Biology Characteristics of Life Flashcards

Questions and Answers

What is the scientific term for a living thing?

organism

All living things are?

organized

What is the simplest level at which life may exist?

cell

Are all cells alike?

False Signup and view all the answers

All cells perform various jobs or?

functions Signup and view all the answers

What surrounds a cell and separates it from its environment?

Plasma Membrane Signup and view all the answers

What is the difference between unicellular and multicellular organisms?

Unicellular consists of one cell, multicellular consists of multiple cells. Signup and view all the answers

Give an example of a multicellular organism.

dog, trees Signup and view all the answers

Give an example of a unicellular organism.

bacterium, protist, amoebas, paramecia Signup and view all the answers

Multicellular organisms can be organized into what other levels?

tissues, organs, systems Signup and view all the answers

Define reproduction.

Reproduction is the production of an offspring for life to continue. Signup and view all the answers

Must every member of a particular species be able to reproduce in order for the species to survive?

No Signup and view all the answers

What would happen if all individuals in a species were sterile?

The species would die off. Signup and view all the answers

Reproduction is NOT essential for the survival of an individual but is essential for the survival of the .

organism, species Signup and view all the answers

What is meant by extinction?

Extinction is when the entire species has died off. Signup and view all the answers

Name and define the two basic kinds of reproduction.

Sexual requires two cells; Asexual involves a single organism that can reproduce. Signup and view all the answers

Identify which of the following organisms reproduce sexually or asexually: Bacteria, Hydra, Sea Urchin.

Bacteria = asexual Hydra = asexual Sea Urchin = sexual Signup and view all the answers

How do all organisms begin life?

Single cells Signup and view all the answers

What is the difference between growth and development?

Growth is the increase in living material and size; development involves changes over time. Signup and view all the answers

Do unicellular organisms grow?

False Signup and view all the answers

Do unicellular organisms develop?

False Signup and view all the answers

Do multicellular organisms grow?

False Signup and view all the answers

Do multicellular organisms develop?

False Signup and view all the answers

How is the growth of a living thing different from the growth of a nonliving thing?

Living things grow by cells; nonliving things grow by structure. Signup and view all the answers

Define energy.

Energy is the ability to make things change. Signup and view all the answers

Why is energy important to a living organism?

It powers life processes. Signup and view all the answers

What is the difference between an autotroph and a heterotroph?

Autotrophs obtain energy from the sun to make food; heterotrophs get energy from food they consume. Signup and view all the answers

What is the name of the process that plants use to make their own food using energy from the sun?

Photosynthesis Signup and view all the answers

What are some environmental factors that organisms respond to?

Air, water, weather, and temperature. Signup and view all the answers

Organisms must also respond to ___________ factors in order to stay healthy & survive.

stimuli Signup and view all the answers

What are two internal factors that organisms respond to?

Level of water and nutrients. Signup and view all the answers

Give two examples of how living things respond to changes in their environment.

Squinting on a bright day; turning head quickly when a dog barks. Signup and view all the answers

If light is applied to a human eye, how does it respond?

It squints. Signup and view all the answers

Describe homeostasis.

Homeostasis is the ability of mammals and birds to regulate body temperature. Signup and view all the answers

Identify the feature of life illustrated by the statement 'That boy shot up five inches in only one year.'

Growth Signup and view all the answers

Identify the feature of life illustrated by the statement 'Our cat had a litter of kittens yesterday.'

Reproduction Signup and view all the answers

Identify the feature of life illustrated by the statement 'My dog has become much less clumsy now that he is a year old.'

Growth Signup and view all the answers

Identify the feature of life illustrated by the statement 'Eat a good breakfast and you will be able to run longer.'

Heterotroph Signup and view all the answers

Identify the feature of life illustrated by the statement 'When that car pulled in the driveway, my cat ran to hide under the porch.'

Respond to the Environment Signup and view all the answers

Identify the feature of life illustrated by the statement 'That owl's night vision allows it to see the movement of mice on even the darkest night.'

