Studied by 2 PeopleTags & Description
What do all organisms need to survive? (5)
Hint: COWNS
Water, nutrients, space to live, oxygen, and C02
What does water help organisms with?
Do cellular activity (ex. DNA replication, cell division, etc.)
What do can some organisms survive without?
Sunlight
Are plants considered organisms?
Yes!
What is an organism?
An individual animal, plant, or single-celled life form
Do plants still need to make nutrients, because they already make their own food through photosynthesis?
Yes.
What purpose do nutrients give the organism?
What they need to grow!!!
What can organisms be?
Autotrophs (producers), and heterotrophs (consumers)
What are some examples of autotrophs (producers)
Plants, and some bacteria
What are some examples of heterotrophs (consumers)
Carnivores (eats animals)
Herbivores (eats plants)
Omnivores (eats plants and animals)
What is autotrophs?
Producers.
(auto-matically make food for themselves)
What is heterotrophs?
Consumers
(I can only do hetero -- ONE THING -- which is eat what autotrophs produce)
Space to live provides organisms with…?:
A place where they can get food, water, and shelter
Organisms often ____ for space with other organisms?
FIGHT!!! COMPETE!!!
What do plants need for photosynthesis?
Carbon dioxide
What do animals AND plants need oxygen for?
Cellular respiration
Do all organisms need air to live in environments, where air is unavailable?
Not all.
TRUE OR FALSE? All organisms are made of cells.
True! :)
TRUE OR FALSE? All organisms do not contain homeostasis
False
TRUE OR FALSE? All organisms obtain and use energy
True!
TRUE OR FALSE? All organisms do not reproduce
False
TRUE OR FALSE? All organisms pass their traits to offspring.
True
TRUE OR FALSE? All organisms don’t grow.
Wth. False!
TRUE OR FALSE? All organisms respond to changes in their environment.
True!
TRUE OR FALSE? All organisms change over time as a species.
True
All organisms have these characteristics…(8)
Hint: Birds CHERP and it went GRC. I was surprised.
Change over time as a species
maintain Homeostasis
obtain and use Energy
Reproduce
Pass traits to offspring
Grow
Respond to changes in their environment
are made of Cells
Are all organisms made of cells?
Yeah
Types of cells that organisms are made of
Unicellular and multicellular
What’s unicellular cell?
Simple
Single cell.
Ex. bacteria
What is multicellular?
Complex
Made of many cells
(Ex. animals, plants)
All organisms can maintain homeostasis. Define homeostasis
Ability to maintain ideal internal temperature in response to environmental changes
What are examples of homeostasis in humans?
In hot conditions, we sweat to cool off
In cold conditions, we shiver to stay warm
For our bodies to function properly, we need to be in ________
Homeostasis
TRUE OR FALSE?
All organisms do not use energy.
False bruddah
What’s the cell’s energy currency?
ATP (adenosine triphosphate)
What does ATP do?
Hint: Daily fun and repairs or replaces damaged
Powers daily functions and repair/replaces damaged cells
What does ATP stand for? (WILL BE ON TEST!)
Adenosine triphosphate
True or false? Organisms can reproduce
Yes duh
Define sexual reproduction
Two parents produce offspring w/ different genes
Define asexual reproduction
Single parents produces offspring identical to parent (clone)
How do organisms grow?
Hint: isn
Cells increase in size or number
How do organisms pass traits to their offspring?
Traits r passed on thru genes found in the DNA (deoxyribonucleic acid)
When do organisms pass traits to offspring?
Asexual or sexual reproduction
TRUE OR FALSE:
Bacteria are unicellular therefore they cannot grow.
False.
Because bacteria, which is an organism, can grow larger.
(Remember ALL organisms GROW!)
Define stimulus
Any activity that brings a response
What are examples of INTERNAL stimulus
Hunger (stimulus) → tells u to eat (response)
Thirst (stimulus) → tells u to drink wota (response)
Examples of EXTERNAL stimulus (WILL BE ON THE TEST!!)
Light (stimulus) → tells u to stay awake (response)
Sound (stimulus) → tells u to be aware of ur surroundings (response)
How do all organisms, as a species, change over time?
Natural selection
Can individuals evolve?
