Podcast
Questions and Answers
Which characteristic of living organisms is primarily responsible for the continuation of a species?
Which characteristic of living organisms is primarily responsible for the continuation of a species?
- Excretion
- Nutrition
- Growth
- Reproduction (correct)
Which of the following is an example of irritability in living organisms?
Which of the following is an example of irritability in living organisms?
- An animal digesting its food
- A mushroom releasing spores
- A bacteria dividing to form two new cells
- A plant growing towards sunlight (correct)
Why is excretion essential for living organisms?
Why is excretion essential for living organisms?
- To digest the food
- To absorb the biological molecules
- To provide the body with energy
- To remove waste products produced by metabolic processes (correct)
Which process involves the breakdown of nutrients to release energy in cells?
Which process involves the breakdown of nutrients to release energy in cells?
What distinguishes sexual reproduction from asexual reproduction?
What distinguishes sexual reproduction from asexual reproduction?
How do plants primarily obtain the energy needed for growth and other life processes?
How do plants primarily obtain the energy needed for growth and other life processes?
What is the significance of 'dry mass' when measuring the growth of an organism?
What is the significance of 'dry mass' when measuring the growth of an organism?
Which of the following best describes the term metabolism?
Which of the following best describes the term metabolism?
An animal migrating to a warmer climate during winter is an example of which characteristic of living organisms?
An animal migrating to a warmer climate during winter is an example of which characteristic of living organisms?
Why is reproduction considered essential for all living organisms?
Why is reproduction considered essential for all living organisms?
Which statement accurately compares aerobic and anaerobic respiration?
Which statement accurately compares aerobic and anaerobic respiration?
If a plant bends toward a window, which two characteristics of living things are being demonstrated?
If a plant bends toward a window, which two characteristics of living things are being demonstrated?
In which process do organisms remove waste products and excess substances?
In which process do organisms remove waste products and excess substances?
Why is sensitivity, or irritability, important for an organism's survival?
Why is sensitivity, or irritability, important for an organism's survival?
Which of the following is the most accurate description of nutrition?
Which of the following is the most accurate description of nutrition?
What form of reproduction involves only one parent and results in offspring that are genetically identical to the parent?
What form of reproduction involves only one parent and results in offspring that are genetically identical to the parent?
Which process is directly associated with an increase in the number or size of cells in an organism?
Which process is directly associated with an increase in the number or size of cells in an organism?
What is the role of stimuli in the characteristic of irritability?
What is the role of stimuli in the characteristic of irritability?
Which statement accurately describes how animals obtain energy through nutrition?
Which statement accurately describes how animals obtain energy through nutrition?
Why do organisms require movement as a part of their survival?
Why do organisms require movement as a part of their survival?
Flashcards
What is Growth?
What is Growth?
An increase in the size or dry mass of an organism.
What is Nutrition?
What is Nutrition?
The process of obtaining food for energy and growth.
What is Respiration?
What is Respiration?
The chemical breakdown of nutrients to release energy.
What is Sensitivity?
What is Sensitivity?
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What is Movement?
What is Movement?
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What is Excretion?
What is Excretion?
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What is Reproduction?
What is Reproduction?
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What is a Stimulus?
What is a Stimulus?
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What is Asexual Reproduction?
What is Asexual Reproduction?
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What is Sexual Reproduction?
What is Sexual Reproduction?
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What is Metabolism?
What is Metabolism?
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What is Aerobic Respiration?
What is Aerobic Respiration?
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What is Anaerobic Respiration?
What is Anaerobic Respiration?
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Study Notes
- Biology with Mrs. Darlington explains the 7 characteristics of living organisms
- These are: growth, nutrition, respiration, irritability, movement, excretion and reproduction
Movement
- All organisms move to some degree.
- Movement occurs in response to stimuli, changing position by moving a part of their body, or their entire body.
- Animals move to find food or avoid being eaten.
- Plants move to be nearer sunlight, catch food, and release seeds.
Reproduction
- All organisms must reproduce to survive.
- Two types of reproduction exist: sexual and asexual.
- In asexual reproduction, organisms reproduce through a form of growth, dividing into two or growing to produce a body part that breaks away to form a new individual.
- Sexual reproduction involves the production of sex cells that fuse together at fertilization.
Sensitivity
- Sensitivity is a.k.a. irritability.
- Any change in our surroundings is a stimulus.
- Stimuli are detected by the body and lead to a change in behavior.
- Response is how we react to a stimulus.
Growth
- Growth is a permanent increase in the size of an organism.
- It is defined as an increase in dry mass after the removal of all the water.
- Growth is also due to an increase in the number of cells.
- Composed of many cells, organisms grow from a single cell, which absorbs food, increases in size, and divides into two cells
Respiration
- Occurs in the cells of all living organisms to produce energy.
- Digestion and molecules from food absorb after a meal.
- These travel to your cells and are broken down in chemical reactions to release energy.
- Two types of respiration are aerobic (with oxygen) and anaerobic (without oxygen).
Excretion
- Removal of the waste products of metabolism.
- Metabolism is the whole sum of reactions throughout the body within each cell that provides the body with energy, which includes the removal of substances that are surplus to requirements.
Nutrition
- Process of obtaining food for energy.
- Animals get energy from food, whether it be plants or other animals.
- The food consumed allows them to make new cells for growth.
- Plants get energy by absorbing light for photosynthesis, used to convert CO2 and H2O into sugars.
Vocabulary
- Respiration is the chemical breakdown of nutrients inside cells to release energy.
- Aerobic respiration occurs when oxygen is present in cells.
- Anaerobic respiration occurs when oxygen is not present in cells.
- Stimulus is a change in the environment.
- Asexual reproduction forms new individuals from one parent without the fusion of gametes.
- Sexual reproduction forms new individuals by the fusion of gametes (sperm and eggs).
- Metabolism is all the chemical reactions that occur in an organism.
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