Development or adaptation Signup and view all the answers

Identify the feature of life illustrated by the statement 'Single-celled organisms live in the pond behind the school.'

Unicellular Signup and view all the answers

Identify the feature of life illustrated by the statement 'Your body normally maintains a temperature of 98.6°F.'

Homeostasis Signup and view all the answers

Identify the feature of life illustrated by the statement 'A giraffe uses its long neck to eat from the high branches of a tree.'

Development or adaptation Signup and view all the answers

Identify the feature of life illustrated by the statement 'is another name for

Organism Signup and view all the answers

Which of the following is a stimulus: the recess bell ringing in an elementary school?

stimulus Signup and view all the answers

Which of the following is a response: your mouth watering at the sight of food on a plate?

response Signup and view all the answers

Which of the following is a stimulus: a sudden drop in air temperature?

stimulus Signup and view all the answers

Which of the following is a stimulus: a flu virus entering your body?

stimulus Signup and view all the answers

Which of the following is a response: getting 'butterflies' in your stomach before giving a speech?

response Signup and view all the answers

Determine if the following describes a living or nonliving thing: rust eating a hole in a metal bucket.

nonliving Signup and view all the answers

Determine if the following describes a living or nonliving thing: an apple on a tree.

living Signup and view all the answers

Determine if the following describes a living or nonliving thing: bacteria.

living Signup and view all the answers

Determine if the following describes a living or nonliving thing: lightning.

nonliving Signup and view all the answers

Determine if the following describes a living or nonliving thing: a dinosaur fossil.

nonliving Signup and view all the answers

Determine if the following describes a living or nonliving thing: a wasp.

living Signup and view all the answers

List characteristics of all living things.

Living Cells, Reproduction, Use of Energy, Growth, Development, Homeostasis, Use of the Environment, One or more cells. Signup and view all the answers

Study Notes

Characteristics of Life

Organism: A scientific term for any living thing.
Living Things: All living things are organized and composed of cells, which is the simplest level at which life may exist.
Cell Types: Cells vary in structure and function; some organisms are unicellular (one cell), while others are multicellular (multiple cells).

Reproduction and Survival

Reproduction Definition: The process of producing offspring to ensure species continuation.
Species Continuation: Not every member of a species needs to reproduce; a few can sustain the species.
Sterility Consequence: If all individuals of a species are sterile, the species would eventually face extinction.
Extinction: Defined as the total death of a species.

Types of Reproduction

Basic Types:
- Sexual Reproduction: Involves two parents and the combination of genetic material.
- Asexual Reproduction: Involves a single organism reproducing by itself.

Growth and Development

Growth vs. Development: Growth is an increase in living material, while development refers to changes over a life span.
Unicellular Growth: Unicellular organisms grow but do not develop in the same manner as multicellular organisms.

Energy and Nutrition

Energy Definition: The capacity to perform work or induce change.
Importance of Energy: Essential for powering life processes within an organism.
Autotrophs vs. Heterotrophs:
- Autotrophs: Organisms that produce their food using sunlight (e.g., plants through photosynthesis).
- Heterotrophs: Organisms that obtain energy by consuming other organisms.

Homeostasis and Response to Stimuli

Homeostasis: The ability of an organism to maintain a stable internal environment despite external changes.
Responses to Stimuli: Organisms respond to environmental factors (e.g., light, temperature) and internal factors (e.g., hydration levels).
Examples of Responses: Squinting in bright light or turning toward a sound.

Characteristics of Living Things

Living Cells: All living things are composed of one or more cells.
Reproduction: Essential for the survival of species.
Energy Utilization: All living organisms use energy to carry out life processes.
Growth and Development: Organisms grow and develop throughout their life cycles.
Homeostasis: Maintaining stable internal conditions.
Environmental Interaction: Living things respond to their environments.

Examples of Living and Nonliving Things

Living: Bacteria, an apple on a tree, a wasp.
Nonliving: Rust, lightning, dinosaur fossils.