No, only populations can
What is the smallest unit of life?
Cells
What type of cell is fat tissue made of? (This is a check-in question)
Fat cells
What are muscles also known as?
Tissues
Can all tissues be muscles
Not all
TRUE OR FALSE? Specialized cells carry out specific function
True! :D
Can organisms be unicellular, which means that they have no cell specialization?
Ofc.
Define organs
Tissues that are organized into larger structures w/ one main function
What are examples of tissues that are organized into larger structures with one main function?
Organs:
Lungs, heart, brain, liver, kidney
How many kind(s) of tissue are organs made of?
Multiple!
What’s an organ system?
Groups of organs that have related functions
The cardiovascular system is made of _______
organs
Your heart is made of what tissue(s)?
a) epithelial tissue
b) connective tissue
c) nervous tissue
d) muscular tissue
e) all of the above
e. The heart are made of multiple tissues.
What’s an atom?
An atom is the smallest unit of matter
What is considered non-living and living?
Anything before the cell is non-living, and whatever is after that (including the cell) is living
What is a cell?
Smallest unit of life, that has all the characteristics of living things
What is a cell? pt.2
Specialized cells to carry out specific functions
Ex. muscle cells, epithelial cells, fat cells
What are tissues?
Groups of cells that are similar in shape and function
Ex. Epithelial tissue: skin that covers the outside surface of your body
What are organs?
Tissues that are organized into larger structures that have one function
Ex. heart pumps blood thru ur body
What are organs systems?
Groups of organs that have related functions
Ex. circulatory system includes the heart, veins, etc
TRUE OR FALSE? (Check-in question)
A cell that lines your small intestine will have a different structure and function from a cell that lines your nostrils
True obv
What are prokaryotes?
Simple, unicellular organisms
Has no membrane-bound organelles (no nucleus.. no ribosome)
All prokaryotes are bacteria (but not all bacteria are unicellular!)
TRUE OR FALSE?
Is all bacteria unicellular organisms?
False. Bacteria is most commonly unicellular but not ALWAYS. Ex. cyanobacteria
What are eukaryotes?
Complex organisms (most living things r eukaryotes)
Can be unicellular/ multicellular
Contains organelles surrounding membranes (including nucleus)
Check in question
U find a mystery unicellular organism under your microscope. You notice it’s membrane-bound organelles. What type of organism is it?
A) Eukaryote
B) Prokaryote
C) It’s not an organism
A. “Membrane-bound”
What’s a unicellular organism?
Has only one cell
Can be a prokaryote (bacteria) or a eukaryote
Carries out all functions required to maintain life of organism
NO cell specialization
Check in question
U find a mystery unicellular organism under your microscope. What MUST be true about this organism?
A) It’s a bacteria cell
B) It’s a eukaryote
C) It’s a prokaryote
D) It has no cell specialization
D.
What is a multicellular organism?
Made of more than one cell
Cells develop differently thru cell differentiation so they have dif appearances that suit their functions
They have cell specialization because of cellular differentiation
What’s cell differentiation?
The PROCESS of cells developing differently
Result of gene expression
What is cell specialization?
Cells specialized to perform certain functions
Check in question
A neuron cell and a smooth muscle cell look and function differently from each other, because of what process?
A) Cell differentiation
B) Cell specialization
C) Mutations in the DNA
A. It’s the process
What is a neuron/nerve cell
Sends info from one part of the body to another part
Very long et thin
What is a red blood cell
Shaped like flattened disks so they can easily flow thru blood vessels
Carries oxygen thru the body
Those with sickle cell anemia: sickle shaped red blood cells.
^Because of their change in appearance ability to carry oxygen is now negatively affected
What is a sperm cell
Fertilizes the egg cell
Strong tail for quick swimming, distinct head helps it enter the egg cell
What is gene expression
The process a gene is switched on or off, resulting in dif proteins being made
(ex. melanin switched off, it’s not in the heart)
Check in question
Which of the following cells share the same DNA (assume they all from ur body)
A) Connective tissue cell and white blood cell
B) Epithelial cell and intestinal cell
C) Red blood cell and smooth muscle cell
D) All of the above
E) None of the above
D
