Answer the following questions true (T) or false (F)
1. Normally, complement-activating immune complexes are eliminated from the body by phagocytosis.
2. Individuals with AB blood type are called "universal donors" because they do not have antibodies against blood group antigens.
3. MHC genes are significant genetic factors in predisposition to develop autoimmune disease.
1. TRUE
2. FALSE
3. TRUE
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When receptors coupled to phospholipase C are activated, calcium levels in the cytosol increase when ______
A. diacylglycerol binds to ligand-gated channels on the endoplasmic reticulum, releasing calcium. B. IP3 binds to ligand-gated channels on the plasma membrane, releasing calcium. C. diacylglycerol binds to ligand-gated channels on the plasma membrane, releasing calcium. D. IP3 binds to ligand-gated channels on the endoplasmic reticulum, releasing calcium. E. phospholipase C phosphorylates the receptor leading to calcium production.
Given what you now know, what information is most likely to produce the correct answer?
What will be an ideal response?
Specialized islet cells that secrete hormones are found scattered throughout the:
a. adrenal cortex b. liver c. thymus d. adrenal medulla e. pancreas
Which of the following must be true for a woman who is heterozygous for a given gene?
a. She must be heterozygous for all genes. b. All of her eggs will contain both of the alleles for that gene. c. All of her eggs will contain one allele or the other, but not both alleles. d. She carries a rare mutation.