Middle School Science Praxis

Why is DNA important?

• it is very small and very complicated

• it's in everything

• it serves as the blueprint for traits of all living things

• because we eat it every day for energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which shows the correct complementary base pairing for DNA?

• C-A, T-G

• A-G, C-T

• C-G, U-A

• T-A, G-C

What does DNA stand for?

• Deoxyribonucleic acid

• Denitrogenous acid

• Deribonucleic acid

• Diribonucleic acid

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases

• the order (sequence) of the nitrogen bases

• the color of the nitrogen bases

• the frequency (number) of nitrogen bases

Tags

NGSS.HS-LS1-1

Which of the following best defines science?

• A collection of unchangeable facts about the natural world

• The study of the natural world through observation, identification, description, experimental investigation, and theoretical explanations

• A belief system based on assumptions about the natural world

• A method for proving theories beyond doubt

Tags

DOK Level 1: Recall

In a scientific experiment, what is the dependent variable?

• The variable that is manipulated by the researcher

• The variable that is kept constant throughout the experiment

• The variable that is measured to see how it is affected

• The hypothesis of the experiment

Tags

DOK Level 1: Recall

What role does a hypothesis play in a scientific experiment?

• It provides a conclusion based on the experiment's results.

• It acts as a statement that can be tested by further investigation.

• It summarizes the data collected in the experiment.

• It ensures the experiment is conducted fairly.

Tags

DOK Level 2: Skill/Concept

What is the role of evidence in modifying scientific theories?

• Evidence is rarely considered when modifying theories.

• Evidence can refute or support theories, leading to modifications.

• Theories are modified first, then evidence is found to support the changes.

• Evidence is only used to confirm existing theories, not modify them.

Tags

DOK Level 3: Strategic Thinking

What is the significance of having a large sample size in experiments?

• It decreases the validity of the results.

• It increases the chance of a safer experiment.

• It enhances the reliability of the results by reducing the impact of outliers.

• It makes the experiment less time-consuming.

Tags

DOK Level 2: Skill/Concept

What is a common method for scientists to communicate their research findings?

• Through artistic performances

• By publishing in scientific journals

• By creating infomercials

• Through political debates

Tags

DOK Level 1: Recall