Which observation proves that a cell is a eukaryote?

A. The cell has a cell membrane.

B. The cell contains a nucleus.

C. The cell uses ribosomes to create protein.

D. The cell contains DNA

A P. Bursaria cell that has lost its zoochlorellae is aposymbiotic. If aposymbiotic cells have population growth rates the same as those of healthy, zoochlorella-containing P.

A lizard and bat have similar forlimbs which better adapt to theor different environment, but they are used in different ways this is evidence that supports the theory of evolution by means of A. Analogy B. Acquired characteristics C.

2. Describe the three layers which ocean water is divided based on temperature.

I heard that the seed become hard from air. the question is how does that happen?

He thinks he is good looking and smart and that any girl would be lucky to have him choose her to be his girlfriend. He knows that all girls are attracted to him. Brandon's example illustrates:

What does the lock-and-key mechanism refer to?

When is speciation complete? A. When the two populations can no longer interbreed B. When gene flow increases C. When an allele becomes fixed D. When part of the population has a new trait

How might a population change over 10 generations due to the environmental pressure of a predator hunting them? Why?

What disease affect the digestive system and the urinary, how?

What is different between gas giants and terrestrial planets in our solar system