What is a common function of T3 and T4?
A. cause an increase in the deposition of calcium in the bones
B. blood phosphate levels decrease
C. muscle contraction
D. cause the blood calcium to increase
E. stimulate cells to metabolize faster
Answer: E
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Plants are able to defend themselves against viruses that have invaded their cells by:
A. producing antibodies. B. recognizing and interrupting viral RNA replication. C. causing the virus to detach from the cell membrane before it injects its RNA. D. producing sticky proteins on the cell surface that capture the viruses. E. increasing the number of plasmodesmata per cell.
Rockweed have eliminated the ____ life stage
a. sporophyte b. carpospore c. gametophyte d. zygote e. tetrasporophyte
Identify several ways in which the study of hemoglobin variants led to an understanding of the molecular relationship
among genes, proteins, and human disease. What will be an ideal response?
A DNA molecule used to carry a foreign gene into a host organism is called a ________.
A. vector B. probe C. blot D. plasmid