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Bio 100 Exam 3 Comprehensive Test Paper Questions And Solutions

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BIO 100 EXAM 3 COMPREHENSIVE TEST PAPER QUESTIONS AND SOLUTIONS

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BIO 100 EXAM 3 COMPREHENSIVE TEST PAPER
QUESTIONS AND SOLUTIONS

◉ What factors are evaluated before a cell is allowed to proceed
through the G1 checkpoint?
Answer: a. growth signals
b. availability of nutrients
c. the integrity of cellular DNA


◉ During which stage of the cell cycle is cell growth and replication
of organelles most significant?
Answer: G1 phase


◉ The haploid (n) number of chromosomes for a human being is
Answer: 23.


◉ Interphase
Answer: a. occupies the majority of the cell cycle
b. includes G1, S and G2 stages
c. results in an increase in cell size


◉ Which of the following is NOT true concerning mitosis?

, Answer: Animal cells form a cell plate during cytokinesis while plant
cells do not.


◉ The region that contains the genetic information in a bacterial cell
is called the
Answer: nucleoid.


◉ Another name for a tetrad is a/an
Answer: bivalent.


◉ To what does the term chiasma refer?
Answer: a structure that holds together homologues during
crossing-over


◉ During which stage of meiosis does crossing-over occur?
Answer: prophase I of meiosis I


◉ Homologous chromosomes are similar in all of these
characteristics EXCEPT
Answer: carry the same alleles for all traits.


◉ What is the importance of crossing-over?

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