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Life Processes

10th Class - CBSE - Biology - 2625 Questions - 0 Concepts

Important Questions

Q1 Single Correct Hard
The wall of urinary bladder has a thick layer of smooth muscle called
  • A. Dartos
  • B. Detrusor
  • C. Deltoid
  • D. Depressor

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1 Verified Answer | Published on 07th 09, 2020

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Q2 Single Correct Hard
Match the columns.
List 1List 2
A.Capillaries1.Carries digested fat 
B.Lymph2.Oxygenated blood
C.Left ventricle3.Deoxygenated blood
D.Pulmonary artery4.RBC
E.Haemoglobin5.Exchange of materials
F.Birds6.Three chambered heart
G.Fishes7.Four chambered heart
H.Amphibians8.Two chambered heart
  • A. H- 7, G- 8, F- 6, E- 5, D- 3, C- 4, B- 1, A- 2
  • B. H- 6, G- 8, F- 7, E- 5, D- 3, C- 4, B- 1, A- 2
  • C. H- 6, G- 8, F- 7, E- 4, D- 2, C- 2, B- 1, A- 5
  • D. H- 6, G- 8, F- 7, E- 4, D- 3, C- 2, B- 1, A- 5

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1 Verified Answer | Published on 07th 09, 2020

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Q3 Single Correct Hard
The given table shows the result of intravenous injection of substances to determine the effect of each substance on normal body variables. An appropriate amount of time was allowed between injections and the substances did not interfere with one another. 
Variable
Baseline values
Values after injecting substance A
Values after injecting substance B
Values after injecting substance C
Values after injecting substance D
Serum $${ Ca }^{ ++ }$$
2.3mmol/L
2.3mmol/L
2.3mmol/L
3.0mmol/L
2.3mmol/L
Serum $${ Na }^{ + }$$
135mmol/L
135mmol/L
135mmol/L
136mmol/L
135mmol/L
Serum glucose
5.6mmol/L
3.3mmol/L
5.6mmol/L7.4mmol/L5.6mmol/L
The normal release of substance D will be
  • A. Soon after a meal.
  • B. When blood pressure is low.
  • C. Between meals.
  • D. When there has been limited intake of dietary calcium.
  • E. When dietary calcium is in excess.

Asked in: Biology - Life Processes


1 Verified Answer | Published on 07th 09, 2020

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Q4 Single Correct Hard
Select the wrong statement(s) about respiration.
a) It consists of breathing, oxidation of food and energy storage in the form of ATP.
b) Cytoplasm and mitochondria are necessary for the completion of aerobic respiration.
c) Complete oxidation of food into ethanol or lactic acids, $$CO_2$$ and few molecules of ATP are seen in anaerobic respiration.
d) In the older portions of woody plants, the gaseous exchange takes place through stomatal apertures.
Statements that are entirely wrong are
  • A. a) and b)
  • B. b) and c)
  • C. a) and d)
  • D. c) and d)

Asked in: Biology - Life Processes


1 Verified Answer | Published on 07th 09, 2020

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Q5 Single Correct Hard
Which of the following factor(s) increase blood pressure?
  • A. Increase of cardiac output
  • B. Constriction of blood vessel
  • C. Increase of blood volume
  • D. All of the above

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Q6 Subjective Hard
Describe histological structure of artery.

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Q7 Single Correct Hard
In peritoneal dialysis
  • A. the blood is removed from the body and a natural filter is used
  • B. the blood is not removed from the body and an artificial filter is used
  • C. the blood is removed from the body and an artifcial filter is used.
  • D. the blood is not removed from the body and a natural filter is used

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Q8 Single Correct Hard
Select the correct option:
Study the given figure and select the incorrect option regarding this.
  • A. The figure represents chemiosmotic ATP synthesis by oxysomes where X is the mitochondrial matrix and Y is the inner mitochondrial membrane.
  • B. An enzyme required for ATP synthesis is ATP synthase, considered to be the complex-V of ETS.
  • C. The figure represents oxidative phosphorylation which is the synthesis of energy-rich ATP molecules with the help of energy liberated during oxidation of reduced co-enzymes (NADH,$${FADH}_{2}$$) produced in respiration.
  • D. ATP synthase becomes active only when there is a proton gradient having a higher concentration of protons $$({H}^{+})$$ on the inner side ($${F}_{1}$$ side) as compared to the outer side ($${F}_{0}$$ side).

Asked in: Biology - Life Processes


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Q9 Single Correct Hard
Which of the following options does not hold good regarding anaerobic respiration of fermentation?
  • A. Partial breakdown of glucose occurs
  • B. Net gain of only 2 ATP molecules
  • C. None of these
  • D. Occurs inside the mitochondria

Asked in: Biology - Life Processes


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Q10 Single Correct Hard
How many additional ATP are used during synthesis of two molecules of hexose sugar in maize than tomato?
  • A. $$36$$
  • B. $$24$$
  • C. $$8$$
  • D. $$12$$

Asked in: Biology - Life Processes


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Questions 122475
Subjects 10
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