Unlike the cell membrane, the cell wall is A) a rigid structure B) composed of a lipid bilayer C) found in all organisms D) selectively permeable

Which polysaccharide is usually found in the cell wall of fungi? starch glycogen chitin cellulose

Due to its system of nine air sacs connected to the lungs, the respiratory system of birds is arguably the most effective respiratory system of all air-breathers.

Does not eat any animal foods and consumes only plant products

Describe sister chromatids

There is a definite place at which the brain begins and the spinal cord ends

Which vitamin does the human skin synthesize from the Sun's ultraviolet light?

Since dinosaurs cannot swim how can a fossil be found on all continents

Four different segments of a DNA molecule are represented below

Why is the action of phagocytes considered a nonspecific response? A It does not occur at any specific temperature. B It is not involved with the production of any specific type of lymphocyte. C It does not respond to any specific type of hormone.

Which statement best describes the relationship between the deer and the plants?