How is the universe organized into systems and galaxies

1 answer:

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The universe contains organized structures on all different scales, from small systems like the earth and our solar system, to galaxies that contain trillions of stars, and finally extremely large structures that contain billions of galaxies.

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What is Chlamydomonas?

saveliy_v [14]

Chlamydomonas is a unicellular algae. It occurs in many Varieties .Most of these are free floating,fresh water green algae.

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the plant body is unicellular and biflagellate.
the cell is spherical or cylindrical in shape .
the Protoplasm of the cell is always surrounded by a thin cellulose wall .
a pair of flagella of equal size is present at the anterior end. it moves by the lashing actions of the flagella.
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it contains a single nuclear suspended in colourless portion of the cytoplasm .

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3 years ago

How are molecules transported across cell membrane against the concentration gradient?.

Masja [62]

Answer: "To move substances against a concentration or electrochemical gradient, a cell must use energy. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the right concentrations of ions and molecules in living cells."

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2 years ago

A(n) _____ in a molecule influences the way that a molecule reacts.

vitfil [10]

The correct answer is option B, that is, functional group.

A functional group refers to a part of a molecule, which is a classified/recognizable group of bound atoms. The functional group provides the molecule with its characteristics, in spite of what molecule comprises it, they are the centers of chemical reactivity. The functional groups in a molecule require to be determined when naming.

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3 years ago

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3. Were there any stages of the cell cycle that you did not observe? How can you explain this using evidence from the cell cycle

mario62 [17]

Answer:

The surface area of the cell increases to volume ratio

Explanation:

As a cell grows, the surface area of the cell increases to volume ratio. When cell division occurs, the surface area is distributed and each daughter cell have less surface area but with the passage of time, the surface area increases. The main function of mitosis is to increase the population of the cell, the cell must be divided into two daughter cells in the process of mitosis. Tumors occurs when the process of mitosis is uncontrollable. One observation that is found interesting while looking at the onion root tip cells is the multiplication of the cells by the process of mitosis.

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3 years ago

What is the main difference between photosynthesis and cellular respiration?

allsm [11]

Answer:

D. Cellular respiration releases oxygen and photosynthesis releases carbon dioxide

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3 years ago