Humans have 46 chromosomes in our body cells
23 pairs of chromosomes
The pairs are called homologous chromosomes
22 pairs of autosomes-chromosomes that tell everything about us accept our gender
1 pair of sex chromosomes
What is a gene?
A gene is a segment of DNA that codes for a trait
Examples of traits: hair color, skin color, ear shape, hairline, rolling the tongue, hitchhikers thumb.
All cells contain the same DNA, but only certain genes are turned on based on the fun
What is the cell nucleus?
1. A structure in the cytoplasm surrounded by a membrane (nuclear membrane) that contains / protects
most of a cells DNA
2. What is the main difference between prokaryotic and eukaryotic cells?
Eukaryotic cells hav
Final Exam Review
Unit 1: Chemistry of Life
o Identify the three subatomic particles and their significance.
o Recognize the difference between covalent, ionic and hydrogen bonds and
understand the functionality of the bonds.
Dihybrid Crosses Notes
What are they?
Dihybrid Cross: Looks at 2 traits at the same time from different chromosomes
Creates a Punnett Square with 16 boxes
Before starting the Punnett square, you must first determine the possible gametes from each
Unit 3 Summative Lab
Determining the Unknown through Periodic Trends
On the periodic table, magnesium, calcium, strontium and barium are all in Group
2. These elements will be used in the lab. Group 2 has 2 valence elec
Unit 9 Summative Lab
Designing a Hand Warmer Using Calorimetry
The chemical that was chosen to use in the hand warmer was calcium chloride. Calcium chloride
is a skin and eye irritant, and is also hazardous when ingested or inhaled.
The chemicals used in this experiment were the acid in the pineapple juice and sodium
hydroxide. If sodium hydroxide comes in contact with the eyes, flush eyes with water for 15 seconds. If
sodium hydroxide comes in contact with the skin, f