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IgorC [24]
3 years ago
7

Cells are circular, hollow structures that serve as building blocks of living things. fact or opinion​

Biology
2 answers:
MariettaO [177]3 years ago
7 0

Answer:

<em><u>FACT</u></em>

Explanation:

<h3>Cells as Building Blocks</h3>

<h3>A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms</h3>
Xelga [282]3 years ago
6 0

Answer:

it is a fact

Explanation:

it is a fact because a living things can be composed of either one cell or many cells

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The various parts of the endomembrane system serve different functions in the cell. In this activity, you will identify the role
mixas84 [53]

Answer:

1. protein synthesis - (b) rough ER

2. protein modification and sorting - (c) Golgi apparatus

3. macromolecule digestion - (d) lysosomes

4. lipid synthesis - (a) smooth ER

5. autophagy - (d) lysosomes

6. cisternal maturation - (c) Golgi apparatus

7. calcium ion storage - (a) smooth ER

8. poison detoxification - (a) smooth ER

Explanation:

Rough ER or rough endoplasmic reticulum with the help of ribosomes is responsible for protein synthesis and their subsequent transport to various other parts of the cell that is why both these organelles are also known as protein factory.

Soon after proteins are synthesized with the help of rough ER, they are transported to another network of organelle known as golgi apparatus. In golgi apparatus, the nascent protein is further modified and sorted. Modification and sorting of proteins help in identifying their final destination i.e. whether the protein is meant for mitochondria or plasma membrane or some other organelle. Maturation of cisternae also takes place in golgi apparatus.

Smooth ER or smooth endoplasmic reticulum is responsible for lipid synthesis, storage of calcium ions and poison detoxification. Most of the steroid hormones, triglycerols etc. are synthesized in the smooth endoplasmic reticulum. Smooth ER also stores calcium ions so that whenever they are required they can be sequestered back into the cytosol. Poison detoxification occurs in the smooth ER of liver because the enzymes present in the liver are capable of converting such hydrophobic substances into hydrophilic substances so that they could be easily secreted out of the body.

Lysosome is the organelle which is responsible for macromolecule digestion and autophagy. Lysosomes have very low pH and a lot of hydrolyzing enzymes which can easily digest macromolecules. Autophagy is a self degradable process in which damaged cells are eaten or destroyed by lysosomes so that their macromolecules could be broken down into their monomers so that they can be reused by our body.

3 0
4 years ago
Explain will water move in, out, or both if a cell is placed in a hypertonic solution​
STALIN [3.7K]

Answer:

<em>Water will move out of a cell.</em>

Explanation:

A hypertonic solution will have higher solute concentration and lesser solvent concentration. If a cell is placed in such a solution, then the concentration of the solvent will be more inside of the cell as compared to outside of the cell. As a result, the solvent will move out of the cell. If an excess of solvent is lost, the cell might shrink to dangerous levels.

Hence, from the above description we can justify that water will move out of a cell which is placed in a hypertonic solution.

6 0
3 years ago
Which steps are involved indesalination of water? Check all that apply
umka21 [38]

Answer:

At least three principle methods of desalination exist: thermal, electrical, and pressure. The oldest method, thermal distillation, has been around for thousands of years. In thermal distillation, the water is boiled and then the steam is collected, leaving the salt behind.

Explanation:

Hope this helped

7 0
4 years ago
a classmate states that continental drift could not be possible because it would take far too much force to move tectonic plates
mario62 [17]
Earth is mysterious. But the Continental Drift did happen.
Proofs: All the continents fit together perfectly like a puzzle.

If you put all the continents together certain mountain ranges match up.

<span> A third idea supporting movement of the continents was the glacial till deposits in the southern hemisphere.  With the continents in their present positions, the till deposits indicate erratic glacier motion.  When the continents are fitted together, they show a much more streamlined motion of the glacier from southern Africa and Northern Australia outward.</span>

7 0
4 years ago
Which of the snowshoe rabbit’s unique adaptations help it to survive predation in the taiga?
Vlad [161]
Snowshoe hares undergo seasonal color changes, white for winter snow and brown for spring/summer.
4 0
4 years ago
Read 2 more answers
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