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Question 43408

posted 11 months ago

a) Which of the compounds tested, inhibit the activity of lactase?
Classify the inhibitor(s) as likely to be competitive, allosteric, irreversible or denaturing and explain your reasoning.
b) Which of the compounds tested, activate the activity of lactase?
Classify the activator(s) as likely to be competitive, allosteric, irreversible or denaturing and explain your reasoning.

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Question 43409

posted 11 months ago

a) Report the optimum pH of lactase:
b) How does this pH compare to the pH of the environment in which lactase ismost active?
c) Why is there no lactase activity at pH 2 and 10?

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Question 43407

posted 11 months ago

Table 1 - Assessing the Specificity of Lactase
a) Which of the disaccharides tested is/are recognized and hydrolyzed by lactase?
b) What does this data tell us about the specificity of lactase?
c) A student added lactase to galactose B(1>4) galactose. Would you expectlactase to hydrolyze this disaccharide? Would you expect to obtain a positive resultwith the Diastix strip? Explain.
d) Imagine a student conducted the reaction in test tube #1 at a temperature of5.0 °C instead of 37 °C. Would the glucose concentration be increased or decreased from 500 mg/dL ? Explain.
e) Imagine a student conducted the reaction in test tube #1 at a temperature of50 °C instead of 37 °C. Would the glucose concentration be increased or decreased from 500 mg/dL ? Explain.

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Question 40570

posted 1 years ago

3. What are two primary differences between RNA and DNA
What is translation? What is tRNA
4. What is transcription? What is mRNA
2. List all Five Nucleic Acids and how do they pair up?
1. What are the three components of Nucleic Acids.
6. Explain how DNA codes for proteins.

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Question 40568

posted 1 years ago

1. List 3 functions of Lipids
2. Explain why saturated and trans-unsaturated fatty acids can cause healthissues.
3. Explain why LDL and VLDL are bad for your health and HDL are good for youhealth
4. Identify the lipids below. Furthermore, circle and identify the components ofthe lipid
5. Identify the following lipids
6. For the following molecule, predict the product of the following reactions:
Hydrogenation
Saponification
Hydrolysis

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Question 40567

posted 1 years ago

1. List three functions of carbohydrates.
2. Describe the Carbon cycle.
3. What are the monomers of these disaccharides?
Sucrose Maltose Lactose
4. Classify the following monosaccharides according to its length, chirality and functional group.
5. Also , draw the products when these carbohydrates are reacted with Cu²+(Benedicts reagent).
6. What are the differences in structure, function and biological availability of these polysaccharides?

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Question 40569

posted 1 years ago

1. List all of the functions of proteins.
2. What are essential amino acids.
3. Draw and identify the 4 components of an amino acid.
4. Classify the following amino acids:
Using google, draw an amino acid of the type of amino acid not represented above.2
Using google to look up the amino acids structure, draw
Serinyl-phenylalanyl-isoleucine
Describe
a. Primary Structure of Proteins
b. Secondary Structure of Proteins and what interactions determines secondary structure
c. Tertiary Structure of proteins and what interactions determines tertiary structure
d. Quartenary Structure
Explain what denaturation is and ways to denature proteins
8. What are enzymes?
9. Using the lock and key analogy, explain how enzymes work.
10. What factors affect enzyme activity
11. Describe the difference between competitive and non-competitive inhibition
12. Describe what co-factors and coenzymes are.

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Question 40704

posted 1 years ago

In which of the following pathways does a non-oxidative decarboxylation reaction occur? (Select all that apply! This is a hard one,so think about how you tell whether or not a reaction is oxidative.)
Fatty Acid Synthesis
The Krebs Cycle
Alcoholic fermentation
O The PDH
Gluconeogenesis
Glycolysis

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Question 40702

posted 1 years ago

Oxidation of NADH and FADH2 in the electron transport system differ in that:
Only NADH involves transfer of electrons from Complex II to Cytochrome C.
Only NADH involves transfer of electrons from Complex I to Coenzyme Q.
Only NADH results in pumping of H* into the inter membrane space.
Only NADH is oxidized by giving its electrons to succinate.

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Question 40708

posted 1 years ago

True or False: Anaplerotic and amphibolicare different words for the same thing.
O TrueO False

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