Science Concepts Quiz

What is the difference between open-ended and closed questions?

• Open-ended questions allow for a variety of responses while closed questions have a limited set of possible responses.

• Open-ended questions have a specific answer while closed questions do not.

• Open-ended questions are used in surveys while closed questions are used in interviews.

• Open-ended questions are more objective while closed questions are more subjective.

Define independent variable and dependent variable in an experiment.

• The independent variable is the variable that is measured or observed to determine the effect of the dependent variable.

• The dependent variable is the variable that is manipulated or changed by the researcher.

• The independent variable is the variable that is not affected by the dependent variable.

• The independent variable is the variable that is manipulated or changed by the researcher, while the dependent variable is the variable that is measured or observed to determine the effect of the independent variable.

What is the structure of DNA?

• The structure of DNA is a single strand.

• The structure of DNA is a triple helix.

• The structure of DNA is a double helix.

• The structure of DNA is a spiral ladder.

What is the function of the nucleus in a cell?

• The function of the nucleus in a cell is to produce energy.

• The function of the nucleus in a cell is to transport nutrients.

• The function of the nucleus in a cell is to regulate cell division.

• The function of the nucleus in a cell is to control gene expression and store DNA.

Explain the process of DNA replication.

• DNA replication is the process by which a single-stranded DNA molecule is copied to produce two identical DNA molecules.

• DNA replication is the process by which RNA molecules are synthesized from a DNA template.

• DNA replication is the process by which DNA molecules are broken down into nucleotides.

• DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules.

What is the significance of making a claim, providing evidence, and using reasoning in scientific investigations?

• To waste time and resources.

• To make the investigation more complicated.

• To confuse and mislead other scientists.

• To establish the validity and reliability of scientific findings.

What are the different types of variables in scientific experiments?

• independent variables, dependent variables, and controlled variables

• experimental variables, observational variables, and fixed variables.

• active variables, passive variables, and regulated variables.

• manipulated variables, responding variables, and constant variables.

DNA is in the...

• Membrane
• Ribosome
• Chloroplast
• Nucleus

When Cells reproduce, they need to replicate their...

• sugar
• membrane
• DNA
• emotions

DNA Replication is the process of turning 1 DNA molecule into...

• 1 DNA molecule
• 2 DNA molecules
• 3 DNA molecules
• 4 DNA molecule