Figure 2-2 represents:
a. elemental helium.
b. molecular hydrogen.
c. molecular helium.
d. a water molecule.
e. molecular oxygen.
B
You might also like to view...
The right and left sternocleidomastoid muscles of humans originate on the upper surfaces of breast bone and collar bones, pass along both sides of the neck, and insert just behind the ears on the mastoid processes. Describe the action that occurs if both sides contract together.
What will be an ideal response?
All of the following pertain to cephalosporins, except
A. many are administered by injection, not orally. B. they have a beta-lactam ring. C. newer generations have activity against gram-negative bacteria. D. they have greater resistance to beta-lactamases. E. they are are synthetic drugs.
In a PCR, primers are complementary to stretches of DNA with which they anneal
Indicate whether the statement is true or false
You are a forensic technician working on a DNA sample obtained from a crime scene. Your job is to compare the unknown DNA sample with known DNA samples collected from five different suspects. Preliminary analysis using only a few DNA markers revealed that the unknown sample could possibly match two of the suspects. After consulting the case file, you find out that these two suspects are brothers (but not twins). You realize that you will have to do a more detailed analysis on the samples so that you can distinguish between the brothers and determine which brothers' DNA matches the unknown sample.Why can't you use mitochondrial DNA to distinguish between these two suspects?
A. There are no molecular techniques available that allow one to analyze mitochondrial DNA. B. The sequence of mitochondrial DNA has not yet been determined. C. The brothers share the same mitochondrial DNA. D. Because mitochondrial DNA is inherited in a paternal pattern.