The placenta is normally located in the
A. ovary.
B. fallopian tube.
C. uterus.
D. abdominal cavity.
C. uterus.
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The point at which DNA synthesis is initiated is called the:
A. origin of replication. B. primer. C. primase. D. start codon. E. replication fork.
In the process of blood clotting, which of the
following do platelets do?
a. engulf and digest cellular debris b. release substances that repel more platelets c. convert fibrin into fibrinogen d. clump together e. platelets do all of these
_____ are substances that give up hydrogen ions when they dissolve in water, so these substances can lower the pH of a solution and make it acidic (below pH 7)
1.Elements 2.Bases 3.Acids 4.Solvents
Which is not a component of nucleic acids?
A. sulfur B. pentose sugar C. organic nitrogenous base D. phosphate