The common function of antennae in arthropod is to smell
Explanation
Antennae are a long sensory appendages on the head of insects, crustaceans and some arthropods. They are usually covered with alfactory receptors that can detect odor molecules in the air that is the sense of smell, therefore they are the noise of insects and some arthropods
The answer is A. Oligotrophic lakes are clear and hence
have little vegetation in them (hence no net primary production) that
could initiate the process of eutrophication. Eutrophication is brought about when bacteria
break down the high amount of organic matter hence reduce the oxygen supply in
the waters.
Answer:
C. A plant absorbing carbon dioxide during photosynthesis
Explanation:
Carbon assimilation occurs when inorganic carbon (carbon dioxide) is converted to organic compounds by living organisms such as plants.
Let's analyze each choice;
The respiration of a animal - Respiration
A factory burning fossil fuels- Combustion
A plant absorbing carbon dioxide during photosynthesis- assimilation or fixation
Fossil fuel deposits - from decay of dead organisms and waste products.
Yeah yeah so :D,
Large polar molecules can only cross the membrane with the help of protein named channel protein and carrier protein.
So, this both proteins act like a gate, the large molecules enter the protein and the protein let the large molecules in to the membrane. (see the picture so that you can understand more, its carrier protein)
the only difference between channel protein and carrier protein is, channel proteins has fixed shape while carrier protein can flip.
