Answer: One red blood cell will be able to carry one billion molecules of oxygen.
Explanation:
If each red blood cell carries 250,000,000 hemoglobin and every molecule of hemoglobin binds four oxygen molecules, the number of oxygen molecules carried by one red blood cell is 250,000,000 x 4 = 1,000,000,000. That is 1billion oxygen molecules is been carried by one red blood cell. Hemoglobin is a protein present in the red blood cell which binds and transports oxygen to the cells throughout the body. Hemoglobin has four binding sites for oxygen. The binding of one oxygen to its binding site on hemoglobin increases the binding affinity of subsequent oxygen molecules to the other binding sites on the hemoglobin. This phenomenon is known as cooperativity.
Answer: i guess it is the option (c) because Pesticides are poisonous and, unfortunately, they can harm more than just the “pests” at which they are targeted. They are toxic, and exposure to pesticides can cause a number of health effects. They are linked to a range of serious illnesses and diseases from respiratory problems to cancer.
Explanation:
Firstly they are not membranes and they are villi's which increase the surface area during digestion
Answer:
In the haploid cell, only one pair of sister chromatids are present, whereas in the diploid cell, two pairs of sister chromatids are present.
Explanation:
Chromosomes with their sister chromatids become visible during prophase. A haploid cell has only one complete set of chromosomes while there are two complete sets in a diploid cell. Therefore, prophase in a haploid cell would show the presence of only one pair of sister chromatids for each chromosome. This cell would not have the homologous pair with two pairs of sister chromatids.
On the other hand, the diploid cell would have two homologous chromosomes for one homologous pair. Each of the chromosomes of a pair would have two sister chromatids. Therefore, one homologous pair would have a total of four chromatids or two pairs of sister chromatids.
