Which of the following statements is true?

Electrons have a negative charge.

The n=1 shell can hold eight electrons.

The number of electrons in an atom is equal to the number of neutrons.

The second electron shell can hold 16 electrons.

Jan is studying the firing of neurons in the brains of rats as part of her dissertation research on memory.

The outcome of the gram stain is based on differences in the cell's

How is a biogeochemical cycle connected to the transfer of matter and energy through a food chain?

What is the process called when bacteria around deep-sea hydrothermal vents use chemicals to produce energy rather than sunlight?

A health care worker is asked to infuse 1000 milliliters of medication into a patient over a period of 12 hours, using a 15-drip set. what is the drip rate? use the equation drip rate = milliliters of fluid x drip set / minutes of infusion.

Which sources do scientists use to reconstruct past climate conditions? Check all that apply. fossils frozen in glaciers daily temperatures pollen grains preserved in sediment running water tree rings

In beetles, the gene for color and the gene for pattern are located on the same chromosome and exhibit recombination.

Nucleic acids are composed of monomers called?

Cyclic amp (camp) stimulates one's metabolic rate. many supplement companies offer products claiming to increase the levels of this chemical within the body.

Injecting a person with a killed-bacteria vaccine can protect that individual from a disease because the proteins of the bacteria: A) remain in the body and live bacteria later prey on them instead of live tissue B) blind with receptors in the body,