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14.5. Temperature control
A subsection of Biology, 5090, through 14. Coordination and control
Listing 10 of 92 questions
Table 2.1 shows some of the major constituents in a person’s sweat on a warm day (in micrograms per 100 cm3). Table 2.1 nitrogenous compounds (including urea, amino acids and broken-down hormones) glucose sodium chloride 31.5 2.5 3.5 State and explain the effects of sweating on the urine produced during a hotter day. To prevent sweating, some people use a spray that blocks the sweat ducts. Explain why it is important to use an antiperspirant only on those parts of the body, such as under the arms, that produce the most sweat. People who sweat a lot and do not wash regularly may suffer from body odour. Suggest why the regular use of an antibacterial soap is better than an antiperspirant spray for controlling body odour.
5090_s10_qp_21
THEORY
2010
Paper 2, Variant 1
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shows some structures in a section through human skin. C D The body is able to maintain its internal environment within narrow limits. State the term for this process. Structures C and D, in , are involved in the process of temperature regulation. Identify structures C and D and state the part they play in the process. C part played D part played The consumption of alcohol causes the muscles in artery walls to relax. Taking this into consideration, suggest why people who work in environmental temperatures below 5 °C might be advised not to drink alcohol before or during work.
5090_s10_qp_22
THEORY
2010
Paper 2, Variant 2
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Questions Discovered
92