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WorksheetsPHYS 205, Exam 1 Practice Questions
Total questions: 64
Worksheet time: 1hrs 25mins
Name
Class
Date
1.
Homeostasis in the human body is often maintained by a:
a)
neutral feedback loop
b)
solar feedback loop
c)
positive feedback loop
d)
negative feedback loop
2.
The maintenance of an organism’s internal environment is called:
a)
compensating
b)
homeostasis
c)
balancing
d)
routine
3.
The "cause" for something to happen is the
a)
response
b)
effect
c)
stimulus
d)
homeostasis
4.
The "effect" of a given stimulus is the...
a)
response
b)
stimulus
c)
cause
d)
result
5.
a body system that controls and coordinates all body activities through electric impulses/messages between brain, spinal cord and nerves.
a)
endocrine system
b)
nervous system
c)
nerve
d)
neuron
6.
a body system that controls growth and homeostasis by secreting hormones from glands.
a)
skeletal system
b)
nervous system
c)
endocrine sytem
d)
integumentary system
7.
Negative Feedback Loops:
a)
amplify processes
b)
prevent small changes from getting larger
c)
are initiated during childbirth
d)
are found only in plants
8.
Maintaining body temperature is an example of a:
a)
negative feedback loop
b)
positive feedback loop
9.
The process of childbirth is an example of:
a)
negative feedback loop
b)
positive feedback loop
10.
When a collection of similar cells group together, they form what is called _________.
a)
Organs
b)
Tissue
c)
Organ system
d)
Organism
11.
Rank from simplest to most complex
a)
cell, organ, organ system, tissue, organism
b)
organism, tissue, cell, organ, organ system
c)
cell, tissue, organ, organ system, organism
d)
organism, organ system, organ, tissue, cell
12.
What is responsible for delivering oxygen and removing carbon dioxide from the body?
a)
cell nucleus
b)
excretory system
c)
nervous tissue
d)
respiratory system
13.
All living things have an internal structure of ____________, which are the smallest unit of life.
a)
Cells
b)
ATP
c)
Glucose
d)
Sugar
14.
The combination of chemical reactions through
which an organism builds up or breaks down
materials to make energy to carriy out its life processes is called ...
a)
absorption
b)
metabolism
c)
digestion
d)
consumption
15.
When you step out into the cold, your body shivers in order to keep its temperature at 98.6F.
a)
All living things have a metabolism
b)
All living things have an internal structure of cells
c)
All living things respond to their environment
d)
All living things grow
16.
What is the liquid in the cell that all organelles float around in?
a)
lysosome
b)
ribosomes
c)
cytoplasm
17.
What part of the cell makes proteins?
a)
lysosome
b)
ribosomes
c)
mitochondria
18.
What part of the cell produces energy?
a)
lysosome
b)
mitochondria
c)
Endoplasmic reticulum
19.
Which statement is NOT part of the Cell Theory?
a)
Only animals are made of cells.
b)
Cells are the basic unit of structure and function in all living things.
c)
All living things are made of cells.
d)
New cells come from existing cells.
20.
What is the function of the cell membrane?
a)
To protect and support the cell
b)
To perform different functions in each cell
c)
To control what enters and leaves the cell
d)
To form a hard outer covering for the cell
21.
What is the function of the lysosomes?
a)
To make proteins for the cell
b)
To store water and other materials
c)
To convert food and oxygen into energy
d)
To use enzymes to digest old or worn out cell parts
22.
The third component of homeostatic control mechanisms that provides the means for the control center's response to the stimulus (change) in the body or environment.
a)
Receptor
b)
Regulation
c)
Effector
d)
Effective
23.
This organelle helps transport material, detoxify the cell, and produce lipids.
a)
Rough ER
b)
Smooth ER
c)
Golgi Complex
d)
Nucleus
24.
This process is when water moves through a membrane
a)
Meiosis
b)
Homeostasis
c)
Osmosis
d)
Mitosis
25.
