Biology 161 Exam 1 (chps. 2-6)
- Michigan State University
- Biology 111
- Biology 161 Exam 1 (chps. 2-6)
Last Modified: 2011-10-03
Related Textbooks:Biology with MasteringBiology™ (8th Edition)
The bonds that are broken when water vaporizes are?
· . hydrogen bonds between water molecules.
Collectively, hydrogen bonds hold water togetherAs water molecules leave through evaporations, other water molecules are pulled up to replace them (because of hydrogen bonds)
compounds that have the same molecular formula but different structures and, therefore, different chemical properties
have the same molecular formula but differ in the covalent arrangement of atoms.
- starch(only plants)
- glycogen (animals)
- most abundant organic compound on earth
- polymer of glucose
- Plant cell walls
- Beta configuration (every other -OH top then -OH on bottom)
- Causes to make straight lines,
- H+ on one strand form hyrdogen bonds with OH group on other
- very strong and close together
unsaturated fats have been synthetically converted to saturated fats by addition of hydrogen
Phospholipids are amphipathic, which means these molecules
Are composed of a hydrophilic portion and hydrophobic portion.
There are 20 different amino acids. What makes one amino acid different from another?
different side chains (R groups) attached to the amino groups.
C) different side chains (R groups) attached to the α carbon.
· Different steroids are created by varying the functional groups attached to the rings
- Are the monomers from which proteins are constructed
- have organic molecules with both Carboxyl (-COOH) and amino (NH2) groups
- At the center of an amino acid is an asymemetric carbon atom called the alpha carbon
- The Variable R group attaches here also (SIDE CHAIN)
covalent bond between amino acids when dehydration removes a hydroxyl (-OH) from the carboxyl (-COOH) end and one amino acid and a hydrogen atom from the amino group (NH2+) of another.
delicate coil held together by H+ bonding by every 4th amino acid. (secondary structure)
· 2 or more regions of the polypeptide chain lying side by side are connected by hydrogen bonds between parts of the 2 parallel polypeptide backbones. (secondary structure)
· ie. collagen, fibrous protein made of 3 polypeptides
· ie. hemoglobin, globular proein with 4 polypeptide subunits
in plant cells, circular flow of cytoplasm within cell, helps with movement
- Cell surface receptor proteins that span the membrane
- bind to the ECM on one side and to associated proteins attache to microfilaments on the other
- Transmit signals between them
- receptor mediated endocytosis: .
Words From Our Students
"StudyBlue is great for studying. I love the study guides, flashcards, and quizzes. So extremely helpful for all of my classes!"
Alice, Arizona State University
"I'm a student using StudyBlue, and I can 100% say that it helps me so much. Study materials for almost every subject in school are available in StudyBlue. It is so helpful for my education!"
Tim, University of Florida
"StudyBlue provides way more features than other studying apps, and thus allows me to learn very quickly! I actually feel much more comfortable taking my exams after I study with this app. It's amazing!"
Jennifer, Rutgers University
"I love flashcards but carrying around physical flashcards is cumbersome and simply outdated. StudyBlue is exactly what I was looking for!"