SET Biotechnology Practice Test 7

Biology Quiz

61. Which complex in the electron transport chain is responsible for pumping the most protons across the inner mitochondrial membrane?

A) Complex I- NADH dehydrogenase B) Complex II-Succinate dehydrogenase C) Complex III- Cytochrome b-c1 complex D) Complex IV- Cytochrome oxidase

62. The primary advantage of using creatine phosphate as an energy source during high intensity exercise is:

A) Slow energy release B) Rapid energy release C) Increased endurance D) Enhanced recovery

63. The half-life of a radioisotope is:

A) Half the time taken for complete decay B) Half the time taken for half the decay C) Time taken for complete decay D) Time taken for half the decay

64. The exact function of matrix in MALDI-TOF is to:

A) Ionize the sample B) Separate ions based on mass-to-charge ratio C) Detect ions and generate a mass spectrum D) Absorb excess laser energy and facilitate sample ionization

65. The process of adjusting the FACS instrument to optimise separation of cells is termed:

A) Calibration B) Gating C) Optimisation D) Compensation

66. In gas chromatography, what would be the effect of increasing the temperature of the column?

A) Increased resolution B) Decreased retention time C) Decreased separation rate D) Decreased sensitivity

67. A pharmaceutical company needs to formulate a liposomal drug delivery system. Which centrifugation method will they adopt to determine the size of liposomes?

A) Differential centrifugation B) Density gradient centrifugation C) Dynamic light scattering D) Ultracentrifugation

68. Name the radio isotope commonly used for cancer treatment due to its high energy emission:

A) Iodine-131 B) Technetium-99m C) Cobalt-60 D) Radium-223

69. The Meselson and Stahl experiment in 1958 utilized:

A) Radioactive labelling and sucrose gradient centrifugation B) N15 labelling and CsCl2 density gradient centrifugation C) DNA sequencing and reading D) X ray crystallography and molecular modelling

70. Which of the following is a characteristic of an inducible operon?

A) Constant expression regardless of environmental conditions B) Expression is triggered by a specific inducer molecule C) Expression is repressed by a specific repressor molecule D) Expression is controlled by a two-component system

Quiz Results

You scored: out of 10