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Forage Values of Range Plants
Forage Values of Range Plants

... higher levels of cell contents (cell solubles) and are therefore more nutritious than leaves or stems. • Seeds can also contain ...
Minireview - Biologie am KIT
Minireview - Biologie am KIT

... Other Pieces of the Puzzle The asymmetric division of the zygote coincides with the establishment of apical and basal polarity in the plant embryo, a process that depends on the polar transport of the plant growth hormone auxin. This transport is mediated by the PIN proteins, which are auxin efflux ...
Biology Discussion Points
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... water through a pore in the cytoplasm which can be opened and closed. Other protists, such as Amoeba, have contractile vacuoles that move to the surface of the cell when full and undergo exocytosis. In amoeba contractile vacuoles collect excretory waste, such as ammonia, from the intracellular fluid ...
Biology 202 Lecture Notes
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... Hypothalamus and Pituitary gland See figure 15.6  The hypothalamus is connected to the pituitary gland by the infundibulum.  Hypothalamic neurons go directly to the posterior pituitary (neurohypophysis) and release oxytocin and ADH (antidiuretic hormone or vasopressin)  Releasing and inhibiting h ...
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... A Signal Molecule Binds to a Receptor Protein Causing the Protein to Change Shape • A cell targeted by a particular chemical signal has a receptor protein that recognizes the signal molecule. – Recognition occurs when the signal binds to a specific site on the receptor because it is complementary i ...
MINI- REVIEW - Microbiology
MINI- REVIEW - Microbiology

... possible factors (see sections below) that might determine non-genetic resistance of a fraction of cells to a short-term stress, none, with the possible exception of epigenetic regulation, are sustainable through the multiple rounds of cell division and physiological changes associated with growth. ...
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cell: the basic unit of structure in living things

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... for the function of different R genes. Loss of EDS1 function suppresses signals generated by TIR-NB-LRR R proteins, whereas ndr1 mutants are compromised in resistance conditioned by CC-NB-LRR R proteins (Aarts et al., 1998). In contrast to the well-documented signaling pathways associated with HR in ...
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Cell polarity - Philosophical Transactions of the Royal Society B

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Plants Cells

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CHAPTER 7: CELL STRUCTURE AND FUNCTION

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Cell Mechanics

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Mitosis Meiosis Study Guide

... from ATP to specific stretches of amino acids in the substrates. Different types of eukaryotic cells contain different types and numbers of CDKs. For example, yeast have only a single CDK, whereas vertebrates have four different ones. As their name suggests, CDKs require the presence of cyclins to b ...
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Programmed cell death



Programmed cell-death (or PCD) is death of a cell in any form, mediated by an intracellular program. PCD is carried out in a regulated process, which usually confers advantage during an organism's life-cycle. For example, the differentiation of fingers and toes in a developing human embryo occurs because cells between the fingers apoptose; the result is that the digits are separate. PCD serves fundamental functions during both plant and metazoa (multicellular animals) tissue development.Apoptosis and autophagy are both forms of programmed cell death, but necrosis is a non-physiological process that occurs as a result of infection or injury.Necrosis is the death of a cell caused by external factors such as trauma or infection and occurs in several different forms. Recently a form of programmed necrosis, called necroptosis, has been recognized as an alternate form of programmed cell death. It is hypothesized that necroptosis can serve as a cell-death backup to apoptosis when the apoptosis signaling is blocked by endogenous or exogenous factors such as viruses or mutations.
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