Tuesday 2/19/13Pick up a study guide & the clicker

with the number next to your name. Please be READY TO GO when the bell

rings

Turn in your books & HIV Labs!!!

4th SIX WEEKS ASSESSMENT REVIEW

In binomial nomenclature, which two classification levels make up

the scientific name?

Genus & Species

Which species is the most closely related

to the sea lion?

seals

Which two species share the least characteristics?

A. raccoons and weasels

B. otters and FelidsOtters & Felids

Using the hierarchy of classification to the right, two species are the most similar if they belong to the

same _________.

Genus

True or False: Crocodiles have more traits in common with mammals

than they do with birds?False; birds & crocodiles are on the

same evolutionary branch

In the nitrogen cycle, what organisms that live in soil and on roots fix or make usable by plants the greatest amount of nitrogen?

Bacteria fix the most nitrogen.

Are bacteria biotic or abiotic?Biotic (living)

What would happen if decomposers like earthworms were removed from an

ecosystem?

The cycle will be disrupted and slowed

If a bee eats nectar from flowers and pollinates the flowers at the same

time, what type of relationship would it be?

Mutualism, they both get something

good.

How is a tick feeding on a dog considered to be

parasitic?

The tick takes away nutrients from the dog.

Write in the percentage of energy at each level in the

food chain.

100%

BirdGrass Grasshopper Snake

10% 1% .1%

What would happen if the bird population increased?

The grasshoppers would decrease and the grass and

snakes would increase

BirdGrass Grasshopper Snake

What is the role of the bird?

BirdGrass Grasshopper Snake

Producer

1o Consumer

2o Consumer

3o Consumer

Which level contains the herbivores?

BirdGrass Grasshopper Snake

Where do herbivores get their energy from?

What trophic level of a food web would be the most damaging if it

died out?

producers

Why?

All the energy in the system starts with the producers. All other levels would

run out of food eventually.

Which level provides the most energy?

Grass

Grasshopper

Raccoon

Wolf

Producers

1st Consumer

2nd Consumer

3rd Consumer

If there are 50 kilocalories of energy at the tertiary consumer level in a

habitat, how many kilocalories would be at the producer level?

50 tertiary500 secondary5,000 primary

50,000 producer

How much energy is passed to the next level?

10%

What happens to the other 90%?

Used by the organisms at that level & given off as heat

Which organism(s) can be both a 2nd & 3rd level consumer?Coyote, Hawk, Roadrunner

How are Archaebacteria & Eubacteria different from the other

kingdoms of life?

Unicellular & Prokaryotes

Which bacteria kingdom consists of the “extremists” who can live in

harsh environments?

Archaebacteria(ancient bacteria)

How do vaccines work?

They induce the body to recognize the pathogen as foreign.

What does AIDs do to a person’s immune system?

Weakens it

What part of the body does HIV attack?

Immune System

What type of cells does HIV attack?

T-lymphocytes

True or False: A virus is larger than a bacteria cell.

False; viruses are the smallest particles & ALL are harmful

How are viruses and prokaryotes different?

A virus does not replicate on its own, but prokaryotic cells do replicate on

their own.

True or False: Antibiotics can treat both viruses & bacteria.

False; antibiotics ONLY work on bacteria

True or False: Both viruses & bacteria have proteins.

True; viruses have a protein coat called a CAPSID

True or False: A virus does not have a nucleus, but bacteria do

have nuclei.

False; bacteria are PROKARYOTIC

True or False: Both viruses & bacteria have genetic material.

True; viruses can have DNA or RNA