How did the first cells get there energy

Organelles and other cellular material are held inside the cell by which of the following? A. cellular membrane B. nucleus C. mitochondria D. endoplasmic reticulum

Water-soluble hormones bind to plasma membrane receptors, which initiate a signal transduction pathway with which of the following processes? Check all that apply.

What happens if people keep killing sharks and who wants to stop it and how may do we kill a year

Explain how the amount of eumelanin and number of melanosomes difference between a person with lighter color skin and a person with darker color skin

MORE THAN ONE Select all of the following that are advantages of tidal energy. A. No greenhouse gases are produced. B. It is a renewable source of energy. C. It can only be installed along coastlines. D.

Is a glacier nothing more than a huge mineral flowing downhill? Be sure to defend your answer with facts.

Natural selection works on the phenotype, rather than genotype, what best explains the reason for this

Organism Reproduction Tools Mitosis is a type of cell division that produces cells that are used for growth and repair. Meiosis is a different type of cell division that produces sex cells used for sexual reproduction.

In a scientific experiment, a is any factor that can change or be changed

During winter in the Northern Hemisphere, A. the Sun rises earlier and sets later than during other seasons. B. the Sun appears lower in the sky than during other seasons. C.