Select the features that are lacking in amphibians but present in reptiles and that confer an advantage to reptiles for living on land.
_____ egg with an amnion, yolk sac, allantois, chorion, and shell
_____ skin resistant to water loss
_____ breathing by buccal pumping
_____ ability to concentrate urine
__X__ egg with an amnion, yolk sac, allantois, chorion, and shell
__X__ skin resistant to water loss
_____ breathing by buccal pumping
__X__ ability to concentrate urine
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Colchicine, a chemical extracted from the autumn crocus (Colchicum autumnale), inhibits the formation of
microtubules. Mitotic cells exposed to colchicine will therefore be arrested at ____.
a. anaphase b. interphase c. prophase d. telophase e. metaphase
Answer the question using the accompanying figure. Letter "C" in the diagram represents the ____ zone
a. neritic b. abyssal c. oceanic d. benthic e. intertidal
How many nucleotides are different in one sequence from those in the other?
a. 1 b. 2 c. 3 d. 4
Enzymes are specialized proteins. Where in the cell would enzymes be produced?
A) chloroplasts B) lysosomes C) mitochondria D) ribosomes