Biology Assessment Examples
... A student observes a typical onion root tip where many of the cells have just successfully completed mitosis. Which statement best explains what must have happened to result in cells that only have half as many chromosomes as all of the other cells in the same section of the tip? a. The parent cell ...
... A student observes a typical onion root tip where many of the cells have just successfully completed mitosis. Which statement best explains what must have happened to result in cells that only have half as many chromosomes as all of the other cells in the same section of the tip? a. The parent cell ...
(4-HC) and Glutathione (GSH)
... COV434 human granulosa cell line, we tested the following hypotheses: 1) 4-HC, a preactivated form of cyclophosphamide, induces apoptosis; 2) GSH depletion induces apoptosis; and 3) GSH depletion enhances the apoptotic effects of 4-HC. Cells treated with 100 µM buthionine sulfoximine (BSO), a specif ...
... COV434 human granulosa cell line, we tested the following hypotheses: 1) 4-HC, a preactivated form of cyclophosphamide, induces apoptosis; 2) GSH depletion induces apoptosis; and 3) GSH depletion enhances the apoptotic effects of 4-HC. Cells treated with 100 µM buthionine sulfoximine (BSO), a specif ...
Unit 1 Notes
... Bacteria keep their genetic information in a structure called a nucleoid, which is a large ring of DNA. In addition, they also have extra genetic information in a small ring of DNA called a plasmid. ...
... Bacteria keep their genetic information in a structure called a nucleoid, which is a large ring of DNA. In addition, they also have extra genetic information in a small ring of DNA called a plasmid. ...
Active Transport Quiz
... d) Active transport is called "active" because it involves an active channel protein. 8. Your nerve cells pump sodium ions from the extracellular space into the cell. How do the sodium ions get back out of the cell? a) by active transport b) by simple diffusion c) by facilitated diffusion d) all of ...
... d) Active transport is called "active" because it involves an active channel protein. 8. Your nerve cells pump sodium ions from the extracellular space into the cell. How do the sodium ions get back out of the cell? a) by active transport b) by simple diffusion c) by facilitated diffusion d) all of ...
A Clinically Relevant in vivo Zebrafish Model of
... All MM cell lines utilized and their culture conditions have been previously described6. Primary plasma cells from MM patients were obtained after informed consent and isolated as described previously7. The CM-DIL labeled MM cell lines and primary CD138+ MM cells were washed in PBS, re-suspended in ...
... All MM cell lines utilized and their culture conditions have been previously described6. Primary plasma cells from MM patients were obtained after informed consent and isolated as described previously7. The CM-DIL labeled MM cell lines and primary CD138+ MM cells were washed in PBS, re-suspended in ...
Through the microscope - NSW Department of Education
... called the nucleus and it acts as the control centre of the cell. It directs the growth of the cell and the activities that go on inside the cell. You cannot always see the nucleus, but every cell must have one. That is, all cells except red blood cells. This is another way that red blood cells are ...
... called the nucleus and it acts as the control centre of the cell. It directs the growth of the cell and the activities that go on inside the cell. You cannot always see the nucleus, but every cell must have one. That is, all cells except red blood cells. This is another way that red blood cells are ...
Datasheet
... or tissue samples to a proper precooling glass homogenizer, homogenize about 30-50 passes. However, efficient homogenization may depend on the cell and tissue type, so the optimal condition should be determined by the end user. To check the efficiency of homogenization, pipette 2-3 μl of the homogen ...
... or tissue samples to a proper precooling glass homogenizer, homogenize about 30-50 passes. However, efficient homogenization may depend on the cell and tissue type, so the optimal condition should be determined by the end user. To check the efficiency of homogenization, pipette 2-3 μl of the homogen ...
Cyclin Dependent Kinases and Cell Cycle Control
... a genome of less than 5000 genes (Wood et al. 2002). Murdoch used fission yeast to study how cells grow during the cell cycle, devising procedures for physiological analysis and to synchronize cells so they proceeded together through the cycle. Another approach to studying the cell cycle in yeasts w ...
... a genome of less than 5000 genes (Wood et al. 2002). Murdoch used fission yeast to study how cells grow during the cell cycle, devising procedures for physiological analysis and to synchronize cells so they proceeded together through the cycle. Another approach to studying the cell cycle in yeasts w ...
