Biology Super Starz

Which of the following terms are associated with all amino acids?

• zwitterion, hydrophobic, amphoteric

• zwitterion, amphoteric

• amphoteric, hydrophobic

• hydrophobic, amphipathic

• amphipathic, amphoteric

Actin has which of the following types of protein structure?

• membrane, fibrous, globular

• membrane, fibrous

• fibrous, globular

• globular, filamentous

• fibrous, filamentous

Amylose is to amylase as:

• lipid is to lipase; amino acids are to peptidyl transferase; glucose is to maltase

• lipid is to lipase; amino acids are to peptidyl transferase

• amino acids are to peptidyl transferase; glucose is to maltase

• glucose is to maltase; RNA is to restriction endonuclease

• amino acids are to peptidyl transferase; RNA is to restriction endonuclease

Which of these groups are associated with amino acids?

• R group; amino group; carboxylic acid group

• R group, amino group

• amino group; carboxylic acid group

• carboxylic acid group; aldehyde group

• amino group; aldehyde group

Which of the following bonds assist the stabilisation of tertiary structure?

• hydrogen bonds; disulphide bridges; hydrophobic interactions

• hydrogen bonds; disulphide bridges

• disulphide bridges; hydrophobic interactions

• hydrophobic interactions; ester bonds

• disulphide bridges; ester bonds

Which of the following are true about DNA replication?

• it occurs in Prokaryotes all of the time; in Eukaryotes it occurs in S phase of cell cycle; in Eukaryotes it occurs in G1 phase of cell cycle

• it occurs in Prokaryotes all of the time; in Eukaryotes it occurs in S phase of cell cycle

• it occurs in Prokaryotes all of the time; in Eukaryotes it occurs in G1 phase of cell cycle

• in Eukaryotes it occurs in G1 phase of cell cycle; it occurs in Eukaryotes all of the time

• it occurs in Prokaryotes all of the time; it occurs in Eukaryotes all of the time

In PCR why is Taq polymerase is used?

• It is the only polymerase that synthesises human DNA; It does not become denatured at high temperatures; It is the only DNA polymerase that has been synthesised

• It is the only polymerase that synthesises human DNA; It does not become denatured at high temperatures

• It does not become denatured at high temperatures; It is the only DNA polymerase that has been synthesised

• It is the only DNA polymerase that has been synthesised; It has a high optimal temperature

• It does not become denatured at high temperatures; It has a high optimal temperature

Which of the following statements about the variable groups on amino acids are correct?

• electrically charged side chains will only be found in the regions that interact with other molecules; Alanine is the simplest variable group; non polar side chain will form the hydrophobic regions

• electrically charged side chains will only be found in the regions that interact with other molecules; Alanine is the simplest variable group

• Alanine is the simplest variable group; non polar side chain will form the hydrophobic regions

• non polar side chain will form the hydrophobic regions; polar side chains will be located in the part that is water soluble

• Alanine is the simplest variable group; polar side chains will be located in the part that is water soluble

Which of these statements are true of DNA replication

• both strands are used as template, creating two mixed strands, one old and new; DNA helicase breaks bonds between the DNA strands; both strands are used as template, creating one new molecule and one old

• both strands are used as template, creating two mixed strands, one old and new; DNA helicase breaks bonds between the DNA strands

• DNA helicase breaks bonds between the DNA strands; both strands are used as template, creating one new molecule and one old

• both strands are used as template, creating one new molecule and one old; bits of DNA are copied throughout the helix, creating a patchwork of old and new DNA

• DNA helicase breaks bonds between the DNA strands; bits of DNA are copied throughout the helix, creating a patchwork of old and new DNA

Which of the following are enzymes involved in DNA replication?

• DNA ligase; DNA helicase; DNA polymerase

• DNA ligase; DNA helicase

• DNA helicase; DNA polymerase

• DNA polymerase; RNA polymerase

• DNA helicase; RNA polymerase