Cystic fibrosis is caused by a gene encoding a protein involved in ________
A) metabolism of adenosine triphosphate
B) chloride transport
C) oxygen transport in blood cells
D) regulating cell cycle control
E) None of these choices
B
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The largest genus in the order Lactobacillales is ________ with around 100 species.
A. Streptococcus B. Leuconostoc C. Lactobacillus D. Listeria
What would be the consequence of removing a founder cell early in the development of
Caenorhabditis? a. The organism would continue to develop normally. b. The organism would develop normally but would be slightly smaller. c. The organism would not develop at all. d. The organism would be a hermaphrodite. e. The structures that normally develop from that cell would be missing.
The ABO blood groups in humans are determined by a multiple-allele system in which IA and IB are codominant and are both dominant to IO. A newborn infant is type A. The mother is type O. Possible phenotypes of the father are
a. A, B, or AB. b. A, B, or O. c. O only. d. A or AB. e. A or O.
Heart-shaped gametophytes produce swimming sperm; leaves of sporophytes develop from fiddleheads.
a. Mosses b. Ferns c. Conifers d. Gingkos e. Angiosperms