• Cells were discovered in 1665 by Robert Hooke • Early studies of
... Bacterial Cell Walls • Most bacterial cells are encased by a strong cell wall – composed of peptidoglycan • carbohydrate polymers cross-linked with short peptides – different from cell walls of plants and fungi (cellulose) • Protect the cell, maintain its shape, and prevent excessive uptake or lo ...
... Bacterial Cell Walls • Most bacterial cells are encased by a strong cell wall – composed of peptidoglycan • carbohydrate polymers cross-linked with short peptides – different from cell walls of plants and fungi (cellulose) • Protect the cell, maintain its shape, and prevent excessive uptake or lo ...
AP Biology - gwbiology
... Facilitated diffusion occurs without the use of energy because it is spontaneous when materials travel down a concentration gradient. In active transport, the materials are shifted up a concentration gradient, requiring energy to push against the gradient. 14. Define and contrast the following terms ...
... Facilitated diffusion occurs without the use of energy because it is spontaneous when materials travel down a concentration gradient. In active transport, the materials are shifted up a concentration gradient, requiring energy to push against the gradient. 14. Define and contrast the following terms ...
Fungal Cells 02
... the cell. It contains chromosomes with DNA instructions for all the cell’s activities, and to make new cells ...
... the cell. It contains chromosomes with DNA instructions for all the cell’s activities, and to make new cells ...
Chapter 1 Study Guide
... 11. Which is the most abundant chemical found in living cells? _______________________ 12. A change in an organism's surroundings that causes it to react is called _______________. 13. A plant growing toward light is an example of _________________________________. 14. The mistaken idea that living ...
... 11. Which is the most abundant chemical found in living cells? _______________________ 12. A change in an organism's surroundings that causes it to react is called _______________. 13. A plant growing toward light is an example of _________________________________. 14. The mistaken idea that living ...
SLO TEST CELLS 2 - Gallion-Wiki
... c. bean shaped organelle that contains the cell’s energy d. organelle responsible for food production ...
... c. bean shaped organelle that contains the cell’s energy d. organelle responsible for food production ...
Document
... Transport, "intracellular highway". -Rough ER contains many ribosomes & is involved in protein synthesis -Smooth ER ribosomes not found on surface ...
... Transport, "intracellular highway". -Rough ER contains many ribosomes & is involved in protein synthesis -Smooth ER ribosomes not found on surface ...
Cell Lab Standard
... portion of the leaf where the cells are very distinct. Center this portion in the field of view and focus it under the high power. Use the fine adjustment knob to focus up and down on the various depths. As you turn up and down a new layer of cells will come into focus. Note how many layers of cells ...
... portion of the leaf where the cells are very distinct. Center this portion in the field of view and focus it under the high power. Use the fine adjustment knob to focus up and down on the various depths. As you turn up and down a new layer of cells will come into focus. Note how many layers of cells ...
cells - Piscataway High School
... Phosphate “heads” are attracted to water (hydrophilic). They are oriented to the OUTSIDE of the cell membrane bilayer. ...
... Phosphate “heads” are attracted to water (hydrophilic). They are oriented to the OUTSIDE of the cell membrane bilayer. ...
Cellular Transport and the Cell Cycle
... Cytokinesis: forming two daughter cells identical to the parent cell Animal cells: ...
... Cytokinesis: forming two daughter cells identical to the parent cell Animal cells: ...
Tissues
... types, and provide examples of where each occurs in the body. 2. Name the types of epithelium, and identify an organ in which each is found. 3. Distinguish different types of connective and muscular tissues. ...
... types, and provide examples of where each occurs in the body. 2. Name the types of epithelium, and identify an organ in which each is found. 3. Distinguish different types of connective and muscular tissues. ...
Cells - T.R. Robinson High School
... Prokaryotic cell structures and functions Cell wall – forms a protective outer layer that prevents damage from outside (made of peptidoglycan) Plasma membrane – controls entry and exit of substances, pumping some of them out in by active transport. Cytoplasm – contains enzymes that catalyze chemica ...
