Tag: biology

Questions Related to biology

Urine is dark yellow color in hepatitis patients.

biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

  1. True

  2. False

  3. Ambiguous

  4. Data insufficient

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Correct Option: A
Explanation:

Hepatitis causes liver failure or liver cancer. Due to this the functioning of liver disturbs drastically. This results in jaundice being one of the symptoms of hepatitis. Thus excretes dark yellow colored urine.

Diuretics are substances that help eliminate water from the body. Few volunteers were taken into the study, all of which had same mass. They drank nothing for eight hours before the test and urinated just prior to ingesting the test substance. The three substances (water, caffeine, and salt) were tested on three separate days. The results are shown in the tables below.
Table 1

Volunteer Amount of caffeine ingested(in 100 ml water) Volume of urine collected after 1 hour
A 50 mg 302 ml
B 100 mg 492 ml
C 150 mg 667 ml
D 200 mg 863 ml


Table 2

Volunteer Amount of sodium chloride ingested(in 100 ml water) Volume of urine collected after 1 hour
A 0.9 g 201 ml
B 1.8 g 162 ml
C 2.7 g 125 ml
D 3.6 g 82 ml

Table 3

Volunteer Volume of water ingested Volume of urine collected after 1 hour
A 100 ml 230 ml
B 200 ml 240 ml
C 300 ml 252 ml
D 400 ml 263 ml


Which of the following substances could be classified as a diuretic?

biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

  1. Caffeine

  2. Sodium

  3. Water

  4. Both A and B

  5. Both A and C

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Correct Option: E
Explanation:

Diuretics are substances that cause an increase in the production of urine. In the given table 1, as the concentration of caffeine ingestion increases, volume of urine increases. Same results can be made from table 3 that is the volume of urine collected increases with the volume of water ingested but In table 2 as the concentration of sodium chloride ingested, the volume of urine decreases gradually. So, water and caffeine can be classified as a diuretic. Thus, the correct answer is 'Both A and C.'

Which of the following will not lead to a diuresis ?

biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

  1. Excessive Sweating

  2. Deficiency of ADH

  3. Deficiency of insulin

  4. Excessive of water intake

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Correct Option: A
Explanation:
Diuresis is nothing but the excessive production urine in a person’s body. it could be due to excessive water intake or due to the deficiency of ADH. Low levels of insulin also trigger diuresis. However, excessive sweating acts as a counteracting measure and decreases the urine production and release from the body.
So, the correct answer is 'Excessive Sweating'.

Diuretics are substances that help eliminate water from the body. Few volunteers were taken into the study, all of which had same mass. They drank nothing for eight hours before the test and urinated just prior to ingesting the test substance. The three substances (water, caffeine, and salt) were tested on three separate days. The results are shown in the tables below.
Table-1

Volunteer Amount caffeine ingested(in 100 ml water) Volume urine collected after 1 hour
A 50 mg 302 ml
B 100 mg 492 ml
C 150 mg 667 ml
D 200 mg 863 ml

Table-2

Volunteer Amount sodium chloride ingested(in 100 ml water)    Volume urine collected after 1 hour
A 0.9 g 201 ml
B 1.8 g 162 ml
C 2.7 g 125 ml
D 3.6 g 82 ml

Table-3

Volunteer Volume water ingested Volume urine collected after 1 hour
A 100 ml 230 ml
B 200 ml 240 ml
C 300 ml 252 ml
D 400 ml 263 ml


The reason of ingesting the plain water was to

biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

  1. Rehydrate the volunteers

  2. Dissolve the substances

  3. Act as a control

  4. Flush out the kidneys

  5. Act as a positive test substance

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Correct Option: C
Explanation:

Because the caffeine and the sodium chloride were dissolved in water, plain water was consumed as a control to make sure the effects seen were due to the added substances and not the water. Thus, the correct answer is option C.

Diuretics are substances that help eliminate water from the body. Few volunteers were taken into the study, all of which had same mass. They drank nothing for eight hours before the test and urinated just prior to ingesting the test substance. The three substances (water, caffeine, and salt) were tested on three separate days. The results are shown in the tables below.
Table-1

Volunteer Amount of caffeine ingested(in 100 ml water)    Volume of urine collected after 1 hour
A 50 mg 302 ml
B 100 mg 492 ml
C 150 mg 667 ml
D 200 mg 863 ml

Table-2

Volunteer Amount of sodium chloride ingested(in 100 ml water) Volume of urine collected after 1 hour
A 0.9 g 201 ml
B 1.8 g 162 ml
C 2.7 g 125 ml
D 3.6 g 82 ml

Table-3

Volunteer Volume of urine collected after 1 hour Volume of urine collected after 1 hour
A 100 ml 230 ml
B 200 ml 240 ml
C 300 ml 252 ml
D 400 ml 263 ml


If a volunteer had ingest 4.5 g sodium chloride dissolved in 100 ml water, what would had be the amount of urine volume collected after one hour?

biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

  1. 20 ml

  2. 30 ml

  3. 40 ml

  4. 50 ml

  5. 60 ml

Show answer
Correct Option: C
Explanation:
From the table, as the increase in sodium chloride of 0.9 g results in the decrease in urine volume of approximately 40 ml. When 3.6 g sodium chloride is ingested, 82 ml urine is produced. Thus on ingesting 4.5 g sodium chloride, the expected urine volume would be 40 ml less than 82 ml i.e., 42 ml.
Therefore, the correct answer is option C.

Find the odd one out, with respect to X-linkage.

biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

  1. Haemophilia

  2. Myopia

  3. Nephritis

  4. Night blindness

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Correct Option: C

Plants that grows in saline water lodged habitat are called

biology human influences on ecosystems crop yield improvement food supply crop improvement methods and organisations

  1. xerophytes

  2. halophytes

  3. mangroves

  4. mesophytes

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Correct Option: C

The process of successful establishment of the species in a new area is called

biology human influences on ecosystems crop yield improvement food supply crop improvement methods and organisations

  1. sere

  2. climax

  3. invasion

  4. ecesis

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Correct Option: D

How many types of habitats are there in a biosphere?

biology human influences on ecosystems crop yield improvement food supply crop improvement methods and organisations

  1. 4

  2. 2

  3. 3

  4. 6

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Correct Option: A

During seed germination its stored food is mobilized by?

biology life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

  1. Ethylene

  2. Cytokinin

  3. Abscisic acid

  4. Gibberellin

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Correct Option: D
Explanation:

Gibberellins invigorate the combination of α-amylase and proteases compound in germinating grains of oats. They are associated with the transformation of starch into sugar. The proteases convert an inert β-amylase to the dynamic frame. The dynamic β-amylase and α-amylase together process starch to glucose which is prepared to meet the metabolic requests of developing life. 

So, the correct option is 'Gibberellin'.