Question 1

Explain how calcium is needed for muscle contraction.

Accepted Answer

Calcium is stored in the sarcoplasmic reticulum of muscle cells.When nervous stimulus triggers a muscle contraction,calcium is released from the sarcoplasmic reticulum,and diffuses rapidly throughout the cytoplasm of the muscle cell.It becomes attached to tropomyosin,causing it to change shape,and move away from the myosin binding site on the actin molecule.Myosin cross-bridges can then attach to the actin at the binding site,and muscle contraction begins.

Question 2

Sweat glands are part of the endocrine system.

Accepted Answer

A) True 
 B)False  False

Question 3

Your quadriceps are your:

Accepted Answer

A) upper arm muscles 
B) calf muscles 
C) thigh muscles 
D) shoulder muscles 
A) upper arm muscles 
B) calf muscles 
C) thigh muscles 
D) shoulder muscles C

Question 4

Evolution of segmentation in animals preceded further developments,such as:

Accepted Answer

A) more effective locomotion 
B) appendages 
C) survival if one segment is damaged 
D) All of these are correct. 
A) more effective locomotion 
B) appendages 
C) survival if one segment is damaged 
D) All of these are correct.

Question 5

Walking and lifting objects all require this type of muscle.

Accepted Answer

A) Smooth 
B) Cardiac 
C) Skeletal 
A) Smooth 
B) Cardiac 
C) Skeletal

Question 6

All of the following make up connective tissue except:

Accepted Answer

A) cells of the immune system 
B) cells of the skeletal system 
C) blood 
D) fat cells 
E) nerve cells 
A) cells of the immune system 
B) cells of the skeletal system 
C) blood 
D) fat cells 
E) nerve cells

Question 7

Each heart muscle cell is coupled to its neighbors electrically by tiny holes called:

Accepted Answer

A) pores 
B) gap junctions 
C) tight junctions 
D) striations 
E) axons 
A) pores 
B) gap junctions 
C) tight junctions 
D) striations 
E) axons

Question 8

Special bone cells,called _____________,are responsible for laying down new bone.

Accepted Answer

A) osteoclasts 
B) osteocytes 
C) osteoblasts 
D) Haversian canals 
A) osteoclasts 
B) osteocytes 
C) osteoblasts 
D) Haversian canals

Question 9

Which body system transports extracellular fluid and fats to the circulatory system?

Accepted Answer

A) Lymphatic 
B) Endocrine 
C) Skeletal 
D) Integumentary 
E) Digestive 
A) Lymphatic 
B) Endocrine 
C) Skeletal 
D) Integumentary 
E) Digestive

Question 10

All types of muscle contain actin and myosin myofilaments.

Accepted Answer

A) True 
 B)False

Question 11

The process of muscle contraction is controlled by phosphorus concentrations in the muscle cells.

Accepted Answer

A) True 
 B)False

Question 12

In which type of contraction is a force exerted by the muscle but the muscle does not shorten?

Accepted Answer

A) Isometric 
B) Isotonic 
A) Isometric 
B) Isotonic

Question 13

The fluid portion of blood is called __________.

Accepted Answer

The answer of The fluid portion of blood is called...

Question 14

When the _________________ muscle of the leg contracts,the lower leg is moved closer to the thigh.

Accepted Answer

The answer of When the _________________ muscle of the leg...

Question 15

Groups of cells of the same structure and function are organized into __________.

Accepted Answer

The answer of Groups of cells of the same structure...

Question 16

The _______________ molecule hides the myosin-binding site on the actin when muscles are not contracting.

Accepted Answer

A) calcium 
B) ATP 
C) neurotransmitter 
D) tropomyosin 
A) calcium 
B) ATP 
C) neurotransmitter 
D) tropomyosin

Question 17

_________________________ are chemicals secreted into the space between two nerve cells to transmit a message.

Accepted Answer

A) Neurotransmitters 
B) Hormones 
C) Synapses 
D) Glia 
A) Neurotransmitters 
B) Hormones 
C) Synapses 
D) Glia

Question 18

Pseudostratified epithelium is found:

Accepted Answer

A) in the liver 
B) in the glands 
C) on the skin 
D) lining parts of the respiratory tract 
E) in the nervous tissue 
A) in the liver 
B) in the glands 
C) on the skin 
D) lining parts of the respiratory tract 
E) in the nervous tissue

Question 19

The portion of a nerve cell that carries nerve impulses away from the cell is the:

Accepted Answer

A) glia 
B) cell body 
C) dendrite 
D) axon 
A) glia 
B) cell body 
C) dendrite 
D) axon

Question 20

____________ are a type of connective tissue cell that secrete proteins,especially collagen,and are active in wound healing.

Accepted Answer

A) Cartilage cells 
B) Erythrocytes 
C) Fibroblasts 
D) Bone cells 
A) Cartilage cells 
B) Erythrocytes 
C) Fibroblasts 
D) Bone cells

Exam 22: The Animal Body and How It Moves

Explain how calcium is needed for muscle contraction.

Sweat glands are part of the endocrine system.

Your quadriceps are your:

Evolution of segmentation in animals preceded further developments,such as:

Walking and lifting objects all require this type of muscle.

All of the following make up connective tissue except:

Each heart muscle cell is coupled to its neighbors electrically by tiny holes called:

Special bone cells,called _____________,are responsible for laying down new bone.

Which body system transports extracellular fluid and fats to the circulatory system?

All types of muscle contain actin and myosin myofilaments.

The process of muscle contraction is controlled by phosphorus concentrations in the muscle cells.

In which type of contraction is a force exerted by the muscle but the muscle does not shorten?

The fluid portion of blood is called __________.

When the _________________ muscle of the leg contracts,the lower leg is moved closer to the thigh.

Groups of cells of the same structure and function are organized into __________.

The _______________ molecule hides the myosin-binding site on the actin when muscles are not contracting.

_________________________ are chemicals secreted into the space between two nerve cells to transmit a message.

Pseudostratified epithelium is found:

The portion of a nerve cell that carries nerve impulses away from the cell is the:

____________ are a type of connective tissue cell that secrete proteins,especially collagen,and are active in wound healing.

The Science of Biology

The Chemistry of Life

Molecules of Life

Cells

Energy and Life

Photosynthesis: Acquiring Energy From the Sun

How Cells Harvest Energy From Food

Mitosis

Meiosis

Foundations of Genetics

DNA: the Genetic Material

How Genes Work

Genomics and Biotechnology

Evolution and Natural Selection

How We Name Living Things

Prokaryotes: the First Single-Celled Creatures

Protists: Advent of the Eukaryotes

Fungi Invade the Land

Evolution of the Animal Phyla

History of the Vertebrates

How Humans Evolved

Circulation

Respiration

The Path of Food Through the Animal Body

Maintaining the Internal Environment

How the Animal Body Defends Itself

The Nervous System

The Senses

Chemical Signaling Within the Animal Body

Reproduction and Development

Evolution of Plants

Plant Form and Function

Plant Reproduction and Growth

Populations and Communities

Ecosystems

Behavior and the Environment

Human Influences on the Living World

Filters