Answer:
Chemical reactions.
Explanation:
Chemistry is the study of different chemicals and their chemical reaction. Every day one uses the things all are made up of chemicals. All the chemicals and matters are the result of the chemical reaction.
For example, water is a compound which is formed by the hydrogen bond between the 2 hydrogens and one oxygen molecule. The properties of water are also different from individual hydrogen and oxygen molecules.
Our body is also made up of 70% to 80 % of water. All the metabolic reaction need water. Similarly, all matters are made up of chemicals. Chemical reactions happen when an organism eat, breathe, division of cell occur, etc. Every physiological process includes a chemical reaction.
The living organisms consist of some biomolecules, carbon, hydrogen, oxygen, nitrogen. All are playing a vital role in different biochemical reactions. Biochemistry is the branch of study in biology which deals with the role of chemistry in biology.
Chemistry and biology are important for studying the different chemical reactions occur in the living organisms. Proteins, carbohydrates, lipids, are all formed due to the chemical reaction and these are known as biomolecules.
Answer:
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Explanation:
Organism characteristics are influenced by the amino acid sequences of proteins coded by their DNA. Amino acids vary in chemistry and structure thereby causing variation in protein structure and function. Similarities in sequences can infer close evolutionary relationships.
The characteristics of an organism are fundamentally determined by the amino acid sequences of its proteins. Protein sequences, composed of the 20 common amino acids, are coded by the DNA molecule in the cell. Therefore, the sequence of a DNA molecule plays a significant role in understanding an organism's identity and function.
Different amino acids have different chemistries and structural constraints, thus causing enormous variation in protein structure and function. This variety is responsible for the diversity and complexity of life. For instance, the human cytochrome c protein contains 104 amino acids, but when compared to the same protein in different organisms, only 37 of these amino acids appear in the same position. This suggests these organisms are descended from a common ancestor.
Moreover, the 3-dimensional structure of proteins, determined by the amino acid sequence, contains significant information about evolutionary relationships. These relationships can be inferred from variations over time of the nucleotide sequence of a gene. The more similar these sequences are in two organisms, the more closely related they are.
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DNA is a polymer consisting of repeating units known as nucleotides.
Deoxyribonucleic acid (DNA) can be defined as a hereditary material that is found in the cell nucleus of organisms which contains genetic information of the parent cells.
The Deoxyribonucleic acid (DNA) is made up of repeating strands of four nucleotides such as the adenine (A), thymine (T), guanine (G), and cytosine (C).
The functions of DNA to cells include the following:
Learn more about DNA here:
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detect when the speaker’s voice changed from male to female
B.
identify any phrase associated with the unattended information
C.
detect when the unattended language was changed to German
D.
notice specific changes when the unattended speech was played backward
Answer: C. detect when an unattended language was changed to German.
The cocktail party effect refers to ability of a person to focus on a single speaker or conservation in a noise prone area. This mainly reflects listening ability of the person in a noisy environment. If a listener hears unattended language for a particular time along with noise.The listener may loose interest in listening and he will not show alertness when language changes to German which could be known language to listener.
In experiments testing the cocktail party effect, most participants were only able to detect when the speaker’s voice changed from male to female, illustrating the selective nature of our auditory perception.
The cocktail party effect is a psychological phenomenon where one can focus their auditory attention on a specific source while filtering out other background noises. This effect is named after a scenario of a cocktail party where one can focus on a single conversation in a noisy room. In experiments testing this effect, most participants were able to do one specific thing from the options given: that is, option A. detect when the speaker’s voice changed from male to female.
Participants found it hard to perform all the other tasks given. This is because the 'unattended' information in the auditory scene was not being processed to the point where the participants could identify phrases (option B), notice language changes (option C), or detect specific changes when the speech was played backward (option D). This highlights the selective nature of our auditory perception.
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