Exam 2025
1. A bacterial cell gives rise to two genetically identical daughter cells by what process?
a) Meiosis
b) Budding
c) Binary fission ✅
d) Conjugation
2. All zygotes are:
a) Haploid
b) Diploid ✅
c) Triploid
d) Tetraploid
3. The products of mitosis are:
a) 4 genetically unique cells
b) 2 genetically identical nuclei ✅
c) 2 genetically different cells
d) 1 diploid and 1 haploid cell
4. Replication of DNA occurs during which phase of the cell cycle?
a) G1 phase
b) M phase
c) S phase ✅
d) G2 phase
, 5. Mature nerve cells that are incapable of division are in which stage?
a) S phase
b) G2 phase
c) M phase
d) G1 phase ✅
6. How does a nucleus in G1 differ from one in G2?
a) G2 has half the DNA of G1
b) G2 has twice the DNA of G1 ✅
c) G1 contains RNA, G2 does not
d) G1 has more chromosomes
7. The molecules that make up a chromosome are:
a) Lipids and proteins
b) DNA and RNA
c) DNA and proteins ✅
d) RNA and proteins
8. Diploid cells of a fruit fly have 10 chromosomes. How many chromosomes are in a
gamete?
a) 5 ✅
b) 10
c) 15
d) 20
9. A woman with type A blood has a child with type O blood. The man has type B blood.
What are the genotypes of the parents?
a) AA and BB
b) AO and BO ✅
c) AO and BB
d) AA and BO
10. What was a major contribution Mendel made to genetics?
a) Discovered DNA
b) First used microscopes in biology