Which macromolecule gives the most energy

carbohydrate

nucleic acid

lipid

protein

Why are cancer cells harmful

Unlike DNA, RNA A. contains nitrogenous bases. B. pairs uracil with adenosine instead of thymine. C. has deoxyribose as the sugar within its nucleotide components. D. contains two strands wrapped in a helix.

What is the difference between vascular and nonvascular plants? Circle the correct answer. A. presence of leaves B. need water in order to grow C. have systems for transporting water and minerals

In predation, the animal that is hunted and eaten is the?

Which of the following can affect the activity of an enzyme? 1. activation energy, reactants, and pH 2. proteins, regulatory molecules, and pH 3. temperature, pH, and regulatory molecules 4. temperature, lipids, and activation energy

The carbon cycle is a cycle among the carbon reservoirs. What is a carbon reservoir and what are some examples?

If thermohaline circulation were blocked, perhaps by plate tectonics, what would happen? Nothing would change. Global climate would be significantly affected. Coastal areas would warm up. There would be an increase in precipitation.

What is happening when the cells start to swell up with water?

What phase of mitosis occurs when the doubled chromosomes are pulled apart by the centrioles? A. Anaphase B. Interphase C. Metaphase D. Telophase

What system did Carlos Linnaeus contribute to the science of taxonomy? A:hierarchical classifications B:binomial thought C:monarchism D:name justification subject: Life science