d

Question 1

Amino acids in the protein molecule are linked by bond

Answer 1

peptide
covalent

Question 2

Conjugation occurs in

Answer 2

cilliata
bacteria

Question 3

Sexual dimorphism is

Answer 3

differentiation of individuals by primary and secondary sexual characteristics

differentiation of individuals by gonads, morphological and functional properties

differentiation of male and female individuals by primary and secondary sexual characteristics

Question 4

Model organisms used in biological experiments include

Answer 4

Drosophila
viruses
bacteria
amphibians
guinea pigs
chimpanzees

Question 5

Embryos of all multicellular animals pass in their individual development:

Answer 5

the morula stage
the blastula stage
the gastrula stage