AS Biology - Unit 1 - Cellular Organisation - Chapter 4
Help!
|
|
|
||||||
|---|---|---|---|---|---|---|---|---|
| The modern theory of cellular organisation states that: | 1. ALL living organisms are composed of cells., 2. all new cells are derived from other cells, 3. Cells contain the heredirary material of an organism which is passed form parent to daugher cells. | 4. all metabolic processes take place within cells=>all cells are self-contained (self-sufficient units)
🗑
|
||||||
| Metabolic | Of or pertaining to metamorphosis; pertaining to, or involving, change. | (blank)
🗑
|
||||||
| Cytology | the study of cells | (blank)
🗑
|
||||||
| Prokaryotic Cells | Any cellular organism that lacks a distinct nucleus.ie. bacterias | ->no chromosomes (circular strand of DNA)-> no chloroplast (->photosynthesis)->no mitosis/meiosis
🗑
|
||||||
| Eukaryotic Cells | ->Organism whose cells have chromosomes with nucleosomal structure and separated from the cytoplasm by a two membrance nuclear envelope and compartmentalisation of a function in distinct cytoplasmic organelles. | ->contains a clearly defined nucleus enclosed by a membrane, along with organelles (small, self-contained, cellular parts that perform specific functions).
🗑
|
||||||
| The presence of membrane-bound organelles confers 4 advantages: | (Eukaryotic cells):->1. | (blank)
🗑
|
||||||
| Organelles include: | mitochondria, chloroplasts, a Golgi apparatus, an endoplasmic reticulum, and lysosomes. All organisms except bacteria are eukaryotes; bacteria are prokaryotes | (blank)
🗑
|
||||||
| Cytoplasm | exist inside a cell->jelly-like->contains enzymes and other soluble material. | (blank)
🗑
|
||||||
| Cytoplasmic matrix | contain all cell organelles->also called hyaloplasm or cytosol. | (blank)
🗑
|
||||||
| Definition Cells | All living organisms are composed of basic units called cells. | (blank)
🗑
|
||||||
| Unicellular | those organisms consisting of a single cell in which all the characeristic activities take place | (blank)
🗑
|
||||||
| Multicellular | organisms consisting of many cells | (blank)
🗑
|
||||||
| Tissues | Cells performing similar fundtions are organised into tissues | and the tissues contribute to the structure of the body organs.
🗑
|
||||||
| Phloem | Vascular tissues specialised for the transport of the products of photosynthesis | Tissue forming part of the plant vascular system, responsible for the transport of organic materials
🗑
|
||||||
| Xylem | Vascular tissues through which water and mineral ions are transported. | Plant tissue in vascular plants that carries water and nutrients up from the roots to the shoot and leaves->Also provides structural support for the plant, especially in wood.
🗑
|
||||||
| Active Transport | Some solutes have a higher concentration inside the cell than outside so they have to cross the membrane against the concentration gradient. ->which isn't possible with passive transport (simple- or facilitated diffusion)->AT requires energy->and carrier | carriers have binding sites which pick up specific molecules. They function in one direction only and require energy to change shape and move the solute.
🗑
|
||||||
| Vesicles | to transport large amnt of materials neither diffusion nor active transport work.->Instead cells have to make micro-containers from plasma membrane itself->these sac like structures are called vesicles. | Cells can use vesicles to transport solids or liquids across plasma membrane either into or out of the cell.
🗑
|
||||||
| Cytosis | the process of vesicle formation and their subsequent movement is known as.. | (blank)
🗑
|
||||||
| Endocytosis | is the process of importing material in vesicles | allows large amounts of substances to enter. Both these processes involve the formation of vesicles.
🗑
|
||||||
| Exocytosis | is the process of exporting materials in vesicles. | Exocytosis allows large amounts of substances to leave a cell->processes involve the formation of vesicles.
🗑
|
||||||
| *Explain why the cell membrane is describes as having a fluid mosaic structure. | 1. because the membrane is fluid, and the mosaic arrangement of the protein molecules. | (blank)
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
1sabelle