During gastrulation in frogs, cells from the animal pole spread over the embryo and form the
A) endoderm.
B) ectoderm.
C) archenteron.
D) blastopore.
E) blastula
Answer: B) ectoderm.
You might also like to view...
________ arises when different microbes within a population or community try to acquire the same resource.
A. Amensalism B. Disruption C. Syntropism D. Competition
The breakdown of large molecules by enzymes and the addition of water is known as a ____ reaction
a. oxidation b. reduction c. condensation d. hydrolysis e. decarboxylation
As a result of testing an experimental drip on a vertebrate cell, you notice that the cell cortex becomes more fluid, and
although the cell remains strong, it loses its ability to move. Based on this evidence, you correctly conclude that the drug most directly affected:a. myosin. b. ?-tubulin. c. ?-tubulin. d. actin filaments. e. intermediate filaments.
Which of these structures converts highly toxic ammonia into urea, a less toxic form of nitrogenous waste?
A) Muscles B) Liver C) Spleen D) Pancreas E) Kidney