FNN 111 Lecture Notes - Lecture 6: Transamination, Digestion, Complete Protein

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12 Dec 2017

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Fnn111 chapter 6: proteins: crucial components of all body tissues. Proteins large complex molecules composed of amino acids. Primary source of nitrogen in the diet. 20 different amino acids used to make proteins. Made by transferring amino groups (transamination) can be made by our bodies. Transcription use of genetic information in the dna to make rna. Mrna copies the genetic information and carries it to the ribosome. Translation conversion of genetic information in rna to assemble amino acids in the proper sequence to synthesize a protein on the ribosome. Primary structure: sequential order of amino acids. Secondary structure: spiral shape due to chemical bonding between the amino acids. Tertiary and quaternary structure: further folding into a unique 3-dimensional shape that may be globular or fibrous. Proteins lose shape (denaturation) when subjected to: heat, acids and bases, heavy metals, alcohol, other damaging substances. Denaturation results in an irreversible loss in protein function.

Related Questions

If the bold term in each statement is correct hen write the letter C next to it. if the term is incorrect then replace it with the correct term.

The nucleotide bases found only in RNA and not in DNA is thymine.

The class of RNA molecules that carries the amino acids that are added to the growing polypeptide chain is tRNA.

During translation immediately after the first and second tRNA molecules become attached side by side on the mRNA., a hydrogen bond is formed between adjacent amino acids.

In the genetic code, 20 bases on the DNA code for a single amino acid.

The major lipid involved is transcription is RNA polymerase.

The one strand of DNA used as a template in the making of mRNA during transcription, is the template strand.

chocolatemuskrat416

When we use DNA to code for a protein, we call the process Transcription and Translation. Below are descriptions of processes that happen when we use DNA to code for a protein. Match the description of each process with the correct term - either Transcription or Translation.

1.A ribosome reads the mRNA and builds a protein from amino acids.
2.A copy is made of a gene in RNA
3.The primary transcript is modified: introns are removed and the transcript gets a cap and a tail
4.tRNA carries amino acids to a ribosome
5.The DNA unwinds, exposing the gene to be copied.

Protein Structure

a.Different function of proteins and examples:

b. Protein building blocks:

1. atomic composition of building block:

2. "parts" or "functional groups" of the building block:

c. Importance of side chain (R group):

d. Hydrophobic amino acids characteristics:

e. Hydrophilic amino acids characteristics:

f. Charged amino acids characteristics

Copy and complete the table below regarding the characteristics and which groups in the polypeptide interact together at each structural level of the protein.

	characteristics	groups interacting
Primary structure
Secondary structure
Tertiary structure
Quartenary structure

Value: 2

Choose the correct statement(s). You may choose more than one answer.

[mark all correct answers]
a. Proteins are the building blocks of amino acids.

b. Enzymes are a type of protein.

c. Quartenary structure consists of two or more polypeptide chains interacting.

d. Amino acids are made of carbon, hydrogen, nitrogen and phosphorus.

e. The primary structure of a protein is formed due to the interaction of side groups.

Value: 3

Put the following statements regarding the structural levels of a protein formation in the correct order.

Below is a sequence of events. Place them in the order they should occur, number 1 being the first item. Select the step number from the drop down next to each item.

Items to order:

1. Individual amino acids are bonded together via peptide bonds.

2. Two or more polypeptide chains interact via bonds.

3. Hydrogen bonds form between neighboring amino acids within a polypeptide chain allowing the chain to coil or form pleated sheets.

4. Side groups (R) of the individual amino acids interact with each other allowing the protein to assume its three dimensional shape.

Value:4

Put the following statements regarding the structural levels of a protein formation in the correct order

Individual amino acids are bonded together via peptide bonds.	1 2 3 4
Two or more polypeptide chains interact via bonds.	1 2 3 4
Hydrogen bonds form between neighboring amino acids within a polypeptide chain allowing the chain to coil or form pleated sheets.	1 2 3 4
Side groups (R) of the individual amino acids interact with each other allowing the protein to assume its three dimensional shape.	1 2 3 4

Value: 5

Hydrophobic amino acids will be found _______________.

a. In the interior (inner core) of a protein, away from the watery environment.

b. in the interior of a plasma membrane.

c. Both A and B

d. Neither

Value: 6

A protein's function is defined by ____________.

a. enzymatic reactions

b. it's shape.

c. chain of nucleotides.

d. the presence of carbon and hydrogen.

Value: 7

Which of the following is NOT considered a protein function?

a. transport of substances across membrane

b. enzymatic reactions

c. provides structural support

d. carries genetic information

FNN 111 Lecture Notes - Lecture 6: Transamination, Digestion, Complete Protein

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