In gametogenesis in both human males and females (select all correct choices):
A. diploid stem cells are the precursors to
haploid gametes.
B. stem cells form during embryonic
development and divide by mitosis.
C. primary spermatocytes and primary
oocytes form by mitosis from diploid stem
cells.
D. secondary spermatocytes and secondary
oocytes form by meiosis from primary
spermatocytes and primary oocytes.
E. None of these choices are correct.
A,B,C,D
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Some fungal species can kill herbivores while feeding off of sugars from its plant host. What type of relationship does this fungus have with its host?
A) parasitic B) mutualistic C) commensal D) predatory
In eukaryotic cells, the hydrogens that go through the electron transport system from one sugar (glucose) molecule produce
A. six ATPs. B. eight ATPs. C. seventy-six ATPs. D. thirty-two ATPs.
Classification of protozoans is based primarily on the type of motility observed in the trophozoite stage. Identification can also be made by
A) Examination of tissue specialization B) Examination of the cyst C) Determining a lack of nuclei D) Determining the level of multicellularity
Which choice below correctly matches organelle with function?
A) smooth endoplasmic reticulum–lipid production B) lysosome–energy generation C) cytoskeleton–recycling of materials D) mitochondria–food generation