Living/not living
What is an organism?
An individual living thing.
Which is broader: genus or species?
Genus
Which statement best explains metabolism: maintaining a stable internal environment, all chemical reactions in an organism, or making new organisms?
All chemical reactions in an organism.
An organism is unicellular, and lives in a hot spring. Is it more likely Bacteria, Archaea, or Eukarya?
Archaea. Many archaea live in extreme environments
Which characteristic means that an organism can make more organisms of its own kind?
Reproduction.
is bacteria a living thing and why?
Bacteria is a living organism that is made of ONE CELL
Unicellular!
Can perform all the characteristics of life.
Put these in order: Kingdom, Species, Domain.
Domain → Kingdom → Species.
Levels of organization from smallest to largest
cells--> tissues--> organs--> organ system--> organism!
A mushroom absorbs nutrients from dead organic material. Which kingdom does it belong to, and how does it obtain food?
FUNGI!
A plant grows taller and develops new leaves over several weeks. Which TWO characteristics of life does this demonstrate?
Growth and development, and use of energy.
A candle flame grows, uses oxygen, and releases energy. Give TWO reasons why it is not considered a living organism.
Fire is not made of cells and cannot reproduce biologically or maintain homeostasis.
What are the eight levels of classification from broadest to most specific?
Domain → Kingdom → Phylum → Class → Order → Family → Genus → Species.
Are plants heterotrophs or autotrophs and why?
AUTOTROPHS! They can produce their own food!
A student claims that all bacteria cause disease. Explain why this statement is incorrect.
Most bacteria do not cause disease. Many are harmless or beneficial, such as bacteria that help with digestion and decomposition.
A student touches a hot object and immediately pulls their hand away. Which characteristic of life is being demonstrated?
Responding to stimuli.
A robot senses its environment, moves, and uses electricity. Why does it not meet all the characteristics of life?
It is not made of cells and does not carry out biological processes such as metabolism and reproduction as an organism.
A student accidentally places Species before Genus when listing the levels of classification. What is the correct order from Genus to Species?
Genus → Species.
A person starts shivering in a cold room. How does this help maintain homeostasis?
Shivering causes muscles to contract rapidly, producing heat and helping raise body temperature.
Which kingdom do many algae belong to in the school classification system?
Protist!
Name 2 organ systems that you know...?
respiratory system
immune system
cardiovascular system
muscular system
urinary system
A scientist discovers something that grows, uses energy, responds to its environment, and reproduces, but it is not made of cells. Can it be classified as a living organism using the characteristics of life? Explain.
No. Being made of cells is a fundamental characteristic shared by all known living organisms.
What is taxonomy?
The science of naming and classifying organisms.
After exercising, a person's heart beats faster and breathing becomes quicker. How do these responses help maintain homeostasis?
They deliver more oxygen to cells and help remove carbon dioxide while supporting the body's increased energy needs.
Name the three kingdoms that include unicellular organisms in the six-kingdom system.
Eubacteria, Archaebacteria, and Protista. Some protists are multicellular.
what does evolution mean?
the process by which animals, plants, and other living organisms are transformed into different forms by the accumulation of changes over successive generations.