The calcium ions bind to the phosphateand are present in the dietary food sometimes calcium phosphate is a salt which is insoluble in water the calcium ions are absorbed by the cells of the intestinal as per the requirement the excess of calcium nd phosphate ions are excreted by the large intestine in the form of fences
In XO, 50 g element combines with 50 g oxygen 1 g element combines with 1 g oxygen. In XO2, 40 g element combines with 60 g oxygen 1 g element combines with 1.5 g oxygen Thus, ratio of masses of oxygen which combines with 1 g of element is 1 : 1.5 or 2 : 3. This is in accordance with the law of multiple proportions. In (B) the law of reciprocal proportions is followed. In (A) law of conservation of mass is followed while in (D) Avogadro’s law is followed
Persons with blood group B have B antigen on the surface of their RBCs and anti A antibodies (against A antigen) in their plasma. The person with AB blood group possesses both the antigens A and B on the surface of RBCs. If AB blood group is given to B group patient, agglutination occurs between anti A antibodies and A antigen.
This recognition site structure leads to a symmetrical cleavage of both DNA strands and results in either blunt- or sticky-ends of the digested DNA. Blunt ends are universally compatible with other blunt-ended DNA and possess a 5’ phosphate group to promote ligation. Sticky ends, on the other hand, are stretches of single-stranded DNA that is capable of selfligation or ligation with a complementary region of DNA from another molecule or organism.
A reduced raceme or cyme that grows in the axil of a bract is called a fascicle. A verticillaster is a fascicle with the structure of a dichasium; it is common among the Lamiaceae. Many verticillasters with reduced bracts can form a spicate (spike-like) inflorescence that is commonly called a spike.
Mendelian inheritance in humans is difficult to study. Current understanding of mendelian inheritance in humans is gained by analysis of family pedigrees or the results of matings that have already occured. By analyzing a pedigree, we may be able to predict how the trait is inherited. It is a visual tool for documenting the biological relationship in families and to determine the mode of inheritance (dominant, recessive etc.,) of genetic diseases. Whereas quantitative trait, polygenic trait and maternal traits are not studied bypedigree analysis. Continuous traits are often measured and given a quantitative value, they are often referred as quantitative traits, e.g., crop yield, weight, gain in animals, IQ, etc. Polygenic traits are another exception to mendels rule, which occurs when a trait is controlled by more than one gene. This means that each dominant allele adds to the expression of the next dominant allele. Maternal traits are the traits inherited and expressed from the maternal parent to the subsequent offsprings.
When a plant undergoes senescence, mineral ions are frequently mobilized from older parts to apical and lateral meristems, young leaves, developing fruits and seeds by diffusion and by active uptake by cells in the growing regions. This is known as translocation of nutrients.
Aldosterone is a type of steroid hormone that acts primarily in renal collecting ducts to stimulate reabsorption of Na+ as well as secretion of K+ and H+. It binds with intracellular receptors in the nucleus that stimulate the expression of several genes.
Potato is an underground modified stem. Potatoes mostly reproduce in vegetative manner. Potatoes have eyes like structure called nodes or buds. Shoots that come out from the buds are called sprouts which grow and become stems. They come out after a long period of dormancy. Roots also come out from the buds. The buds become new plants. The part of the stem grows under the soil is called underground stem. This underground stem starts swelling and transform into tuber or new potato. When the tubers are fully grown the mother plant dies. Nodes of tuber again give rise to buds and new plants as well.
In Inorganic Chemicals Chemosynthetic bacteria were the first organism on earth synthesise their own food by obtaining energy from chemicals like H2S,NO2, etc. Photosynthetic bacteria have taken their origin from Chemosynthetic bacteria. Sun, infrared rays and organic substances are not used as the sources of energy for Chemosynthetic bacteria.
Anaphase II The two sister chromatids of each chromosome are captured by microtubules from opposite spindle poles. In metaphase II, the chromosomes line up individually along the metaphase plate. In anaphase II, the sister chromatids separate and are pulled towards opposite poles of the cell.
NaCl is doped with 10-3 mole % of SrCl2.This means, 100 moles of NaCl are doped with 10-3 moles of SrCl2. Therefore, 1mole of NaCl is doped with 10-3 /100 = 10-5 moles of SrCl2 or 10-5 moles of Sr2+. Now, One Sr2+ ion create one cation vacancy. Therefore, no. of cation vacancies created by 10-5 moles Sr2+ = 10-5 moles/mole of NaCl = 10-5 x 6.022 x 1023 / mole of NaCl = 6.022 x 1018/ mole of NaCl
Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na⁺. Carbohydrates are absorbed as monosaccharides (simple sugars such as flucose, fructose, and galactose that cannot be further broken done by hydrolysis) or as disaccharides carbohydrates (such as sucrose, lactrose, maltose, and dextrin that can be hydrolyzed to two monosaccharides). These simpler molecules, however, must be obtained by the breaking down of polysaccharides, complex carbohydrates that contain many monosaccharides. Chief among these is amylase, a starch that accounts for 20 percent of dietary carbohydrate.
Corpus luteum secretes large amounts of progesterone which is essential for maintenance of the endometrium such an endometrium is necessary for implantation of the. fertilised ovum and other events of pregnancy