Answer:
As a result of mitosis and meiosis, haploid and diploid cells are formed.
The cell will be diploid if it will have two sets of chromosomes, that is the number of chromosomes will be double than that of haploid one. And all the chromosome pairs in diploid are considered homologous chromosomes. e.g. the somatic cells of the body are diploid cells.
Haploid cells will be those who do not have chromosomes in pairs, a single set of chromosomes is found in them. e.g. the haploid spores or gametes cells. The chromosome number in haploid cells are represented as 'n'. Haploid cells are produced via meiosis in cell division.
Gram negative bacteria have significantly thicker walls than gram positive.
This thicker wall doesn't allow a stain to penetrate the bacteria, and are generally regarded as more dangerous.
Gram positive usually have a thinner cell membrane.
Answer:
The statement that is false is <u>metabolism is regulated largely by the nervous system.</u>
Explanation:
The metabolism reactions are controlled by the enzymes specific for each metabolic reactions. After a signal is generated, specific enzymes that detect the signal starts up the metabolic reactions.
When there is a need to stop a certain metabolic reaction, then the mechanism of feedback inhibition is used which stops the enzyme from carrying out any further reactions. Hence, the statement that metabolism is regulated largely by the nervous system is false.
Any mutations in DNA are forever, since DNA is the master blueprint. All mutations will be passed onto new cells through DNA replication, and all RNA made from that DNA will also have the mutation. If the mutation occurs in sperm or egg cells, those mutations will also be passed on to the organism's offspring.
Answer:
D. Normal cells have a large amount of cytoplasm, while cancer cells have a small amount of cytoplasm.
Explanation:
The cells that repeatedly undergo cell division have higher nuclear to cytoplasm ratio. Cancer cells undergo repeated uncontrolled cell division. They have a higher nuclear to cytoplasm ratio and maintain a small amount of cytoplasm. The larger nucleus of cancer cells has coarse hyperchromatin.
On the other hand, normal cells have a large amount of cytoplasm as compared to the cancer cells. They have fine chromatin and exhibit controlled cell division.
