BIOLOGY MIDDLE SCHOOL

Why did the video use the word evolve to describe the change that occurred from unicellular to multicellular life on earth

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Answer 1
Answer: Evolve is a term used to describe how one thing changes and become a higher form of itself so by saying that a multicellular change occurred from a unicellular change Then the correct term would be to say that it evolved
Answer 2
Answer:

Answer: Like the unicellular organisms that came before them, multicellular organisms developed when conditions were ideal for their development. The rise of multicellular organisms allowed for Earth to develop, or evolve, a wide range of life forms.

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The cells in our body are actually quite similar to unicellular organisms. They need food for energy, they communicate with the cells around them, and they create waste.However, there are major differences as well. One difference is thatA) only our body cells contain organelles. B) only unicellular organisms contain organelles. C) our body cells cannot survive on their own, while the unicellular organism can. D) our body cells can survive on their own, while the unicellular organism can not.

Carbon is found in carbonate rocks, such as limestone, in the atmosphere as carbon dioxide gas, in water as dissolved carbon dioxide, and in all organisms as organic molecules, such as carbohydrates and nucleic acids. Although these varying carbon-containing compounds exhibit different physical and chemical properties, their existence demonstrates

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Answer:

conservation of matter and energy

Explanation:

The layer of soil that contains the most organic material is called the ____ horizon.

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The letter that best fits in the blank of the sentence, "The layer of soil that contains the most organic material is called the _____ horizon" is O. This is the horizon with three distinct organic layers: one of pine needles, one of the leaves, and one of the twigs.
Most organic content is present in the top most layer, i.e., The O layer. It is rich in undecomposed plant residues. The O itself stands for the word organic. It is the surface layer and also contains material from dead plants and animals.It is mainly present in forests, and is also called as forest floor.

5 things mammals have in common

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5 things mammals have in common  is  All Mammals Have Lungs And Breathe Dry Air  .All Mammals Have Some Fur Or Hair On Their BodyAll Mammals Are Warm-bloodedAll Mammals Have Bones Including A Backbones
1)they all have hair 2)they don't lay eggs 3) they breath air 4)they can't fly 5)

What organ absorbs excess water from undigested food prior to its release from the body as a solid waste

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The large Intestine is the organ that absorbs excess water from undigested food prior to its release from the body as a solid food.

Answer:

1) Large Intestine

Where is a hurricane most likely to form

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 They form near the equator over warm ocean waters.

Transition step:Each pyruvic acid molecule is transported to the ____________

A one carbon molecule called _____ is released from each molecule of pyruvic acid and the remaining 2-carbon unit that is formed is called ________.

CoenzymeA is then attached to _ ____ to form ____________.

Additional energy is stored as reduced ______ molecules

Answers

Answer: mitochondrion, carboxylic group , acetyl group, acetyl group, acetyl CoA, NADH

Explanation:

Two pyruvate molecules remain at the end of glycolysis which still have a lot of extractable energy. The next step in storing the remaining energy in the form of ATP is oxidation by pyruvate. The transition steps are as following:

  1. Pyruvate must join the mitochondrion, cross its inner membrane and arrive at the matrix before the chemical reactions can begin.  
  2. A group of carboxyl (one carbon molecule) is snipped off of pyruvate and released as a carbon dioxide molecule, leaving behind a two-carbon molecule called the acetyl group.  
  3. The oxidised two-carbon molecule, acetyl group attached to Coenzyme A to form acetyl CoA.
  4. The additional energy during conversion is reduced NADH molecules and two carbon dioxide molecule.

Hence the correct order to fill the blanks is  mitochondrion, carboxylic group , acetyl group, acetyl group, acetyl CoA, NADH.
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Which of the following is TRUE about consumers?A. They are autotrophs.B. They make their own food.C. They include plants and some algaeD. They feed on other living organisms.