Reflexes may be coordinated by the brain or by the spinal cord.

In reflexes co-ordinated by the brain, there are no relay neurones.

Suggest why there is a difference in the mean speed of the impulse for the two reflexes.

Which most likely describes a supersaturated solution? A. a hot solution with all of the solute dissolved B. a cold solution with all of the solute dissolved C. a hot solution with most of the solute resting on the bottom D.

this organism is a single cell that was isolated from the human body has no nicleus and was causing the patient to be ill

The mother of an infant with down syndrome asks the nurse what causes the disorder. before responding, the nurse recalls that the genetic factor of down syndrome results from what?

A hunter illegally kills a wolf in Yellowstone national Park in attempts to bring the worst school back to Florida

How do hydrothermal vent archaea get energy?

Which of the following does not require a medium through which to travel in word which can travel through empty space

When you eat a bag of cookies, your blood sugar level increases. As blood sugar levels rise, insulin levels increase to move the sugar into the cells and lower the blood sugar level. As the blood sugar level drops, so does the level of insulin.

Mendel's law of independent assortment has its basis in which of the following events of meiosis I?

Describe a procedure humans may have used to produce broccoli, which has small flowers and thick stems?

In the United States, mothers who live in poverty generally have babies with lower birthweight than those who do not live in poverty. The mean birthweight for babies born in the U. S. to mothers living in poverty is approximately 2800 grams.