Amino acid sequences of the heme protein ____________have been studied in order to determine common ancestry.

a. cytochrome a
b. cytochrome c
c. hemoglobin
d. hemoglobin A1c


Answer: b. cytochrome c

Biology & Microbiology

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One possible use of transgenic plants is in the production of human proteins, such as vaccines. Which of the following is a possible hindrance that must be overcome?

A) prevention of transmission of plant allergens to the vaccine recipients B) prevention of vaccine-containing plants being consumed by insects C) use of plant cells to translate non-plant-derived mRNA D) inability of the human digestive system to accept plant-derived protein

Biology & Microbiology

At desmosomes, cadherin molecules are connected to ________________

(a) actin filaments. (b) intermediate filaments. (c) microtubules. (d) gap junctions.

Biology & Microbiology

In determining the structure of ribozymes, why was it important that ribozyme sequences could be transcribed in vitro?

What will be an ideal response?

Biology & Microbiology

Growth of most Haemophilus species in culture is enhanced by:

a. incubation at 33°C to 35°C. b. high humidity. c. 5% to 10% carbon dioxide (CO2). d. enriched special media.

Biology & Microbiology