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soldier1979 [14.2K]
3 years ago
14

Which statement explains a difference between a cell wall and a cell membrane?

Biology
1 answer:
lyudmila [28]3 years ago
3 0

Answer:

B cell membranes protect a cell,and cell walls do not

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Converts food into energy. it is found in both plant cells and animal cells
katrin2010 [14]
The mitochondria converts food into energy
5 0
3 years ago
Iron reacts with atmospheric oxygen to form iron oxide or ferric oxide. Look at the chemical equation for this reaction:
kondaur [170]

Answer:

4 Fe + 3 O₂ → 2 Fe₂O₃

Explanation:

Let's start with the oxygen.

Reactants - 2

Products - 3

What number do 2 and 3 have in common? 6.

Put a 3 in the reactants and a 2 in the products to balance the oxygen.

Fe + 3 O₂ → 2 Fe₂O₃

Now let's look at the iron.

Reactants - 1

Products - 4

Put a 4 in the reactants to balance the iron.

4 Fe + 3 O₂ → 2 Fe₂O₃

The equation is balanced. Hope that helps.

8 0
3 years ago
How many neutrons does this atom have?<br><br> 4<br> 6<br> 10<br> 14
loris [4]

Answer:

I believe there are 6

Explanation:

Protons are the positively charged circles (blue)

Neutrons are the Neutral  (red)

and the others (green) are called electrons

5 0
2 years ago
Read 2 more answers
Plant and animal cells both have
aev [14]

Answer:

A nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, and lysosomes.

Explanation:

8 0
3 years ago
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I’ll mark brainliest pls help ❤️
arsen [322]

Answer:

1. Radiometric dating

2. Relative dating is used to determine the age of fossils or rock layers by by comparing it to similar rocks and fossils of known ages.

3. The youngest rock layers are at the top and the oldest are at the bottom, which is according to the law of superposition.

4. Tribolite and Pecten fossils

Fossils are used to determine the ages of rock layers. Index fossils are the most useful in determining relative aging. Index fossils are of organisms that lived for a short period of time. An index fossil allows a scientist to determine the age of the rock it is in. So if they are found in a particular age, it means they belong in that age.

5. Scientists commonly use radioactive dating methods by using radioactive decay cloak of certain elements such as potassium or carbon to date fossils or rocks.

6. Law of superposition because in terms of finding the age of the rock as an object, all that needs to be identified are the layers of the rock.

7. The nuclear decay of radioactive elements are a process that behaves in a clock-like fashion which makes it a useful tool for determining the exact age of fossils or rocks.

4 0
3 years ago
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