5.5 Explain the significance of the lignin present on the walls of tissue B. (2)

Proponents of operant conditioning endorse the following conceptualization of behavior: S : R à C. What does the “C” stand for?

4. The passage describes atmospheric pollution by gases. Use the following word bank to fill in the blanks:   toxic unconscious blood haemoglobin carbon monoxide acid fossil oxygen   The release of carbon dioxide comes from the burning of [1] fuels in power stations and in cars and other vehicles. This burning also releases sulfur dioxide and nitrogen dioxide which dissolves in water in clouds to produce [2] rain. If the combustion of these fuels is not complete another gas called [3] is also released. This gas is very toxic and can combine with [4] in the blood. This prevents the delivery of oxygen around the body. Carbon monoxide causes drowsiness and affected people may fall [5] or even die. Carbon dioxide may also contribute to the increase in air temperature referred to as global warming. Gases that contribute to this are known as greenhouse gases.   (5)

1.2 Which of these is an example of an abiotic factor? (1)       A) Predators   B) Animals   C) Temperature   D) Plants  

According to the _____ hypothesis of hunger, appetite rises and falls in response to changes in plasma glucose.

TOTAL QUESTION 6: [10]

If a musician who enjoys playing music “for fun” begins to receive money for playing music at weddings week after week, what is most likely to happen to his or her intrinsic and extrinsic motivations to play music in the future?

Calculate the current yield for a $10,000 Treasury bond with a coupon rate of 5% that has a market value of $8500.

9.1 Draw a free-body diagram to represent the Mach-5 as it brakes on the straight road. Include all the forces that act on the Mach-5. (4)

QUESTION 8