The double membrane. It's theorized that chloroplasts used to be their own single-celled organism in the environment (and therefore with its own membrane). Then, the theory states, a larger cell took in the chloroplast by endocytosis, which involves surrounding the chloroplast in the large cell's own membrane. The chloroplast would then have two membranes surrounding it. This is similar to the thinking for mitochondria becoming an organelle as well. Hope this helps! :)
Answer:
Explanation:
Air sinks and spirals outward in a high-pressure system.The movement is in a clockwise direction in the northern hemisphere.In low-pressure systems,air rises and spirals inward in a counterclockwisw direction.
Answer:
These pertain to characteristics of an Eukaryotic cell
Explanation:
- Nucleic acids
- Nucleolus
- Rough endoplasmic reticulum
- Smooth endoplasmid reticulum
- Golgi apparatus
- Vesicle
- Mitochondria
- Lysosomes
- Peroxisomes
- Nucleoporin
- Cytoskeleton
Answer:
Explanation:
I think one of the most invasive species is perhaps the Dandelion. Who hasn't had a fit when we see them change from yellow to gray. The yellow is pretty, but the gray means it is ready to spread its seed to create more trouble.
Dandelions can be killed with herbicides, but I think you'd be as well off putting up with the dandelion. The herbicides have an unproven effect on our health.
The dandelion was introduced into the Americas in the mid 1600s and was used as food and had medical properties. Since then, because it has no common enemy in nature, it has spread the entire width of the continent. Rather amazing, I think.
Answer:
i am so sory! i cant see the picture
Explanation:
