Which type of carbohydrate is an important component in the structure of many animals and fungi?
Chitin
100
A molecular with hydrophilic and hydrophobic areas is called:
Amphipathic
100
Which of the following molecules will NOT move across a cell membrane made up of just phospholipids? CO2, glucose, K+ or ethanol
K+
100
The main structural components of the cell membrane are:
Phospholipids and proteins
100
Which step in cellular respiration produces the greatest number of ATP per molecule of glucose during aerobic respiration?
oxidative phosphorylation
200
Glucose is stored in plants as the glucose polymer called
starch
200
The presence of _____________ in the plasma membrane allows the cell membrane to remain more fluid as the temperature drops.
cholesterol
200
Spontaneous movement of a substance from one region to another, often with a net movement from a region of high concentration to one of low concentration, is called:
Diffusion
200
Which structure is the site of the synthesis of proteins that may be exported from the cell?
rough ER
200
How many oxygen molecules (O2) are required each time a molecule of glucose (C6H12O6) is completely oxidized to carbon dioxide and water via aerobic respiration?
6
300
Is glucose a monosaccharide, disaccharide or polysaccharide?
monosaccharide
300
True or false: steroids are classified as lipids.
True
300
Molecules that down a concentration gradient and require transporters to cross a membrane use:
facilitated diffusion
300
Which organelle is the primary site of ATP synthesis in eukaryotic cells?
Mitochondrion
300
Name the 3 end products of glycolysis.
ATP, NADH, pyruvate
400
Which carbohydrate is a major structural component of plant cell walls?
cellulose
400
The phosphate head of a phospholipid makes that end of the molecule more hydro______
philic
400
In osmosis, water moves across a membrane from areas of lower _____________ to areas of higher ______________.
solute concentration; solute concentration
400
Motor proteins interact with the __________ to move around cellular components, such as vesicles.
cytoskeleton
400
The oxygen consumed during cellular respiration is involved directly in which process or event?
accepting electrons at the end of the electron transport chain
500
Which type of carbohydrate is an important part of bacterial plasma membranes?
peptidoglycan
500
What is the defining feature of a lipid?
Insolubility in water
500
What will happen to a red blood cell if it is placed in a hypotonic solution?
It will absorb water from the surrounding fluid.
500
Cell products, such as proteins, are secreted from the cell membrane through
exocytosis
500
Which metabolic pathway is common to both cellular respiration and fermentation?