NC Biology EOC

This diagram shows a Paramecium, a unicellular protist. When a chemical is added to the pond water in which the Paramecium lives, the Paramecium stops moving. Which structure is most likely affected?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

During translation, what does the tRNA deliver to the ribosomes?

• amino acids

• DNA

• mRNA

• proteins

Which will most likely cause an increase in the frequency of genetic mutations in humans?

• increased exposure to mold spores in the air

• increased exposure to rising levels of atmospheric CO₂

• increased exposure to bacteria in drinking water

• increased exposure to X-rays

Tags

NGSS.HS-LS3-2

Salivary amylase is an enzyme in humans that breaks down starches. What substance would humans have difficulty digesting with this enzyme?

• lipids

• nucleic acids

• proteins

• carbohydrates

What is the term used to describe the movement of alleles between populations?

• Genetic drift

• Gene flow

• Natural selection

• Mutation

A contractile vacuole helps protists eliminate excess liquid. This is a "pumping" process which reduces pressure inside the cell and prevents the cell from bursting. What is most likely the source of energy for this process?

• DNA

• lipids

• ATP

• ribosomes

Tags

NGSS.MS-LS1-6

What do both prokaryotic and eukaryotic cells contain?

• membrane-bound organelles

• linear chromosomes

• cytoplasm

• a nucleus

Which of these cells in the human body is specialized to transport oxygen throughout the body?

• 
• 
• 
• 

Which molecules are joined together to make proteins?

• fatty acids

• nucleic acids

• amino acids

• acetic acids

Tags

NGSS.HS-LS1-1

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