Scientific Method/CER
What does CER stand for?
Claim, Evidence, and Reasoning
When it is cold, one way the human body maintains normal temperature, is to constrict blood vessels to conserve heat and to prevent sweat glands from secreting fluid.
What characteristic of life is this?
Homeostasis
Lice feed on the skin, blood, or oil secretions of the human they infect. The human has an itchy scalp.
What type of symbiotic relationship is this?
Parasitic
Most of the life on Earth depends on which of the following trophic levels?
The most abundant gas in the atmosphere is?
Nitrogen - 78%
What are the steps of the scientific method?
Observation / Asking a Question
Form a Hypothesis
Design a Controlled Experiment
Record and Analyze Results
Draw Conclusions
Which of the following is NOT a characteristic of all living things?
A. growth and development
B. ability to move
C. response to the environment
D. Ability to to reproduce
B. Ability to move
Rams have head-butting contests to determine which male is dominant and can breed with the female sheep. Which type of relationship exists between the male rams?
Competition
In an energy pyramid, which way does energy flow?
What role do bacteria play during the nitrogen cycle?
It is January and Haley, Sarah, and Becky are tired of having cold feet while waiting for the school bus to come in the morning. They decide to design an experiment to test the effectiveness of wool, cotton, and nylon as insulators. They fill identical bottles with 200 ml of water at 100 C and place inside each sock. They take the temperature of the water after 20 minutes.
What is the independent variable?
wool, cotton, and nylon as insulators.
What is the correct order for the levels of organization in living systems from the simplest to the most complex?
Cells - tissues - organs - organ systems - organism
As these cows graze, they disturb insects that live in the grass such as grasshoppers. When the insects jump to get away from the catt, the egrets (birds) can catch the insects and eath them. What type of symbiotic relationship exists between the cow and the cattle egrets?
Commensalistic
Many organisms make up a food web.
Five animals have been identified in the food web below. Identify the organisms in the food web with it's "role".
Bottom - Producer
Middle - Primary Consumer
Top - Secondary Consumer
Daily Double: Explain the process of how Nitrogen is circulated in the food web.
Nitrogen enters the food web when plants absorb nitrogen compounds from the soil and convert them into proteins. Consumers get nitrogen by eating plants or animals that contain nitrogen.
It is January and Haley, Sarah, and Becky are tired of having cold feet while waiting for the school bus to come in the morning. They decide to design an experiment to test the effectiveness of wool, cotton, and nylon as insulators. They fill identical bottles with 200 ml of water at 100 C and place inside each sock. They take the temperature of the water after 20 minutes.
What type of graph would best display their data?
Bar Graph
Name 8 characteristics of life
Homeostasis
Organization
Genetic material
Reproduction
Adapt (Evolve)
Cells
Energy (metabolism)
Respond to the environment
Grow and develop
Water
Which of these best describes the relationship shown by this Kelp Forest Ecosystem Pyramid?
A. The Giant Sea Bass is a predator of the Sheephead
B. The Giant Sea Bass is the prey of the Sheephead
C. Sea Urchins are the prey of the kelp
D. Sheepheads are the predators of the Giant Sea Bass
A. The Giant Sea bass is a predator of the Sheephead
In the energy pyramid, there are 5000 kilo-calories available at the first trophic level(grasses). How much energy would be available for grizzly bears?
5
Explain how nitrogen is returned to the soil.
Nitrogen is returned to the soil via animals urinating, nitrogen returns to the water or soil and is reused by plants. OR when organisms die , decomposers transform the nitrogen in proteins and other compounds in ammonia. OR denitrification, some soil bacteria convert fixed nitrogen compounds back into nitrogen gas, which is returned to the atmosphere.
It is January and Haley, Sarah, and Becky are tired of having cold feet while waiting for the school bus to come in the morning. They decide to design an experiment to test the effectiveness of wool, cotton, and nylon as insulators. They fill identical bottles with 200 ml of water at 100 C and place inside each sock. They take the temperature of the water after 20 minutes.
Identify the constants that are listed for this experiment.
identical bottles with 200 ml of water at 100 C and a sock for each of them .
Write the characteristics of life based on the definitions below:
1. Life must be able to pass on genetic information from generation to generation
2. Life changes throughout time. Survival of the fittest and all that.
3. Life must be able to react to signals from the external environment.
4. Life must be able to obtain, use, and store energy.
5. Life must be able to the generation either asexually or sexually.
6. Life must maintain an internal balance.
7. Life must be able to increase in size and/or complexity over a lifetime.
8. All life is made of one or more of these specialized base units.
1. Genetic Material - Heredity
2. Adapt (Evolve)
3. Respond to the environment
4. Energy - metabolism
5. Reproduction
6. Homeostasis
7. Grow and develop
8. Cells
Asian carp, an invasive species, were introduced accidentally into Missouri aquatic ecosystems. Both the Asian carp and the native paddlefish are plankton feeders. After the introduction of Asian carp, the paddlefish populations immediately began to decline.
Based on the information provided, what type of limiting factor explains why the native paddlefish population is declining?
Biotic/Density Dependent Factor
Describe a food chain from the image.
Plant - Rat - Stoat
Illustrate the nitrogen cycle.
See Google Slide.