The most important receptors for steady touch are
a. Pacinian corpuscles.
b. Meissner's corpuscles.
c. Merkel's discs.
d. Ruffini endings.
e. free nerve ending.
C
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Genetic map units represent ____
a. absolute physical distances between genes b. locations of different alleles of a gene c. the chromosome on which a given gene is located d. the actual DNA sequence of a gene e. relative positions of genes with respect to one another
The following is a list of steps involved in the process of phagocytosis. Which of the following answers indicates these steps in the CORRECT order?
1. Lysosome fuses with the vesicle containing a foreign cell. 2. Wastes from the foreign cell are removed. 3. The foreign cell is surrounded by the cell membrane of the phagocyte. 4. Lysosomal enzymes break down the foreign cell. 5. The foreign cell is contained within a vesicle. A) 5, 3, 1, 4, 2 B) 3, 5, 2, 1, 4 C) 3, 5, 1, 4, 2 D) 2, 4, 1, 5, 3 E) 3, 1, 5, 4, 2
Lipid A is found only in Gram negative bacteria
a. true b. false
Reverse transcriptase synthesizes a DNA molecule from an RNA template
Indicate whether the statement is true or false