Which is true? A. All organisms obtain water through food B. some substances must be dissolved in water before they can be used C. water s important to some organisms D. plant cells are unaffected when water is scarce

An example of simple multicellularity is found in

A galaxy that has an undefined shape is best classified as an?

Where does subduction occur? A. at hot spots B. at mid-ocean ridges C. at continental shelves D. at deep ocean trenches

What is the immediate result of a plant's egg and sperm combining? a. sperm cells b. egg cell c. an zygote d. spores An zygote?

Which microscope would be most useful for examining the contours of the surface of a bacteria cell?

Which of the following correctly describes a plant structure and how it aids in the process of cellular respiration? A. roots - collects water required for cellular respiration B. mitochondria - the site of cellular respiration C.

Why would a lab technician choose a bacterial artificial chromosome for cloning a gene rather than a plasmid?

What type of molecule that can be found in living things lacks carbon atoms

The major weakness of the job descriptive index (jdi) is that

What word refers to traces of an organism that existed in the past?