biology one what is biology chapter one test

It is a positive inter specific interaction in which both the partners are mutually benefitted and increase the chance of their survival. However, the interaction is not obligatory for their survival as both can live without this interaction. For e.g., a) Crocodile bird (Pluvianus aegyptius) enter..

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These have one amino and one carboxyl group. For example, alanine, glycine. fig.13.13 - Structural Formula of Amino Acids Amino acids can become linked with one another by a linkage called peptide linkage. The amino group of one amino acid becomes linke..

If one observes the equation of respiration, the number of moles of oxygen needed is equal to the number of moles of carbon dioxide produced. This carbon dioxide to oxygen ratio is called the respiratory quotient. For carbohydrates, the respiratory quotient is 1 as can be seen b..

Simple and Compound Leaves - A leaf, in which the lamina is a single blade, is described as a simple leaf. It may be entire as in Mango or lobed as in Cotton. A compound leaf is one whose lamina is split into one or more distinct segments, called leaflets. The primary axis on wh..

1) Some amount of phosphorus is returned to earth in the form of birds excreta - Guano deposits (excreta of marine birds) and dead fish (around 60,000 tonnes which is less than 0.5% of phosphorus discharged from rivers). 2) Death and decay of organisms and decomposition of organic matter..

(aabbcc) in 1/64 individuals. fig. 18.13 - Quantitative Inheritance of Skin Colour in Human Beings In this situation, each dominant gene directs the synthesis of the same amount of the pigment melanin, which is responsible for skin colour. Hence, the shade of the skin colour is directly r..

>Examples of saprozoans are Mastigamoeba and Chilomonas. Symbiosis is the association of two dissimilar organisms. The association may be mutually beneficial (mutualism), benefiting one organism and harming another (parasitism) and benefiting one but having no effect on the othe..

Stamen forms the male reproductive unit and is made up of anther and the filament. The anther is generally bilobed with chamber containing several pollen grains. Pollen grains are produced in the anther . A very young anther comprises a mass of undifferentiated thin - walled cells bounded by an epi..

1) Glucose in the cells is phosphorylated by ATP in the presence of gluco hexokinase to form glucose-6-phosphate. 2) Glucose-6-phosphate is then converted into fructose-6-phosphate by the enzyme glucose phosphate isomerase. 3) Fructose-6-phosphate is then phosphorylated by ATP in the p..