Answer:
The correct option is b
Explanation:
Phospholipids are lipids that contains a phosphate group, which forms the "head" of the molecule and is hydrophilic (water loving). The "tail" of phospholipids is made of two fatty acids which are hydrophobic (water fearing). The phospholipid in the cell membrane acts as a selectively permeable barrier that regulates what goes in and out of the cell <u>thereby protecting the cell from some external molecules and ions</u>.
<span>Formation of bivalents lead to spindle fibers from opposite poles attaching to homologous chromosomes.
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Answer:
The mass of the reactants and products is equal and is not dependent on the physical state of the substances.
Explanation:
You need to make sure all atoms are equal in number when balancing a chemical equation
