Biology, 19.11.2020 23:10 rosieanneanney
Which of the following describes a positive feedback loop?
o When blood sugar concentration is too low, the endocrine system secretes hormones that increase blood sugar
concentration to a normal level.
o When the body senses that the heart rate is very high, it secretes hormones that decrease the heart rate.
o When blood sugar concentration is too high, the endocrine system secretes hormones that decrease blood sugar
concentration to a normal level.
o When someone is exercising intensely, the body secretes hormones that increase oxygen supply for cellular
respiration
Answers: 2
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Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.
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Which of the following describes a positive feedback loop?
o When blood sugar concentration is too...
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