Which molecule is not able to be absorbed across the stomach wall?

A. Aspirin
B. Water
C. Alcohol
D. Glucose


Answer: D

Biology & Microbiology

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Four of the five structures listed below are

associated with membranes. Select the exception. a. endoplasmic reticulum b. granum c. plasma membrane d. chromosome e. nuclear envelope

Biology & Microbiology

Which of the following occurs in all species of living organisms and may lead to an increase in genetic variation?

(A) Mutations in the genome (B) Crossing-over in meiosis (C) Random assortment of chromosomes (D) Alternative splicing of mRNA

Biology & Microbiology

Achondroplasia, a hereditary form of dwarfism, is an autosomal dominant disorder; however homozygous dominant

individuals either die before birth or very shortly thereafter. The homozygous recessive condition is normal. A dwarf couple decide to have children. Use this information to answer the following question:Of the children of this couple who survive, what is the probability that they will be normal?

a. 0 b. ¼ c. 1/3 d. 2/3 e. ½

Biology & Microbiology

Which term most precisely describes the cellular process of breaking down large molecules into smaller ones?

A. catalysis B. metabolism C. anabolism D. dehydration E. catabolism

Biology & Microbiology