DNA, the genetic blueprint of life, has a double helix structure. What type of chemical bonds are responsible for holding the two strands of the double helix together?

A plant uses light energy to convert carbon dioxide and water into glucose. What can be said about this process?

All living organisms, from single-celled bacteria to multicellular elephants, are made of one or more cells. The cell is the basic unit of life. Which of the following principles of the cell theory does this statement describe?

Jams and jellies have a high sugar concentration, which helps to preserve them. Why is this high sugar concentration effective at preventing the growth of molds and bacteria?

During meiosis I, homologous chromosomes are paired up and align at the metaphase plate, and then are separated and pulled to opposite poles of the cell. What two phases are being described in this process?

The enzyme isocitrate dehydrogenase in the Krebs cycle requires the molecule NAD+ to function properly. NAD+ carries electrons from one molecule to another, which is essential for the enzyme’s function. What is NAD+ in this scenario?

A pedigree chart shows a genetic disorder that is autosomal recessive. The parents are both carriers (heterozygous). What is the probability that their child will be affected with the disorder?

What is a major difference in the role of electrons in cellular respiration and photosynthesis?

When a cheetah chases a gazelle, the cheetah is using energy to run. What type of energy is represented by the running?

A student is testing whether the color of light affects the growth of a plant. He places one plant under red light, one under blue light, and one under white light. He waters all three plants with the same amount of water and keeps them at the same temperature. What are the independent and control variables in this experiment?