Answer:B). Cell membranes are composed of a lipid bilayer.
Explanation: A membrane is a lipid bilayer that surrounds the cell. Lipids have two parts: the fatty acid chain (the tail) and the phosphate group (the head).
The phosphate head groups are polar, face outward and interact with the outside environment of the cell. The fatty acid chain is hydrophobic and nonpolar, face each other in the bilayer thus forming a hydrophobic fluid interior.
The hydrophobic nature of the bilayer interior makes the membrane to permit only nonpolar and hydrophobic molecules to pass through the cell membrane. This is the reason the membrane allows only molecules that dissolve in the lipid bilayer to pass through to enter or leave the cell.
<span>seminal vesicles
The seminal vesicles, vesicular glands, or seminal glands, are a pair of simple tubular glands posteroinferior to the urinary bladder of some male mammals. Seminal vesicles are located within the pelvis.</span>
Answer:
The scientific question posed by the student is, Does compost cause tomato plants to grow faster and taller than artificial fertilizer?
Explanation:
Answer:
THE ANSWER IS TRUE
Tay-Sachs disease is a rare inherited condition that mainly affects babies and young children. It stops the nerves working properly and is usually fatal. It used to be most common in people of Ashkenazi Jewish descent (most Jewish people in the UK), but many cases now occur in people from other ethnic backgrounds.
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Wisdom teeth are an example of vestigial structures. Vestigial structures are structures that may be inherited to enhance fitness; however, if they are not present in an organism, then there is no real harm to the organism.. The wisdom teeth, if inherited, help a person eat and mechanically digest the food; however, if a person's wisdom teeth are missing, they do not encounter many problems in chewing.
