ribeirosamantha183

What is a karyotype? Define the term and describe the preparation method. Name 4 similarities and 1 difference between a pair of homologous chromosomes A human with 47, XX+21 chromosomes is an example of a: monosomy trisomy monoploidy triploidy euploidy

17-During endocytosis, which of the following is (are) required to release the vesicle from the plasma membrane? a. Tethering proteins. b. Clathrin. e. Dynamin. d. Rab proteins. e. a and b 18- During endocytosis, which of the following is (are) involved in shaping a portion of the plasma membrane into a vesicle? a. Tethering proteins. b. Clathrin. c. Dynamin. d. Rab proteins. e. a and b

Which of the following are examples of endocytosis A mechanism in which specific molecules are ingested into the cell, which specificity results from a receptor-ligand interaction. A pathway that specializes in the nonspecific uptake of fluids, membrane, and particles attached to the plasma membrane. A pathway that takes up large particles on demand A pathway that delivers newly synthesized proteins carbohydrates, and lipids either to the plasma membrane or the extracellular space.

13) Which bond in the image above is a peptide bond? A. A B. B c, c D. D E. E 14) Glycogen is a(n): A. monosaccharide. B. structural polysaccharide in plants. C. storage polysaccharide in plants. D. structural polysaccharide in animals. E. storage polysaccharide in animals. 15) Which of the following statements is true? A. RNA is usually composed of two nucleotide strands. B. Ribose is the sugar in RNA C. Thymine is one of the RNA nucleotides. D. An RNA polynucleotide is held together by hydrogen bonds. E. RNA does not contain nitrogen. 16) A molecule with the chemical formula C1oHisO is probably a: A. monosaccharide B. disaccharide C. amino acid D. protein E. nucleic acid 17) Which type of lipid would you expect to find in butter? A. wax B. steroids C. saturated triglycerides D. unsaturated triglycerides E. phospholipids 18) The secondary structure of proteins is described as the: A. association of two or more polypeptide chains by weak bonds. B. folding of a peptide chain to form an alpha helix. C. bonding of two amino acids to form a dipeptide. D. three-dimensional shape of an individual polypeptide chain. E. order in which amino acids are joined in a peptide chain.

Study the linear and ring sugar structures of a monosaccharide given below and answer the following questions 4-6. How many asymmetric carbon atoms are in this sugar? Is this a L or a D-sugar? Which carbon atoms of this sugar are involved in forming a phosphodiester bond between two nucleotides? A. 1 and 2 B. 2 and 4 C. 3 and 5 D. 3 and 2 E. 2 and 3 Is this sugar present in RNA or DNA? What kind of glycosodic bonds are present in storage carbohydrates and structural carbohydrates? Name some storage and structural carbohydrates in plants and animals. Which type of glycosidic bonds are present in a a :- a. disaccharide b. Nucleotide ?

Which of the following statements are generally true for carbohydrates? Carbohydrates are achiral molecules Carbohydrates can be found in either linear or cyclic forms Simple carbohydrates have the molecular formula (C*H20)n Carbohydrates can be linked with proteins.