Practice free Zoology NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
The figure below illustrates the basic structure of a membrane. Use the figure to answer the question below
Which of the following molecules makes up the basic structure of a cell membrane?
Basic structure of a cell membrane is made up of a bilayer of phospholipids.
the packaging of chromosome at higher levels require a set of proteins that ae collectively referred to as
fact
choose the correct match given below.
| Column 1 | Column 2 |
| P. mg 2+ ion | rubisco |
| Q. zn 2+ ion | pepcase |
| R. Mo2+ ion | alcohol dehydrogenase |
| S. phosphorous | chlorophyll |
Zn2+ is an activator of alcohol dehydrogenase
mo is an activator of nitrogenase
mg is present in chrophyll
P is a constituent of ATP
Which animal is capable of obtaining water byoxidation of lipid.
The kangaroo rat is well known for its ability to obtain water by oxidizing lipids in its diet. This metabolic water helps the animal survive in arid environments where free water is scarce.
Name the animals with freshwater habit in which (i) endosmosis is possible (ii) Excess water in removed bygreen glands (iii) Green glands removes water in the from of urine
Crustaceans like Astacus (a freshwater crayfish) have specialized excretory organs known as green glands, which help in osmoregulation by removing excess water in the form of urine. Freshwater animals need to constantly manage the influx of water due to endosmosis.
If marine fish is kept in fresh water, will it survive
Marine fish are adapted to live in saltwater environments, where they regulate their internal salt concentration to match the surrounding water. If a marine fish is placed in fresh water, it cannot adapt to the sudden change in salinity and will suffer from osmotic shock, leading to its death. Therefore, the correct answer is 'No, Because it can not adapt.'
In which of the following aquatic ecosystems habitat fluid (liquid) is very concetrated compared to body fluid
Marine habitats have a high concentration of salts compared to the body fluids of marine organisms. This creates a hypertonic environment, where the concentration of solutes in the habitat fluid is higher than in the body fluid of the organisms. Therefore, marine organisms often have to regulate their internal osmotic balance to survive.
What true for the following statements ? Statement X : During evolution many species, by continuous development of their internal environment, made their physiological processes more efficient. Statement Y: Organisms show adaptations in order to survive in the environment
Both statements X and Y are true. During evolution, species have indeed developed their internal environments to make physiological processes more efficient (Statement X). Additionally, organisms show various adaptations to survive and thrive in their specific environments (Statement Y). These adaptations can be structural, physiological, or behavioral.
In which of the following organism water is stored in its transformed from and not water as such ?
Which is true for the following statements ? Statement X : Cursorial animals have spindle shaped body Statement Y: Because of narrow head they can prepare burrow properly
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