At what level of organization does life begin?
A. Reproductive organs
B. Cell
C. Molecule (water)
D. Molecule (DNA)
E. Population
Answer: B
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The step of DNA replication in which two replication forks moving in opposite directions may meet is called
A) initiation. B) elongation. C) termination. D) translation. E) translocation.
The principles of heredity were first established through breeding experiments carried out in ________ by Gregor Mendel
A) the late 1700s B) the 1950s C) the 1860s D) the early 1900s E) the mid-1600s
Compared to urine, the filtrate that first enters a nephron tubule
A) contains less water. B) contains red blood cells. C) has more salts. D) does not contain urea.
The cardiac muscle tissue is called the ________
A) pericardium B) coronary chamber C) endocardium D) myocardium