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konstantin123 [22]
3 years ago
10

2 H202 ----...---> 2 H20 + 02

Biology
1 answer:
NeTakaya3 years ago
8 0

Answer:

The enzyme is<u> b. Catalase</u>

Explanation:

Catalases are ubiquitous biological catalysts or enzymes, that speed up reaction rates.  Here, they mediate<u> hydrogen peroxide decomposition</u> into water and oxygen.  They are essential in organisms on Earth exposed to oxygen as they protect cells from oxidative damage.

<h2>2 H2O2     -----→    2 H2O + O2</h2>

hydrogen peroxide                     water      + oxygen

Reactive oxygen species, or free radicals are very reactive-  they can cause damage to DNA molecules, RNA and proteins, leading to cell death.

<h2 />
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A part of an mRNA molecule with the following sequence is being read by a ribosome: 5'-UGC-GCA-3' (mRNA). The charged transfer R
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mRNA codons determine which amino acid will be added to the growing polypeptidic chain. tRNA anticodons pair these codons and add the correct amino acid. <em>The </em><em>dipeptide</em><em> formed will be </em><em>Cysteine-Alanine</em><em>.</em>

------------------------------------------

Let us review a few points,

  • In protein synthesis, the ribosome reads mRNA in the 5´ to 3´ direction.

  • According to the codons being readen, tRNA transfers the correct amino acids to build the polypeptide chain.

  • A codon is a short sequence of three nucleotides that store the genetic information for the aminoacids´ assembly.

  • Each codon represents one amino acid used to build the protein.

  • Each tRNA has two important sites. One of them that couples with the codon of the mRNA molecule, named anticodon. The other site couples with an amino acid.

  • The anticodon is a short sequence of bases that pairs with mRNA codons.

  • tRNA adds amino acids following the codons sequence in the mRNA molecule.

  • The protein grows from the amino terminus to the carboxy terminus.

  • Adenine forms pairs with Uracyl ⇒ A↔U
  • Guanine pairs with Cytosine ⇒ C↔G

In the exposed example,

→ mRNA     ⇒  codons   ⇒ 5'-UGC - GCA-3'

→ tRNA       ⇒ anticodons ⇒  ACG  CGU

→ proteins  ⇒ amino acids ⇒  Cys     Ala ⇒ Codon UGC codes for Cysteine

                                                                     ⇒Codon GCA codes for Alanine

So, for the given sequence of mRNA, tRNA anticodons are ACG and CGU. And the added amino acids are <em>Cysteine and Alanine</em>.

----------------------------------------------

Related link: brainly.com/question/10014731?referrer=searchResults

8 0
2 years ago
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If only a single member of a pair of chromosomes is present in a cell, it is a _____ condition and is most likely a _____ cell.
adelina 88 [10]
<span>Haploid; Reproductive</span>
8 0
3 years ago
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What characteristics do all animals share
Free_Kalibri [48]

Answer:

- Animals are multicellular.

- Animals are made up of cells that do not have cell walls.

- Most animals reproduce sexually. Some are capable of asexual reproduction by fragmentation, budding, or parthenogenesis.

- Animals are capable of motion in some stage of their lives.

Explanation:

4 0
2 years ago
g The Electron Transport Complex (ETC) consists of four proteins. How many of these proteins directly contribute to the proton g
vladimir2022 [97]

Answer:

Three proteins directly contribute to the proton gradient by moving protons across the membrane

Explanation:

The Electron transport chain is a group of proteins and molecules incrusted in the internal mitochondrial membrane and organized into four complexes, I, II, III, and IV. These complexes contain the electron transporters and the enzymes necessary to catalyze the electron transference from one complex to the other. Complex I contains the flavine mononucleotide -FMN- that receives electrons from the NADH. The coenzyme Q, located in the lipidic interior of the membrane, conducts electrons from complex I and II to complex III. The complex III contains cytochrome b, from where electrons go to cytochrome c, which is a peripheric membrane protein. Electrons travel from cytochrome c to cytochromes a and a3, located in the complex IV. Finally, they go back to the matrix, where they combine to H+ ions and oxygen, to form the water molecule. As electrons are transported through the chain, protons are bombed through three proteinic complexes from the matrix to the intermembrane space. These are complexes I, III and IV.  

6 0
2 years ago
Glaciers pick up large rocks and carry them away. This is called _____.
erma4kov [3.2K]

Answer: plucking

Plucking is a type of glacier erosion.Plucking occurs when the ice around the broken rocks, gets displaced with the force exerted by the retreating glacier. The glacier ice plucks the freezed rocks away along with it during glacier erosion.  

6 0
3 years ago
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