Hormonal methods of contraception work by:
Demersals are fish that are found:
Some plants reproduce by forming bulbs. The new plants that grow from the bulbs will be genetically identical
When we are too hot, more blood flows through the capillaries near the surface of the skin. This helps us to cool down because the blood loses heat by:
The point where two neurones connect is called:
Photosynthesis is important because:
The density of pure water is:
Excretion is best defined as:
Many leaves are adapted to photosynthesise effectively by having:
When testing a leaf for the presence of starch, the correct sequence of procedures is:
Measuring plant growth by measuring height is convenient, but inaccurate because:
Veins have valves because
Three factors that increase the risk of coronary heart disease are:
Which of the following are all secondary sex characteristics in females?
Which one of the following best describes hormones?
Atherosclerosis is a process in which:
Compared to industrialised countries, developing countries:
Urea is made from surplus proteins in:
Which one of the following is correct. When we digest our food:
Breathing in fish involves which two processes?
Which of the following properties of water is not important to the survival of living things?
We lose water mainly in:
All gas exchange surfaces in vertebrate animals have:
The wall of the heart is made of:
Why is testing a leaf for starch a reliable indication that photosynthesis has taken place?
The particles in a liquid:
Which of the following can cross the placenta from mother to fetus?
During adolescence, boys:
The density of seawater is:
Which of the following are all deficiency diseases?
When something gets hotter, the particles in it gain more:
When we sweat, we lose heat because:
We do not see an object if rays of light from it are focussed on the blind spot because:
Which of the following nutrients is/are digested in the stomach?
Absolute zero is:
Which of the following tests describes the test for glucose?
When focussing on distant objects:
A person of blood group AB has:
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