i dont have the chapter or book available, these questions are just from worksheets, so id greatly appreciate anyone who can answer these to the best of his/her knowledge. thanks so much!
1) Progesterone, which is secreted by the corpus luteum, has the effect of
a) supressing LH prodcution
b) increasing LH production
c) stimulating FSH production
d) suppressing estrogen production
e) decreasing the thickness of the uterine lining
2) In certain parts of the Middle East where agriculture is done on a very limited scale, many people suffer from poor bone growth and poor healing of wounds. THis has been traced to a severe deficiency of fresh fruits. The underlying biochemical cause is a lack of
a) vitamin K
b) calcium
c)vitamin E
d) vitamin C
e) folic acid
In males, which of the following hormones is responsible for secondary sexual characteristics?
a) estrogen
b) progesterone
c) growth hormone
d) prolactin
e) testosterone
Sharks live in salt water but have body fluids that are slightly hypertonic to the water. This is because
a) sharks drink large quantities of salt water, which increase the ionic content of the body fluids
b) sharks secrete urea into the blood, which increases the ionic content of the blood
c) sharks absorb salts from the rectal gland that is associated with the gut
d) sharks absorb salts in specialized cells located in the gills called ionocytes
e) sharks do not produce antidiuretic hormone and thus they do not reabsorb water from the kidney tubule.
Which of the following blood cells produces antibodies?
a) monocytes
b) B-lymphocytes
c) eosinophil
d) basophil
e) thrombocytes
This neurotransmitter is found at neuromuscular junctions and central nervous system junctions.
a) norepinephrine
b) serotonin
c) dopamine
d) acetylcholine
e) epinephrine
A given cell has a membrane which is permeable to water but impermeable to solute. What will happen to that cell if it contains 1% solute and is placed in a solution containing 3% solute?
a) the cell will swell
b) the cell will shrink
c) the cell will remain the same size but will change shape to minimize surface area
d) the cell will remain the same size but will change shape to maximize surface area
e) the material inside the cell will be diluted
THere are three main steps to blood coagulation. In the first step, a prothrombin activator is released. In the second, prothrombin is converted to its active form. In the following third step, fibrinogen is converted to a smaller insoluble protein. Which of the following is the small insoluble protein?
a) prothrombin
b) thromoboplastin
c) fibrinogen
d) fibrin
e) thrombin
a resting, non-stimulated neuron is electrically_______along the outside of its surface membrane and electrically ______along the inside.
a) negative....positive
b) negative...neutral
c) neutral...positive
d) neutral...negative
e) positive...negative
Diabetes mellitus, which results from the body's inability to convert glucose to glycogen, and from the inability of cells to absorb glucose, is due to a deficiency of which of the following hormones?
a) glucogon
b) adrenalin
c) secretin
d) parathormone
e) insulin
Among married couples, complications can arise in pregnancy due to the Rh factor. These complications, however, can be avoided by taking a simple precautionary measure. This involves
a) treating Rh negative mothers of Rh positive babies with an injection of antibodies against the Rh positive antigen after the first pregnancy
b) treating Rh positive mothers of Rh negative babies with an injection of antibodies against the Rh negative antigen before the first pregnancy
c) treating Rh negative mothers of Rh positive babies with an injection of antibodies against the Rh negative antigen after the first pregnancy.
d) treating Rh positive mothers of Rh negative antigen after the first pregnancy
e) treating Rh positive fathers with an injection of antibodies against the Rh positive antigen
Neurtrophils in the human body are
a) phagocytes that engulf and digest bacteria
b) leukocytes that become specialized as B cells
c) leukocytes that become specialized as T cells
d) cells without nuclei that are fragments of large cells in the bone marrow
e) cells that develop from lymphoid stem cells
one of the three major classes of hormones is the steroids. they are produced in the
a) adrenal cortex and gonads
b) hypothalamus
c) liver and pancreas
d)thyroid
e) adrenal medulla
thanks!!!!!
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