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Darya [45]
3 years ago
14

Where does the creation of oxygen occur?

Biology
1 answer:
lawyer [7]3 years ago
5 0
If I remember correctly the chloroplast creates oxygen through photosynthesis. The suns energy creates glucose and in return releases oxygen.
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What are the differences between the animal and plant cells? mj fan
Savatey [412]

Answer:

cell wall

Explanation:

plant cells have a cell wall and animals do not

8 0
3 years ago
Read 2 more answers
a) Name the structures that: i) Carry water and mineral salts to the leaf ii) Prevents too much water loss from the upper surfac
const2013 [10]

Answer:

a) i) Xylem

   ii) Upper epidermis  

   iii) Stoma

   iv) Chroloplast  

   v) Palisade cell layer

b) By a waxy layer on the cuticle of the leaf

Explanation:

The plant's leaves have a large surface area that is capable of absorbing sunlight. The plant's waxy layer in the surface of the leaf protects it from the loss of water, as well as of diseases caused by the entry of microorganisms. The palisade cell's surface is a single layer of cells underneath the upper epidermis that is adapted to absorb light energy.

The waxy layer is a primary physical barrier composed of insoluble polymers and lipids whose function is to protect the leaves against the entry of harmful organisms including virus, bacteria and fungus. Moreover, the plant's waxy cuticle is also a barrier that prevents the loss of water and solutes.

3 0
3 years ago
A transcription unit that is 8,000 nucleotides long may use 1,200 nucleotides to make a protein consisting of approximately 400
bearhunter [10]

Answer:

A) many noncoding stretches of nucleotides are present in mRNA.

Explanation:

A transcription unit in eukaryotes includes the region that code for mRNA extending from the 5' cap site to the 3' poly-A site. It also includes the controlling regions. The mRNA formed by transcription also has some non-coding intervening sequences. These are called introns. Introns are removed from the primary transcripts by the process of splicing that occurs after transcription.

Therefore, a transcription unit that is 8,000 nucleotides long may use only 1,200 nucleotides to code for a protein having 400 amino acids since the rest of the nucleotides are part of introns and are removed from mRNA after transcription.

5 0
3 years ago
Environmentalists oppose the mining of antarctic mineral resources because
Llana [10]

Answer:

The Environmental Protocol bans all mineral resource activities in Antarctica (other than scientific research). ... This was because unregulated exploration and mining would have caused serious environmental and political problems.

Explanation:

6 0
2 years ago
What do you call the process of a flower making a seed through pollination?
lozanna [386]

hi!! i think the answer to your question is B. fertilization!!

i hope this helps, good luck!! <3

4 0
3 years ago
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