Test 1 Evolution And Chem

Question 1

What components do prokaryotes have?

Answer 1

Ribosomes, chromosomes, cytosol, plasma membrane, cilia, cell wall

Question 2

Name the order of the 11 major things that evolved since the origin of earth 4.5mya

Answer 2

Bacteria 3.5bya> photosynthesis 2.7bya> aerobic respiration 2.4 bya> photo-endomembrane system 1bya> protists 850mya> archaea 850mya> sponges 600mya> fungi 460mya> land plants 450mya> centipedes 415mya> amphibians 365mya

Question 3

What are the groups that make up an amino acid?

Answer 3

Carboxyl group, amino group, hydrogen, and side chain

Question 4

If a side chain of an amino acid has S, N, or O in it is it polar/ionized or non-polar/ionized?

Answer 4

Polarized/ ionized

Question 5

What are covalent bonds?

Answer 5

Sharing of e-

Question 6

What are ionic bonds?

Answer 6

Complete donation of an e- with an electrostatic attraction

Question 7

What is a hydrogen bond?

Answer 7

It is a covalent bond with electrostatic attraction