Answer:
The correct statement concerning the cell membrane lipid molecules is that "energy is not expended during diffusion" (Option d)
Explanation:
Biological membranes are formed by two lipidic layers arranged with their hydrophilic polar heads facing the exterior and the interior of the cells, and their hydrophobic tails against each other. Membranes are fluid, which means that molecules that form it have the capability to move through it.
Lipids can easily change places with other neighbor lipids by <u>lateral diffusion</u> in the same layer. This is passive diffusion, which means that it does not need energy to happen.
Lipids can also diffuse transversally to the other layer, but this kind of movement is not as easy as lateral diffusion.
There are also other lipidic movements as rotational diffusion that imply the rotation of the molecule.
Through this lipidic bilayer, there is also a passive transport of some particles from one side of the cell to the other which happens because of concentration differences.
The best way to describe it would be “the pattern of the graph is constantly changing as it goes thru series of increased and decrease through out the years”
Living organisms are characterized as organisms that perform various functions like growth, movement, reproduction, respiration, nutrition and excretion. All organisms are made up of one or more cells.
Reproduction - organisms make more of their own kind.
Digestion - breakdown of complex food materials into form of energy the organism can use.
Excretion - process by which organisms get rid of wastes.
Growth - process, over time, by which organism changes in size.
adapt.
Answer:
Species 1(A): D F H I K
Species 2(B): L E
Species 3(C): G J
Explanation: the biological species concept defines a species as a group of populations whose members have the potential to interbreed in nature and produce viable, fertile offspring. This means that all members of these populations (called conspecifics) can contribute to a common gene pool. Conspecifics are organisms or populations that belong to the same species. Genes are transferred between conspecific populations through both direct and indirect gene flow.