In which process is energy required but not directly used to produce movements against concentration gradients?
a. osmosis
b. primary active transport
c. secondary active transport
d. simple diffusion
e. facilitated diffusion
C
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In DNA replication,
A) 23 copies are made of each chromosome. B) one new copy is made of each chromosome, and the original chromosome remains intact. C) two new copies are made of each chromosome, and the original chromosome is destroyed. D) two copies are made of each chromosome, and each copy contains one of the DNA strands from the original chromosome. E) the chromosome is copied to RNA, which is then copied to DNA for a new chromosome.
Hyperkalemia refers to an excess of what?
A) calcium B) chloride C) water d) potassium e) sodium
What is a sesamoid bone?
A. A bone growing within some cartilages in response to pressure B. A bone that forms in the cranium in response to trauma C. A bone that forms within some tendons in response to stress D. A bone made of hyaline cartilage E. A bone made of dense regular connective tissue
An infant is born with a genetic defect that greatly reduces his production of brown fat. Which of the following will most likely apply to this infant?
A. The infant will have difficulty regulating his body temperature. B. The infant will have difficulty absorbing nutrients at the small intestine. C. The infant will have difficulty breathing. D. The infant will have very stretchy tendons. E. The infant will have reduced bone mass.