Bio 93 Final Exam Practice Questions And All Correct Answers.
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Course
Bio 93
Institution
Bio 93
1)Researchers were investigating the effects of bicoid in fruit fly development. In one
experiment, they took a normally developing embryo and injected bicoid mRNA into the
posterior end of the embryo. What result would they most likely observe?
A. The embryo would develop with a normal posterio...
Bio 93 Final Exam Practice Questions
And All Correct Answers.
1)Researchers were investigating the effects of bicoid in fruit fly development. In one
experiment, they took a normally developing embryo and injected bicoid mRNA into the
posterior end of the embryo. What result would they most likely observe?
A. The embryo would develop with a normal posterior end and posterior structures on the
anterior end
B. The embryo would develop with a normal anterior end and anterior structures on the
posterior end
C. The embryo would develop with anterior structures on the posterior end and posterior
structures on the anterior end - Answer B
2) Inebriated (drunk) people have difficulty touching their noses with their eyes closed. Which part
of the brain has been most impaired to bring about this difficulty?
A. Hypothalamus
B. Cerebellum
C. Cerebral cortex
D. Broca's area
E. Limbic system - Answer B
3) Refer to the drawings in the figure below of a single pair of homologous chromosomes as they
might appear during various stages of either mitosis or meiosis: Which diagram represents
anaphase I of meiosis?
A. I
B. II
C. IV
, D. V - Answer A
4) Muscle cells differ from nerve cells mainly because they
A. Express different genes
B. Contain different genes
C. Use different genetic codes
D. Have unique ribosomes - Answer A
5) Assume the DNA content of a diploid cell in the G1 phase of the cell cycle is x. Then the DNA
content of the same cell at metaphase of meiosis I will be ____ and the DNA content of a single
cell at metaphase of meiosis II will be_____.
A. 2x, x
B. 0.5x, 0.25x
C. X, 2x
D. 0.5x, 2x
E. 2x, 0.5x - Answer A
6) Herbicides are often used to kill weeds and unwanted plants from farmland. Researchers
were investigating new types of herbicides and assessed how well they killed weeds. The researchers
found that the herbicides were directly acting on the part of photosynthesis involved with water
oxidation. What part of photosynthesis were the herbicides acting on?
A. Photosystem I
B. The electron transport chain between photosystems I and II
C. Photosystem II
D. The electron transport chain after photosystem II
E. The Calvin cycle - Answer C
7) Which of the following statements INCORRECTLY describes an aspect of an indicated point in the
cell cycle (with M phase being mitosis)?
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