Biological Diversity

Question 0

Characteristics of a prokaryotic cells

Answer 0

1. There is a single chromosome consist of a short circular DNA molecule .
2. There I’d no nucleus
3. There is no organelles although various membranes might serve similar functions.
   Flagella when present are made of the globular protein flagellin.

Question 1

Characteristics of Eukaryotic cells

Answer 1

1. Chromosomes consist of a long, linear DNA molecule packaged with histone proteins.
2. Chromosomes are enclosed in a nucleus.
3. specialized membrane- enclosed bodies serve to isolate metabolic activities
4. Flagella and cilia, when present are made of the protein tubulib arranged in 9+2 microtubule arrays.

Question 2

Another name for heterophs

Answer 2

Chemoheterotrophs

Question 3

All living things are classified into three domains

Answer 3

Bacteria, eukarya, archaea

Question 4

Is bacteria A prokaryote or a eukaryote

Answer 4

prokaryote

Question 5

How is bacteria different from archaea and eukaryotes?

Answer 5

1. Bacterial cell walls are made with peptidoglycan, a polymer of a monosaccharide with amino acids.
2. Certain antibodies disable the activity of bacterial ribosomes and disrupt protein synthesis.

Question 6

What are the different groups of bacteria?

Answer 6

1. Cyanobacteria
2. Purple sulfur bacteria.
3. Chemoautrophs
4. Nitrogen fixing bacteria
5. Heterotrophic bacteria

Question 7

How does archaea bacteria and eukaryotes

Answer 7

1. Archaela cell walls contain various polysaccharides but not peptidoglycan , cellulose, or chitin
2. Archaela plasma membranes contain phospholipids differ from phospholipids of bacteria and eukaryotes.

Question 8

How is Archaea similar to eukaryotes?

Answer 8

1. Some antibiotics work by disabling ribosome activity and disturbing protein synthesis. Ribosome activity in both archaea and eukaryotes is not inhibited by these antibiotics. In bacteria ribosomes activity is inhibited by these antibiotics.
2. Intron’s are presented in the genes of eukaryotes and some archaea but are absent in bacteria.

Question 9

Many archaea live in what kinds of envierments?

Answer 9

Extreme environments (very salty, very hot, or very acidic) but others lives in the same habitats as bacteria.