Why do animal cells not have cell walls?

A dietitian examines the diet of a patient who is complaining that he is unable to build muscle mass. the patient eats mainly fresh fruits, vegetables, pasta, bread, and some facts and oils which type of supplement with the dietitian most likely

Francis gently combed through his hair and four hairs came out. Which is most likely the age of the four hairs?

Take the Global Trends Quiz. Click on "Answers" at the bottom of the quiz and check your work. What has been the trend in life expectancy in India from 1881 to present day?

Why arent algae and plants in the same kingdom?

The Moon's phase is waning when it changes from A. First quarter to a full moon B. Last Quarter to a new moon. C. First quarter to a new moon.

Which fossil would look most like an ancient organism? * trace cast mold?

Hydrogen is in column 1 of the periodic table What information does this give us? There is one other element that hydrogen will bond with There is one neutron in the nucleus.

Most plant must draw resources from two very different environments. Explain this statement?

When is facilitated diffusion necessary? a. When the molecules are too large. b. When the molecules are insoluble. c. When the direction of movement is opposite to natural diffusion. d. none of the above

G1, S, and G2 are all phases of which part of the cell cycle? a. interphase b. anaphase c. prophase d. telophase