A solution with a pH of 3 is called a(n) ____.

A solution with a pH of 3 is called a(n) ____.
 a. acid
 
  b. base
 
  c. ion
 
  d. solute

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(Question 2) he type of transport that requires energy input is called ____.
 a. passive transport
  b. diffusion
 
  c. osmosis
 
  d. active transport

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(Question 3) A red blood cell that is placed in a hypotonic solution will ____.
 a. shrink
 
  b. not change
  c. swell
 
  d. crenulate

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(Question 4) When the solute concentration outside a red blood cell equals the solute concentration inside the cell, the solution is called ____.
 a. hypotonic
  b. osmotic
 
  c. hypertonic
  d. isotonic

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(Question 5) The covalent bonds that are formed between different amino acids to form a protein are known as ____.
 a. peptide bonds
 
  b. ionic bonds
 
  c. hydrogen bonds
 
  d. electrolyte bonds

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(Question 6) A(n) ____ molecule is a double-stranded helical chain made up of nucleotides.
 a. ATP
 
  b. RNA
 
  c. DNA
  d. lipid

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(Question 7) Which nucleotide is found in RNA but not in DNA?
 a. guanine
  b. adenine
  c. thymine
  d. uracil

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(Question 8) Protein catalysts in the body that increase the rate of chemical reactions are called ____.
 a. amino acids
  b. enzymes
 
  c. atoms
 
  d. nucleotides

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(Question 9) The basic building blocks of proteins are ____.
 a. triglycerides
 
  b. monosaccharides
  c. amino acids
 
  d. nucleotides

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(Question 10) Starch, glycogen, and cellulose are all examples of ____.
 a. carbohydrates
  b. lipids
 
  c. proteins
 
  d. nucleotides