A) 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)
TAA
UUA
UAA
ATT
The correct answer is UAA. The sequence of bases on the opposite strand assembled by the tRNA is complementary to the mRNA sequence. In RNA, A pairs with U, so the complementary sequence to AUU would be UAA.
The correct answer is: Ribosome → Rough ER → Vesicle → Golgi Apparatus → Cell Membrane. This pathway represents the typical steps involved in the export of a protein from a cell. The protein is first synthesized by ribosomes attached to the rough endoplasmic reticulum (ER). The protein is then packaged into a vesicle, which buds off from the rough ER. The vesicle then moves to the Golgi apparatus, where it undergoes further processing and modification. Finally, the protein is transported to the cell membrane for export.
The correct answer is: protein making and protein packaging. The rough endoplasmic reticulum is responsible for protein synthesis, as it contains ribosomes that synthesize proteins. The Golgi apparatus is involved in protein packaging, modification, and sorting before the proteins are transported to their final destinations inside or outside the cell.
The correct answer is: cytoplasm. Ribosomes are found either free in the cytoplasm or attached to the rough endoplasmic reticulum. In both cases, they are involved in protein synthesis, where they read the mRNA sequence and assemble amino acids into a polypeptide chain.
The correct answer is: It would not be able to make lipids. The smooth endoplasmic reticulum (SER) is responsible for lipid synthesis, including the production of phospholipids, steroids, and other lipids essential for cell membranes, hormone production, and other cellular functions. Therefore, if a cell lacked smooth endoplasmic reticulum, it would not be able to synthesize lipids.
A) Which of the following correctly shows the sequence of organelles a protein would take if it were being exported from the cell? (1 point)
Smooth ER → Vesicle → Golgi apparatus → Rough ER → Vesicle → Nucleus
Ribosome → Rough ER → Vesicle → Golgi Apparatus → Vesicle → Cell Membrane
Ribosome → Vesicle → Rough ER → Vesicle → Golgi Apparatus → Cell Membrane
Ribosome → Smooth ER → Vesicle → Cell Membrane → Vesicle → Rough ER
A)
Proteins are important molecules that are synthesized, transported, and used in cells in a multitude of ways. The rough endoplasmic reticulum
and Golgi apparatus 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)
protein making and protein packaging
protein packaging and lipid production
DNA packaging and DNA storing
DNA making and DNA packaging
A) In which part of the cell do ribosomes perform protein synthesis? (1 point)
nucleus
cytoplasm
vacuole
lysosome
A) What would happen to a cell that lacked smooth endoplasmic reticulum? (1 point)
It would not be able to make lipids.
It would not be able to replicate DNA.
Its cell membrane would be impermeable.
It would not be able to produce tRNA.
To determine the sequence of bases on the opposite strand assembled by the tRNA, we need to use the complementary base pairing rule.
The complementary base pairing rule states that adenine (A) pairs with thymine (T) and uracil (U) in RNA, while cytosine (C) pairs with guanine (G) in both DNA and RNA.
In this case, the mRNA codon is AUU. To determine the tRNA sequence, we replace each base on the mRNA codon according to the complementary base pairing rule.
A (adenine) pairs with U (uracil), so we replace the first base on the mRNA codon with U.
U (uracil) also pairs with A (adenine), so we replace the second base on the mRNA codon with A.
Finally, U (uracil) pairs with A (adenine) once again, so we replace the third base on the mRNA codon with A.
Therefore, the sequence of bases on the opposite strand assembled by the tRNA would be UAA.
So, the correct answer is: UAA.