Biology Quiz

Basic solutions have a pH below 7, while acidic solutions have a pH above 7

• TRUE

• FALSE

Which of the classes of RNA molecules is linked with proteins in forming the large and small subunits of a cytoplasmic structure?

• ribosomal RNA

• transfer RNA

• messenger RNA

• mRNA transcript

The pressure required to stop water from moving across the membrane by osmosis is called

• transport pressure

• crenation pressure

• atmospheric pressure

• osmotic pressure

Which one of the following is considered a biological macromolecule?

• Proteins

• lipids

• carbohydrates

• all of the above

The final electron acceptor in aerobic respiration is

• Water

• NADPH

• ATP

• Oxygen

Which enzyme catalyzes the elongation of a DNA strand in the 5' ? 3' direction?

• primase

• DNA ligase

• DNA polymerase III

• helicase

Single base pair mutation often cause a minimal problems.

• TRUE

• FALSE

If oxygen is absent during the second stage of cellular respiration,

• fermentation will occur.

• the Krebs cycle begins.

• the electron transport chain works more efficiently.

• glycolysis stops

Choose the pair of terms that correctly completes this sentence: Catabolism is to anabolism as-- is to--.

• exergonic; spontaneous

• exergonic; endergonic

• free energy; entropy

• work; energy

Codons are

• triplets coding for a single amino acid.

• the alphabet of the genetic language

• redundant in their coding for various amino acids

• all of the previous