The correct answer is Endoplasmic Reticulum. After the amino acid chain leaves the ribosome, the protein is typically folded, modified, and transported by the endoplasmic reticulum (ER).
After the amino acid chain leaves the ribosome, which organelle then folds, modifies, and transports the protein?(1 point)
Responses
Cytoplasm
Cytoplasm
Ribosome
Ribosome
Lysosome
Lysosome
Endoplasmic Reticulum
9 answers
Look at the DNA sequence.
C G T T A C T G C A A T
G C A A T G A C G T T A
Which sequence shows a substitution mutation?
(1 point)
Responses
C G T C T A C T G C A A T
G C A G A T G A C G T T A
C G T C T A C T G C A A T G C A G A T G A C G T T A
C G T T A C T G C A A T
G C A A T G A C G T T A
C G T T A C T G C A A T G C A A T G A C G T T A
C G T G A C T G C A A T
G C A C T G A C G T T A
C G T G A C T G C A A T G C A C T G A C G T T A
C G T A C T G C A A T
G C A T G A C G T T A
ABC or D
C G T T A C T G C A A T
G C A A T G A C G T T A
Which sequence shows a substitution mutation?
(1 point)
Responses
C G T C T A C T G C A A T
G C A G A T G A C G T T A
C G T C T A C T G C A A T G C A G A T G A C G T T A
C G T T A C T G C A A T
G C A A T G A C G T T A
C G T T A C T G C A A T G C A A T G A C G T T A
C G T G A C T G C A A T
G C A C T G A C G T T A
C G T G A C T G C A A T G C A C T G A C G T T A
C G T A C T G C A A T
G C A T G A C G T T A
ABC or D
A substitution mutation occurs when one base in the DNA sequence is replaced by another.
Let's analyze the provided options:
-
Option A:
- Original sequence: C G T T A C T G C A A T
- Mutated sequence: C G T C T A C T G C A A T (the second base changed from T to C)
- This shows a substitution mutation.
-
Option B:
- Original sequence: C G T T A C T G C A A T
- Mutated sequence: C G T T A C T G C A A T (no changes)
- No mutation.
-
Option C:
- Original sequence: C G T T A C T G C A A T
- Mutated sequence: C G T T A C T G C A A T (no changes)
- No mutation.
-
Option D:
- Original sequence: C G T T A C T G C A A T
- Mutated sequence: C G T A C T G C A A T (the second base changed from T to A)
- This shows a substitution mutation.
-
Option E:
- Original sequence: C G T T A C T G C A A T
- Mutated sequence: C G T G A C T G C A A T (the fifth base changed from T to G)
- This shows a substitution mutation.
From the analysis, Options A, D, and E show substitution mutations. If you're looking for just one specific instance, it appears there might be a confusion in the phrasing of the question. Could you clarify which single answer you're looking for if aiming for a specific one or if multiple answers are acceptable?
If forced to choose just one, Option A would fit the definition.
only one
If only one substitution mutation is to be identified from the options, the answer is:
Option A:
- Original sequence: C G T T A C T G C A A T
- Mutated sequence: C G T C T A C T G C A A T
This option shows a clear substitution mutation, where the T was replaced by a C.
Which of the following best describes how a liver cell and skin cell have the exact same DNA sequence and yet look different and perform different functions?(1 point)
Responses
The cells discard the DNA that is not in use.
The cells discard the DNA that is not in use.
The tRNA uses a different sequence in each cell during transcription.
The tRNA uses a different sequence in each cell during transcription.
The proteins are expressed differently in each cell.
The proteins are expressed differently in each cell.
The cells mutate during transcription.
Responses
The cells discard the DNA that is not in use.
The cells discard the DNA that is not in use.
The tRNA uses a different sequence in each cell during transcription.
The tRNA uses a different sequence in each cell during transcription.
The proteins are expressed differently in each cell.
The proteins are expressed differently in each cell.
The cells mutate during transcription.
The best response to describe how a liver cell and a skin cell can have the same DNA sequence yet look different and perform different functions is:
The proteins are expressed differently in each cell.
This explains that while both cell types contain the same DNA, they express different sets of genes, leading to the production of different proteins that determine their structure and function.
Stella described protein synthesis as a process that makes the necessary proteins for the human body to function. She explained the process in the following steps.
DNA is transcribed into mRNA.
Amino acids form a chain.
The amino acid chain is folded into a protein in the endoplasmic reticulum.
What step did Stella miss in her explanation?
(1 point)
Responses
mRNA is translated into amino acids.
mRNA is translated into amino acids.
DNA is replicated into two daughter cells.
DNA is replicated into two daughter cells.
Polypeptide chains express gene traits.
Polypeptide chains express gene traits.
tRNA delivers the DNA to the ribosome.
DNA is transcribed into mRNA.
Amino acids form a chain.
The amino acid chain is folded into a protein in the endoplasmic reticulum.
What step did Stella miss in her explanation?
(1 point)
Responses
mRNA is translated into amino acids.
mRNA is translated into amino acids.
DNA is replicated into two daughter cells.
DNA is replicated into two daughter cells.
Polypeptide chains express gene traits.
Polypeptide chains express gene traits.
tRNA delivers the DNA to the ribosome.
The step that Stella missed in her explanation of protein synthesis is:
mRNA is translated into amino acids.
This step is essential, as it describes the process in which the information carried by the mRNA is read by ribosomes to assemble the corresponding amino acids into a polypeptide chain.