Which of the following sequence of events of fertilization is in the proper order?
A. acrosomal reaction, binding of sperm to egg membrane, fast block to polyspermy, increase in egg cytosolic calcium, and then the slow block to polyspermy
B. binding of sperm to egg membrane, acrosomal reaction, fast block to polyspermy, slow block to polyspermy, and then an increase in egg cytosolic calcium
C. binding of sperm to egg membrane, acrosomal reaction, fast block to polyspermy, increase in egg cytosolic calcium, and then the slow block to polyspermy
D. acrosomal reaction, fast block to polyspermy, binding of sperm to egg membrane, increase in egg cytosolic calcium, and then the slow block to polyspermy
E. acrosomal reaction, fast block to polyspermy, binding of sperm to egg membrane, slow block to polyspermy, and then an increase in egg cytosolic calcium
A. acrosomal reaction, binding of sperm to egg membrane, fast block to polyspermy, increase in egg cytosolic calcium, and then the slow block to polyspermy
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The endosymbiotic theory has been developed to explain the emergence of ________.
A. prokaryotes B. viruses C. eukaryotes D. archaea E. bacteria
The osmoreceptors that detect and react to dehydration are located in the ____
a. hypothalamus b. adrenal glands c. efferent arteriole d. kidneys e. posterior pituitary
The "X" shaped chromosomal hereditary material can be packaged in this organelle in eukaryotic cells but not in prokaryotic cells. This organelle is the:
A. nucleoid. B. chloroplast. C. ribosomes. D. nucleus. E. mitochondria.
Transpiration water loss occurs mostly through which of the following structures?
A. epidermal cells B. guard cells C. vessels D. pores E. stomata