How many RNA codons encode 60 amino acids?
A. 180
B. 30
C. 20
D. 60
Answer: D
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The dermal endoskeleton of echinoderms is made of
a. cartilage. b. bone. c. calcium carbonate. d. chitin.
Four of the five answers listed below are related to genetic information. Select the EXCEPTION.
A. centromere B. chromosome C. sister chromatids D. glycolysis E. replication
Unlike eudicot roots, the center of most monocot roots is occupied by the:a
cortex. b. pith. c. phloem. d. vascular cambium. e. xylem.
Grizzly bears have large geographic ranges that consist of mosaics of forests and grasslands at varying altitudes. Grizzlies also require relatively pristine water sources in their range. Based on this, what species type best describes grizzly bears?
A. flagship species. B. endemic species. C. indicator species. D. keystone species. E. umbrella species.