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2nd quarter exam review

Total questions: 15

Worksheet time: 10mins

Name
Class
Date
1.

This occurs after telophase, what is it called?

a)

cleavage furrow

b)

cytokinesis

c)

binary fission

d)

replication

2.

Which of the following are involved in asexual reproduction?

a)

fertilization

b)

meiosis

c)

sperm

d)

zygote

e)

none of these are involved in sexual reproduction

3.
How is the number of chromosomes in a human sex cell different from the number in a human body cell? 
a)
A sex cell has 23 chromosomes and a body cell has 46. 
b)
A sex cell has 46 chromosomes and a body cell has 23.
c)
A sex cell has chromosomes that are half
d)
A sex cell has chromosomes that are twice as long as those in a body cell. 
4.
In mitosis, the two resulting cells are
a)
different from the starting cell and identical to each other.
b)
different from the starting cell and different from each other.
c)
identical to the starting cell and different from each other.
d)
identical to the starting cell and identical to each other.
5.
The process on the left is:
The process on the right is:
a)
Left: meiosis
Right: meiosis
b)
Left: meiosis
Right: cloning
c)
Left: mitosis
Right: meiosis
d)
Left: mitosis
Right: mitosis
6.

Anaphase of mitosis ____________

Anaphase of meiosis ____________

a)

chromatids separate; homologous chromosomes separate

b)

centromeres move; kinetochrores move

c)

chromosomes replicate; chromosomes duplicate

7.

When do homologous chromosomes pair up and crossing over can occur?

a)

Prophase I

b)

Metaphase I

c)

Prophase II

d)

Metaphase II

8.

AaBb x AaBb gives you what ratio

a)

1:1:1:1

b)

9:3:3:1

c)

3:1:3:1

d)

2:2:2:2

9.
a)

1:2:1

b)

1:1

c)

3:1

10.

This image is called a karyotype. Notice number 21. There are 3 chromosomes instead of 2. What disorder is this?

a)

cystic fibrosis

b)

down syndrome

c)

mendelism

d)

parkinson's

11.

This scientist added DNAse to to prove that it was DNA and not protein that coded for hereditary information.

a)

Griffith

b)

Avery

c)

Hershey and Chase

d)

Watson and Crick

12.

These scientists used radioactive phosphorus to tag DNA.

a)

Griffith

b)

Avery

c)

Hershey and Chase

d)

Watson and Crick

13.

What is the purpose of this chart?

a)

Show how RNA is translated into amino acids

b)

Show how DNA is translated into amino acids

c)

Show how amino acids are translated in to DNA

d)

Show how amino acids are translated in to RNA

14.

Name the structure that is found in the cytoplasm during protein synthesis.

a)

mRNA

b)

tRNA

c)

rRNA

15.

What type of inheritance does the pedigree show?

a)

recessive

b)

sex-link recessive

c)

dominant

d)

incomplete dominance