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natulia [17]
3 years ago
10

How old is the earth​

Biology
2 answers:
viva [34]3 years ago
7 0

The Earth is around 4.6 billion years old. earth has a slightly squashed sphere, measuring 7,973 miles (12,756 km) in the diameter at the equator.

Gnoma [55]3 years ago
4 0

Answer:

4.543 billion years

Explanation:

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What name is given to the monomers of proteins? fatty acids monosaccharides amino acids nucleic acids
Ghella [55]

Answer:

The correct answer is amino acids.

Explanation:

The organic compounds, which associates together to produce proteins are known as amino acids. The proteins and amino acids are the building blocks of life. At the time of the digestion or dissociation of proteins, amino acids get left. A huge ratio of the muscles, cells, and the tissues are formed of amino acids, which shows that they conduct various essential functions of the body like providing cells their composition.

7 0
3 years ago
Which of the following is TRUE regarding meiosis?
Elden [556K]
C

Explanation


Meiosis 2 is similar to mitosis because it separates the chromosomes to have sister chromatids in each cell. In both processes, you are separating the chromosome and dividing the cell to make 2 cells out of 1 (the only difference is that in meiosis, you're doing that for 2 cells to get 4).
7 0
2 years ago
Letter D is the part of the cell that makes proteins. What is letter D? A) ribosomes B) chromosomes C) chloroplast
kvasek [131]
The correct answer is option a). Ribsomes.
5 0
2 years ago
Read 2 more answers
For this task, you will imagine that you are a reporter for a scientific magazine. Your task is to explain the process of protei
amid [387]

Answer:

Please find the explanation below

Explanation:

Our nucleus is made up of a genetic material called deoxyribonucleic acid (DNA), which is a double-helical structure that stores the genetic information needed for the optimal functioning of any organism. DNA, alongside RNA are nucleic acids that are composed of NUCLEOTIDES subunits. The nucleotide consists of a pentose sugar (deoxyribose in DNA and ribose in RNA), nitrogenous base and a phosphate group.

However, the genetic information stored in the DNA molecule needs to be expressed in order to form useful products (proteins). This genetic expression is done in two stages viz: transcription and translation. Transcription, which is catalyzed by an enzyme called RNA polymerase is the process whereby the information stored in the DNA is used to synthesize a mRNA molecule. However, this mRNA molecule is considered pre-mature until it is processed. RNA processing occurs in three stages viz: 5' capping, polyadenylation, and splicing.

5' capping involves adding a 5' cap to the marks molecule. Polyadenylation involves adding a poly(A) tail to the mRNA molecule while splicing is the removal of introns (non coding regions) with the aid of Spliceosomes and joining of the exons (coding region). After processing, the mRNA becomes matured and ready to be translated.

Translation is the process whereby the mRNA transcript is used to synthesize a protein molecule. It occurs in the ribosomes (organelles for protein synthesis, a complex of rRNA and proteins) where the mRNA is read in a group of three nucleotides called CODON. The reading is done by the Anticodon of a transfer RNA (tRNA), which is complementary to the codon.

Translation occurs in three stages: initiation, elongation and termination. The mRNA attaches to the P site of the ribosomes (initiation) where it is attached to by a tRNA's anticodon complementary to it. The anticodon carries the amino acid corresponding the codon and shifts to the A-site. The addition of amino acid to the polypeptide chain continues (elongation) until a stop codon is encountered, which signals the end of the translation process i.e. termination. This causes the polypeptide (protein) to be released from the E-site.

The synthesized protein undergoes packaging and modification in the Golgi apparatus.

5 0
3 years ago
Assess the effect of selective breeding on food crops.
vesna_86 [32]
There are numerous advantages and disadvantages that selective breeding has on food crops. A few of the advantages are; the creation of high quality products, provides a sustainable food chain, eliminates disease and creates new varieties of food crops. A few disadvantages of selective breeding on food crops are; no control over genetic mutations, brings discomfort to animals, creates offspring with different traits, and poses some environmental risks. 
4 0
3 years ago
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