Miller's apparatus synthesized
A. ammonia.
B. amino acids.
C. carbon dioxide.
D. DNA.
B. amino acids.
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In a normal cell, cell death typically occurs in which phase of the cell cycle?
A) G1 B) S C) G2 D) M E) all of the above
Below is a pedigree of a human genetic disease in which solid color indicates affected individuals. Assume that the disease is caused by a gene that can have the alleles A or a. What is/are the possible genotype(s) of person 2?
A) AA
B) Aa
C) Either AA or Aa
D) aa
E) Cannot be determined
Food poisoning from Salmonella occurs because of ________
A) an exotoxin secreted by Salmonella bacteria B) an endotoxin produced by Salmonella bacteria C) easy transmission between people living in close contact D) extremophile conditions
In humans, the central nervous system consists of the ________, which is housed in the ________ and the ________, which is housed in the ________.
A. brain; vertebral column; spinal cord; skull B. brain; skull; spinal cord; vertebral column C. spinal cord; vertebral column; sensory neurons; limbs D. peripheral nervous system; limbs; brain; skull