Answer:
Mangrove pneumatophore is the specialized root structures that are known to grow out of the water surface and help in the respiration of mangrove plants. They allow the collect oxygen from the atmosphere.
It mainly grows in mud and there the conditions are anaerobic means lack of oxygen. Oxygen is necessary for their survival that is done by the mangrove pneumatophore roots.
Primates, including humans, have different modes of locomotion such as bipedalism and brachiation due to specific morphological adaptations. These changes have been hypothesized to have evolved from our arboreal ancestors. Each primate subgroup, from lemurs to humans, has adapted in different ways to their environment.
Different modes of primate locomotion includes a series of movements like bipedalism, quadrupedalism, brachiation (swinging from branch to branch), leaping, and more. These locomotion modes are possible due to several morphological adaptations such as a rotating shoulder joint and thumbs and big toe widely separated from other digits, which allow for gripping branches. For instance, in bipedal locomotion, one leg is on the ground (stance leg) and the other is in the air (step leg) striding forward.
All primate species are believed to have descended from arboreal ancestors hence the adaptations for climbing trees. However, not all primate species today are arboreal. Large brains, stereoscopic vision, and a flattened nail instead of claws are among the specific characteristics of primates, especially those adapted to arboreal life.
Interestingly, humans are part of the primate order, which also includes lemurs, monkeys, and apes. These primate groups possess the necessary physical adaptations for different modes of locomotion, which allow them to live in diverse environments from tropical forests to savannahs.
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DNA is translated to produce tRNA, which assembles proteins.
DNA directs the production of mRNA; mRNA is translated to make tRNA; tRNA assembles the protein.
RNA directs the production of DNA; DNA contains genes that produce tRNA, which builds the protein.
The most probable answer here is the third option from the top, but it not entirely accurate because mRNA is not translated to make tRNA. The latter is already present in the cytoplasm of the cell.
The first step in protein synthesis is Transcription in which a new RNA molecule is synthesized from a DNA template. This process takes place in the nucleus of the cell. The new RNA strand is called messenger RNA or simply mRNA because it carries information from the DNA in the nucleus to the site where this information can be Translated from nucleotide language to amino acid language. This site is actually the ribosome/s usually located in the cell cytoplasm.
The ribosome attaches to the mRNA and begins to read the code on the mRNA.
tRNA which is free in the cytoplasm or attached to the ribosome begins to fetch the correct amino acid coded for by the mRNA from the amino acid pool in the cytoplasm.
These amino acids are linked together in the ribosome with the help of enzymes to make a polypeptide chain which is actually the protein, newly formed.
The statement that is true about Protein synthesis is that DNA directs the production of mRNA; mRNA is translated to make tRNA; tRNA assembles the protein.
The correct statement about protein synthesis is: DNA directs the production of mRNA; mRNA is translated to make tRNA; tRNA assembles the protein.
Protein synthesis involves two main steps: transcription and translation. Transcription occurs in the nucleus and involves the synthesis of mRNA using a DNA template.
The mRNA molecule then moves to the cytoplasm where it is translated by ribosomes and tRNA molecules.
The tRNA molecules bring specific amino acids to the ribosome, which then assembles them into a polypeptide chain to form a protein.
Overall, DNA provides the instructions for the synthesis of mRNA, and mRNA serves as the template for protein synthesis.
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Answer:
a. DNA to RNA to proteins.
Explanation:
DNA is the genetic material which is transcribed into RNA in nucleus. The mRNA leaves nucleus and joins ribosomes for the process of protein synthesis. The nucleotide sequence of mRNA serves as template for protein synthesis. Hence gene expression occurs in following direction:
DNA------> RNA--------> Protein
This unidirectional flow of genetic information is also called as central dogma.
The correct order in which genes are expressed is DNA to RNA to proteins.
The correct order in which genes are expressed is a. DNA to RNA to proteins.
During the process of gene expression, the DNA sequence is first transcribed into RNA through a process called transcription. The RNA molecule then serves as a template for protein synthesis, a process called translation, where amino acids are assembled into a polypeptide chain, forming proteins.
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B. Social sciences
C. Humanities
D. Natural and physical sciences