Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A:

NEET-2022 [Microbes-in-Human-Welfare] [class-xii ]

• Clostridium butylicum
• Aspergillus niger
• Streptococcus cerevisiae
• Trichoderma polysporum
Correct Option: D  [ Trichoderma polysporum ]

Remark:

In-situ conservation refers to:

NEET-2022 [Biodiversity-and-Conservation] [class-xii ]

• Conserve only high risk species
• Conserve only endangered species
• Conserve only extinct species
• Protect and conserve the whole ecosystem
Correct Option: D  [ Protect and conserve the whole ecosystem ]

Remark:

Given below are two statements:
Statement I: Restriction endonucleases recognise specific sequence to cut DNA known as palindromic nucleotide sequence.
Statement II: Restriction endonucleases cut the DNA strand a little away from the centre of the palindromic site.
In the light of the above statements, choose the most appropriate answer from the options given below:

NEET-2022 [Biotechnology-Principles-and-Processes] [class-xii ]

• Both Statement I and Statement II are incorrect
• Statement I is correct but Statement II is incorrect
• Statement I is incorrect but Statement II is correct
• Both Statement I and Statement II are correct
Correct Option: D  [ Both Statement I and Statement II are correct ]

Remark:

If '8' Drosophila in a laboratory population of '80' died during a week, the death rate in the population is ___________ individuals per Drosophila per week.

NEET-2022 [Organisms-and-Populations] [class-xii ]

• 10
• 1.0
• zero
• 0.1
Correct Option: D  [ 0.1 ]

Remark:

Detritivores breakdown detritus into smaller particles. This process is called:

NEET-2022 [Ecosystem] [class-xii ]

• Fragmentation
• Humification
• Decomposition
• Catabolism
Correct Option: A  [ Fragmentation ]

Remark:

NEET-2022 [Biological-Classification] [class-xi ]

• Bacteria are exclusively heterotrophic organisms.
• Slime moulds are saprophytic organisms classified under Kingdom Monera.
• Mycoplasma have DNA, Ribosome and cell wall
• Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera.
Correct Option: D  [ Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera. ]

Remark:

Match List-I with List-II.

NEET-2022 [Structural-Organisation-in-Animals] [class-xi ]

• A-I, B-II, C-III, D-IV
• A-II, B-I, C-IV, D-III
• A-III, B-IV, C-II, D-I
• A-IV, B-III, C-I, D-II
Correct Option: D  [ A-IV, B-III, C-I, D-II ]

Remark:

Match List-I with List-II.

NEET-2022 [Biomolecules] [class-xi ]

• A-IV, B-II, C-I, D-III
• A-II, B-IV, C-III, D-I
• A-IV, B-III, C-I, D-II
• A-III, B-II, C-IV, D-I
Correct Option: C  [ A-IV, B-III, C-I, D-II ]

Remark:

Which one of the following statements is correct?

NEET-2022 [Body-Fluids-and-Circulation] [class-xi ]

• The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria
• Blood moves freely from atrium to the ventricle during joint diastole.
• Increased ventricular pressure causes closing of the semilunar valves.
• The atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction
Correct Option: B  [ Blood moves freely from atrium to the ventricle during joint diastole. ]

Remark:

Select the incorrect statement regarding synapses:

NEET-2022 [Neural-Control-and-Coordination] [class-xi ]

• Electrical current can flow directly from one neuron into the other across the electrical synapse.
• Chemical synapses use neurotransmitters
• Impulse transmission across a chemical synapse is always faster than that across an electrical synapse.
• The membranes of presynaptic and postsynaptic neurons are in close proximity in an electrical synapse.
Correct Option: C  [ Impulse transmission across a chemical synapse is always faster than that across an electrical synapse. ]

Remark: