Which observation proves that a cell is eukaryote

A) it has organelles enclosed in membranes

B) it has a cytoskeleton

C) it has a cell membrane

D) it has organelles floating in cytosol

The diagram shows Neil's bouts model of an atom. What happens when the electron moves from the first level to the second energy level?

2. How do each of the three eggs placed in solution compare to the control egg?

How does the circulatory system work at the organ level? O Blood cells carry nutrients. O Cardiac muscle contracts. O The heart pumps the blood O Nutrients are delivered throughout the body.

What are the two main categories of ecosystems? a. effective and ineffective b. marine and freshwater c. biotic and abiotic d. aquatic and terrestrial

My homework says chicken has more protein carrots, what dors that mean?

Which of the following is not a phase of gastric secretion? A. cephalic B. gastric C. intestinal D. enterogastric

How are biomes related to ecosystems?

What is the term for the flexible material that forms the structure of the ear? A. Cartilage B. Obliques C. Spongy tissue D. Osteoblast

Suppose you remove your test cultures from the incubator and notice that one of them-a known fermenter-has a gas bubble in the Durham tube. Knowing that fermenters frequently produce gas, you ignore the bubble and proceed to the next step.

In peas, yellow seed color (y) is dominant to green seed color (y). which describes an organism that has nonidentical alleles for seed color? yy and has green seeds yy and has yellow seeds yy and has yellow seeds yy and has green seeds