Metabolism part 1
... made by the cell and excreted outside of the cell. The exoenzym is then used to break down large molecules outside of cell into molecules small enough to be transported across the cell membrane. ...
... made by the cell and excreted outside of the cell. The exoenzym is then used to break down large molecules outside of cell into molecules small enough to be transported across the cell membrane. ...
Controlling Gene Expression
... If there is no lactose present, lac operon genes are not transcribed or translated. Lactose is an effector/inducer; if it is present, it induces the removal of the repressor and allows the lac genes to be transcribed and translated. (switch is on if there is lactose in the system) ...
... If there is no lactose present, lac operon genes are not transcribed or translated. Lactose is an effector/inducer; if it is present, it induces the removal of the repressor and allows the lac genes to be transcribed and translated. (switch is on if there is lactose in the system) ...
a. What kind of cell – diploid or haploid – are the body
... Through what process do these body cells reproduce as the animal grows? Mitosis b. What is the animal’s diploid number? 40 What is the animal’s haploid number? 20 c. How many chromosomes do the sex cells of the insect contain? 20 Are these cells haploid or diploid? Haploid d. Through what process ar ...
... Through what process do these body cells reproduce as the animal grows? Mitosis b. What is the animal’s diploid number? 40 What is the animal’s haploid number? 20 c. How many chromosomes do the sex cells of the insect contain? 20 Are these cells haploid or diploid? Haploid d. Through what process ar ...
Chapter 3 Quiz 2
... e. synthesis of steroid hormones 10. During protein synthesis, amino acids are carried to the forming chain by a. messenger RNA. b. DNA. c. ribosomal RNA. d. transfer RNA. 11. The nuclear envelope disassembles during a. prophase. b. anaphase. c. metaphase. d. telophase. e. interphase. ...
... e. synthesis of steroid hormones 10. During protein synthesis, amino acids are carried to the forming chain by a. messenger RNA. b. DNA. c. ribosomal RNA. d. transfer RNA. 11. The nuclear envelope disassembles during a. prophase. b. anaphase. c. metaphase. d. telophase. e. interphase. ...
cell organelle poster project
... 1. Draw, label, and color a cell type of your choice: plant or animal, on white unlined paper. Labels may be printed with a computer and attached. Use a key or legend to identify the organelles on the cell drawing. 2. Include the following cell organelles and their numbers in your drawing: 1. Cell ...
... 1. Draw, label, and color a cell type of your choice: plant or animal, on white unlined paper. Labels may be printed with a computer and attached. Use a key or legend to identify the organelles on the cell drawing. 2. Include the following cell organelles and their numbers in your drawing: 1. Cell ...
The Cell Cycle
... These structures, which contain DNA and become darkly colored when stained, are called chromosomes. Chromosomes are the carriers of the genetic material that is copied and passed from generation to generation of cells. Accurate transmission of chromosomes during cell division is critical. ...
... These structures, which contain DNA and become darkly colored when stained, are called chromosomes. Chromosomes are the carriers of the genetic material that is copied and passed from generation to generation of cells. Accurate transmission of chromosomes during cell division is critical. ...
Two Types of Cells Prokaryotic vs Eukaryotic Cells Prokaryotic Cells
... The first cells to appear on Earth were prokaryotic cells. A prokaryote is an organism made of a single prokaryotic cell. The earliest prokaryotes may have arisen more than 2.5 billion years ago. Bacteria are prokaryotes. They are very small cells with a simple structure. Prokaryotes do not have a n ...
... The first cells to appear on Earth were prokaryotic cells. A prokaryote is an organism made of a single prokaryotic cell. The earliest prokaryotes may have arisen more than 2.5 billion years ago. Bacteria are prokaryotes. They are very small cells with a simple structure. Prokaryotes do not have a n ...
structure Taxonomy
... membrane (vs absent membrane) 2. Eukaryotic size X10 of prokaryotic cells 3. Absence of cell wall in animals (vs present) 4. Presence of complex membrane structures/ organelle (ER, Golgi, mitochondria, plastids); (vs absent; contain only cytoplasmic particles as ribosomes/ polyribosomes and stored g ...
... membrane (vs absent membrane) 2. Eukaryotic size X10 of prokaryotic cells 3. Absence of cell wall in animals (vs present) 4. Presence of complex membrane structures/ organelle (ER, Golgi, mitochondria, plastids); (vs absent; contain only cytoplasmic particles as ribosomes/ polyribosomes and stored g ...
Cell Ultra structure and measurement
... Every living thing is made up of cells, these are the smallest basic unit of all living organisms, from simple single celled organisms like bacteria and Amoeba; to complex, multicellular organisms like us. Our bodies are made up of around 50 million million cells! Animation or still pictures of diff ...
... Every living thing is made up of cells, these are the smallest basic unit of all living organisms, from simple single celled organisms like bacteria and Amoeba; to complex, multicellular organisms like us. Our bodies are made up of around 50 million million cells! Animation or still pictures of diff ...
