Which structure of a diatom is rich in silicon?

a. flagellum

b. nucleus

c. cell wall

d. eyespot

During self pollination in seed plants pollen grains

What ethical issues arise in the conversations about cloning? What is the primary argument used by those who advocate human cloning? Is organ cloning considered acceptable? What are some of the problems encountered in animal cloning?

What is the role of fermentation in maintaining atp and nad levels?

A patient is admitted to the hospital to give birth to her baby identify at least 10 health care professionals wh may be on the team that provides her with care

Which of the following is an example of kinetic energy A. a girl running in a race B. a tank containing gasoline C. a car sitting motionless D. a sled sitting at the top of a hill

When an accurate experiment is repeated by another scientist, the results A) should be similar to those obtained originally. B) will be identical every time the experiment is repeated. C) should be completely different for a different scientist.

1. Which of the following forms all matter?

True or false Sedimentary rock can be formed from changes in igneous rock, but igneous rock cannot be formed from changes in sedimentary rock.

When a protein is denatured, why does it lose its functionality?

This is a rotating machine that converts the kinetic energy of the wind into mechanical energy. If the mechanical energy is used directly by machinery, such as a grinding stone, the machine is usually called a windmill.