Name the following.
$(i)$ The process of uptake of mineral ions against the concentration gradient using energy from cell.
$(i i)$ The form in which glucose is stored in liver.
$(i i i)$ The vein that carries oxygenated blood.
$(i v)$ The cross between two parents having one pair of contrasting characters.
$(v)$ The structure formed by the villi of the embryo and the uterus of the mother.

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Solution

(i) Active Absorption: Active absorption refers to the process of uptake of mineral ions against the concentration gradient using energy from the cell.
(ii) Glycogen: it serves as stored form of glucose in liver.
(iii) Pulmonary vein is the only vein that carries oxygenated blood.
(iv) Monohybrid cross refers to inheritance of singe contrasting trait by two parents at a time.
(v) Placenta is the structure that develops from part of chorion that forms villi and the underlying uterine tissues with maternal capillaries.

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Find out the incorrect path or flow, in relation to the assimilation of the products of digestion, in humans.

I. Liver $\to$ the main organ to stimulate assimilation.

II. Amino acids $\to$ utilised by cells to produce parts of the basic cell structure, hormones, DNA. (excess is deaminated to form glucose).

III. Monosaccharides $\to$ converted to glucose $\to$ reaches bloodstream and gets used up by the cells for energy. (excess is stored as glycogen).

IV. Triglycerides $\to$ Fatty acids $\to$ used by the cells for homeostasis, repair and construction (excess is stored in adipose tissue).

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