The headings complete the table are X = waxes and Y = sterols; option A.
<h3>What are lipids?</h3>
Lipids are fatty, oily, or waxy water-insoluble substances found in living organisms.
Lipids are of many classes and types and they perform several functions in the body.
Some classification of lipids are given below:
Waxes:
- prevent dehydration of plants
- are a protective layer on hair or feathers
- are tightly packed fatty acid chains joined to long-chain alcohols
Sterols:
- are found in cell membranes of plant and animal cells
- consist of four carbon rings with no fatty acids
- serve a role in aiding fat digestion
In conclusion, lipids are important biomolecules found in the body.
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The answer is D) <span>Calculate the probability of a child having either sickle-cell anemia or cystic fibrosis if parents are each heterozygous for both.
The addition rule is used to calculate the probability of one of the events from multiple pathways. If you want that only one of the events happens, you will use the addition rule. In a case when you want to calculate the possibility of a child having EITHER sickle-cell anemia OR cystic fibrosis, you will use THE ADDITION RULE.
For example, in statement B) you will not use this rule because there is no either/or, but both/and. In case, B) you would use the multiplication rule.</span>
Answer:
DNA is often compared to a ladder becaause of its structure. The nucleotides form hydrogen bonds in a certain sequence, forming a "rung" of the ladder. The backbones of DNA are formed by alternating phosphates and sugar residues. Each nucleotide side attatches to 1 of the 2 backbones, creating a ladder shape.
Answer:
to create suspense
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