Lecture 8

Question 1

How do Decomposers get their energy and carbon ?

Answer 1

Absorptive chemoheterotrophs: release enzymes into environment break down organic matter and absorb smaller nutrients

Question 2

What are Decomposers essential for? (2)

Answer 2

1. Ecosystem stability
2. Biochemical cycles (N and P)

Question 3

Bacteria cell type?

Answer 3

Prokaryotic cell

Question 4

Cell composition of bacteria

Answer 4

Unicellular

Question 5

Cell structure of Bacteria

Answer 5

Cell wall of peptydoglycan

Question 6

What are the modes of nutrition of bacteria

Answer 6

Chemoheterotrphs, photoautotrophs, chemoautotrops,
And photoheterotrophs

Question 7

Reproduction of bacterial

Answer 7

Asexual ; binary fission

Question 8

Bacteria gaining new DNA: what is transduction from a virus ?

Answer 8

DNA stolen from a virus

Question 9

Bracteria gaining new DNA what is Transformation ?

Answer 9

DNA from environment

Question 10

Bacteria gaining DNA what is conjugation ?

Answer 10

2 bacterium exchange plasmates (prices of DNA)

Question 11

Bacteria cell shapes (2)

Answer 11

1. Cocci (dots)
2. Bacilli (rod shaped)