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arlik [135]
3 years ago
10

What is a system? And what is an ecosystem?

Biology
1 answer:
Nataliya [291]3 years ago
3 0
Ecosystem: a biological community of interacting organisms and their physical environment.
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Spit lab hypothesis
Afina-wow [57]

Answer

The above statement is true.

A spit is formed through wave deposition

Explanation:

-A spit is an extended stretch of beach material that projects out to sea and is joined to the mainland at one end. Spits are also created by deposition.

-Spits are formed where the prevailing wind blows at an angle to the coastline, resulting in longshore drift. An example of a spit is Spurn Head, found along the Holderness coast in Humbersideore Brainlym

7 0
3 years ago
4. A polypeptide has the following amino acid sequence: Met-Ser-Pro-Arg-Leu-Glu-Gly In the mutant below, indicate the type of mu
MatroZZZ [7]

Answer:

4. c. Deletion/ frameshift mutation

5. a. Tyr Tyr Asp Ser Gly

6. A frameshift occurred which altered the identity of the amino acids following the initiator 6. methionine, but not the length of protein Q.

Explanation:

4)

A single base pair at the first position of the Arg codon i.e. CGA has been deleted. Due to the deletion, the reading frame has shifted one nucleotide backwards, altering the amino acid sequence of the protein.

5)

The genomic DNA sequence is 5'-ATG ATA CTA AGG CCC-3'. Therefore, the complementary mRNA will be 5'-UAC UAU GAU UCC GGG-3'. According to the genetic code, this mRNA sequence encodes the following amino acid sequence: Tyr Tyr Asp Ser Gly

6)

The wild type DNA sequence is:

5'-ACUGUAAUGGAGUCAGAUGAUGCAUUAAGGAGAAAUUGAAAUAAA-3'

The mutant i.e. mRNA with the added G will be

5' ACUGUAAUGGGAGUCAGAUGAUGCAUUAAGGAGAAAUUGAAAUAAA-3'  

This is a single base pair insertion and frameshift mutation that shifts the reading frame one base pair forwards. The codon that was originally GAG coding for glutamic acid (Glu) gets converted to GGA that codes for glycine. Therefore, the amino acid sequence has been altered but the polypeptide chain will still have 13 amino acids.

6 0
3 years ago
How would low tide most likely negatively affect the abundance of aquatic organisms?
Art [367]
How would low tide most likely negatively affect the abundance of aquatic organisms?
:Low tide exposes aquatic organisms to air for extended periods of time.

Hope my answer helped!
6 0
3 years ago
Read 2 more answers
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION I WILL MARK YOU BRAINLIEST THANK YOU
valentinak56 [21]
The American public owns all federal public lands, including National Parks, National Forests, Wilderness areas, wild and scenic rivers, and wildlife preserves. Every American has a personal stake and a guaranteed say in how these places are cared for.

I also do Acellus :)
5 0
3 years ago
Which hypothesis is false?
juin [17]

Answer:

#2

Explanation:

I don't really think either of them are false though. They're both technically accurate but I believe it's #2

8 0
3 years ago
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