Protein and amino acids

Proteins are ...

• Esters

• Monosaccharides

• Biopolymers

• egg albumin

What is included in proteins?

• Carbon, oxygen, hydrogen, nitrogen, copper

• Carbon, hydrogen, nitrogen, oxygen, sulfur

• Carbon, oxygen, hydrogen

• Carbon, oxygen, hydrogen, nitrogen, fluorine

How many of the known amino acids are involved in protein synthesis?

• 100

• 46

• 20

• 22

By means of what chemical bond are the amino acids in the protein molecule of the primary structure connected?

• disulfide

• peptide

• hydrogen.

• spiral

What is nucleic acid?

• Solution

• Biopolymer

• Inorganic compound

• Organic compound

Which nitrogenous base is a purine?

• Timin

• Guanine

• Cytosine

• Uracil

How are two strands of DNA connected?

• Oxygen bonds

• Carbon bonds

• Hydrogen bonds

• Nitrogen bonds

The rule of complementarity says

• A-T, G-C

• A-C, G-T

• A-G, C-T

• U-G, A-T

Choose the correct statements

• Pyrimidine bases: cytosine and thymine

• Pyrimidine bases: adenine and thymine

• Purine bases: cytosine and thymine

• Purine bases: adenine and guanine

The functions of DNA include

• Storing hereditary information

• The role of the matrix in the transmission of genetic information to the site of protein synthesis

• participation in photosynthesis

• Transfer of hereditary information from generation to generation