Which of the following groups includes carrier and channel proteins?
A) Recognition proteins B) Transport proteins
C) Connection proteins D) Receptor proteins
B
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As a new curator for a large public aquarium in your city, you are in charge of correctly identifying some of the animals presently in your care. You have two adult animals in tanks in front of you, and you know that one is a lamprey, and the other is a hagfish. Which feature would allow you to correctly identify each animal?
A. Lampreys lack jaws, but hagfish are jawed fish. B. Lampreys are parasitic, while hagfish are not parasitic. C. Hagfish must live in fresh water, while lampreys are entirely marine. D. Hagfish are noted for their extensive fins, while lampreys lack fins.
In eukaryotic cells, which occurs during the prophase of mitosis?
a. duplication of chromatids b. replication of DNA c. separation of sister chromatids d. breakup of the nuclear envelope e. appearance of the nuclear envelope
Bone matrix is secreted by
a. osteoblasts. b. osteocytes. c. osteolytes. d. osteoclasts. e. osteopores.
The multiple sites of DNA replication along eukaryotic chromosomes are known as
A) replicons. B) centromeres. C) telomeres. D) plasmodesmata. E) targets of rapamycin.