By: Carlos Galicia
Life Science
Welcome! Fellow humans to my blog and my learning life throughout life science and its wonders. The standards that I was assigned to learn were S7L1, S7L2, S7L3, S7L4, and S7L5. Remember, This is my journey through my 7th grade science class.
S7L1 Students will investigate the diversity of living organisms and how they can be compared scientifically.
A. Demonstrate the process for the development of a dichotomous key.
B. Classify organisms based on physical characteristics using a dichotomous key of the six kingdom systems. (archaebacteria, eubacteria, protists, fungi, plants, and animals)
http://mrsmaine.wikispaces.com/file/view/ejmcandypic.jpg/49142371/ejmcandypic.jpg
http://mrsmaine.wikispaces.com/file/view/ejmcandypic.jpg/49142371/ejmcandypic.jpg
The six kingdom systems are archaebacteria, eubacteria, protists, fungi, plants, and animals. By using the dichotomous key, you can put living organisms into their common groups, based on their characteristics.http://image.slidesharecdn.com/02-thesixkingdoms-general-110908210107-phpapp01/95/slide-1-728.jpg?cb=1315533736
This standard was more complicated so that is why it is going to have more information about this specific standard: S7L2
S7L2. The students will describe the structure and function of the cells, tissues, organs, and organ systems.
A. Explain that cells take in nutrients in order to grow and divide and to make needed materials.
B. Relate cell structures (cell membrane, nucleus, cytoplasm, chloroplast, mitochondria) to basic cell function.
C. Explain that cells are organized into tissues, tissues into organs, organs into systems, and systems into organism.
D. Explain that tissues, organs, and organ systems in the human body (e.i. digestion, respiration, reproduction, circulation, excretion, control, and coordination, and for protection from disease)
In addition to the organization, cells are the building block of life and is throughout the living organisms around we humans. Cells make up most of the living things through organization such as into tissues that are made out of specialized cells. That pattern will go throughout just like so: cells, tissues, organs, organ system, and then into the organism itself. In our body is also different type of organ systems that help us humans to live our lives safe and healthy. In addition to our body systems, we would need each and one of them so we can survive with methods such as homeostasis.
Cells also need nutrients in order to grow and divide, that is why they use active or passive transport in order to get the needed materials they need. The difference about the two transports is that active transport has the uses of energy, while the passive transport doesn't use energy and instead uses the permeable membrane. There are other ways the cell gets what it needs and its either from the two transports using a permeable membrane or selective membrane. (Depends on the type of transport the sell uses)
S7L3. Students will recognize how biological traits are passed on successive generations.
A. Explain the roles of genes and chromosomes in the process of inheriting a specific trait.
B. Compare and contrast sexual and asexual reproduction in organisms (bacteria, protists, fungi, plants, and animals).
C. Recognize that that selective breeding can produce plants or animals with desired traits.
Genetics is just the process of trait inheritance from parents to offspring. Usually the chromosomes would have the traits where it tells what characteristics the organisms have in order to make an offspring. The traits that show more would be the dominant allele rather than the recessive allele. The difference is that the dominant allele would show more to the offspring's characteristics or phenotype, the physical characteristics. The genotype is the make-up of the organism under consideration. There are different types of breeding that can have an effect on this type of situation. There is sexual reproduction, asexual reproduction, selective breeding, cloning, and genetic engineering.
Some of the cells or bacteria reproduce asexually by using some methods such as mitosis or meiosis. https://img2.blogblog.com/img/video_object.png
S7L4. Students will examine the dependence of organisms on one another and their environments.
A. Demonstrate in a food web that matter is transferred from one organism to another and can recycle between organisms and their environment.
B. Explain in a food web that sunlight is the source of energy and that this energy moves from one organism to another.
C. Recognize that changes in environmental conditions can effect the survival of both individuals and entire specie.
D. Categorize relationships between organisms that are competitive or mutually beneficial.
E. Describe the characteristics of Earth's major terrestrial biomes and aquatic communities.
The food web mostly talks about how energy from the sun moves from one organism to another. One way that shows how much energy the organism gets is the 10% rule. It decreases as energy transfers from organism to organism.One way that organisms survive is by having their phenotype useful for their environment. Their homeostasis can also help since its like their internal environment. Another way organisms survive is by what type of symbiosis they have with another organism. There are different type of relationship that can effect the organism through its environment.
Speaking of the organism's habitat, their biome can have a major effect on the organism too since they would have to survive in their environment. There are different types of biomes and aquatic communities that have diverse animals and organisms.
S7L5. Students will examine the the evolution of living organisms through inherited characteristics that promote survival of successive generations of their offspring.
A. Explain the physical characteristics of organisms have changed over successive generations.
B. Describe ways in which species on Earth have evolved due to natural selection.
C. Explain how fossil record found in sedimentary rock provides evidence for the long history of changing life forms.
Many things can help us think about how evolution was such as fossil evidence or natural selection throughout animals or land. Natural selection is when organisms naturally inherit the behaviors or methods they use for survival. Such as Darwin's finches that he noticed throughout the world and it wonders. He had noticed that these specific finches have different types of beaks.
As you can see, these finches have somewhat different beaks that they use to survive in their own environment.
Well that was mostly it about all these standards and hope they have helped you as well as they helped me. Thank you humans!
Well that was mostly it about all these standards and hope they have helped you as well as they helped me. Thank you humans!
