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Verizon [17]
4 years ago
12

The five basic stages of sleep are further classified into two distinct orders characterized by

Biology
1 answer:
Shtirlitz [24]4 years ago
5 0
When a person is sleeping, the body moves into 5 different stages which is characterized by a Rapid Eye Movement and a Non- Rapid Eye Movement sleep. The body usually spends 90 minutes in each of the stages. First stage is called the Transitional Phase, second stage is called a Non Rem phase, stages 3 and 4 are known as the deep stages of sleep and the 5th stage is the only Rapid Eye Movement.
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2. Which material is found near yolcanoes?<br> A. Coal<br> B. Oil<br> C. Freshwater<br> D. Metal
aksik [14]

Answer:

the answer is D. Metal..

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3 years ago
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The building of proteins, or translation, occurs on which number-labeled organelle?
Vsevolod [243]

Answer:

The Ribosome

Explanation:

The Ribosome is made of rRNA and is where translation involving mRNA occurs. This is during the process called Protein Synthesis.

7 0
4 years ago
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discuss the different phases of the cell cycle. At which part of the cell cycle would you expect that a change in regulation cou
scZoUnD [109]
Cell division involves two processes mitosis and meiosis. Both of these processes are involved to help the cell divide and result to two diploid  daughter cells and for meiosis four haploid daughter cells. 

<span>A normal, typical and functional cell undergoes cell cycle in normal fashion and eventually reaches apoptosis. Yet cancer cells fail to display just some of these characteristics.

</span><span>The cycle cycle; mitosis occurs more in your body since it changes, modifies and requires cell division at maximum rate in many useful situations with the stand to a particular system and organ. Mitosis and meiosis are simply cell division processes that occurs differently, they're characteristically divergent from each other according to their function and structure. Mitosis is the cell division that happens in all cells in the human body except sperm and egg cells. They produce diploid cells.</span>
3 0
3 years ago
When molecules or ions move across a membrane against a concentration gradient so that they accumulate on one side of the membra
alexandr1967 [171]

When molecules or ions move across a membrane against a concentration gradient so that they accumulate on one side of the membrane, they do so through Active transport.

  • Active transport pumps molecules and ions against a concentration gradient, in contrast to passive transport, which doesn't need energy and moves molecules or ions down a concentration gradient.
  • An organism occasionally needs to move something up or down a concentration gradient.
  • This can only be accomplished through active transport, which uses ATP (adenosine triphosphate), which is created during cellular respiration.
  • Particles pass through a cell membrane during active transport from a lower concentration to a higher concentration.
  • The process of pumping molecules and ions across membranes "uphill" – against a concentration gradient – is known as active transport.

learn more about Active transport here: brainly.com/question/25802833

#SPJ4

6 0
2 years ago
Describe 3 ways oxygen gas is removed from the atmosphere and used.
alex41 [277]
Cells from plants and animals uses Oxygen and sugar to release carbon dioxide during photosynthesis, plants use CO2 and water to make Oxygen which humans breathe and use when oxygen combines or react with other materials - for example rust
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4 years ago
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