Blood in the veins looks purplish because ____
a. it contains less oxygen than arterial blood
b. most of the oxygen is dissolved in the plasma
c. less oxygen is in the plasma compared to bound to hemoglobin
d. it contains less carbon dioxide
e. veins run deeper than arteries
ANSWER: a
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Normal white blood cells (called B cells) and cancerous B cells that cause leukemia both carry a unique surface protein called CD-19
a. True b. False Indicate whether the statement is true or false
Mendel inferred the genetic basis of ____, such as flower color in peas, by crossing plants with different phenotypes
a. adaptive traits b. allele shuffling c. allelic recombination d. quantitative traits e. qualitative traits
Which of the following is most correct regarding genes, DNA, and protein?
A) A gene is a section of DNA whose sequence encodes a particular protein, which is composed of amino acids. B) A gene is a section of a chromosomal DNA composed of many amino acids. C) DNA is composed of many genes, which are formed from amino acid sequences. D) DNA is composed of amino acids, which encode the protein and genotype.
The mRNA strand includes both introns and exons.
Answer the following statement true (T) or false (F)