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Leona [35]
2 years ago
10

What are characteristics of minerals? Select 3 choices,​

Biology
2 answers:
Brrunno [24]2 years ago
5 0

Answer:

- Color

- Luster

- Chemical Reaction

Explanation:

GarryVolchara [31]2 years ago
3 0

Answer:

  • occur naturally
  • different minerals have different chemical composition
  • they have an specific internal structure

Explanation:

Minerals are substances found in nature, formed by a balanced chemical composition, resulting from millions of years of inorganic processes (heat action, pressure, etc.). All minerals are solid, such as feldspar, mica, quartz. Water, despite having a mineral source, is not an ore, as is mercury (which is liquid at room temperature). In other words, a mineral is any homogeneous substance, solid or liquid, of inorganic origin that arises naturally in the earth's crust. Usually with defined chemical composition and, if formed under favorable conditions, will have ordered atomic structure conditioning its crystalline form and its physical properties.

We can summarize the characteristics of minerals in:

  • occur naturally
  • different minerals have different chemical composition
  • they have an specific internal structure
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Answer:

True

Explanation:

When the resting potential of the membrane is changed, the membrane becomes either more negative inside or less negative. This small deviation from the resting potential is called graded potential. A graded potential occurs when a stimulus triggers opening or closing of the mechanically gated  or ligand-gated channels present in the plasma membrane.

For example, the presynaptic neuron releases neurotransmitters in response to a nerve impulse. The neurotransmitter binds to receptors present in the plasma membrane of the postsynaptic neuron and triggers the opening of the ion channels to allow the inflow of particular ions to flow. The flow of ions changes the voltage across the membrane. This change in membrane voltage is a postsynaptic potential and is a type of graded potential.  

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Which cell function would be affected if a cell's vacuoles were destroyed?
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The enzyme salivary amylase will act on starch but not on protein.This action illustrates that salivary amylase
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2) is chemically specific

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amm1812

Answer:

Low Enzyme Production is the reason for no breaking down of food.

Explanation:

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