Answer:
cytoplasm
Explanation:
A cell can be thought of as a "factory," with different departments each performing specialized tasks. A cell's plasma membrane regulates what enters or leaves the cell.
Answer:
The nuclear pore complex is a huge structure composed of about 30 different pore proteins, and its central channel has a diameter of approximately 10-40 nm, which is large enough for even very large protein complexes. For this reason, it is unnecessary to unfold the protein, which can pass through the pore in its native state.
Explanation:
- Protein transport into the endoplasmic reticulum (ER) or mitochondria requires unfolding of the protein and threading the amino acid chain through a channel or pore into the organelle.
- In contrast, protein transport into the nucleus does not require unfolding of the protein.
- This is because, nuclear pore complex is a huge structure composed of about 30 different pore proteins, and its central channel has a diameter of approximately 10-40 nm, which is large enough for even very large protein complexes. For this reason, it is unnecessary to unfold the protein, which can pass through the pore in its native state.
C. physiological
Because the teeth becoming sharper is a physical change .
Species at imminent risk of extinction are classified as endangered species.
Answer:
The lub sound represents the <u>closing </u> of the atrioventricular valves and the dub sound represents the closure of the valves <u>between the ventricles and arteries.</u> Doctors can also use stethoscopes to monitor respiratory function. A wheezing or whistling sound most likely indicates<u> a constricted trachea.</u>
Explanation:
One can easily feel the heartbeat sound in the form of lub-dub by the stethoscope. The lub sound depicts the closure of the tricuspid valve and the mitral valves. Dub depicts the closure of the aortic and pulmonary valves.
A wheezing sound can be felt in the respiratory tract when an inflammation or blockage occurs in the airways or trachea. The wheezing sound is generally heard at the time of exhaling.
