An isotope is an atom of an element that varies in mass number due to variation in the number of:

A. atoms.

B. protons.

C. neutrons.

D. electrons.

Explain how it would be possible to have a change in a single base of DNA, but have the protein NOT change and be functional.

Only some plant cells have chloroplasts, but all actively metabolizing plant cells have mitochondria. why?

Pieces of DNA left at a crime scene can be multiplied by using a. PCR. b. gel electrophoresis. c. an electrical current. d. whole animal cloning.

Researchers crossed a heterozygous tall pea plant (Tt) with a homozygous short pea plant (tt). What is the probability that this cross will produce homozygous short (tt) offspring? A. 0% B. 25% C. 50% D. 100%

An object has a kinetic energy of 32 J and a mass of 36 kg, how fast is the object moving?

Part A What is a telomere? What is a telomere? the mechanism that holds two sister chromatids together the ends of linear chromosomes the site of origin of DNA replication DNA replication during telophase

Which facility is the most appropriate ems destination for a patient with sudden cardiac arrest who achieved return of spontaneous circulation in the field?

A topography map is used to study the changes in vegetation associated with different elevations. Which individual most likely uses them for this purpose? a scientist a businessman a government official a construction engineer

If you had purple flowers and white flowers the bees go visit the purple flowers more, why?

The word hyponatremia derives from the words hypo ("under" or "less") and natrium ("sodium"). The word natrium is the basis for the abbreviation Na for sodium.