Anatomy final

13) Electrically charged particle due to loss of an electron. A) Molecule B) Cation C) Neutron D) Atom

B) Cation

4) The maintenance of a constant internal environment in an organism is termed A) positive feedback. B) homeostasis. C) negative feedback. D) effector control. E) integration.

B) Homeostasis

14) Anything that occupies space and has mass. A) Mass B) Matter C) Weight D) Energy

B) Matter

3) This type of feedback exaggerates the effects of variations from normal. A) negative B) positive C) neutral D) depressing E) all of the above

B) Positive

11) The genetic information is coded in DNA by the ________. A) regular alteration of sugar and phosphate molecules B) sequence of the nucleotides C) three-dimensional structure of the double helix D) arrangement of the histones

B) Sequence of nucleotides

7) Choose the anatomical topic and definition that is not correctly matched. A) Gross anatomy: study of structures visible to the eye. B) Microscopic anatomy: study of structures too small to be seen by the naked eye. C) Cytology: study of the structures in a particular region. D) Embryology: study of the changes in an individual from conception to birth.

C) Cytology: study of the structures in a particular region.

1) Which of the following is not a characteristic of life? A) responsiveness B) growth C) decomposition D) respiration E) excretion

C) Decomposition

5) Which of the following statements is true concerning feedback mechanisms? A) Positive feedback mechanisms always result in excessive damage to the host. B) Negative feedback mechanisms tend to increase the original stimulus. C) Negative feedback mechanisms work to prevent sudden severe changes within the body. D) Blood glucose levels are regulated by positive feedback mechanisms

C) Negative feedback mechanisms work to prevent sudden severe changes within the body

12) Carbohydrates are stored in the liver and muscles in the form of ________. A) glucose B) triglycerides C) glycogen D) cholesterol

C) glycogen

8) The chemical behavior of an atom is determined by A) the number of protons. B) the number of neutrons. C) the outermost electron shell. D) the size of the atom. E) the mass of the nucleus.

C) the outermost electron shell

15) If one pair of electrons is unequally shared between two atoms, a(n) ________ occurs. A) single nonpolar covalent bond B) double nonpolar covalent bond C) double polar covalent bond D) single polar covalent bond E) hydrogen bond

D) single polar covalent bond

2) The integrating center for the negative feedback loop that regulates body temperature is the A) brain. B) skin. C) temperature receptor. D) positive feedback center. E) thermostat.

A) Brain

10) Which of the following statements is the most correct regarding homeostatic imbalance? A) It is considered the cause of most diseases. B) The internal environment is becoming more stable. C) Positive feedback mechanisms are overwhelmed. D) Negative mechanisms are functioning normally feedback

A) It is considered the cause of most diseases

9) The innermost electron shell in an atom holds up to ________ electrons. A) 1 B) 2 C) 4 D) 6 E) 8

B) 2

6) A good example of a positive feedback mechanism would be ________. A) body temperature regulation B) regulating glucose levels in the blood C) enhancement of labor contractions D) blood calcium level regulation

C) Enhancement of labor contractions