Which of the following describes a function of the cell wall in prokaryotic cells?
a. preventing osmotic lysis
b. facilitating mitosis
c. ensuring sufficient nutrient flow
d. protecting the hydrothermal vent
a. preventing osmotic lysis
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The sound of the waves is detected by
A. mechanoreceptors. B. thermoreceptors. C. photoreceptors. D. proprioceptors. E. chemoreceptors.
Many instances involving genetically modified organisms, especially food crops, will be entering the human food chain in the years to come. On what basis are genetically modified foods considered safe to eat?
A) Because of the possible economic impact of rigorous testing, such food products are minimally tested in sheep and cattle. B) All products to be cleared for human consumption have been personally tested by all members of the regulatory agency. C) They are only slightly toxic. D) Genetically modified food products are considered safe if they are found to be not toxic or allergenic or have other negative physiological effects. E) Each genetically modified food product is screened for its resistance to antibiotics.
Which connective tissue has a liquid matrix?
A) cartilage B) blood C) adipose tissue D) fibrous connective tissue
What is the metabolic abnormality that underlies the characteristic symptoms of diabetes mellitus, such as frequent urination?
A) a failure of the kidney tubules to reabsorb enough glucose from the urine B) a failure of the gastrointestinal epithelium to absorb enough glucose from food C) an inability of the body's cells to retain glucose they have absorbed from the blood D) an inability of the body's cells to absorb enough glucose from the blood