An alternate form of a gene is called an:
All of the following have endoskeletons EXCEPT for:
In an ecosystem a population is:
Which one of the following is NOT a harmful effect of smoking?
In a food chain a plant is a producer because it produces:
Plants lose water through their leaves by the process of:
Vegetables like cauliflower, cabbage and broccoli have been bred from the original wild brassica plant by:
An enzyme which has an optimum pH of 3 will function best in the:
The length of an insect such as a grasshopper increases in steps.This is because:
Which of one the following statements about phloem cells is NOT true?
Which of the following does NOT play a role in evolutionary change?
Vaccination causes a person′s immune system to produce:
Which of the following statements about aerobic respiration is correct?
All of the following can affect the size of a population EXCEPT for:
Which of the following are natural barriers to infection?
Ⅲ stomach acid
Which one of the following diagrams illustrates short-sightedness?
(F = Focal point)
In a plant cell, turgor is caused by:
The part of the brain that processes information from the sense organs is the:
The white blood cells that produce antibodies are called:
Which one of the following is NOT a reflex action?
The following are all minerals EXCEPT for:
The following are all features of insect-pollinated flowers EXCEPT for:
Which one of the following is NOT an inherited disorder?
A relationship between two organisms where one organism derives benefits from the relationship and the other organism derives no benefit, but is not harmed, is called:
Which of the following routes taken by blood in the body is correct?
Which of the following are examples of environmental variation in humans?
Ⅰ hair colour
Ⅳ body mass
Crossing two brown mice produced an offspring with a black coat.Which of the following statements MUST be correct?
Ⅰ Brown coat is dominant to black.
Ⅱ The brown mice were heterozygous for coat colour.
Ⅲ The black mouse was homozygous for coat colour.
Ⅳ Crossing a black mouse with another black mouse could produce a brown offspring.
All of the following are possible consequences of global warming EXCEPT for:
Anaerobic respiration takes place:
The site of reabsorption of MOST of the water from the filtrate.
Which of the following conditions is NOT caused by a poor diet?
Which one of the following chemicals is used to test for starch?
The correct pathway of water through a plant is:
Which one of the following factors does NOT affect the rate of transpiration?
The main site of action of ADH (antidiuretic hormone).
Most plant and animal cells contain:
The aim of the experiment shown above was to find out if:
Enzymes are called biological catalysts because they:
Which one of the following is the best way to measure growth of an organism?
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