Biology · General Awareness

Human Health and Nutrition

1,275 Questions

Human Health and Nutrition focuses on dietary requirements, daily intake recommendations, and the physiological effects of various nutrients. It includes topics such as water consumption, fiber intake, and allergies. These questions are vital for the biology and general science sections of multiple competitive exams.

Recommended Daily IntakeMacronutrient ContentVitamin RequirementsFood AllergiesDigestive HealthHydration Guidelines

Human Health and Nutrition Questions

Multiple choice bio-chemistry human body and organ system role of blood in transport function of blood blood and lymph body fluid

Normal blood glucose level is

  1. 50-80 mg/I00 ml

  2. 50-100 m/1000 ml

  3. 80-100 mg/100 ml

  4. 80-300 mg/1000 ml.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Normal fasting blood glucose is 80-100 mg/100 ml (70-100 mg/dL is the modern standard range). Option A is too low (hypoglycemic range), option B has wrong units, and option D's upper limit is hyperglycemic.

Multiple choice bio-chemistry digestive system of human digestive system- glands mouth and buccal cavity digestive glands

With reference to a normal human being, which one of the following statements is not correct?

  1. Human saliva is slightly acidic
  2. An adult human may secrete $1$ to $1.5$ litres of saliva per day

  3. Saliva is secreted by six pairs of salivary glands in human beings

  4. The salivary enzymes(ptyalin) breaks down cooked starch into maltose
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Human saliva is secreted by three major pairs of salivary glands, namely the parotid, submandibular, and sublingual glands, making it three pairs rather than six pairs in total. The other statements are correct, as human saliva is slightly acidic, adults secrete about 1 to 1.5 liters per day, and ptyalin digests cooked starch into maltose.

Multiple choice bio-chemistry digestive system of human digestive system- glands mouth and buccal cavity digestive glands

Amount of saliva secreted daily in humans is

  1. 250 ml

  2. 500 ml

  3. 100 ml

  4. 1000 ml
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There are three major parts of salivary glands that secrete saliva with the digestive enzyme such as parotid, submandibular and sublingual glands. Normally secretion of saliva is constant, regardless of the presence of food in the mouth. The amount of saliva secreted in 24 hours usually amounts from 1 liter to 1.5 litres. 

Therefore, the correct answer is option D.

Multiple choice bio-chemistry digestive system of human digestive system- glands mouth and buccal cavity digestive glands

Which is not correct

  1. Human saliva is near neutral

  2. An adult secretes 1.0 1.5 l of saliva per day

  3. Saliva is secreted by six pairs of glands

  4. Ptyalin breaks down cooked starch into maltose
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are three pairs of salivary glands (parotid, submandibular, and sublingual), not six pairs. Therefore, the statement that there are six pairs is incorrect.

Multiple choice bio-chemistry digestive system of human digestive system- glands mouth and buccal cavity digestive glands

About how much saliva does a person produce each day?

  1. 100 ml

  2. 250 ml

  3. 500 ml

  4. 1500 ml
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Humans produce between one-fifth and one-third of a gallon (0.75 to 1.5 liters) of saliva every day. However, saliva production mostly takes place while a person is awake. During sleep, saliva production drops to almost nothing. Most of the saliva comes from the glands at the bottom of the mouth, and the rest comes primarily from the parotid glands, near the top back of the mouth.

Multiple choice biology natural resources and their conservation water resources and conservation receding water table water conservation and irrigation

The amount of water recommended by the United Nations for drinking, washing, cooking and maintaining proper hygiene is a minimum of ........................ per person per day. This amount is about ................. buckets of water per person per day.

  1. 50 litres, two and a half

  2. 25 litres, two and a half

  3. 50 litres, one and a half

  4. 75 litres, three and a half
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The amount of water recommended by the United Nations for drinking, washing, cooking and maintaining proper hygiene is a minimum of 50 litres per person per day. This amount is about  two and a half buckets of water per person per day.

Multiple choice carbon tetrachloride ddt preparation of haloalkanes halogen derivatives

DDT concentration in the human body is?

  1. 0.3-0.7 ppm

  2. 1.3-3.1 ppm

  3. 13-31 ppm

  4. 30-70 ppm.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Dichlorodiphenyltrichloroethane, commonly known as DDT, is a colorless and almost odorless crystalline chemical compound, an organochlorine, originally developed as an insecticide. Now the human body resides about high levels of DDT which is highly toxic to their health.
So the correct option is '13-31ppm'.
Multiple choice political science on equality equality efforts of the government in social circle and its effects on people government in social sector

Approximately, for drinking even 4 litres of water is enough for a person for one day.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Four litres water a day is recommended daily to be consumed by an adult person to keep the body hydrated and kidney well functioned. The loss of body fluids in form of urine, sweats, fecal discharge is recovered by drinking water. One should adopt the habit of drinking at least four litres water a day for a healthy body.

