Which of the following is true of eukaryotes but not of prokaryotes?

A they must be multicellular

B they must contain a nucleus

C they are always single celled

D they do not have membrane bound organelles

Did you ever find a four leaf clover?

The energy consumed by organisms remains constant at all trophic levels. a. True b. False

How would the health of an organ be affected if many of its cells were damaged? Give reasons to support your answer.

Describe two conditions necessary for a chemical reaction to occur

Explain one likely reason why the wolf population rapidly increased

Natural selection acts on populations of living things, usually through a specific trait. Which statement must be true about that trait? Question 6 options: The trait is resistant to mutations.

When does the blastocyst form? A. A few days after fertilization B. At the end of the first trimester C. In the second trimester D. At the end of the third trimester

How does meiosis differ in males and females

Allergic reactions are most closely associated with

Choose the correct response of Congress toward Lincoln's Reconstruction plan of forgive and forget. A. It passed the Johnson-Sherman bill. B. Congress tried to impeach Lincoln. C. It passed the Wade-Davis bill. D.