Some organisms living in a vacant lot include grass, dandelions, mice, grasshoppers, and slugs. Collectively these organisms represent

(A) an ecosystem.

(B) a community.

(C) a population.

(D) a mutualism.

(E) a biome

Ways that computers can assist scientist in their work

Difference between diabetes mellitus and diabetes inspidus?

Suppose a scientist working on a new drug for cancer developed a chemical that irreversibly breaks the hydrogen bonds in the dna molecules within cancerous cells but leaves all of the covalent bonds intact.

What structures allow the kidneys to remove cellular waste from blood?

What do you know about a chemical compound by looking at its formula

Regarding regulation of the ara operon, what would be the effect of a mutation that removes the part of the AraC protein that binds to RNA Polymerase? a. Transcription would not occur at high levels in either the presence or absence of arabinose. b.

Cnidaria and flatworms exchange gases and remove wastes by way of their: A) open circulatory systems. B) closed circulatory systems. C) gastrovascular cavities. D) moist skin surfaces. E) respiratory and excretory systems.

Immunofluorescence microscopy A. Can be used to map the location of specific macromolecules in cells. B. Can be performed with a standard light microscope. C. Can yield resolution approaching that of the electron microscope. D.

Which statements describe functions of antibodies? Check all that apply. They maintain the cell's shape. They regulate cell processes. They protect the body from infectious agents. They signal the immune system to destroy pathogens.

Which event results in massive flooding? a landslide an earthquake a tornado a tsunami