(02.02 MC)In 1838, Matthias Schleiden published his observation that plant tissues are composed of cells. A year later, Theodor Schwann published evidence that animal tissues were composed of cells. Which part of the cell theory is directly supported by the work of Schleiden and Schwann?

(01.02 MC)Sucrose and lactose are two carbohydrates that have the same molecular formula (C12H22O11). Which of the following describes why sucrose and lactose have different properties?

(02.02 LC)The transmission electron microscope is most useful for

(03.07 MC)In humans, the allele for a widow’s peak is dominant to the allele for a straight hairline. In a family with three children, two of the children have a straight hairline and one child has a widow’s peak. Which of the following is possible?

(02.05 MC)Which of the following is a reactant of cellular respiration?

(01.01 LC)A farmer is trying to determine why some weeds sprayed with weed killer do not die. To begin a scientific investigation of this issue, what would be the first step for the farmer?

(02.06 LC)Which of the following correctly identifies the reactants and products of aerobic cellular respiration?

(02.04 MC)One cell has more mitochondria than the other. How would having more mitochondria affect the cell’s function?

(02.01 MC)Which of the following best describes what causes water molecules to exhibit properties such as cohesive and adhesive behavior?

(01.01 HC)In a magazine advertisement, a manufacturer claims its laundry ball, which contains ceramic pellets, gets clothes clean by changing the pH of the water. The ad claims the product reduces wear on their clothing, contaminants in the environment, and the cost of doing laundry. What should the advertisement include to give a consumer more confidence in this product’s claims?