The first portion of the seedling to emerge from the
seed coat is indicated by
a. A.
b. B.
c. C.
d. one of these, but it is impossible to predict which
one.
e. none of these.
Answer: c
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Comparative embryology helped clarify the relationships among major groups of animals. The bilaterians, for example, can be divided into the _____ based on the developmental fate of the blastopore
A. protostomes and deuterostomes B. coelomates and acoelomates C. coelomates and pseudocoelomates D. cnidarians and radiolarians E. protostomes and coelomates
The biosphere
a. is located in the Northern Hemisphere. b. contains organisms with similar needs. c. has environmental conditions of similar temperature, pressure, and salinity. d. supports all of life on earth. e. is restricted to the continents.
Filtration occurs in the region labeled____
a. 1 b. 2 only c. 3 only d. 4 e. 2 and 3
What exactly does transfer RNA (tRNA) transfer?
A) amino acids to the RNA polymerase during transcription B) carbohydrates throughout the cytoplasm during transcription C) nucleotides that are to be added to a growing polypeptide chain D) the two ribosomal subunits to the start sequence and initiates the start of translation E) amino acids to the ribosome during translation