Multiple choice chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

The approx. percentage of water in human body is:

  1. 80 %

  2. 65 %

  3. 70 %

  4. 40 %
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The approx. percentage of water human body is $70\%$. The average adult human body is $50-65\%$ water, averaging around $57-60\%$. The percentage of water in infants is much higher, typically around $75-78\%$ water, dropping to $65\%$ by one year of age. Body composition varies according to gender and fitness level because fatty tissue contains less water than lean tissue. 

Multiple choice biology animals in daily life introduction to reproduction poultry farming food from animals

Carefully read the following information to answer the question -


An egg farmer is experimenting with different feed rations with the aim of increasing his production whilst reducing the cost of the feed per egg produced. The data from the two feeding experiments are given below.

Experiment 1

Protein concentration in feed (%) 10 11 12 13 14 15 16
Total vitamin level (mg/kg) 100 100 100 100 100 100 100
Cost of feed ration per 100 hens per day 6.00 7.00 7.50 8.00 8.50 8.75 9.00
Number of eggs per 100 hens per day 70 70 75 80 85 80 80

Experiment 2

Protein concentration in feed (%) 14 14 14 14 14 14 14
Total vitamin level (mg/kg) 50 75 100 125 150 175 200
cost of feed ration per 100 hens per day 8.00 8.25 8.50 8.75 9.00 9.25 9.50
Number of eggs per 100 hens per day 70 80 85 90 95 95 95


Which feed composition gives the least cost per egg produced?

  1. Protein concentration (%) - 16; Total vitamin level (mg/kg) - 100

  2. Protein concentration (%) - 14; Total vitamin level (mg/kg) - 50

  3. Protein concentration (%) - 14; Total vitamin level (mg/kg) - 100

  4. Protein concentration (%) - 14; Total vitamin level (mg/kg) - 150
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In Experiment 1-At protein concentration 16% vitamin level 100, the cost of feed is 9.00 and the number of egg produced is 80 per 100 hens

In experiment 2 - At protein concentration 14%, vitamin level 150, the cost of feed is 9.00 and the number of eggs produced is 95, an increase of 15 per 100 hens.
So, the correct answer is 'Protein concentration (%) - 14; Total vitamin level (mg/kg) - 150'

Multiple choice biology animals in daily life introduction to reproduction poultry farming food from animals

Carefully read the following information to answer question


An egg farmer is experimenting with different feed rations with the aim of increasing his production whilst reducing the cost of the feed per egg produced. The data from the two feeding experiments are given below.

Experiment 1

Protein concentration in feed (%) 10 11 12 13 14 15 16
Total vitamin level (mg/kg) 100 100 100 100 100 100 100
Cost of feed ration per 100 hens per day 6.00 7.00 7.50 8.00 8.50 8.75 9.00
Number of eggs per 100 hens per day 70 70 75 80 85 80 80

Experiment 2

Protein concentration in feed (%) 14 14 14 14 14 14 14
Total vitamin level (mg/kg) 50 75 100 125 150 175 200
cost of feed ration per 100 hens per day 8.00 8.25 8.50 8.75 9.00 9.25 9.50
Number of eggs per 100 hens per day 70 80 85 90 95 95 95


What are the independent variables in each of the two experiments?

  1. Experiment 1 - Maximum daily egg production; Experiment 2 - Maximum daily egg production

  2. Experiment 1 - Protein concentration in the feed; Experiment 2 - Total vitamin level in the feed

  3. Experiment 1 - Total vitamin level in the feed; Experiment 2 - Protein concentration in feed

  4. Experiment 1 - Cost of feed ration per egg produced; Experiment 2 -Cost of feed ration per egg produced
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In experiment 1 the protein concentration is controlled or changed. So as to check the effect on cost of feed ration and number of eggs produced. Therefore it an independent variable

In experiment 2 total vitamin level in the feed is controlled or changed. So as to check the effect on cost of feed ration and number of egg produced. Therefore it is an independent variable.
So, the correct answer is 'Experiment 1 - Protein concentration in the feed; Experiment 2 - Total vitamin level in the feed'