As males and females age they produce lower volumes of sex hormones. For women, taking
testosterone to increase libido in becoming more common. Why is the same not common for males? What will be an ideal response?
While both males and females make less testosterone as they age, it is important to remember that
males decline from a much, much higher peak volume than do females. Thus, as males age the
volume of testosterone is still considerable, whereas for females the low volume they made when
younger gets lower still.
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These biological compounds are non-polar and insoluble in water:
A. proteins B. nucleic acids C. lipids D. carbohydrates
Which hormones are produced by the hypothalamus but secreted by the posterior pituitary gland?
A. oxytocin and antidiuretic hormone. B. thyrotropin-releasing hormone and corticotropin-releasing hormone. C. prolactin and growth hormone. D. prolactin and vasopressin. E. follicle-stimulating hormone and leutenizing hormone.
Choose the solution with the lowest water concentration.
a. Glucose 20 mM, urea 30 mM, NaCl 150 mM, CaCl2 10 mM b. Glucose 10 mM, urea 100 mM, NaCl 10 mM, CaCl2 50 mM c. Glucose 100 mM, urea 200 mM, NaCl 20 mM, CaCl2 20 mM d. Glucose 30 mM, urea 10 mM, NaCl 60 mM, CaCl2 100 mM
Atoms form bonds to:
A) fill their outer shells with electrons. B) obtain an equal number of protons and neutrons. C) fill their outer shells with protons. D) obtain an equal number of protons and electrons. E) fill their outer shells with neutrons.