Characteristics of Living Things Flashcards
What makes an object living?
All living things must demonstrate all seven characteristics of life.
What are the seven characteristics of living things?
Living things must: require nutrition, respire, show irritability, reproduce, grow, excrete and move.
What is respiration?
Respiration is a chemical reaction which occurs in all living cells, releasing energy from glucose. Energy is necessary for life processes such as metabolism and locomotion.
What is energy stored in?
A chemical called Adenosine Triphosphate (ATP)
What is irritability?
Irritability is the ability to respond to stimuli. For example: shivering, changing colours or plants bending towards light.
What is homeostasis?
Homeostasis the ability to self regulate in response to a change in environment.
Explain the two types of reproduction.
Sexual reproduction -the production of new living organisms by combining genetic information from two organisms of different types (sexes).
Asexual reproduction- type of reproduction that does not involve the fusion of reproductive cells.
What are the three types of asexual reproduction? Explain.
Budding- is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site. - Sponge, Yeast
Fragmentation- where an organism is split into fragments and each of these fragments develop into mature, fully grown individuals that are clones of the original organism. - Starfish
Binary Fission- a separation of the body into two new bodies. - Bacteria and otherunicellular organisms.
True or False:
All Living things have cells.
Adaptation happens over a short time span.
DNA is hereditary.
True
False
True
What is DNA?
DeoxyriboNucleic Acid- genetic instructions for making molecules called proteins to build cells.
