Midterm review

What is the difference between aerobic and anaerobic environments?

• Anaerobic uses oxygen and aerobic does not
• Aerobic and anaerobic environments both use oxygen
• Aerobic uses oxygen and anaerobic does not
• Aerobic and anaerobic both do not use oxygen

What is responsible for making a protein?

• The sequence of the phosphate-sugar backbone.
• The sequence of lipids.
• The sequence of nitrogenous bases.
• The sequence of carbohydrates.

Which of the following describes transcription?

• tRNA is made from a DNA template.
• tRNA is made in the ribosome.
• mRNA is made in the ribosome.
• mRNA is made from a DNA template.

Which of the following is NOT a difference between a plant and animal cell?

• Plant cells have chloroplasts, animal cells do not.
• Animal cells are round, plant cells are square.
• Animal cells are square, plant cells are round.
• Plant cells have a cell wall and large central vacuole.

Which of the following is NOT a difference between DNA and RNA?

• DNA is double-stranded, RNA is single-stranded.
• DNA contains the sugar deoxyribose, RNA contains the sugar ribose.
• DNA contains uracil, RNA contains thymine.
• DNA contains thymine, RNA contains uracil.

What is the difference between passive and active transport?

• Active transport does not require energy.
• Passive transport does require energy.
• Passive transport does not require ATP energy, but active transport does.
• Active transport does not require ATP energy, but passive transport does.

Facilitated diffusion allows large molecules to pass through the cell membrane with the help of protein channels, but does not require energy. It is a ________ process.

• Passive
• Active
• ATP
• Protein

What is the purpose of DNA replication?

• To copy DNA
• To copy RNA
• To use DNA to make mRNA
• To use DNA to make tRNA.

Which organelle provides your body the energy it needs to function?

• Chloroplast
• Lysosome
• Mitochondria
• Golgi apparatus

If 10% of a DNA sample is made up of cytosine, what percentage is made up of thymine?

• 10%
• 20%
• 30%
• 40%