Types of Hormones
... cell membrane and 2. Bind to receptor proteins in the cytoplasm or inside the nucleus of the target cells; 3. Together, they form a “hormone-receptor complex” 4. which serves as a transcription factor, promoting or inhibiting 5. transcription and 6. translation of genes. ...
... cell membrane and 2. Bind to receptor proteins in the cytoplasm or inside the nucleus of the target cells; 3. Together, they form a “hormone-receptor complex” 4. which serves as a transcription factor, promoting or inhibiting 5. transcription and 6. translation of genes. ...
Mitosis PowerPoint
... Description of Stage The final phase of mitosis. Two distinct daughter cells are formed and the cells begin to separate. This stage is indicated by the formation of a cell plate in plant cells and a ...
... Description of Stage The final phase of mitosis. Two distinct daughter cells are formed and the cells begin to separate. This stage is indicated by the formation of a cell plate in plant cells and a ...
Figure 5.1 Rapid Diffusion of Membrane Proteins The fluid mosaic
... The fluid mosaic model of cell membranes, described by Singer and Nicolson (1972), was critical to understanding biological membranes as proteins floating in a phospholipid matrix. Integral to this model was earlier work by Frye and Edidin (1970). These researchers examined the movement of proteins ...
... The fluid mosaic model of cell membranes, described by Singer and Nicolson (1972), was critical to understanding biological membranes as proteins floating in a phospholipid matrix. Integral to this model was earlier work by Frye and Edidin (1970). These researchers examined the movement of proteins ...
Postcourse survey MCQ8-3-09X
... activity. b. Intracellular support systems resemble a map of crisscrossing roads similar to a road map. c. Potassium (K) regulates intracellular activity by changing the voltage across membranes d. Inactivation of DNA binding proteins is necessary for transcription. 11. Which item is common to all d ...
... activity. b. Intracellular support systems resemble a map of crisscrossing roads similar to a road map. c. Potassium (K) regulates intracellular activity by changing the voltage across membranes d. Inactivation of DNA binding proteins is necessary for transcription. 11. Which item is common to all d ...
Amoeba, Paramecium, Euglena, and Volvox
... Moves by stretching its cytoplasm into finger like extensions or pseudopodia ...
... Moves by stretching its cytoplasm into finger like extensions or pseudopodia ...
Eukaryotic Cells & Organelles
... Scientist believe that mitochondria and chloroplast began as proK and were eaten by larger cells. Evidence that supports this theory: They are about the same size as bacteria They are surrounded by two membranes ...
... Scientist believe that mitochondria and chloroplast began as proK and were eaten by larger cells. Evidence that supports this theory: They are about the same size as bacteria They are surrounded by two membranes ...
“Life is like a box of chocolates: you never know what you are going
... the surprises that come in both life and chocolates, the two do not have much in common. This comparison of similarity between two normally non-similar things is called an analogy. Analogies are helpful in understanding new topics, and they also show a high level of understanding when compared to an ...
... the surprises that come in both life and chocolates, the two do not have much in common. This comparison of similarity between two normally non-similar things is called an analogy. Analogies are helpful in understanding new topics, and they also show a high level of understanding when compared to an ...
The Cell Theory and Membrane Transport
... •HYPERTONIC means “above strength” •H2O rushes OUT of cell causing it to shrivel •Can result in PLASMOLYSIS in plants which causes wilting ...
... •HYPERTONIC means “above strength” •H2O rushes OUT of cell causing it to shrivel •Can result in PLASMOLYSIS in plants which causes wilting ...
Since cells are the building blocks of life, understanding the different
... image of the cell in middle of page. Now select the animal option located under the image. Notice that as you move the cursor around the cell, the different organelles of the cell are highlighted. By clicking on the organelle you will be directed to an information page regarding that organelle. Expl ...
... image of the cell in middle of page. Now select the animal option located under the image. Notice that as you move the cursor around the cell, the different organelles of the cell are highlighted. By clicking on the organelle you will be directed to an information page regarding that organelle. Expl ...
Cell nucleus
In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many.Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes. The genes within these chromosomes are the cell's nuclear genome. The function of the nucleus is to maintain the integrity of these genes and to control the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell. The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm, and the nucleoskeleton (which includes nuclear lamina), a network within the nucleus that adds mechanical support, much like the cytoskeleton, which supports the cell as a whole.Because the nuclear membrane is impermeable to large molecules, nuclear pores are required that regulate nuclear transport of molecules across the envelope. The pores cross both nuclear membranes, providing a channel through which larger molecules must be actively transported by carrier proteins while allowing free movement of small molecules and ions. Movement of large molecules such as proteins and RNA through the pores is required for both gene expression and the maintenance of chromosomes. The interior of the nucleus does not contain any membrane-bound sub compartments, its contents are not uniform, and a number of sub-nuclear bodies exist, made up of unique proteins, RNA molecules, and particular parts of the chromosomes. The best-known of these is the nucleolus, which is mainly involved in the assembly of ribosomes. After being produced in the nucleolus, ribosomes are exported to the cytoplasm where they translate mRNA.