Allergies are the most common type of immune system disorder. Describe an allergic reacion and explain why it may be harmful. (5 marks)

The outermost tissue layer of a cnidarian is the a. ectoderm. c. endoderm. b. mesoglea.

Propose a hypothesis to account for the data related to the cell life spans of the lining of the esophagus, small intestine, and large intestine.

What structure holds the individual chromatids together?

Which has greater thermal energy a pot of water or a cup of water? Support your claim

What is the overall structure of the DNA molecule?

After digestion and absorption which circulatory system carries fat and fat-soluble vitamins

Describe a reason that ecosystem stability is important to the life forms in the ecosystem, and then describe why stability in one ecosystem is important for stability in an adjoining one

Which part of a seed grows into a root and which plant part acts as a protective covering for a seed during seed dormancy? The part of a seed grows into a root and the acts as a protective covering for a seed during seed dormancy.

Hemophilia is caused by several genetic factors; one, a recessive allele of an x - linked gene, is the subject of this problem. assume that a man with hemophilia marries a normal woman whose father had hemophilia.

How do popular psychology and scientific psychology differ