xAP Bio Tri 1 Final Review #1

If the error bars shown here represented +/- 2SEx, what conclusion could be drawn about the comparison of samples B and C?

• The mean values are the same for both.

• The mean of BBB is larger than the mean of CCC.

• We cannot stay BBB and CCC are different.

• The mean of BBB is small than the mean of CCC.

1.  Which of the following encompasses all the others?

• ecosystem
• community
• population
• individual

Mutations are important because they bring about

• death of the organism in which they develop
• genetic variation needed for a population to evolve
• benefits for the individual, not for the population
• Hardey-Weinberg equilibrium within a population

Tags

NGSS.MS-LS4-4

Which of the following is the correct equation for PHOTOSYNTHESIS?

• 6CO₂ + 6H₂O --> 6O₂ + C₆H₁₂O₆
• 6CO₂ + C₆H₁₂O₆ + 6H₂O --> O₂ 
• 6O₂ + 6H₂O --> 6CO₂ + C₆H₁₂O₆
• C₆H₁₂O₆ + 6O₂ ---> 6H₂O + 6CO₂ 

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The following statement is a hypothesis formed about marsh grass: 
If the amount of nitrogen marsh grass receives is increased, then the height of the grass will increase, because nitrogen is an essential nutrient needed for marsh grass to grow.
What is the independent variable of the statement above? 

• Height of grass
• Amount of nitrogen
• Essential nutrient
• Amount of growth

Tags

NGSS.MS-LS1-5

__________ primary productivity is the total amount of energy that producers convert to chemical energy in organic molecules per unit of time.   

• Net
• Total
• Gross
• None of the above

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Water is polar because...

• The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
• The molecule has two poles, at which the it is colder than other regions of the molecule.
• The unequal sharing of electrons gives the water molecule a slight negative charge near its hydrogen atoms and a slight positive charge near its oxygen atom.
• The water molecule is neutral.

Large bodies of water do not quickly fluctuate in temperature. Why?

• Water is a solvent.
• Water has a high heat capacity.
• Water acts as a buffer.
• Water is non-polar.

Why do plants need to open stomata?

I. To get rid of excess CO₂

II. To allow transpiration

III. To exchange gases with the environment

• I only

• I and II only

• II and III only

• I, II and III

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension