Answer:
B. Cells are the basic units of structure and make up tissues.
Explanation:
According to the cell theory, cells can be described as building blocks of an organism. All living things are made up of cells. All cells are made up of former living cells. The cell theory discarded the previous excepted theory of existence of cells from non- living things.
The image shows that in multicellular organisms like plants, different cells are present. Cells of a similar type combine to make tissues.
Insufficient parathyroid hormone
production in the body could result in low levels of calcium in the blood which
can cause cramping and twitching of muscles or involuntary muscle contraction
in hands and feet, dry skin and several other symptoms in the body.
<h3><u>Answer;</u></h3>
<em>2 atoms of nitrogen </em>
<h3><u>Explanation;</u></h3>
- A compound is a substance that is made up of different types of atoms from different elements. For example water is a compound made up of hydrogen and oxygen atoms.
- In this case; Ni(NO₃)₂, is an example of a compound. It is <u><em>made up of 1 nickel atom, 2 atoms of nitrogen, and six atoms of oxygen</em></u>.
A) 12 is the answer because sex cells have half as many chromosomes as the offspring will have, half from the mother, the other half from the father.
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