A rock that is broken into smaller fragments as a result of freezing and thawing has experienced ________ weathering
Fill in the blank(s) with correct word
mechanical
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Membrane proteins serve many functions. One of the functions is transportation of substances across the membrane. If a cell biologist placed cells into an environment in which a chemical has been added that blocks the function of only carrier proteins, the process that will be affected is
A. active transport. B. osmosis. C. simple diffusion. D. phagocytosis. E. pinocytosis.
During phagocytosis, the phagolysosome forms before the phagosome forms.
Answer the following statement true (T) or false (F)
The data below suggest that the proportion of sexuals in snails increases with parasite load. Is this the only possible explanation for the observed differences in the degree of sexual reproduction?
a. Yes, the data points show a clear correlation between parasite load and sexual reproduction. b. Yes, factors other than parasites are unlikely to fine-tune the degree of sexual reproduction in natural populations. c. No, lakes and streams differ in their average parasite load. d. No, habitat differences between lakes and streams may be responsible for different levels of sexual reproduction.
Humans inhale by negative pressure.
Answer the following statement true (T) or false (F)