AnswersEDG Biology A wLabMitosis

Week 7 Test Answers

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Environmental factors determine whether or not all genetic traits lead to health issues.

A
T
B
F
2
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Which of the following is influenced only by heredity and not environmental factors?

A
obesity
B
diabetes
C
heart disease
D
muscular dystrophy
3

Which medical conditions are associated with large amounts of fat and sugar in your diet? Select three options.

A
diabetes
B
color blindness
C
heart disease
D
obesity
E
sickle cell anemia
4

Which practice has decreased the number of disease-carrying rats around homes and businesses?

A
refrigeration
B
garbage collection
C
lichen measuring
D
water treatment
5

Gene-environment interactions that occur during childhood _______.

A
do not effect adulthood
B
may not show noticeable effects until adulthood
C
do not effect childhood
D
do not cause behavioral problems
6

Which statement best describes the overall change that occurs as a result of mitosis?

A
One cell becomes two cells that have identical copies of DNA.
B
One cell becomes two cells that have different copies of DNA.
C
Two cells become two cells that have identical copies of DNA.
D
Two cells become two cells that have different copies of DNA.
7

Which equation represents fertilization?

A
haploid + diploid = diploid
B
diploid + haploid = haploid
C
haploid + haploid = diploid
D
diploid + diploid = diploid
8

Which series of diagrams correctly represents the order of mitosis?

A
The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the chromosomes line up at the center. In step 3, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 4, the cell is divided.
Option A
B
The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the cell is divided. In step 3, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 4, the chromosomes line up at the center.
Option B
C
The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the cell is divided. In step 3, the chromosomes line up at the center. In step 4, the chromatids separate from each other and are pulled to opposite ends of the cell.
Option C
D
The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 3, the chromosomes line up at the center. In step 4, the cell is divided.
Option D
9

Construction sites move lots of sediment. Which environmental factors are most likely affected by construction sites?

A
air quality and water quality
B
air quality and trash collection
C
trash collection and refrigeration
D
refrigeration and water quality
10

Which best defines a diploid cell during meiosis?

A
a cell that has double the number of chromosomes as the parent cell
B
a cell that has half the number of chromosomes as the parent cell
C
a cell that has double the number of chromosomes as the daughter cell
D
a cell that has half the number of chromosomes as the daughter cell
11

Tissue cultures (samples of cancer cells) are taken from cancer patients, and the cells are then grown in a laboratory. What is the purpose of growing cancer cells in a laboratory?

A
to test medicinal treatments before giving them to patients
B
to replace cancer cells with healthy cells
C
to provide evidence of cancer cells in the patient
D
to stop the cancer from growing in the patient
12

Which part of cell division is different in plant and animal cells?

A
cytokinesis
B
anaphase
C
mitosis
D
eukaryotic
13

Which best explains why males have a greater probability of being color blind than females?

A
Males only have to inherit the allele on the Y chromosome to be color blind.
B
Males only have to inherit the color blindness allele once to show the trait.
C
Males have to inherit two copies of the color blindness allele to show the trait.
D
Males have to inherit the allele on two X chromosomes to be color blind.
14

If an organism's diploid number is 12, what would be its haploid number?

A
3
B
6
C
24
D
48
15

Which best illustrates the result of the process of meiosis?

A
A pea plant has the same flower color as its parent plants.
B
A daughter looks different from both her mother and her father.
C
A cheetah cub has very similar fur to its mother.
D
A Labrador puppy looks exactly like its father.

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