MCQs Preparation

The branch of Biology which deals with the use of data and techniques of engineering & technology concerning living organisms is:

A. Human Biology
B. Environmental Biology
C. Genetics
D. Bio-technology

D. Bio-technology

Bio-technology is the branch of biology that deals with the use of data and techniques of engineering and technology concerning living organisms. This field combines the principles of biology and technology to develop new products and processes that have practical applications in medicine, agriculture, industry, and environmental science. Bio-technology encompasses a wide range of techniques, including genetic engineering, recombinant DNA technology, bioremediation, and tissue engineering.

A. Human Biology is the study of the structure, function, and development of the human body and how it responds to its environment.

B. Environmental Biology is the study of the relationship between living organisms and their environment, including the effects of human activities on the natural world.

C. Genetics is the study of inheritance, including how traits are passed from one generation to the next and how genetic information is stored, expressed, and regulated in cells.

The branch of Biology which deals with the use of data and techniques of engineering & technology concerning living organisms is: Read More »

The Study of organisms inhabiting the sea and Ocean and the physical and chemical characteristics of their environment is:

A. Social Biology
B. Marine Biology
C. Environmental Biology
D. Fresh Water Biology

B. Marine Biology

Marine Biology is the study of organisms inhabiting the sea and ocean and the physical and chemical characteristics of their environment. This field encompasses a wide range of topics, including the evolution, behavior, and ecology of marine organisms, the role of marine ecosystems in the biosphere, and the impacts of human activities on the marine environment. Marine biologists may study a wide range of organisms, from tiny plankton to massive whales, and work to understand their relationships with each other and with their environment.

A. Social Biology is not a recognized field in biology.

C. Environmental Biology is the study of the relationship between living organisms and their environment, including the effects of human activities on the natural world.

D. Freshwater Biology is the study of freshwater ecosystems and the organisms that inhabit them, including rivers, lakes, and wetlands.

The Study of organisms inhabiting the sea and Ocean and the physical and chemical characteristics of their environment is: Read More »

Human blood is an example of__________?

A. Organelle
B. Tissues
C. Organic compound
D. Inorganic compounds

B. Tissues

Human blood is an example of tissue. Tissues are groups of similar cells that perform a specific function and are found in animals and plants. There are four basic types of tissue in the human body: epithelial, connective, muscle, and nervous. Blood is a type of connective tissue that is made up of cells suspended in a liquid matrix, or plasma. The cells in blood include red blood cells, which carry oxygen to the body’s tissues, white blood cells, which help to fight infections, and platelets, which are involved in blood clotting.

A. Organelles are tiny cellular structures that perform specific functions within a cell.

C. Organic compounds are compounds that contain carbon and are found in living organisms.

D. Inorganic compounds are compounds that do not contain carbon and are not found in living organisms.

Human blood is an example of__________? Read More »

The molecules of living matter that provide building blocks are mostly based on:

A. Carbon
B. Nitrogen
C. Hydrogen
D. Ammonia

A. Carbon

The molecules of living matter that provide building blocks are mostly based on carbon. Carbon is unique among the elements in its ability to form a wide range of complex compounds, including the large, complex molecules that make up the structural components of living organisms. These molecules, called organic molecules, include sugars, amino acids, nucleotides, and fatty acids, among others. Carbon-based molecules can bond with each other in various ways to form even larger, more complex structures such as proteins, carbohydrates, and DNA.

B. Nitrogen is an important component of many organic molecules, including amino acids, nucleotides, and DNA.

C. Hydrogen is a component of many organic molecules, including sugars, amino acids, and fatty acids.

D. Ammonia is not a major building block of living matter. It is a nitrogen-containing compound that is toxic to most living organisms in high concentrations.

The molecules of living matter that provide building blocks are mostly based on: Read More »

Kingdom Protoctista includes____________?

A. Fungi
B. Prokaryotes
C. Protists
D. Piantae

C. Protists

The Kingdom Protoctista includes a diverse group of single-celled organisms called protists. Protists are eukaryotic organisms, meaning they have a nucleus and other membrane-bound organelles, but they are not animals, plants, or fungi. The kingdom Protoctista includes a wide range of organisms, including algae, amoebas, and euglena. Protists play important roles in various ecosystems, serving as primary producers in aquatic environments and as decomposers that break down dead organic matter.

A. Fungi are a separate kingdom of eukaryotic organisms that are distinct from protists. Fungi are heterotrophic, meaning they obtain their nutrients by absorbing them from other organisms, and include mushrooms, yeasts, and molds.

B. Prokaryotes are single-celled organisms that lack a nucleus and other membrane-bound organelles. Prokaryotes include bacteria and archaea.

D. Plantae is the kingdom that includes all plants, from the simplest mosses to the most complex flowering plants. Plantae are multicellular organisms that are capable of producing their own food through photosynthesis.

Kingdom Protoctista includes____________? Read More »

Water has maximum density at____________?

A. 0°C
B. 4°C
C. 4° K
D. 4.8°C

B. 4°C

Water has maximum density at 4°C. This is because as water cools, its molecules slow down and move closer together, causing its density to increase. At 4°C, the water molecules have reached their maximum density, and as the temperature decreases further, the water molecules start to expand and its density decreases. This is why ice floats on liquid water: ice has a lower density than liquid water because its molecules are more spread out.

A. 0°C is the freezing point of water, at which point it changes from a liquid to a solid.

C. 4°K is equivalent to -269.15°C and is the temperature of absolute zero, the lowest temperature possible.

D. 4.8°C is not a temperature at which water has maximum density.

Water has maximum density at____________? Read More »

Lake Uremia is situated in __________ country?

A. Romania
B. Turkiye
C. Iran 
D. Malaysia

C. Iran 

Lake Urmia (also known as Urmia Salt Lake) is the largest lake in Iran and the sixth-largest saltwater lake in the world. It is located in the northwest of Iran, between the provinces of East Azerbaijan and West Azerbaijan. The lake has been facing environmental challenges in recent years, including a sharp decrease in water level and increased salinity due to climate change, agricultural irrigation, and dam construction. Efforts are underway to address these issues and preserve the lake’s ecological balance.

Lake Uremia is situated in __________ country? Read More »

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