Different glycoproteins can have a diverse array of oligosaccharides. Which of the statements below about this diversity is true?
(a) Extensive modification of oligosaccharides occurs in the extracellular space.
(b) Different oligosaccharides are covalently linked to proteins in the ER and the Golgi.
(c) A diversity of oligosaccharyl transferases recognizes specific protein sequences, resulting in the linkage of a variety of oligosaccharides to proteins.
(d) Oligosaccharide diversity comes from modifications that occur in the ER and the Golgi of the 14-sugar oligosaccharide added to the protein in the ER.
(d)
You might also like to view...
Many birth-control pills give a constant amount of synthetic estradiols and progesterone for 21 days, and followed by seven days where no hormones are ingested. These constant hormone levels affect the menstrual cycle in different ways
Which of the following statements most accurately describes the effects of birth control pills? A. Birth control pills inhibit the formation of uterine lining so implantation of a fertilized oocyte cannot occur. B. Birth control pills maintain constant levels of certain hormones so there is no surge in FSH and ovulation does not occur. C. The seven days with no hormones does not allow a thick enough uterine lining to form so a fertilized oocyte cannot implant. D. Birth control pills maintain constant levels of certain hormones and mask the release of the oocyte from the follicle.
____________________ junctions are like buttons on a shirt to hold cells together. Fill in the blank(s) with the appropriate word(s)
The karyotype designation for an infant with a deletion in the short arm of chromosome 5 (cri du chat syndrome) is
____________________Fill in the blank(s) with the appropriate word(s).
In the case of temperature regulation, integration is accomplished by
(a) a receptor in the brain. (b) a center in the brain. (c) muscles and glands. (d) none of the above.