Summary of Features of Life

Organism: Another term for a living thing.
Stimulus vs. Response: A stimulus provokes a response (e.g., a bell ringing is a stimulus, mouth watering at food sight is a response).

These key points highlight the fundamental characteristics and concepts related to life and living organisms.

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Test your knowledge on the fundamental characteristics of life with these flashcards. Each card presents a key term related to biology, providing definitions and encouraging deeper understanding. Perfect for students looking to reinforce their learning in a fun and engaging way.

Biology Characteristics of Life Flashcards

Questions and Answers

What is the scientific term for a living thing?

All living things are?

What is the simplest level at which life may exist?

Are all cells alike?

All cells perform various jobs or?

What surrounds a cell and separates it from its environment?

What is the difference between unicellular and multicellular organisms?

Give an example of a multicellular organism.

Give an example of a unicellular organism.

Multicellular organisms can be organized into what other levels?

Define reproduction.

Must every member of a particular species be able to reproduce in order for the species to survive?

What would happen if all individuals in a species were sterile?

Reproduction is NOT essential for the survival of an individual __________ but is essential for the survival of the __________.

What is meant by extinction?

Name and define the two basic kinds of reproduction.

Identify which of the following organisms reproduce sexually or asexually: Bacteria, Hydra, Sea Urchin.

How do all organisms begin life?

What is the difference between growth and development?

Do unicellular organisms grow?

Do unicellular organisms develop?

Do multicellular organisms grow?

Do multicellular organisms develop?

How is the growth of a living thing different from the growth of a nonliving thing?

Define energy.

Why is energy important to a living organism?

What is the difference between an autotroph and a heterotroph?

What is the name of the process that plants use to make their own food using energy from the sun?

What are some environmental factors that organisms respond to?

Organisms must also respond to ___________ factors in order to stay healthy & survive.

What are two internal factors that organisms respond to?

Give two examples of how living things respond to changes in their environment.

If light is applied to a human eye, how does it respond?

Describe homeostasis.

Identify the feature of life illustrated by the statement 'That boy shot up five inches in only one year.'

Identify the feature of life illustrated by the statement 'Our cat had a litter of kittens yesterday.'

Identify the feature of life illustrated by the statement 'My dog has become much less clumsy now that he is a year old.'

Identify the feature of life illustrated by the statement 'Eat a good breakfast and you will be able to run longer.'

Identify the feature of life illustrated by the statement 'When that car pulled in the driveway, my cat ran to hide under the porch.'

Identify the feature of life illustrated by the statement 'That owl's night vision allows it to see the movement of mice on even the darkest night.'

Identify the feature of life illustrated by the statement 'Single-celled organisms live in the pond behind the school.'

Identify the feature of life illustrated by the statement 'Your body normally maintains a temperature of 98.6°F.'

Identify the feature of life illustrated by the statement 'A giraffe uses its long neck to eat from the high branches of a tree.'

Identify the feature of life illustrated by the statement 'is another name for

Which of the following is a stimulus: the recess bell ringing in an elementary school?

Which of the following is a response: your mouth watering at the sight of food on a plate?

Which of the following is a stimulus: a sudden drop in air temperature?

Which of the following is a stimulus: a flu virus entering your body?

Which of the following is a response: getting 'butterflies' in your stomach before giving a speech?

Determine if the following describes a living or nonliving thing: rust eating a hole in a metal bucket.

Determine if the following describes a living or nonliving thing: an apple on a tree.

Determine if the following describes a living or nonliving thing: bacteria.

Determine if the following describes a living or nonliving thing: lightning.

Determine if the following describes a living or nonliving thing: a dinosaur fossil.

Determine if the following describes a living or nonliving thing: a wasp.

List characteristics of all living things.

Study Notes

Characteristics of Life

Reproduction and Survival

Types of Reproduction

Growth and Development

Energy and Nutrition

Homeostasis and Response to Stimuli

Characteristics of Living Things

Examples of Living and Nonliving Things

Summary of Features of Life

Studying That Suits You

Description

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Reproduction is NOT essential for the survival of an individual but is essential for the survival of the .