What is a gap junction? Choose the correct option
A) Synapse between a neuron and a muscle cell
B) Electrical synapse
C) Synapse between a neuron and a glandular cell
D) Chemical synapse
Ans: B
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What is the lean body mass of a man whose weight is 164 lbs and body fat is 22%?
1. 128 lbs 2. 182 lbs 3. 218 lbs 4. 281 lbs
Which of the following does not describe B-cell receptors?
a. B-cell receptors are membrane-bound and secreted. b. B-cell receptors consist of a variable region and a constant region. c. B-cell receptors lack specificity and can bind to a number of different antigens. d. B-cell receptors possess specificity and can therefore bind only to unique epitopes. e. B cell receptors undergo affinity maturation as a consequence of somatic hypermutation.
Menopause marks the end of the childbearing years
Indicate whether the statement is true or false
Combining estrogen and progesterone may increase the risk of cancer
Indicate whether the statement is true or false