Oral rehydration solutions that contain both salt and glucose are highly effective in treating severe dehydration caused by diarrhea and vomiting. However, glucose or salt alone are not effective. Why?
A. Sodium transport and glucose transport are coupled in the small intestine so that glucose accelerates absorption of salt and water.
B. Water alone rushes through the digestive tract too quickly to be absorbed by the body tissues.
C. ATP is required to transport sodium unless glucose is available for cotransport.
D. Glucose without sodium is broken down too quickly in the mouth by saliva.
A. Sodium transport and glucose transport are coupled in the small intestine so that glucose accelerates absorption of salt and water.
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a. Renal pelvis b. Ureter c. Urethra d. Kidney e. Renal capsule
____ patrol the blood and develop into phagocytic ____ that patrol tissues and interstitial fluid
a. Macrophages; neutrophils b. Neutrophils; macrophages c. Dendritic cells; macrophages d. Monocytes; macrophages e. Monocytes; dendritic cells
There are no glands in the mucous membrane that lines the
a. digestive system. b. respiratory system. c. reproductive system. d. intestinal system. e. urinary system
Crossing over usually contributes to genetic variation by exchanging chromosomal segments between
A) sister chromatids of a chromosome. B) chromatids of nonhomologues. C) nonsister chromatids of homologues. D) nonhomologous loci of the genome. E) autosomes and sex chromosome