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mash [69]
3 years ago
15

Which one of these is the coolest layer of earth

Biology
1 answer:
abruzzese [7]3 years ago
5 0

Answer:

crust

Explanation:

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Weathering and heat desposition
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What use one reason the air in cities is often polluted
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cars are generally older

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Some orchids produce two types of flowers, one with only anthers and the other with only carpels. And on some orchids like this,
aliina [53]

Answer:

The Orchids is the diversified structures of flowers, in fact, they have unique feature. Even with the pollination, they have several mechanisms of pollination. Few of them include:  

1. Few orchids have self-fertilization where the anther converts from solid-state to a liquid state without any aid of an external pollinating agent.  

2. In others, self-pollination occurs, when the caudicles dry the pollen fall on the stigma.  

3. This happens through an external pollinator resulting in a diversity of species.  

4. This is a very special case where the flower attracts the insect to mate with bright petals, odor, and the shape.  

5. These types depend on ants and other insects to get pollinated.

6. Here, the pollens release some kind of force, when an insect gets in contact with anther which results in getting away the agent from the flower.

4 0
2 years ago
Please help asap with 14
tester [92]

Answer:

D

Explanation:

Co-dominance is when both alleles combine to form an intermediate phenotype. It's like crossing a red and white flower and getting a pink flower.

4 0
3 years ago
Determine whether the following events occur during initiation, elongation, or termination. This is regarding protein synthesis.
erik [133]

Answer:

The provided events can be classified as:

Initiation

  • In prokaryotes, the Shine-Dalgarno sequence pairs with rRNA.
  • In E. coli, mRNA binds to the 30S ribosomal subunit.

Elongation

  • In E. coli, EF-Tu delivers an aminoacyl-tRNA to the ribosome
  • Initiator tRNA enters the P site.
  • In E. coli, EF-Tu hydrolyzes.
  • Translocation occurs

Termination

  • The ribosome has mRNA, an empty A site, and deacylated tRNA in the P site

Translation is the process by which polypeptide chain is synthesized based on the codon sequence of the mRNA (messenger ribonucleic acid).

It is divided into three stages:

Initiation: The small and large sub-units of the ribosome get assembled around the initiation codon. It forms three sites (A, P, and E site) for interaction tRNA and mRNA.

Elongation: Specific charged-tRNA enters from A site and transfers its amino acid to the growing polypeptide chain in P site. Uncharged tRNA exit from the E site. Ribosome moves or translocates to the next  codon.

Termination: As soon as ribosome reaches the termination codon, it releases the newly synthesized polypeptide chain.


8 0
3 years ago
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