Which statement is true about two atoms of carbon that have the same number of neutrons? A. They are the same isotope. B. They have a different number of protons. C. They have different number of neutrons. D. Their atomic numbers are different.

If carbon dioxide and water were abundantly available to a heterotrophic prokaryotic cell, would it be possible for the cell to use them as a food source? 1:sunlight would be needed for the reaction to occur, so they would not be a food source.

Crossing over normally takes place during which processes?

Which of the following correctly lists the structures through which sound travels after entering the ear? a. auditory canal, eardrum, ossicles, cochlea b. ossicles, eardrum, cochlea, auditory canal c. eardrum, auditory canal, ossicles, cochlea d.

The body's reaction to information is to send these to the brain

What best explains the circulation system within mammals

Where does food go after it leaves the small intestine?

How does the Sun contribute to physical weathering? A. When water is heated, it expands, which causes rocks to break. B. Minerals in rocks heat and expand at different rates, which causes rocks to break. C.

A phylogenetic tree shows that birds and crocodiles share many features. A hypothesis based on this tree predicts that these features are present in a common ancestor. Which of these predicted traits is supported by fossil evidence?

Imagine that you are talking with one of your friends about your biology course. He states that the somatic nervous system is subdivided into sympathetic and parasympathetic components, and is responsible for involuntary responses.

In both American cotton (Gossypium hirsutum) and Egyptian cotton (G. barbadense) petal spot is a dominant character over no petal spot.