Date | November 2020 | Marks available | 5 | Reference code | 20N.3.HL:.tz0.12 |
Level | Higher Level | Paper | Paper 3 | Time zone | time zone 0 |
Command term | Discuss | Question number | 12 | Adapted from | N/A |
Question
Describe the physiological effects of excess alcohol on the body.
Biathlon is a winter sport that combines cross-country skiing and rifle shooting. Discuss the possible effects of alcohol on a biathlete’s performance.
Markscheme
Acute:
hydration and kidney function;
cardiovascular system;
thermoregulation;
neurologic systems;
dehydration caused by the effect of alcohol on the release of ADH / loss of coordination / reduced ability to concentrate;
reduced inhibitions «become more aggressive»;
markedly reduced heart rate, potentially leading to unconsciousness or coma;
cognitive impairment / slurred speech/vision impairment;
vasodilation to the skin;
decreased blood viscosity;
reduced core body temperature;
raised blood pressure;
Chronic:
liver damage including jaundice/cirrhosis/liver cancer/liver failure;
damage to the kidneys;
heart disease/cardiomyopathy;
alcohol-related brain damage/confusion/depression/forgetfulness;
chronic pancreatitis;
Positive effects:
reduced tremors;
Negative effects:
distorted balance/coordination;
impaired cardiac function;
reduced power/speed/strength;
inhibited cognitive processing/reaction time;
inhibition of gluconeogenesis;
lowers body temperature;
impairs vision/blurred vision and loss of control eye movement that impairs judgement;
causes dehydration which can impair performance;
Examiners report
Many students not reading "physiological effects" and answered generically.
Not many answered with "Inhibition of gluconeogenesis"- see markscheme.