Cells can be observed using light or electron microscopes. Outline the differences between light and electron microscopes and discuss the pros and cons of the electric microscope.

A researcher obtains two frog embryos at the gastrula stage of development. She carefully removes a cluster of cells from a location that she knows whould normally become neural tube tissue and transplants it into the second gastrula in a location

In which process are original tissues of the organism can be preserved

Random assortment of maternal and paternal chromosomes along the spindle during meiosis generates A. gametes that contain some paternal and some maternal chromosomes. B. gametes that contain only paternal or maternal chromosomes. C.

In some mice, fur color is inherited through incomplete dominance. The colors that are possible are black fur, white fur and grey fur. Grey is the trait that is inherited through incomplete dominance.

Which action is an aseptic technique that would reduce the chance of bacteria on a lab table contaminating a lab notebook? a. covering the surface of the lab table with paper towels b. wiping off the surface of the lab table with a disinfectant c.

Why sugar dissolves easily in water but sand do not?

Independent variable (What is the variable that you deliberately change?)

Question from Campbell Biology Chapter 23: 48) If global warming permits mosquitoes to live at higher altitudes than they currently do, then in which direction should the entire plot in the correct distribution below be shifted?

What do humans and amoebas have in common

Major consequence of ozone depletion is that a. solar energy will become ineffective. b. more harmful uv rays will reach the earth's surface. c. acid rain will increase. d. certain parts of the earth will become over-vegetated.