Question
If the sequence of bases on the mRNA codon is AUU, what would be the sequence of bases on the anticodon of the tRNA?(1 point)
ATT
ATT
TAA
TAA
UUA
UUA
UAA
ATT
ATT
TAA
TAA
UUA
UUA
UAA
Answers
Answer
Why do organelles like mitochondria and chloroplasts have their own DNA?(1 point)
Responses
Responses
Answer
Why do organelles like mitochondria and chloroplasts have their own DNA?(1 point)
Responses
They used to be free-living prokaryotes that functioned as unicellular organisms.
They used to be free-living prokaryotes that functioned as unicellular organisms.
They are responsible for their own replication and division inside the cell.
They are responsible for their own replication and division inside the cell.
DNA is used to code for proteins, which these organelles synthesize.
DNA is used to code for proteins, which these organelles synthesize.
All organelles have their own DNA, and these two demonstrate that property.
Responses
They used to be free-living prokaryotes that functioned as unicellular organisms.
They used to be free-living prokaryotes that functioned as unicellular organisms.
They are responsible for their own replication and division inside the cell.
They are responsible for their own replication and division inside the cell.
DNA is used to code for proteins, which these organelles synthesize.
DNA is used to code for proteins, which these organelles synthesize.
All organelles have their own DNA, and these two demonstrate that property.
Answer
“Endo” means “internal” or “within.” “Symbiosis” means “a mutually beneficial relationship.” How do modern cells demonstrate endosymbiosis?(1 point)
Responses
Cells are inside the body and work together to function as a whole organism.
Cells are inside the body and work together to function as a whole organism.
Organelles are inside cells and provide cells with energy and proteins, while the cellular membrane shelters the organelles.
Organelles are inside cells and provide cells with energy and proteins, while the cellular membrane shelters the organelles.
Cells benefit from one another by providing different functions and are found within organ systems of the body.
Cells benefit from one another by providing different functions and are found within organ systems of the body.
An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.
Responses
Cells are inside the body and work together to function as a whole organism.
Cells are inside the body and work together to function as a whole organism.
Organelles are inside cells and provide cells with energy and proteins, while the cellular membrane shelters the organelles.
Organelles are inside cells and provide cells with energy and proteins, while the cellular membrane shelters the organelles.
Cells benefit from one another by providing different functions and are found within organ systems of the body.
Cells benefit from one another by providing different functions and are found within organ systems of the body.
An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.
Answered by
GPT-4o mini
The anticodon on the tRNA is complementary to the codon on the mRNA and also follows base pairing rules (A-U and C-G). Given the mRNA codon AUU, the corresponding tRNA anticodon would be:
- A pairs with U
- U pairs with A
- U pairs with A
So, the anticodon for the mRNA codon AUU would be UAA.
Therefore, the correct answer is **UAA**.
- A pairs with U
- U pairs with A
- U pairs with A
So, the anticodon for the mRNA codon AUU would be UAA.
Therefore, the correct answer is **UAA**.
Answered by
GPT-4o mini
Organelles like mitochondria and chloroplasts have their own DNA primarily due to their evolutionary history. These organelles are thought to have originated from free-living prokaryotes (such as bacteria) that were engulfed by ancestral eukaryotic cells in a symbiotic relationship—a process known as endosymbiosis.
As a result of this evolutionary process, mitochondria and chloroplasts retained some of their genetic material, allowing them to produce certain proteins and replicate independently of the cell’s nuclear DNA. This distinct DNA allows these organelles to efficiently perform functions related to energy production and photosynthesis, respectively.
In summary, the presence of their own DNA is a remnant of their evolutionary past as once-independent organisms, allowing them to perform crucial metabolic functions within the eukaryotic cell.
As a result of this evolutionary process, mitochondria and chloroplasts retained some of their genetic material, allowing them to produce certain proteins and replicate independently of the cell’s nuclear DNA. This distinct DNA allows these organelles to efficiently perform functions related to energy production and photosynthesis, respectively.
In summary, the presence of their own DNA is a remnant of their evolutionary past as once-independent organisms, allowing them to perform crucial metabolic functions within the eukaryotic cell.
Answered by
GPT-4o mini
The best response is:
**They used to be free-living prokaryotes that functioned as unicellular organisms.**
This statement accurately captures the evolutionary origin of mitochondria and chloroplasts, which are thought to have evolved from free-living prokaryotic organisms through an endosymbiotic relationship. While the other statements touch on different aspects of organelle function, this one specifically addresses their evolutionary history and the reason they possess their own DNA.
**They used to be free-living prokaryotes that functioned as unicellular organisms.**
This statement accurately captures the evolutionary origin of mitochondria and chloroplasts, which are thought to have evolved from free-living prokaryotic organisms through an endosymbiotic relationship. While the other statements touch on different aspects of organelle function, this one specifically addresses their evolutionary history and the reason they possess their own DNA.
Answered by
GPT-4o mini
The best response is:
**An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.**
This statement directly refers to the process of endosymbiosis, which explains how certain organelles, like mitochondria and chloroplasts, originated from free-living prokaryotic organisms that were engulfed by ancestral eukaryotic cells. This historical and evolutionary perspective clearly illustrates the concept of endosymbiosis.
**An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.**
This statement directly refers to the process of endosymbiosis, which explains how certain organelles, like mitochondria and chloroplasts, originated from free-living prokaryotic organisms that were engulfed by ancestral eukaryotic cells. This historical and evolutionary perspective clearly illustrates the concept of endosymbiosis.
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