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Monica [59]
3 years ago
15

Describe the theory of Alkaline Vents. What do you think about this? What is one major piece of evidence to support this theory?

What is one major flaw with this theory (something happened that would have likely wiped out living things)?
Biology
1 answer:
gizmo_the_mogwai [7]3 years ago
3 0
<span>The theory of Alkaline Vents theorizes that life originated deep under the sea around hydrothermal vents. This could be likely because these vents provide plentiful methane and ammonia. Critics, however, point out that high temperatures are not conducive to organic life.</span>
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The following DNA non-template sequence (coding sequence) is transcribed from left to right. Use the sequence to determine the t
amm1812

Answer:

(A) A transversion base substitution causing a missense mutation

(B) A transition base substitution causing a silent mutation

(C)  A transversion base substitution causing a silent mutation

Explanation:

There are two types of base substitutions, transversions and transitions. A transition is when the a purine base is substituted with another purine base or a pyrimidine base is substituted with a pyrimidine base (e.g. Purines - A to G; G to A;  Pyrimidines - C to T; T to C). A transversion occurs when a purine base is substituted with a pyrimidine base or a pyrimidine base is substituted with a purine base (e.g. A to T; C to A).

There are three main types of mutations, these are missense mutations, nonsense mutations and silent mutations. Missense mutations occur when a base is changed and the codon now codes for a different amino acid to before the mutation. Nonsense mutations occur when a base is changed and now the codon codes for a stop codon causing a premature stop of the translation process. Silent mutations occur when a base is changed but the new codon still codes for the same amino acid as before the mutation.

8 0
3 years ago
Which of the following accurately describes an example of a vestigial structure?
garri49 [273]

Answer:

A patient is having severe abdominal pain due to a ruptured appendix. The patient has an appendectomy, in which the

appendix is removed. The patient recovers and notices no life changes due to this surgery.

8 0
3 years ago
Animals in the food chain need to eat less food than the animal in the previous level did to stay alive. True or False?
Volgvan
I would say true because for them life will not go on and the animal that is eating another animal there will not be no more of them and they will all die off
8 0
3 years ago
Read 2 more answers
Only the water of marine ecosystems contains dissolved salt.
nata0808 [166]

Answer:This is false.

Explanation: Dissolved Salt can be found in a variety of water and marine ecosystems.

5 0
4 years ago
Fungi are a diverse group of organisms that include mushrooms and yeast. Which of the following is true about fungi?
erik [133]

Answer:

C. Fungi do not make their own food.

Explanation:

Fungi are eukaryotic organisms that do not produce their own food. Contrary to popular belief, fungi are neither plants nor classified in the same realm as they. Fungi have very different characteristics, so they were separated into a kingdom of their own: the Fungi Kingdom.

It should be noted that not all fungi are useful to humans and not all fungi are harmful to humans.

In the wild we find unicellular fungi and multicellular fungi, and most species live in the soil, feeding on animal and plant corpses. Other fungal species feed on living organic matter, causing disease in animals and plants and the rotting of fruits and vegetables.

7 0
3 years ago
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