Which of the following are within the range of most radiation reaching the surface of Earth?

a. near-infrared and infrared radiation
b. infrared radiation and microwaves
c. ultraviolet and near-infrared radiation
d. ultraviolet radiation and X-rays


Ans: c. ultraviolet and near-infrared radiation

Biology & Microbiology

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Much of the work of breaking down the food we ingest is done by our:

(a) stomach (b) teeth (c) gut microbiome (d) esophagus

Biology & Microbiology

A chemical is reported to inhibit bacterial replication. Bacterial cells are placed in medium with all nutrients necessary for replication. The chemical is added to the culture, and after a half hour an extract of the DNA is prepared. A significant percentage of the DNA is in pieces about 1000 to 2000 bases in length. The results are consistent with the chemical blocking the function of DNA ligase.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Which of these structures is NOT formed during gastrulation?

a. Blastocoel b. Archenteron c. Endoderm d. Mesoderm e. Ectoderm

Biology & Microbiology

Please match the viral diagnostic method to its description. Used to cultivate viruses and observe cytopathic effects on host cells

A) PCR B) Immunological testing C) Electron microscopy D) Cell and tissue culture techniques E) Observation of the patient

Biology & Microbiology