7th Gr: Complete at least the first page of your Study Guide. I plan to review on Tuesday, Tuesday night's homework will be to complete page 2 and any page 3, then we test on Wednesday. Some additional definitions that should be in your notes but if not, you can find them here:
1. What is meiosis? Division of sex cells (eggs and sperm). Mitosis, however, is how the body reproduces body cells to replace dead cells.
2. What are Punnett squares? Diagrams that are used to show the likelihood of each outcome of a breeding experiment. 3. What is a pedigree? A tree (organizer) constructed from data collected on a single trait within a family.
4. What is a carrier? An organism that carries and transmits a disease without showing signs of the disease; genetic disease in a carrier with heterozygous genotype where the dominant allele masks the recessive, disease-causing allele.
5. What is an organism's genotype? An individual's pair of alleles for a specific gene or group of genes that determine a trait.
6. What is an organism's phenotype? An organism's observable traits.
7.Chromosome - a strand of DNA that contains the genes that store hereditary information. Normal human body cells contain 23 pairs (46) of chromosomes.
6th Gr: HW: 1) Next 8 questions on study guide; & 2) Copy down these terms to your vocab section:
Acid - a chemical that, in water, forms a solution with a pH below 7. Ex: HCl, H2SO4, HCO3, HNO3. The lower the pH below 7 means the acid is more concentrated. Acids have certain properties (react with indicator chemicals to change colors [pH <7], corrosive to metal & tissue, sour taste, conduct electricity). An acidic substance has properties of acids.
Base -a chemical that, in water, forms a solution with a pH above 7. Ex: NaOH, KOH, Ca(OH)2, NH4OH. The higher the pH above 7 means stronger, more concentrated base. Bases have certain properties (react with indicator chemicals to change colors (pH >7), corrosive to tissue, bitter taste, slippery feel, conduct electricity). An basic substance has properties of bases.
INDICATOR - is one of many chemicals that change color in the presence of certain types of other chemicals (ex: acids or bases).
Neutral - pH of 7 indicates that the solution is neither acidic nor basic. Ex: water.
7.Chromosome - a strand of DNA that contains the genes that store hereditary information. Normal human body cells contain 23 pairs (46) of chromosomes.
6th Gr: HW: 1) Next 8 questions on study guide; & 2) Copy down these terms to your vocab section:
Acid - a chemical that, in water, forms a solution with a pH below 7. Ex: HCl, H2SO4, HCO3, HNO3. The lower the pH below 7 means the acid is more concentrated. Acids have certain properties (react with indicator chemicals to change colors [pH <7], corrosive to metal & tissue, sour taste, conduct electricity). An acidic substance has properties of acids.
Base -a chemical that, in water, forms a solution with a pH above 7. Ex: NaOH, KOH, Ca(OH)2, NH4OH. The higher the pH above 7 means stronger, more concentrated base. Bases have certain properties (react with indicator chemicals to change colors (pH >7), corrosive to tissue, bitter taste, slippery feel, conduct electricity). An basic substance has properties of bases.
INDICATOR - is one of many chemicals that change color in the presence of certain types of other chemicals (ex: acids or bases).
Neutral - pH of 7 indicates that the solution is neither acidic nor basic. Ex: water.
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