Metabolism can be defined as the ________. a. adjustment by an organism to external or internal changes b. process whereby all unspecialized cells become specialized to perform distinct functions c. process whereby new cells are formed to replace worn-out cells d. sum of all chemical reactions in an organism

Which of the following is an example of a normal physiologic process that uses a positive feedback loop? a. blood pressure regulation b. childbirth c. regulation of fluid balance d. temperature regulation

The heart is within the ________. a. cranial cavity b. mediastinum c. posterior (dorsal) cavity d. All of the above

To make a banana split, you halve a banana into two long, thin, right and left sides along the ________. a. coronal plane b. longitudinal plane c. midsagittal plane d. transverse plane

Which of the following statements about chemical bonds is true?

a. Covalent bonds are stronger than ionic bonds.

b. Hydrogen bonds occur between two atoms of hydrogen.

c. Bonding readily occurs between nonpolar and polar molecules.

d. A molecule of water is unlikely to bond with an ion.

When an atom donates an electron to another atom, it becomes a. an ion b. an anion c. nonpolar d. all of the above

Arrange the following terms in order of increasing specialization: oligopotency, pleuripotency, unipotency, multipotency. a. multipotency, pleuripotency, oligopotency, unipotency b. pleuripotency, oligopotency, multipotency unipotency c. oligopotency, pleuripotency, unipotency, multipotency d. pleuripotency, multipotency, oligopotency, unipotency

Many arid-adapted organisms, including camels and some rodents, obtain all the water they need from the metabolism of fats. How does the metabolism of fats provide an organism with water?

The chemical formula of glucose is C6H12O6. What are the names of the elements in glucose, and how many atoms of each are present in a glucose molecule ?

Which of the following imaging techniques would be best to use to study the uptake of nutrients by rapidly multiplying cancer cells? a. CT b. MRI c. PET d. ultrasonography

The characteristic of life that is defined as “all the chemical reactions taking place in an organism” is

a. development.

b. growth.

c. metabolism.

d. organization.

e. responsiveness.

What are two major disadvantages of MRI scans? a. release of radiation and poor quality images b. high cost and the need for shielding from the magnetic signals c. can only view metabolically active tissues and inadequate availability of equipment d. release of radiation and the need for a patient to be confined to metal tube for up to 30 minutes

which of the following is not a difference between DNA and RNA?

Ligaments connect bones together and withstand a lot of stress. What type of connective tissue should you expect ligaments to contain? a. areolar tissue b. adipose tissue c. dense regular connective tissue d. dense irregular connective tissue