Answer:
Homologous structures
Explanation:
Homologous structures are structures (i.e skeletal elements) that come from the same common ancestor but they appear in the descendants of the ancestor with some modifications, normally due to different functions.
The wing of bats, flippers of whales or dolphins and the forelimbs of horses is a common example of homologous structures. Bats, whales and horses are vertebrates and all came from the same vertebrate common ancestor.
The common ancestor of these organisms had the bones that make up these structures, but through evolution those bones that make up the homologous structure were modified to serve different functions. They were modified for the flight in bats, for swimming in whales and for life on land in horses.
Answer:
B.Active transport, because energy is being used to move molecules against the concentration gradient
Explanation:
Substances move in and out of living cells through various transport means. Some substances move passively (without energy) while others move actively (with energy). Active transport of substances involves the movement of molecules against the concentration gradient.
Active transport moves against concentration gradient in the sense that the movement occurs from a region which is less concentrated to one which is more concentrated, hence, energy input in form of ATP is required for such transport to occur. This is the case of the cellular transport in the diagram. Therefore, it is an ACTIVE TRANSPORT because energy input (ATP) is required.
Note, Osmosis and facilitated diffusion are types of passive transport that requires no energy to occur.
Organic compunds usually contain carbon. You can conclude this because of the relation of the word "organic" with the word "carbon", which is considered to be the element of life.
Inorganic compunds are compunds that do not an organic compund (characterized for cointaing carbon) though some compunds contain carbon are inorganic.
Hope it helped,
BioTeacher101
<span>There are 32 Lakshanas or 32 signs of a great man that distinguish the budha. No one knows what Buddha really looked like. They use clues such as tradition and the fact that he was a Prince to help guide them.Some of the 32 major characteristics, include 40 teeth, gold color skin and deep blue eyes.</span>
