What is a pheromone?

a chemical used with the members of the same species to communicate over a distance

any behavior or stimulus, not just odor, that inititates reproductive activity

any chemical that causes strong attraction or repulsion

Has indefinite shape and volume

Which classes of antibodies is most likely to be made by the oldest plasma cell in a population of b cells?

What is the function of the cell wall?

You study a bacterium that grows in very low-nutrient aqueous environments. Which type of transport mechanism is required to deliver nutrients from these environments where they are at lower concentration than inside the cell? A. aquaporins B.

Facts about freshwater

A nurse is teaching a client about the normal pathway followed during the cardiac cycle. in which sequence should the nurse list the structures, beginning with the first

Chronic Myelogenous Leukemia (CML) is a type of cancer that is caused by a specific chromosomal alteration that leads to the inappropriate expression of a kinase called Abl.

In pea plants, the allele for yellow seeds is dominant to the allele for green seeds. If a plant that has heterozygous yellow seed is crossed with one that has only homozygous green seeds, what percent of their first generation offspring would you

Which portion of the respiratory tract is commonly referred to as the "throat"?

Anne applies a force on a toy car and makes it move forward. What can be said about the forces acting on the toy car at the moment Anne applies the force? The forces acting on the toy car are. A: Balanced B: Unbalanced C: Equal