{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Chapter 1 - 2 Energy conversion a Energy flows through an...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology Chapter 1 Biology : the scientific study of life : the science that focuses on life Biological organization : microscopic scale to large scale 1. Biosphere: all environments on earth that are inhabited by life (land, water, air) 2. Ecosystems: all living things in a particular area and non-living components (grasslands, deserts) 3. Communities: all organisms inhabiting a particular ecosystem (trees, plants, animals, fungi) 4. Population: all the individuals of a species living within a specified area (black bears) 5. Organisms: Individual living things (one tree frog) 6. Organs and Organ Systems: Digestive system-tongue, stomach, intestines 7. Tissues: Skin 8. Cells: Life’s fundamental unit of structure and function (muscle cell, neuroglial cell) 9. Organelles: various functional components of cells (lysosomes) 10. Molecules: chemical structure consisting of two or more small chemical units called atoms Ecosystems 1. Ecosystem dynamics a. Cycling of nutrients b. Flow of energy from sun to producer to consumer
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2. Energy conversion a. Energy flows through an ecosystem usually entering as light and exiting as heat b. Contrast with chemical nutrients which recycle within an ecosystem. Cells: The cell is the lowest level of organization that can perform all activities required for life. 1. The cell’s heritable information a. DNA is the substance of genes b. DNA replicates as a cell prepares to divide so that offspring inherit a complete set of genes. Biology Chapter 1 c. DNA directs the development and maintenance of the entire organism d. It is arranged in a double helix and made up of nucleotides. e. Most genes code for protein synthesis. f. Enzymes catalyze chemical reactions in a cell. g. Proteins build and maintain the cell h. The entire set of genetic instructions is known as the genome. i. Differing nucleotide sequences can produces more than 75000 kinds of proteins, each with a specific function. 2. Two main forms of cells a. Eukaryotic j. I....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern