What is a scientific theory?

A law that is always true

A hypothesis about nature

An educated guess based on observations

An explanation of how the natural world works

What is the best definition of a eukaryotic cell? A. has an internal structure consisting of a membrane-bound nucleus and membrane-bound organelles B. has an internal structure with the genetic material in the form of a nucleoid C.

A 50-year-old presents with hypotension, hypoxemia, and tracheal deviation to the left. tests reveal that the air pressure in the pleural cavity exceeds barometric pressure in the atmosphere.

How are the carbon, oxygen, and nitrogen cycles vital to sustaining life on Earth? a. Carbon, oxygen, and nitrogen are vital components of life on Earth. b.

what effect do you expect the structural differences between prokaryotes and eukaryotes to have on their functions? Explain in detail.

Chemical reactions that release energy?

Example and description of the gnetophyta

Does fusion take place in the suns core

What kinds of mutations can be inherited and which cannot?

Which features of the ocean floor are found in the open ocean? Check all that apply.

Glucose is a building block of starch. Which of the following best describes glucose? protein O nucleotide lipid carbohydrate