Three years ago there were only 60 lions living on a savannah in Africa. Now there are 120 lions living there. What must the lions do if their population continues to double every three years?

How is renewable fuel use expected to change in the next decade? a. It is expected to decrease. b. It is expected to increase. c. It is expected to fluctuate. d. It is expected to remain the same.

Which of the following is an effect of the increased burning of fossil fuels on the carbon cycle? * A. More carbon dioxide is absorbed by organisms. B. More carbon dioxide is absorbed by the atmosphere. C. More carbonates remain in fossil fuels. D.

Photosynthesis takes place in the membranes of small sacs called A) thylakoids B) grana C) photosystems D) photons

Paracrine hormones are eicosanoids that are produced by one group of cells but have their effect by binding to receptors on neighboring cells without circulating through the blood. A) True B) False

Plants share a most recent common ancestor with what group of protists?

1. If the sequence on a DNA molecule was CCTAG, the complementary sequence on the mRNA would be: GGAUC GGUTC GGATC UUATU

What is the chemical process for respiration A) releases APD B) releases energy C) releases oxygen D) releases glucose

Blood typing is an example of this where there is one gene but one gene can have several different characteristics

What did louis pasteur discovered by using a compound microscope?

What is transferred from one bacteria to the next