AnswersHVA 26-27 IM Biology ALab: Diffusion Across a Semi-permeable Membrane

Lab: Diffusion Across a Semi-permeable Membrane Answers

13 verified answers
1
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What is the purpose of interphase in the cell cycle?

A
active growth and metabolism of the cell
B
active cell growth and cytokinesis
C
active division of the plasma membrane before mitosis
2
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What occurs during G1 and G2 in the cell cycle?

A
synthesis of the cell
B
growth of DNA
C
growth of the cell
3

Label the steps of mitosis using the drop-down menus.Label A Label B Label C Label D

A
Anaphase
B
Metaphase
C
Telophase
D
Prophase
E
Anaphase
F
Metaphase
G
Telophase
H
Prophase
I
Anaphase
J
Metaphase
K
Telophase
L
Prophase
M
Anaphase
N
Metaphase
O
Telophase
P
Prophase
4

Label A

A
A. Centromeres are split apart, and sister chromatids are pulled to opposite poles of the cell.
B
B. The chromosomes that were doubled become attached to the spindle fiber by their centromeres.
C
C. Chromatin in the cell coils into chromosomes that can be seen.
D
D. Sister chromatids are separated and contain identical copies of DNA.
5

Label B

A
A. Centromeres are split apart, and sister chromatids are pulled to opposite poles of the cell.
B
B. The chromosomes that were doubled become attached to the spindle fiber by their centromeres.
C
C. Chromatin in the cell coils into chromosomes that can be seen.
D
D. Sister chromatids are separated and contain identical copies of DNA.
6

Label C

A
A. Centromeres are split apart, and sister chromatids are pulled to opposite poles of the cell.
B
B. The chromosomes that were doubled become attached to the spindle fiber by their centromeres.
C
C. Chromatin in the cell coils into chromosomes that can be seen.
D
D. Sister chromatids are separated and contain identical copies of DNA.
7

Label D

A
A. Centromeres are split apart, and sister chromatids are pulled to opposite poles of the cell.
B
B. The chromosomes that were doubled become attached to the spindle fiber by their centromeres.
C
C. Chromatin in the cell coils into chromosomes that can be seen.
D
D. Sister chromatids are separated and contain identical copies of DNA.
8

After duplication, at what point does a cell become two cells with identical DNA?

A
starting in prophase
B
end of anaphase
C
end of cytokinesis
9

Which examples demonstrate growth of an organism as a result of mitosis?

A
a plant withering in the sunlight
B
a baby growing into a toddler
C
a seed becoming a plant
10

Which examples show repair or replacement of damaged cells?

A
a scrape being healed
B
scars forming where a cut once belonged
C
skin flaking off your arm in the winter
11

What is typical of cell reproduction when normal cells are reproduced in a petri dish from a tissue culture? Check all that apply.

A
Cells reproduce only when there is room in the petri dish.
B
Cells reproduce one layer thick and then stop reproducing.
C
Cells undergo unlimited reproduction by mitosis.
D
When a cell dies or is damaged, a new one is created to fill the empty spot.
12

What is typical of cell reproduction when cancer cells are reproduced in a petri dish from a tissue culture? Check all that apply.

A
Cells undergo 20 to 50 mitotic divisions.
B
Cells reproduce without limit.
C
Cells reproduce with multiple layers.
D
Cell reproduction never stops.
13

What is the benefit to using tissue cultures with cancer patients?

A
Doctors can study how quickly cancer spreads in the culture so they know what medicine to use.
B
Medications can be tested on the cancer culture before being injected into the patient.
C
The cancer culture can be studied to determine if oral medicine is the best treatment for the patient.

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