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1. Which of the following are complementary base pairs in DNA? Hide answers
adenine-thymine; uracil-cytosine
adenine-thymine; guanine-cytosine
adenine-guanine; thymine-cytosine
uracil-thymine; guanine-cytosine
2. Which represents the path of protein synthesis? Hide answers
RNA>Protein>DNA
Protein>RNA>DNA
DNA>Protein>RNA
DNA>RNA>Protein
3. The bases in a DNA molecule are bonded together by __________________ bonds. Hide
answers
Ionic
Nitrogen
Hydrogen
Basic
4. Transcription occurs in the _________________; Translation occurs in the
_________________. Hide answers
Nucleus, ribosome
ribosome, nucleus
Cytoplasm, ribosome
Mitochondria, cytoplasm
5. DNA replication results in two DNA molecules, Hide answers
each with two new strands
one with two new strands and the other with two original
each with one new strand and one original strand
each with two original strands
6. The backbone of a DNA molecule is made up of alternating _______ and _____ groups. Hide
answers
nitrogen bases, phosphate
enzymes, nitrogen
deoxyribose sugar, phosphate
ribose sugar, phosphate
7. mRNA ready for translation contains which of the following? Hide answers
exons only
introns only
both introns and exons
neither introns nor exons
8. Mitosis is a process by which Hide answers
DNA is replicated
cells grow in size
cytokinesis occurs
a cell's nucleus divides
9. Which of the following is not a part of mitosis? Hide answers
prophase
interphase
telophase
anaphase
10. The stage of the cell cycle that occupies most of a cell's life is __________________. Hide
answers
prophase
cytokinesis
mitosis
interphase
11. Which of the following represents mitosis in the proper sequence? Hide answers
prophase, metaphase, anaphase, telophase
interphase, prophase, metaphase, anaphase, telophase
interphase, prophase, metaphase, telophase
metaphase, prophase, anaphase, telophase
12. Why is the process of meiosis necessary? Hide answers
It causes organisms to grow in size.
It allows organisms to repair injured cells.
It allows organisms to reproduce asexually.
It allows organisms to produce gametes.
13. If an organism's diploid number is 12, its haploid number is Hide answers
12
6
24
0
14. The stage of meiosis during which homologous pairs line up at the equator of the cell is
called Hide answers
Prophase I
Anaphase I
Metaphase I
Metaphase II
15. In meiosis, a diploid parent cell divides to produce Hide answers
Four diploid cells that are genetically identical
Two diploid cells that are genetically identical
Four haploid cells that are genetically different
Two haploid cells that are genetically identical
16. The process enabling cells to become specialized is Hide answers
epigenetics
mitosis
differentiation
fertilization
17. Which term refers to the role the environment plans in affecting our genomes? Hide answers
differentiation
specialization
epigenetics
homeotics
18. An individual with two different alleles for a trait Hide answers
homozygous
heterozygous
dominant
recessive
19. Blood type of a person who inherited a B allele from one parent and an O from another Hide
answers
type B
type O
type AB
type BO
20. Pattern of dominance where both alleles are expressed independently in a heterozygous
offspring Hide answers
complete dominance
incomplete dominance
codominance
homozygous
21. A 3 base sequence of mRNA that codes for an amino acid is a Hide answers
chromosome
codon
enzyme
intron
22. The process of making mRNA from a DNA template is called Hide answers
translation
replication
transcription
splicing
23. Genes contain instructions for assembling Hide answers
purine from tRNA
proteins from rRNA
proteins from DNA
pyrimidines from DNA
24. A cell that has 8 chromosomes goes through mitosis, how many chromosomes in each
daughter cell Hide answers
4
8
16
0
25. A segment of DNA located on a chromosome that codes for a protein Hide answers
genetics
gene
genotype
phenotype