A space opens within the inner cell mass that will form the
A) blastocoele.
B) lacunae.
C) amniotic cavity.
D) chorion.
E) allantois.
C
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Ionic bonds are considered to be strong chemical bonds. Yet, ions dissociate in water. Explain this apparent contradiction.
What will be an ideal response?
Atherosclerosis is
A. associated with low blood levels of cholesterol and heavy exercise. B. more common in younger people than in older people. C. the major cause of heart attacks. D. a disease in which the walls of arteries become more compliant. E. a thinning in the walls of arteries.
We have unique patterns on our fingers, toes, palms, and soles created by:
A) dendritic (Langerhans) cells. B) cleavage lines. C) Merkel cells. D) epidermal ridges.
Mucus secreted by mucous membranes mainly serves as a protection against
A. excessive sugar absorption. B. cold and hot. C. viruses and bacteria. D. trauma.