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Life Science Spring 2015 Final Pt. 2 Of 5
Test Description: Cell Structure Function, Human Systems Pt. 1, Homeostasis
Instructions: Answer all questions to get your test result.
1) How do new cells arise?
A
from pre-existing cells
B
from nutrients in the environment
C
from the correct combination of chemical elements
D
from sunlight, air, and water
2) What is one function of the cell membrane?
A
It manufactures proteins for the cell.
B
It contains the genetic information for the cell.
C
It generates chemical energy for the cell.
D
It regulates which materials enter and leave the cell.
3) A person with an impaired lymphoid system would
A
grow too quickly
B
not be able to transport oxygen to their cells
C
not be able to digest fats
D
get sick more often
4) Which of the following correctly lists the order in which food passes through the digestive system?
A
mouth—esophagus—duodenum—stomach—colon
B
mouth—esophagus—stomach—small intestine—large intestine
C
mouth—duodenum—stomach—large intestine—small intestine
D
mouth—stomach—esophagus—small intestine—large intestine
5) Although not part of the digestive system, the pancreas and liver contribute to digestion. What role do these organs play in breaking down food?
A
They cause contractions in the stomach that churn food into chyme.
B
They produce substances that help with the breakdown of fats and other nutrients.
C
They store excess food to be digested later by the digestive system.
D
The food passes through these organs in between the stomach and intestines.
6) Which type of muscle is found in the digestive system?
A
smooth muscle
B
voluntary muscle
C
cardiac muscle
D
skeletal muscle
7) Predict how the pituitary gland will respond if the water level in someone's body is low.
A
It will signal skin cells to absorb water vapor from the air.
B
It will replace water with other fluids that are available.
C
It will deliver stored water to other parts of the body.
D
It will release hormones that tell the kidneys to conserve water.
8) Which of these describes how shivering helps the body respond to the cold?
A
Muscle movements cause pores in the skin to absorb heat from the air that was previously lost.
B
Muscle movements generate heat, which replaces heat lost to the environment.
C
Muscle movements cause the blood to flow faster, which transports heat throughout the body.
D
Muscle movements make the water level in the body increase, which increases internal temperature.
9) What is one function of the pituitary gland?
A
to release hormones that regulate fluids and electrolytes
B
to measure blood pressure in arteries and veins
C
to filter salt and other substances from the blood
D
to transport oxygen to all the major organs
10) Which of these actions is evidence of the body's ability to maintain homeostasis?
A
applying lotion to dry skin
B
using insulin injections to treat low blood glucose levels
C
turning on an air conditioner to feel cool in hot weather
D
feeling hungry after skipping meals
11) Which of these is typically an effect of sweating?
A
loss of glucose
B
decrease in body temperature
C
production of electrolytes
D
division of cells
12) In which of these situations would the body most likely need to increase blood pressure and why?
A
during long periods of sleep in order to overcome the slower heart rate
B
while drinking water in order to increase flow through the kidneys
C
while the external temperature is low in order to maintain a core body temperature
D
during physical exercise in order to supply more oxygen to muscles
13) A student is waiting for the bus outside on a cold day. She is considering ways of keeping warm while she waits. Which of these actions would be most similar to shivering in terms of how heat is generated?
A
standing in the sunlight
B
jogging in place
C
putting on a warm coat
D
drinking a warm beverage
14) Which of the following best describes why, when compared to other cells, muscle cells contain a large number of mitochondria?
A
The mitochondria are needed to remove carbon dioxide from the cells.
B
The mitochondria produce myoglobin.
C
Muscle fibers are strongly associated with mitochondria.
D
The muscle cells require a lot of ATP for muscle contraction.
15) Cardiac muscle is found only in the
A
heart
B
veins
C
arteries
D
lungs
16) The specialized cells of the nervous system that are able to relay information all over the body because of their extensive connections are called ____________.
A
axons
B
synapses
C
dendrites
D
neurons
17) Hormones are released into which body system?
A
reproductive system
B
lymphatic system
C
nervous system
D
circulatory system
18) Which situation would NOT help the body regain homeostasis?
A
An individual's thyroid gland releases calcitonin to prevent calcium loss in bones when her body is experiening a loss of bon
B
An individual's pituitary gland releases antidiuretic hormone to increase water absorption when he is dehydrated.
C
An individual's adrenal gland releases epinephrine to increase heart rate when he is watching a horror movie.
D
An individual's pineal gland releases melatonin to regulate sleep and wake cycles when she is overtired.
*select an answer for all questions
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