Life Unit Test Question Preview (ID: 5117)
Life Unit Test.
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Each human cell contains the genes for ________ traits.
a) one
b) two
c) thousands
d) 46
A mutation in your DNA can lead to ____________________________.
a) a paper cut
b) strep throat
c) cancer
d) cold
If an organism is pure dominant, their genotype would be _______________.
a) Bg
b) bb
c) Bb
d) BB
If an organism is hybrid, their genotype would be _______________.
a) BH
b) bb
c) Bb
d) BB
Variations of a gene are called _________________________.
a) alleles
b) genes
c) mutations
d) plasmids
You can be sure of a person's genotype if their phenotype is ______________
a) brown hair
b) recessive
c) dominant
d) hybrid
Each of your cells contains the instructions for ________________ genes.
a) 46
b) thousands of
c) 2
d) 23
Which of the following is an example of a phenotype?
a) red hair
b) BB
c) bb
d) Tt
Plants have the ability to make their own food because they contain this organelle.
a) cytoplasm
b) cell wall
c) chloroplast
d) cell membrane
In a DNA molecule the bond that holds the nitrogen bases together is called a _______________
a) oxygen bond.
b) water bond
c) nitrogen bond
d) hydrogen bond
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