Cellular Metabolism
Questions covering cellular metabolic processes including glycolysis, enzyme function, protein metabolism, and basic cell division concepts
Questions
DNA replication occurs during __________.
- S period
- G1 period
- G2 period
- M phase
- G0 period
A nucleolus originates from a:
- Lysosome
- Golgi complex
- Endoplasmic reticulum
- Chromosome
- Mitochondria
Which of the following is known as the sum of constructive processes in body cells?
- Catabolism
- Anabolism
- Translocation
- BMR
- Metabolism
Which of these is not an attribute of an enzyme?
- They are proteinaceous.
- They accelerate biochemical reactions.
- They are used up in the reaction.
- They are specific in nature.
- Sometimes RNA is also involved as enzymes.
Amino groups of surplus amino acids are turned into urea, where is this urea synthesized/
- Pancreas
- Spleen
- Kidneys
- Liver
- Red blood cells
A cell increases in volume if external medium is ___________.
- isotonic
- hypertonic
- hypotonic
- slightly hypertonic
- no matter whether the medium is hypertonic or hypotonic
Metabolic rate can be increased by giving injections of :
- Testosterone
- Thyroxine
- GH
- All of these
- Aldosterone
First stage in utilization of glucose for energy concludes in the formation of, or the link between glycolysis and Kreb's cycle is ____________.
- pyruvic acid
- acetyl Co A
- oaloacetic acid
- fumaric acid
- malic acid
Which of the options best defines, a coenzyme?
- Fat attached with enzyme.
- Carbohydrate that controls enzymatic activity.
- A nucleic acid.
- An inorganic compound.
- A vitamin that acts with an enzyme.
First reaction in glycolysis is catalyzed by which of the following?
- Lactate dehydrogenase
- Aldolase
- Hexokinase
- Phosphofructokinase
- Pyruvate kinase
r RNA is formed by __________.
- DNA
- ATP
- t RNA
- Gene
- Nucleolus
Because most of the amino acids are represented by more than one codon the genetic code is said to be _________.
- wobbling
- degeneracy
- non-overlapping
- unamiguous
- non degenerate
At which stage, in a cell, the decision for division occurs?
- G1 period.
- S period.
- G2 phase.
- Before prophase.
- M phase.
Which is the common phase in aerobic and anaerobic respiration?
- Tricarboxylic acid cycle
- Oxidative phosphorylation
- Glycolysis
- Kreb's cycle
- Electron transport chain
Our body can use proteins also as energy source. To get energy from proteins its amino acids are deaminated in____________.
- liver
- lungs
- kidneys
- muscles
- spleen
When does the formation of fats begins in the body?
- Blood sugar level is constant.
- Glucose is converted into glycogen.
- Liver and muscles cannot store any more glycogen.
- Glucose combines with glycerol.
- Formation of fats occurs always in the body.
In protein synthesis polymerization of amino acids involves three steps. Which step is not involved in it?
- Elongation
- Transcription
- Initiation
- Termination
- Activation of amino acids
Pyruvic acid before combining with oxaloacetic acid of TCA cycle becomes _________.
- lactic acid
- aceto acetic acid
- cis aconitic acid
- acetyl coenzyme A
- aceto acetyl coenzyme A
A red blood cell kept in a solution for a few minutes happened to burst. What kind of solution was it?
- Hypertonic
- Hypotonic
- Concentrated salt solution
- Concentrated sugar solution
- Isotonic