Lesson 3: Characteristics of Life Flashcards
Living things are made up of?
One or more cells
They are the basic functional unit of life
Cells
Bacteria, yeasts, and some protists contains how many cells?
One cell or unicellular organisms
Humans, plants, some protists, and most fungi contains how many cells?
Two or more or multicellular organisms
They are agents that are acellular, meaning they don’t have cells. They are not considered as living things.
Viruses
Enumerate the biological levels of organization
Cell > Tissue > Organ > Organ System > Organism > Population > Community > Ecosystem > Biome > Biosphere
What is the process by which animals, plants, and microorganisms acquire food?
Nutrition
What is the process by which plants and other autotrophs can produce their own food?
Photosynthesis
Plants and other autotrophs can produce their own food which is why they are classified as?
Autotrophs or producers
Animals, non-green plants, and some microorganisms feed on organic substances from other organisms for their energy. Their dependence on other organisms for food and energy classifies them as?
Heterotrophs
It is the total of all the chemical processes involved in obtaining food, converting food to chemical energy, and transforming energy into usable forms by cells.
Metabolism
The process by which the breakdown of food substances releases the energy
Respiration
Plants convert solar energy into useable _______ through photosynthesis
Energy of carbohydrates
Organic compounds produced by plants are converted into the chemical energy of _____ in the process of cellular respiration
Adenosine Triphosphate (ATP)
The process by which animals rid themselves of waste products and of the nitrogenous by-products of metabolism
Excretion
How does plants execute excretion?
The water is eliminated through the stomatal pores of fruits and leaves
It is any self-regulating process by which biological systems tend to maintain stability while adjusting to conditions that are optimal for survival
Homeostasis
It is a means by which genetic information is passed from one generation to the next
Reproduction
The method in which reproduction of organisms may not involve sex cells or gametes
Asexual reproduction
The method in which reproduction of organisms involves the use of sex cells
Sexual reproduction
It pertains to the permanent increase in size and volume by converting food that we intake to become part of our body cells
Biological growth
It is different from growth. It makes an organism more complex or even changes its form
Biological development
Is an action of an organism or part of an organism that causes a change of position or place
Movement
They are the non-living environmental factors such as light, pressure, temperature, chemical, gravity, and others that greatly affect living things
Stimuli
The reaction of one organism towards a stimulus
Tropism
The ability of organisms to sense and respond to a stimulus is called
Sensitivity
Is the ability of an organism to become suited to its environments
Adaptation
