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What gives structure and its barrier? |
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Very selective so they can keep conditions inside the cell stable |
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Double layer made up of phospholipids |
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Composed of a hydrophobic head and a hydrophillic tail |
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Type of protein that allows molecules and ions to go through |
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Protein that interacts with specific molecules so they can cross plasma memberane. (cause of obesity) |
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Proteins that can recognize cell type and help guide cells together |
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Proteins have binding parts and have hormones that trigger changes |
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Proteins act in catalyzing certain reactions |
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Each cell membrane structure allows some substances but not others cross it in certain ways at certain times. |
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The net movement of like molecules or ions down a concentration gradient |
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Number of molecules/ions in a given volume. |
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Drives the movement of molecules & speeds up the reaction so the molecules will move down the concentration gradient |
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How steep the gradient is. |
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The higher the temperature, the faster the reaction |
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Something passes through the membrane without an energy boost (higher to lower) |
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-Lower to higher -Requires energy -Exocytosis & Endocytosis |
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Movement out of the membrane |
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When a solute is taken in |
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Passive movement of water molecules across a differentially permeable membrane |
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Water will move from a ____ concentration to a ____ concentration |
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The same concentration on each side, water shows no movement |
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Has a lower concentration of solutes than the fluid |
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Has a higher concentration of solute than the fluid |
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Water tends to diffuse from ____ to ____ |
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In this type of solution, sometimes the cell will burst because it fills with water |
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In this type of solution, a cell may shrink up because all water goes inside the cell |
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Was a monk, raised on a farm, kept good records, studied plants |
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Mendel used what type of a plant as an experimental plant? |
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Mendel performed what type of fertilization? |
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Why is the pea plant good? (4) |
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Definition
-Pea plant can fertilize itself
-True breeding
-Cross fertilizes easily
-Has good characteristics |
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Term
Units of information about specific traits. Located in the locus in the chromosome. |
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Have a pair of genes for each trait (2N). Ex: skin cells |
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Different molecular forms of the same gene |
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The particular alleles an individual carries |
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An individual's observeable traits |
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first generation offspring |
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second generation offspring |
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This type of cross is concerned with only one characteristic |
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When one gene is going to have an effect on two or more traits |
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Who had the Marfan Syndrome? |
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Term
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Definition
-Sample blood
-Put in centrifuge
-Colchine blocks cell division by not allowing spinolles to form
-Saline solution so cells will not pop
-stain cells
-Smash cells to put on a slide
-22 pairs of autosomes & 1 pair of sex chromosomes |
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Definition
To see exact state of genetic compliment of an individual |
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Unit of info of heritable traits |
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Possess pairs of homologous chromosomes |
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Slightly different form of molecular forms of the same gene |
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Some may go one way, some may go a different way |
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Males genetic combination |
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Woman's genetic combination |
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Specific chromosomes that are linked together & will always appear together |
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What you get when there is crossing over |
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Why are human genetics difficult to study? |
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Definition
Because of different environments, conditions, ect. |
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Chart of genetic combinations among individuals |
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Passed through autosomes and recessive genes. ex: albaism, sickle cell anemia.
Both mom and dad would have to have recessive gene |
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Definition
Autosomal recessive inheritance |
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Term
In autosomal recessive inheritance, _____ individual would be symptom free |
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Dominant gene would be expressed. Reduces change of offspring surviving. ex: Dwarfism |
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Autosomal dominant inheritance |
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Term
Mutated gene occurs only on x-chromosomes. Males are more often affected, because they have single 'x' not dominated by another gene |
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Definition
X-linked recessive inheritance |
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Term
After crossing over, part of the chromosome structure was replicated |
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A linear stretch of DNA within the chromosome becomes oriented in reverse direction |
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A broken part of a chromosome becomes attached to a nonhomologus chromosome |
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Loss of a segment of a chromosome |
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One extra, or one less, chromosome |
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3 or more of each type of chromosomes |
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Syndrome in which patient has 3 chromosomes instead of 2
An example of ____ |
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Definition
Down Syndrome
nondisjunction |
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Females that have only one 'x'. An XO syndrome. Become infertile, permature aging, shorter life expectancy. Caused by nondisjunction |
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Taller, slimmer than average, are fertile, within range of normal behavior |
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Nondisjunction in males. Sterile. Metnally retarded. |
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Definition
XXY or Klinefelter syndrome |
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Taller than average. Mentally retarded |
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