Blog

(02.03A MC)Which of the following is not supported by the endosymbiotic theory?

(01.01 MC)A sports drink company develops a new product that is advertised to decrease soreness after rigorous exercise. Which of the following evidence of this claim would the scientific community accept as the most reliable?

(02.04 MC)The diagram below shows a cell placed in a solution.Only water is allowed to move in and out of the cell. What will most likely happen to the cell?

(02.03 MC)When plants wilt, their soft stems and leaves begin to droop. What is going on inside the plants’ cells that causes plants to droop like this?

(01.01 MC)Farmers want to release a non-native insect in the fields that feeds on weeds. Before they do this, they consult a team of scientists and ask them to conduct a study that will determine the insects’ effects on the farm land. What can you infer about why farmers need the information from this study?

(01.03 MC)The human GM-CSF gene and the mouse GM-CSF gene vary by more than 60% in their DNA sequence. However, when scientists place the human gene into mice, it functions properly. What best explains why this happens?

(02.03 MC)Which of the following organelles is found in both plant and animal cells?

(01.02 MC)Chemical reactions move at different speeds. When a chemical reaction is moving at a slow speed, what can be done to speed up the reaction?

(02.02 MC)Which of the following best explains how a scanning electron microscope is used to produce an image of a specimen?

(01.02A MC)What can you conclude about the advantage of the cell membrane being made up of phospholipids?