sci_mod11

Question 1

The portion of the skeleton that supports and protects the head, neck, and trunk

Answer 1

Axial skeleton

Question 2

The portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it

Answer 2

Appendicular skeleton

Question 3

A body covering typically made of chitin, that provides support and protection

Answer 3

Exoskeleton

Question 4

A close relationship between two or more species where at least one benefit

Answer 4

Symbiosis

Question 5

What three things make up the human superstructure

Answer 5

The skeleton, the muscles, and the skin

Question 6

What are the two main differences between smooth muscles and skeletal muscles

Answer 6

Smooth muscles are smooth and unstriped while skeletal muscles are rough and striped. Skeletal muscles are voluntary ,while smooth muscles are involuntary

Question 7

Where is the cardiac muscles found? Is it involuntary muscle or a voluntary one

Answer 7

The cardiac muscle is in the heart. It is an involuntary muscle

Question 8

What is produced in the bone marrow

Answer 8

Blood cell

Question 9

What is a keratinization? What is it used for

Answer 9

Keratinization is a process that hardens living cells. It is used to make the outer layer of the epidermis, as well as hair and nails

Question 10

What two principal substances make up bone? What qualities do they each provide to the bone

Answer 10

Bones are made up of collagen and minerals. The collagen makes the bones flexible, while the minerals make them hard and strong

Question 11

What is the difference between compact bone tissue and spongy bone tissue

Answer 11

Spongy bone tissue is lighter than compact bone tissue

Question 12

Are bones alive?

Answer 12

Bones are alive

Question 13

What is the difference between an invertebrate and a vertebrate? Is it possible to be neither

Answer 13

Vertebrates are animals with backbones. Invertebrates are animals without backbones. It is possible to be neither

Question 14

Are your arms part of the appendicular skeleton or the axial skeleton. What about your neck

Answer 14

The arm belongs to the appendicular skeleton, but the neck is a part of the axial skeleton

Question 15

What is the difference between an endoskeleton and an exoskeleton? What do we call organisms with exoskeletons

Answer 15

An exoskeleton is a support structure that exists on the outside of an organism, while an endoskeleton is on the inside of the organism. Creatures with exoskeleton are called Arthropoda

Question 16

Order the following joints in terms of increasing range of motion. Then order them in terms of increasing stability

Answer 16

Range: hinge, saddle, ball-and-socket.stability: ball-and-socket, saddle, hinge

Question 17

What purpose do ligaments serve in the joints? What about cartilage

Answer 17

Ligaments tend to hold the bones of the joint together. Cartilage cushions the bones of the joint so that they do not rub painfully against each other

Question 18

How do skeletal muscles attach to the skeleton

Answer 18

Skeletal muscles end in tendons,and the tendons attach to the skeleton

Question 19

Describe how biceps and triceps work together to move the forearm

Answer 19

In order to raise the forearm, the biceps contract while the triceps relaxes. To extend the forearm,the biceps relaxes while the triceps contract

Question 20

Is the stomach composed of smooth muscle or skeletal muscle

Answer 20

The stomach is made of smooth muscles

Question 21

A sunflower will actually turn throughout the days so that it follows the sun across the sky. What is the term we use to describe this

Answer 21

Phototropism

Question 22

What are the two main functions of hair

Answer 22

Insulate and provide sensation

Question 23

What are the two main functions of sweat

Answer 23

Sweat cools the body down and also provides food for beneficial bacteria and fungi which lives on your skin

Question 24

Why do your skin cells constantly fall off your body

Answer 24

The cells on the outer layer are dead

Question 25

What do the sebaceous glands produce, and what are the substance’s two main purposes

Answer 25

The oil softens the skin and hair and also makes it hard for certain Bactria to attach themselves to your skin

Question 26

Classify each as a mammal, bid, reptile, or amphibian

A.animal has hair

B. Animal breathes through its skin

C.animal has scales

D. Animal has feathers

Answer 26

A. Mammal

B.amphibian

C. Reptile

D. Bird