Dna is double stranded and similar in structure to a twisted rope latter composed of nitrogenous bases paired with hydrogen bonds in what order?

Which of these are a compound? A. Oxygen C. an element B. water D. air

One function of a plant's seed is to (1) perform photosynthesis (2) provide food for early development (3) decompose dead organisms or (4) reproduce sexually?

In wild, tigers eat all parts of their prey. Including bones. In zoos they develop bone problems when they are fed only flesh? Why?

Which best describes the process of peer review? A. Scientists examine each other's work to make sure it is not biased or unreliable. O B. Scientists prevent other scientists from seeing their experimental data C.

Fertilization of egg cell

How do scientists obtain knowledge about the world? Check all that apply.

What would the temperature of the surface be if the Earth did not have an atmosphere?

How would the lack of water affect cellular respiration?

Different types of normal tissues in the human body have different mitotic indices. From the following list, which normal tissues would you expect to have the highest mitotic index: muscle, skin, kidney, or lung? Explain your answer.

A group of scientists decided to post their research results on the Internet instead of publishing in a scientific journal. What part of the scientific process have they skipped and why does it matter?