Why are telomeres important?
a. They keep track of the number of cell divisions that a cell undergoes.
b. They provide extra nucleotides when needed during replication.
c. They are needed for histone and DNA arrangement.
d. They provide a site of attachment for spindles in cell division.
e. They provide a buffer against the loss of more valuable DNA.
e
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During the lag phase of microbial growth, the cells are metabolically inactive.
Answer the following statement true (T) or false (F)
Which cranial nerve performs both sensory and motor functions?
a. olfactory b. oculomotor c. glossopharyngeal d. optic
During plant succession, animals can quickly lose their habitat by vegetation change
Indicate whether the statement is true or false
In order to be detected by a T cell, the class I major histocompatibility (MHC) molecule of infected cells must go through the process of
A) antigen presentation. B) complement activation. C) phagocytosis. D) antibody binding. E) perforin incorporation.