Trypsinogen is an inactive enzyme of pancreatic juice.
Question: Trypsinogen is an inactive enzyme of pancreatic juice. An enzyme, enterokinase, activate it. Which tissue/ cells secrete this enzyme?/ How is it activated? Solution: Enterokinase is secreted by the intestinal mucosa. The Trypsinogen is activated by Enterokinase into active trypsin....
Read More →Evaluate the following integrals:
Question: Evaluate the following integrals: Solution: Assume $\tan ^{-1} x=t$ $d\left(\tan ^{-1} x\right)=d t$ $\Rightarrow \frac{1}{1+x^{2}} d x=d t$ Substituting $\mathrm{t}$ and $\mathrm{dt}$ in above equation we get $\Rightarrow \int \frac{1}{\sqrt{t}} \mathrm{dt}$ $\Rightarrow \int \mathrm{t}^{-1 \backslash 2} \cdot \mathrm{dt}$ $\Rightarrow 2 \mathrm{t}^{1 \backslash 2}+\mathrm{c}$ But $\mathrm{t}=\tan ^{-1}{ }_{\mathrm{x}}$ $\Rightarrow 2\left(\tan ^{-1} x\right)^{1 / 2}+c$...
Read More →The food mixes thoroughly with the acidic
Question: The food mixes thoroughly with the acidic gastric juice of the stomach by the churning movements of its muscular wall. What do we call the food then? Solution: The food mixes thoroughly with the acidic gastric juice of the stomach by the churning movements of its muscular wall and is called the chyme....
Read More →Mark the right statement among the following
Question: Mark the right statement among the following a. Trypsinogen is an inactive enzyme b. Trypsinogen is secreted by intestinal mucosa c. Enterokinase is secreted by pancreas d. Bile contains trypsin Solution: Option (a)Trypsinogen is an inactive enzyme is the answer....
Read More →The liver is the largest gland and is associated
Question: The liver is the largest gland and is associated with various functions. Choose which is not correct from the following. a. Metabolism of carbohydrate b. Digestion of fat c. Formation of bile d. Secretion of a hormone called gastrin Solution: Option (d)Secretion of a hormone called gastrin is the answer....
Read More →Solve this
Question: (i) $\cot x$ (ii) $\operatorname{secx}$ Solution: To find: Differentiation of cotx Formula used: (i) $\left(\frac{u}{v}\right)^{\prime}=\frac{u^{\prime} v-u v^{\prime}}{v^{2}}$ where $v \neq 0$ (Quotient rule) (ii) $\frac{d \sin x}{d x}=\cos x$ (iii) $\frac{d \cos x}{d x}=-\sin x$ We can write cotx as $\frac{\cos x}{\sin x}$ Let us take u = cosx and v = sinx $u^{\prime}=(\cos x)^{\prime}=-\sin x$ $v^{\prime}=(\sin x)^{\prime}=\cos x$ Putting the above obtained values in the formula:- $...
Read More →The dental formula in human beings is
Question: The dental formula in human beings is a. 3 2 2 3 3 2 2 3 b. 2 1 2 3 2 1 2 3 c. 1 2 3 2 1 2 3 2 d. 2 2 3 3 2 2 3 3 Solution: Option (b) is the answer....
Read More →Match the enzyme with their respective
Question: Match the enzyme with their respective substrate and choose the right one among options given Options: a. A-ii, B-iii, C-i, D-iv b. A-iii, B-iv, C-ii, D-i c. A-iii, B-i, C-iv, D-ii d. A-ii, B-iii, C-iv, D-i Solution: Option (d) A-ii, B-iii, C-iv, D-i is the answer....
Read More →Match the two columns and select
Question: Match the two columns and select the right one among options given Options a. A-i, B-ii, C-iii, D-iv b. A-iv, B-iii, C-ii, D-i c. A-iii, B-i, C-iv, D-ii d. A-ii, B-iv, C-i, D-iii Solution: Option (c) A-iii, B-i, C-iv, D-ii is the answer....
