Mocks Flashcards
What is the approximate thickness of the plasma membrane of a cell?
10nm
Is a facilitated diffusion a passive or active transport?
Passive
A channel also always uses a passive transport.
What is a function of cyclins?
Control of the cell cycle.
What promotes genetic variation?
Crossing over in homologous chromosomes.
What is the energy absorbed by chlorophyll used directly for in plants?
To produce ATP and to split water.
Which statement is part of the cell theory?
All cells come from pre-existing cells.
What term is used for different forms of a gene?
Alleles.
What can be deduced from differences in amino acid sequences between particular proteins in different species?
How long ago they shared a common ancestor.
What is a mesocosm?
A small area where parts of the natural environment are kept under controlled conditions.
What is recycled in an ecosystem?
Nitrogen and carbon are all recycled but not energy.
What happened to the finches on the Galápagos Islands? Which process of evolution?
Selection pressure caused by the exploitation of different food sources.
What are the three domains of living organisms?
Archaea, eubacteria and eukaryotes.
What characteristic is only found in mammals and not other chordates?
Hair.
What is a characteristic of intestinal villi?
They increase the surface are of the small intestine.
What is a role of the coronary arteries?
To supply the heart muscles with glucose.
