(03.07 MC)Sickle cell anemia is a recessive disorder that is only expressed if inherited from which of the following?

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

(03.05 MC)Some organisms can reproduce both sexually and asexually. Which of the following is a long-term consequence of undergoing only asexual reproduction?

(01.01 HC)Several groups of researchers conducted experiments to study how students’ diets affected their performance in school. Researchers asked students to record what they ate every day for a year. The findings suggested that students who ate a higher amount of vegetables as compared to protein tended to have better grades. What can the researchers validly claim based on these findings?

(02.01 MC)Which statement correctly compares the pH of water to that of other substances?

(02.02 MC)How does the resolution of a specimen’s image viewed under a compound light microscope compare to that of a scanning electron microscope?

(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?