Which type of stem cell is described below?

stem cells are available from a variety of sources, including blood from an umbilical cord, or cells in the

placenta, the bone marrow, and even human fat.

Humans possess several characteristics that, when taken together, differentiate them from other organisms. these characteristics includ

A soybean farmer applies a pesticide to his crops each year. after several years, he notices that the pesticide seems to have less of an effect on the insects. the population of insects is now more resistant to the pesticide.

two body parts that are physically similar but have different functions in different species are called?

Which of the following best describes succession? Question 1 options: The evolution of species through natural selection to becomes different species over time. All of these are good descriptions of succession.

Michelle goes to her dentist and, after having a couple of cavities filled, her dentist strongly suggests that she reduce her intake of sodas and increase her intake of calcium phosphates in the foods she eats. Why

4. During what phase do centrioles begin to migrate to opposite poles of the cell?

Are made of long chains of amino acids

Maria is testing the behavior of monkeys. First, she shows the monkey a rectangle. Then she shows the monkey a rectangle and a cylinder. If the monkey pushes aside the rectangle, Maria gives the monkey a food reward.

Why is the phloem in a leaf important to the roots of a plant? A. It provides the roots with carbohydrates. B. It provides the roots with nutrients from the soil. C. It transports water to the leaves from the roots. D.

A mutation causing an addition or a deletion of one base pair resulted in the production of a nonfunctional mutant protein. The sequences of the normal and mutant proteins are given below.