Organic Molecules
Which molecules are joined together to make proteins?A. Fatty Acids
B. Nucleic Acids
C. Amino Acids
D. Acetic Acids
C. Amino Acids
A. It regulates mineral concentrations in cells.
B. It regulates body temperature
C. It maintains water balance.
D. It maintains sugar balance in cells.
B. It regulates body temperature
Plant cells are able to produce their own food. This process happens in which structure?
A. Cell Wall
B. Vacuole
C. Mitochondrion
D. Chloroplast
D. Chloroplast
How are mitosis and meiosis similar?
A. Both have two cell divisions
B. Both produce gametes
C. Both involve crossing over
D. Both require DNA replication
D. Both require DNA replication
How do some chemicals increase the risk of a person getting cancer?
A. By causing cell mutations
B. By causing a deficiency of Vitamin D
C. By causing an increase of toxins in the skin
D. By causing a decrease in the immune response
A. By causing cell mutations
Waxes create a waterproof layer on the outside of some living organisms. To which group of organic molecules do waxes belong to?
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
B. Lipids
Which word equation best represents the process of cellular respiration?
A. Carbon Dioxide + Glucose --> Oxygen + Water
B. Carbon Dioxide + Water --> Glucose + Oxygen
C. Glucose + Oxygen --> Carbon Dioxide + Water
D. Oxygen + Water --> Carbon Dioxide + Glucose
C. Glucose + Oxygen --> Carbon Dioxide + Water
What do both prokaryotic and eukaryotic cells contain?
A. Membrane-bound organelles
B. Linear chromosomes
C. Cytoplasm
D. Nucleus
C. Cytoplasm
Which process can occur in both Mitosis and Meiosis?
A. Fertilization
B. Independent Assortment
C. Gene Mutation
D. Crossing Over
C. Gene Mutation
Which mRNA sequence is produced from this DNA strand: TAG CAG TAC?
A. ATC GTC ATG
B. AUC GUC AUG
C. AUG CUG AUC
D. UTC GTC UTG
B. AUC GUC AUG
Why are enzymes considered reusable?
A. Enzymes are constantly renewed by other enzymes
B. Enzymes are made of unusually strong materials
C. Enzymes are constantly regenerated by respiration
D. Enzymes are not changed when they catalyze a chemical reaction
D. Enzymes are not changed when they catalyze a chemical reaction
Animal cells perform functions using energy that is derived from glucose (C6H12O6). Which molecule is required for animal cells to obtain the MOST energy possible from a molecule of glucose?
A. Water
B. Oxygen
C. Lactic Acid
D. Carbon Dioxide
B. Oxygen
Which is a primary function of a vacuole in a cell?
A. Enzyme production
B. Protein synthesis
C. Storage
D. Reproduction
C. Storage
Why must DNA replication have to occur before a cell can divide by mitosis?
A. To maintain the same number of chromosomes in the daughter cells as in the parent cell
B. To cause one of the cells produced to have double the number of chromosomes as the parent cell.
C. To allow crossing over to occur in each of the cells produced.
D. To cause all the cells produced to have half the number of chromosomes as the parent cell.
A. To maintain the same number of chromosomes in the daughter cells as in the parent cell
During translation, what does the tRNA deliver to the ribosome?
A. Amino Acids
B. DNA
C. mRNA
D. Proteins
A. Amino Acids
Which best explains why the rate of biochemical reaction decreases at high temperatures?
A. The activation energy increases.
B. The shape of the enzyme changes
C. The enzyme-substrate complex changes
D. The bonds between substrates are broken
B. The shape of the enzyme changes
How does the body of a runner keep up with the demand for energy when cellular oxygen levels are low?
A. Through energy production in mitochondria
B. Through aerobic respiration in the plasma membrane
C. Through ATP produced directly from sunlight
D. Through anaerobic respiration in cytoplasm
D. Through anaerobic respiration in cytoplasm
Which determines the function of a specialized cell?
A. The type of RNA in the cell
B. The number of ribosomes in the cell
C. The number of chromosomes in the cell
D. The active genes in the cell
D. The active genes in the cell
What would most likely be produced when a cell with eight chromosomes undergoes mitosis?
A. Two cells with four chromosomes
B. Two cells with eight chromosomes
C. Four cells with four chromosomes
D. Four cells with eight chromosomes
B. Two cells with eight chromosomes
What is the difference between the DNA of a dog and the DNA of a fly?
A. The type of sugar building blocks
B. The sequence of nucleotides
C. The strength of hydrogen bonds
D. The strength of covalent bonds
B. The sequence of nucleotides
Salivary amylase is an enzymes in humans that breaks down starches. What substance would humans have difficulty digesting without this enzyme?
A. Lipids
B. Nucleic Acids
C. Proteins
D. Carbohydrates
D. Carbohydrates
A student noticed that the freshwater plant, Elodea, produced bubbles when placed in direct light. What could the student most likely conclude?
A. Bubbles of carbon dioxide were produced as a result of photosynthesis.
B. Bubbles of carbon dioxide were produced as a result of cellular respiration.
C. Bubbles of oxygen were produced as a result of photosynthesis.
D. Bubbles of oxygen were produced as a result of cellular respiration.
C. Bubbles of oxygen were produced as a result of photosynthesis
How can cells from the same organism [nerve cells, muscle, blood, etc] have such different shapes and functions?
A. As each cell differentiates, the DNA changes so that each type of cell has different DNA once it reaches maturity.
B. Mutations in the cells' nuclei lead to new combinations of DNA, resulting in different shapes and functions in the different types of cells.
C. During differentiation, different parts of the DNA in each type of cell are activated, resulting in the different structure and function of the cells.
D. During differentiation, different types of cells produce proteins which destroy the nonactive DNA, leading to cell specialization.
C. During differentiation, different parts of the DNA in each type of cell are activated, resulting in the different structure and function of the cells.
The chemical colchicine disrupts cell division. Which cell process would most likely stop if colchicine were added to a culture of human liver cells?
A. Mitosis
B. Meiosis
C. Crossing Over
D. Active Transport
A. Mitosis
Which best summarizes the role of DNA in the production of proteins?
A. DNA moves to the cytoplasm to build proteins.
B. DNA transports amino acids to the ribosomes to make proteins.
C. DNA contains the instructions used to make proteins.
D. DNA breaks hydrogen bonds between amino acids