Tag: evs

Quizzes (439) Questions (4580)

Questions Related to evs

Multiple choice evs nutritious food minerals and vitamins nutrition and diet role of various nutrients

Main difference between brown fat and white fat is that the cells of brown fat

  1. Are multicoloured

  2. Have more mitochondria

  3. Are polygonal in shape

  4. All the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Brown fat cells are specialized for thermogenesis and contain a high density of mitochondria, which give the tissue its characteristic brown color. White fat cells primarily store energy and have fewer mitochondria.

Multiple choice evs nutritious food minerals and vitamins nutrition and diet role of various nutrients

The most abundant lipid in the cell membrane is:-

  1. Cutin

  2. Phospholipid

  3. Glycolipid

  4. steroid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • The most abundant lipid present in the cell membrane is phospholipids.
  • The cell membrane is called lipid bilayer as it is a double layer membrane made up of phospholipids. 
  • Phospholipids consist of a polar head group and non-polar fatty acid tails. 
  • The arrangement of these phospholipids in the cell membrane makes the cell membrane permeable.
  • The correct answer is OPTION B.
Multiple choice evs nutritious food minerals and vitamins nutrition and diet role of various nutrients

Quasi-fluid nature of membrane is due to

  1. Phospholipid

  2. Integral protein

  3. Peripheral protein

  4. Sugar moiety
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The presence of Quasi-fluid nature of cell membrane is due to Phospholipids such as cholesterol moieties that impart fluidity.

It allows lateral movement of protein moieties throughout the lipid bilayer.
So, the correct option is 'Phospholipid'.

Multiple choice evs nutritious food minerals and vitamins nutrition and diet role of various nutrients

A pound of butter contains more usable energy than a
pound of sugar for a human because

  1. Sugar contains much more water than butter

  2. A fat molecule has more carbon-hydrogen bonds than a

    sugar molecule

  3. The butter is an animal product, where as the sugar is a

    Plant Product

  4. There is much more waste in digestion and absorption

    of sugar than of butter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A pound of butter contains more usable energy than a pound of sugar for a human because a fat molecule has more carbon-hydrogen bonds than a sugar molecule. Butter contains fat molecules and sugar contains carbohydrates. Fat molecule have low ratio of oxygen and hydrogen comparison to carbohydrates and they have more carbon-hydrogen bonds than carbohydrates.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

Which of the following statements is not correct?

  1. The length of human hair changes as the relative humidity changes.

  2. During the winter, low relative humidity can irritate the mucus membranes in the nose and throat.

  3. The relative humidity is a measure of the air's actual water vapor content.

  4. A change in the air temperature can change the relative humidity.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Relative humidity is defined as the ratio of the actual water vapor content to the maximum possible water vapor content at a given temperature. It is not a direct measure of the actual vapor content itself, which is defined by absolute humidity or vapor pressure.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

The relative humidity is often near 100 percent in the Polar Regions.

  1. True

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

In Polar Regions, the air is extremely cold, which significantly lowers the air's capacity to hold water vapor. Consequently, even small amounts of moisture result in high relative humidity, often reaching saturation levels near 100 percent.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

If the air temperature increased, with no addition or removal of water vapor, the actual vapor pressure would:

  1. Increase

  2. Decrease

  3. Stay the same

  4. Become greater than the saturation vapor pressure
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Actual vapor pressure is a measure of the amount of water vapor in the air. If the temperature increases but no water vapor is added or removed, the amount of water vapor remains constant, and thus the actual vapor pressure stays the same.

Multiple choice evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

The unit of pressure most commonly found on a surface weather map is:

  1. Inches of mercury (Hg)

  2. Millibars or hectopascals

  3. Pounds per square inch

  4. Millimeters of mercury (Hg)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Meteorologists use millibars (mb) or hectopascals (hPa) as the standard units for atmospheric pressure on surface weather maps. These units are preferred for their consistency in scientific calculations.