Tennessee Science Grade 7

Chapter 6: Cell Reproduction

Cell Reproduction

1
Which of these is a part of sexual reproduction?
A)regeneration
B)fission
C)budding cells
D)zygote
2
DNA code is __________ before being passed to new cells.
A)regenerated
B)destroyed
C)copied
D)doubled
3
The four nitrogen bases that are found in DNA are adenine, guanine, thymine, and _________.
A)cytosine
B)cytoplasm
C)chromatid
D)centriole
4
Of the two types of cells made by the human body, the majority of those cells are __________.
A)budding cells
B)body cells
C)incomplete cells
D)sex cells
5
The process of the cell cycle where the nucleus divides to create two identical nuclei is called __________.
A)mitosis
B)interphase
C)mutation
D)DNA
6
The process of meiosis ensures that organisms will have __________.
A)the same diploid number as its parents have
B)different numbers of chromosomes than its parents have
C)the ability to reproduce by budding
D)a different haploid number than its parents have
7
The final step in the mitosis process for animal cells is _________.
A)telophase
B)interphase
C)centrioles
D)chromosomes
8
If a diploid tomato cell has 24 chromosomes, how many chromosomes will the tomato's sex cells have?
A)48
B)12
C)6
D)24
9
The structure of DNA looks like __________.
A)a square of fabric
B)a twisted ladder
C)a straight length of rope
D)a round doughnut hole
10
Which of these is part of asexual reproduction?
A)regeneration
B)egg
C)zygote
D)sperm
11
Each of your cells uses __________ of the genes in a chromosome.
A)all
B)some
C)none
D)two
12
Which of these is the part of the cell that contains hereditary material?
A)interphase
B)mitosis
C)embryo
D)chromosome
13
What can fission be used to do?
A)asexual reproduction
B)meiosis
C)cell cycles
D)sexual reproduction
14
Which of these is a possible outcome of a mistake in meiosis?
A)An organism might change species.
B)An organism will produce multiple offspring at one time.
C)An organism might not be able to regenerate part of its body.
D)An organism might not grow normally.
15
How many chromosomes are in a human kidney cell?
A)23
B)46
C)8
D)1
16
The cell that is formed when fertilization occurs is called __________.
A)a mutation
B)a cytoplasm
C)a zygote
D)a ladder
17
During prophase, the two centrioles __________.
A)move to opposite ends of the cell
B)turn into chromosomes
C)help plant cells develop
D)disintegrate during the process
18
__________ is a base found in RNA but not in DNA.
A)Uracil
B)Cytoplasm
C)Mitosis
D)Adenine
19
When a mistake happens in the process of copying DNA, the result is called __________.
A)a nucleus
B)a zygote
C)a chromosome
D)a mutation
20
A sea star has one of its arms break off. That arm grows into its own separate organism through __________.
A)spindle fibers
B)chromosomes
C)sexual reproduction
D)regeneration
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