AP Biology Unit 7 Review

In an experiment, the variable that changes in response to independent variable is known as

• Independent variable

• Dependent variable

• Changing variable

• Control variable

Tags

NGSS.MS-PS2-2

What is the standard error of the optimum soil temperature for germination rate?

• 1.78

• 0.91

• 2.89

• 5.34

Tags

NGSS.MS-LS1-5

What do the error bars in the graph say about data?

• The data for Group 1 has a lower mean value.

• The data for Group 2 has a higher degree of variability.

• The data for Group 1 has a higher degree of accuracy.

• The data for Group 1 and 2 has the same degree of coefficient of variation.

Which of the macromolecules below could be structural parts of the cell, enzymes, or involved in cell movement or communication?

• nucleic acids

• proteins

• lipids

• carbohydrates

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

The partial negative charge at one end of a water molecule is attracted to a partial positive charge of another water molecule. What is this type of attraction called?

• a polar covalent bond

• an ionic bond

• a hydration shell

• a hydrogen bond

The tremendous variation and unique properties of proteins are most likely a result of

• interactions between R groups of the amino acids

• hydrogen bonds lining amino acids

• the sequence of amino acids in the primary structure of the protein

• peptide bonds lining amino and carboxyl groups

An organic compound that is composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio is known as a

• lipid

• carbohydrate

• protein

• nucleic acid

If the pH of a solution is decreased from 7 to 6, it means that the concentration of

• H+ has decreased to 1/10 of what it was at pH 7

• H+ has increased 10 times what it was at pH 7

• OH- has increased 10 times what it was at pH 7

• OH- has increased by 1/7 of what it was

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.

Tags

NGSS.HS-ESS2-5

The fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid form

• less polar

• more polar

• less dense

• more dense