Seven Life Processes | Physiology | Biology | FuseSchool
Summary
TLDRThis script explores the remarkable diversity of life on Earth, highlighting the seven fundamental life processes shared by all living organisms. It emphasizes movement, respiration, sensitivity, growth, reproduction, excretion, and nutrition, illustrating how each process, from the swift cheetah to the expansive honey fungus, contributes to the intricate balance of life. The memorable acronym 'MRS GREN' encapsulates these processes, offering a simple way to understand the complex tapestry of life on our planet.
Takeaways
- 🌏 The Earth is home to an astonishing diversity of life, with an estimated 5 to 10 million different species, excluding bacteria due to their difficulty to count.
- 🏃♂️ All living organisms, from amoebas to giraffes, can move in some way, with some like the cheetah moving at high speeds and others like plants moving more slowly.
- 🔥 Respiration is a universal cellular process that releases energy stored in food, essential for all life forms to survive.
- 👀 Sensitivity, or the ability to sense the environment, is crucial for organisms to find food, shelter, or avoid predators, with humans having five distinct senses.
- 🌱 Growth is a characteristic of all organisms, with some like the honey fungus in Oregon being the largest living organism, spanning 2.4 miles.
- 💑 Reproduction is a key life process, with organisms using either asexual or sexual methods to propagate, varying greatly in the time it takes to reproduce.
- 🚰 Excretion is the process of eliminating waste products from chemical reactions within the organism, different from egestion.
- 🌱 Nutrition is the process by which all living organisms obtain the food they need, with plants being unique in making their own food through photosynthesis.
- 🧠 The seven life processes can be remembered by the acronym 'MRS GREN': Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, and Nutrition.
- 🎓 Understanding these processes is fundamental to grasping what makes something a living thing, as they are common to all forms of life on Earth.
Q & A
What is the estimated number of living species on Earth?
-There are an estimated five to ten million different living species on Earth, excluding bacteria due to the difficulty in counting them.
What are the seven life processes that all living things can carry out?
-The seven life processes are movement, respiration, sensitivity, growth, reproduction, excretion, and nutrition.
How does a cheetah demonstrate the life process of movement?
-The cheetah demonstrates movement as it is the fastest animal on the planet, capable of running at speeds up to 60 miles per hour.
What is the role of respiration in living organisms?
-Respiration is a cellular process that releases energy stored in food, which all living organisms need to sustain life.
Why is sensitivity important for a living organism's survival?
-Sensitivity allows an organism to sense its environment, which is crucial for finding food, shelter, or avoiding predators.
What is the difference between growth in basic and complex organisms?
-In basic organisms, growth involves cells getting bigger, while in complex organisms, it involves the increase in the number of cells.
What is the largest living organism on Earth, and what type of organism is it?
-The largest living organism on Earth is a type of honey fungus growing in Oregon, which is thought to be 2.4 miles across.
What are the two types of reproduction mentioned in the script?
-The two types of reproduction mentioned are asexual reproduction, which some organisms like bacteria can do on their own, and sexual reproduction, which requires a male and female of the species.
How often can bacteria reproduce, and how does this compare to the gestation period of an African elephant?
-Bacteria can reproduce every 20 minutes, which is significantly faster compared to the 22-month gestation period of an African elephant.
What is the difference between excretion and egestion?
-Excretion refers to the process of getting rid of waste from chemical reactions within the organism, while egestion is the process of expelling undigested food from the body.
How do plants obtain their food, and what is this process called?
-Plants obtain their food through the process of photosynthesis, where they convert sunlight, carbon dioxide, and water into glucose and oxygen.
What is the acronym 'MRS GREN' used for in the script, and what does it represent?
-The acronym 'MRS GREN' is used to help remember the seven life processes: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, and Nutrition.
Outlines
🐟 The Diversity of Life and Seven Life Processes
This paragraph introduces the vast array of life forms on Earth, estimated to be between five to ten million species, excluding bacteria due to their difficulty in counting. It emphasizes the seven life processes that all living organisms share, regardless of their complexity or simplicity. These processes are movement, respiration, sensitivity, growth, reproduction, excretion, and nutrition, which are essential for the survival and functioning of all life forms.
