When individuals have mitochondrial disorders, why are the skeletal and heart muscles and the brain
most often affected?
a. They are the most important organs.
b. They have the highest energy needs.
c. They are generally very fragile.
d. They have fewer mitochondria in the cell.
e. They are the most complex organs.
B
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How many hydrogen bonds form between adenine and thymine?
a. 1 b. 3 c. 2 d. 0
How many different codons in our genetic code specify amino acids?
a. 3 b. 20 c. 60 d. 61 e. 64
What is the term used to describe relatively small areas with unusually high concentrations of species found there and nowhere else, including many species in high risk of extinction? These areas receive the focus of global conservation efforts
A) Natural wildlife reserve B) Biodiversity hot spot C) Protective wilderness refuge D) Protective conservation zone
When an amino acid is converted to a keto acid, it
A. gains nitrogen. B. becomes a fatty acid. C. loses nitrogen. D. becomes a pyruvic acid.