Question 1

Compared to glycolytic skeletal muscle fibers, oxidative fibers ________.

Accepted Answer

A)  have a lower concentration of myoglobin 
B)  use glycolysis as their primary source of ATP 
C)  have a larger diameter 
D)  are more resistant to fatigue 
A)  have a lower concentration of myoglobin 
B)  use glycolysis as their primary source of ATP 
C)  have a larger diameter 
D)  are more resistant to fatigue

Question 2

Which of the following is a difference between the vision of a honeybee and the vision of a human?

Accepted Answer

A)  only humans can detect color 
B)  only human eyes use a lens 
C)  only bees can detect ultraviolet light 
D)  only bees can detect motion 
A)  only humans can detect color 
B)  only human eyes use a lens 
C)  only bees can detect ultraviolet light 
D)  only bees can detect motion

Question 3

What sensation would likely be produced by artificial electrical stimulation of a human's capsaicin-sensitive neurons?

Accepted Answer

A)  cold temperature 
B)  hot temperature 
C)  tactile stimulus 
D)  deep pressure 
A)  cold temperature 
B)  hot temperature 
C)  tactile stimulus 
D)  deep pressure

Question 4

Which of the following organisms is most challenged by drag when moving quickly?

Accepted Answer

A)  a shark 
B)  a rattlesnake 
C)  a cheetah 
D)  an earthworm 
A)  a shark 
B)  a rattlesnake 
C)  a cheetah 
D)  an earthworm

Question 5

For the following five events, which is the correct sequence that describes the excitation and contraction of a skeletal muscle fiber?
1) Tropomyosin shifts, exposing the myosin-binding sites on actin.
2) Calcium is released from the sarcoplasmic reticulum and binds to the troponin complex.
3) An action potential is propagated down the transverse tubules.
4) Cycles of myosin cross-bridge formation and breakdown cause the thin filaments to slide toward the center of the sarcomere.
5) An action potential in a motor neuron causes the axon to release acetylcholine, which triggers an action potential in a muscle fiber.

Accepted Answer

A)  1 → 2 → 3 → 4 → 5 
B)  2 → 1 → 3 → 5 → 4 
C)  2 → 3 → 4 → 1 → 5 
D)  5 → 3 → 2 → 1 → 4 
A)  1 → 2 → 3 → 4 → 5 
B)  2 → 1 → 3 → 5 → 4 
C)  2 → 3 → 4 → 1 → 5 
D)  5 → 3 → 2 → 1 → 4

Question 6

A given photon of light may trigger an action potential with thousands of times more energy. Which of the following is often involved in the amplification of the signal strength in a sensory cell?

Accepted Answer

A)  the receptor 
B)  ion channels 
C)  enzyme-catalyzed reactions 
D)  glutamate 
A)  the receptor 
B)  ion channels 
C)  enzyme-catalyzed reactions 
D)  glutamate

Question 7

Which of the following structures has large amounts of chitin?

Accepted Answer

A)  skeletons of mammals 
B)  hydrostatic skeletons of earthworms 
C)  exoskeletons of insects 
D)  body hairs of mammals 
A)  skeletons of mammals 
B)  hydrostatic skeletons of earthworms 
C)  exoskeletons of insects 
D)  body hairs of mammals

Question 8

A physiologist is studying the homeostatic control of blood pH. What type of receptor is most likely responsible for detecting changes in blood pH?

Accepted Answer

A)  mechanoreceptors 
B)  electromagnetic receptors 
C)  photoreceptors 
D)  chemoreceptors 
A)  mechanoreceptors 
B)  electromagnetic receptors 
C)  photoreceptors 
D)  chemoreceptors

Exam 50: Sensation and Movement in Animals

Compared to glycolytic skeletal muscle fibers, oxidative fibers ________.

Which of the following is a difference between the vision of a honeybee and the vision of a human?

What sensation would likely be produced by artificial electrical stimulation of a human's capsaicin-sensitive neurons?

Which of the following organisms is most challenged by drag when moving quickly?

A given photon of light may trigger an action potential with thousands of times more energy. Which of the following is often involved in the amplification of the signal strength in a sensory cell?

Which of the following structures has large amounts of chitin?

A physiologist is studying the homeostatic control of blood pH. What type of receptor is most likely responsible for detecting changes in blood pH?

Biology and Its Themes

Atoms and Molecules

The Chemistry of Water

Carbon: the Basis of Molecular Diversity

Biological Macromolecules and Lipids

Energy and Life

Cell Structure and Function

Cell Membranes

Cellular Signaling

Cell Respiration

Photosynthetic Processes

Mitosis

Sexual Life Cycles and Meiosis

Mendelian Genetics

Linkage and Chromosomes

Nucleic Acids and Inheritance

Expression of Genes

Control of Gene Expression

Dna Technology

The Evolution of Genomes

How Evolution Works

Phylogenetic Reconstruction

Microevolution

Species and Speciation

Macroevolution

Introduction to Viruses

Prokaryotes

The Origin and Evolution of Eukaryotes

Nonvascular and Seedless Vascular Plants

Seed Plants

Introduction to Fungi

An Introduction to Animal Diversity

Invertebrates

Vertebrates

Plant Structure and Growth

Transport in Vascular Plants

Plant Nutrition

Reproduction of Flowering Plants

Plant Signals and Behavior

The Animal Body

Chemical Signals in Animals

Animal Digestive Systems

Animal Transport Systems

Animal Excretory Systems

Animal Reproductive Systems

Development in Animals

Animal Defenses Against Infection

Electrical Signals in Animals

Neural Regulation in Animals

An Overview of Ecology

Behavioral Ecology

Populations and Life History Traits

Biodiversity and Communities

Energy Flow and Chemical Cycling in Ecosystems

Conservation and Global Ecology

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