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kaheart [24]
3 years ago
13

A system of goverment

Biology
2 answers:
vladimir2022 [97]3 years ago
6 0

Answer:

3 types of systems

Explanation:

- unitary

-federal

-confederate

shtirl [24]3 years ago
5 0
The three main systems of government used today are unitary systems, federal systems, and confederate systems
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17. Which of the following statements are accurate?
Naddik [55]

Answer:

A. Neurotransmitters can act as ligands.

B. Acetylcholine is a neurotransmitter. It can bind to an acetylcholine receptor on the surface of a cell. If this receptor is also a sodium channel, we would call acteylcholine a ligand and its receptor a ligand gated receptor.

Explanation:

Answer:

A. Neurotransmitters can act as ligands.

B. Acetylcholine is a neurotransmitter. It can bind to an acetylcholine receptor on the surface of a cell. If this receptor is also a sodium channel, we would call acteylcholine a ligand and its receptor a ligand gated receptor.

Explanation:

Neurotransmitter are chemicals that transfer signals between neurons and nerve cells. They control some physical and physiologocal activity such as appetite, food.

Acetycoline is an example of neurotransmitter and it is located in the parasympathetic nervous system. Ligand are substance that form complexes with biomolecule. They serve biological purpose with this biomolecule.

This ligand binds to target site. Neurotransmitter act as ligand by binding to receptor in the postsynaptic neuron and acetycoline a type of neurotransmitter can also serve as ligand they bind to acetycoline receptor on cell surface.

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3 years ago
What effects can an invasive species have on an ecosystem?Choose all that apply
gogolik [260]

Answer:

It should be D.

Explanation:

The invasive species will negatively effect the ecosystem and the natural predator in the area. Like the Blue Lobster problem in Maine.

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3 years ago
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Which sentence supports the statement that complex, multicellular organisms are made up of specialized cells that each perform d
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It should be B as your answer.
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Rice plants possesses several traits which allow sthem to grow in large amount of water because standing water helps them to produce air channel known as aerenchyma that connects roots with shoots and transport oxygen to submerged tissues. Standing water also help many weed to grow and rice plants also takes nutrients from them as well.

Genes are responsible for the traits that allow rice plants to grow in large amount of water but if the gene of rice plant is genetically modified with new gene which is resistant to drought, that can allow the rice to grow in less water.

The genetically modified rice plant then do not require large amount of water and can grow easily.

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As a cell increases in size..
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