Plasma membrane allows some material to pass through it while on the same time it blocks other material from entering through it.
Answer:
Cell A: sperm
Sex of Rabbit: Male
Offspring are not genetically identical because of the crossing over period in meiosis. Pieces of chromosomes switch places, producing genetically unique gametes/sex cells. Also, during fertilization, the offspring gets 1/2 its DNA from the mother and the other 1/2 from the father, so it will not be identical to either parent.
Answer:
The correct answer will be option-C
Explanation:
The genome size is the total amount of DNA present in the organisms which includes both coding and non-coding sequences. The genome size is measured in the C-value.
The gene complexity is the complexity in the DNA of an organism which arises due to gene duplication and other mechanisms.
The gene complexity does not show correlation with the size of the organisms which is expected that the larger eukaryotes will have a larger genome size. This is known as the C-value Paradox.
In the given question, since the yeast contains 13 MB, Humans contains only 2,900 Mb whereas a plant of Lily family contains about 120,000 Mb which shows that the lily should be the largest eukaryote which is not the case.
Thus, Option-C is the correct answer.
The bacteria, Angelinus ballerinea secretes a compound that inhibits the growth of other Gram-positive bacteria. Scientists take this compound and add chemical groups to it to make it more stable for use in humans to treat bacterial infections. This is an example of antibiotic.
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What is antibiotic?</h3>
- Antibiotics from the key class of glycopeptides can stop this process.
- Through five H-bonds, these antibiotics bind to the C-terminal d-Ala-d-Ala of the murein precursor, lipid II, and immature peptidoglycan, preventing transglycosylation and/or transpeptidation during the production of the cell wall.
- Contrarily, antibiotics have easier access to the thick, porous peptidoglycan layer in the cell walls of Gram-positive bacteria, allowing them to more easily enter the cell and/or interact with the peptidoglycan itself.
- The two main antibiotics that prevent the synthesis of bacterial cell walls are penicillins and cephalosporins.
- Penicillin is one of many antibiotics that assault the bacterial cell wall in order to operate.
- The medications specifically stop the bacteria from producing peptidoglycan, a chemical that gives the cell wall the toughness it needs to live in the human body.
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Blood is isotonic to cells in order to conserve the shape and structure of the surrounding cells.
- Isotonic solutions are solutions that have the same concentration of water on both sides of a cell membrane.
- In this case, the blood is an aqueous fluid that exhibits isotonic properties compared to its surrounding cells.
- Isotonicity enables the blood to transport oxygen and nutrients to the cells but simultaneously conserves the structure and form of these cells.
In conclusion, blood is isotonic to cells in order to conserve the shape and structure of the surrounding cells.
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