In addition to fertilizing the egg, sperm also ____
a. assist the fertilizing sperm in penetrating the egg
b. trigger chemical changes in the egg
c. dissolve the outer barriers surrounding the oocyte
d. release chemicals to speed cell division in the zygote
e. trigger chemical changes in the egg that prevent the entry of more than one sperm
e
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For which of the following diseases are there
vaccines that provide protection against the disease?
a. measles b. mumps c. rubella d. chicken pox e. all of these
Choose the letter of the best match from the following:A. protodermB. vascular cambiumC. apical meristemD. procambiumE. ground meristemProduces parenchyma, collenchyma, and sclerenchyma cells.
Fill in the blank(s) with the appropriate word(s).
HCG is secreted by the ____
a. blastocyst b. ovary c. hypothalamus d. anterior pituitary e. uterus
In spite of the benefits offered by genetic screening for newborns, critics charge that patients’
____________________ rights are violated because the programs are mandatory. Fill in the blank(s) with the appropriate word(s).