Which mutation occurs when one nucleotide base is replaced with another base?

True or false? Peptidoglycan is a polysaccharide found only in bacteria.

Now let's look at an example in a plant cell from a leaf. Use the slider to examine a plant cell before and after the plant was watered with very salty water. After watering with salt water, the plant wilted.

When viewing red blood cells under a microscope a scientist can determine they came from a human because they : ?

The scientific method proves things to be absolutely true. 1. False 2. True

What are the two main negative effects of commercial forest plantations?

How could decomposer ne add ed to the diagram whicb parts of the food web do they affect

There is two different genders, a male and female. what is a penis and why does it go into a vigina?

Which term describes a tiny, membrane-bound structure inside a eukaryotic cell?

Human activity has led to clear cutting of the world's rainforests. Which is the best explanation of why this change has been detrimental? A) Cutting down the rainforest disrupts some trading routes.

Which statement is true about fossils? A) There are more fossils in warm, wet tropical areas. B) No fossils resemble organisms that are presently alive. C) The oldest fossils are found in layers closest to the surface.