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 TAA TAA UAA UAA UUA UUA ATT ATT

The mRNA codon AUU corresponds to a complementary tRNA anticodon. To find the anticodon, we need to replace each base with its complement:

- A (adenine) pairs with U (uracil)
- U (uracil) pairs with A (adenine)
- U (uracil) pairs with A (adenine)

Thus, the tRNA anticodon that pairs with the mRNA codon AUU would be UAA.

From your response options, the correct answer is **UAA**.

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 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 → 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 → 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 Ribosome → Rough ER → Vesicle → Golgi Apparatus → Vesicle → Cell Membrane

To export a protein from the cell, the correct sequence of organelles is:

1. **Ribosome**: where the protein is synthesized (first on the rough ER)
2. **Rough ER**: where the protein is folded and modified
3. **Vesicle**: carries the protein from the rough ER to the Golgi apparatus
4. **Golgi apparatus**: further modifies and sorts the protein
5. **Vesicle**: then carries the protein to the cell membrane
6. **Cell Membrane**: where the protein is exported out of the cell

Given these steps, the correct response from your options is:

**Ribosome → Vesicle → Rough ER → Vesicle → Golgi Apparatus → Cell Membrane**.

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) Responses DNA making and DNA packaging DNA making and DNA packaging DNA packaging and DNA storing DNA packaging and DNA storing protein making and protein packaging protein making and protein packaging protein packaging and lipid production

The rough endoplasmic reticulum (rough ER) is primarily involved in **protein synthesis** (making), as it is studded with ribosomes that translate mRNA into proteins. The Golgi apparatus is primarily involved in **protein packaging** (packaging), where it modifies, sorts, and packages proteins for transport to their destinations.

Therefore, the correct answer to fill in the blank in the passage is:

**protein making and protein packaging.**

In which part of the cell do ribosomes perform protein synthesis?(1 point) Responses cytoplasm cytoplasm vacuole vacuole lysosome lysosome nucleus

Ribosomes perform protein synthesis primarily in the **cytoplasm** and on the **rough endoplasmic reticulum (rough ER)**, which is an extension of the cytoplasm. However, from the given options, the most accurate answer is:

**cytoplasm.**

What would happen to a cell that lacked smooth endoplasmic reticulum?(1 point) Responses It would not be able to replicate DNA. It would not be able to replicate DNA. Its cell membrane would be impermeable. Its cell membrane would be impermeable. It would not be able to make lipids. It would not be able to make lipids. It would not be able to produce tRNA.

The smooth endoplasmic reticulum (smooth ER) is primarily involved in lipid synthesis, detoxification of substances, and metabolism of carbohydrates. If a cell lacked smooth endoplasmic reticulum, it would notably be unable to synthesize lipids.

Therefore, the correct response is:

**It would not be able to make lipids.**