A person who's resting heart rate is 55 and after exercise, his heart rate is 160, is said to have a well developed heart muscle. Why is this so?

A major type of lipid found in cell membranes is

What is the component of the body's metabolism that provides the energy required to maintain essential body processes such as respiration, circulation, and temperature regulation?

When two crossovers occur between two genetic loci, it can give the appearance that none have taken place, resulting in undercalculation of the recombination frequency. this is known as a (n) : ?

Which of the following is a primary function of carbohydrates A store of energy B transmission of genetic material C acceleration of chemical reactions D transport of molecules across membranes

Why does celery get limp when placed in a hypertonic solution?

Scientists divide Earth into three main layers: the core, the mantle, and the crust. How are these three layers identified? by their chemical composition by their structural features by their plate tectonics by their physical properties

Which of the following is NOT a characteristic of a dicot? A. Two cotyledons B. Vascular tissue bundles arranged C. Floral parts are often in multiples of three D. One main root

Where are the three high energy bonds found in atp

Muscular ridges on the inner surface of the ventricles are called

Which cellular process most directly ensures the formation, growth, and repair of specialized tissues in multicellular organisms?