Levels of Protein Structure

Which level of protein structure describes a protein's three-dimensional shape?

• Primary

• Secondary

• Tertiary

• Quaternary

Which level of protein structure belong the protein in the picture?

• Primary

• Secondary

• Tertiary

• Quaternary

What are the elements found in proteins?

• CHO

• CHO(P)

• CHON(S)

• CHONP

The two types of folding in the secondary structure are.....

• alpha-helix & beta-pleated sheets
• polypeptide & nucleotide
• globular & fibrous

The main bonding in the secondary structure of a protein is due to.....

• covalent bonding
• ionic bonding
• hydrogen bonding
• polar bonding

The best definition of globular proteins is:

• Soluble proteins with hydrophobic groups pointing inwards

• Insoluble proteins with hydrophobic groups pointing inwards and hydrophilic facing outwards.

• Soluble proteins with hydrophobic groups pointing outwards and hydrophilic facing inwards.

• Soluble proteins with secondary structure. Hydrophobic groups are facing inwards and hydrophilic facing outwards.

The polypeptide in the diagram consists of;

• 3 amino acids and 3 peptide bonds

• 3 amino acids and 2 peptide bonds

• 4 amino acids and 2 phosphodiester bonds

• 3 amino acids and 2 phosphodiester bonds

Tags

NGSS.HS-LS1-1

Which level of protein structure belong the protein in the picture?

• Primary

• Secondary

• Tertiary

• Quaternary

Conjugated proteins are:

• Contains non-protein group, has prosthetic group with ions, such as antibodies.

• Contains non-protein group, has prosthetic group with ions, elastin is a conjugated protein.

• Contains a nonpolypeptide portion, such as hemoglobin.

• Conjugated proteins are quaternary structure with a non-protein group, with Zn ions, such as hemoglobin

Which of the following properties and function are from fibrous protein ¨collagen¨?

• Insoluble, flexible but not stretch and give strength in skin.

• Insoluble, inflexible and make horns

• Insoluble, strength and elasticity and structural function.

• Soluble and carry oxygen in blood.