Which of the following do all disease-causing viruses need in order to reproduce?

A reverse transcriptase

B the equipment of the host cell

C amino acids

D a signal from other viruses

On the back of your skull you can feel a small bump, below which is an opening where the spinal cord enters the skull.

Liver cells, bone cells, nerve cells, muscle cells are called?

Jane had leukemia as a child and had to undergo numerous bouts of chemotherapy. she had associated the waiting room with nausea. now 35 years old, she had to take her mother to the same hospital for breast cancer treatment.

What is the total number of particles in the nucleus of an atom of Cadmium (Cd) ? A - 112 B - 48 C-96 D-160

Which type of precipitation may contain acidic pollutants?

Which best explains how the body maintains homeostais? A. All systems work together to match the external environment B. All systems work together to stabilize the body C. Each system works interdependently to stabilize the body D.

It is an effect that drug use can have on society? A. Drug use increases pollution. B. Drug use leads to an increase in criminal activity. C. Drug use increases the spread of disease. D. All of the above

Which of the following affects the speed of light waves in a material? Angle at which the ray strikes the medium Color of the material Density of the material Temperature of the light wave

What does the nosepiece do on a microscope

What does a scale measure