BIO 110 FINAL EXAM NEWEST 2025 ACTUAL

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BIO 110 FINAL EXAM NEWEST 2025 ACTUAL

EXAM COMPLETE 100 QUESTIONS AND

CORRECT DETAILED ANSWERS (VERIFIED

ANSWERS) |ALREADY GRADED A+

Where do the microtubules of the spindle originate during mitosis in animal cells?

• centromere
• centrosome
• centriole
• chromatid
• kinetochore - ANSWER-B

Movement of the chromosomes during anaphase would be most affected by a drug that prevents

• nuclear envelope breakdown.
• cell wall formation.
• elongation of microtubules.
• shortening of microtubules.
• formation of a cleavage furrow. - ANSWER-D 1 / 4

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Which is the first checkpoint in the cell cycle where a cell will be caused to exit the cycle if this point is not passed?

• G0
• G1
• G2
• S

E) M - ANSWER-B

I: n=2; II: n=4; III: n=1.

You have isolated DNA from three different cell types of an organism (above), determined the relative DNA contents for each type, and plotted the results. Which sample(s) might represent an animal cell in the G2 phase of the cell cycle?

• I
• II

C) III

• both I and II - ANSWER-B
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Which of the following is the most plausible explanation for the difference in time spent in S phase by cell type beta and cell type gamma? (Beta spent half as much time as gamma in S.)

• Gamma is unicellular and beta is multicellular.
• Beta is tetraploid and gamma is diploid.
• Gamma contains more DNA than beta.
• Beta reproduces asexually and gamma reproduces sexually.
• Beta is a plant cell and gamma is an animal cell. - ANSWER-

C

The following question refers to the essential steps in meiosis described below.

• formation of four new nuclei, each with half the chromosomes

present in the parental nucleus

• alignment of homologous chromosomes at the metaphase

plate

• separation of sister chromatids
• separation of the homologs; no uncoupling of the centromere
• synapsis; chromosomes moving to the middle of the cell in

pairs

Which of the steps take(s) place in both mitosis and meiosis? 3 / 4

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• 3
• 5
• 2 and 3 only
• 2, 3, and 5 - ANSWER-A

A certain (hypothetical) organism is diploid, has either blue or orange wings as the consequence of one of its genes on chromosome 12, and has either long or short antennae as the result of a second gene on chromosome 19. A female with a paternal set of one orange and one long gene chromosome and a maternal set composed of one blue and one short gene chromosome is expected to produce which of the following types of eggs after meiosis?

• All eggs will have the paternal types of gene combinations.
• Half the eggs will have maternal and half will have paternal

combinations.

• Each egg has a one-fourth chance of having blue long, blue

short, orange long, or orange short combinations.

• Each egg has a three-fourths chance of having blue long,

one-fourth blue short, three-fourths orange long, or one-fourth orange short combinations. - ANSWER-C

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