Answer the following questions true (T) or false (F)
1. All hormones are steroids.
2. Most enzymes are proteins, but not all proteins are enzymes.
3. Your muscles contract using contractile proteins to produce movement.
1. FALSE
2. TRUE
3. TRUE
You might also like to view...
In SDS–polyacrylamide gel electrophoresis proteins are partially denatured and separated entirely as a function of their mass
Histones are an exception; they migrate more slowly than they should, as though they are much larger than they actually are. Why does this occur? A. Histones form dimers and tetramers, making them appear larger. B. Histones are heavily glycosylated, greatly adding to their mass. C. Histones have a large number of positively charged amino acid residues. The binding of SDS to the histones is not sufficient to mask these charges, resulting in slower migration. D. Histones have an affinity for polyacrylamide. E. Histones are somewhat insoluble, which slows their passage through the gel.
Which of the statements about the synthesis of polypeptides (proteins) is INCORRECT?
A. Translation is the process of protein synthesis. B. Proteins are synthesized in the cytosol. C. The synthesis of proteins is a catabolic process. D. The synthesis of proteins requires ribosomes. E. Proteins are synthesized from mRNA template.
Pulmonary veins carry ____
a. oxygen-rich blood back to the heart b. oxygen-poor blood back to the heart c. oxygen-rich blood away from the heart d. oxygen-poor blood away from the heart e. oxygen-rich blood to and from the heart
Which of the photographs in the above figure represents the bryophyte?
a. A b. B c. C d. D e. both B and C