Explain the relationship between the terms virus particle, virion, and virus genome
What will be an ideal response?
Answer: A virus particle is a broad term used to describe a virus at any stage of infection, whereas a virion is one single virus particle that is at an infectious state. They are metabolically inert in both cases and minimally contain a DNA- or RNA-based genome and a protein capsid layer. A viral genome is packaged within both a virion, containing a single or double stranded nucleotide sequence that serves as a template to produce viral transcripts and ultimately their proteins.
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Answer the following statements true (T) or false (F)
1. The covalent bonds that hold monosaccharides together in a polysaccharide are called glycosidic bonds. 2. A DNA nucleotide consists of the following three parts: a nitrogenous base, ribose, and a phosphate group. 3. The waxes in the cell walls of Mycobacterium tuberculosis cause this organism to be acid-fast. 4. The basic structure of a cell membrane is a lipid bilayer. 5. DNA polymerase is the only enzyme required for DNA replication.
How do environmental conditions determine the type of symbiosis that can occur between two organisms? Use the Hydra-Chlorella (algae) system as an example.
What will be an ideal response?
Both the founder effect and the bottleneck effect are mechanisms that produce large allele frequency sampling errors in a small population due to __________
A) random mutation B) gene flow C) gene drift D) lethal alleles E) random mating
In the plant alternation of generations life cycle, the two multicellular stages are the ________.
a) gametophyte and gamete b) gametophyte and sporophyte c) spore and gamete d) sporophyte and spore