Unit 1 Review

What type of reaction is shown in the image?

• Dehydration synthesis

• Hydrolsis

• DNA replication

• RNA translation

In an experiment testing the effect of fertilizer on plant height, what is the dependent variable?

• Amount of fertilizer

• Amount of sunlight

• Amount of water

• Plant height

Tags

NGSS.MS-LS2-1

Which of the following might denature proteins?

• Increased temperature

• Change in pH

• Ultraviolet light

• All of these would denature proteins

Tags

NGSS.HS-PS1-5

Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?

• Water is an acid

• Water has a high heat capacity.

• Water acts as a buffer.

• Water is a versatile solvent.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Small insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, somewhat like a person walking across a trampoline, but they do not break the surface. What is the best explanation for why this happens?

• The insects are light enough so that they do not break the hydrogen bonds holding the water molecules together

• The insects actually use their wings to hover slightly above the water's surface and they only skim it with their feet

• The insects' feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water's surface

• The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next

Tags

NGSS.MS-PS2-5

What functional group is shown?

• Methyl

• Hydroxyl

• Carbonyl

• Carboxyl

What functional group is shown?

• Methyl

• Hydroxyl

• Carbonyl

• Carboxyl

Atoms in molecules share pairs of electrons when they form

• Covalent bonds

• Ionic Bonds

• Polymers

• Hydrogen bonds

Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?

• Water is an acid.

• Water is a versatile solvent.

• Water has a high heat capacity.

•  Water acts as a buffer.

Tags

NGSS.HS-ESS2-5

A scientist grew Chlorella, a single-celled photosynthetic algae, for three weeks in a laboratory culture. The culture medium contained dissolved carbon and other nutrients.

Scientists measured the beginning and the end of the three week period. Based on the results of the graph which nutriets were absent from the culture medium?

• phosphorus

• nitrogen

• oxygen

• sulfur

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1