A multiple of CH2O is the basic molecular formula for what kind of macromolecule?
Carbohydrate
What is this?
Lipid
Glycerol and 3 fatty acids
The embedded molecules seen here can act as a buffer against either too much heat or cold in animal cells. What are they?
Cholesterol
What has a certain hydrophilic composition that certain molecules or ions can use as a tunnel through the membrane?
Channel Protein
Phagocytosis and pinocytosis are examples of
Endocytosis
Bulk Transport
A cell that has a solute concentration of 0.5% is placed in a solution that has a solute concentration of 0.025%. What can we say about this cell?
The cell is hypertonic with respect to the solution
Water is likely to enter the cell, making it swell
In cell signaling, receptor activation occurs in the cytosol only for intracellular receptors whose ligand has to cross the plasma membrane. True or false?
True
What attaches to both the cytoskeleton and the extracellular matrix?
Integrin
What organelles are packets of RNA and protein made up of large and small subunits and are the sites of protein synthesis?
Ribosomes
When a cell secretes a signaling compound that can affect it as well as neighboring cells, we call this mode of communication...
Local
Autocrine
The structure is a schematic of an enzyme. The blue pointer is indicating the
Active Site
Site for competitive inhibition to occur
A reaction which builds from simple to complex may be
Anabolic
Endergonic
Photosynthesis
During redox reactions, the molecule that donates an electron is said to be ___, while the molecule accepting the electrons is said to be ___. The one donating the electrons is also known as the ___ agent, and the one accepting is known as the ___ agent.
Oxidized, reduced; reducing, oxidizing
What can alter the function of enzymes?
pH
Temperature
Cofactors
Inhibitors
Enzymes lower the activation energy of a reaction, and so speed up the reaction. True or false?
True
In an electrogenic pump, ATP is used to pump __ against its concentration gradient to the outside of the cell; in turn this builds potential energy known as the "proton motive force" that is used to transport another molecule ___ its concentration gradient
H+; against
At rest, the cell is relatively more ___ inside and relatively more ___ outside, and the Na+ concentration is higher ___ while the K+ concentration is higher ___.
negative, positive; outside, inside
In long distance signaling, the molecule used is termed
Hormone
When a ligand binds to a specific protein, we call this
Receptor-Activation
When microfilaments and microfibers assemble and reassemble themselves, we can call this type of cellular work
Mechanical
Most ATP is made by
Chemiosmosis
Spindle fibers attaching to chromosomes to pull them apart during cell division is considered
