(01.01 LC)Which scenario represents a scientific investigation?

(02.05 MC)While the average human is able to hold his or her breath for approximately one minute, a whale can dive for over 30 minutes without returning to the surface. Which of the following correctly describes this difference?

(03.06 MC)The principle of dominance is derived from Mendel’s conclusions. Which of the follow describes the law of segregation? Some alleles of a gene are dominant, and others are recessive. If the recessive allele appears on one of the genes, the offspring will display the trait. Both dominant alleles need to be present for the offspring to inherit the dominant trait.

(01.03 MC)Which of the following best describes how the first organic molecules on the early Earth may have been formed?

(02.06 LC)Which of the following correctly identifies the main function of photosynthesis?

(01.03 MC)The most significant outcome of the Miller and Urey experiments was that they

(02.02 MC)How does the use of a scanning electron microscope differ from that of a transmission electron microscope?

(02.01 MC)As liquid water freezes, the molecules arrange themselves in a way that takes up more space than liquid water. What would most likely occur if the arrangement of frozen water molecules required less space than that of liquid water molecules?

(01.02A MC)Based on what you know about life on Earth, what might scientists be most likely to look for on other planets with regard to living organisms?

(01.02A MC)All proteins have amino acids as their building blocks. Even though there are only 20 amino acids, there are more than a million different proteins, and each works in a unique way. Which of the following conclusions about a protein’s function is best supported by this information?