Hemocyanins do not contain iron, but instead contain __________
Fill in the blank with the correct word.
Answer: Copper
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Which of the following is not part of the skin?
A. Epidermis B. Papillary layer C. Hypodermis D. Sratum basale E. Dermis
Because the response of a nerve fiber is all-or-none, a greater intensity of stimulus does
not produce a stronger impulse. Indicate whether the statement is true or false
Identify the true statement(s) about receptors:
a. They may be a specialized ending of an afferent neuron b. They exist that are specific for every modality in the environment c. When stimulated enough may cause Na+ channels in the afferent neuron to open d. They may be cells closely associated with the peripheral endings of afferent neurons e. All of the above are true.
These are the smallest blood vessels in our body.
A. Venules B. Arterioles C. Capillaries D. Venous sinuses