The rate of photosynthesis varies with changes that occur in environmental temperature. In order to see how exactly different temperatures affect the rate, we can experiment with cotyledon plants. First, gather all the materials: 5 same size cotyledon plants, 5 clear closed containers to place the plants inside, and oxygen sensor to measure the rate of photosynthesis. Make sure to have 5 rooms with different temperatures but same amount of light and water for all plants. Control the temperatures in the rooms. Have one room be room temperature, one 10 degrees lower than the room temperature, one 20 degrees lower, one 10 degrees higher than the room temperature, and one 20 degrees higher. Place all plants in the containers each in 5 different rooms. Water each plant 1 cup, leave the lights in the room, and let the plants sit for a night. Then, put the oxygen sensor in the containers one at a time from the plant in the coldest room to the one in the warmest room. Record the highest percentage of oxygen produced for each plant. Since O2 is one of the products of photosynthesis, the percentage of oxygen produced can tell us the rate of photosynthesis. The higher the percentage the faster the rate of photosynthesis. Enzymes are responsible for photosynthesis; therefore, the highest percentage of oxygen produced will be from the plant that was placed in the room with room temperature. This indicates that the rate of photosynthesis is the fastest when the temperature is just right
Bio Prelim Notes
Environment: It’s our surroundings or external factors and forces (conditions) that affect and organism or group of organisms.
Ecology: The study of interactions that take place between organisms and their environment.
Abiotic: Non-living factors
Biotic: Living factors
Ecosystem: Is an interaction between living and non-living factors in an environment.
grade Drop deadline – grade “W”
November 25th: Midterm 3
November 27th-December 1st: Thanksgiving Recess
December 4th: Final Day of Class
December 12th: Final 2-3:50 PM
Concurrent enrollment in a laboratory section of BIO 120 is required for successful completion of this course. Your performance in laboratory counts for 25% of your final grade. In order to pass this course you must receive 60% of total possible points in lab.
Glycolysis literally means "splitting sugars." In glycolysis, glucose (a six carbon sugar) is split into two molecules of a three-carbon sugar. Glycolysis yields two molecules of ATP (free energy containing molecule), two molecules of pyruvic acid and two "high energy" electron carrying molecules of NADH. Glycolysis can occur with or without oxygen. In the presence of oxygen, glycolysis is the first stage of cellular respiration[->0]. Without oxygen, glycolysis allows…
Intro to the Cell Notes:
The Cell Theory: a Brief History
Robert Hooke 1635-1703
Invented the first microscope
Viewed slices of cork and called it “cellula” (little rooms)
Antoni Van Leeuwenhoek 1632-1723
Worked with glass à huge improvement in quality of lenses à nearly 300x magnification became possible
First to observe:
Single-celled organisms “animalcules”
protists from pond water
bacteria from his mouth – was considered “father of microbiology”
banded pattern in…
Bio 1406 - Chapter 11 – Mendelian Patterns of Inheritance
11.1 Gregor Mendel
A. The Blending Concept of Inheritance
1. This theory stated that offspring would have traits intermediate between those of the parents.
2. Red and white flowers produce _____pink____________ flowers; any return to red or white offspring was considered instability in the genetic material.
3. Charles Darwin wanted to develop a theory of evolution based on hereditary principles; blending theory was of…
AQA GCSE Science BIOLOGY 2 Unit B2.3 Photosynthesis
Know that all green plants and algae use light energy to make their own food.
Know that all green plants and algae obtain the raw materials they need to make this food from the air and the soil.
Know that the conditions in which plants are grown can be changed to promote growth.
You should be able to use your skills, knowledge and understanding to be able to:
interpret data showing how factors affect the rate of photosynthesis…
I. Evolution - Descent with modification; the idea that living species are descendants of
ancestral species that were different from present day ones; also the genetic
changes in a population over generations.
*Changes over time
1. Ideas before Darwin
a. Ancient Greeks
b. Fossil Record
c. Heritability was known but not understood
d. 1800 - Jean Baptiste Lamark - evolution by inheritance of acquired
2. Darwinian Evolution…
Be able to describe the different disciplines of Forensic Science and its applications.
1. The forensic scientists must remain an advocate only for the best that reliable science can bring to the data that we call “evidence”.
2. The forensic job is exciting but we must remember that often dealing with death it can be emotionally draining.
3. To be a forensic scientist it requires the appropriate integration of basic human emotions known as reason.
4. One important characteristic…
Main Idea: populations of species are described by density, spatial distribution and growth rate
* all species occur in groups called populations
* pop. Density
* spatial distribution
* growth rate
* used to classify pops of org
* Population Density: is the number of orgs per unit area
* Dispersion: the pattern of spacing of a…
Bio notes chap 7
The lipoid bilayer serves as barrier to any molecules that are not small and hydrophobic. Even single atoms that are tiny will not penetrate the lipid bilayer if they are changed (ions)
Co2, 02, n2, steroid hormone and really among the only molecules that can freely move thus the bilayer.
q) how can a cell exchange polar larger molecules with its environment?
a) By placing channels, pores, carriers in the lipid bilayer.
Most channels and carriers etc are made of proteins that are…