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Biology 117 Final Exam with 100- correct answers(verified for accuracy)
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Biology 117 Final Exam with 100- correct answers(verified for accuracy)
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Biology 117 Final Exam with100% correct
answers(verified for
accuracy)
Which type of reproduction creates offspring with the highest
amount of genetic diversity, sexual or asexual reproduction? Why? -
answer Sexual reproduction (fusion of haploid gametes to form
diploid zygote) because asexual reproduction produces offspring
that are genetically identical to parent
What is budding? - answer offspring form on or in the parent via
mitosis
when fully formed, offspring break free of the parent
ex/ occurs in hydra
What is fission? - answer parent splits in two
ex/ occurs in anemones
What is parthenogenesis? - answer female offspring develop from
unfertilized eggs
ex/ occurs in lizards
What occurs for external fertilization to be successful? - answer
occurs in a moist environment
union of sperm and eggs require cooperative behavior
produce and release many gametes
,Internal fertilization - answer Fewer eggs
require specialized reproductive systems for the transport of
gametes and copulation
gonads produce the gametes
several tubes and glands to transport and protect gametes
Which hormones are produced by the hypothalamus and anterior
pituitary that triggers puberty in both male and female humans? -
answer LH (leuteinizing hormone)
FSH (follicle-stimulating hormone)
produce testosterone in males or estradiol in females
What are the terms used to describe the cells produced in each
stage of male gametogenesis? - answer spermatogonium (2n) -->
primary spermatocyte (2n) --> secondary spermatocyte (n) -->
spermatids (n) --> mature sperm cells (n)
What occurs between each stage of male gametogenesis? - answer
mitosis and differentiation
meiosis I
meiosis II
How many functional gametes are produced from one diploid germ
cell in male gametogenesis? - answer 4
Are all cells produced the same size in male gametogenesis? -
answer yes
What hormone do leydig cells produce and what is their function? -
answer testosterone
, What hormone do sertoli cells produce and what is their function? -
answer inhibin
In what structure do sperm cells mature, become motile, and gain
the ability to fertilize? - answer Epididymis
What are the terms used to describe the cells produced in each
stage in female gametogenesis? - answer oogonium (2n) -->
primary oocyte (2n) --> secondary oocyte + polar body (n) --> ootid
(n) --> mature egg cell/ovum (n)
What occurs between each stage in female gametogenesis? -
answer mitosis and differentiation
meiosis I
meiosis II
How many functional gametes are produced from one diploid germ
cell in female gametogenesis? - answer 1
Are all cells produced the same size in female gametogenesis? -
answer yes
What is the functional unit of the ovary? - answer the follicle
What occurs between the follicular phase and luteal phase of the
menstrual cycle? - answer ovulation
How does countercurrent exchange bring oxygen to a fetus
developing inside a placenta? - answer oxygen rich hemoglobin
comes in and delivers oxygen to fetus, oxygen poor goes out
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