Which of the following statements about lipophilic hormones is false?
a) They can not dissolve in plasma and so are transported bound to proteins
b) Steroids are a lipophilic hormone derived from cholesterol c) They function by interacting with DNA and causing formation of new proteins
d) Thyroid hormones are lipophilic
e) None of the above are false
Ans: e) None of the above are false
You might also like to view...
In chain termination sequencing, DNA replication halts in a polymerase chain reaction, owing to the incorporation of a chemically altered base into a growing DNA chain. When this occurs, a ________ results.
A) partial DNA molecule B) template strand C) complementary sequence D) first-generation DNA molecule
Which of the following is true in the moss life cycle?
a. Gametophytes originate within and are dependent upon sporophytes. b. Sporophytes originate within and are dependent upon gametophytes. c. Both gametophytes and sporophytes are totally independent from each other and are equally dominant. d. Gametophytes are free-living and photosynthetic, but are replaced by a dominant sporophyte generation. e. Gametophytes are photosynthetic and partially independent from the sporophytes.
Which one of the following is represented by the calculation: (number of births — number of deaths)/total population?
A) fertility rate B) birth rate C) population growth rate D) replacement fertility rate E) zero population growth
The presently accepted model of enzyme action was proposed by Daniel Koshland in the 1960s and suggested that the enzyme was a flexible structure with an active site roughly complementary to the substrate that binds it. After its initial interaction with the substrate, the enzyme alters its shape and thus improves the fit of the substrate in the active site. What is the name of this model?
a) the flexible sponge model b) the lock and key model c) the koshland model d) the induced fit model e) the flexible fit model