CLEP Biology | 202 Questions with 100% correct Answers | Verified

What is the key limiting factor on cell size? - The size of a cell is limited by the ratio of its surface area to volume. A cell will only remain stable if... - ...the surface area of the plasma membrane maintains a balance with the volume of the cytoplasm. The salivary gland... - ...secretes saliva which enters the digestive tract and aids the digestive process. Gregor Medel - Studied the relationships between traits expressed in parents and offspring and the genes that caused the traits to be expressed. In order to become an established part of an island ecosystem there must be... - ...a populations large enough to ensure successful reproduction, a food source, a suitable habitat, and a source of moisture. Lymphocytes - Are cells involved in immunity and are produced in bone marrow as stem cells. B Cells - Produce antibodies into the bloodstream that find and attach themselves to foreign antigens (toxins, bacteria). T Cells - Some patrol the blood for antigens, but are also equipped to destroy antigens. They may regulate immune responses as well. Mass extinctions promote diversification... - ...because ecological niches open up, making conditions favorable for the establishment of new, diverse species. Common elements found in proteins are - Carbon, Hydrogen, Oxygen, and Nitrogen What phylum are snakes in? - Chordata