Download presentation
Presentation is loading. Please wait.
Published byCurtis Freeman Modified over 5 years ago
1
Which lipids would you find in human cell membranes?
cholesterol glycolipids phospholipids all of the above © 2015 Pearson Education, Inc.
2
A food contains organic molecules with the elements C, H, and O in a ratio of 1:2:1. What class of compounds do these molecules belong to, and what are their major functions in the body? lipids; energy source proteins; support and movement nucleic acids; determining inherited characteristics carbohydrates; energy source © 2015 Pearson Education, Inc.
3
Why is cholesterol important in the human body?
It transforms into prostaglandins, which are released by damaged tissues causing pain. Cells need it to maintain membrane rigidity as well as for hormone production. It is an essential component of eicosanoids. It is the only site of storage for lipid-soluble vitamins. Answer: b © 2015 Pearson Education, Inc.
4
Why is cholesterol important in the human body?
It transforms into prostaglandins, which are released by damaged tissues causing pain. Cells need it to maintain membrane rigidity as well as for hormone production. It is an essential component of eicosanoids. It is the only site of storage for lipid-soluble vitamins. © 2015 Pearson Education, Inc.
5
Proteins are chains of which small organic molecules?
saccharides fatty acids amino acids nucleic acids Answer: c © 2015 Pearson Education, Inc.
6
How might a change in an enzyme’s active site affect its functions?
increased activity due to a better fit with the substrate decreased activity due to a poor substrate fit inhibited activity due to no substrate fit all of the above Answer: d © 2015 Pearson Education, Inc.
7
How does boiling a protein affect its structural and functional properties?
Heat denatures the protein, causing unfolding. Heat causes the formation of additional quaternary structure. Heating rearranges the primary structure of the protein. Heat alters the radical groups on the amino acids. Answer: a © 2015 Pearson Education, Inc.
8
How does boiling a protein affect its structural and functional properties?
Heat denatures the protein, causing unfolding. Heat causes the formation of additional quaternary structure. Heating rearranges the primary structure of the protein. Heat alters the radical groups on the amino acids. © 2015 Pearson Education, Inc.
9
A large organic molecule composed of the sugar ribose, nitrogenous bases, and phosphate groups is which kind of nucleic acid? DNA ATP protein RNA © 2015 Pearson Education, Inc.
10
What statement below is FALSE with regard to the function of DNA?
It encodes information needed to build proteins. It controls all physical characteristics of our bodies. It assembles a specific amino acid within a protein’s structure. It regulates all aspects of cellular metabolism. © 2015 Pearson Education, Inc.
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.