Active transport is the energy-requiring process of pumping molecules and ions across membranes against a concentration gradient.
Endocytosis is the process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane, and bringing it into the cell
Answer:
Charge & Size
Explanation:
The smaller the particles, the easier they can diffuse through the cell membrane because they can pass through the channels of the cell membrane,
The lipid layer of the cell membrane is hydrophobic hence‘hates’ charged molecules. Polar or charged molecules will need special channels with trans-membrane proteins to facilitate their movement
This is false. Green algae consist of the Chlorophytes and Charophyte/Streptophyta. Land plants are classified as embryophytes and are thought to have evolved from the charophytes.
Answer:
A) The role of bacteria fixing nitrogen is very important because it fixes atmospheric nitrogen in the roots of plants. For example, Azotobacter is a bacteria which lives in the root of the higher plants. The bacteria fixes nitrogen for the plant and the plant gives habitat and food to the bacteria and hence, both get benefit.
B) Nitrifying bacteria are the bacteria which converts ammonia into nitrates. Examples are Nitrosomonas and Nitrobacter.
C) Denitrifying bacteria is a type of bacteria which converts nitrates into atmospheric nitrogen. Examples are Serratia and Pseudomonas.