Decomposition
... • Decomposition or rotting is the process by which tissues of a dead organism break down into simpler forms of matter. The process is essential for new growth and development of living organisms because it recycles the finite matter that occupies physical space in the biome. • Bodies of living organ ...
... • Decomposition or rotting is the process by which tissues of a dead organism break down into simpler forms of matter. The process is essential for new growth and development of living organisms because it recycles the finite matter that occupies physical space in the biome. • Bodies of living organ ...
Diffusion and Osmosis
... to another solution. Note that these terms are comparisons; they require a point of reference, as shown in figure 4.3. For example, you may be taller than your coach or taller than you were two years ago, but you are never just taller. Likewise, a solution may be described as isotonic only in compar ...
... to another solution. Note that these terms are comparisons; they require a point of reference, as shown in figure 4.3. For example, you may be taller than your coach or taller than you were two years ago, but you are never just taller. Likewise, a solution may be described as isotonic only in compar ...
Leukemia - myeFolio
... CANCER Genetic disease with uncontrollable abnormal cell division. Anywhere in the human body Metastasis ...
... CANCER Genetic disease with uncontrollable abnormal cell division. Anywhere in the human body Metastasis ...
The centrosome orientation checkpoint is germline stem cell specific
... Proliferating cells are known to react to the lack of a bipolar spindle by arresting in mitosis due to activation of the SAC (Musacchio and Salmon, 2007). Accordingly, in a population of non-synchronized proliferating cells, cells accumulate in mitosis over time in the presence of colcemid, an MT-de ...
... Proliferating cells are known to react to the lack of a bipolar spindle by arresting in mitosis due to activation of the SAC (Musacchio and Salmon, 2007). Accordingly, in a population of non-synchronized proliferating cells, cells accumulate in mitosis over time in the presence of colcemid, an MT-de ...
Supplementary Figure Legends
... cells induced into senescence by incubation with 20 nM 4-HT for 3 days (right panel). Cells were stained for SA-ß-gal as described (Debacq-Chainiaux et al., 2009), and then with DAPI to visualize nuclear DNA with a fluorescence microscope. The product produced by SA-ß-gal cleavage of the 5-bromo-4-c ...
... cells induced into senescence by incubation with 20 nM 4-HT for 3 days (right panel). Cells were stained for SA-ß-gal as described (Debacq-Chainiaux et al., 2009), and then with DAPI to visualize nuclear DNA with a fluorescence microscope. The product produced by SA-ß-gal cleavage of the 5-bromo-4-c ...
Bacterial growth
... Bacterial growth The term "bacterial growth" generally refers to growth of a population of bacteria, rather than of an individual cell. Individual cells usually reproduce asexually by means of binary fission, in which one cell divides into two cells. Thus, bacterial growth of the population is a geo ...
... Bacterial growth The term "bacterial growth" generally refers to growth of a population of bacteria, rather than of an individual cell. Individual cells usually reproduce asexually by means of binary fission, in which one cell divides into two cells. Thus, bacterial growth of the population is a geo ...
Lecture 9
... The Golgi apparatus (GA), also called Golgi body or Golgi complex and found universally in both plant and animal cells Is typically comprised of a series of five to eight cup-shaped, membrane-covered sacs called cisternae that look something like a stack of deflated balloons. In some unicellular fla ...
... The Golgi apparatus (GA), also called Golgi body or Golgi complex and found universally in both plant and animal cells Is typically comprised of a series of five to eight cup-shaped, membrane-covered sacs called cisternae that look something like a stack of deflated balloons. In some unicellular fla ...
HiPer® Bacterial Growth Curve Teaching Kit
... Interpretation: By performing this experiment, the different stages of bacterial growth curve can be observed. In the lag phase the OD remains constant. With time the cells enter the log phase where the OD increases until the cells reach the stationary phase, where the OD remains more or less consta ...
... Interpretation: By performing this experiment, the different stages of bacterial growth curve can be observed. In the lag phase the OD remains constant. With time the cells enter the log phase where the OD increases until the cells reach the stationary phase, where the OD remains more or less consta ...
Remember what qualifies as *alive*?
... • When can I retest? ▫ As soon as the test autopsy has been completed. ▫ Turn in with your test autopsy. ▫ Earn up to an 80% with a score of 100% on the retest. ...
... • When can I retest? ▫ As soon as the test autopsy has been completed. ▫ Turn in with your test autopsy. ▫ Earn up to an 80% with a score of 100% on the retest. ...
