NC Biology Standards

Which best summarizes the role of DNA in the production of proteins?

• DNA moves to the cytoplasm to build proteins

• DNA transports amino acids to the ribosomes to make proteins

• DNA contains the instructions used to make proteins

• DNA breaks hydrogen bonds between amino acids

Tags

NGSS.MS-LS3-1

These diagrams show a variety of cells from the same organism. How can cells from the same organism have such different shapes and functions?

• As each cell differentiates, the DNA changes so that each type of cell has different DNA once it reaches maturity.

• Mutations in the cells' nuclei lead to new combinations of DNA, resulting in different shapes and functions in the different types of cells.

• During differentiation, different parts of the DNA in each type of cell are activated, resulting in the different structure and function of the cells.

• During differentiation, different types of cells produce proteins which destroy the nonactive DNA, leading to cell specialization.

Tags

NGSS.MS-LS1-2

The chemical colchicine disrupts cell division. Which cell process would most likely stop if colchicine were added to a culture of human liver cells?

• mitosis

• meiosis

• crossing over

• active transport

Tags

NGSS.HS-LS1-4

Which effect could a mutation in mRNA have on the production of proteins?

• The protein produced will have a different identity.

• The protein produced will have a coiled shape.

• The protein produced will produce excess nitrogen.

• The protein produced will produce excess water.

Tags

NGSS.MS-LS3-1

What is the primary function of the cell membrane?

• To provide structural support

• To control the movement of substances in and out of the cell

• To store nutrients

• To produce energy

What carries the instructions for making amino acids in a protein?

• the nitrogen base on the tRNA

• the hydrogen bonding between nitrogen bases

• the sequence of nitrogen bases on the mRNA

• the nitrogen base bonding on the DNA molecule

Tags

NGSS.HS-LS1-1

Which word equation best represents the process of cellular respiration?

• carbon dioxide + glucose --> oxygen + water

• carbon dioxide + water --> glucose + oxygen

• glucose + oxygen ---> carbon dioxide + water

• oxygen + water ---> carbon dioxide + glucose

Tags

NGSS.MS-LS1-7

A student noticed that the freshwater plant, Elodea, produced bubbles when placed in direct light. What could the student most likely conclude?

• Bubbles of carbon dioxide were produced as a result of photosynthesis.

• Bubbles of oxygen were produced as a result of photosynthesis.

• Bubbles of carbon dioxide were produced as a result of cellular respiration

• Bubbles of oxygen were produced as a a result of cellular respiration

Tags

NGSS.MS-LS1-6

Plant cells are able to produce their own food. This process happens in which structure?

• cell wall

• chloroplast

• mitochondrion

• vacuole

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-6

Which statement best explains how sweating during exercise maintains homeostasis?

• It regulates mineral concentrations in cells.

• It regulates body temperature.

• It maintains water balance.

• It maintains sugar balance in cells.