Why do plants need sap

What type of relationship exists between the ants and the aphids

n 1665 Robert Hooke, an English scientist, published his book Micrographia, in which he described that pieces of cork viewed under the microscope presented small cavities similar to pores which were filled with air.

What organisms are capable of photosynthesis?

Select the correct answer from each drop-down menu. Sodium and potassium ions are essential for muscle contractions of the heart. The ions are transported using a pump, which obtains energy by the breaking of.

In bacteria, conjugation, transduction, mutations, and relatively short generation times all contribute to which of the following? A; Cloning B: Extinction C: Sexual reproduction D:Genetic diversity

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

Match these terms and definitions.! 1. forms the pole of the spindle apparatus 2. the membrane that surrounds the nucleus of the cell 3. having chromosomes that occur singly, not in matched sets or pairs 4.