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Definition
Endosymbiotic organelle of bacterial origin that possess its own DNA.
(Further, Mitochondrial DNA is responsible for genetic adaptations in populations living in colder climates that allow them to create more body heat) CHAP6 |
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Definition
solar energy converted to chemical energy - sugars (high energy electrons). CHAP6 |
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First Law of Thermodynamics |
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Definition
Energy cannot be created or destroyed. Energy CAN be transformed, converted from one form to another. CHAP6 |
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Second Law of Thermodynamics |
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Definition
Energy transfer always results in a greater amount of entropy ("disorder") in the Universe.
With energy transformation, a portion of the energy is converted to heat. CHAP6 |
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Examples of increases in entropy |
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Definition
salt dissolves in H2O, a bicycle rolls downhill. CHAP6 |
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Sugars combine to form ...... CHAP6 |
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short-term energy storage is accomplished by... |
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Long-term energy storage is accomplished by... |
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Many inherited disorders are caused by an inability to produce a specific...
These facilitate every chemical process.
The production of ... is encoded by units of DNA called genes. CHAP6 |
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Phenylketonuria, Tay-Sachs Disease. |
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examples of disorders caused by the inability to produce a specific enzyme or enzymes. |
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breaks down lactose and only lactose. CHAP6 |
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composed of glucose and galactose. only the enzyme lactase can break down lactose in the body. CHAP6 |
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A set of enzymatically controlled steps. Each enzyme performs a specific task. The product of one reaction becomes the substrate for the next. CHAP6 |
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The sum of all chemical reactions within a cell or larger organism. CHAP6 |
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an amount of energy needed to start a reaction. CHAP6 |
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Activation Barriers and Enzymes. |
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Definition
enzymes bind to their substrates. Substrate molecules become more vulnerable to chemical alteration. Activation energy is lowered. |
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Removing sugars from glycogen molecules |
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Definition
...releases energy, CHAP6 |
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The conversion of ADP to ATP |
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Definition
...requires energy. CHAP6 |
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Glucose + O2 -> CO2 + H2O + Energy
or
36 ADP + 36 P -> 36 ATP |
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Definition
Cellular Respiration. CHAP7 |
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Term
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Definition
...needs a constant supply of glucose and O2 because it cannot store either. The brain can only go 4-6 minutes without oxygen after the heart has stopped. CHAP7 |
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ADP + P -> ATP requires energy
ATP -> ADP + P releases energy |
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Definition
the formation of ATP. CHAP7 |
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Energy from food is required to... |
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Definition
...to push a third phosphate bond in ATP. CHAP7 |
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Term
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Definition
is the final electron acceptor in the breakdown of glucose.
serves as a trashcan for energy poor electrons in the breakdown of glucose. CHAP7 |
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Definition
the loss of electron(s) to another molecule CHAP7 |
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Definition
the gain of electron(s) from another molecule CHAP7 |
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Definition
...is reduced. And vice versa. Oxidation and Reduction always occur together. CHAP7 |
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Term
NAD (Nicotinamide Adenine Dinucleotide> |
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Definition
The most important electron carrier in energy transfer. CHAP7 |
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Term
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Definition
provides ATP for a burst of energy. The word means "sugar splitting."
First stage of cellular respiration. No oxygen is used. Occurs in the cytosol. CHAP7 |
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Term
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Definition
The main function is to transfer electrons to electron carriers like NAD-.
This process oxidizes pyruvates. It occurs in the mitochondrion. 2 pyruvates from glycolysis enter the mitochondrion from the cytosol by active transport. the pyruvates are transformed into acetyl coenzymeA.
first, the carboxyl group is removed and released as a molecule of CO2. pyruvate was a three carbon molecule, but now has one molecule of CO2. The two carbon molecule is oxidized to form acetate. Tbe lost electrons are transferred by an enzyme to NAD+, storing the energy as NADH. Finally, coenzymeA (a derivate of Vitamin B) is attached to acetate. It is an unstable bond which makes it very reactive which equals high energy. The acetyl group is fed into the KREBS cycle by being attached to oxaloacetate.CHAP7 |
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Electron Transport Chain (ETC) |
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Definition
Electron carriers drop off their electrons. 32 of the 36 ATP molecules made during all phases of cellular respiration come from the Electron Transport Chain. |
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Glucose -> 2 pyruvate molecules |
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Definition
Glycolysis.