Mindmap
Keywords
💡Diversity of Life
💡Life Processes
💡Movement
💡Respiration
💡Sensitivity
💡Growth
💡Reproduction
💡Excretion
💡Nutrition
💡Amoeba
💡Giraffe
💡Bacteria
💡Honey Fungus
💡MRS GREN
Highlights
The diversity of life on Earth is staggering, with an estimated 5 to 10 million different species excluding bacteria.
All living things share seven fundamental life processes.
Movement is the first life process, with all organisms capable of some form of movement.
Cheetahs, as the fastest animals, demonstrate obvious movement with speeds up to 60 miles per hour.
Respiration is essential for releasing energy stored in food through cellular processes.
Organisms have evolved different respiration methods, but all require energy for life.
Sensitivity allows organisms to sense their environment for survival, such as finding food or shelter.
Humans possess five senses, offering a clear understanding of the environment.
Growth is a universal process, with organisms ranging from single-celled to complex multicellular structures.
The largest living organism, a honey fungus in Oregon, demonstrates continuous growth in plants.
Reproduction is vital, with organisms employing asexual or sexual methods to propagate.
Bacteria reproduce rapidly every 20 minutes, contrasting with elephants taking 22 months for gestation.
Excretion is the process of eliminating waste products from chemical reactions within organisms.
Egestion is different from excretion, with the latter referring to waste removal from internal processes.
Nutrition is the final life process, where all organisms require food, either produced or obtained.
Plants perform photosynthesis for nutrition, while other organisms depend on external food sources.
The acronym 'MRS GREN' helps remember the seven life processes: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, and Nutrition.
Transcripts
[Music]
look at this fish swimming in the sea or
the spurred up a tree what about a
bacteria or even a bumblebee
don't worry i won't rhyme for the entire
video but the amazing diversity of life
on planet earth is truly staggering
there are estimated to be between five
to ten million different living species
on the earth and that's excluding all
the bacteria as they are really hard to
count
so what do they all have in common
what makes something a living thing
well
scientists have found that all living
things from the simple little amoeba all
the way up to a big tall giraffe and
everything in between can carry out
these seven life processes
the first is movement some organisms
move very obviously like a cheetah the
fastest animal on the planet which can
run at 60 miles per hour
other organisms like plants move much
more slowly but all living things do
move
the second is respiration
respiration is a process that occurs in
cells to release energy that is stored
in food
organisms have evolved slightly
different ways of doing this but all
living things need energy to live and
this is how they release them
the third is sensitivity
in order for a living organism to
survive it needs to be able to sense its
environment it could be to find food or
shelter or avoid predators but all
living things have evolved at least
simple senses to do this
humans have the five senses of touch
taste sight sound and smell which gives
us a very clear understanding of our
environment
the fourth process is growth all
organisms grow in basic organisms the
cell gets a little bit bigger in more
complex organisms you get more and more
cells
animals tend to stop growing in
adulthood but some plants can continue
growing and get very big
in fact the biggest living organism on
the planet isn't a plant it's a fungus
it's a type of honey fungus growing in
oregon and is thought to be 2.4 miles
across
fifth is reproduction some organisms can
reproduce on their own such as bacteria
this is called asexual reproduction
others carry out sexual reproduction
using a male and female of the species
bacteria can reproduce every 20 minutes
an african elephant takes 22 months to
carry its baby
excretion is a sixth process
this is not the same as pooing which is
actually called egestion
but excretion means getting rid of waste
from chemical reactions in the organism
respiration for example makes waste
products and each organism needs to get
rid of these this is called excretion
the final process is nutrition every
living organism needs some sort of food
plants can make their own food by the
process of photosynthesis but all other
organisms have to get their food from
somewhere else
however the process of obtaining food by
either way is called nutrition
so there you have it the seven life
processes
you can remember them easily by learning
the phrase mrs gren
movement respiration sensitivity growth
reproduction excretion and nutrition
jim
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