Exam: IELTS

Definition: A thin layer of microorganisms, like bacteria, that stick to surfaces and are protected by a sticky substance they produce.

Example: The biofilm on the rocks in the river was made up of various types of bacteria.

Definition: A type of natural compound found in plants, especially in fruits and vegetables, that has health benefits and is known for its biological activity.

Example: Citrus fruits are rich in bioflavonoids, which can help improve overall health.

Definition: The slow build-up of tiny living things, like bacteria and small animals, on surfaces in water, which can cause damage and make machines work less well.

Example: The ship's hull was covered in biofouling, making it less efficient in the water.

Definition: A type of fuel made from living things or their waste, often used as an alternative to fossil fuels.

Example: Many countries are investing in biofuels to reduce their reliance on oil.

Definition: A term that refers to the living substance within cells, often associated with biological processes.

Example: The scientist studied the biogen to understand cellular functions better.

Definition: The process by which living organisms are produced from other living organisms, rather than from nonliving matter.

Example: The theory of biogenesis explains how life arises from existing life forms.

Definition: Relating to the process of life originating from living matter or the study of genetic processes in living organisms.

Example: The biogenetic research focused on how genes influence the development of organisms.

Definition: Relating to substances or processes that are produced by living organisms.

Example: The biogenic materials in the soil help support plant growth.

Definition: Relating to or originating from living organisms.

Example: The biogenous materials in the soil help support plant growth.

Definition: The process by which life arises naturally from non-living matter, such as simple organic compounds.

Example: The study of biogeny helps scientists understand how life on Earth began.