Which organelle is a fluid-filled vesicle that breaks down amino acids, fatty acids and toxic substances?
a. Peroxisome
b. Golgi body
c. Vesicle
d. Lysosome
e. Endoplasmic reticulum
a
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Which hormones slow down stomach emptying?
a. gastrin and somatostatin b. somatostatin and secretin c. leptin and gastrin d. ghrelin and cholecystokinin e. secretin and cholecystokinin
Is it possible to correct for the effects of multiple crossovers in calculating map distances by applying a linear mapping function
Indicate whether the statement is true or false
Some enzymatic receptors and most G protein-coupled receptors transmit the signal into the cytoplasm by utilizing other substances within the cytoplasm that are referred to as:
A. second messengers. B. first messengers. C. intracellular receptors. D. genes.
Which of the following statements regarding carbon is false?
A) Carbon has a tendency to form covalent bonds. B) Carbon has the ability to bond with up to six other atoms. C) Carbon has the capacity to form single and double bonds. D) Carbon has the ability to bond together to form extensive branched or unbranched "carbon skeletons."