... Prokaryotic cell structures and functions Cell wall – forms a protective outer layer that prevents damage from outside (made of peptidoglycan) Plasma membrane – controls entry and exit of substances, pumping some of them out in by active transport. Cytoplasm – contains enzymes that catalyze chemica ...
reviewsheettest#3answers2013.cwk (WP)
... 2. cell wall - protects and provides support 3. nucleus - control center where DNA is stored 4. mitochondria - powerhouse of the cell. where energy is made 5. vacuoles - stores water and food 6. chloroplast contains chlorophyll which is involved in the process of photosynthesis 7. endoplasmic reticu ...
... 2. cell wall - protects and provides support 3. nucleus - control center where DNA is stored 4. mitochondria - powerhouse of the cell. where energy is made 5. vacuoles - stores water and food 6. chloroplast contains chlorophyll which is involved in the process of photosynthesis 7. endoplasmic reticu ...
Lesson Plan
... reality. Stress to students that this will be more of a “history” lesson and they will be learning about different scientists. You can talk about how these will be white males…there was discrimination even back then against non-whites and females. 3. Direct instruction: a. Hand out “cell theory stud ...
... reality. Stress to students that this will be more of a “history” lesson and they will be learning about different scientists. You can talk about how these will be white males…there was discrimination even back then against non-whites and females. 3. Direct instruction: a. Hand out “cell theory stud ...
Document
... _____ 19. Larger size, longer life, and specialization are three advantages to being a a. eukaryote. b. prokaryote. c. unicellular organism. d. multicellular organism. _____ 20. Which of the following is true of each of the four levels of organization of living things? a. Each contains larger cells ...
... _____ 19. Larger size, longer life, and specialization are three advantages to being a a. eukaryote. b. prokaryote. c. unicellular organism. d. multicellular organism. _____ 20. Which of the following is true of each of the four levels of organization of living things? a. Each contains larger cells ...
Unit 1: The Cell Review
... a. stores DNA b. controls most of the cell’s processes c. contains the information needed to make proteins d. all of the above Which of the following is an organelle found in the cytoplasm? a. nucleolus c. chromatin b. ribosome d. cell wall Which organelle would you expect to find in plant cells? a. ...
... a. stores DNA b. controls most of the cell’s processes c. contains the information needed to make proteins d. all of the above Which of the following is an organelle found in the cytoplasm? a. nucleolus c. chromatin b. ribosome d. cell wall Which organelle would you expect to find in plant cells? a. ...
HOMEWORK: REVIEW CELL LIFE CYCLE AND MITOSIS
... 5) During each of the phases of cell division, we are able to see individual chromosomes. However, we are not able to see individual chromosomes during interphase. Why is this? ...
... 5) During each of the phases of cell division, we are able to see individual chromosomes. However, we are not able to see individual chromosomes during interphase. Why is this? ...
Document
... We are multicellular creatures—made up of many cells What makes one of our cells different from a microbial cell?? A single microbial cell can have an independent existence—our specialized cells need to interact with other cells in order to carry out their cellular functions for the good of the enti ...
... We are multicellular creatures—made up of many cells What makes one of our cells different from a microbial cell?? A single microbial cell can have an independent existence—our specialized cells need to interact with other cells in order to carry out their cellular functions for the good of the enti ...
Extracellular matrix
In biology, the extracellular matrix (ECM) is a collection of extracellular molecules secreted by cells that provides structural and biochemical support to the surrounding cells. Because multicellularity evolved independently in different multicellular lineages, the composition of ECM varies between multicellular structures; however, cell adhesion, cell-to-cell communication and differentiation are common functions of the ECM.The animal extracellular matrix includes the interstitial matrix and the basement membrane. Interstitial matrix is present between various animal cells (i.e., in the intercellular spaces). Gels of polysaccharides and fibrous proteins fill the interstitial space and act as a compression buffer against the stress placed on the ECM. Basement membranes are sheet-like depositions of ECM on which various epithelial cells rest.The plant ECM includes cell wall components, like cellulose, in addition to more complex signaling molecules. Some single-celled organisms adopt multicelluar biofilms in which the cells are embedded in an ECM composed primarily of extracellular polymeric substances (EPS).