Golden Oldies
Definition: Likes water
What is hydrophilic?
Describes the cell membrane bilayer as dynamic and flexible, with freely moving proteins, carbohydrates, and cholesterol embedded throughout
What is the fluid mosaic model?
What are proteins made of?
What are chains of amino acids?
Isaac Newton observed apples falling from trees, and concluded that there is a force pulling the apples down, which is the same force that acts upon the earth and the moon. Isaac Newton called this force gravity.
What is a hypothesis?
What property describes the majority of a lipid?
Hint: water
What is hydrophobic?
What differentiates each amino acid from each other?
What are R groups?
A double-membraned organelle (multiple answers)
What is a nucleus?
What is a mitochondrion?
What is a chloroplast?
The concentration of solutes on the outside of the compartment compared to the inside.
What is tonicity?
Polypeptide backbone twists and bends into coils and sheets, allowing what to form alpha helices and beta sheets?
What are hydrogen bonds?
Motor proteins Kinesin and Dynein are essential for intracellular transport, nerve cell communication, and chromosome separation in mitosis. They carry vesicles along a hollow tube. What is this hollow tube?
What are microtubules?
People are advised to put flowers in water to keep them fresh. When the flowers are not in water, their petals start to wilt because there is no structure. What membrane transport process causes this to happen?
Hint: water
What is osmosis?
If I change the R groups of a polypeptide and it causes differences in how the R groups interact with the surrounding environment, which structure(s) is/are affected?
What is the tertiary structure and the quaternary structure?
What chemical property of water allows water striders to "walk" on water? What intermolecular force between water molecules allows this to happen?
What is cohesion and hydrogen bonds?
There are more Na+ ions outside a cell than inside a cell. However, the cell wants to maintain a low intracellular sodium concentration to regulate cell volume and maintain an electrical gradient for nerve/muscle functions. In order to do so, they want sodium to flow outside of the cell. What membrane protein do they need?
What is a pump?
Hemoglobin is made up of four polypeptide chains, two of which are alpha chains, and two are beta chains. What interactions are holding these four polypeptide chains together to form hemoglobin?
What are covalent and non-covalent interactions?