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70 Cards in this Set
- Front
- Back
The gain of electrons by an atom or a molecule is referred to as |
Reduction |
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Consider the following equation: FAD + 2H^+ +2e- ----> FADH2. Which statement is true of the equation? |
FAD is being reduced in the reaction, forming FADH2 |
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In an election transport chain, H+ ions are pumped across a membrane in order to allow for |
Chemiosmotic phosphorylation, the production of ATP, the H+ concentration gradient |
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Which statement is not true of a chloroplast |
Chloroplast lack electron transport systems |
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Which of the following is not an electron acceptor or electron carrier |
ATP |
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Which of the following plays a role in chemiosmotic oxidative phosphorylation |
A source of electrons, a terminal electron acceptor, a hydrogen pump, ATP synthase all play a role |
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What is an example of an enzymatic cycle |
Krebs cycle and the Calvin cycle of photosynthesis |
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The overall reactants for photosynthesis are |
CO2 and H2O |
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Which of the following is the most accurate transfer of energy during photosynthesis |
Light, excited electrons in pigments, C6 H12 O6 |
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Electrons lost by chlorophyll-a in photosystem 2 (at the beginning of photosynthesis) are replaced by electrons lost from |
Enzymatic breakup of water molecules |
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Which of the following is the terminal electron acceptor at the end after (photosystem 1) of the light reaction of photosynthesis |
Nadp+ |
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What causes ATP synthase to make ATP from ADP and phosphate |
The diffusion of hydrogen ions through the ATP synthase molecule |
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Which of the following diffuses into the leaves of a plant and is required for photosynthesis |
CO2 |
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Which of the following is not directly required for the Calvin cycle of photosynthesis |
O2 |
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In the Calvin cycle what molecule binds to fix carbon dioxide for eventual glucose production |
RuBP |
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What happens to the nadph produced in the light reactions of photosynthesis |
It is used to reduce molecules in the Calvin cycle |
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Which statement is not true of stomata |
When a plant is dehydrated the stomata will open |
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Which statement is not true of C4 and cam plants |
They are found in what tropical habitats where water is abundant |
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The overall reactants for the cellular oxidation of glucose are |
O2 and C6H12O6 |
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What is the overall purpose for the cellular oxidation of glucose |
Produce ATP |
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Glycolysis does not produce |
CO2 |
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Which statement is true of fermentation |
During fermentation yeast produces ethanol and carbon dioxide |
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What is the terminal electron acceptor of the mitochondrial electron transport system in the cellular oxidation of glucose |
O2 |
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Which process produces the most ATP in the cellular oxidation of glucose |
Mitochondrial chemiosmotic oxidative phosphorylation |
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What is the importance of the Krebs cycle in the cellular oxidation of glucose |
It produces large quantities of nadh and fadh2 which are then used for mitochondrial chemiosmotic oxidative phosphorylation |
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Which statement is not true of mitochondria |
Plant cells lack mitochondria |
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The cellular oxidation of glucose yields a net gain of how many ATP per glucose if the cell has mitochondria and oxygen is plentiful |
36 |
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The cellular oxidation of glucose yields a net gain of how many ATP per glucose if the cell lacks mitochondria or if oxygen is not present |
Two |
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Which of the following does not occur within the mitochondria |
Glycolysis |
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How is water produced in the mitochondria |
Electrons and hydrogen form nadh and fadh2 are eventually picked up by the O2 and the electron transport system forming H2O |
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Most of the producers in ecosystems are plants where do plants get the ATP they need to live |
From the cellular oxidation of glucose molecules they produce themselves in the process of photosynthesis |
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Where do consumers in ecosystems get the ATP they need to live |
From the cellular oxidation of glucose molecule molecules obtain by feeding on other organisms |
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Which of the following is not a product of the cellular oxidation of glucose |
Oxygen |
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Which molecule contains all the genetic instructions of an organism |
DNA |
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What is true of DNA |
DNA is a double helix, DNA is composed of monomers called nucleotides, there are four different types of nucleotides in DNA |
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Consider the section of DNA listed below which statement is true 5'TACAGGGCCC3' 3'ATGTCCCGGG5' |
Only one of the two strands codes for a protein |
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Nucleic acids DNA and RNA are composed of monomers called |
Nucleotides |
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Which of the following is true of RNA |
RNA is found in the nucleus and in the cytoplasm |
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Which statement is not true of the central dogma |
Both transcription and translation occur in the nucleus of the eukaryotic cells |
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What type of RNA is composed of codons that code for the amino acid sequence of a protein |
M-RNA |
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During the replication of DNA the enzyme _____ unwinds the double helix of DNA and the enzyme _____ builds a complementary strand along each original strand of DNA |
Helicase; DNA polymerise |
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Telomeres are |
The ends of chromosomes |
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What is complementary to the following section of single-stranded DNA 5'TGGC3' |
3'ACCG'5 |
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Which RNA has an anticodon that is complementary to a specific codon and is attached to a specific amino acid and works with other RNAs to physician amino acids for chemical bonding to one another |
T-RNA |
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How many mRNA nucleotides in succession code for a single amino acid known as a codon |
Three |
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When a piece of mRNA is translated what region of the MRNA terminates the process of translation |
Stop codon |
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What is a difference between DNA and RNA |
DNA is typically longer than RNA, DNA contains the base thymine not uracil, DNA nucleotides contain a different sugar than the sugars in nucleotides DNA is double-stranded RNA single-stranded |
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Which type of RNA has the information for the amino acid sequence of a protein being produced |
MRNA |
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Translation occurs in the ____ and transcription occurs in the ____ |
Cytoplasm; nucleus |
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For transcription to begin RNA polymerase must bind to the |
MRNA |
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Which statement is not true |
All cells can divide an infinite number of times |
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Chromosomes replicate during which sub phase of interphase in the cell cycle |
The S subphase |
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In mitosis anaphase immediately follows |
Metaphase |
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Chromatids separate and are pulled to opposite ends of the cell during |
Anaphase |
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The nuclear envelope disintegrates, the sister chromatids coil and condense becoming visible under the light microscope, and the mitotic spindle begins to form in which stage of mitosis |
Prophase |
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Sister chromatids line up at the equator of the mitotic spindle in which phase of mitosis |
Metaphase |
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When a parent cell undergoes mitosis it produces _____ daughter cells all being _____ |
Two; genetically identical |
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Homologous chromosomes are separated in |
Meiosis |
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If a cell with a ploidy of 4n undergoes meiosis the daughter cells will have a ploidy of |
2N |
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Which of the following is a function of mitosis |
Asexual reproduction, growth, and cell placement |
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When a parent cell undergoes meiosis it produces _____ daughter cells all being _____ |
Four; genetically different |
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If a cell with a ploidy of 2n undergoes meiosis the gamites will have a ploidy of |
N |
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Gametes sperm and ovum are produced by |
Meiosis |
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Crossing over occurs in which phase of meiosis |
Prophase 1 |
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What statement is true of crossing over |
It causes sister chromatids of homologous chromosomes to be genetically dissimilar |
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Which of the following does not contribute to the genetic diversity of a species |
Mitotic cell division |
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The random alignment of homologous chromosomes during meiosis is called _____ and occurs during _____ |
Independent assortment; metaphase 1 |
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A chromatid is best described as |
One of the two identical strands of DNA in a double-stranded chromosomes |
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After mitotic cell division each daughter cell is _____ the size of the original parent cell and each new daughter cell grows to its mature size during _____ of the cell cycle |
50%; G1 Gap Phase 1 |
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A cell containing only one set of chromosomes is referred to as |
Haploid |