explain the scientific theory of evolution and the evidence scientist found that proves it to be valid ?

Answers

Answer 1
Answer:

Answer:

There are many theories

But main evidences are

  1. Fossils of Plants animals and other organisms who lived on this planet at sometime.
  2. Oprain And Halden theory which suggests the chemical and biological evolution.

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You are studying primates in West Africa and discover a small population of monkeys in an isolated forest. They resemble a species that lives about 50 kilometers away, across a river. The main difference appears to be white tufts of fur underneath the ears in the new population you've found. What evolutionary mechanism probably explains this difference?

Answers

Answer:

Geographical isolation

Explanation:

The evolutionary mechanism that can probably explain the difference, in this case, is geographical isolation.

Geographical isolation represents one of the reproductive isolation mechanisms - an array of physiological and behavioural processes that leads to speciation in living organisms.

Geographical isolation refers to the separation of organisms of the same species in terms of physical geographical features such as distance, mountains, water bodies, etc. The separation causes each group to take different adaptive paths, eventually leading to speciation, that is, they become separate species.

In this case, the small population of monkeys in the isolated forest must have been geographically isolated from their counterparts in some ways back. They took a different adaptive path from the larger group as a result of geographical difference and eventually became a new species.

Bacteria in your lab are grown under two conditions, one with exposure to glucose and the other with lactose. what best describes the effects glucose will have upon the enzymes used to metabolize lactose?

Answers

It seems that you have missed the given options for this question, but anyway, here is the answer. I believe that the statement that best describes the effects glucose will have upon the enzymes used to metabolize lactose is that Glucose repression stops the lac operon from being induced. Hope this is the answer you are looking for.

Instructions:Drag each tile to the correct box.Arrange these steps related to climate change in the correct order.

Sequence
Snow and ice
Global temperatures rise
Sea level rises
Sources emit greenhouse gases

Answers

Sources emit greenhouse gases.

Global temperature rises.

Snow and ice.

Sea level rises.

 

Climate change is the critical alteration in the measures ofclimate, such as temperature, rainfall, or wind lasting for an drawn-outperiod. It can result  from factors morerecently from human exercises through greenhouse gas emissions. The"greenhouse effect" changes the composition of the atmosphere and trapsheat increasing the global average temperatures. Snow and ice, which helpsregulate the Earth's surface temperature, melts and fills reservoirs and otherbodies of water, causing a rise in sea level.

15. The complex carbohydrates pictured below are made by linkingmolecules of glucose. In all three complex carbohydrates, the subunits of
glucose are bonded together differently. Because they have different
structures, they most likely - *
Starch
Cellulose
Glycogen

Answers

The complex carbohydrates pictured below are made by linking

molecules of glucose is Starch. Option A

What are carbohydrates?

Starch is formed through a process called photosynthesis in plants. Photosynthesis is the biochemical process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy stored in the form of glucose and other sugars. Starch serves as a primary storage form of this glucose in plants.

The linking together of the carbohydrates is what would lead to the starch formation.

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Answer:

they perform different functions

6 steps of translation in order biology

Answers

Answer:

step 1: mRNA attaches to the ribosome

step 2: tRNA's attach to free amino acids in the cytoplasmic "pool" of amino acids

step 3: tRNA carries its specific amino acid to the ribosome

step 4: tRNA "delivers" its amino acid based on complementary pairing of a triplet code (anticodon) with the triplet code (codon) of the mRNA

step 5: Enzyme "hooks" the amino acid to the last one in the chain forming a peptide bond

step 6: Protein chain continues to grow as each tRNA brings in its amino acid and adds it to the chain

Final answer:

Translation in biology involves converting the mRNA transcript, which comes from DNA, into a protein through six stages: Initiation, tRNA elongation, amino acid bonding, mRNA shift & release, arrival of the next tRNA, and termination with a 'stop' codon.

Explanation:

In biology, the process of translation converts the sequence of codons in mRNA, obtained from DNA transcription, into an amino acid chain or a protein. This process occurs in six primary steps:

  1. Initiation: The ribosome binds to the mRNA transcript.
  2. Elongation: tRNA anticodon recognizes the next mRNA codon in the sequence, allowing the tRNA to present its amino acid.
  3. Amino Acids Bonding: With the help of enzymes and energy, the growing polypeptide chain attaches to the amino acid presented by tRNA.
  4. Shift & Release: The tRNA molecule then lets go of the mRNA strand, and the mRNA strand shifts one codon over in the ribosome.
  5. Next tRNA Arrival: The next tRNA arrives with its matching anticodon.
  6. Termination: A 'stop' codon on the mRNA triggers termination, initiating the release of the new protein.

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Phenacetin can be made using either the Williamson ether synthesis or the amide synthesis.a. True
b. False

Answers

Answer:

True

Explanation:

Phnacetin can be produced using Williamson-ether synthesis. In this, phenacetin is derived from acetaminophen and the reaction involve interaction of alkoxide or phenoxide with a methyl or primary alkyl halide

In amide synthesis mechanism, acetic anhydride and phenetidine (p-ethoxyaniline)  react to phenacetin through a  nucleophilic acyl substitution

Hence, the given statement is true