Define diffusion.
The process by which molecules spread from areas of high concentration to low concentration.
True or false: Diffusion requires energy input.
FALSE
Diffusion is a passive process that occurs naturally.
What is osmosis?
The diffusion of water across a selectively permeable membrane.
Fill in the blank: Mixtures can be separated by _______.
Physical methods
Define homogeneous mixture.
A mixture with a uniform composition throughout, like saltwater.
What is a heterogeneous mixture?
A mixture where the components are not uniformly distributed, like salad.
True or false: Filtration is a method for separating mixtures.
TRUE
What is chromatography used for?
Separating components of a mixture based on their movement through a medium.
Define asexual reproduction.
A mode of reproduction that involves a single organism producing offspring identical to itself.
Fill in the blank: In asexual reproduction, offspring are _______.
Genetically identical to the parent
What is sexual reproduction?
The process involving the fusion of male and female gametes to form offspring.
True or false: Sexual reproduction increases genetic diversity.
TRUE
Define binary fission.
A form of asexual reproduction where a single organism divides into two identical organisms.
What is budding?
A form of asexual reproduction where a new organism develops from an outgrowth of the parent.
Fill in the blank: Meiosis is involved in _______ reproduction.
Sexual
What is the role of gametes?
Gametes are reproductive cells that unite during sexual reproduction.
True or false: Cloning is a form of asexual reproduction.
TRUE
Define spore formation.
A method of asexual reproduction where spores are produced and can develop into new organisms.
What is fertilization?
The fusion of male and female gametes to form a zygote.
Fill in the blank: Regeneration is a type of _______ reproduction.
Asexual
What is sexual dimorphism?
The differences in appearance between male and female members of the same species.
True or false: Parthenogenesis is a form of sexual reproduction.
FALSE
Parthenogenesis is a form of asexual reproduction where an egg develops without fertilization.
Define cross-fertilization.
The fertilization of an egg from one organism by the sperm of another organism.
What is the significance of genetic variation?
It enhances a population’s ability to adapt to changing environments.
