Select the three basic components of the cell.
_____ Plasma membrane
_____ Cytoplasm
_____ Nucleus
_____ Nucleoplasm
__X__ Plasma membrane
__X__ Cytoplasm
__X__ Nucleoplasm
The plasma membrane, cytoplasm, and nuceloplasm are the three basic components of a cell. The nucleus is classified as an organelle.
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During development, the left dorsal aorta and the common dorsal aorta form the descending aorta.
Answer the following statement true (T) or false (F)
The specificity of hormone action derives from
A) target cell receptors that are unique for all steroid hormones. B) target cell receptors that are unique for all nonsteroid hormones. C) target cell receptors that bind only certain neurotransmitters. D) target cell receptors that are unique for each hormone.
Active immunity requires
A. the transfer of antibodies from another individual. B. that all immune responses to the pathogen result in symptoms of illness. C. that an active virus be used in a vaccine. D. direct encounter with the antigen.
______ the time between signals sent from the same presynaptic terminal increases the strength of the graded potential. This is an example of ______ summation
Fill in the blank(s) with the appropriate word(s).