Meiosis involves four nuclear divisions.
Answer the following statement true (T) or false (F)
False
Meiosis involves two nuclear divisions.
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Which of the following events takes place in the electron transport chain?
A) the breakdown of glucose into two pyruvate molecules B) the breakdown of an acetyl group to carbon dioxide C) the extraction of energy from high-energy electrons remaining from glycolysis and the citric acid cycle D) substrate-level phosphorylation
Crick and his colleagues proposed that the genetic code consists of a series of blocks of information, called ______, each corresponding to one amino acid in an encoded protein.
A. alleles B. codons C. genes D. polypeptides
In the shallow subsurface, surface waters often move through ________, which are porous geological structures below the plant root zone.
Fill in the blank(s) with the appropriate word(s).
To make sure they treat the infection with the correct drug, doctors order DNA fingerprinting of a sample of bacteria taken from the patient for comparison to known fingerprints of strains A, B, and C. With which antibiotic should the patient be treated?
A patient is admitted to the hospital with a mysterious infection. After running some standard tests, doctors believe that the infection is caused by one of three closely—related bacterial strains — A, B, or C — that are hard to treat because they have become resistant to some antibiotics.
Strain A is resistant to antibiotic beta and antibiotic omega
Strain B is resistant to antibiotic alpha and antibiotic omega
Strain C is resistant to antibiotic alpha and antibiotic beta
A. antibiotic alpha.
B. antibiotic beta.
C. antibiotic omega.
D. antibiotic beta or antibiotic omega.
E. any antibiotic will work to kill the bacteria causing the infection.