What kinds of angiosperms have reverted to wind pollination?
A. grasses
B. oaks
C. birches
D. All of these are correct.
Answer: D
Biology & Microbiology
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Stem cells
A. have an almost unlimited capacity to divide. B. can differentiate into different tissues. C. may be used to test the effects of drugs on human cells. D. come from fetal material. E. All of the above
Biology & Microbiology
Describe the process by which botulinum toxin interrupts the crossbridge cycle.Provide other possible uses for this
toxin.
Indicate whether the statement is true or false.
Biology & Microbiology
Based on the biological hierarchy of organization, which of the following would be more inclusive than a cell?
a. atom b. organism c. molecule d. organelle
Biology & Microbiology
In an mRNA molecule, each 3-base sequence is called a ____________ . Any one amino acid can be coded for by several of these 3-base sequences.
What will be an ideal response?
Biology & Microbiology