17. According to the Mohs Hardness Scale, what's the approximate hardness of topaz?

A. 8

B. 10

C. 9

D. 7

What process allows for me to development of haploid sex cells?

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. Which statement is true for this reaction? Energy is absorbed in the reaction. Energy is released in the reaction.

How von frisch designed his research into honeybee dance

The process by witch gases trap heat near the earth is known as

What is the meaning of genetics

The changes in the surrounding environment can have an effect on plants too for a few weeks on the autumn season normally green leaves of deciduous plants acquire a red to yellow color how and why does this change in color happen?

Many of the biochemical reactions that occur within cells are catalyzed by enzymes. Which of the following statements is true about most enzyme-assisted reactions?

A cheeseburger from a fast food restaurant contains 19 g of fat, 20 g of carbohydrate, and 28 g of protein. How many kcal of energy does the cheeseburger contain

How do enzymes catalyze chemical reactions (don't just say "they lower the activation energy", give me specific mechanisms) ?

What must happen before the cell can go through mitosis? Interphase.