Which of these is the correct sequence from simple to more complex?
A) Carbon, nitrogenous base, nucleotide, DNA, chromatin
B) Carbon, nucleotide, nitrogenous base, chromatin, DNA
C) Chromatin, carbon, nucleotide, nitrogenous base, DNA
D) Carbon, nitrogenous base, nucleotide, chromatin, DNA
E) Chromatin, DNA, nucleotide, nitrogenous base, carbon
A
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A transplant recipient rejects a transplanted organ because her ________ does not match that of the donor closely enough.
A. cytokine profile B. mononuclear phagocytic system C. major histocompatibility complex D. antibody response
Nucleic acids are composed of building blocks called amino acids
Indicate whether the statement is true or false
The allele for cleft chin (C) is dominant to the allele for uncleft chin (c). A male and female who are both heterozygous for cleft chin have a child. What is the chance that this child will have an uncleft chin?
A) 100% B) 75% C) 25% D) 50% E) 0%
There are five basic taste sensations. Select the one mismatched with its stimulating agent.
A. Salty; metal ions such as potassium or sodium B. Sweet; organic compounds such as sugar C. Umami; amino acids such as glutamate or aspartate found in chicken soup D. Sour; hydrogen ions from acids such as those in lemons E. Bitter; acids such as those in toxins or poisons