Module 7

Which of the following are true regarding the action potential (AP)

• The AP is carried along the axon membrane

• The AP is an all or non signal

• The AP is always of the same amplitude and duration in a given cell

• the AP is a brief electrical signal

• All of the above are correct

Chemicals that transmit an impulse across a synapse to anther cell are?

• reflexes

• neurotransmitters

• action potentials

• cell bodies

What are tiny gaps in the myelin sheath at which the action potential is relayed along the neuron?

• schwann cells

• merkel disks

• golgi bodies

• nodes of Ranvier

Hydrocarbons are compounds that contain

• only carbon

• only carbon and hydrogen

• only carbon, oxygen, and hydrogen,

• only carbon, oxygen, hydrogen, and nitrogen

Tags

NGSS.HS-LS1-6

Which formula represents an unsaturated hydrocarbon?

• A

• B

• C

• D

What is the correct name for the following compound?

• 3,4-dimethylheptane

• 4-methyl-5-ethylhexane

• 3-methyl-4-propylpentane

• 4,5-dimethylheptane

Tags

NGSS.MS-PS1-1

What is the correct name for the alkyne shown?

• butyne

• but-1-yne

• but-2-yne

• 1-methyl-1-propyne

Tags

NGSS.MS-PS1-1

Which statements below describes the feature labeled D?

• Rift Valley due to convergent boundaries.

• Rift Valley due to divergent boundaries.

• New Sea Floor is forming.

• Old Sea Floor is being recycled.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Which statements are true about ocean density and salinity?

• Sea water is less dense than fresh water.

• Sea water is more dense than fresh water.

• Warm equatorial waters have lower salinity.

• Warm equatorial waters have higher salinity.

Tags

NGSS.MS-ESS2-6

Which of the following is a characteristic of a chemical reaction?

• Change in color

• Formation of a precipitate

• Emission of gas

• All of the above

Tags

NGSS.MS-PS1-2