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Talja [164]
3 years ago
5

Three different groups of bees were allowed to exit their hive and collect pollen at different times of day. At the end of a mon

th, the amount of honey produced is measured.
What is the dependent variable in this investigation?
Biology
1 answer:
babunello [35]3 years ago
8 0
The groups of bees. i believe that bc it depends on what group gathers more yk?
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Btx depolarizes the membrane and prevents repolarization. what effect would this have on electrical signaling by the nervous sys
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BTX or batrachotoxin is a type of steroidal alkaloid which was first derived from the skin of Dendrobatidae or poison dart frogs. This neurotoxin prevents the muscle and nerve cells from transmitting electrical signals. The toxin permanently blocks electrical signal transmission from the nerves to the muscle by binding and inactivating the sodium channels.  
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what would you be most likely to measure by immersing an object in water and seeing how much the water level rises?
Rina8888 [55]
<span>The volume of an irregular solid object would be measured in such a way. It is actually how the story of Archimedes goes when he managed to measure whether or not there's the right amount of gold in a king's crown using the same method.</span>
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3 years ago
What struggles do aquatic organisms have that terrestrial ones do not?
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Aquatic animals can be found in water habitats, which can be either fresh or marine. Terrestrial animals can be found exclusively in the land. Aquatic animals respire through gills or their skin. ... The main difference between aquatic and terrestrial animals is their habitat and modes of living

Explanation:

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Receptors trigger one of two effector pathways resulting in changes in neuronal activity. These changes will, ultimately, effect
kolezko [41]

Complete question:

Receptors trigger one of two effector pathways resulting in changes in neuronal activity. These changes will, ultimately, effect gene expression. Which effector pathway is characterized by ion flux through transmitter-activated channels resulting in an altered membrane potential and neuronal activity?

A.  Slow effector pathways

B.  Modulated effector pathways

C.  Rapid effector pathways

D.  NMDA glutamate receptor pathways

Answer:

D.  NMDA glutamate receptor pathways

Explanation:

The NMDA glutamatergic receptor is a cationic channel receptor modulated by a ligand that allows the transport of Na+, K+, and Ca2+. Under certain situations, it exhibits particular permeability to Ca2+. The receptor has different regions that are susceptible to modulation by endogenous and exogenous agents. The receptor can be found at most excitatory synapses, where it responds to the neurotransmitter glutamate. During synapsis, the presynaptic membrane releases L-glutamate, which is received by NMDA glutamatergic receptor. The receptor plays a regulatory role because activates signaling cascades that depend on calcium.

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3 0
3 years ago
it is often useful for scientists to study a population of cells that are all at the same stage of the cell cycle. for example,
inn [45]

It is often useful for scientists to study a population of cells that are all at the same stage of the cell cycle.

<h3>Why the discovery of cyclins and cdks was enabled?</h3>

The discovery of cyclins and cdks was enabled by studying frog eggs that divided synchronously after fertilization; extracts from the embryos were thus representative of the cell-cycle stage at which the extract was made.

Researchers have devised means to synchronize asynchronous populations of cultured cells. for example, serum starvation deprives cells of mitogens and blocks cells in the g0/g1 phase of the cell cycle.

Therefore, It is often useful for scientists to study a population of cells that are all at the same stage of the cell cycle.

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brainly.com/question/15876101

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7 0
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