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BIO 256 Exam 1 Questions

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Biology

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Exam Practice

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1/17
Question 2
2 out of 2 points
A good example of a positive feedback mechanism would be
Selected
Answer:
Ovaries produce estrogen with leutinizing hormone (LH) stimulation,
estrogen stimulates more pituitary LH secretion
Question 3
2 out of 2 points
Which would be a normal measure of oxygen in arterial blood?
Selected Answer:
Question 4
2 out of 2 points
In a negative feedback loop used to maintain homeostasis, which of the following terms is
NOT likely to be used?
Selected Answer:
hypothesis.
Question 6
2 out of 2 points
When stress limits resources for organs, which organ receives top priority for receiving blood?
Selected Answer:
brain
Question 7
2 out of 2 points
Which is a less common element of the human body?
Selected Answer:
iron
Question 11
2 out of 2 points
Which release OH
-
in water?

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2/17
Selected Answer:
bases
Question 12
2 out of 2 points
Which pH would be considered alkaline?
Selected Answer:
pH 9.6
Question 13
2 out of 2 points
A solution that does not change pH with small additions of acid or base is called a
Selected Answer:
buffer.
Question 14
2 out of 2 points
When molecules have the same chemical formula, arranged in the same sequence, but
differing only in their spatial orientation of key functional groups, producing D-isomers and
L-isomers, they are called
Selected Answer:
stereoisomers.
Question 15
2 out of 2 points
Steroid hormones are
Selected Answer:
lipids.
Question 17
2 out of 2 points
The components of phospholipids include
Selected Answer:
glycerol, fatty acids, and phosphate group.
Question 18
2 out of 2 points

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Question 2 2 out of 2 points A good example of a positive feedback mechanism would be Selected Answer: Ovaries produce estrogen with leutinizing hormone (LH) stimulation, estrogen stimulates more pituitary LH secretion Question 3 2 out of 2 points Which would be a normal measure of oxygen in arterial blood? Selected Answer: 18.1 ml/100ml Question 4 2 out of 2 points In a negative feedback loop used to maintain homeostasis, which of the following terms is NOT likely to be used? Selected Answer: hypothesis. Question 6 2 out of 2 points When stress limits resources for organs, which organ receives top priority for receiving blood? Selected Answer: brain Question 7 2 out of 2 points Which is a less common element of the human body? Selected Answer: iron Question 11 2 out of 2 points Which release OH- in water? Selected Answer: bases Question 12 2 out of 2 points Which pH would be considered alkaline? Selected Answer: pH 9.6 Question 13 2 out of 2 points A solution that does not change pH with small additions of acid or base is called a Selected Answer: buffer. Question 14 2 out of 2 points When molecules have the same chemical formula, arranged in the same sequence, but differing only in their spatial orientation of key functional groups, producing D-isomers and L-isomers, they are called Selected Answer: stereoisomers. Question 15 2 out of 2 points Steroid hormones are Selected Answer: lipids. Question 17 2 out of 2 points The components of phospholipids include Se ...
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