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Ganezh [65]
3 years ago
9

What is the significance of chitin in arthropods?

Biology
1 answer:
spin [16.1K]3 years ago
6 0
Chitin is a structural carbohydrate that forms their exoskeleton.
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why is tetracycline selectively toxic against bacteria Eukaryotic cells will enzymatically destroy the drug. Eukaryotic cells wi
IrinaVladis [17]

Answer:

The correct answer is The drug binds to the 30S small ribosomal  subunit eukaryotes have 40S small sub unit.

Explanation:

Tetracycline belongs to broad spectrum antibiotic.Tetracycline is named so because it contain a derivative of four hydrocarbon rings.

 Tetracycline act by inhibiting the protein synthesis process in prokatotes by binding to the small ribosomal subunit also called 30S subsunit and blocks the binding of amino acyl tRNA to the A site or attachment site of ribosome.

 As eukaryotes contain 40S ribosomal  subunit,it becomes difficult for tetracycline to bind with 40S ribosomal subunit of eukaryotes.

 

6 0
3 years ago
Distinguish between voluntary and involuntary actions.
sukhopar [10]
<h2>GREETINGS!</h2><h2>_____________________________________</h2>

<u>ANSWER</u><u>:</u>

<h2><u>DEFINITIONS</u></h2><h2>_____________________________________</h2><h3><u>VOLUNTARY MUSCLES:</u></h3>

Voluntary muscles are those muscles which work under our conscious control and can be controlled at will also we can choose choose them when to use and when not to use. These are simply SKELETAL MUSCLES attached to the bone, so all the movements of hand and legs and whatever u do are because of voluntary muscles.

<h3><u>__________________________________________________</u></h3><h3><u>INVOLUNTARY MUSCLES:</u></h3>

the muscles in the human body that do not work under our will and we cant control them. They are mainly controlled by the autonomic nervous system in the body. So, involuntary muscles include all the muscles whose activity which is not controlled by our NERVES. They are also called SMOOTH MUSCLES since they are present as the visceral layer over the organs.

<h2>_____________________________________</h2><h2>DIFFERENCES</h2>

1)      VOLUNTARY MUSCLES are under our control but INVOLUNTARY                 MUSCLES are not under our control

2)      VOLUNTARY MUSCLES are also known as skeletal muscles but INVOLUNTARY MUSCLES are also known as smooth muscles

3)      VOLUNTARY MUSCLES are attached to the bones in the body, but INVOLUNTARY MUSCLES are attached to the soft hollow internal organs.

4)      VOLUNTARY MUSCLES are controlled by the somatic nervous system. INVOLUNTARY MUSCLES are controlled by the autonomic nervous system.

5)      VOLUNTARY MSUCLES  require more energy. INVOLUNTARY MUSCLES require less energy.

<h2>_____________________________________</h2><h2>HOPE THIS HELPS!</h2><h2 />

8 0
2 years ago
if you were to grill a steak, would it be better to put salt on before or after you cooked it? explain why in terms of osmosis
LUCKY_DIMON [66]
I think it'd be better to do it before you grill it cause while its on the grill it'll soak up all the seasonings and make it better tasting then it would if you would have salted it afterwards
7 0
3 years ago
Read 2 more answers
What’s the correct choice?<br><br><br> bio
dmitriy555 [2]

Answer:

I think the third one......

7 0
2 years ago
Read 2 more answers
Aslan-style gardens are an example of which kind of design
KonstantinChe [14]

Asian-style gardens includes vibrant colors and also have balance between elements of nature. It is an example of Mediterranean design, i.e., option C.

<h3>What is Mediterranean design?</h3>

The Mediterranean style is featured by simple and romantic features of Southern European countries.

It includes light and warm shades in color scheme, and use of natural materials such as ceramics, wood, wrought iron and cotton.

Asian-style gardens are the examples of this design.

Thus, the correct option is C.

For more details regarding Mediterranean design, visit:

brainly.com/question/2088854

#SPJ1

6 0
2 years ago
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