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A biologist discovers a new single-celled organism in a pond. To confirm it is a living organism, which of the following characteristics must it exhibit?

A pedigree chart shows a genetic disorder that is X-linked recessive. The mother is a carrier, and the father is not affected. What is the probability that their son will be affected with the disorder?

A person has one allele for a widow’s peak (W) and one allele for a straight hairline (w). The person has a widow’s peak. What is true about these alleles?

In the process of glycolysis, glucose is broken down, and a small amount of ATP is produced. The ATP is then used to power other reactions in the cell. What is the role of ATP in this process?

For centuries, people believed that living things could arise from non-living matter. For example, it was thought that maggots spontaneously appeared in rotting meat. What is the correct term for this now-disproven idea?

Carbon-14 is a radioactive isotope of carbon used in carbon dating. The number 14 refers to the total number of protons and neutrons in the atom’s nucleus. Given that the atomic number of carbon is 6, how many neutrons does carbon-14 have?

The element sodium (Na) has an atomic number of 11. How many protons are in a neutral atom of sodium?

In a eukaryotic cell, the process of cellular respiration begins with glycolysis, which takes place in the cytoplasm. What is the next stage and where does it take place?

Pure water has a pH of 7 at room temperature. What does this pH value represent on the pH scale?

In the oxygen gas molecule (O2​), two oxygen atoms are held together by a chemical bond. Both oxygen atoms have the same electronegativity, so they pull on the shared electrons with equal force. What type of bond do they form?