Bio2.1 Flashcards
(18 cards)
What are some examples of non-communicable diseases?
Cancers, heart diseases, diabetes, chronic renal diseases
These diseases do not spread from person to person.
What is a viral disease that is a serious and growing health problem worldwide?
AIDS
Acquired Immunodeficiency Syndrome is caused by the HIV virus.
What is one of the leading causes of death worldwide?
Cancers
The causes of cancer are not fully understood.
What chronic renal disease has recently become a serious health problem in Sri Lanka?
CKDu
Chronic Kidney Disease of unknown etiology.
What is DNA fingerprinting used for?
Parentage testing, criminal investigations, immigration disputes
This technique helps identify individuals based on their unique DNA patterns.
What criteria can be used to observe diversity among living organisms?
Size, shape, form, habitat
These criteria help categorize organisms in biological studies.
What is the size range of bacteria compared to Giant Sequoia?
1 um - 5 um for bacteria; up to 100m for Giant Sequoia
This illustrates the vast diversity in organism sizes.
Give an example of an organism with a cylindrical shape.
Earthworm
The shape helps in its movement through soil.
What is the difference between unicellular and multicellular organisms?
Unicellular: Amoeba; Multicellular: any plant or animal
This distinction is based on the number of cells in an organism.
What is the habitat type for fish?
Aquatic
Fish live in water environments.
What is metabolism?
The sum of all chemical activities in an organism
It includes both catabolic and anabolic reactions.
What is the characteristic of growth in organisms?
Irreversible increase in dry mass
This is a defining feature of living organisms.
What is irritability in organisms?
The ability to respond to stimuli from the environment
This response is crucial for survival.
What systems contribute to movement in animals?
Nervous, hormonal, muscular, skeletal systems
These systems work together for coordinated movement.
What is adaptation?
A peculiarity of structure, physiology or behavior that promotes survival
Examples include sunken stomata in xerophytes.
What is the ability to produce offspring for species continuity called?
Reproduction
This is essential for the survival of a species.
What controls specific physiological, morphological, and behavioral characters in organisms?
Genes
Genes are inherited from one generation to the next.
What does evolution refer to?
The ability of organisms to change over time due to genetic modification
This process is fundamental to the diversity of life.
