Year 12 Biology (AQA A Level)

Which of these would you not find in an animal cell?

• cell membrane
• cell wall
• nucleus
• ribosome

What term is used to describe a single celled organism without a true nucleus?

• prokaryote
• virus
• protoctista
• eukaryote

Where in a cell does respiration take place?

• ribosome
• nucleus
• mitochondria
• cytoplasm

What is the function of the ribosomes?

• respiration
• protein synthesis
• cell replication
• DNA replication

Maltose is a disaccharide and is made up of which two monosaccharides ...

• glucose + glucose

• glucose + fructose

• glucose + galactose

• fructose + sucrose

The bond between glucose molecules are called ...

• peptide

• ester

• glycosidic

• phosphodiester

• hydrogen

The bond between DNA bases are called ...

• peptide

• ester

• glycosidic

• phosphodiester

• hydrogen

Which statement describes how the molecular structure of starch is suited to its function?

• Amylose has a branched structure and amylopectin is coiled to give a compact molecule for transport.

• In the breakdown of amylose and amylopectin, many condensation reactions release stored energy.

• In the formation of amylose and amylopectin, many hydrolysis reactions allow the release of stored energy.

• The amylose-amylopectin complex is insoluble and does not affect the water potential of the cell.

According to Darwin’s theory of natural selection, the individuals that tend to survive are those that have

• characteristics their parents acquired by use and disuse.
• the greatest number of offspring.
• characteristics that plant and animal breeders value.
• variations best suited to the environment.

Natural selection and evolution work on what level of life organization?

• individuals
• biomes
• populations
• ecosystems