You observe a tissue with one free surface with several layers of cells attached to a basal lamina. This
is an example of
a. connective tissue.
b. epithelial tissue.
c. muscle tissue.
d. nervous tissue.
e. connective and muscle tissue.
B
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How is a T-cell receptor different from a B-cell receptor?
A. T-cell receptors must have antigen broken down inside a cell and presented to them by a Major Histocompatibility Complex (MHC) molecule. B. B-cell receptors must have antigen broken down inside a cell and presented to them by a Major Histocompatibility Complex (MHC) molecule. C. T-cell receptors are composed of 4 protein chains (pieces), while B-cell receptors are composed of only 2 pieces. D. T-cell receptors are eventually secreted into the bloodstream by activated T-cells, whereas B-cell receptors are not; they always stay with the B-cell.
In ________, people with a serious genetic disorder are not permitted to have children.
A) the United States B) England C) China D) Russia
The main hypothesis about the origin of the first living organisms is called ________
A) chemo-evolution B) novel design C) biogenesis D) cytosynthesis
Using the correct base pairing rules for DNA replication, what would be the complementary strand for the strand TACCGATGC?
TACCGATGC? ATGGCTACG TACCGATGC GCTAGTCGA TTCCGTTCG none of the answer choices are correct