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Cell Reproduction - Exam and Keystone Review Flashcards | StudBud
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Cell Reproduction - Exam and Keystone Review
Cell Reproduction - Exam and Keystone Review
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A #biology quiz on the basics of #cell #reproduction
Flashcards
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Questions
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Answers
1
A cell w/36 chromosomes undergoes mitosis. How many chromosomes will each / two new cells have?
18 chromosomes
9 chromosomes
2 chromosomes
36 chromosomes
2
What is the significance of meiosis in helping to maintain continuation of a species?
Equal numbers of eggs and sperm are produced by meiosis.
Meiosis produces eggs and sperm that are alike.
Meiosis passes traits thru gametes in asexual reproduction.
Meiosis produces genetic variation in the gametes.
3
During which stage of the cell cycle does the cell duplicate its DNA?
M stage
G1 stage
G2 stage
S stage
4
In which phase of meiosis do homologous chromosomes align as tetrads in the middle of the cell?
prophase I
metaphase I
metaphase II
prophase II
5
_______ goes from diploid to diploid cells and ------ goes from diploid to haploid cells.
mitosis/meiosis
Interphase/mitosis
Interphase/meiosis
meiosis/mitosis
6
What term is used to mean, "chromosome pairs" with DNA segments, or genes, for the same traits?
parallel
homozygous
homologous
analogous
7
Analysis of a sample human cells' nuclei have 23 chromosomes. What types of cells are these?
gametes/sex cells
skin cells
white blood cells
liver cells
8
What process is taking place in the illustration shown below?
crossing over
prophase II
fertilization
polyploidy
9
Describe the actions of the cell’s chromosomes during metaphase, a stage of mitosis.
They duplicated.
They condense to become chromatin.
They move toward the poles of the cell.
They line up in the middle of the cell.
10
What are the structures labeled A in the drawing?
spindle fibers
centromeres
centrioles
chromatids
11
In what organism type does cell division end w/a plate between daughter nuclei in cytokinesis?
plant
bacterium
animal
protist
12
Carcinogens can cause failures in cell regulation signals of cycling. What might occur?
apoptosis
normal mitosis
uncontrolled cell growth in the form of cancer
cell plates form
13
Mitosis, a stage in the cell cycle, is important for what reason?
reduction of the cell’s chromosome number
growth and repair of an organism
removal of diseased cells
division of the cytoplasm
14
In which stage of meiosis does number of chromosomes decrease from diploid (2n) to haploid (n)?
prophase I
Telophase II
Telophase 1
prophase II
15
During which phase of mitosis are sister chromatids pulled away to opposite ends of the cell?
prophase
telophase
metaphase
anaphase
16
Telophase is followed by division of cytoplasm, of daughter cells. What is this process called?
interphase
prophase
cytokinesis
synthesis phase
17
Which description best fits the activity of a cell during interphase?
The cell carries on metabolism and normal functions.
The cell differentiates to have a new function.
The cell splits in two.
The cell splits in two, w/ 1/2 normal number of chromosomes.
18
What stage of mitosis is shown in the drawing?
telophase
metaphase
prophase
anaphase
19
Which description best identifies characteristics of asexual reproduction?
one parent, no gamete union, offspring identical to parent
two parents, gamete union, offspring similar to parents
two parents, no gamete union, offspring identical to parent
one parent, gamete union, offspring similar to the parent
20
Which statement describes the number of chromosomes in a newly formed cell after mitosis?
They are half the number of the parent cell.
They are double the number of the parent cell.
They are equal to the number of the parent cell.
They are double the number of two parent cells.
