NC Biology

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.HS-LS1-1

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

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NGSS.HS-LS1-5

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

• cell wall

• chloroplast

• mitochondrion

• vacuole

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NGSS.HS-LS1-5

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.

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NGSS.HS-LS1-4

Nucleic acids

• Proteins

• Carbohydrates

• Lipids

• DNA and RNA

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which of the following is NOT a common function of ncRNAs?

• Scaffold

• Transport

• Guide

• Ribozyme

The autonomic nervous system is a branch of your (a)   nervous system.

• central

• peripheral

Answer explanation

The autonomic nervous system is part of the peripheral nervous system, which controls involuntary bodily functions. The central nervous system consists of the brain and spinal cord, while the peripheral system includes all other neural elements.

What is the primary function of a decoy ncRNA?

• To block protein synthesis

• To guide molecules to specific locations in the cell

• To recognize other ncRNAs and prevent them from functioning

• To catalyze biochemical reactions

What is the key difference between a blocker and a decoy ncRNA?

• Blocker ncRNAs bind to proteins, while decoy ncRNAs bind to RNA molecules
  

• Blocker ncRNAs prevent cellular processes, while decoy ncRNAs guide molecules

• Blocker ncRNAs bind to molecules, while decoy ncRNAs bind to other ncRNAs

• Blocker ncRNAs catalyze reactions, while decoy ncRNAs alter protein stability

Which number contains the nucleic acid?

• 1

• 2

• 3