TAKS. Objective 1. Objective 1: The Student will demonstrate an Understanding of Nature. The Student will: conduct field and laboratory activities using safe environmentally appropriate, and ethical practices. use scientific methods during field and laboratory investigations.
The Student will:
Field activities are different from activities conducted in the lab.
Field activities include situations where students collect data
outside of a formal laboratory situation. They should include field trips
in and around the campus and should closely simulate real time situations.
Field work is no different than lab work in that certain safety and ethical
practices must be applied. The students must understand that there are
certain rules that must be applied in both cases.
The scientific method is a series of steps used to help solve a problem.
The method is a logical approach to help determine if the data collected
is sufficient to answer the question.
Steps of the Scientific Method
Define the problem
Research the problem
Develop a hypothesis
Develop an appropriate controlled experiment
Collect and analyze the data
Form a conclusion
A. Plan and implement investigative procedures including asking questions,formulating testable hypotheses, and selecting equipment and technology
3. Based on the above data, which of the following hypotheses could be correct?
a). Tadpoles enjoy a slightly basic environment.
b). Frogs cannot reproduce well in an acidic environment.
*c). Tadpoles prefer a slightly acidic environment.
d). The larger the number of tadpoles the higher the pH of the environment.
What is the Metric System?
If one wants to change a large value to a lower value move the decimal point to the right.
Example: Change 23 Kilograms to grams.
23 kilograms ---------------> 23,000 grams
3 decimal points ---------->
decimal point to the left.
234 milligrams to grams.
234 milligrams ---------------> 0.23 grams
<----------- 3 decimal points
Critical thinking skills are developed over a long period of time.
Students must be given the opportunity to develop these skills.
The best way to develop these skills is to allow the students to
gradually take control of the investigative process in the class.
They must use the scientific method to plan, investigate, and
analyze the data collected. Open ended questions requiring critical
thinking will allow the student to explore their answers in a way
That is non threatening.
the reaction). This will allow the substrate to be split into its parts.
the Electron Transport System (ETS).
the cell’s cytoplasm.
6CO2 + 6H2O ------C6H12O6 + 6O2
Replication: The process by which a molecule of DNA will make
an exact copy of itself.
The DNA will unwind and unzip splitting apart
Each exposed side of the DNA will pick up their complementary bases.
Each DNA will rewind.
Protein Synthesis of the organization of living systems.
Genetic problems are worked out using a structure called the
Punnett Square. The square is used to determine the chances
an offspring will receive a particular trait.
This is considered a monohybrid cross, since it deals with one
largest to smallest.
person has Kleinfelter's Syndrome.
line. The colored shape represents a recessive phenotype (bb).
Circulatory mutations: Transports materials throughout the organism.
Digestive: Digests and absorbs food.
Respiratory: Exchanges oxygen and carbon dioxide with the environment.
Excretory: Rids the body of metabolic wastes and maintains the organism’s water balance.
Endocrine: Controls the chemical process of the organism.
Reproductive: Propagates the species
Skeletal: Supports and gives form to the organism
Muscle: Produces movement and helps maintain body temperature
Integumentary: Protection and regulation.
Nervous: Controls and coordinates the organism. Senses and reacts to the environment.
Immune: Protects the organism from foreign invaders.7. Interpret the functions of systems in organisms
Some bacteria are pathogenic (disease causing). of the interdependence of organisms and the environment.
If they find their way into other organisms, diseases such as: Diphtheria, Strep throat, Botulism, and scarlet fever can develop.
Not all bacteria are pathogenic.
Many are useful in decaying dead material helping to recycle valuable materials.
Bacteria are also used to make many foods taste better. Yogurt is produced due to bacterial action.
They also help certain plants (legumes) produce fertilizer from atmospheric nitrogen.
Bacteria found on the skin helps keep pathogenic fungi from harming the body.2. Identify and describe the role of bacteria in maintaining health