LTE 2:59 AM cerritos.instructure.com D Question 3 1 pts Which levels of protein

Question

LTE 2:59 AM cerritos.instructure.com D Question 3 1 pts Which levels of protein structure may use hydrogen bonding? tertiary O primary secondary D Question 4 1 pts These molecules contain glycosidic linkages fucose starch collagen D Question 5 1 pts Embryonic Stem Cells come from the inner cell mass of embryos created from somatic cell nuclear transpiants O Ealactose O come from the inner cell mass of leftover embryos from in vitro fertilization procedures are multpotent O grow well in the lab are thought to be less lkely to cause transplant rejection than adult stem cells

Explanation / Answer

Ans. #3. Correct option. A, C, D. The secondary, tertiary and quaternary structures are stabilized by intermolecular H-bonds.

The primary structure, i.e. linear sequence of amino acids, do not involve the formation of H-bonds.

#4. Correct option- A, C, D. A glycosidic linkage is the covalent formed between two monosaccharides. So, all di-, tri- or polysaccharides involve the formation of glycosidic bond. Glycogen and starch are polymers of glucose linked by glycosidic bond. Sucrose is a dimer consisting of glucose and fructose linked together by glycosidic bond.

# Glucose, being a monomer, does not exhibit glycosidic linkage by itself.

# Collagen is a protein, consisting of amino acids linked by peptide bind.

#5. Correct options- A, C, D, E,.

# Option- A,D- True. The cells derived from early embryo are pluripotent (multipotent), i.e. have the ability to form different types of cells.

# Option- C. True. If few cells of an early embryo are removed, the embryo can regenerate itself. It indicates their multipotent nature as regeneration ability. In lab, the leftover cells are also multipotent, if they are from early embryonic stage.

# Option E- True. Embryonic stem cells “grow” well in lab, that is, can be cultured in labs under in-vitro conditions. Note that, the embryo can’t “grow” in complete fetus under lab conditions. So, assuming the term “grow” is equivalent to “culture”, the statement is true.

# Option F. False. Due to intrinsic expression of immunogenic cell surface proteins, especially MHC I that is unique for every individual from the time of fetal development (it is a part of innate immunity), the embryonic stem cells are equally likely to exhibit transplant rejection similar to adult stem cell.

# Galactose is a monosaccharide. It may be one of the nutritional requirement for the embryonic stem cell as well as other type of cells. However, there is no absolute need of glucose for embryonic stem cell.

  

Related Questions

Navigate

• Browse (All)
• Browse L
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.