1. How is the infinite diversity of proteins generated through the combination of various… amino acids?

1. How is the infinite diversity of proteins generated through the combination of various… amino acids?
A — 20
B — 46
C — around 80
D — several thousand

2. The unchanging parts of amino acids are:
A — amino group and carboxyl group
B — radical
C — carboxyl group
D — radical and carboxyl group

3. Molecules NOT constructed from amino acids include:
A — hemoglobin
B — glycogen
C — insulin
D — albumin

4. Proteins have different levels of organization, including:
A — two levels of molecule organization
B — three levels of molecule organization
C — four levels of molecule organization
D — denaturation

5. The bonds that maintain the primary structure of a protein molecule are called:
A — hydrogen bonds
B — peptide bonds
C — hydrophobic interactions
D — disulfide bonds

6. For the treatment of severe forms of diabetes, patients need to administer:
A — hemoglobin
B — antibodies
C — insulin
D — glycogen

7. In the process of a biochemical reaction, enzymes:
A — accelerate reactions without being consumed themselves
B — accelerate reactions and undergo changes as a result
C — slow down chemical reactions without changing themselves
D — slow down chemical reactions and undergo changes in the process

8. Denaturation is:
A — the loss of a protein molecule’s natural structure
B — the loss of a protein molecule’s primary structure
C — the restoration of a protein molecule’s natural structure
D — the restoration of a protein molecule’s primary structure

9. Select the FALSE statement.
A — Proteins are called proteins, and complex ones are called proteids.
B — Proteins are the primary source of energy in the cell.
C — Irreversible denaturation can be observed when frying eggs.
D — Denaturation can be reversible if the primary structure of the protein is not disrupted.

10. Choose the ORGANIC COMPOUNDS from the list below.
A — albumin
B — keratin
C — collagen
D — cholesterol
E — chitin
F — glycogen

11. Match proteins with their respective functions.
A — enzymatic
B — regulatory
C — transport
D — structural
E — protective
F — contractile
1) Hemoglobin
2) Myosin
3) Fibrinogen
4) Collagen
5) Polymerase
6) Insulin

12. Establish a correspondence between the characteristic of protein molecule structure and its structure.
CHARACTERISTICS OF STRUCTURE OF PROTEIN MOLECULE STRUCTURE
A — regular arrangement of chain links
B — molecule has a spiral shape
C — consists of several protein subunits
D — maintained by hydrogen bonds
E — may include a non-protein component
F — maintained by hydrophobic interactions
1) secondary
2) quaternary
3) tertiary
4) primary