The cytoplasmic membrane could best be described as
A) an impermeable barrier.
B) a passive conduit for intracellular transport.
C) a highly selective permeability barrier.
D) a rigid structure that protects the cell.
Answer: C
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Answer the following statements true (T) or false (F)
1. All infectious diseases are caused by microbes. 2. “Carbuncle” and “boil” are synonyms. 3. The most common causes of sinusitis are Staphylococcus aureus and Streptococcus pyogenes. 4. Most sore throats are caused by Streptococcus pyogenes. 5. “Bacteremia” and “septicemia” are synonyms.
In ________ countries, the doubling time is often small
Fill in the blank(s) with correct word
Root hairs are:a
flattened extensions of epidermal cells. b. formed once in the area of cell maturation. c. small in number. d. located in front of the root tip. e. short-lived
Cyanobacteria produce a cell type known as a (cyst/heterocyst/nodule) that protects nitrogenase from the exposure to oxygen.
Fill in the blank(s) with the appropriate word(s).