Bio Sol Review

A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is the best conclusion for this experiment?

• Acid has no effect on the health of this type of plant.

• High acidity is helpful to this type of plant.

• Low acidity is harmful to this type of plant.

• High acidity is harmful to this type of plant.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant

• The amount of sunlight

• The type of music

• The type of liquid

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In this graph, what is the dependent variable? 

• Walla Walla Island

• Time

• Number of Deer

Tags

NGSS.HS-LS2-2

"This walrus doesn't look good, he must be sick." is an example of a(n)

• Qualitative Observation

• Quantitative Observation

• Inference

• Hypothesis

Tags

NGSS.HS-LS4-5

A macromolecule is found to have C, H, O, N, and S. Identify?

• Carbohydrate

• Lipid

• Nucleic Acid

• Protein

Answer explanation

All of the macromolecules have carbon (C), hydrogen (H), and oxygen (O). Nitrogen is found in proteins and nucleic acids. Sulfur is found in the R group of some amino acids. Proteins are the only macromolecule with C, H, O, N, and S.

A steroid is an example of a ​ (a)  

• Iipid

• protein

• carbohydrate

• nucleic acid

What is the main component of proteins?

• Nucleotides

• Amino acids

• Fatty acids

• Monosaccharides

Tags

DOK Level 2: Skill/Concept

A steroid is an example of ​a (a)  

• lipid

• protein

• nucleic acid

• carbohydrate

In the lab setup pictured above, a student is trying to determine the effect of pollutants on the growth of three groups of seeds. The results will not be valid because the experiment has no —

• conclusion

• hypothesis

• variable

• control

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Which of the following conclusions can be drawn from this graph?

• The optimum pH of the enzyme is 6.6.
  

• The optimum pH of the enzyme is 5.8
  

• The enzyme’s activity increases as pH increases 5.0 to 9.0
  

• The enzyme’s activity is greater around pH of 8.0 .