Microbio PPT 1

Bacteria, algae, and protozoa are all examples of (a)  

(a)   are

• Parasitic

• Protein - coated genetic elements

• Dependent on their infected host

• Connected with the evolution of microbes and humans

Why are microbes very easy and very difficult to study?

(a)  

Answer explanation

-reproduce rapidly

-

-can be quickly grown in large populations in the laboratory

-

-can’t be seen directly (micro size)

-

-microscopes and other indirect means are used to study them

Prokaryotes have no true (a)  

Answer explanation

Bacterial-type organisms have been on the   planet for about 3.5 billion years

-only living inhabitants for first 2 billion years

-prokaryotes have no true nucleus (pre-nucleus)

Eukaryotes have a true (a)  

Answer explanation

Eukaryotic organisms arose about 1.8 billion years ago

-eu-kary means true nucleus

-

-precursors to the organisms that eventually formed multicellular animals

Light-fueled conversion of carbon dioxide to organic material that does not produce oxygen

(a)  

Light fueled conversion of carbon dioxide to organic material that PRODUCES oxygen

the source of oxygen on the planet

lead to the use of oxygen for aerobic respiration

(a)  

Answer explanation

-photosynthetic microorganisms account for 70% of   the Earth’s photosynthesis

What are the gasses microbes produce that regulate the temperature of the earth?

(a)  

This human use of microbes is an area of biotechnology that manipulates the genetics of microbes, plants, and animals for creating new products and genetically modified organisms.

(a)  

The transfer of genetic material from one organism to another to deliberately alter the DNA and produce a specific product

(a)