Prokaryotic Cell Architecture(bacteria) Structurally, a bacterial cell
... including the rotation of the flagellum, or active transport as described above. The pmf can also be used to make ATP by the membrane ATPase enzyme which consumes protons when it synthesizes ATP from ADP and phosphate. The connection between electron transport, establishment of pmf, and ATP synthesi ...
... including the rotation of the flagellum, or active transport as described above. The pmf can also be used to make ATP by the membrane ATPase enzyme which consumes protons when it synthesizes ATP from ADP and phosphate. The connection between electron transport, establishment of pmf, and ATP synthesi ...
Introduction - Evergreen State College Archives
... The phospholipids organize themselves into a bilayer with the hydrophilic regions facing either the outside of the cell or the interior cytoplasmic face. The hydrophobic, hydrocarbon-rich regions of each layer face each other and face away from the watery internal or external environment, an arrange ...
... The phospholipids organize themselves into a bilayer with the hydrophilic regions facing either the outside of the cell or the interior cytoplasmic face. The hydrophobic, hydrocarbon-rich regions of each layer face each other and face away from the watery internal or external environment, an arrange ...
Team Publications
... mammals. Mammals appear to have developed rather diverse strategies to initiate XCI in early development. In placental mammals XCI depends on the regulatory noncoding RNA Xinactive specific transcript (Xist), which is absent in marsupials and monotremes. Surprisingly, even placental mammals show diffe ...
... mammals. Mammals appear to have developed rather diverse strategies to initiate XCI in early development. In placental mammals XCI depends on the regulatory noncoding RNA Xinactive specific transcript (Xist), which is absent in marsupials and monotremes. Surprisingly, even placental mammals show diffe ...
Chapter 5: Membranes
... Osmosis is the diffusion of water across membranes • Water diffusion across membranes, or osmosis, is a special case. • Osmosis is a completely passive process and requires no metabolic energy. • If a plant cell is placed in a solution with a high concentration of sucrose (table sugar), the plant ce ...
... Osmosis is the diffusion of water across membranes • Water diffusion across membranes, or osmosis, is a special case. • Osmosis is a completely passive process and requires no metabolic energy. • If a plant cell is placed in a solution with a high concentration of sucrose (table sugar), the plant ce ...
Effects of deuterium oxide on cell growth and vesicle speed
... α/β tubulin heterodimers and undergo alternating phases of growth and shrinkage with sudden transitions between the two (Bartolini et al., 2005). Microtubules are responsible for a wide variety of vital cellular functions such as the formation of a bipolar spindle at mitosis. (Mitosis is the process ...
... α/β tubulin heterodimers and undergo alternating phases of growth and shrinkage with sudden transitions between the two (Bartolini et al., 2005). Microtubules are responsible for a wide variety of vital cellular functions such as the formation of a bipolar spindle at mitosis. (Mitosis is the process ...
Lesson Overview
... Every living cell exists in a liquid environment. One of the most important functions of the cell membrane is to keep the cell’s internal conditions relatively constant. It does this by regulating the movement of molecules from one side of the membrane to the other side. ...
... Every living cell exists in a liquid environment. One of the most important functions of the cell membrane is to keep the cell’s internal conditions relatively constant. It does this by regulating the movement of molecules from one side of the membrane to the other side. ...
Mitosis
Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. In general, mitosis (division of the nucleus) is often followed by cytokinesis, which divides the cytoplasm, organelles and cell membrane into two new cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.The process of mitosis is divided into stages corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase, and telophase. During mitosis, the chromosomes, which have already duplicated, condense and attach to fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei. The cell may then divide by cytokinesis to produce two daughter cells. Producing three or more daughter cells instead of normal two is a mitotic error called tripolar mitosis or multipolar mitosis (direct cell triplication / multiplication). Other errors during mitosis can induce apoptosis (programmed cell death) or cause mutations. Certain types of cancer can arise from such mutations.Mitosis occurs only in eukaryotic cells and the process varies in different organisms. For example, animals undergo an ""open"" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while fungi undergo a ""closed"" mitosis, where chromosomes divide within an intact cell nucleus. Furthermore, most animal cells undergo a shape change, known as mitotic cell rounding, to adopt a near spherical morphology at the start of mitosis. Prokaryotic cells, which lack a nucleus, divide by a different process called binary fission.