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7th Grade EOY Life Science Final Review Part 1
Test Description: A review of the 2015-16 Life Science Curriculum
Instructions: Answer all questions to get your test result.
1) A COMPLETE copy of a human's traits can be found in...
A
only the brain
B
only the red blood cells
C
the sex cells
D
the nucleus of all normal body cells
2) The instructions that determine coat color of any animal are stored in the
A
cytoplasm of skin cells
B
mitochondria of hair cells
C
membrane of every cell
D
chromosomes of every cell
3) When Jerome crossed 2 purple plants, there were 10 offspring that were purple and 3 offspring that were white.Which of the following statements best explains why some of the offspring have white flowers?
A
These offspring inherited a DNA sequence coding for white flowers from each parent plant.
B
These offspring inherited a DNA sequence code for white flowers from only one parent's plant.
C
These offspring were created by asexual reproduction
D
These offspring were produced in a dark environment
4) Which statement best describes the relationship between DNA, genes, and chromosomes?
A
Chromososomes are small parts of genes that hold essential DNA.
B
Chromosomes are special organelles that copy DNA and genes.
C
Chromosomes are compact strands of DNA that store many genes.
D
Chromosomes, genes, and DNA all mean the same thing.
5) In peas, yellow color (Y) is dominant to green (y). What is the probability that the offspring will be green peas when a hybrid pea plant and a pure green pea plant are crossed?
A
no chance for green pea offspring
B
75% chance
C
50% chance
D
25% chance
6) It has been discovered that komodo dragons have the ability to reproduce asexually. What evidence would best support this claim?
A
the offspring grow very rapidly
B
the offspring have new behaviors that are not learned from the parents
C
the offspring have unknown (new) sections of DNA
D
the offspring have identical DNA to the parent
7) A section of DNA is called a
A
nucleus
B
chromosome
C
base-pair
D
gene
8) The number of chromosomes found in a sex cell is ____________ the number of chromosomes found in normal body cells.
A
equal to
B
half
C
twice
D
three times
9) Chromosomes are found in the _______________
A
cell wall of plant cells
B
floating in the cytoplasm of an eukaryotic cell
C
nucleus of a cell of an organism
D
chloroplasts of animal cells.
10) Humans have ____________chromosomes in their SEX cells.
A
46
B
23
C
92
D
138
*select an answer for all questions
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