practice exam 1 Flashcards
Which of the following best demonstrates the principle of complementarity of structure and function?
Bones can support and protect
Cells within the body work independently of one another and rarely have direct effects on other cells.
F
A structure that is composed of two or more tissue types that work together to perform specific functions for the body is a(n) ________.
organ
Which of the following organ systems is involved in the uptake and transport of materials required for life-sustaining processes?
I. Digestive system II. Urinary system III. Nervous system IV. Circulatory system V. Reproductive system VI. Respiratory system
I, IV, VI
It is important for any organism to maintain its boundaries, so that its internal environment remains distinct from the external environment surrounding it.
T
Generally what is the result of the negative feedback process?
to maintain homeostasis
Homeostasis is the condition in which the body maintains ________.
a relatively stable internal environment, within limits
Which directional term is used to describe the relationship of the skin to the skeletal muscles?
superficial
Anatomical position is important because ________.
it allows a common point of reference for body position to help communicate anatomical relationships
Which of the following imaging devices would best localize a tumor in a person’s brain?
MRI
In which body cavities are the lungs located?
pleural, ventral, and thoracic
The part of the serous membrane that lines the peritoneal cavity wall is called visceral peritoneum.
F
A major function of serous membranes is to decrease friction.
T
Which four elements comprise approximately 96% of our body weight?
carbon, oxygen, hydrogen, and nitrogen.
Which of the following is NOT a fundamental subatomic unit of an element?
nucleus
Select the correct statement about isotopes.
Isotopes of the same element have the same atomic number but differ in their mass number.
In a solution, the solute is the substance present in the greatest amount.
F
You notice that you cannot read your book through a test tube of fluid held against the print, making it so blurred as to be unreadable. There is no precipitant in the bottom of the beaker, though it has been sitting for several days in a rack. What type of liquid is this?
colloid
What type of bond is formed between the oxygen atom of one water molecule and the hydrogen atom of another water molecule?
hydrogen bond
What type of chemical bond can form between an atom with 11 protons and an atom with 17 protons?
ionic
The chloride ion (Cl-) indicated by the arrow is interacting most closely with which of the following?
a hydrogen atom within a water molecule
What is the classification of a solution with a pH of 8.3?
alkaline solution
The acidity of a solution reflects the concentration of free hydrogen ions in the solution.
T
Starch is the stored carbohydrate in plants, while ________ is the stored carbohydrate in animals.
glycogen