Read More →Evaluate the following integrals:
Question: Evaluate the following integrals: $\int \frac{\sin ^{3} x}{\sqrt{\cos x}} d x$ Solution: In this equation, we can manipulate numerator $\sin ^{3} x=\sin ^{2} x \cdot \sin x$ $\therefore$ Now the equation becomes, $\Rightarrow \int \frac{\sin ^{2} x \cdot \sin x}{\sqrt{\cos x}} d x$ $\sin ^{2} x=1-\cos ^{2} x$ $\Rightarrow \int \frac{1-\cos ^{2} x \cdot \sin x}{\sqrt{\cos x}} d x$ Now, Let us assume $\cos x=t$ $\mathrm{d}(\cos x)=\mathrm{dt}$ $-\sin x d x=d t$ Substitute values of $\mat...
Read More →Match the two columns and select
Question: Match the two columns and select the correct among options given Options: a. A-ii, B-i, C-v, D-iii, E-iv b. A-iv, B-i, C-v, D-ii, E-iii c. A-i, B-ii, C-iii, D-iv, E-v d. A-i, B-iii, C-ii, D-iv, E-v Solution: Option (b)A-iv, B-i, C-v, D-ii, E-iii is the answer....
Read More →A gland not associated with the alimentary canal is
Question: A gland not associated with the alimentary canal is a. Pancreas b. Adrenal c. Liver d. Salivary glands Solution: Option (b)Adrenal is the answer....
Read More →Which of the following is not a common
Question: Which of the following is not a common disorder associated with the digestive system? a. Tetanus b. Diarrhoea c. Jaundice d. Dysentery Solution: Option (a)Tetanus is the answer....
Read More →Differentiate
Question: Differentiate $\left(\frac{\sin x-x \cos x}{x \sin x+\cos x}\right)$ Solution: To find: Differentiation of $\frac{(\sin x-x \cos x)}{(x \sin x+\cos x)}$ Formula used: $(i)\left(\frac{u}{v}\right)^{\prime}=\frac{u^{\prime} v-u v^{\prime}}{v^{2}}$ where $v \neq 0$ (Quotient rule) (ii) $\frac{d \sin x}{d x}=\cos x$ (iii) $\frac{d \cos x}{d x}=-\sin x$ (iv) (uv) = uv + uv (Leibnitz or product rule) Let us take $u=(\sin x-x \cos x)$ and $v=(x \sin x+\cos x)$ $u^{\prime}=\frac{d u}{d x}=\fra...
Read More →Hepato-pancreatic duct opens into the duodenum and carries
Question: Hepato-pancreatic duct opens into the duodenum and carries a. Bile b. Pancreatic juice c. Both bile and pancreatic juice d. Saliva Solution: Option (c)Both bile and pancreatic juice is the answer....
Read More →Evaluate the following integrals:
Question: Evaluate the following integrals: $\int \frac{\cos ^{3} x}{\sqrt{\sin x}} d x$ Solution: In this equation, we can manipulate numerator $\cos ^{3} x=\cos ^{2} x \cdot \cos x$ $\therefore$ Now the equation becomes, $\Rightarrow \int \frac{\cos ^{2} x \cdot \cos x}{\sqrt{\sin x}} d x$ $\cos ^{2} x=1-\sin ^{2} x$ $\Rightarrow \int \frac{1-\sin ^{2} x \cdot \cos x}{\sqrt{\sin x}} d x$ Now, Let us assume $\sin x=t$ $d(\sin x)=d t$ $\cos x d x=d t$ Substitute values of $t$ and $d t$ in the ab...
Read More →Which of the following is not true of intestinal villi?
Question: Which of the following is not true of intestinal villi? a. They possess microvilli b. They increase the surface area c. They are supplied with capillaries and the lacteal vessels d. They only participate in digestion of fats Solution: Option (d)They only participate in digestion of fatsis the answer....
