Final exam review

In an experiment investigating the effect of a new fertilizer on corn growth, where Group A receives fertilizer and Group B receives plain water, which of the following is the independent variable?

• Corn plant height

• Amount of fertilizer

• Soil type

• Amount of water

• Temperature

Tags

NGSS.MS-LS2-1

Continuing from the previous question, what is the role of Group B (receiving plain water) in this experiment?

• It is the experimental group.

• It is the dependent variable.

• It serves as the control group.

• It is the independent variable.

• It is the hypothesis.

Tags

NGSS.MS-PS2-5

A testable explanation for an observation is called a:

• Prediction

• Experiment

• Dependent variable

• Hypothesis

• Controlled variable

Tags

NGSS.HS-PS1-2

Which type of bond involves the unequal sharing of valence electrons, resulting in partial positive and partial negative charges on atoms?

• Ionic bond

• Nonpolar covalent bond

• Hydrogen bond

• Polar covalent bond

• Metallic bond

The property of water where water molecules are attracted to other water molecules is known as:

• Adhesion

• Capillary action

• Cohesion

• Surface tension

• Hydrophobicity

Tags

NGSS.HS-ESS2-5

Choose the best answer for each question. II. Chapter 2 – Molecules of Life 6. Carbon's ability to form four stable covalent bonds allows it to:

• Participate only in ionic interactions.

• Form long, complex chains and rings, which are the basis of organic molecules.

• Act primarily as an electron acceptor.

• Only form single bonds.

• Dissolve readily in nonpolar solvents.

A plant cell is placed into a solution, and its plasma membrane pulls away from the cell wall. This indicates that the surrounding solution is:

• Hypotonic

• Isotonic

• Hypertonic

• Neutral

• Buffering

Which of the following processes requires ATP and moves substances against their concentration gradient?

• Simple diffusion

• Facilitated diffusion

• Osmosis

• Active transport

• Membrane diffusion

Which organelle is responsible for generating the majority of a eukaryotic cell's ATP through cellular respiration?

• Chloroplast

• Endoplasmic Reticulum

• Golgi Apparatus

• Mitochondrion

• Lysosome

Tags

NGSS.HS-LS1-7

A key difference between prokaryotic and eukaryotic cells is that eukaryotic cells possess:

• A cell membrane

• Ribosomes

• A nucleus

• Cytoplasm

• DNA