Resting antigen presenting cells are not able to active naïve t-cells.

a. True

b. False

Identify one fuel source in the table that is considered a fossilfuel

Which of the following describes qualitative data? a. Nothing cloudiness occurs when two solutions are mixed. B. Measuring the volume of an object by water displacement C. Taking the mass of an object using a balance. D.

Cecil is working on samples of Chlorine oxygen Bromine and silver. the samples are all at room temperature which substance is most likely the most dense

What is an enzyme and what does it do

How does the jet stream disrupt weather

Which of the following is true about DNA mutations? A. Mutations can only occur in the body cells of an organism. B. Mutations can only be caused by environmental factors such as radiation. C. Mutations can spontaneously occur during DNA replication.

How is a door hinge like the joint in your knee

Which biome receives 200 to 400 cm of rain per year? A) deciduous forest B) temperate rain forest C) taiga D) grassland

Which of the following statements violates the cell theory? A) Mitosis produces new cells identical to the parent cell that divided to make them. B) Viruses are not considered to be living organisms, because they are smaller than a cell.

One scientist discovered a new theory on the evolution of the universe. What is the next step for the scientist to take?