WorksheetsBiol 1407
Total questions: 17
Worksheet time: 9mins
What is the term for metabolic pathways that release stored energy by breaking down complex molecules?
Glycolytic pathways
Redox pathways
Catabolic pathways
Anabolic pathways
Which molecule functions as a reducing agent (electron donor) in a redox or oxidation-reduction reaction?
Loses Electrons and Loses Potential Energy
Gains Electrons and Loses Potential Energy
Loses Electrons and Gains Potential Energy
Gains Electrons and Gains Potential Energy
Which of the following statements describes the result of this reaction: C6H12O6 + 6O2 --> 6 CO2 + 6 H2O?
C6H12O6 is reduced and CO2 is oxidized
C6H12O6 is oxidized and O2 is reduced
C6H12O6 is reduced and O2 is oxidized
C6H12O6 is oxidized and CO2 is reduced
Which term describes the degree to which an element attracts electrons?
Electronegativity
Valence electron
Ionization energy
Atomic radius
The oxygen consumed during cellular respiration is involved directly in which process or event?
Fermentation
Glycolysis
Electron transport chain
Krebs cycle
In glycolysis, ATP molecules are produced by
Oxidative phosphorylation
Substrate level phosphorylation
Chemiosmosis
Photophosphorylation
During glycolysis, when each molecule of glucose is catabolized to two molecules of pyruvate, most of the potential energy contained in glucose is
Used to reduce NAD+
Stored in pyruvate
Released as heat
Converted to ATP
Which statement about the citric acid cycle is correct?
It is the first step in cellular respiration
It produces ATP by oxidative phosphorylation
It occurs in the cytoplasm of the cell
The last reaction in the citric acid cycle produces a product that is a substrate for the first reaction of the citric acid cycle
Cytosine makes up 42% of nucleotides, how much does thymine make up?
8% Thymine
42% Thymine
16% Thymine
21%Thymine
Histamine is a chemical substance released in inflammatory and allergenic responses. Histamine diffuses across the plasma membrane to bind to the H1 receptor inside the cell. When a neuron responds to a particular neurotransmitter by opening gated ion channels, the neurotransmitter is
A steroid
A second messenger
A signal molecule
A hormone
Apoptosis is potentially threatening to neighboring cells because:
It would cause the cells around it to undergo apoptosis
It would not be threatening
Lysosomal enzymes exiting the dying cell would damage surrounding cells
The organelles would be floating between intact cells
Why do chromosomes coil during mitosis?
To replicate
To allow the chromosomes to move without becoming entangled and breaking
To share dna
It doesn't coil during mitosis
Effects on a nonsense mutation gene
It adds a single nucleotide that alters the codon to code for a different amino acid
It causes a complete alteration of the amino acid sequence of a protein
Change to a single DNA letter
It introduces a premature stop codon into the mRNA
Which of the following terms best describes the forward reaction?
Exergonic, G<0
Endergonic, G>0
Exergonic, G>0
Endergonic, G<0
Which of the following organisms do not have a nucleus?
Amoebozoa Cell
E. Coli
Shiitake Cell
Onion Cell
In a monohybrid cross between two true-breeding parents would result in the F1:
All Homozygous
1/2 Heterozygous 1/2 Homozygous
All Heterozygous
1/4 Homozygous 3/4 Heterozygous
The two alleles for each gene are placed in different gametes. This is which principle of Mendelian Inheritance?
Law of Dominance
Law of Independent assortment
Law of Segregation
