Explain the importance of essential amino acids to animals

Enzymes catalyze chemical reactions by

1. Altering the equilibrium point of a reaction
2. Making a non-spontaneous reaction spontaneous
3. Stabilizing the transition state
4. Being used up in the chemical reaction

Disulfide bridges are formed by

1. Cysteine side chains hydrogen-bonded
2. Methionine side chains covalently bonded
3. Cysteine side chains covalently bonded
4. Methionine side chains hydrogen-bonded

DNA is a polymer of ______ while proteins are polymers of _______

1. Glucose, acetyl-CoA
2. Nucleotide, amino acids
3. Nucleotides, fatty acids
4. Sugars, amino acids

Complete the genetic information (DNA base pairs, t-RNA and mRNA nucleotide bases, and the amino acids this gene codes for, in the following

DNA strand1 :    ATG     _____    _____   _____    _____     _____    CGC

DNA strand 2 : *_____    GCC    _____   _____    _____    AGT     _____   

mRNA : _____   _____    AUA    _____    UUU   _____    _____

   tRNA : _____    _____   _____     UAC     _____   _____    _____

Amino acids :   ______   ______   _____   _____   ______   ______   ______

(Remember which type of RNA actually carries the CODE as codons!)

* this is the DNA "sense strand" that will be transcribed to mRNA

Red blood cells lack nucleus and mitochondria in order to accommodate maximum space for hemoglobin, a principal means of delivering oxygen to different tissues.

Which of the following enzyme deficiencies could cause hemolytic anemia due to breakdown and loss of red blood cells?

Write and describe about the important of Protein and Amino Acids Test in healthcare or industry.

Note: The report must not exceed 3 pages maximum (NOT include cover page and references), type of test, purposes and the important of the test with reliable references

Write and describe about the important of Protein and Amino Acids Test in healthcare or industry.

Note: The report must not exceed 3 pages maximum (NOT include cover page and references), type of test, purposes and the important of the test with reliable references

Write and describe about the important of Protein and Amino Acids Test in healthcare or industry.

Note: The report must not exceed 3 pages minimum , type of test, purposes and the important of the test with reliable references

biochemistry I need an expert

What four enzyme activities unique to gluconeogenesis are needed to bypass the three irreversible steps of glycolysis. Draw the reactions catalyzed by these four enzymes.

1. Ion channels contain a selectivity filter that (choose best answer)

a) selects for positively charged ions by virtue of the negatively charged amino acids lining the pore, but allows similar ions through, like Na+ and K+.

b) selects for size of ions based on interactions with the ion transport protein.

c) binds with extreme sensitivity to their specific ion, akin to an enzyme forming a specific binding site for a substrate.

d) selects for ions based on size and charge due to the width of the channel and charge of amino acids lining the channel.

2. What is the role of K+ -gated ion channels in an action potential?

a) They do not have a role in action potentials

b) They provide the energy for the sodium potassium pump to reestablish resting potential

c) They lead to the action potential reaching its highest state of cell depolarization

d) They help reverse the action potential by repolarizing the cell.

3. Which of the following has the lowest electron affinity

a) Cytochrome c reductase complex

b) NADH dehydrogenase complex

c) Oxygen

d) Cytochrome c oxidase complex

4. The low redox potential of NADHmeans that is has a

a) High electron affinity

b) Very stable bond

c) Low free energy

d) Tendency give up electrons

In which section of the small intestine does the most chemical digestion take place?

Question options:

Which type of cell lines the stomach?

Question options:

Which of the following is not associated with Mechanical Digestion?

Question options:

The small intestine absorbs what?

Question options:

Diarrhea, nausea and abdominal cramps are symptoms associated with which of the following?

Question options:

2.Briefly describe the metabolism of glucose, fatty acids, and amino acids during the fasted (basal) state. Be specific by including the liver, brain, RBC, muscle adipose tissue, and kidney?

Input/Circle correct answer where applicable.

a) The main class of enzymes that digest proteins are known as_______________. Endopeptidases causes bonds to break in the middle/end of peptides. Exopeptidases are important for cleaving off the terminal amino acids. For C-terminal amino acids _________-peptidases will be used while _________ -peptidases will cleave N-terminal amino acids. Examples of such enzymes are pepsin, which requires an alkaline/acidic environment in the _______________ in order to be functional, and _______________, found in pancreatic secretions, which requires an _______________ environment.

b) Ghrelin is an (orexigenic/anorexigenic) hormone. Its levels in the blood are (increased/decreased) during times of fasting or hypoglycemia and (increased/decreased) when blood glucose and amino acid levels are high. Ghrelin acts at the level of the stomach to (increase/decrease) gastric acid release and motility. With regards to its functions on food intake, the hormone that works as part of the “antagonistic pair” with ghrelin is _________.

c) Carbohydrate digestion mainly occurs in the ______________ and _______________ whereas protein/peptide digestion mainly occurs in the ______________ and ______________.