An example of a pathogen that undergoes rapid changes resulting in antigenic variation is _____
A) the influenza virus, which expresses alternative envelope proteins
B) the strep bacteria, which can be transmitted from patient to patient with high efficiency
C) human papilloma virus, which can remain latent for several years
D) the causative agent of the autoimmune disease known as rheumatoid arthritis
E) multiple sclerosis, which attacks the myelinated cells of the nervous system
Answer: A
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The main reason certain seeds germinate when brought to the soil surface, when the soil is disturbed, might be because:
A. They need additional oxygen. B. They are then more aware of their surroundings. C. They require light to germinate. D. They have water deprivation. E. They are sensitive to the cold temperatures of the soil.
The application called multiple strand displacement amplification is a powerful tool because ________.
A. it allows single-cell genomic sequencing that can analyze uncultivated microorganisms B. it provides data on the pathogenic nature of the microorganism C. it provides errorless sequencing results for that microorganism D. it identifies the transcriptome of the microorganism
Cyclodextrins are a group of compounds capable of removing cholesterol from membranes. The effect most likely to have a large impact on cells as a result of cyclodextrin treatment would be
A. increased membrane fluidity at higher temperatures. B. increased membrane fluidity at lower temperatures. C. disruption of transmembrane protein structure. D. increased permeability of the membrane. E. increased concentration of transmembrane proteins.
Most living organisms have an energy-supplying molecule known as ________.
What will be an ideal response?