This type of tissue lines the internal organs and covers the outside of the body as skin
a)
epithelial
b)
connective
c)
muscular
d)
nervous
26.
Nervous tissue
a)
Tissue that is responsible for lining and covering
b)
Tissue responsible for protecting, supporting, and binding together other body tissues
c)
Tissues that contracts and shortens to produce movement
d)
Tissue that receives and conducts electrochemical impulses from one part of the body to another
27.
Epithelial tissue is
a)
Bone, cartilage,dense connective tissue, loose connective tissue, and blood
b)
Highly specialized tissue that contracts or shortens to produce movement
c)
Lining and covering tissue of the body
28.
What tissue type is shown?
a)
Epithelial
b)
Connective
c)
Muscle
d)
Nervous
29.
ID
a)
Simple Squamous Epithelium
b)
Stratified Squamous Epithelium
c)
Simple Cuboidal Epithelium
d)
Pseudostratified Ciliated Columnar Epithelium
30.
This tissue is a big
secretor! It makes up all types of glands.
a)
Simple Squamous Epithelium
b)
Stratified Squamous Epithelium
c)
Simple Cuboidal Epithelium
d)
Stratified Cuboidal Epithelium
31.
Identify the tissue
a)
Simple Squamos ET
b)
Simple cubodial ET
c)
Simple Columnar ET
d)
Pseudo stratified
32.
Identify
a)
Simple squamous
b)
Simple cuboidal
c)
Simple columnar
d)
Transitional
33.
Identify
a)
Transitional ET
b)
Stratified Squamous ET
c)
Simple Columnar ET
d)
Pseudostratified ET
34.
For cells to stay alive they require what type of SA:V?
a)
Large SA, Large V
b)
Small SA, Large V
c)
Large SA, Small V
d)
Small SA, Small V
35.
As a cell grows, it
a)
places more demands on its DNA.
b)
uses up food and oxygen more quickly.
c)
has more trouble moving enough materials across its cell membrane.
d)
All are problems as the cell grows.
36.
A larger cell is_______________ it is in moving nutrients and waste materials across its cell membrane.
a)
more efficient
b)
over efficient
c)
similarly efficient
d)
less efficient
37.
Cell membranes are said to be
a)
selectively permeable
b)
non-permeable
c)
permeable
d)
psuedopermeable
38.
Which molecule affects the fluidity of the cell membrane at different temperatures?
a)
fatty acid
b)
glycerol
c)
acetylcholine
d)
cholesterol
39.
A special type of diffusion that involves water only
a)
osmosis
b)
facilitated diffusion
c)
active transport
d)
bulk transport
40.
Which of the following requires ATP
a)
osmosis
b)
diffusion
c)
active transport
d)
facilitated diffusion
41.
Which of the following is the bulk excretion of materials from the cell?
a)
pinocytosis
b)
phagocytosis
c)
endocytosis
d)
exocytosis
42.
When ions or molecules move down a concentration gradient it is termed
a)
osmosis
b)
diffusion
c)
active transport
d)
facilitated diffusion
43.
Lipid heads are...
a)
Polar
b)
Nonpolar
44.
A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which of the following has occurred?
a)
The swollen gums have absorbed the saltwater solution.
b)
The saltwater solution lowers the temperature of the water in the gums.
c)
The salt in the solution has moved against the concentration gradient.
d)
The water in the gums has moved out due to the high concentration of salt in the solution.
45.
From the initial conditions and resultsdescribed which of the following is a logical conclusion?The followingquestions refer to an experiment in which a dialysis-tubing bag is filled with a mixture of3% starch and 3% glucose and placed in abeaker of distilled water, as shown at right.
After 3 hours, glucose can be detected inthe water outside the dialysis-tubing bag,but starch cannot.
From the initial conditions and results described which of the following is a logical conclusion?
After 3 hours, glucose can be detected inthe water outside the dialysis-tubing bag,but starch cannot.
