How do materials enter and leave the nucleus? Nuclear pores, small channels that span the nuclear envelope, let substances enter and exit the nucleus. Each pore is lined by a set of proteins, called the nuclear pore complex, that control what molecules can go in or out.
Answer;
Unlike animal cells (such as cheek cells) the cell wall of an onion and other plants are made up of cellulose, which protects the cell and maintains its shape.
Explanation;
-The main structural differences between plant and animal cells lie in a few additional structures found in plant cells. These structures include: chloroplasts, the cell wall, and vacuoles.
-Plants cells have cell walls and other structures that differ from those of animals. Animal cells do not have cell walls and have different structures than plant cells. Plants have either no or very basic ability to sense.
Answer:
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Explanation:
<em>Arteries carry blood to tissues</em>
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Answer:
a plastid that contains chlorophyll and in which photosynthesis takes place.
or
a type of plastid that is involved in the synthesis and storage of foodstuffs
Explanation:
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Answer:
The rock layers help by preserving the fossils and it also keeps a record of how they died, where they lived, what they ate, and a million other factors. Most rock layers are trillions of years old and it shows us what was alive and how they lived and what the earth was like back then.
Explanation:
