8. eukaryotic cell
9. this organelle are structures that have specific jobs within cells
10.plants *I believe*
Answer: The correct sequence is B, D, A, C
Explanation: During DNA replication, first, the enzyme helicase unwinds the double-stranded DNA molecule, creating two separate single strands with their bases exposed.
The two single strands each serves as a template for the synthesis of a new strand and the enzyme DNA polymerase then adds free nucleotides that are available in the nucleus to the primer to form new complementary strands. This results in two identical copies of DNA molecules.
Answer No 1:
During the interphase, the genetic material is copied so that each daughter cell can receive equal and right amount of genetic material. The right amount of the genetic material is a crucial step for every daughter cell to survive.
Answer No 2:
Embryonic stem cells have the ability to convert into any type of cell type. Specialized cell types can make specialized cells. Scientists are working on producing stem cells which can cure various diseases like paralysis or brain damaged cell.
Answer No 3:
By the process of meiosis, the number of chromosomes is reduced to half in the sex cells. When an egg cells and the sperm cell unite in the process of fertilization, the number of chromosomes become diploid again. Hence, the number of chromosomes gets maintained in the embryo in this way.
When salt or sugar is added water moves from inside the cells to the outside solutes by osmosis, causing a partial dehydration of the cell, known as plasmolysis, that interferes with microorganism multiplication.
Answer:
The bee travelled a total distance of 11.7 metres, in order to collect pollen from a flower and then back to its hive.
Note: The question is not clearly stated. A similar but clearly stated question is given below:
A bee flew 840 cm and landed on a flower to collect some pollen. Then the bee flew another 330 cm to get back to her hive. How many meters did the bee travel?
Explanation:
Th distance travelled by the bee is the sum total of all the ground covered by the bee.
The initial distance travelled by the bee to get to the flower = 840 cm
After collecting pollen from the flower, the distance travelled by the bee to get to its hive = 330 cm
The total distance travelled by the bee = 840 cm + 330 cm = 1170 cm
The distance covered in centimetres is then covered to metres
100 centimetres = 1 metre
Therefore, 1170 cm = 1170 cm × 1 m /100 cm = 11.7 m
Therefore, the bee travelled a total distance of 11.7 metres, in order to collect pollen from a flower and then back to its hive.