Question 1

The fact that every organism continuously exchanges chemicals and energy with its surroundings indicates that organisms ________.

Accepted Answer

A) are open systems 
B) are closed systems 
C) have tightly controlled thermoregulation 
D) osmoregulate 
A) are open systems 
B) are closed systems 
C) have tightly controlled thermoregulation 
D) osmoregulate A

Question 2

One function of this organ system is ________.

Accepted Answer

A) excretion of urea 
B) production of gametes 
C) protection of the body 
D) thermoregulation 
A) excretion of urea 
B) production of gametes 
C) protection of the body 
D) thermoregulation A

Question 3

Which one of the following types of tissue stores fat in the body?

Accepted Answer

A) cartilage 
B) bone 
C) adipose tissue 
D) fibrous connective tissue 
A) cartilage 
B) bone 
C) adipose tissue 
D) fibrous connective tissue C

Question 4

Excretion is the movement of substances from the ________ to the ________.

Accepted Answer

A) filtrate...blood 
B) kidney...urinary bladder 
C) blood...filtrate 
D) kidneys...outside 
A) filtrate...blood 
B) kidney...urinary bladder 
C) blood...filtrate 
D) kidneys...outside

Question 5

Oxytocin controls the contractions of the uterus.Of which type of tissue is the uterus composed?

Accepted Answer

A) nervous tissue 
B) skeletal muscle 
C) smooth muscle 
D) epithelium 
A) nervous tissue 
B) skeletal muscle 
C) smooth muscle 
D) epithelium

Question 6

When spiders show signs of thermal stress,this is an indication that they are unable to ________.

Accepted Answer

A) move 
B) function 
C) osmoregulate 
D) thermoregulate 
A) move 
B) function 
C) osmoregulate 
D) thermoregulate

Question 7

Which of the following is most likely to be responsible if,when your blood sugar level rose,the level went back down?

Accepted Answer

A) the use of the sugar for energy by your cells 
B) a homeostatic mechanism based on negative feedback 
C) type 2 diabetes 
D) a homeostatic mechanism based on positive feedback 
A) the use of the sugar for energy by your cells 
B) a homeostatic mechanism based on negative feedback 
C) type 2 diabetes 
D) a homeostatic mechanism based on positive feedback

Question 8

Which of the following is TRUE of a typical skeletal muscle?

Accepted Answer

A) It is found in the walls of organs such as the digestive tract. 
B) Its fibers do not have a striped appearance under the microscope. 
C) It can be enlarged by exercise. 
D) It is only found in heart tissue. 
A) It is found in the walls of organs such as the digestive tract. 
B) Its fibers do not have a striped appearance under the microscope. 
C) It can be enlarged by exercise. 
D) It is only found in heart tissue.

Question 9

Imagine an invertebrate that lives in an estuary where salinity varies cyclically with the tides.If this animal practices homeostasis with respect to the salt concentration of its body fluids,its salt concentration will show ________.

Accepted Answer

A) no fluctuations 
B) slight,continuous fluctuations 
C) a more concentrated state than the surrounding water at all times D a more diluted state than the surrounding water at all times 
A) no fluctuations 
B) slight,continuous fluctuations 
C) a more concentrated state than the surrounding water at all times D a more diluted state than the surrounding water at all times

Question 10

Homeostasis ________.

Accepted Answer

A) is the maintenance of an unchanging internal state 
B) is a pathological condition 
C) is the maintenance of a relatively stable internal environment 
D) is the way the internal environment influences the external environment 
A) is the maintenance of an unchanging internal state 
B) is a pathological condition 
C) is the maintenance of a relatively stable internal environment 
D) is the way the internal environment influences the external environment

Question 11

The vertebrate kidney helps to keep the acidity of the body fluids constant by varying the amount of hydrogen ions (H⁺)it secretes into the urine.You can confidently predict that this aspect of kidney function,like other mechanisms of homeostasis,will be controlled by ________.

Accepted Answer

A) a negative feedback mechanism 
B) nerve impulses from the brain 
C) a hormone produced in the brain 
D) a hormone produced in the kidney itself 
A) a negative feedback mechanism 
B) nerve impulses from the brain 
C) a hormone produced in the brain 
D) a hormone produced in the kidney itself

Question 12

Which of the following animals is generating (producing)body heat to warm itself?

Accepted Answer

A) a beetle that absorbs solar radiation 
B) a moth that shivers its wings before flight 
C) a lizard that lies on a warm rock 
D) a turtle that moves to a warm,shallow part of a pond 
A) a beetle that absorbs solar radiation 
B) a moth that shivers its wings before flight 
C) a lizard that lies on a warm rock 
D) a turtle that moves to a warm,shallow part of a pond

Question 13

Which of the following statements apply to freshwater fish?

Accepted Answer

A) They lose water by osmosis. 
B) The concentration of solutes in their internal fluids is lower than in the surrounding water. 
C) They pump out ions via the gills. 
D) They produce dilute urine. 
A) They lose water by osmosis. 
B) The concentration of solutes in their internal fluids is lower than in the surrounding water. 
C) They pump out ions via the gills. 
D) They produce dilute urine.

