True or false: Because water is so abundant on Earth, oxygen and hydrogen make up a majority of the known matter of the universe

A. true B. false


Answer: B

Biology & Microbiology

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Extracellular fluid includes

(a) interstitial fluid. (b) plasma. (c) intracellular fluid. (d) both a and b.

Biology & Microbiology

Eyelash length is an inherited trait. In the human population, there is an eyelash length gene. There are two possible variants of this gene - an allele for long eyelashes (> 1cm) and an allele for short eyelashes (1 cm or less). How many eyelash length alleles does an individual have in one of her/his somatic cells?

A. 46 B. 23 C. 2 D. 3 E. 1

Biology & Microbiology

In an antibody-mediated immune response,

what do cytokines induce?

a. mitosis b. meiosis c. DNA replication d. protein synthesis e. gene splicing

Biology & Microbiology

The concentration of H+ ions inside the mitochondrial matrix is lower than it is in the cytosol or the mitochondrial intermembrane space

What would be the immediate effect of a membrane-permeable compound that carries and releases protons into the mitochondrial matrix? (a) inhibition of the electron-transport chain (b) inhibition of ATP synthesis (c) increased import of ADP into the matrix (d) inhibition of the citric acid cycle

Biology & Microbiology