1. Which of these is not a principle of the cell theory?

a. The cell is the basic unit of life.

b. All living things are made of cells.

c. All organisms are made up of many cells.

d. All cells come from other cells.

What are some major factors that are related to respiratory diseases that could affect one's vital capacity?

What structure regulates the amount of light passing to the visual receptors of the eye? a. irisb. corneac. lensd. aqueous humor

1. Vaccines are used to prevent the spread of viruses. They do or do not (circle one) kill viruses.

The vertebrate pax-6 gene product (the pax-6 protein) triggers a complex program of gene expression resulting in formation of the vertebrate eye, which has a single lens. the fly pax-6 gene leads to formation of the compound fly eye.

Which ocean resources are second in economic value to oil

Give one example of a disturbance that can lead to primary succession

Which of the following defines Romeo and Juliet as a tragedy, instead of a comedy?

Which of the following describes work? a) lifting a 1 kg mass for 1 m b) holding a 1 kg mass for 1 hour c) moving 1 m in 1 hour d) holding 1 kg mass

How would an object blocking a bronchus affect its airflow?

Mary is campaigning for improved air quality in her city. She is very concerned about carbon and methane outputs, but not phosphorous. Why is that? A. She thinks phosphorous makes a positive contribution to air quality, B.