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3 years ago

Describe carolus linnaeus (who was he) and his classification system (why was it needed). be specific.

1 answer:

4 0

Answer:
A Swedish naturalist, Carolus Linnaeus also known as father of taxonomy because he developed a way to name and organize species which is still used in modern system of classification. In 1753 he proposed three kingdom system of classification which was published in Systema Naturae.
Contributions:
His two important contributions were:
1. A hierarchical classification system
 2. The system of binomial nomenclature.
Need of classification:
At that time different local names were given to a single species in different languages. So it was difficult for people or scientists to remember the names. He proposed a binomial nomenclature system, in which scientific name was assigned to each organism which was based on species and generic part. It help in identifying an organism by single name through out the world.

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Eukaryotic cells. Classify each statement according to whether it occurs in eukaryotic cells, prokaryotic cells, or both.

frutty [35]

Answer:

Both:

The start codon is often AUG

Eukaryotic cell only:

The larger subunit of the ribosome is 60s.
The ribosomes initially binds the 5' end of mRNA.

Prokaryotic cell only:

The ribosome is 70s
Translation occurs in the cytoplasm
There are multiple ribosome binding site

Explanation:

AUG is the common start codon for both eukaryotic as well prokaryotic cells. In eukaryotic cell, it codes for methionine . While in prokaryotic cell, it codes for formyl methionine.
In prokaryotic cell, ribosomes are found in cytoplasm, hence the translation occurs in cytoplasm.
Eukaryotic ribosome consists of two subunits; 40s and 60s(larger subunit)
Prokaryotic ribosomes have 70s ribososme, which consists of 50s and 20s subuints
in eukaryotic cell, 40s ribosome initially binds to the cap at the 5' end of mRNA.
Bacterial mRNA contain multiple ribosome binding sites.

8 0

3 years ago

Other molecules that make up the cells are

Shalnov [3]

Cells are composed of water, inorganic ions, and carbon-containing (organic) molecules. Water is the most abundant molecule in cells, accounting for 70% or more of total cell mass. Consequently, the interactions between water and the other constituents of cells are of central importance in biological chemistry.

8 0

3 years ago

Apa template about multiple sclerosis

garik1379 [7]

Answer:

Multiple Sclerosis is an inflammatory disease in which myelin sheath of nerve cells of brain and spinal cord are damaged.

Explanation:

Cause:- (Exact cause of inflammation is not known)

But damage is caused due to attack by autoimmune cells or antibodies against myelin sheath.

Types of tissues attack:-

Oligodendrocytes and myelin sheath is damaged and stripped away from axon and the process is known as demyelination.
Myelin sheaths are made up of fatty tissues and help in transmission of electric impulse.

Result of immune system attack:-

Damaged myelin sheath stop forming whIte matter of central nervous system.
Hence disrupt coordinating communication between different brain regions.

Signs and symptoms:- vary from person to person

Diminished eyesight.
Disrupt motor coordination.
Weak sensory perception.
Fatigue and dizziness.
Speech disorder.
Muscle weakness and spasticity.
Difficulty in urination and stool.

Diagnosis and treatment:-

Diagnosis include MRI T2 findings and cerebrospinal fluid specific oligoclonal bands.

#SPJ2

7 0

2 years ago

Question 6 (2 points) Which is an example of artificial selection? a b Big Horn sheep fighting to defend females, who mostly bre

Tomtit [17]

Answer:

the one with the race horse. brainliest?

Explanation:

3 0

3 years ago

Your patient has suffered a severe electrical burn. when caring for electrical burn injuries, you should never:

Firlakuza [10]

Hey there,
Step 1: Never attempt to remove a patient from an electrical source unless the EMT is trained and equipped to do so.
Step 2: Never touch a patient who is still in contact with the electrical source
Step 3: Administer oxygen by nonrebreather mask at 15 lpm
Step 4: Monitor the patient for cardiac arrest
Step 5: Assess the patient for muscle tenderness with or without twitching and any seizure activity
Step 6: Assess for an entrance and exit burn injury
Step 7: Transport the patient as soon as possible.

Hope this helps :))

~Top

6 0

3 years ago