Had to look for the options and here is my answer:
The development of pale skin as based on the study of genetics and mutation has been seen to be linked to the "<span>relatively recent European farming populations." This population had been a great influence for this change in their genes. Hope this helps.</span>
The goal of computer forensics is to obtain all the evidences available and then to analyse the evidence and determine what has happened. At the same time it goal is to produce admissible evidence without altering any of the information.
Answer:
B.
Explanation:
The movement of substances(ions and molecules) against their concentration gradient is called Active transport.Since these substances are moving against whew they are already in abundance,extra energy is needed for them to move against this gradient.Therefore,ATP.,oxygen is needed by the cells undergoing this transport process to transfer substances into the cells.
It is useful for entry of substances in plants e.g glucose,and for transport of materials in intestine in man
Na-K pumps, exocytosis,endocytosis are examples of this transport process.
It is inhibited by lack of oxygen,cyanide etc.
Answer:
C. Small cells have a greater surface-to-volume ratio than larger cells.
Explanation:
Smaller cells have more surface area than volume to support interaction of the cell with surroundings and with other cells. Larger surface area supports diffusion of substances and exchange of energy with surroundings. Increase in cell size causes more increase in volume than that of surface area leading to reduced surface-to-volume ratio.