Question 14

A diuretic is a substance that ________.

Accepted Answer

A) promotes sweating 
B) regulates the contraction of cardiac muscle 
C) inhibits urinary water loss 
D) promotes urinary water loss 
A) promotes sweating 
B) regulates the contraction of cardiac muscle 
C) inhibits urinary water loss 
D) promotes urinary water loss

Question 15

Reabsorption is the movement of substances from the ________ to the ________.

Accepted Answer

A) blood...nephron 
B) filtrate...blood 
C) kidney...urinary bladder 
D) blood...filtrate 
A) blood...nephron 
B) filtrate...blood 
C) kidney...urinary bladder 
D) blood...filtrate

Question 16

Which of the following is a physiological response that takes place in many animals when they get too hot?

Accepted Answer

A) slowing of the heart rate 
B) constriction of blood vessels in the skin 
C) contraction of muscles 
D) increased blood flow to the skin 
A) slowing of the heart rate 
B) constriction of blood vessels in the skin 
C) contraction of muscles 
D) increased blood flow to the skin

Question 17

Which of the following is a source of water loss in humans? I)urination
II)defecation
III)breathing

Accepted Answer

A) I 
B) II 
C) III 
D) I,II,and III 
A) I 
B) II 
C) III 
D) I,II,and III

Question 18

The scientist studies a second animal whose oxygen consumption rises as temperature increases.The thermoregulatory strategy of the second animal is most likely to be ________.

Accepted Answer

A) an ectotherm 
B) an endotherm 
C) one that cannot osmoregulate 
D) one that primarily uses metabolism to regulate temperature 
A) an ectotherm 
B) an endotherm 
C) one that cannot osmoregulate 
D) one that primarily uses metabolism to regulate temperature

Question 19

What best describes the regulatory mechanism described in the scenario?

Accepted Answer

A) negative feedback 
B) positive feedback 
C) thermoregulation 
D) natural selection 
A) negative feedback 
B) positive feedback 
C) thermoregulation 
D) natural selection

Question 20

To communicate the results of the experiment best,how should the scientist graph the data?

Accepted Answer

A) Use a bar graph with oxygen consumption on the x-axis and temperature on the y-axis. 
B) Use a line graph with day on the x-axis and temperature on the y-axis. 
C) Use a line graph with temperature on the x-axis and oxygen consumption on the y-axis. 
D) Use a bar graph with temperature on the x-axis and oxygen consumption on the y-axis. 
A) Use a bar graph with oxygen consumption on the x-axis and temperature on the y-axis. 
B) Use a line graph with day on the x-axis and temperature on the y-axis. 
C) Use a line graph with temperature on the x-axis and oxygen consumption on the y-axis. 
D) Use a bar graph with temperature on the x-axis and oxygen consumption on the y-axis.

Exam 21: Unifying Concepts of Animal Structure and Function

The fact that every organism continuously exchanges chemicals and energy with its surroundings indicates that organisms ________.

One function of this organ system is ________.

Which one of the following types of tissue stores fat in the body?

Excretion is the movement of substances from the ________ to the ________.

Oxytocin controls the contractions of the uterus.Of which type of tissue is the uterus composed?

When spiders show signs of thermal stress,this is an indication that they are unable to ________.

Which of the following is most likely to be responsible if,when your blood sugar level rose,the level went back down?

Which of the following is TRUE of a typical skeletal muscle?

Imagine an invertebrate that lives in an estuary where salinity varies cyclically with the tides.If this animal practices homeostasis with respect to the salt concentration of its body fluids,its salt concentration will show ________.

Homeostasis ________.

The vertebrate kidney helps to keep the acidity of the body fluids constant by varying the amount of hydrogen ions (H⁺)it secretes into the urine.You can confidently predict that this aspect of kidney function,like other mechanisms of homeostasis,will be controlled by ________.

Which of the following animals is generating (producing)body heat to warm itself?

Which of the following statements apply to freshwater fish?

A diuretic is a substance that ________.

Reabsorption is the movement of substances from the ________ to the ________.

Which of the following is a physiological response that takes place in many animals when they get too hot?

Which of the following is a source of water loss in humans? I)urination II)defecation III)breathing

The scientist studies a second animal whose oxygen consumption rises as temperature increases.The thermoregulatory strategy of the second animal is most likely to be ________.

What best describes the regulatory mechanism described in the scenario?

To communicate the results of the experiment best,how should the scientist graph the data?

Introduction: Biology Today

Essential Chemistry for Biology

The Molecules of Life

A Tour of the Cell

The Working Cell

Cellular Respiration: Obtaining Energy From Food

Photosynthesis: Using Light to Make Food

Cellular Reproduction: Cells From Cells

Patterns of Inheritance

The Structure and Function of Dna

How Genes Are Controlled

DNA Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Microbial Life

The Evolution of Plants and Fungi

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Nutrition and Digestion

Circulation and Respiration

The Bodys Defenses

Hormones

Reproduction and Development

Nervous,Sensory,and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

Filters

Excretion is the movement of substances from the to the .

Reabsorption is the movement of substances from the to the .