How do some cells become brain cells and others become skin cells, when the DNA in all the cells is exactly the same?

The normal stimulus to breathe is stimulated by the chemoreceptors that measure the change of what two gases?

How does the cryosphere and the hydrosphere interact?

What question would a biologist most likely investigate? 1. Which reactions produce decaffeinated coffee? 2. Do drier growing conditions affect the size of coffee beans? 3. Why do some people like tea better than coffee? 4.

A hypothesis is a ... 1.) tentative answer to a question. 2.) possible solution. 4.) proven theory. 5.) a stronger term for certainty than a theory.

Search around your house. Name two examples of objects that show mechanical energy.

Match the amino acid (AA) with its correct side chain category: 1) proline A) acidic AA 2) histidine B) nonpolar AA 3) alanine C) basic AA 4) threonine D) polar AA 5) tryptophan 6) aspartic acid

In which structure of the female reproductive system are eggs priduced

In a forest, rabbits are the prey to owls. An increase in the number of rabbits in the forest would result in Group of answer choices A. an increase in the number of owls. B. an increase in the number of producers.

How are viruses different from bacteria Bacteria are heterotrophic while viruses are autotrophic. Bacteria are living organisms; viruses are not. Bacteria have a membrane bound nucleus while viruses do not.

What part of the dna molecule makes you a unique individual?