Read More →Differentiate
Question: Differentiate $\left(\frac{a x^{2}+b x+c}{p x^{2}+q x+r}\right)$ Solution: To find: Differentiation of $\frac{a x^{2}+b x+c}{p x^{2}+q x+r}$ Formula used: (i) $\left(\frac{u}{v}\right)^{\prime}=\frac{u^{\prime} v-u v^{\prime}}{v^{2}}$ where $v \neq 0$ (Quotient rule) (ii) $\frac{d x^{n}}{d x}=n x^{n-1}$ Let us take $u=\left(a x^{2}+b x+c\right)$ and $v=\left(p x^{2}+q x+r\right)$ $u^{\prime}=\frac{d u}{d x}=\frac{d\left[a x^{2}+b x+c\right]}{d x}=2 a x+b$ $v^{\prime}=\frac{d v}{d x}=\f...
Read More →Name a hormone which
Question: Name a hormone which a. is gaseous b. is responsible for phototropism c. induces femaleness in flowers of cucumber d. is used for killing weeds (dicots) e. induces flowering in long-day plants Solution: a. is gaseous: ethylene b. is responsible for phototropism: auxin c. induces femaleness in flowers of cucumber: ethylene d. is used for killing weeds (dicots): auxins e. induces flowering in long-day plants: Gibberellin...
Read More →Evaluate the following integrals:
Question: Evaluate the following integrals: $\int \frac{\tan x}{\sqrt{\cos x}} d x$ Solution: We know $d(\cos x)=\sin x$, and $\tan$ can be written interms of $\cos$ and $\sin$ $\therefore \tan x=\frac{\sin x}{\cos x}$ $\therefore$ The given equation can be written as $\Rightarrow \int \frac{\sin x}{\cos x \sqrt{\cos x}} d x$ $\Rightarrow \int \frac{\sin x}{\cos ^{3} \backslash^{2} x} d x$ Now assume $\cos x=t$ $d(\cos x)=-d t$ $\sin x d x=-d t$ Substitute values of $\mathrm{t}$ and $\mathrm{dt}...
Read More →It is known that some varieties of wheat are sown
Question: It is known that some varieties of wheat are sown in autumn but are harvested around next mid-summer. a. What could be the probable reason for this? b. What term is used for this promotion of flowering under low temperature? c. Which plant hormone can replace the cold treatment? Solution: (a) When they are planted in autumn, they take their time to germinate and over the winter season. On the spring season, the normal growth resumes and harvested on next summer mid. (b) Promotion of fl...
Read More →Some varieties of wheat are known as spring
Question: Some varieties of wheat are known as spring wheat while others are called winter wheat. The former variety is sown, and planted in spring and is harvested by the end of the same season. However, winter varieties, if planted in spring, fail to flower or produce mature grains within a span of a flowering season. Explain, why? Solution: If planted in spring would normally fail to flower or produce mature grain within a span of a flowering season so they are sown in autumn. Then they germi...
Read More →Differentiate
Question: Differentiate $\frac{x \tan x}{(\sec x+\tan x)}$ Solution: To find: Differentiation of $\frac{x \tan x}{(\sec x+\tan x)}$ Formula used: (i) $\left(\frac{u}{v}\right)^{\prime}=\frac{u^{\prime} v-u v^{\prime}}{v^{2}}$ where $v \neq 0$ (Quotient rule) (ii) $\frac{d \sec x}{d x}=\sec x \tan x$ (iii) $\frac{d \tan x}{d x}=\sec ^{2} x$ (iii) $\frac{d x^{n}}{d x}=n x^{n-1}$ (iv) (uv) = uv + uv (Leibnitz or product rule) Let us take u = (x tanx) and v = (secx + tanx) $u^{\prime}=\frac{d u}{d x...
Read More →Fill in the blanks:
Question: Fill in the blanks: a. Maximum growth is observed in ________ phase. b. Apical dominance is due to ____________ c. ___________ hormone initiate rooting d. Pigment involved in Photoperception in flowering plants is Solution: a. Exponential b. Apical dominance is due to the presence of auxins c. Auxins hormone initiates rooting. d. Pigment involved in Photoperception in flowering plants is phytochrome....
Read More →On germination a seed first produces
Question: On germination a seed first produces shoot with leaves, flowers appear later, a. Why do you think this happens? b. How is this advantageous to the plant? Solution: a. This means that the plant enters the vegetative growth phase. A flowering hormone called florigen is synthesized during this phase. b. The vegetative phase prepares the plants for the reproductive phase so that it can bear structures like fruits and seeds....
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