NC Biology EOC [2019 released]

Which is a primary function of a vacuole in a cell?

• enzyme production

• protein synthesis

• storage

• reproduction

Tags

NGSS.MS-LS1-2

What determines the function of a specialized cell?

• the type of RNA in the cell

• the number of ribosomes in the cell

• the number of chromosomes in the cell

• the active genes in the cell

Answer explanation

Remember specialized cells like skin cells, muscle cells, etc have the same DNA but different jobs b/c different genes are activated

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NGSS.HS-LS1-1

NGSS.HS-LS1-6

What will happen to the red blood cell in this environment?

• The size of the red blood cell will remain constant

• The red blood cell will swell at first and then shrink

• The red blood cell will swell from absorbing salt molecules

• The red blood cell will shrink from losing water molecules.

Answer explanation

Water moves from high to low. "Salt shrinks"

Tags

NGSS.HS-LS1-3

NGSS.HS-LS2-3

During which phase of the cell cycle does most cell growth occur?

• cytokinesis

• interphase

• prophase

• mitosis

Answer explanation

In interphase, the cell is preparing to divide.

What must happen for the carbon cycle to continue in this terrarium?

• All organisms must continue to exchange gases.

• The snails must double their production of carbon dioxide.

• The plant must produce carbon dioxide at a faster rate.

• The decomposers must begin to produce oxygen.

Answer explanation

It's a cycle. Everyone needs to contribute to stay stable!

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

In nature, which type of behavior causes animals to produce aggressive displays and sounds?

• imprinting

• territoriality

• conditioning

• habituation

Answer explanation

Remember if you get territorial, you're defending something

Tags

NGSS.MS-LS2-2

What will most likely occur if the population of the world continues to increase at predicted rates?

• There will be an increase in biodiversity as a result of improvements in technology.

• There will be more rapid depletion of natural resources.

• The human race will rapidly become extinct.

• All human diseases will be eliminated.

Answer explanation

Depletion means running out of.

Tags

NGSS.HS-ESS3-1

NGSS.HS-ESS3-5

What will most likely happen if a nonnative species is introduced into a stable ecosystem?

• The native species will change their diet, and the ecosystem will remain stable

• The native species will move to another area, and the ecosystem will remain stable.

• The native species will have to compete for resources with the nonnative species, and the ecosystem will become unbalanced.

• The native species will share their food with the introduced species, and the ecosystem will become unbalanced.

Answer explanation

non-native species are invasive and can take over

Tags

NGSS.HS-LS2-1

NGSS.HS-LS2-2

NGSS.HS-LS2-6

NGSS.HS-LS4-5

Why must DNA replication have to occur before a cell can divide by mitosis?

• to maintain the same number of chromosomes in the daughter cells as in the parent cell

• to cause one of the cells produced to have double the number of chromosomes as the parent cell

• to allow crossing over to occur in each of the cells produced

• to cause all of the cells produced to have half the number of chromosomes as the parent cell

Answer explanation

mitosis creates identical cells/clones meaning the daughter cells have the same number of chromosomes as the parent

Tags

NGSS.HS-LS1-4

A section of DNA has these bases: TAG CAG TAC

Which mRNA sequence is produced from this DNA section?

• ATC GTC ATG

• AUC GUC AUG

• AUG CUG AUC

• UTC GTC UTG

Answer explanation

Remember when transcribing into RNA, A-->U, T-->A, C-->G and G-->C

Tags

NGSS.HS-LS1-1