Which of the following statements best compares the ovary, ovule, and egg?
A. The three terms are synonymous.
B. The ovary is the lower part of the pistil that houses the ovules (also called eggs).
C. An ovule is the lower part of the pistil that houses the ovary that in turn contains the eggs.
D. Ovules are small ovaries and either can produce eggs.
E. The ovary is the lower part of the pistil that houses the ovules that in turn contain the eggs.
E. The ovary is the lower part of the pistil that houses the ovules that in turn contain the eggs.
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In recombinant DNA techniques, the gaps in the paired DNA fragments are closed by ____
a. restriction enzymes b. DNA ligase c. DNA polymerase d. DNA replicase e. reverse transcriptase
A patient has a variety of cellular problems, including proteins in the endomembrane system going to the wrong locations, and no synthesis of estrogen or testosterone. Identify the organelle-symptom pair that is defective.
A. The protein location problem is associated with the Golgi apparatus and the lack of testosterone production is an issue with the rough ER. B. A problem in the rough ER is responsible for the protein location problem, and a problem in the smooth ER is responsible for the estrogen and testosterone problem. C. A problem in the smooth ER is responsible for the protein location problem, and an issue in the Golgi apparatus is responsible for the production of estrogen and testosterone. D. Protein sorting normally occurs in the peroxisomes and is not functioning properly, and a damaged rough ER cannot produce estrogen and testosterone.
The use of venom for paralyzing prey is common in
a. cowries. b. Triton's trumpet snail. c. cone snails. d. mantis shrimp. e. sea stars.
The approach known as catastrophism explains Earth's geological features appealing to:
a. sudden catastrophic geological events. b. large-scale geological events. c. the same geological processes currently observable. d. A and B.