Which best describes a role of enzymes?

providing high-energy molecules that fuel cell processes

changing one type of marcomolecule to another

supporting reactions involving energy transfer

making up support structures in cells and tissues

What energy transformation occurs from a person talking into a phone?

Which of the following is true of enzymes? a. An enzyme is consumed during a chemical reaction. b. An enzyme is converted to a product during a chemical reaction. c. An enzyme lowers the energy of activation required for a given reaction. d.

Match the following. 1. protons no charge 2. neutrons positive charge 3. electrons negative charge

It is crucial that the process of mitosis is error free. This is because otherwise healthy cells can grow into giant super cells. undergo meiosis. become cancer cells. produce two identical cells.

Name the four levels of group organization of living things in order of increasing complexity

Carbohydrates may form larger carbon-based macromolecules by combining with which elements? A. sodium, potassium, nitrogen B. nitrogen, sulfur, phosphorus C. potassium, sodium, sulfur D. silicon, phosphorus, sodium

This is a characteristic of minerals. It describes the mineral's resistance to fractures or scratches.

Neural signals from the spinal cord are transmitted to your stomach muscles by the

Which characteristic describes all organisms in the domain Eukarya? A. Their cells contain a nucleus B. Their cell nuclei lack DNA C. Their cell are prokaryotic D. Their cell wall contain peptidoglycan

What happens when an object in space moves towards us? light waves are compressed into higher frequencies O light waves are stretched into lower frequencies