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What is activated sludge? How it is different from primary sludge?
What is mycorrhiza? How it is useful to plants?
What is the key difference between primary and secondary sewage treatment?
What is the key difference between primary and secondary sewage treatment?
What is activated sludge? How it is different from primary sludge?
What is activated sludge? How it is different from primary sludge?
What is sewage? In which way can sewage be harmful to us?
Give examples to prove that microbes release gases during metabolism.
Give examples to prove that microbes release gases during metabolism.
Puccinia forms uredia and (a) telia on wheat leaves (b) aecia on barberry leaves (c) pycnia...
Assume that a drug is developed that prevents the prometaphase stage of mitosis from occurring but...
You are adding 2 μL of a 10X restriction buffer to a reaction that will total...
In which one of the following enzymes, is copper necessarily associated as an activator? (a) carbonic...
List two essential roles of ribosome during translation. (NCERT)
The 10% energy transfer law of food chain was given by (a) Lindemann (b) Tansley (c)...
The ‘niche’ of a species is meant for (a) habitat and specific functions of a species...
The true statement about ‘green-house effect’ is that it is (a) caused by combination of many...
4. Explain chemically and functionally the difference between saturated and unsaturated fats.
Which of the following is the main factor of desertification? (a) over-grazing (b) tourism (c) irrigated...
Jackie wants to transfer 380 µL from beaker A to beaker B. She picks a blue...
The true statement about ‘green-house effect’ is that it is (a) caused by combination of many...
Which of the following is the main factor of desertification? (a) over-grazing (b) tourism (c) irrigated...
Draw a general figure showing this explanation as to a plants life cycle. Describe the various...
Pyramid of numbers in a grassland/tree ecosystem (a) always inverted (b) always upright (c) both (a)...
Pyramid of numbers in a grassland/tree ecosystem (a) always inverted (b) always upright (c) both (a)...
Deforestation will decrease (a) soil erosion (c) soil fertility (b) land slides (d) rainfall.
Hybrid inviability in Drosophila melanogaster/D. simulans hybrids results from incompatible interactions between two genes, Hmr and...
The relation between algae and fungi in lichen is (a) symbiosis (b) parasitism (c) commenalism (d)...
Green house effect is warming due to (a) infra-red rays reaching earth (b) moisture layer in...
Soil conservation is (a) conversion of sterile soil into fertile one (b) aeration of soil (c)...
Competition for light, nutrients and space is most severe between (a) closely related organism growing in...
A mutually beneficial association necessary for survival of both partners is (a) mutualism/symbiosis (b) commensalism (c)...
To extract DNA from a tissue sample, you need to prepare 500 ml extraction buffer. You...
A fertile agricultural soil appears deep coloured at the surface as compared to soil one metre...
1. For each of the following organisms, suggest which functional response (Type 1, 2, or 3)...
Pick up the correct food chain (a) grass —> chamelion —> insect —> bird (b) grass...
Food chain in which microorganisms breakdown the food formed by primary producers is (a) parasitic food...
Food chain in which microorganisms breakdown the food formed by primary producers is (a) parasitic food...
Deep black soil is productive due to high proportion of (a) sand and zinc (b) gravel...
Renewable source of energy is (a) biomass (b) coal (c) petroleum (d) kerosene.
A non-renewable resource is (a) nonrenewable nonconventional energy source (b) nonrenewable conventional energy source (c) renewable...
Pyramid of numbers in a grassland/tree ecosystem (a) always inverted (b) always upright (c) both (a)...
Select the level of structure that brings Phe 106 into contact with each of the residues...
For this assignment you must use your knowledge of the scientific method to design your own...
1. draw both the double stranded DNA molecules after replication has occured. show both the parent...
Which of the following parts of a neuron receives and processes information
What is the cost-benefit relationship regarding sewage treatment as a strategy to fight water pollution?
What environmental damage are caused by mercury pollution? What are the main sources of mercury pollution?
What environmental damage are caused by mercury pollution? What are the main sources of mercury pollution?
What is the cost-benefit relationship regarding sewage treatment as a strategy to fight water pollution?
How different is the growth of a viral population according to its biotic potential from the...
How different is the growth of a viral population according to its biotic potential from the...
How different is the growth of a viral population according to its biotic potential from the...
How do populations of predators and prey vary in predatism?
How do populations of predators and prey vary in predatism?
How do populations of predators and prey vary in predatism?
How do biodiversity, the total number of living organisms and biomass vary during ecological succession?
What is the typical shape of a population growth curve? How can biotic potential be represented...
How can a large amount of biological diversity protect an ecosystem from environmental damage? Why are...
Despite having a large amount of biodiversity, why is the Amazon Rainforest facing the risk of...
Despite having a large amount of biodiversity, why is the Amazon Rainforest facing the risk of...
How can a large amount of biological diversity protect an ecosystem from environmental damage? Why are...
What is the importance of water, carbon and nitrogen for living organisms?
What is the importance of water, carbon and nitrogen for living organisms?
Which one of the following is not correctly matched? (a) Glossina palpalis – Sleeping sickness (b)...
Reason of lung cancer is (a) coal mining (b) calcium fluoride (c) cement factory (d) bauxite...
Cancerous cells can easily be destroyed by radiations due to (a) rapid cell division (b) lack...
Cancerous cells can easily be destroyed by radiations due to (a) rapid cell division (b) lack...
Interferons are synthesized in response to (a) mycoplasma (b) bacteria (c) viruses (d) fungi.
Human immuno deficiency virus (HIV) has a protein coat and a genetic material which is (a)...
Botulism caused by Clostridium botulinum affects the (a) lymph glands (b) central nervous system (c) spleen...
Which of the following causes plague? (a) Trichinella spiralis (b) Salmonella typhimurum (c) Yersinia pest is...
Rickettsia form a group under (a) viruses (b) bacteria (c) fungi (d) a category between viruses...
In a man, abducens nerve is injured. Which one of the following functions will be affected?...
Which of the following is regarded as a unit of nervous tissue? (a) neurons (b) myelin...
Afferent nerve fibres carry impulses from (a) effector organs to CNS (b) receptors to CNS (c)...
Propose a pathway(s) to explain how the ectoderm and the notochord block the ability of the...
How do you feel about eating cloned animal?
Define "funny" sodium channel
plateau vs twitch in skeletal muscle
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