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denis-greek [22]
4 years ago
7

What are three inventions used to reduce friction??

Biology
1 answer:
serious [3.7K]4 years ago
5 0
Lubricants, Magnetic Levitation, Ball Bearing
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Which response occurs because of the hormone auxin?
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Answer: The phototropic response occurs because greater quantities of auxin are distributed to the side away from the light than to the side toward it, causing the shaded side to elongate more strongly and thus curve the stem toward the light
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2 years ago
A cell containing only pure water is placed into a solution containing 1M sucrose. The cell's membrane is impermeable to water,
sesenic [268]

Answer: b and e

Explanation:

Two solutions are isotonic to each other if the have the same osmotic pressure.

Since the cell is impermeable to sucrose, sodium and chloride ion outside the cell, For the solution inside the cell to be isoosmotic to the solution outside the cell, same 1M of sucrose should be added to the solution inside the cell to balance osmotic pressure.

If osmolarity is the concentration of a solution expressed as the total number of moles per litre, also the addition of an ionic 0.5M Na+Cl- to the solution inside the cell will also balance the osmotic pressure.

0.5M if NaCl will dissociate and create an equivalent 1M osmotic pressure inside the cell.

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The disease ______________ is characterized by destruction of cns myelin sheaths and the formation of hardened scars. alzheimer'
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4 years ago
Which object is used to focus light in a light microscope? objective lens the stage adjustment knobs specimen slides
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The objective lens helps focus.
7 0
4 years ago
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Which characteristic is shared by cnidarians and flatworms? A) dorsoventrally flattened bodies
KatRina [158]

The correct option is (C) A digestive system with a single opening.

Which characteristic is shared by both cnidarians and Flatworms?

  • The class Soft-bodied stinging creatures like corals, sea anemones, and jellyfish are categorized as cnidaria. Numerous aquatic settings contain cnidarians. Sea anemones can be found all around the world, from the equator to the freezing northern regions and from small tide pools to the deep ocean floor.
  • Simple flatworm-like creatures belong to the phylum Platyhelminthes. Flatworms are parasites that live in or on other animals and are found on land, in fresh water, and in the ocean (e.g., tapeworms). Flatworm parasites can harm or even kill the host organism when they dwell on or inside of other species, including humans.
  • Although flatworms, like cnidarians, have a digestive system with only one opening into the digestive cavity, the cavity in independently living marine flatworms branches into every section of the body.

Learn more about the Phylum platyhelminthes with the help of the given link:

brainly.com/question/14441797

#SPJ4

6 0
2 years ago
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