Why do some cells have more mitochondria than other

How is the circulation of a fetus different from the circulation of a baby answers?

The venom of a black widow spider is toxic to the:

A human cell in prophase of mitosis can be distinguished from a human cell in prophase i of meiosis by the presence of

What is the difference between the alleles of a gene?

10. Chemical changes result in new substances, but physical changes do not. Which process is an example of a chemical change? A. chopping a tree B. cooking a steak C. heating a cup of tea D. drying clothes in the dryer

A. what are the primary abiotic factors that will affect life underwater? b. Explain how the abiotic factors such as depth, Temperature, and some other mentioned in the questions before affect aquatic organisms.

What is a prokaryote, and when did prokaryotes arise?

Would it be cheating if i read these answers and write my own answers using my own words for assignments?

Why don't white tigers hibernate?

Cells with a higher surface area-to-volume ratio have a harder time with the exchange of material into and out of the cell. True or false?