Pyruvate is slightly more oxidized than glucose. CHAP 7 |
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Definition
Adding phosphate groups to a molecule. CHAP7 |
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produces 4 ATP molecules. CHAP7 |
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Definition
can go through all of cellular respiration - aerobic respiration, KREBS cycle, anaerobic respiration. CHAP7 |
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Definition
performs chemiosmosis: uses the energy in the concentration gradient between the H+ found on either side of the mitochondrion membrane to make ATP. CHAP7 |
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Definition
energy stored as H+ gradient across a membrane to drive cellular work. CHAP7 |
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Definition
Hydrogen ions are pumped against their concentration and electrical gradients through an enzyme called ATP synthase. CHAP7 |
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Carbohydrates are made by |
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Definition
taking the electrons from water and supercharging them with the power from sunlight so that they can be binded to CO2. CHAP8 |
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Plants do not absorb the green wavelength of light. Photosynthesis is driven mainly by blue and red wavelengths. CHAP8 |
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site of Photosynthesis. house chloroplasts. CHAP8 |
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Definition
liquid inside chloroplast, which is inside the mesophyll cells. CHAP8 |
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Definition
suspended network of membranes in stroma, in cholorplast, in mesophyll cell, in plant. CHAP8 |
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Definition
all steps of photosynthesis occur within the... CHAP8 |
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Definition
a stack of thylakoid. CHAP8 |
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Term
critical events of the Light Reactions |
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Definition
H2O is split in photosystem II which gives us breathable oxygen. Solar energy is transformed into chemical energy: the boosting of an electron and then its transfer to a primary electron acceptor. |
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Term
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Definition
light independent reaction and the second stage of photosynthesis.
joins CO2 to a low energy sugar to make a high energy sugar. the NADPH and the ATP made from the light reactions are formed in the stroma of the thylakoid.
takes place in the stroma.
IN: 3 CO2, 9 ATP, 6 NADPH
OUT: glucose |
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4 sets of reactions in the Calvin Cycle |
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Definition
Carbon fixation, Energizing the sugar, Exit of product, Regeneration of RUBP |
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Definition
five carbon sugar that is regenerated in the Calvin Cycle |
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IN: sunlight, 2 H2O
OUT: oxygen, NADPH, ATP |
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the study of the physical inheritance of living things. CHAP9 |
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cause illness like cancer, sickle cell anemia, diabetes, heart disease, etc. |
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four components of a gene |
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Definition
Cytosine C
Thymine T
Adenine A
Guanine G
CTAGATG could be one gene,
TAGCCGAT could be another. |
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Term
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Definition
up to 25 million per second in a body. Your brain and central nervous system cells are formed in utero and usually do not divide. Your bone marrow cells, red blood cells, constantly divide. 180million red blood cells are made every minute.
The process takes one cell and makes two daughter cells. each daughter is an exact copy of the parent.
1.Replication
2.Mitosis
3.Cytokinesis |
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Term
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Definition
1.Double helix unwinds and separates. the staircase splits down the middle.
2.Each single strand becomes a template pattern from which a new strand of DNA is created.
3. two new DNA strands are created, half of the strand is from the parent DNA and the other half is new. |
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# Human chromosomes in a cell. |
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Definition
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Term
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Definition
protein with DNA wrapped around.
folds in on itself tightly to make a chromosome. |
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each strand of a duplicated chromosome. |
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Term
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Definition
for every chromosome that we inherit from our mothers, we inherit chromosome with similar genes on it from our father.
for example, chromosome #10 has a copy from our mothers and one from our fathers. the same is true for every other chromosome in our cells.
so, all of our chromosomes are similar in size and function. that is what homologous means. |
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Term
the only exception to a homologous pair of chromosomes is... |
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Definition
the sex chromosomes.
(an AUTOSOME is any chromosome that is NOT a sex chromosome) we have 22 autosomes in our cells. |
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Term
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Definition
pattern of cell growth, genetic replication and division.
2 main phases: INTERPHASE where the cell prepares for division, and MITOTIC PHASE which includes mitosis and cytokinesis. |
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the separation of the duplicated chromosomes |
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the physical separation of the cell into 2 daughter cells. |
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Definition
process by which eggs and sperm halve their chromosomal count to 23.
(mitosis copies and passes on 46 chromosomes)
the process of turning a diploid cell into a haploid cell. |
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any cell that is not egg or sperm. |
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Term
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Diploid: somatic cells have 2n chromosomes. N is the Haploid number (the number of chromosomes a gamete has). It is half the number of chromosomes found in a somatic cell. Humans: 23n, birds: n would be different. |
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Definition
occurs in Prophase I when the chromosomes are condensing. They become entangled and exchange parts. Only the same parts of the chromosome can exchange. |
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Definition
happens in Metaphase I when the homologous pairs line up at the metaphase plate. Chromosome from the mother can be on one side of the metaphase plate and a chromosome from the father can be on the other side.
ensures that all daughter cells do not end up with all chromosomes from the mother or father. |
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Term
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Definition
(same phases as mitosis) prophase, metaphase, anaphase, telophase, with differences.
ONE. Homologous chromosomes undergo crossing over in prophase I.
TWO. Homologous pairs line up at the metaphase plate during metaphase I. One chromosome from the mother and one chromosome from the father.
THREE. Homologous pairs undergo independent assortment at the metaphase plate during metaphase I. |
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Homologous chromosomes are pulled apart. |
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at the end of cytokinesis, there are two daughter cells with homologous chromosomes. |
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Just like mitosis, but at the end of cytokinesis there are four daughter cells. The chrom. # has been halved. Daughter cells are now haploid. CHAP10 |
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