Alicia Lin Chen
BioNews # 1
The Cotinga birds
The person who was involved in this article was the author Jake Berv, a Ph.D. student in
the Fuller Evolutionary Biology Lab at the Cornell Lab of Ornithology and also another person
who he worked w
Title: Comparing Mendels Ratios
Problem: How will Mendels ratios of a dihybrid cross from heterozygous parents
compare to natures ratios?
Background Information: In fairies, long wings are dominant over short wings, and
pointed wings are d
1. Aristotle concluded that living things arise from non-living materialspontaneous
2. Alhazen (965-1040) or Abu Ali Hasan Ibn al-Haitham, an Iraq physicist. His book Kitabal-Manadhirn was translated into Latin and greatly influenced western s
Introduction to Chemistry
Proton- positively charged particles.
Neutron- neutrally charged particles.
Electron- negatively charged particles.
Ionic Bond- formed when one or more electrons are transferred from one atom to another.
Covalent Bond- forms whe
1. Plasma (cell) membrane- thin, flexible barrier around a cell; regulates what enters and
exits the cell.
2. Cell wall- strong supporting layer around the cell membrane in plants, algae, and some
bacteria; provides support and protection for a cell.
o All organisms are composed of one or more cells.
o The cell is the basic unit of organization of organisms.
o All cells come from pre-existing cells.
Differences between Plant & Animal cells:
o Plant cells have chloroplasts.
o Plant cells
Introduction to Chemistry Review
1. How are acids and bases different? How do their pH values differ?
Acids are compounds that form hydrogen ions (H+) in a solution, while bases are
compounds that produce hydroxide ions (OH-) in solution. The pH values of
Enzyme- proteins that act as biological catalyst.
Catalyst- a substance that speeds up the rate of chemical reaction.
Substrate- the reactants of enzyme-catalyzed reactions.
Active site- the part of an enzyme that interacts with the subs
Permeability of Gummy Bears
Problem: Are yellow gummy bears more permeable to both .10% and .20% salt solution
than red gummy bears?
Identification of Variables:
o Independent Variable: salt solutions
o Dependent Variable: gummy bears
Macromolecules are made from thousands or even hundreds or thousands of smaller
Macromolecules are formed by a process known as polymerization, in which large
compounds are built by joining smaller ones together.
Monomers are the
Progeria, or Hutchinson-Gilford Syndrome, is an extremely rare autosomal dominant
genetic disorder. The probability of passing on Progeria is one in four million. The word Progeria
comes from a Greek work meaning prematurely old.
Progeria was fir
The Turner Syndrome is a sex-linked disorder in which a female has only one complete X
chromosome and only part or none of the second. The Turner Syndrome was discovered in 1938
in the United States. It was named after the American physici
The Edwards Syndrome, or Trisomy 18, is an autosomal trisomy. The Edwards Syndrome
is the second most common autosomal trisomy, after Down Syndrome. The Edwards Syndrome
affects the 18th chromosome. The Edwards Syndrome occurs when a baby
Mendel is the father of genetics. Inheritance is traits that get passed down from other generations
to better your survival. Phenotype displays the physical form of a trait. Genotype displays the
genetic form of a trait. Carrier is an organism that carrie
Gummy Bear/Osmosis Lab
2 yellow and 2 red Gummy Bears
1500 mL .10% Salt Solution
1000 mL .20% Salt Solution
Glass Stirring Rods
1 250 mL beaker
2 30 mL beakers
Electronic Balance (g)
Water is an important part of all life.
Water molecules are made up of three atoms: two hydrogen molecules and one oxygen
Hydrogen atoms are smaller and have a positive charge while oxygen atoms are larger
and have negative char
Spore formation is when many bacteria for structures called spores because growth
conditions become unfavorable. Spores can remain dormant for months or even years while
waiting for more favorable growth conditions. One type of spore is an endospore, whic
Identification of Variables
HYPOTHESIS & RATIONALE:
MATERIALS & METHODS:
Procedures (Safety Symbol & Precaution)
DATA COLLECTION, PROCESSING, & PRESENTATION:
Oxygen atoms have a much stronger attraction for electrons than hydrogen atoms. A molecule in
which the charges are unevenly distributed is called a polar molecule because the molecule is
like a magnet with poles. A water molecule