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NemiM [27]
3 years ago
12

Fill in the blank

Biology
1 answer:
Ivan3 years ago
8 0
Hello there Shahnaaz!

Your answer is B. Nucleus

The Nucleus directs a cells activities and is often deemed the "brain" of a cell.

Hope this helped you and have a wonderful day!

~Rose
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Name and describe the key components of the two major divisions of the nervous system.
defon

The Central Nervous System

     -Serves as the control center for the body

The Peripheral Nervous System

     -Sends information to and from the brain and spinal cord

     -Divided into the sensory somatic nervous system and the autonomic nervous<span> <span>system</span></span>

3 0
3 years ago
The electrons for photosynthesis come from:
user100 [1]

Answer:

The energy comes from electrons produced by oxidation of biological molecules.

Explanation: In photosynthesis, the energy comes from the light of the sun.

Hope this helped! :)

6 0
3 years ago
The ___________ propel debris-laden mucus away from lower respiratory system structures.
Aliun [14]

The cilia propel debris-laden mucus away from lower respiratory system structures.

<h3>What is function of mucous membrane?</h3>
  • Another general defense against possible infections is provided by the mucous membranes that line the digestive, urinary, and respiratory tracts, as well as the nose, mouth, and lungs.
  • In order to cover and protect the more delicate cell layers underneath it and to trap waste and particle matter, including microorganisms, mucous membranes are made up of a layer of epithelial cells connected by tight junctions.
  • Because they feature ciliated appendages, which resemble hairs, the epithelial cells lining the upper portions of the respiratory tract are known as ciliated epithelial cells.
  • Mucus that contains debris is forced out and away from the lungs by the cilia's movement. The mucus is then coughed up, sneezed out, or swallowed and destroyed in the stomach. The mucociliary escalator is another name for this route of elimination.

Learn more about the Mucous membrane with the help of the given link:

brainly.com/question/25968581

#SPJ4

8 0
2 years ago
Why can you not prove a hypothesis
ss7ja [257]

Answer:

To conclude, you cannot prove a hypothesis because you can never generalise the results to the whole population and foresee the results will always be the same in the future. You can however, reject the null hypothesis consistently, through statistical hypothesis testing so that the theory becomes highly likely to be true, but not proven.

Explanation:

5 0
3 years ago
1. For this task, you will imagine that you are a reporter for a scientific magazine. Your task is to explain the process of pro
JulijaS [17]
All cells as we can say they work through their proteins. The work of proteins is being characterized by their sub-atomic capacity, contribution to a specific natural process and limitation inside. Segments of protein work which are being characterized by the correct synthesis, adaptation of proteins and structure which are being scrambled in the DNA area which is another name is called locus encoding the protein.
New proteins are being produced by the procedure of protein combined with organic cells, which are adjusted by the loss of protein cell through corruption. The RNA which is duplicated in protein hereditary data is encoded in DNA atom which is being created in the core known as RNA or mRNA. mRNA encodes data which is for solitary protein and is considered little in estimate by contrasted with DNA atom. This makes work easier for mRNA particles to leave the core passing through some small openings called atomic pores.
It leaves the core and goes straight to the cytoplasm. mRNA interferes with cell structure referred to as ribosome and fills in as cells contrasting agent within the procedure of protein union. Ribosome comprises of ribosome RNA particles or rRNA and proteins which are sorted out into two subunits.
When a small subunit is being accused of tRNA and corrosive amino acid methionine experiences mRNA which begins to begin flag.
When beginning succession AUG is found then the codon for corrosive amino methionine where substantial subunits join the little one to frame and hole ribosome where now protein amalgamation starts.
Following the codon downstream of AUG codon, the elongation of tRNA and amino corrosive enter to the ribosome. tRNA with wrong amino corrosive and wrong anticodon enters ribosome it is rejected because it can not base pair with mRNA.
The ribosome then propels on triplet and amino corrosive and tRNA enters the ribosome and method is then rehashed. In the termination, the ribosome achieves all the stop codons. Post-translation modification alludes to the covalent and leads to large enzymes change of proteins following biosynthesis of protein PTM happens in any progression within the life cycle of protein.
Protein in PTMs can be reversed depending upon the idea of change for example kinases phosphorylate of protein at a certain amino corrosive side chains phosphatases hydrolyzes phosphate where they gather and expel it from protein.
3 0
3 years ago
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