Answer:
Cells are the basic building blocks of all living things.
Explanation:
They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body’s hereditary material and can make copies of themselves.
Answer:
veins
Explanation:
Arteries carry blood away from the heart and veins carry blood back to the heart.
What do you need help with
A contractile vacuole regulates water in some protozoans.
Answer:
It lacks a nuclear membrane and resides inside the nucleus.
Explanation:
The nucleus is considered as controlling centre of the cell. The parts of the nucleus includes nucleolus, nuclear pore, chromatin, and nuclear envelope. Nucleolus is the part of the nucleus which is present inside the cell and lacks a nuclear membrane and its function is producing and assembling of ribosomes.
The reason for not considering other statement as true are as follows:
1. Nucleolus is found only in Eukaryotas.
2. Nucleus is the control centre of the cell.
3. It lacks a nuclear membrane and resides inside the nucleus.