegetative

b)

Binary fission

c)

Budding

d)

Fragmentation

e)

Parthenogenesis

42.

Which of the following is an advantage of asexual reproduction?

a)

There is greater genetic diversity in offspring.

b)

There is a longer development time for offspring.

c)

There is more food available for offspring.

d)

There is a greater number of offspring.

43.

Which of the following is a disadvantage of asexual reproduction?

a)

High genetic variability

b)

Requires a lot of energy

c)

Facilitates adaptation

d)

Offspring have limited ability to adapt

44.

Which of the following is not an example of asexual reproduction?

a)

An underground stem that grows along, sending up new plants at intervals.

b)

Yeast cells budding, then splitting into new cells.

c)

Stems run along above ground and send down roots and shoots at intervals.

d)

A sperm and an egg cell fusing to form a zygote.

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