Tag: bio-chemistry

Questions Related to bio-chemistry

Which of the following animal/s exhibit a holozoic mode of nutrition?

  1. Amoeba

  2. Paramoecium

  3. Honey bee

  4. All of the above


Correct Option: D
Explanation:

Holo-whole and zoic means animals so animal that eats their food completely in the form of a liquid or solid and process it inside the body. The food particle is ingested and then enzymes act on it to digest it. It includes five steps ingestion, digestion, absorption, assimilation and excretion and most of the animals practice this type of nutrition including humans.

So, the correct option is 'All of the above'

Which element is most abundant outside animal cell?

  1. Na

  2. K

  3. I$ _2$

  4. Fe


Correct Option: A
Explanation:

Living systems in general maintain a high intracellular concentration of potassium and low intracellular concentration of sodium. Living systems operate sodium potassium pump for this purpose which actively throws out sodium from the cytoplasm and transports potassium ions from extracellular environment to inside the cytoplasm.

Liver necrosis and muscular dystrophy is measured by the lack of this trace element.

  1. Arsenic

  2. Molybdenum

  3. Zinc

  4. Selenium


Correct Option: D
Explanation:

Epidemiological studies revels that low serum Selenium levels are associated with increased risk of  cardio-vascular diseases, liver necrosis, muscular dystrophy, pancreatic fibrosis, reproductive disorders and various cancers.
Selenium, along with vitamin E, prevents the development of hepatic necrosis and muscular dystrophy.
The good sources of Selenium are organ meat ( liver, kidney) and sea food.

Liver necrosis and muscular dystrophy are caused by the lack of this trace element

  1. Arsenic

  2. Molybdenum

  3. Zinc

  4. Seleneium


Correct Option: D
Explanation:

Epidemiological studies reveals that low serum Selenium levels are associated with increased risk of cardio-vascular diseases, liver necrosis, muscular dystrophy, pancreatic fibrosis, reproductive disorders and various cancers.
Selenium, along with vitamin E, prevents the development of hepatic necrosis and muscular dystrophy.
The good sources of Selenium are organ meat ( liver, kidney) and sea food.

The element which is required by the sea plants is

  1. Cobalt

  2. Zinc

  3. Copper

  4. Sodium


Correct Option: D

Which group of element is not essential for a normal plant?

  1. Potassium, calcium, magnesium

  2. Iron, zinc, manganese, boron

  3. Lead, platinum, iodine

  4. Magnesium, iron, molybdenum


Correct Option: C

Nutrition involving engulfment of whole or parts of a plant or animal in solid or liquid state is known as

  1. Holozoic

  2. Saprozoic

  3. Parasite

  4. Symbiotic


Correct Option: A

Liver necrosis and muscular dystrophy are caused by lack of trace element

  1. Zinc

  2. Arsenic

  3. Selenium

  4. Molybdenum


Correct Option: C

Microphagial nutrition occurs in

  1. Amphioxus

  2. Hydra

  3. Euglena

  4. Paramaecium

  5. Insects


Correct Option: D

In which of the following all three are macronutrients?

  1. Nitrogen, Nickel, Phosphorous

  2. Boron, Zinc, Manganese

  3. Iron, Copper, Molybdenum

  4. Molybdenum, Magnesium, Manganese


Correct Option: A
Explanation:

None of the options is correct. However, in some cases toxic level of Nickel is approached well above the concentration of $1$mg/g as that of macronutrients.