Homework Answers
Endocrine because
Endocrine Signaling
(In the body, many endocrine cells are located in endocrineglands, such as the thyroid gland, the hypothalamus, and the pituitary gland.) These types of signals usually produce a slowerresponse but have a longer-lasting effect.
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Relatively speaking, the slowest way to transmit a signal from one cell to another is by...
Help please! 1. Considering the following cellular signal systems: Endocrine, Paracrine, Autocrine, Cell-Cell contact and Synaptic,...
Help please!
1. Considering the following cellular signal systems: Endocrine, Paracrine, Autocrine, Cell-Cell contact and Synaptic, please respond: a. What characteristics do they have in common? Please, mention at least two b. How the signal is transported in each one? c. Please, represent with a simple drawing each one of the signaling types d. Which advantages (at least 2) has the synapsis signaling compared to the the endocrine one?
Thyroid gland releases a thyroxine to the blood stream. What type of cell signaling is induced...
Thyroid gland releases a thyroxine to the blood stream. What type of cell signaling is induced by this way? A) endocrine B) juxtacrine C) paracrine D) autocrine
8- Which of the following can be activated by an inhibitory neurotransmiter on the postsynagtie a....
8- Which of the following can be activated by an inhibitory neurotransmiter on the postsynagtie a. Ligand-gated Na·Channels. b. Voltage-gated Na channels c. Voltage-gated K' channels d. Voltage-gated CaChannels Ligand-gated CT channels. 9- Saltatory conduction occurs when a. Sodium ions levels are highest b. Gated-sodium channels open c. The resting potential fails to be reset d. There is no synapse and the axon is continuous with the next dendrite e. The action potential jumps from node to node on a...
1. Growth hormone is secreted from the pituitary, which is located at the base of the...
1. Growth hormone is secreted from the pituitary, which is located at the base of the brain, and acts through growth hormone receptors located in the liver. Is this an example of endocrine, paracrine, or autocrine signaling? How do you know? 2. Release of growth hormones is a tightly controlled process. Discuss how the cell regulates the release of secreted growth hormones
Wnt signaling is involved in patterning in many tissue types where cells at the edge of...
Wnt signaling is involved in patterning in many tissue types where cells at the edge of the tissue will produce wnt and as the wnt ligand diffuses across the tissue different cell types are specified depending on the concentration of wnt. You are examining such a patterned tissue and notice that cells that produce wnt are also receiving the wnt signal. This is an example of what type of secretion? Select one: a. Exocrine, allomone b. Neuroendocrine c. Neurocrine d....
Choose one out of paracrine signalling, endocrine signalling, autocrine signalling and direct signalling and describe briefly...
Choose one out of paracrine signalling, endocrine signalling, autocrine signalling and direct signalling and describe briefly the process by which this occurs. Pick a representative signal molecule from the pathway you have chosen and indicate its function, the type of cell in which it is made and the specific manner in which it acts as a signalling molecule, including the receptor that it binds to. (For example if you chose the endocrine signalling pathway you could consider looking at a...
45) A bacterium engulfed by a white blood cell through phagocytosis will be digested by en...
45) A bacterium engulfed by a white blood cell through phagocytosis will be digested by en mes contained in A) peroxisomes. B) lysosomes. C) Golgi vesicles D) vacuoles. E) secretory vesicles. 44) Which of the following factors would tend to increase membrane fluidity? A) a greater proportion of unsaturated phospholipids B) a greater proportion of saturated phospholipids C) a lower temperature D) a relatively high protein content in the membrane E a greater proportion of relatively large glycolipids compared with...
How is signaling from receptor tyrosine kinases terminated? GTP hydrolysis ATP hydrolysis receptor endocytosis Arrestins Pathway...
How is signaling from receptor tyrosine kinases terminated? GTP hydrolysis ATP hydrolysis receptor endocytosis Arrestins Pathway crosstalk occurs when: signaling pathways use a common intermediate o signaling pathways split to produce multiple outcomes one signaling pathway triggers another signaling pathways produce the same outcome Eicosanoid hormones such as prostaglandins and leukotrienes are responsible for localized immune reactions such as to insect bites and hayfever symptoms. Which of the following best describes this level of cell signaling? Autocrine Endocrine o Holoerine...
Hgs is a major target of the Ire1-dependent RNA decay pathway. Mutation of a particular stem-loop...
Hgs is a major target of the Ire1-dependent RNA decay pathway. Mutation of a particular stem-loop sequence in the Hgs mRNA abolishes its degradation during ER stress. What would you conclude from this result? the stem-loop is necessary and sufficient for degradation the stem-loop is sufficient for degradation the stem-loop is necessary but not sufficient for degradation the stem-loop is necessary for degradation Which of the following processes is most likely to be affected by lysosome localization/positioning in the cell?...
What structures are found in the cytoplasm, near the plasma membrane, at the axonal end of...
What structures are found in the cytoplasm, near the plasma membrane, at the axonal end of neuron: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors c) Secretory vesicles d) mitochondria e) nucleus What protein is found (evenly distributed) along the entire length of the cell's plasma membrane: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors c) Secretory vesicles d) nucleus e) mitochondria Proteins found exclusively at the dendritic end of the neuron: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors...
Help please!
1. Considering the following cellular signal systems: Endocrine, Paracrine, Autocrine, Cell-Cell contact and Synaptic, please respond: a. What characteristics do they have in common? Please, mention at least two b. How the signal is transported in each one? c. Please, represent with a simple drawing each one of the signaling types d. Which advantages (at least 2) has the synapsis signaling compared to the the endocrine one?
8- Which of the following can be activated by an inhibitory neurotransmiter on the postsynagtie a. Ligand-gated Na·Channels. b. Voltage-gated Na channels c. Voltage-gated K' channels d. Voltage-gated CaChannels Ligand-gated CT channels. 9- Saltatory conduction occurs when a. Sodium ions levels are highest b. Gated-sodium channels open c. The resting potential fails to be reset d. There is no synapse and the axon is continuous with the next dendrite e. The action potential jumps from node to node on a...
45) A bacterium engulfed by a white blood cell through phagocytosis will be digested by en mes contained in A) peroxisomes. B) lysosomes. C) Golgi vesicles D) vacuoles. E) secretory vesicles. 44) Which of the following factors would tend to increase membrane fluidity? A) a greater proportion of unsaturated phospholipids B) a greater proportion of saturated phospholipids C) a lower temperature D) a relatively high protein content in the membrane E a greater proportion of relatively large glycolipids compared with...
How is signaling from receptor tyrosine kinases terminated? GTP hydrolysis ATP hydrolysis receptor endocytosis Arrestins Pathway crosstalk occurs when: signaling pathways use a common intermediate o signaling pathways split to produce multiple outcomes one signaling pathway triggers another signaling pathways produce the same outcome Eicosanoid hormones such as prostaglandins and leukotrienes are responsible for localized immune reactions such as to insect bites and hayfever symptoms. Which of the following best describes this level of cell signaling? Autocrine Endocrine o Holoerine...
What structures are found in the cytoplasm, near the plasma membrane, at the axonal end of neuron: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors c) Secretory vesicles d) mitochondria e) nucleus What protein is found (evenly distributed) along the entire length of the cell's plasma membrane: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors c) Secretory vesicles d) nucleus e) mitochondria Proteins found exclusively at the dendritic end of the neuron: a) Voltage sensitive Na^+ channels b) Neurotransmitter Receptors...
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