Unit 6 Test 2

Chemistry of Life

100

(NO STEAL)

Did amino acids exist before the formation of Earth ? Explain your reasoning. 

Yes, these chemicals existed long before the formation of earth.

300

List the following in the correct chronological order.

a. Pre-biotic chemistry

b. RNA world

c. Stable hydrosphere

d. Formation of Earth

e. Diversification of life

d, c, a, b, e

300

What is DNA /RNA ?

They are nucleic acids, a biomolecule used to carry genetic information. They are composed of essential atoms such as carbon, hydrogen, oxygen, etc.

500

List two main differences between DNA and RNA.

DNA has Thymine while RNa has Uracil

DNA is double stranded while RNA is single stranded

600

Write the chemical reaction that led to the formation of oxygen within our atmosphere.

 CO₂ +   H₂O + heat  →  O₂ +  C_xH_y

Taxonomy

100

What is taxonomy ?

Taxonomy is an ordered division of organisms into categories based on a set of characteristics used to assess similarities and differences

300

(Only 1 team can steal)

Which of the following s classified as eukaryotic ?

a. Bacteria

b. Protists

c. Archaea

d. Prokaryotes

e. None of the above

b

300

What is the location of DNA in prokaryotes (Bacteria & Archaea)

 Nucleoid

500

 Name all sections of the taxonomic chart in order. 

600

What are the rules for organisms to be considered biotic ?

Movement

 Respiration - able to do cellular respiration

Sensitivity - be sensitive to the environment

Growth

Reproduce

Excretion

Nutrition - get nutrients

Domain

100

What are the three sections of domain ?

 Bacteria, Archaea, & Eukarya.

300

Which division in domain are considered extremophiles ? 

Archaea

300

What are eukaryotes ? Specify 

Multi cellular organisms with DNA in the  nucleus 

Membrane-bound organelles like mitochondria and chloroplasts.

500

What is the bacterial cell wall made up of ? 

You can name the substance or the type of linkages.

Peptidoglycan

 Ester Linkages

600

What are two differences between bacteria and archaea ?

Bacteria: cell wall made up of peptidoglycan. Cell wall is made up of ester linkages.

Archaea: cell wall made up of pseudopeptidoglycan and proteins bound by ether linkages. They can live in extreme conditions (extremophiles). 

Kingdom

100

(NO STEAL)

true or false. Protists can be either heterotrophs or autotrophs

True

300

What is the fungal cell wall made up of ?

Chitin

300

What are the six kingdoms of life ?

- Animalia

-Plantae

- Fungi

-Protista

-Eubacteria

-Archaebacteria

500

What role do Eubacteria play in the development of earth ?

Play an active role in biogeochemical cycles (Carbon cycle & Nitrogen cycle)

600

Name an example for 3 out of the six kingdoms

TBD

Random Review

100

What does the term sessile mean ?

Sessile:  Permanently attached or fixed and not free-moving

300

How do fungi replicate ? 

Asexually & Sporulation: the process of forming and releasing spores, which are reproductive units that enable fungi to reproduce and spread

300

What does the modern cell theory state ?

1. Cells are the smallest living unit in all organisms

2. All living organisms are made up of cells

3. All cells come from other pre-existing cells

500

What are the three shapes or  morphological appearances Eubacteria can have ?

Cocci = Round

Bacilli = Rod

Spirilla = Spiral

600

If antibiotics are used to treat infections, why aren't antibiotics given to treat ringworm ? 

Bacterial cells and Fungal cells are not the same !