Answer:
B
Explanation:
the nucleus act as the brain of a cell and contains all the important buiz like genetic material.
Other molecules such as proteins, starch and sugar are simply too large to diffuse across the membrane. Sometimes, some of these large molecules are transported across the cell membranes by carrier proteins; this does not require energy and as a result is a form of passive transpor
Answer:
If this is a true or false, the answer is true.
Answer:
The structural unit of photosynthesis is the chloroplast. Prokaryotic and eukaryotic photosynthetic organisms possess flattened sacs or vesicles called thylakoids, which contain photosynthetic pigments. Chlorophyll molecules are attached to specific proteins embedded within membranes, along with carotenoids and other components necessary for photosynthesis.
Explanation:
Chloroplasts are typical and exclusive organelles of plant cells that possess chlorophyll. Because of them, plants are capable of carrying out the photosynthesis process, a process that transforms light energy into chemical energy contained in ATP molecules. The inside is filled with a gel called a stroma. It presents a DNA independent of the nucleus and plastoribosomes. Immersed in the stroma, there are flattened sacs called thylakoids or lamellae, the interior of which is called lumen. Thylakoids can spread throughout the stroma or stack in bundles called grana. In the membrane of grana or thylakoids are located the enzymatic systems that capture the energy of the sun and carry out the transport of electrons to form ATP.
