Humans have bones and muscles that help us move. What structure protects insects and gives them structure?

A.
skin

B.
rigid tubes

C.
exoskeleton

D.
other muscles

Question

Humans have bones and muscles that help us move. What structure protects insects and gives them structure?	
 
 A.
skin
 
 B.
rigid tubes
 
 C.
exoskeleton
 
 D.
other muscles

taylor0402 · Answer

C is the only one that would make sense here

aaalive · Answer

thanks b0ss

taylor0402 · Answer

need any more help

aaalive · Answer

yeah, why not. give me a sec

taylor0402 · Answer

and you know there is a science section right

aaalive · Answer

yeah, butt there is rarely anyone there

taylor0402 · Answer

oh ok then whatcha need help with my friend

aaalive · Answer

heh, the name of this test is Lesson Assessment:  LAB: Chicken Wing Anatomy

taylor0402 · Answer

hey are you home schooled

aaalive · Answer

yup

taylor0402 · Answer

do you do k12 maybe 7th grade

aaalive · Answer

yus

aaalive · Answer

What is the primary role of the respiratory system in living organisms?	
 
 A.
to make carbon dioxide
 
 B.
to obtain oxygen
 
 C.
to use up nitrogen
 
 D.
to find hydrogen

taylor0402 · Answer

ok thats crazy...i do k12 to but i am in 8th grade

aaalive · Answer

kool

taylor0402 · Answer

B. To obtain oxygen.  Organisms cannot live without oxygen  being brought into their bodies.  Through respiration, the carbon dioxide that is being stored up in the body is released when you exhale and oxygen is being brought into your system when you inhale to be delivered to the blood stream which will in turn take it to the portions of the body in which it needs to go. \

aaalive · Answer

Humans breathe through bronchi. What structure do insects have for breathing?	
 
 A.
gills
 
 B.
tracheae
 
 C.
skin
 
 D.
lungs

taylor0402 · Answer

Instead of lungs, insects breathe with a network of tiny tubes called tracheae. Air enters the tubes through a row of holes along an insect's abdomen. The air then diffuses down the blind-ended tracheae. Since the biggest bugs have the longest tracheae, they should need the most oxygen to be able to breathe.

aaalive · Answer

In which part of the human respiratory system does actual oxygen exchange take place?	
 
 A.
bronchi
 
 B.
trachea
 
 C.
diaphragm
 
 D.
alveoli
Is this one "D"?

taylor0402 · Answer

sorry but i gtg good luck with the rest of your questions...and yes its D

aaalive · Answer

okay, have a nice night/ day