Is it true that all cells are surrounded by a cell wall

Answers

Answer 1
Answer: I think yes and so as other organisim

Answer 2
Answer: Yes, it's true.

I assume you're taking biology so yes.

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An atom has an 16 protons, 18 neutrons, and 13 electrons. What are its atomic number, atomic mass, and net charge?A) atomic number = 16, atomic mass = 34, net charge = 3+
B) atomic number = 16, atomic mass = 34, net charge = 3−
C) atomic number = 34, atomic mass = 16, net charge = 3+
D) atomic number = 34, atomic mass = 16, net charge = 3−

Answers

Atomic number = number of proton = 16

Atomic mass = number of proton + number of neutron = 16+18 = 34

Net charge = Number of proton - number of electron = 16-13 = +3

OPTION A IS YOUR ANSWER....

Put the following organizational hierarchy levels in order from simplest to most complex?Ecosystem
Population
Biome
Organism
Community
Biosphere

Answers

Hey there! 

The organizational hierarchy levels from the simplest to the most complex are: 

1. Organism
2. Population
3. Community
4. Ecosystem
5. Biome
6. Biosphere

Thank you! 

Answer:

4   ecosystem

2    population

5    biome

1     organism

3    community

6    biosphere

Explanation:

I don't know why everyone else wrote it

123456, that's not how we fill it in.... :(

A new highly nutritious crop is going to be planted in an area where it has never been planted before. Which is the most likely outcome of such an event?

Answers

When a highly nutritious crop is newly planted in an area where it has not been planted before, the effect is positive which can change the local biodiversity. This is because a nutritious crop cannot do any harm towards the area and the good thing is the area with no crop of this kind in the past can have new kinds after planting this.

Answer:

c

Explanation:

thats what i got on edg

Which of the following is true about the phosphorylation of proteins?1. Phosphoryation always activates enzymes.
2. Proteins are usually phosphorylated at amino acids that have hydroxyl group-containing side chains.
3. Phosphorylation always decreases the activity of the enzyme.
4. Proteins are usually phosphorylated at the N terminus of the chain.
5. Phosphorylation of proteins is catalyzed by phosphatases.

Answers

Answer:

Proteins are usually phosphorylated at amino acids that have hydroxyl group- containing side chains. Other statements are false. Thus, Option 2 is only true.

Explanation:

Proteins are usually phosphorylated at amino acids that have hydroxyl group- containing side chains which are Serine, Threonine and Tyrosine. Thus, the statement is true.


Phosphorylation can enhance or inhibit the activity of an enzyme but cannot activate enzymes. Therefore, the statement is false.

Phosphorylation can enhance or inhibit the activity of an enzyme but cannot activate enzymes. Thus, phosphorylation does not always decreases the activity of an enzyme.

Phosphorylation at the termini I.e., N terminus of a protein chain is relatively rare and usually involves other types of modification.

Phosphorylation of proteins is catalysed by enzymes called protein kinases. Thus, this statement is also false.


To know more about Phosphorylation,

brainly.com/question/10332475

Final answer:

Phosphorylation of proteins can either activate or inhibit protein function, depending on the specific context and the protein involved. Proteins are usually phosphorylated at amino acids that have hydroxyl group-containing side chains, such as serine, threonine, and tyrosine.

Explanation:

Phosphorylation is a common post-translational modification of proteins, where a phosphate group is added to specific amino acid residues. It is catalyzed by enzymes called kinases, which transfer a phosphate group from ATP to the target protein. Proteins can be phosphorylated at various amino acids, including serine, threonine, and tyrosine. This modification plays a crucial role in regulating protein function and cellular processes.

Contrary to statement 1, phosphorylation does not always activate enzymes. It can have diverse effects on protein activity, stability, localization, and interactions with other molecules. Depending on the specific context and the protein involved, phosphorylation can either activate or inhibit protein function.

Statement 2 is true. Proteins are usually phosphorylated at amino acids that have hydroxyl group-containing side chains, such as serine, threonine, and tyrosine.

Statement 3 is false. Phosphorylation does not always decrease the activity of the enzyme. It can have both activating and inhibitory effects on protein function.

Statement 4 is false. Proteins are not usually phosphorylated at the N terminus of the chain. Phosphorylation can occur at various amino acids throughout the protein sequence.

Statement 5 is false. Phosphorylation of proteins is catalyzed by enzymes called kinases, not phosphatases. Phosphatases are responsible for removing phosphate groups, reversing the phosphorylation.

Learn more about phosphorylation of proteins here:

brainly.com/question/13947490

#SPJ14

Which of the following is considered to be the most significant cause of erosion?a. water
b. ice
c. wind
d. glaciers

Answers

water is the main cause of the erosion in the earth

What's the function of stomata in plants

Answers

Hey There!

Stomata is the process in plants, where the plants use the suns energy and carbon dioxide from the atmosphere, and oxygen is exchanged in return.

Have A Brainly Day!
Plants use their stomata to take in Carbon dioxide and take out oxygen during photosynthesis. It's how they "breathe" if that makes it more understandable.