The Burgess Shale preserves a remarkable fossil record of:
A. delicate flowers and mushrooms from the
early invasion of land plants.
B. marine life during initial diversification of
animals in the Cambrian Period 505 million
years ago.
C. plants, insects, and mammals around 50
million years ago, as the age of mammals
began.
D. the tracks of dinosaurs walking on land.
E. molecular evidence of bacteria and other
organisms.
B
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What would be the consequence if an individual was homozygous for an IBP that could not bind iron but could bind to the IRE?
A. Unregulated transferrin receptor levels B. Increased degradation of ferritin C. Possible iron toxicity to the cells at levels of iron that would not normally be toxic to a cell D. There would be no predicted consequence to iron metabolism in the cell
In what order would a vaccination needle pass
through the layers of the skin?
a. dermis-hypodermis-epidermis b. dermis-epidermis-hypodermis c. hypodermis-dermis-epidermis d. epidermis-dermis-hypodermis e. epidermis-hypodermis-dermis
Bones in joints are connected by
a. ligaments. b. cartilage. c. tendons. d. fibrocartilage discs. e. latticework.
The right and left hemispheres of the cerebrum are connected by the:a
central sulcus. b. corpus callosum. c. substantia nigra. d. central canal. e. corpus striatum