Staphylococcus bacteria are commonly present in the human nasal cavity but rarely cause disease of the upper respiratory system. This situation is an example of (commensalism/mutualism/parasitism).
Fill in the blank(s) with the appropriate word(s).
commensalism
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Which cells of the pancreas produce glucagon?
a. alpha cells b. beta cells c. delta cells d. F cells e. gamma cells
Which of the following compounds is not a source of electrons for anoxygenic photosynthesis?
A) SH- B) S2O32- C) H2O D) succinate E) All of the above are used.
In a humoral or antibody-mediated immune response, specific B cells are stimulated by Helper T cells to transform into plasma cells that secrete antibodies. What would be an important feature added to B cells In this transition process?
A) Duplication of specific gene sequences for the appropriate antibody. B) Increased rough endoplasmic reticulum in order to have the surface area needed for antibody production. C) Duplication of lysosomes in order to store the antibodies before transport.
What is the term for a change to the nucleotide sequence in the genome
What will be an ideal response?