Biology 1308 Unit 5 Interactive

Xeriscape gardening is most effective when ______________.

• using primarily rocks and nonliving materials

• limiting the variety and quantity of plants

• grouping plants with similar water needs

Answer explanation

Correct. Grouping plants reduces watering requiremnets by limited plants with higher water needs to specific areas, enabling water in each area to onle the extent needed by that particular group. Increasing variety within each group enhances the beauty of the landscape and reduced the effect of species-specific predation or disease

Tags

NGSS.HS-ESS2-5

The purpose of xeriscaping is to maintain an attractive landscape while reducing ____________________.

• lawn maintenance

• cost

• water usage

Answer explanation

Correct. The development of xeriscaping was stimulated by a desire to use water resources wisely without sacrificing the beauty of a lush, green landscape.

Tags

NGSS.HS-ESS3-4

NGSS.HS-LS2-7

Which wavelength has the highest energy?

• Red

• Yellow

• Blue

• Violet

• Green

Answer explanation

Correct. The shorter the wavelength, the higher the energy.

Tags

NGSS.HS-PS4-1

Identify the color with the shortest wavelength.

• Red

• Yellow

• Blue

• Violet

• Green

Answer explanation

Correct. Violet light has the shortest wavelength.

Tags

NGSS.HS-PS4-1

Identify the color with the lowest energy.

• Red

• Yellow

• Blue

• Violet

• Green

Answer explanation

Correct. Red light has the longest wavelength so it has the least energy.

Tags

NGSS.HS-LS1-5

Which arrow indicates increasing wavelength?

• up arrow

• down arrow

Answer explanation

Correct. Wavelength increases from violet to red light.

Tags

NGSS.HS-PS4-1

Which arrow indicated increasing energy?

• up arrow

• down arrow

Answer explanation

Correct. The shorter the wavelength of light, the greater its energy.

Tags

NGSS.HS-LS1-5

The process that synthesizes ATP by utilizing energy released as hydrogen ions move down their concentration gradient is known as ________________.

• electron transport chain

• chemiosmosis

• photosynthesis

• a photosystem

Answer explanation

Correct. As electrons move from complex to complex in the thylakoid membrane, some of the energy released is used to pump hydrogen ions from the stroma into the thylakoid space, creating a strong proton concentration gradient. As the protons diffuse, the released energy is collected by ATP synthase to synthesize ATP. The scientist who first proposed this mechanism for ATP sythesis used the term "chemiosmosis" becuase chemical energy (in the for of an ATP bond) was produced using the energy of protons diffusing across a semi-permeable membrane in a manner similar to water movement by osmosis.

Tags

NGSS.HS-LS1-7

The function of the light-dependent reactions of photosynthesis is to synthesize ________________.

• ATP, NADPH, and oxygen 

• ATP and NADPH

• ATP and oxygen

• ATP

• NADPH

Answer explanation

Correct. The light dependent reations produce ATP and NADPH for use in the Calvin cycle. Although oxygen gas is a by-product of these reactions, its production is not necessary for synthesis of carbohydrates during the calvin cycle.

Tags

NGSS.HS-LS1-5

Calvin Cycle

i

h

g

f

e

d

c

b

a

carbon dioxide

Glucose

ATP

NADP+

NADPH

Thylakoid membrane

Stroma

Oxygen

water

Tags

NGSS.HS-LS1-5

NGSS.HS-LS1-6

NGSS.HS-LS2-5