Hair cells in the human ear are located on the
A) round window. B) basilar membrane.
C) pinna. D) tympanic membrane.
B
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Some heterotrophic organisms actually contain vestigial chloroplasts
A. true B. false
If a dividing cell had no functional Cdk2 protein, the cell would not be able to ____
a. phosphorylate cyclins b. transcribe the Cdk2 gene c. enter G1 d. translate cyclin mRNA e. degrade cyclins
At which point or stage would the majority of cells in the embryo no longer be stem cells?
A) the pre-embryo stage B) in the blastocyst C) after the organs start to develop D) A large number of stem cells would exist in all these stages.
What is an advantage of cloning horticultural crops rather than using sexual propagation to grow them?
A) Cloned plants are healthier and less susceptible to disease. B) Cloning plants allows for large production of plants with minimal effort and expense. C) Cloned plants grow more slowly but have stronger stems. D) Cloning provides more variation in flower color and size with minimal effort and expense.