Category Biotechnology Assignment Help

Molecules of Life – Compare the structure and function of phospholipids and triacylglycerols

Question 1
a. Explain why we consider lipids to be a class of macromolecules even though they are often small and may have very different structures.

b. Compare the structure and function of phospholipids and triacylglycerols. Explain how the structure relates to function.

c. Describe the structure and function of lipoproteins.

d. Discuss LDL and HDL cholesterol in the blood. Explain why it is important to maintain low levels of LDL cholesterol in the blood and why this can be a problem for some individuals.

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Question 2
a. Define the following terms

  • Metabolism
  • Catabolism
  • Anabolism

b. Explain why energy metabolism takes place in multistep pathways.
c. Explain how energy is trapped by metabolism.

d...

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Haematology and Immunology – Describe how bleeding and clotting disorders in haemostasis are diagnosed in the laboratory

Question 1

a) Describe how bleeding and clotting disorders in haemostasis are diagnosed in the laboratory.
b) How and why is a patient on Warfarin therapy monitored in the laboratory. How does Warfarin cause it’s effect?
c) Give an example of how the International Normalised Ratio (INR) is calculated if the prothrombin time (PT) was 25 secs, the mean normal time was 10 secs and the International Sensitivity Index (ISI) was 1.05.

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Question 2

An elderly Caucasian patient presents with shortness of breath and tiredness. Their Full Blood Count, (FBC) indicates that they have a microcytic anaemia .
a) What would the data from the FBC results be likely to show?
b) What other investigations could be performed to aid diagnosis and what morphological features might a ...

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Biology Homework Help – Evaluate the role of the p53 protein in tumour suppression and assess the consequences of TP53 mutations in individuals with Li Fraumeni Syndrome

1. Evaluate the role of the p53 protein in tumour suppression and assess the consequences of TP53 mutations in individuals with Li Fraumeni Syndrome.
2. Discuss the importance of mutations in APC in the initiation of colorectal cancer and assess the consequences of germ line mutations in individuals with familial adenomatous polyposis (FAP). Include molecular details of the Wnt signalling pathway in your answer.
3. Discuss the mechanisms that operate in the normal process of apoptosis, and review how cancer cells evade apoptotic death.
4. “Understanding of the molecular basis of cancer has led to the development of novel therapeutic agents.” Discuss this statement using two named cancers to illustrate your answer.

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Human Biochemistry: Describe the key stages in digestion and absorption of carbohydrates

Question 1

a) Describe the key stages in digestion and absorption of carbohydrates.
b) Explain the effect on carbohydrate digestion/ absorption if a patient had
i) stopped producing the enzyme lactase.
ii) a section of the duodenum removed surgically due to cancer.

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Question 2
a) DEFINE hunger and EXPLAIN how it is affected by events in the digestive system.
b) EXPLAIN how leptin acts to control body fat levels.
c) What effect will a mutation in the leptin gene (that reduces levels of this hormone) have in a human child? What could be done to treat the child?

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Question 3
Discuss how blood glucose homeostasis is maintained by the action of insulin, and glucagon.
(Your answer should encompass both the differing responses in different organs and how ...

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