Biology final study guide Test 1 Flashcards
Amongst all others, which is the largest macromolecule
polysaccharide
Which is not true about electrical charges in chemistry?
A. protons carry positive charge
B. In an atom, the number of protons always equals the number of neutrons
C. An atom is neutral when the positive and negative charges balance
D. an ion contains one or more positive charges
B. In an atom the number of protons and neutrons must be equal
Which of the following features is unique to bacterial cells? A. nucleoid region B. nucleus C. Cell membrane D. Cell Wall E. ribose
A. Nucleoid region
The cell wall is a common feature to A. Prokaryotic cell B. plant cells only C. Animal cells D. Prokaryotic and plant cells E. Prokaryotic, plant, and animal cells
D. Prokaryotic and plant cells
Which of the following pairs is mismatched?
A. lysosomes- protein synthesis
B. Cytoskeleton- microfilaments
C. Cell membrane- lipid bilayer
D. Golgi apparatus-modification, processing and sorting of macromolecule
A. Lysosome - protein synthesis
After proteins are formed by the ribosomes located on the ER, what is then next organelle to which they can be transported
C. Golgi apparatus
What is the main difference between fat (triglyceride) and phospholipid?
C. A phopholipid has 2 fatty acids attached to the glycerol, whereas fat has 3
Which statement is not true about subatomic particles?
E. All electrons in an atom contains the same amount of energy
Which of the following terms best describes a conceptual scheme in science that is strongly supported, has not yet been found incorrect, and is based on the results of many observations? A. scientific model B. an experiment C. descriptive research D. scientific theory E. experimental result
D. A scientific theory or principle
For water to vaporize
D. Both energy must be supplied and hydrogen bonds broken
In the process of biological evolution, new species may evolve through exchange of genes from one species to another. This process is called
B. Horizontal gene transfer
Which portion of an amino acid is unique among the different amino acids?
D. The side chain and R group
If you place the corner of a paper towel into a droplet of water and the water moves across the paper towel. Which of the following would explain the movement of the water?
D. Both cohesion and adhsion
Which of the following type of microscopy would be most effective in visualizing the fine structure of viruses and cytoskeletal filament 10-25 nanometers in diameter?
C. Transmission electron microscopy
All cells have these two characteristics:
A.contains DNA in the nucleus and have plasma membrane
C. contain mitochondria and chloroplast
D. have a plasma membrane and ribosomes in the cytoplasm
D. Have plasma membrane and ribosomes in the cytoplasm
Which statement is not true about polar covalent bonds?
E. The oxygen of a water molecule is electropositive relative to the hydrogen
Carbon has 4 electron, hydrogen has 1 in their outer shells. How many bonds can form between a carbon atom and a hydrogen atoms?
E. 4
Which of the following is NOT offered as evidence in support of the endosymbiotic theory, the belief that a eukaryotic cell has evolved as s “committee” of prokaryotic cells?
C. Mitchondia and chloroplasts can actively break away from eukaryotic cells and live on their own
Which of the following relationships between cell structures and their rspective functions is NOT correct?
Golgi apparatus: break down of macromolecules
Which of the following would not be a molecule used for energy storage? A. Starch B. Cellulose C. glycogen D. All of the above
B. Cellulose