Which of these answers is a single cell with the largest diameter?
a. human rbc
b. bacterial cell
c. cheek cell
d. liver tissue
c. cheek cell
Who was the first person to visualize LIVING cells
a. Anton van Leeuwenhoek
b. Robert Hooke
c. Theodore Schwann
d. Maurice Wilkins
a. Anton van Leeuwenhoek
What is the fundamental unit of life according to the cell theory?
a. atom
b. molecule
c. cell
d. tissue
e. organism
c. cell
Which type of microscopy would be most appropriate to visualize detail in ribosome, which has a diameter of around 20nm?
a. standard brightfeild microscopy
b. fluorescence microscope
c. electron microscopy
d. neither A, B, or C
e. choice A, B and C could all be used to visualize ribosome.
c. electron microscopy
Which type of molecule is primarily responsible for catalyzing chemical reactions in cells?
a. proteins
b. lipids
c. DNA
d. RNA
e. Sugars
a. proteins
Which of the following is most likely to form hydrophobic interactions in water?
a. two side chains of two polar amino acids
b. two glucose molecules
c. the side chains of two non polar amino acids
d. the nitrogenous bases in double stranded DNA
c. the side chains of two non polar amino acids
Which of these is a catabolic reaction?
a. digestion of glycogen into glucose
b. folding of a protein
c. generation of nucleic acid from nucleotides
d. all of the above
e. none of the above
a. digestion of glycogen into glucose
Based on your knowledge of the chemical bonds, which of the following interactions would you expect to play the most important role in enhancing the solubility of macromolecules in water?
a. hydrophobic interactions
b. non polar covalent bonds
c. hydrogen bonds
d. van der Waals forces
c. hydrogen bonds
When comparing saturated to unsaturated fatty acids, which of the following is NOT true?
a. saturated fatty acids have no double bond in fatty acid tail
b. unsaturated fatty acids have one or more double bonds in fatty acid tail
c. saturated fatty acids with cid double bonds have higher melting temperatures than unsaturated fatty acids
d. the fatty acids used to build phospholipids in the plasma membrane typically have at least one cis double bond in the fatty acid tails.
c. saturated fatty acids with cid double bonds have higher melting temperatures than unsaturated fatty acids
The chemical process that occur to form nucleic acids, proteins, and carbohydrates all involve:
a. peptide bonds
b. hydrolysis reactions
c. condensation reactions
d. A and C are correct
e. A and B are correct
c. condensation reactions
Which of the following macromolecules would yield the largest number of chemically different types of monomers after complete hydrolysis (chemically different, meaning molecules with different chemical formulas)
a. DNA
b. proteins
c. RNA
d. glycogen
b. proteins
Proteins are highly diverse molecules. Were the ultimate source of genetic information used to make different proteins?
a. DNA
b. RNA
c. other proteins in cell
d. Sugars
a. DNA
Which of these structures would look the most similar in two completely different proteins?
a. The primary strcutre
b. The tertiary structure
c. alpha helices
d. all the above
c. alpha helices
What are the pyrimidines?
Cytosine, Uracil, Thymine
What are the pruines?
adenine, guanine
What are the components of a DNA nucleotide?
Deoxyribose sugar, phosphate group, nitrogenous base
What is the complete set of information in an organism’s DNA is called
the genome
What is the structure at the end of a chromosome and allows for the end of the chromosome to be duplicated, while also protecting the ends of the chromosome?
Telomere
Which histone protein is responsible for linking nucleosomes together, forming the 30nm fiber?
H1
Example of Polar Uncharged Amino acid. Give the full name, 3 letter abbreviation, 1 letter abbreviation
Serine, Ser, S
Example of Polar charged Amino acid. Give the full name, 3 letter abbreviation, 1 letter abbreviation
Lysine, Lys, K
Example of a nonpolar Amino acid. Give the full name, 3 letter abbreviation, 1 letter abbreviation
Valine, Val, V
The beta tubulin is the ________ end
positive (B positive)
What end of the microtubule is oriented towards the centrioles
the negative end
