Characteristics of Life

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What is the study of living things and how they interact with their environment called?

Ecology

What is the term for the removal of waste products of metabolism in living organisms?

Excretion

What is the characteristic of life that involves the reaction of organisms to stimuli in their environment?

Response

What is the term for the way in which living things obtain and utilize food?

Nutrition Signup and view all the answers

What is the characteristic of life that involves the production of new individuals?

Reproduction Signup and view all the answers

What is the term for the ordered way in which living things are arranged structurally?

Organisation Signup and view all the answers

Explain the main purpose of excretion in living organisms.

Removal of waste products of metabolism to maintain homeostasis and prevent toxicity. Signup and view all the answers

What is the difference between catabolic and anabolic reactions in metabolism?

Catabolic reactions involve the breakdown of large substances to smaller ones, while anabolic reactions involve the synthesis of smaller molecules into larger ones. Signup and view all the answers

How do plants respond to stimuli in their environment?

Plants show growth tropisms in response to stimuli such as light, water, gravity, chemicals, temperature, and touch. Signup and view all the answers

What is the main difference between sexual and asexual reproduction?

Sexual reproduction involves the fusion of gametes, leading to variation, while asexual reproduction involves the production of genetically identical offspring. Signup and view all the answers

What role does the liver play in excretion?

The liver breaks down toxic materials as part of the excretory process. Signup and view all the answers

Why do animals tend to move in response to stimuli?

Animals tend to move to find food and avoid danger. Signup and view all the answers

What is the significance of maintaining homeostasis in living organisms?

Maintaining homeostasis helps prevent the accumulation of toxic waste products and ensures optimal cellular function. Signup and view all the answers

How do the metabolic processes of plants and animals differ?

Plants make their own food and produce less waste, whereas animals take in food and produce more waste. Signup and view all the answers

What is the basic unit of living things, and what are its components?

Cells are the basic unit of living things, consisting of organelles suspended in a fluid called cytosol, surrounded by a cell membrane. Signup and view all the answers

What is the difference between autotrophs and heterotrophs in terms of nutrition?

Autotrophs make their own food, whereas heterotrophs cannot make their own food and feed on organic matter produced by or available in other organisms. Signup and view all the answers

What is the hierarchy of organization in living organisms, from smallest to largest?

The hierarchy is: molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and biosphere. Signup and view all the answers

What is the role of nutrition in living organisms, and what are the two main modes of nutrition?

Nutrition is the way organisms obtain and use food, which is needed as a source of materials and energy. The two main modes of nutrition are autotrophy and heterotrophy. Signup and view all the answers

What is the difference between an organ and an organ system, and provide examples of each?

An organ is a structure that performs a specific function, whereas an organ system is a group of organs that work together to carry out a function. Examples of organs include the heart, lungs, and liver, whereas examples of organ systems include the circulatory system and nervous system. Signup and view all the answers

What is the biosphere, and what are its components?

The biosphere is the region of the Earth where life exists, comprising all the parts of the Earth where life is found, including air, water, land, and underground. Signup and view all the answers