Sodium concentrations are higher outside and glucose concentrations are higher inside the cell. Using the same membrane protein for Na+ and glucose transport, what is it called when a Na+ electrochemical gradient is used to drive glucose transport into the cell against its concentration gradient?
A. primary active transport
B. secondary active transport
C. primary facilitated diffusion
D. secondary facilitated diffusion
E. passive diffusion
B. secondary active transport
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Fructose and galactose both have six carbon atoms, twelve hydrogen atoms and six oxygen atoms, just like glucose. A friend of yours says: "Since those sugars have the same number of atoms, they should have the same name." You Answer: "While they do have the same number and type of atoms,
A. they are all polysaccharides and have slightly different functions within organisms and therefore have different names." B. they are named differently because of their quaternary structures, which is very important in carbohydrates, especially glucose." C. they are named differently because when heated above their optimal temperature they become denatured and will not react with their substrates." D. they are named differently because they are involved in different DNA nucleotide formation." E. they are named differently because they are alternate forms of the monosaccharide, glucose."
Staphylococcus aureus can be identified by mixing the organism with specific antibody and visually recognizing a clumping reaction between the antigen and the antibody. This is a(n) ________ test.
A. biochemical B. ELISA C. microarray D. agglutination
Plastic pollution has had serious ecological consequences in ____.v
a. river ecosystems b. the atmosphere over urban areas c. oceans d. temperate deciduous forests e. desert biomes
The transport of xylem sap is the most rapid movement of any material in plants. Indicate whether the statement is true or false