Which of the following is not true of molecular chaperones?
(a) They assist polypeptide folding by helping the folding process follow the most energetically favorable pathway.
(b) They can isolate proteins from other components of the cells until folding is complete.
(c) They can interact with unfolded polypeptides in a way that changes the final fold of the protein.
(d) They help streamline the protein-folding process by making it a more efficient and reliable process inside the cell.
(c)
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The chromosomal structure that anchors the spindle fiber to the chromosome is known as the ____________________
Fill in the blank(s) with correct word
Place the processes occurring in the digestive tract in the correct order.
I-Peristaltic waves of contraction propel the food along the esophagus. II-Gastric juices are secreted with the arrival of food into the duodenum. III-The acidic chyme is transferred through the pyloric sphincter. IV-HCl and pepsin begin digestion of proteins into shorter polypeptides. A. II, IV, and III B. IV, III, and II C. II, III, and IV D. I, II, and IV E. I, II, and III
In garden peas, one pair of alleles controls the height
of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a tall plant with white flowers produces 3/8 tall purple, 1/8 tall white, 3/8 dwarf purple, and 1/8 dwarf white. What is the genotype of the parents? What will be an ideal response?
Any substance that when dissolved in water will give off H+ ions is referred to as a(n) ________
A) catalyst B) pH C) acid D) buffer