Answer: Hydrosphere
Explanation: The hydrosphere is all the water such as lakes and rivers.
It also includes all the gas clouds because water can be solid, liquid, or gas
so oceans, ice caps, and water vapor is included.
Answer:
(c). Eukarya.
Explanation:
Prokaryotes are primitive, single-celled organisms that lacj complex membrane-bound cell organelles, such as nucleus, mitochondria, and endoplasmic reticulum.
Prokaryotes are grouped into two domains, including Archaea and Eubarteria. Archaea includes prokayotes that can live in extreme conditions are known as extremophiles, while domain Eubacteria includes all true bacteria.
Prokaryotes do belong to domain Eukarya as Eukarya includes all eukaryotic organisms.
Thus, the correct answer is option (C).
A streamlined body is a body that is shaped to specifically reduce friction drag when moving.
Flippers and flattened tails are used to propel an animal through the water.
A smooth, almost gutless body is light, which is important when animals have to go through water quickly.
A thick layer of blubber is only used for insulation, and would hamper an animal's progress through water due to its weight.
The answer is B. thick layer of blubber.
Proteins are unbranched polymers constructed from 22 standard α-amino acids.
The protein show four levels of structural organisation; the primary structure, secondary structure, tertiary structure and quaternary structure.
The structure of proteins are stabilized by peptide bonds between the amino acid and hydrogen bond between the peptide chainds.
The primary structure of a protein is determined by the sequence of amino acids, but secondary and tertiary structures of protein define their natural or native conformation.
The solubility of protein varies according to the pH, ionic strength, nature of solvent, temperature etc.
Proteins can be classified as simple proteins or conjugated proteins on the basis of their composition.
The proteins can also be classified as fibrous proteins or globular proteins on the basis of their shape.
Proteins play a major part in body structure and function as most of the molecules like antibodies, immunoglobulins, hemoglobin, myoglobin ,most of the enzymes are proteins.
So proteins are also called building blocks of the body.
