Question

1. which macromolecule is the major component of cell membranes? * 7 points

○ nucleic acids
○ protiens
○ carbohydrates
○ lipids

1. sex hormones are a type of _______. * 7 points

○ steroid
○ monosaccharide
○ polysaccharide
○ cellulose

1. _______ are made up of many sugars. * 7 points

○ cellulose
○ monosaccharides
○ polysaccharides
○ steroids

1.which of the following elements is required in an organic compound? * 7 points
○ carbon
○ sodium
○ nitrogen
○ oxygen

Explanation:

Question 3

Cell membranes are mainly composed of lipids (specifically phospholipids, which are a type of lipid) along with proteins and some carbohydrates. Nucleic acids are for genetic information, proteins have various functions but aren't the major component of the membrane structure, and carbohydrates are in smaller amounts. So the major component is lipids.

Sex hormones (like estrogen and testosterone) are steroid hormones. Steroids are a type of lipid. Monosaccharides are simple sugars, polysaccharides are complex sugars, and cellulose is a type of polysaccharide (a carbohydrate), so sex hormones are steroids.

Polysaccharides are polymers made up of many monosaccharide (sugar) units. Cellulose is a type of polysaccharide (so it's a specific example, not the general term), monosaccharides are single sugars, and steroids are lipids. So the ones made of many sugars are polysaccharides.

Answer:

D. Lipids

Question 12