Which of these is not true of enzymes?

a. enzymes speed up reactions in cells.

b. enzymes work the same at all temperatures. c. enzymes work only in a relatively narrow ph range. d. enzymes work on specific chemicals?

Which kingdom includes unicellular eukaryotes? A. Protista B. Bacteria O O C. Eukarya O D. Archaea

the graph shows the gravitational force and distance two asteroids of equal mass (10 million kilograms). when the distance between the asteroids is 9,000 kilometers, the gravitational force between item is about 82 newtons (N).

Pure water has a pH level of a around what number?

To properly record a measurements, you must record which of the following? (pick as many as you want) A. Number B. Hypothesis C. Summary D. Unit

What is the connection between the liver (organ), UV radiation (sunlight), and bone tissue? I need something with more information for an essay

Made when sediments fill in a cavity made when an object decayed and the sediments harden into rock

The lemming is a small mammals with a very high daily energy expenditure for its size. Based on what you learned in the panda case study, what would you predict about the lemming?

You started out as a single cell and are now made of over 200,000 different types of cells. explain how this happens.

why is carbon such an important element in living organisms

Which of these is a fiber - yielding crop?