What substance translates the genetic code? A. allele B. DNA C. RNA D. protein

Which of the following normally results from meiosis in a human cell that contains 46 chromosomes? A. an egg cell with 46 chromosomes B. a liver cell with 23 chromosomes C. a blood cell with 46 chromosomes D. a sperm cell with 23 chromosomes

Opponents of evolution argue that evolution is "just a theory." What does the word theory mean in a scientific perspective?

Tooth decay is prevented by the addition of what chemical to many municipal water supplies?

Which of the following happens at the conclusion of meiosis I? A) Homologous chromosomes are separated. B) The chromosome number per cell is conserved. C) Sister chromatids are separated. D) Four daughter cells are formed.

Humans have a complex multicellular body that is organized in a way that keeps you alive. Describe the relationships among organisms, body systems, organs, tissues, and cells, using examples from the human body.

Explain how the positions of earth, moon and sun affect the tides

Each gene in a cell's DNA codes for a specific protein. True of False

What is the correct definition of a species? A. A population of creatures who all look the same B. A population of creatures who are all the same size C. A population whose members are all the same color D.

Which of the following hormones increases smooth muscle contraction?

It is important to share data from scientific experiments with others. Which of the following methods is a valid way to present collected data?