Which of the following individuals would have more mitochondria in her skeletal muscle?
A) A long-term hospice patient
B) A 50-year-old sedentary computer programmer
C) A model on a reduced-calorie diet
D) A newborn
E) A 22-year-old soccer player
E
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Substances that enter the cell usually do so through the
A) integral proteins. B) glycocalyx. C) peripheral proteins. D) glycolipids. E) cholesterol.
Parkinson's disease affects the cerebral basal ganglia, resulting in tremors in limbs, slowness in beginning and completing movements, and other abnormalities of muscle control. The specific population of neurons involved degenerates and thus fails to produce the neurotransmitter dopamine. An obvious treatment option to try is to administer dopamine, yet this is completely ineffective at
alleviating the symptoms. Propose a reason why this treatment fails, and a related alternative to address the dopamine deficit. (Hint: Think about how the brain protects itself from chemicals in the blood.) What will be an ideal response?
FSH can make the follicle cells more sensitive to LH by increasing ________.
A. LH receptors B. GnRH receptors C. theca cells D. GnRH production E. estrogen receptors
The arrector pili muscle contracts and pulls hairs upright when we are cold or frightened
Indicate whether the statement is true or false