7th Grade Q4 CSA Review

In the Punnett square shown, what must the genotype of the missing parent be?

• BB
• Bb
• bb
• Tt

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

B = brown fur  b = white fur
In the Punnett square, what is the probability for white fur? 

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What are the possible genotypes for this cross?
(Click the picture to see it without the text)

• TT = 25% Tt= 50% tt=25%
• all tall
• TT= 75% tt = 25%
• Tt = 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What is the dominant trait?

• yellow pea seeds
• green pea seeds
• there is no dominant seed
• Jolly green giant

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What genotype would go in box 3?

• BB
• Bb
• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What genotype would go in box 1?

• BB
• Bb
• bb

Tags

NGSS.HS-LS3-1

In 1500, between 60 million and 125 million American Bison roamed the plains. Native Americans used these bison as a primary food source, but this did not affect the total bison population. A few hundred years later, railroad crews and settlers moving west depended on bison for food. By 1829, it is estimated that less than 100 bison were left.

What were the two (2) main causes for the near extinction of the bison?

• Disease

• Overhunting

• Loss of habitat

• Starvation

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

Wherever civilizations have flourished, forests have been destroyed. Hundreds of years ago in England, rivers and seaports began to fill with silt after the forests were destroyed.

What caused the silt to fill the seaports?

• Irrigation

• Eutrophication

• Erosion

• Succession

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Five hundred flies of one species were sprayed with a new insecticide. Twenty-four hours later, nearly all the flies were dead. However, a few survived. Which scientific principle best explains why some flies survived?

• Animals adapt to new environments

• New species develop from survivors

• There is a variation among individuals within a species

• Insecticides may cause genetic mutations

Tags

NGSS.MS-LS4-4

Some organisms obtain energy for life processes by storing energy from the sun in chemical bonds. This process is called –

• Carbon Cycle

• Cellular respiration

• Photosynthesis

• Photon therapy

Tags

NGSS.MS-LS1-6