Discuss the three major developmental stages that mark human growth and development between birth and adulthood. What are the hallmarks of each stage, and what events and milestones divide one stage from the next?

Effects of pH, heat shock and nutrients starvation on metabolic reactions

1. The table shows the mass of fibres in 100 grams of each food item below.

1. A small tin of beans contains 200 grams. If you are going to eat two-thirds (2/3) of this small tin of beans, how much fibres will you consume? Show your calculations.
2. List TWO functions of fibres in the diet.
3. What is the consequence of lacking in fibres in the diet? (1 mark)
4. Potatoes contain carbohydrates. Which form of carbohydrate do they contain? (1 mark)
5. Briefly describe the digestion of this form of carbohydrate described in (iv) in mouth and small intestine before absorption.

List the three ‘tubes/structures’ entering and exiting the hilum of the lung. Which of those tubes is afferent to the lungs? Which of those tubes are efferent to the lungs?

The Mesentery Describe the formation of lymph within that region, relating that to blood vessels within the region and addressing the physical forces that lead to lymph production. How would the lymph that is formed in that region be returned to the blood supply? What vessels and lymph organs would it travel through? For the second part of your discussion imagine that there is a potential pathogen within your identified region - what involvement of other lymph organs or individual immune cells would you expect?

Should the following substances appear in the urine in large amounts? State YES, NO & why or why not to each substance. Answer them individually please

Glucose
Erythrocytes
Leukocytes
Protein

Describe the process of lymphocyte trafficking and activation in secondary lymphoid tissues.

• What component of enzyme structure is responsible for enzyme specificity?

• How did the lactose intolerance test that pei took provide evidence that she was lactose intolerant?

What is the directional transfer function?

What is timbre?

What is a restoration effect in auditory perception?

What is the acoustic startle reflex?

Describe the two major cues that our brain uses to localize sound waves.

What is auditory stream segregation and what cues does the brain use to achieve it?

Ian is an 18 year old gymnast training at a private gym with many other male and female gymnasts. He is competing at an advanced level and is likely to make the next Olympic team. Lately he has been finding some of his balance and strength moves on the rings and parallel bars more difficult. He has gone through a bit of a growth spurt and has gained about 5 pounds over the last year. He suspects the weight gain is causing his performance difficulties. He decides to try a weight loss program that will help him lose weight before his next big competition in 6 weeks. He is not sure how many calories to consume and therefore arbitrarily decides to eat 1500 calories per day.

1) Describe the main guidelines athletes should follow to lose weight without decreasing sport performance.

2) Which assessments are required to determine whether Ian needs to lose weight?

3) What type of diet and exercise plan would you recommend for Ian?

4) What additional concerns do you have for Ian's health and sport performance?

Describe the structure and contents of an erythrocyte. How are they different from a normal cell?

Number the events below 1 – 7 to represent the correct sequence of events in skeletal muscle contraction and relaxation

___Ca2+ binds to troponin; tropomyosin moves, exposing the active site of actin

___Acetylcholine (ACh) triggers an end-plate potential in the motor end plate.

___ The motor neuron stops releasing ACh and Acetylcholinesterase degrades the ACh in the synaptic cleft

___An Action potential in the sarcolemma travels down the T-Tubules

___ Ca2+ is released from the sarcoplasmic reticulum into the cytosol

___ The cytosolic concentration of Ca2+ returns to the resting level, the active sites of actin are blocked, and the muscle fiber relaxes

___ Actin and myosin bind, and myosin undergoes a power stroke. ATP detaches actin and myosin, and the cycle repeats resulting in contraction of the muscle fiber