If the sequence of bases on the mRNA codon is AUU, what would be the sequence of bases on the opposite strand assembled by the tRNA?(1 point)
Responses
ATT
ATT
TAA
TAA
UUA
UUA
UAA
UAA
The sequence of bases on the opposite strand assembled by the tRNA would be UAA.
The endomembrane system is a collection of membrane-bound organelles in eukaryotic cells that handles the production and processing of proteins that will be used in organelles or exported to the outside of the cell. The rough endoplasmic reticulum, Golgi apparatus, and smooth endoplasmic reticulum all have parts to play in this system. These functions are __________, respectively.
Identify the answer choice that correctly fills in the blank in the above passage.
(1 point)
Responses
DNA packaging, DNA making, and DNA storing
DNA packaging, DNA making, and DNA storing
DNA making, DNA packaging, and DNA storing
DNA making, DNA packaging, and DNA storing
protein packaging, protein making, and lipid production
protein packaging, protein making, and lipid production
protein making, protein packaging, and lipid production
The correct answer choice that fills in the blank is "protein making, protein packaging, and lipid production."
Structures of the Cell Quick Check
3 of 53 of 5 Items
Question
Why do organelles like mitochondria and chloroplasts have their own DNA?(1 point)
Responses
All organelles have their own DNA, and these two demonstrate that property.
All organelles have their own DNA, and these two demonstrate that property.
DNA is used to code for proteins, which these organelles synthesize.
DNA is used to code for proteins, which these organelles synthesize.
They are responsible for their own replication and division inside the cell.
They are responsible for their own replication and division inside the cell.
They used to be free-living prokaryotes that functioned as unicellular organisms.
The correct answer choice is "They used to be free-living prokaryotes that functioned as unicellular organisms."
“Endo” means “internal” or “within.” “Symbiosis” means “a mutually beneficial relationship.” How do modern cells demonstrate endosymbiosis?(1 point)
Responses
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.
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.
An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.
An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.
Organelles are inside cells and provide cells with energy and proteins, while the cellular membrane shelters the organelles.
The correct answer choice is "An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other." This describes the process of endosymbiosis, where one cell engulfs another and they develop a mutually beneficial relationship.
Louis Pasteur made several major contributions to microscopy. Which was a discovery or invention made by someone other than Pasteur?(1 point)
Responses
He created vaccines against rabies and anthrax.
He created vaccines against rabies and anthrax.
He developed a process to make cow’s milk safe to drink.
He developed a process to make cow’s milk safe to drink.
He proved microorganisms cause fermentation and disease.
He proved microorganisms cause fermentation and disease.
He was the first to view a bacterium.
The correct answer is "He was the first to view a bacterium." This discovery was made by Antonie van Leeuwenhoek, not Louis Pasteur.
If the sequence of bases on the mRNA codon is AUU, what would be the sequence of bases on the opposite strand assembled by the tRNA?(1 point)
Responses
UAA
UAA
UUA
UUA
ATT
ATT
TAA
The correct sequence of bases on the opposite strand assembled by the tRNA would be UAA.
The endomembrane system is a collection of membrane-bound organelles in eukaryotic cells that handles the production and processing of proteins that will be used in organelles or exported to the outside of the cell. The rough endoplasmic reticulum, Golgi apparatus, and smooth endoplasmic reticulum all have parts to play in this system. These functions are __________, respectively.
Identify the answer choice that correctly fills in the blank in the above passage.
(1 point)
Responses
DNA packaging, DNA making, and DNA storing
protein making, protein packaging, and lipid production
DNA making, DNA packaging, and DNA storing
The correct answer that fills in the blank is "protein making, protein packaging, and lipid production."
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.
All organelles have their own DNA, and these two demonstrate that property.
All organelles have their own DNA, and these two demonstrate that property.
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.
The correct answer is "They used to be free-living prokaryotes that functioned as unicellular organisms."
Structures of the Cell Quick Check
4 of 54 of 5 Items
Question
“Endo” means “internal” or “within.” “Symbiosis” means “a mutually beneficial relationship.” How do modern cells demonstrate endosymbiosis?(1 point)
Responses
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.
An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.
An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other.
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.
Cells are inside the body and work together to function as a whole organism.
The correct answer is "An amoeba-like organism engulfed prokaryotes, and they eventually became cells, one inside the other." This describes the concept of endosymbiosis, where one organism engulfs another and they establish a mutually beneficial relationship.
Louis Pasteur made several major contributions to microscopy. Which was a discovery or invention made by someone other than Pasteur?(1 point)
Responses
He was the first to view a bacterium.
He was the first to view a bacterium.
He developed a process to make cow’s milk safe to drink.
He developed a process to make cow’s milk safe to drink.
He proved microorganisms cause fermentation and disease.
He proved microorganisms cause fermentation and disease.
He created vaccines against rabies and anthrax.
The correct answer is "He was the first to view a bacterium." This discovery was actually made by Antonie van Leeuwenhoek.
Which of the following correctly shows the sequence of organelles a protein would take if it were being exported from the cell?(1 point)
Responses
Ribosome →
Vesicle →
Rough ER →
Vesicle →
Golgi Apparatus →
Cell Membrane
Ribosome right arrow Vesicle right arrow Rough ER right arrow Vesicle right arrow Golgi Apparatus right arrow Cell Membrane
Ribosome →
Rough ER →
Vesicle →
Golgi Apparatus →
Vesicle →
Cell Membrane
Ribosome right arrow Rough ER right arrow Vesicle right arrow Golgi Apparatus right arrow Vesicle right arrow Cell Membrane
Smooth ER →
Vesicle →
Golgi apparatus →
Rough ER →
Vesicle →
Nucleus
Smooth ER right arrow Vesicle right arrow Golgi apparatus right arrow Rough ER right arrow Vesicle right arrow Nucleus
Ribosome →
Smooth ER →
Vesicle →
Cell Membrane →
Vesicle →
Rough ER
Ribosome right arrow Smooth ER right arrow Vesicle right arrow Cell Membrane right arrow Vesicle right arrow Rough ER