Answer:
Chromosome pairs with its corresponding homologous chromosome to form a tetrad.
The correct answer is A.
Animal cells do not have a cell wall.
A cell wall is the rigid, outermost covering of plant cells and is made up of cellulose. It is absent in animal cells. The cell wall is visible under a light microscope.
Animal cells are instead covered by a cell membrane. It is made up of lipids, proteins, and small amounts carbohydrates. It is a thin and delicate structure that can only be seen using an electron microscope.
Explanation:
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A. Troposphere
Is the closest around plane flying level
Answer:
Theres no nucleus and what makes it a nucleus is the nuclear membrane. So the answer is the presence of a nuclear membrane.
