50 PTS!

List and describe the three challenges of life. (science)

Which of the following factors would have the least effect on the carrying capacity of an ecosystem? a. the total number of organisms b. the available water supply c. the available food supply d. competitive exclusion

Energy must be transformed in ecosystems because

Which stage of glucose metabolism produces the most atp?

What is anaerobic respiration? A. The process cells use to release energy from glucose when oxygen is not available B. Physical activity that increases heart and breathing rates C. Physical activity that decreases heart and breathing rates D.

When an artery in a person's brain becomes blocked or bursts open, we say that the person has experienced?

Ethanol is produced during what cycle or fermentation

Explain briefly why there is a limitation on how big a cell can be. Include in your explanation the relationship between a cell's size and its surface area and how this affects what the cell can do.

Which effect is most likely caused by nondisjunction during meiosis? A. an extra chromosome B. an increase in nuclei C. increased survival benefits from traits D. only two types of nitrogenous bases

A segment of dna that codes for rna and a protein is a

For older adults and previously inactive individuals, exercise intensity should fall closer to what percentage of the maximal heart rate?