The plasma membrane is made up of: A. A double layer of cellulose B. A single layer of cellulose C. A double layer of protein D. A double layer of phospholipids

Which of the following if added to this sequence A-G-A-T-G-C-G-A-G-T-T-A-C-G-G might create an insertion mutation? A. a DNA molecule B. a fat molecule C. a sugar molecule D. an A, G, T, or C

How does that latitude and distance from a large body of water affect climate location?

According to the Shannon Diversity Index, which of the five blocks above, with each containing 36 squares, would show the greatest diversity? The different shades represent different species, and more squares of a shade represent higher abundance. A.

Which is caused by the suns energy? a.) earthquakes b.) weather c.) volcanic eruptions d.) mountain building

Many species of moss or algae may live on the bark of a tree the tree is completely unaffected and the moss or algae has a place to live

What is the salinity of ocean water

Which of the following could describe a population that is decreasing in size

Which creature cannot survive in the presence of oxygen? Give Examples. What does the creature need to survive instead of oxygen?

Why nitrogen must cycle through an ecosystem

How many cell types are present in your groups set of organisms?