Hemoglobin transports oxygen in the blood and consists of a chain of 146 amino acids. How many different types of amino acids are used to construct proteins?
A. 2
B. 20
C. 146
D. 200
B
Biology & Microbiology
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The figure above represents tRNA that recognizes and binds a particular amino acid (in this instance, phenylalanine). Which codon on the mRNA strand codes for this amino acid?
A) UGG B) GUG C) GUA D) UUC E) CAU
Biology & Microbiology
Which is not a cell or fiber type found in loose connective tissues?
A. Chondrocytes B. Macrophages C. Adipose cells D. Mast cells E. Collagen fibers
Biology & Microbiology
Which muscle provides protection to the abdominal organs?
Biology & Microbiology
What is the hallmark of all horizontal gene transfers?
1) Transfer of DNA between organisms of the same generation 2) Transfer of DNA using a virus 3) The use of plasmids 4) Transfer of DNA from parent to offspring
Biology & Microbiology