When producing a karyotype, the pairs of chromosomes ____
a. are arranged largest to smallest
b. are arranged in alphabetical order
c. are arranged with the X and Y first
d. are aligned horizontally by their centromeres
e. are arranged randomly
ANSWER: d
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True or false: Amino acids can be spontaneously generated in vitro, but only under anaerobic conditions
A. true B. false
The ________ experiments use an initial exposure to a radioactive compound in the mRNA followed by monitoring of the radioactive compound to determine its fate in the cell.
Fill in the blank(s) with the appropriate word(s).
Step 2 in the accompanying figure is accomplished by an influx of:
a. Ca2+
b. Na2+
c. K+
d. Na2+
e. K+
Which of the following diseases make up chronic obstructive pulmonary disease (COPD)?
Select one: a. emphysema, chronic bronchitis, and asthma b. emphysema, tuberculosis, and cystic fibrosis c. chronic bronchitis, tuberculosis, and pulmonary fibrosis d. tuberculosis, cystic fibrosis, and asthma e. pulmonary fibrosis, asthma, and cystic fibrosis