BIOH111 EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS GRADED A++
chemical level of organization
Atoms, the smallest units of matter that participate in chemical reactions.
Molecules, two or more atoms joined together.
Cells
The basic structural an functional units of an organism
Tissues
groups of similarly specialised cells and the substances surrounding them that usually
arise from a common ancestor and perform certain special functions.
Organs
structures of definite form that are composed of two or more different tissues and have
specific functions.
Systems
related organs that have a common function.
integumentary, skeletal, muscular, nervous and endocrine.
The human organism
a collection of structurally and functionally integrated systems; any living individual.
Homeostasis
condition of equilibrium or balance in the body's internal environment produced by the
interplay of all the body's regulatory processes.
, control of homeostasis
Nervous system and endocrine system, acting together or independently using
feedback systems.
3 main parts of the animal cell
cytoplasm, nucleus, plasma membrane
Cytoplasm
cellular content between the plasma membrane and the nucleus
2 components:
cytosol
organelles
Cytosol
- intracellular fluid
- fluid portion of the cytoplasm that surrounds the organelles
- site of chemical reactions
Cytoskeleton
MICROFILAMENTS
- thinnest filaments
- composed of actin and myosin
- provide mechanical support
INTERMEDIATE
- intermediate size
COMPLETE SOLUTIONS GRADED A++
chemical level of organization
Atoms, the smallest units of matter that participate in chemical reactions.
Molecules, two or more atoms joined together.
Cells
The basic structural an functional units of an organism
Tissues
groups of similarly specialised cells and the substances surrounding them that usually
arise from a common ancestor and perform certain special functions.
Organs
structures of definite form that are composed of two or more different tissues and have
specific functions.
Systems
related organs that have a common function.
integumentary, skeletal, muscular, nervous and endocrine.
The human organism
a collection of structurally and functionally integrated systems; any living individual.
Homeostasis
condition of equilibrium or balance in the body's internal environment produced by the
interplay of all the body's regulatory processes.
, control of homeostasis
Nervous system and endocrine system, acting together or independently using
feedback systems.
3 main parts of the animal cell
cytoplasm, nucleus, plasma membrane
Cytoplasm
cellular content between the plasma membrane and the nucleus
2 components:
cytosol
organelles
Cytosol
- intracellular fluid
- fluid portion of the cytoplasm that surrounds the organelles
- site of chemical reactions
Cytoskeleton
MICROFILAMENTS
- thinnest filaments
- composed of actin and myosin
- provide mechanical support
INTERMEDIATE
- intermediate size
