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MOCT 5
Test Description: MOCT REVIEW
Instructions: Answer all questions to get your test result.
1) Organisms that have two identical allele for a particular trait are said to be
A
hybrid.
B
heterozygous.
C
homozygous.
D
dominant.
2) In humans, a male has
A
one X chromosome and one Y chromosome.
B
two Y chromosomes.
C
one X chromosomes only.
D
two X chromosomes.
3) Genes contain instructions for assembling
A
pyrimidines.
B
proteins.
C
purines
D
nucleosomes.
4) What results from the removal of a phosphate group from ATP?
A
the production of mehanical energy.
B
the absorption of energy by chlorophyll.
C
the creation of energy.
D
the release of energy.
5) The offspring of the cross-fertilization of pea plants with purple flowers and pea plants with white flowers are called
A
hybrids.
B
gametes.
C
recessive breeds.
D
pure breeds.
6) In eukaryotes, electron transport occurs in the
A
chloroplasts.
B
cell membrane.
C
cytoplam
D
mitochondria.
7) The process of DNA fingerprinting is based on the fact that.
A
the most important genes are different among most people.
B
most people have DNA that contains repeats.
C
most genes are dominant.
D
no two people, except identical twins, have exactly the same DNA.
8) A punnett sqaure shows all of the following EXCEPT
A
all possible results of a genetic cross.
B
the alleles in the gametes of each parent;
C
the actual results of a genetic cross.
D
the genotypes of the offspring.
9) During photosynthesis light energy is converted to the energy in chemical bonds. What also happens according to the predictins of the second law of thermodynamics?
A
the light and chemical energy are equal
B
chemical energy is converted to light energy.
C
heat is released in the process
D
matter is lost in the process
10) How many codons are needed to specify three amino acids?
A
6
B
12
C
9
D
3
*select an answer for all questions
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