Within 2 days before and on the day of ovulation; 5 days
Answer:
Pros of HeLa cells:
- HeLa cells are immortal ,easy to maintain and can be kept alive.
- HeLa cells easily contaminate cell lines and thus can be incorporated easily into target tissues.
Cons of HeLa cell:
- The HeLa cells can easily contaminate cell lines and a lack of regular monitoring leads to unwanted contamination of cell lines resulting in wastage.
Explanation:
HeLa cells are immortal cells that are used in scientific and medical research. These were obtained from Henrietta Lacks , a cervical cancer patient. These cells are well known for their immortality, rapid growth and high contamination rate. These were unique cancerous cells that kept on dividing and remained alive easily.
Answer:
a contracting mass of gas which represents an early stage in the formation of a star, before nucleosynthesis has begun.
Explanation:
This is false. Well water is not surface water because it is under the surface (the ground).
Answer:
The correct answer is
A tree makes glucose using the sun's energy, and a mouse gets glucose by eating other living things.
Explanation:
A tree uses photosynthesis to create energy in the form of glucose. On the other hand, a mouse cannot use the sun's energy to produce glucose through photosynthesis. Therefore the mouse must obtain the glucose by consuming other organisms, such as plants and insects.
hope it helped :)
mark me brainliest!