From the initial conditions and results described which of the following is a logical conclusion?
a)
The bag will contain more water than it did in the original condition.
b)
The contents of the bag will have the same osmotic concentration as the surroundingsolution.
c)
Starch molecules will continue to pass through the bag.
d)
A glucose test on the solution in the bag will be negative.
46.
Carrot sticks that are left in a dish of freshwater for several hours become stiff and hard. Similar sticks left in a saltwater solution become limp and soft. From this we can deduce that the freshwater is ______ and the saltwater is ________ to the cells of the carrot sticks.
a)
hypotonic, hypertonic
b)
hypertonic, hypertonic
c)
hypotonic, hypotonic
d)
hypertonic, hypertonic
47.
The cell below is in a _________ solution.
a)
Hypotonic
b)
Hypertonic
c)
Isotonic
48.
Molecules diffusing with the concentration gradient through a protein channel is...
a)
Facilitated Diffusion
b)
Simple Diffusion
c)
Active Transport
d)
Osmosis
49.
This process is known as ________ transport.
a)
passive
b)
active
c)
protein
d)
temporary
50.
When looking at the cell membrane, where are the lipid tails located?
a)
Inner part of the bilayer
b)
Outer part of the bilayer
c)
At the end of the bilayer
d)
Goes through each end of the bilayer
51.
A lab tech performed a routine RBC count. The cells appeared shriveled and were difficult to count. What was wrong with the cell storage solution.
a)
It was hypertonic
b)
It was hypotonic
c)
It was isotonic
52.
Mechanically attaches adjacent cells. Results in a sturdy but flexible sheet of cells. Especially where tissues get stretched, holds the cells together
a)
Desmosomes
b)
TIght Junctions
c)
Gap Junctions
d)
Plasmodesmata
53.
This junction forms an impermeable barrier between cells producing a zipperlike fastening. Tissues that serve as barriers have these.
a)
Desmosomes
b)
TIght Junctions
c)
Gap Junctions
d)
Plasmodesmata
54.
This junction allows communication between two cells with adjoining plasma membrane channels.
a)
Desmosomes
b)
TIght Junctions
c)
Gap Junctions
d)
Plasmodesmata
55.
Which organelle sorts, modifies and packages molecules for storage in the cell or secretion out of the cell?
a)
Mitochondria
b)
Smooth Endoplasmic Reticulum
c)
Rough Endoplasmic Reticulum
d)
Golgi Body
56.
Which molecular characteristics would DECREASE the rate of diffusion the most?
a)
large, non-polar
b)
large, polar
c)
small, non-polar
d)
small, polar
57.
The sodium-potassium pump usually pumps
a)
only potassium ions and sugar molecules
b)
potassium ions out of the cell
c)
sodium ions into the cell
d)
potassium ions into the cell
58.
How does the concentration gradient affect diffusion?
a)
The greater the concentration difference the faster the rate
b)
The smaller the concentration difference the faster the rate
c)
The greater the concentration the slower the rate
59.
How does surface area affect the rate of diffusion?
a)
Greater the surface area the slower the rate
b)
Greater the surface area the faster the rate
c)
Smaller the surface area the faster the rate
d)
Surface area does not affect diffusion
60.
How does distance affect diffusion?
a)
Shorter the distance the faster the rate
b)
The bigger the distance the faster the rate
c)
It doesn't matter - molecules will always diffuse at the same rate
61.
What organelle helps with cell digestion?
a)
Lysosomes
b)
Ribosomes
c)
Golgi Complex
d)
ER
62.
Main producer of ATP in all eukaryotes
a)
chloroplast
b)
mitochondria
c)
lysosome
d)
smooth er
63.
Which organelle detoxifies substances by producing hydrogen peroxide?
a)
peroxisome
b)
chloroplast
c)
smooth ER
d)
lysosome
64.
Muscle tissue in the heart have to work hard 24/7 so they need a lot of energy. Which organelle would we expect to find an abundance of in those cardiac muscle cells?
a)
ribosomes
b)
mithochondria
c)
Golgi bodies
d)
lysosomes
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