SBI Exam Unit 1

Question 1

what are the characteristics of the 6 kingdoms?
1.Eubacteria
2.Archaebacteria
3.Protisa/protists
4.Fungi
5.Plantae
6.Animalia

Answer 1

1.Eubacteria:
-no nuclei
-heterotrophs or autotrophs
-asexual
cell wall

2.Archaebacteria:
-Prokaryotic
-similar to eukaryotes
-heterotrophs
-cell wall

3.Protisa/protists:
-single cell, multi cell, or eukaryotic,
-autotrophs, heterotrophs, or both,
-sexual or asexual
-no cell wall

4.Fungi:
-multi cell **
-heterotrophs
-sexual or asexual
-cell wall **

5.Plantae:
-multi cell
-heterotrophs
-sexual or asexual
-cell wall

6.Animalia:
-multi cell
-autotrophs
-sexual
-no cell wall

Question 2

What is a virus?

Answer 2

A non-living, non-cellular particle, with no growth, no energy use, and no waste

Question 3

Whats the diffrence between RNA viruses and DNA viruses?

Answer 3

RNA:unstable + high rates of mutation
DNA: more stable

Question 4

What is the Lysogenic cycle? What is the Lytic cycle?

Answer 4

Lysogenic cycle: virus enters cell → virus DNA infuses with host DNA →when host cell undergoes mitosis, virus DNA gets duplicated and passes to daughter cells. No symptoms

Lytic cycle: virus enters cell → replicates hundreds of times → bursts out of the cell, destroying the cell. Symptoms

Question 5

What are the characteristics of the 3 domains of bacteria?
1. Eubacteria
2. Archaebacteria
3. Eukaryotes

Answer 5

1. Eubacteria: prokaryotes, no nucleus, single cell, heterotrophs or autotrophs, asexual, cell wall
2. Archaebacteria:: prokaryotic, similar to eukaryotes, heterotrophs, cell wall,single cell ex. Extreme thermophiles
3. Eukaryotes:nucleus, multi-cell

Question 6

What are prokayotypes and Eukaryotes?

Answer 6

Prokayotypes(simple): cell wall, nucleoid, capsule, ribsomes, cell membrane,single cell

Eukaryotes(complex): cytoplasmic membrane, nucleolus, nucleus, nuclear membrane, mitochondria, ribsomes, cell mebrane, edoplasmic reticulum, multi cell

Question 7

What are autotrophs and heterotrophs?

Answer 7

Autotrophs: make their own energy, photosynthesis

Heterotroph:get energy from eating other organisms

Question 8

What is conjugation and Binary fission?

Answer 8

Conjugation: sexual reproduction of bacteria

Binary fission: asexual reproduction of bacteria

Question 9

What is Taxonomy?

Answer 9

the classification, identification, and naming of organisms

Genus and
Species are used to name organisms (scientific name)