Biochemistry HNC outcome 1 Revision

Which biomolecule is this the basic structure of?

• Fatty Acid

• Amino Acid

• Monosaccharide

• Nucleic Acid

Which type of bond joins amino acids together?

• Phosphodiester

• N-Glycosidic

• Peptide

• Ionic

Proteins are important in the cell membrane transport, allowing selective passage of specific molecules to enter from the external environment. Name the two main mechanisms to facilitate this. (Select two answers)

• Active Transport

• Inactive Transport

• Inverse Diffusion

• Facilitated Diffusion

Active transport is the movement of a substance across a membrane against a concentration gradient.

• True

• False

Active Transport requires the use of energy in what form?

• ATP

• ADP

• Glucose

• GDP

Facilitated diffusion is the process of spontaneous passive transport of molecules or ions across a membrane.

• True

• False

Facilitated Diffusion requires energy in the form of ATP.

• True

• False

Name two types of secondary protein structure folds

• α - helix

• globular

• β - pleated sheet

• gamma- square

Which protein structure provides an important 3D shape for specific protein functions in molecules such as enzymes, hormones and antibodies?

• primary

• globular

• fibrous

Secondary structures of proteins are maintained by which type of bonds?

• hydrogen

• ionic

• disulphide