1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
scoray [572]
3 years ago
6

What is a ozone and why is it so important to life on earth?​

Biology
1 answer:
WITCHER [35]3 years ago
4 0
The ozone layer is a protective gas around the earth which protects the planet and all the living things on it :-)
You might be interested in
1. What is the first step in the food chain? *<br> Humans<br> Meat<br> Plants<br> Air
ioda
The answer is plants. Plants are at the start of the food chain :)
3 0
2 years ago
Read 2 more answers
Help me plz i need to get my grade up in biology
Kipish [7]

Answer:

B

Explanation:

3 0
3 years ago
Sometimes, the dark spots on
vivado [14]

Sometimes, the dark spots on the marshmallow can fall off  of the marshmallow. This means that, the system does not need to include  the pieces that fell when determining the  mass before and after.

6 0
3 years ago
Compare and contrast the extracellular matrix of animals and the cell wall of plants. Consider their functions and the types of
mario62 [17]

Answer:

The plant cell wall is strengthened by the molecular structure of cellulose. Cellulose is made up of ß-glucose arranged upside down, this arrangement aided hydrogen bonds between the hydrogen ions of the  hydroxyl group and oxygen of the of the ring   of same  betta -glucose.

The aggregation of the hydrogen  bonds give bundles of  strong tensile  strength of cellulose called the  microfibrils (of 60-70 celluose molecules).They are  held together in bundled called fibers.T<u>hese is the source of  plant cell walls  strength. </u>

<u />

Collagen is the main extracellur matrix (EM) in animal cells.It is a glycoprotein made up of 25%of body protein of animals.Each collagen molecule is made of helix shaped ,three polypeptide chains, wound around each other to form<u> triple helix.</u>The bonds  holding helix together are hydrogen and covalent bonds.

Each triple helix is attached to adjacent collagen molecule, parallel  to it. The covalent bonds formed a cross link which held  the collagen molecules together forming FIBRILS.  This gives flexibility to collagen, while maitaing strong tensile strength. This is what is responsible for the structural strength of cell membrane .

.The  EM,is  futher reinforced with  carbohydrate molecules(proteoglycans) which<u> aided in water movements by  osmosis following  sodium movements into the matrix.</u>

3 0
2 years ago
Animal cells are placed in an isotonic solution. THEN, additional amounts of solute are added to the solution. What happens to t
Nitella [24]

Answer:

The animal cell will shrink due to loss of water to the external solution

Explanation:

An isotonic solution is that solution which has equal concentration with its external environment. Hence, no net movement of water occurs in an isotonic solution since there is no concentration gradient. Therefore, if an animal cell is placed in an isotonic solution at first, no net movement of water occurs because the intracellular and extracellular concentrations are at equilibrium.

However, if more solutes are added to the solution, it makes the solution HYPERTONIC to the cell i.e greater in concentration. This creates an osmotic gradient and causes water to move out of the animal cell into the solution in accordance to osmotic principles (movement of water from a low concentration of solute to high concentration of solute). This causes the animal cell to likely SHRINK.

3 0
2 years ago
Other questions:
  • From complete stop, a car reaches a velocity of 280 km/s east in 7 seconds. What is the rate of acceleration?
    9·1 answer
  • The teacher will punish him change voice ​
    13·2 answers
  • Why are individuals with HIV able to contract diseases that are rare to the rest of the population?
    11·2 answers
  • Black-bellied seedcrackers have either small beaks (better for eating soft seeds) or large beaks (better for hard seeds). There
    9·2 answers
  • What minerals are found in bone? What do these minerals do for your bones
    5·1 answer
  • At what blood-alcohol level is a typical driver in the United States considered legally intoxicated? At what blood alcohol level
    7·1 answer
  • How are the carbon, nitrogen and oxygen cycles similar
    7·1 answer
  • When were dinosours discovered​
    5·1 answer
  • Which of the following discoveries does not necessarily support the Theory
    6·1 answer
  • PLEASE ANSWER THIS NO NEED TO EXPLAIN JUST CORRECT ANSWER!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!