What is one of the jobs of RNA Polymerase?
a
It builds and edits the mRNA during transcription
b
It adds new nucleotides to the DNA helix.
c
It forms bonds between amino acids during translation.
d
It separates DNA strands.
Question 16
The circled portion of DNA in the following picture is
a
Double
b
Nucleotide
c
Helix
d
Sugar
Question 17
Which of the following would cause a genetic disease to be inherited by a human embryo?
a
Some of the father's red blood cells expel their nucleus and die after a few weeks.
b
The mother undergoes random genetic changes that lead to cancer in her uterus.
c
The mother's skin cells are exposed to ultraviolet radiation, and they develop tumors.
d
A primary spermatocyte in the father forms a sperm cell with 22 chromosomes.
Question 18
Match the UNIT 6 Key Terms to their correct definition.
100+ Key Pictures | Download Free Images on Unsplash
Column A
1.
adenine:
adenine
2.
base pairing:
base pairing
3.
cytosine:
cytosine
4.
guanine:
guanine
5.
thymine:
thymine
6.
Inversion mutation:
Inversion mutation
7.
mutagen:
mutagen
8.
mutation:
mutation
9.
point mutation:
point mutation
10.
chromosomal mutation:
chromosomal mutation
Column B
a.gene mutation in which a single base pair in DNA has been changed
b.Principle that bonds in DNA and between RNA molecules can form only between complimentary bases
c.chromosomal mutation that flips a segment of the chromosome
d.one of four nitrogenous bases found in DNA and RNA; pairs with cytosine
e.one of four nitrogenous bases found in DNA and RNA; pairs with guanine
f.one of four nitrogenous bases found in DNA and RNA; pairs with thymine or uracil
g.chemical or physical agents in the environment that interact with DNA and may cause a mutation
h.a change in the DNA
i.
a change in number of chromosomes or a large amount of DNA in an organism
j.nitrogenous base found in DNA but not in RNA
Question 19
A child is born with cystic fibrosis, an inherited recessive disorder. No one in the family (on either side) for several generations is known to carry the gene or have the disorder. How can this be explained?
a
The genetic disorder formed from the mother's poor nutrition and prenatal care.
b
There was a mutation in the DNA, either in one of the gametes or the fertilized egg.
c
The child contracted the illness from another child when he was born.
d
The child developed the disorder when he was born; it is a result of a birth defect.
Question 20
According to the graph, which statement below is true?
Enzyme-graph.gif
a
This enzyme works equally well at all temperatures.
b
This enzyme works best at 10 degrees Celsius
c
This enzyme works best at 45 degrees Celsius
d
This enzyme works best at 60 degrees Celsius
Question 21
After eating a salty snack like potato chips, the cells in your mouth become saturated with salt. What happens to the cells in your mouth as they react to the ELEVATED salt environment?
a
water moves into the cell causing them to burst.
b
salt moves into the cell causing them to burst.
c
water moves out of the cell causing them to shrink.
d
salt moves out of the cell causing them to shrink
Question 22
Many people with diabetes require insulin to stay alive. Which best explains why the gene for human insulin is transferred into a bacterium for mass production?
a
The bacterium will produce insulin at a fast rate as an antibody response in reaction to the foreign gene.
b
The bacterium will quickly destroy the insulin gene and create a replacement, which is free of mutations.
c
The bacterium will quickly repair the insulin gene, which allows it to be reinserted into a human.
d
The bacterium will produce insulin at a fast rate by incorporating the gene into its own genetic code.
Question 23
Please match the following terms to their corresponding cell structure.
Brain Cells GIFs | Tenor
Column A
1.
cell membrane:
cell membrane
2.
nucleus:
nucleus
3.
chromosomes:
chromosomes
4.
cytoplasm:
cytoplasm
5.
centrioles:
centrioles
6.
mitochondria:
mitochondria
7.
ribosomes:
ribosomes
8.
lysosomes:
lysosomes
9.
Golgi apparatus:
Golgi apparatus
10.
smooth endoplasmic reticulum:
smooth endoplasmic reticulum
11.
rough endoplasmic reticulum:
rough endoplasmic reticulum
12.
cytoskeleton:
cytoskeleton
13.
flagella:
flagella
14.
cilia:
cilia
Column B
a.encloses and protects cell from outside environment
b.network of tubules and site of lipid and steroid synthesis
c.site of aerobic cellular respiration
d.has ribosomes, and a network of tubules and site of most protein synthesis in cell
e.involved in cell division, make spindle fibers
f.gives support/structure to the cell
g.long, whiplike projection from cell membrane
h.membrane bound structure containing cell's genome and nucleolus
i.holds instructions for the cell
j.gel-like substance in the cell
k.location to make/build proteins
l.clean-up crew for the cell( housekeeping)
m.short, hairlike projections on cell membrane
n.puts final touches on proteins and packages them
Question 24
Which of the following is found in viruses and NOT in cells?
a
ribosomes
b
cytosol
c
nucleolus
d
protein capsid
Question 25
The process where the cytoplasm divides is called________________
a
telophase
b
anaphase
c
cytokinesis
d
mitosis
c
cytokinesis