BIO 1407 EXAM 1 | RANDELL BIO 1407 MCC | MCLENNAN COMMUNITY
COLLEGE BIOLOGY STUDY GUIDE & PRACTICE QUESTIONS
Name the Pre-Zygotic Barriers of the Biological Species Concept - ✔✔Habitat, Temporal, Mechanical,
Behavioral, and Gametic
Explain Habitat Reproductive Isolation - ✔✔Populations do not occupy the same ecological
environments - ie big cats dispersed on differing continents
Explain Temporal Reproductive Isolation - ✔✔Populations do not interact due to variants in timing - ie
nocturnal frogs vs frogs
Explain Mechanical Reproductive Isolation - ✔✔Reproductive organs are not compatible
Explain Behavioral Isolation - ✔✔Populations require specialized behaviors / mating rituals - ie a birds
specific call or dance
Explain Gametic Reproductive Isolation - ✔✔Populations gametes are not compatible - ie sperm cannot
penetrate and fertilize egg
What is a cladogram? - ✔✔A branching diagram showing the cladistic relationship between a number
of species.
Explain Synapomorphies - ✔✔Traits that are expressed in several species that indicate a common
ancestor. For example, all Cnidarians possess nematocysts - stinging organelles.
What is a virus? - ✔✔A tiny, parasitic, nonliving, particle that infects a cell and uses the cells organelles
and ATP to replicate itself.
What are the two replicative cycles of viruses? - ✔✔Lytic and Lysogenic
Explain the lytic cycle of a virus - ✔✔1. Viral genome enters cell
2. Viral genome is transcribed
3. Viral genome is replicated
4. Viral particles assemble
5. Viral particles exit the cell as virions, killing the host
Explain the Lysogenic Cycle/Quiescent state of a virus - ✔✔Lysogenic Cycle -
1. Viral genome enters cell
2. Viral DNA integrates into host cell chromosomes
3. Host cell DNA polymerase copies chromosomes
4. Cell divides via binary fission or mitosis
List the Harmful effects of viruses on mankind - ✔✔1. Human Disease
2. Animal Disease
3. Agricultural Disease
COLLEGE BIOLOGY STUDY GUIDE & PRACTICE QUESTIONS
Name the Pre-Zygotic Barriers of the Biological Species Concept - ✔✔Habitat, Temporal, Mechanical,
Behavioral, and Gametic
Explain Habitat Reproductive Isolation - ✔✔Populations do not occupy the same ecological
environments - ie big cats dispersed on differing continents
Explain Temporal Reproductive Isolation - ✔✔Populations do not interact due to variants in timing - ie
nocturnal frogs vs frogs
Explain Mechanical Reproductive Isolation - ✔✔Reproductive organs are not compatible
Explain Behavioral Isolation - ✔✔Populations require specialized behaviors / mating rituals - ie a birds
specific call or dance
Explain Gametic Reproductive Isolation - ✔✔Populations gametes are not compatible - ie sperm cannot
penetrate and fertilize egg
What is a cladogram? - ✔✔A branching diagram showing the cladistic relationship between a number
of species.
Explain Synapomorphies - ✔✔Traits that are expressed in several species that indicate a common
ancestor. For example, all Cnidarians possess nematocysts - stinging organelles.
What is a virus? - ✔✔A tiny, parasitic, nonliving, particle that infects a cell and uses the cells organelles
and ATP to replicate itself.
What are the two replicative cycles of viruses? - ✔✔Lytic and Lysogenic
Explain the lytic cycle of a virus - ✔✔1. Viral genome enters cell
2. Viral genome is transcribed
3. Viral genome is replicated
4. Viral particles assemble
5. Viral particles exit the cell as virions, killing the host
Explain the Lysogenic Cycle/Quiescent state of a virus - ✔✔Lysogenic Cycle -
1. Viral genome enters cell
2. Viral DNA integrates into host cell chromosomes
3. Host cell DNA polymerase copies chromosomes
4. Cell divides via binary fission or mitosis
List the Harmful effects of viruses on mankind - ✔✔1. Human Disease
2. Animal Disease
3. Agricultural Disease
