Food molecules such as proteins cannot be absorbed unless they are digested.

Give one reason why.

Why are central vacuole, cell wall and chloroplast only found in plant cell?

Which of these is the correct sequence for the phases of mitosis? prophase, interphase, metaphase, telophase prophase, metaphase, telophase, anaphase prophase, metaphase, anaphase, telophase interphase, prophase; metaphase, anaphase

What hormone stimulates the gallbladder to contract and release bile into the duodenum?

Half the distance between a wave's crest and trough. A. amplitude B. crest C. electromagnetic radiation D. frequency E. longitudinal waves F. sound waves G. surface waves H. transverse waves I trough J. wavelength

Why is syndrome not labeled as a genetic disease?

To do this, they needed to acquire a very special internal organelle, called the chloroplast. Where did they acquire this internal organelle? (hint: it's the same place we got our mitochondria)

Which way do people look when they lie?

Type of sugar found in DNA?

What is an abiotic factor that would affect the ability of a species of tree?

Given that the cytoplasmic membrane has a fluid dynamic nature, with phospholipids and proteins able to move about within the bilayer structure, what force or structure keeps the membrane from falling apart?