. The substance that typically provides rigidity to fungal cell walls, and is found in some animals, is
____.
a. lignin
b. cellulose
c. starch
d. collagen
e. chitin
E
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Small animals such as insects and some lizards are able to “walk on water.” This ability is due
to the
a. strong bonds between oxygen and hydrogen atoms forming the water molecule. b. attraction among different water molecules due to the unequal attraction of electrons of hydrogen and oxygen in individual water molecules. c. bonds that form between two atoms that are oppositely charged. d. strong bonds that form between water molecules due to sharing of electrons in the same orbit.
Which of the following is NOT a risk factor for lung cancer?
a. smoking b. asbestos exposure c. radiation d. exposure to industrial chemicals e. regular exercise
When two atoms share a pair of electrons, this type of chemical bond is
A. ionic. B. covalent. C. hydrogen. D. negative-positive.
Which of the following is not considered to be one of the major components of health-related physical fitness?
What will be an ideal response?