While looking through a microscope in your anatomy lab, you see a cell whose cytoplasm has a pale pink color with fine granules and a tri-lobed deep purple nucleus. Determine what type of cell you see (be specific). Explain why you made this selection
What will be an ideal response?
You have likely seen a neutrophil, a type of leukocyte, while looking through the microscope. Neutrophils are granulocytes with a pale pink cytoplasm and fine granules that are difficult to see. Neutrophils have nuclei with three to seven lobes connected by thin strands of nucleoplasm.
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Which of the following does not contribute to skin color?
A. Hemoglobin B. Melanin C. Keratin D. Carotene E. All of the choices contribute to skin color.
In the process of ________, two substances are moved across a cell membrane in the same direction without directly using cellular energy. One of the substances can be moved against a concentration gradient by this process
A) countertransport B) cotransport C) simple diffusion D) active transport E) co-osmosis
When the pH rises above 7.45, a state of ________ exists
A) apotheosis B) alkalosis C) ptosis D) hydrosis E) acidosis
A bacterial toxin is known to block the release of ACh at the motor end plate of skeletal muscle. Consequently,
a. the skeletal muscle contracts with increasing force. b. the skeletal muscle contracts with increasing frequency. c. the ability to stimulate the muscle is impaired. d. other neurotransmitters would stimulate the muscle.