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WorksheetsIB SEHS Option D
Total questions: 33
Worksheet time: 17mins
Where does salivary amylase break down food?
Mouth
Stomach
Small intestine
Large intestine
What is the typical pH range in the stomach?
1 - 4
4 - 5
5.5 - 7.5
6.0 - 8.0
Select the correct response for an enzyme
It is a lipid
They are non-specific (they target any molecules)
They work optimally under any pH environment
It is a catalyst that speeds up the breakdown of molecules
In regards to enzymes, select the incorrect statement
Enzymes aid in the breakdown of large food molecules into smaller more soluble substances that can be absorbed into the blood
Slow down the rate of reaction
Different enzymes with different functions are produced in particular areas of the digestive tract
Most enzymes only catalyse one reaction
The enzyme responsible for breaking down protein in the stomach is
Salivary amylase
Pancreatic amylase
Pancreatic lipase
Bile
Pepsin
Select the incorrect statement for the absorption from the intestinal lumen to the capillary network
Proteins enter the lymphatic system
Carbohydrates are absorbed as monosaccharides
All substrates (CHO, fatty acids & protein) cross the brush border membrane and passes through the cytosol of the absorptive cell
Lipids cross the basolateral membrane
In regards to water, which of the following statements is incorrect?
Water is essential for all metabolic processes in the body
Water helps to regulate body temperature
Water helps to lubricate joints
Excess water helps to increase the concentration of sodium in the blood
Which of the following is incorrect in terms of where extracellular fluid is found
Blood plasma
Lymph
In cells
Fluid secreted by glands
The water distribution of trained athletes is lower than untrained individuals
True
False
Which is correct for a simple negative feedback model?
Sensor - controller - effector - feedback (then repeat)
Sensor -feedback - controller - effector (then repeat)
Sensor - controller - feedback - effector (then repeat)
Which of the following is an incorrect statement about ADH & Aldosterone?
The permeability of the distal tubule and collecting duct is controlled by ADH
ADH causes the urine to become more concentrated
Aldolsterone is produced in the cortex of the adrenal glands which are located above the kidney
Aldolsterone acts on the distal tubule and collecting duct to decrease Na+ ion reabsorption
Which is not a method to monitor hydration status of athletes?
Urine colour (urinalysis)
Urine osmolarity (concentration of dissolved substances)
Variation in body mass
Using a biometer
Urine volume
Select the incorrect response in terms of why endurance athletes require greater water intake
Due to greater energy demands
Due to lower breathing rate
The need to regulate body temperature
Decrease in plasma volume
What is NOT a risk of low electrolyte balance during chronic exercise
It may improve cognition
It may contribute to fatigue
There may be a decline in performance
The athlete may be at risk of hypoatremia
Is this a correct definition of basal metabolic rate? The rate at which energy is used by basic bodily function
Yes
No
Which components make up daily energy expenditure?
All answers
Basal metabolic rate
Thermic effect of physical activity
Thermic effect of feeding
Which of the following is incorrect in regards to the relationship of energy intake and expenditure
Weight loss results from intake below the daily energy requirements
Weight loss results from a decrease in daily caloric intake and increase in energy expenditure
Weight gain results in a decrease of caloric intake
Weight gain results from maintaining a normal intake and decreasing energy expenditure
In regards to body composition, what do athletes want?
Increase fat mass to increase power to weight ratio
Increase fat mass to decrease power to weight ratio
Increase fat free mass to increase power to weight ratio
Increase fat free mass to decrease power to weight ratio
Which of the following are ways athletes manipulate their body composition?
Fad diets
Crash diets
Macronutrient exclusion or reduction
All answers
Which of the following contains low levels of glycogen
Fast twitch Ia
Fast twitch IIb
Slow twitch I
Slow twitch II
Which of the following events doesn't utilise high rates of muscle glycogen?
1km swim
400m sprint
2 min max ergo
Soccer defensive phase
In regards to muscle fibres, which of the following statements is incorrect?
Type I fibres are more frequently used during endurance events
Type IIa are the first to be recruited during light exercise
Type IIb fibres are employed during exercise that require levels of intensity approaching maximal levels
As the intensity of exercise increases beyond moderate levels (and type I fibres become progressively glycogen depleted)
Is this a correct definition of glycemic index, it is a ranking system for carbohydrates based on their immediate effect on blood glucose concentrations when compared with a reference food such as pure glucose
Yes
No
Which is not a high GI food
Baked potatoes
Water melon
White bread
Green leafy vegetables
Which of the following is an incorrect statement about GI foods?
For general health consume low to med GI foods
Pre exercise consume low GI foods
Post exercise consume high GI foods for 15mins to 2 hrs
Post exercise 2hrs plus consume high GI foods for 24 hrs
Which of the following statement regarding carbohydrate loading is incorrect?
Traditionally the carbo load was 3-4 days of low carbs then 3-4 days of high carb
The taper method uses a reduction in intensity while carbo loading for 3 to 4 days
Athletes should consume 20 g/kg-1 body weight during the carbo loading phase
The goal of carbo loading is to stimulate glycogen synthase
Which of the following statements is incorrect in regards to sodium?
It is not an important electrolyte in extracellular fluid
Important for transmembrane electrical and chemical gradients
Plasma volume better maintained with sodium
Stimulates glucose absorption via the active co-transport of glucose and sodium which creates an osmotic gradient that promotes net water absorption
Which of the following are nutritional ergogenic aids
All answers
Caffeine
Creatine
Bicarbonate
Sports drinks/gels and bars
The recommended daily protein intake for non-athletes is
0.2 g/kg-1 body weight
0.8 g/kg-1 body weight
1.6 g/kg-1 body weight
> 2 g/kg-1 body weight
Are all these foods vegetarian options for protein? Peanuts, beans, lentils, almonds, rice, wheat, tofu, whole grains, seeds
Yes
No
Which of the following is an incorrect statement for recommended protein intake?
Untrained - 0.8 g/kg-1 body weight
Strength Athlete - 4.4 to 4.8 g/kg-1 body weight
Endurance Athlete - 1.2 - 1.4 g/kg-1 body weight
Female Athlete - approx 15% less protein than male counterpart
Which of the following is an incorrect statement regarding the harmful effects of protein intake?
Increase stress on the kidneys
Decrease risk of cancers
Increase water loss
Increase body weight
What is approximate recommended amount of carbohydrate per Kg of body weight when carbo loading with the taper method 3-4 days prior to a long endurance event?
1g
10g
100g
1000g
