Biology Unit

How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though they look and perform completely different?

• The two different cells become mutated

• The proteins expressed in each cell are different

• They actually have different DNA in the two types of cells.

• The genome of the different cells changes

Tags

NGSS.MS-LS3-1

RNA polymerase moves in which direction along the DNA?

• 5' to 3' 

• 3' to 5' along the template strand

• 3' to 5' along nontemplate(coding) strand

• 5' to 3' along the template strand

The anticodon is located on 

• DNA

• mRNA

• tRNA

• rRNA

Which is an example of a parasitic relationship?

• a bee pollinates a flower

• a tapeworm takes nutrients from a dog

• an orchid lives in a tree but does not harm the tree

Tags

NGSS.MS-LS2-2

What is the term for each step in the transfer of energy and matter within a biological community?

• energy path

• food web

• trophic level

• food pyramid

Tags

NGSS.MS-LS2-3

What growth pattern describes a population whose growth rate slows or stops following a period of exponential growth?

• logistic growth

• population growth

• exponential growth

• predator-prey cycle

Tags

NGSS.HS-LS2-6

All of the living and nonliving things in an area that interact with each other are called a/an ______.

• community

• habitat

• population

• ecosystem

Tags

NGSS.MS-LS2-3

An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph

• Producer

• Consumer

• Mutualist

Tags

NGSS.MS-LS2-3

What does a food web represent?

• All connections of energy flow throughout all organisms in a habitat.

• The specific ways that mutualism is carried out.

• A single pathway or energy flow between organisms. 

• How carnivores get their food. 

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this?

• Mutualism

• Commensalism

• Parasitism

• Neutralism