Viruses are considered non-living organisms because:

a. they contain dna

c. they contain rna

b. they cannot reproduce outside a living cell

d. they cause disease

How are producers able to produce food?

What structure do the cells of a maple tree and the cells of a beetle have in common

At the end of microbiology lab, you decide to practice your Gram-staining skills. The teaching assistant has no fresh cultures but says you may use a plate she prepared several weeks ago. You find the correct plate in the refrigerator (labeled B. s.

What are some similarities between autotrophs and heterotrophs?

Explain why earth is considered a closed system?

A white horse and a brown horse reproduce, which is the prominent gene

Why is it important to keep our water supply clean give 3 sentences?

From 2010 to 2011 the percentage of electricity generated from burning coal fell, while the percentage of renewable energy sources such as solar and hydroelectric went up.

When you chew food are you causing physical or chemical changes to the food

Which characteristic makes legumes a good food source for food-insecure populations? A. They are a source of protein. B. They are a source of fermented sugars. C. They are a source of cereal. D. They are a source of starchy carbohydrates