Who developed the first microscope?

You conduct an experiment to determine the concentration of ions in an unknown solution. You place 300mL inside a dialysis bag and place the bag into a beaker of water with an ion concentration of 100 ppm (parts per million).

As a result of diffusion, the concentration of many types of substance a.) always remains greater inside a membrane. b.) eventually becomes balanced on both side of a membrane. c.) always remains greater on the outside of a membrane. d.

How many gallons of blood are in the human body?

How does coronavirus affect the blood in the circulatory system?

At are the first organisms in the primary succession? a. small trees b. small bushes c. lichens d. pine trees

Which has more kinetic energy, a feather floating through the air or a rock on the ground?

The topmost zone near the shore of a lake or pond is the living are food for other creatures such as turtles, snakes, and ducks zone. The species A. Olimnetic B. Profundal C. littoral D. none of the above

In a food web, a bird eats plant-eating insects but also eats berries, where does the bird fit in the food web? a. both as a primary and secondary consumer b. as a primary consumer c. as a secondary consumer

In order to build the dipeptide, water was removed and smaller molecules were joined o make a larger molecule. What is the name of this chemical process?

Iodine solution is added to a cake solution. The color changes to purple. Based on this result, what biological molecules are present in the cake solution?