Answer:
D. Still use chloroplasts to
sorry if it's wrong
Answer:
It is either the epiglottis or larynx
Explanation:
Actin filaments are found in cells that form cytoskeletal structures. These are generally present below the plasma membrane.
Amoebae move by crawling over a surface (cell crawling), which involves GROWTH OF ACTIN FILAMENTS TO FORM PSEUDOPODIA. Pseudopodium is a bulge in the plasma membrane towards the direction of movement.
Answer:
Option d (Oak bark) is the correct choice.
Explanation:
- Throughout 1665, Robert Hooke would be the very first individual who saw cells through some kind of microscopic examination. The innovation as well as advancement and implementation of microscopy allowed this to happen.
- Microscopic constructions would not have been seen already therefore researchers haven't understood which one living creatures were managed to make from.
The other three alternatives are not related to the given particular instance. So that option d would be the correct one.
Answer:
Low phenylalanine concentration:
- If the enzyme is inactive, PAH will look like its inactive form, with phenylalanine located in the allosteric site / inactive site so that PAH is a different shape. This will not allow as much phenylalanine to be converted into tyrosine, as we wait for Phe levels to increase.
High phenylalanine concentration:
- If the enzyme is active, PAH will look like its regular form, with an open active site that's the size of phenylalanine so that reactions can occur. (Like a hand fitting into a glove, or a lock into a key.) Phenylalanine will be the substrate, the thing acted upon by the enzyme. This will eventually raise the amount of tyrosine that's created and lower the concentration of phenylalanine.
Think about it like this. Ever heard of homeostasis? That's how the body likes to be the same, keep everything regulated, all the time. So if there are high levels of something, the body is going to try to keep that something down, and if there are low levels, it's going to try to increase the concentration of that thing.
