Why is diffusion and osmosis important to the cell

Answers

Answer 1

Answer: uses energy to move substances against (up) a concentration gradient or across a partially permeable membrane. In active transport a special transport protein in the cell membrane picks up the useful particle on one side of the membrane. The transport protein then rotates through the membrane and releases the particle on the other side of the membrane. This uses energy from cellular respiration.

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What was a common life form during the Cambrian period?

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At the beginning of the Cambrian Period, about 542 million years ago, there were sea creatures like hydras, jellyfish, sponges and seaweed living in the oceans, but only one-celled algae on land yet. Small arthropods like beetles were beginning to appear, and by 540 million years ago the first land plants evolved from the land algae. These plants were like modern moss.
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Which of the reproductive isolating mechanisms given below is postzygotic?A(Hybrids form but are sterile.
B(The mating season is different.
C(Flowers are pollinated by different insects.

Answers

A postzygotic reproductive barrier is a mechanism that reduces the viability or reproductive capacity of hybrid offspring. So it would be a hybrids form but a sterile.

Answer:

Explanation:

Bacteria with the ability to break down certain types of plastic are placed with colony for E. coli gain the ability to break down plastic as well. What inference can be drawn about the nature of plasmids from observation

Answers

Answer: Plasmid transfer occurs between the two colonies of bacteria and some of the E. coli gain the ability to break down plastic as well. What inference can be drawn about the nature of plasmids from this observation? Plasmids are nucleic acids which can pass on traits.

Who has the right to unlimited debate and unlimited opportunity to offer amendments in Congress? A. the president
B. senators
C. the Speaker of the House
D. the vice president
E. majority leaders

Answers

I believe the correct answer from the choices listed above is option B. It is the senators who has the right to unlimited debate and unlimited opportunity to offer amendments in Congress. Senators have two freedoms that no other legislators possess. These two freedoms are unlimited debate and an unlimited opportunity to offer amendments.

The answers is B the senators

Cell is to cytoplasm as mitochondria is to

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The cytoplasm is the inside of the cell that houses it's contents as such cytoplasm is to cell as MATRIX is to mitochondria. The matrix like the cytoplasm is the site of metabolic reactions in the mitochondrion as well as the DNA and enzymes are found in the matrix like the cytoplasm.

When a oligopoly exists, how many producers dominate the market

Answers

In an oligopoly type of market, there are only few producers whom dominate the market. This is the market type wherein there are only small number of firms that control the majority of the market share. The opposite to Perfect Competition, wherein there are unlimited number of producers. In an oligopoly, since there are only a few numbers competitors, each firm is likely to be aware of each other's action.

Answer:

Explanation:

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Darwin observed that the finches on two diffrent island in the galapagos belong to.the same family but showed alot of variations in their break size and shape how can this vaction be justified