The correct answer is the option (A) heparin.
DVT refers to a condition called the deep vein thrombosis when a blood clot occurs in the deep veins of the legs in the body. PE refers to the Pulmonary embolism when a blood clot is observed in the artery of the lungs.
The drugs used in the treatment of DVT and PE are called the anticogulants which interfere with the process of blood clot formation. Heparin and warfarin are the two older anticoagulants used in the prevention and treatment and prevention of DVT and PE. Heparin is given intravenously to treat DVT and PE whereas, warfarin is taken as a tablet or pill through the mouth. Heparin allows the body's clot lysis mechanism to break down the existing clots and it is also a natural anticoagulant produced by the basophils and the mast cells of the blood.
Thus, heparin is the old drug that is used subcutaneously to prevent DVT in high-risk patients and intravenously to treat DVT and PE.
OA. It only maintains the cell shape.
ОВ.
It removes waste and stores ingested food.
OC. It generates energy for the cell.
OD.
It controls the entry and exit of substances.
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Answer:
D. It controls the entry and exit of substances.
Explanation:
The cell membrane provides protection for the cell, transporting nutrients in and carrying toxic substances out.
The biosphere will sustain when the inflow of additional carbon atoms is low due to ecosystem services.
The ecosystem services refers to the deteritous activity done by the microbes present in the soil which convert the soil organic matter into available carbon dioxide to the environment.
Hence, the biosphere will receive the flow of carbon atoms by the activity of deteritous.
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Answer:
The oxygen and carbon dioxide in the lower layers of the troposphere (that touches Earth) allow life to exist as organisms can respire and plants can photosynthesise. The atmosphere also helps to keep the Earth warm by trapping solar energy.
Explanation:
The cells are not able to stop the flow of the mentioned harmful substances into the cell as they fail to recognize them as foreign entities. These foreign toxins have intracellular targets with which they bind and lead to death of the cell.
The plasma membrane is formed of lipids. The toxins produced by the bacterial cells are water soluble. Therefore, they identify particular receptors on the membrane and associate with them. Thus, cell at certain occasions fail to identify them as foreign entities.
They combine with the plasma membrane of the cell and induce pore formation, however, there are many toxins that invade the cell and possess intracellular targets via endocytic vesicles. With the help of these vesicles, they deliver their enzymatic domain into the cytosol and results in the death of the cell by obstructing the metabolism of the cell.
Thus, cells fail to identify the bacterial toxins as foreign entities and they invade the cell and results in cell death.
Find out more information about invasion of foreign toxins here:
Answer:
There are specific receptors present on the surface of the normal cell membrane to recognize the molecules to allow them to pass or not. Most of the bacterial toxin are water-soluble molecules, and bound to the cell surface and interact with them as some time antibody-antigen interaction or cell recognition does not occur that form a pore in the cell membrane and toxins move into the cell.
Once toxins enter the cell they attack intracellular targets through endocytic vesicles. Ultimately these ends in cell death.
OA. A whale is a mammal that does not live on land.
B. A fish is not a mammal and does not live on land.
OC. A horse is a mammal that lives on land.
D. A snake is not a mammal but lives on land.
Whales are marine mammals that do not live on land, disproving the conjecture that all mammals live on land.
The correct counterexample that shows the conjecture “All mammals live on land” is false is option A. A whale is a mammal that does not live on land. Whales are marine mammals and live in water their entire lives. This counterexample disproves the conjecture that all mammals live on land.
B. have a primary structure made from a string of codons.
C. have a primary structure made of a string of amino acids.
D. have a primary structure made from a string of genes.
Proteins have a primary structure made of a string of amino acids, hence option C is correct.
The primary structure of the protein is made of linear chain of the amino acids. A gene is the segment of DNA that stores the information to express a particular amino acid through the process of translation.
In the process of translation, the sequence of amino acids are joined together to form a primary structure of protein, after that it change into confirmation and form secondary, tertiary and quaternary structures.
Thus, proteins have a primary structure made of a string of amino acids, hence option C is correct.
Learn more about proteins, here:
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Animal Kingdom comprises of eukaryotic, multicellular species of animals. Kingdom Animalia is monophyletic. Animals are evolved from flagellated protists similar to modern choanoflagellates.
Animal Kingdom includes organisms from simplest forms to the complex ones. All animals here are multicellular, eukaryotic and almost every animal is having specialised cells.
Some characteristics of animal kingdom includes:
Thus, option 3 and 5 are correct.
For more information about Animal Kingdom, visit:
Answer - 3) Kingdom Animalia is monophyletic
5) Animals are thought to have evolved from flagellated protists similar to modern choanoflagellates.
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