Which of the following supports growth in plants?
Correct answer A. Calvin cycle
Topic / 1,500 questions
Biology MCQs
Page 29 of Biology multiple-choice questions with answers. Tap an option to check yourself.
Page 29 of 75
A baby with blood group O+ cannot have a mother of which blood group?
Correct answer C. AB-
How many spiracles are found in the thorax of a cockroach?
Correct answer D. 4
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Which of the following diseases is contagious?
Correct answer D. Tuberculosis
How many spiracles does a cockroach have?
Correct answer D. 20
Which lung disease damages the inside of the lungs and causes coughing and fever?
Correct answer A. Pulmonary tuberculosis
The tar in tobacco smoke contains more than how many compounds involved in causing cancer?
Correct answer B. 10
Which molecule(s) can bind to the active site of the enzyme Rubisco?
Correct answer D. All of these
How much carbon dioxide is carried in every 100 ml of arterial blood?
Correct answer D. 50 ml
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What percentage of carbon dioxide is carried in the blood as carbaminohaemoglobin?
Correct answer D. 20%
What effect does a rise in blood pH have on the oxygen-carrying capacity of haemoglobin?
Correct answer C. Positive
The glycolate produced during photorespiration diffuses into which membrane-bound organelles?
Correct answer B. Peroxisomes
Up to what proportion of a leaf’s total volume can be made up of air spaces?
Correct answer A. 40%
Roughly how many stomata are found per square centimetre of leaf surface in tobacco plants?
Correct answer D. 12000
Which factors influence how readily haemoglobin combines with oxygen?
Correct answer D. All of these
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Roughly how many times more viscous than air is water?
Correct answer A. 50
What oxygen pressure, measured in mercury, is enough to almost fully oxygenate haemoglobin?
Correct answer C. 100 mm
Approximately how much oxygen is contained in one litre of air?
Correct answer C. 200 ml
At sea level, what is the maximum volume of oxygen that 100 ml of normal human blood can absorb and carry?
Correct answer D. 20 ml
Which of the following makes a better medium for respiration?
Correct answer C. Air