During the cortical reaction, enzymes are released from vesicles in the oocyte. <span>The cortical reaction is a reaction for preventing polyspermy, the fusion of multiple sperm with one egg. It is a process which occurs during fertilization by the release of cortical granules from the egg. Cortical granules contain components which establish a permanent barrier to sperm entry.</span>
Photosynthesis is the process of creating or producing energy from sunlight. This is a unique process employed by plants and oxygenic bacteria like Cyanophyta or Cyanobacteria. It is the chlorophyll, the green pigment in plants, that is primarily responsible for this process.
On the other hand, respiration occurs in most other living beings. The body's respiratory system allows it to obtain oxygen from the surrounding air.
The difference is that plants need sunlight to photosynthesize while other living creatures do not need it for respiration.
Also, plants take in carbon dioxide and expel oxygen in photosynthesis. Meanwhile, other living creatures take in oxygen and expel carbon dioxide. Thus, establishing an important mutual relationship between the two processes.
Answer:
pigs
Explanation:
Influenza is an infectious disease caused by influenza viruses, which can be divided into four types A, B, C and D. In humans, influenza A and B viruses are known to cause epidemics, while A viruses are known to cause pandemics. Influenza viruses are also found in birds and mammals (e.g., dogs, cats, cattle pigs and horses). Cross-species virus transmission refers to the transmission process of infectious viruses between hosts from different species. Several viruses that may cause severe diseases in humans have originated from animal species, e.g., avian influenza A virus that can be transmitted to humans through an intermediate host (e.g., pigs). Other examples of cross-species virus transmission include the Ebola virus and Hantaviruses. It has been suggested that cross-species transmission is a common phenomenon in rapidly evolving viruses.
Answer: Research with embryonic stem cells may lead to new, more effective treatments for serious human ailments and alleviate the suffering of thousands of people.
Explanation:
