Answer:
11. Float
12. Bacteria
13. Polymer.
14. Hydrogen.
15. Water.
16. Climatic.
17. Prokaryotic.
18. Length.
19. Large.
20. Frequency.
Explanation:
11. Damaged seeds would float on top of water. This is because they are typically empty and as such lacking in any form of nutrient.
12. Cholera is caused by bacteria. This bacteria is scientifically called Vibrio cholerae.
13. Like synthetic fibre, plastic is also a polymer.
14. Metals react wih acids to produce hydrogen gas.
15. The Fire produced by oil cannot be controlled by water.
16. Migratory birds fly to far away places because of climatic changes.
17. Cell without well organised nucleus are called prokaryotic cells.
18. Time period of a pendulum depends on its length. Thus, the time period of a pendulum is directly proportional to its length i.e as its length increases, the time period also increase.
19. The size of pupil becomes larger when you see in dim light.
20. Shrillness of a sound is determined by the frequency of vibration. A shrill sound refers to a type of sound that is typically sharp, high pitched and as such has higher frequency.
Answer:
Two different kinds of flasks were used - regular and swan-necked
Explanation:
In his experimental design, Louis Pasteur used tow flasks. One of the flask was regular flask and the other was swan necked. He used these flasks to boil a meat broth. In the swan neck flask, air could enter but microorganisms could not. As a result, there was no grown seen in that flask. In the regular flask, microorganisms could enter and they spoiled the meat. Hence, the two different types of flasks were his experimental design.
<u>Correct sequential order for the following processes of protein synthesis are as follows:</u>
- DNA strands unwind and separate
-
mRNA copies DNA according to complimentary base pairing
- mRNA leaves the nucleus
- tRNA’s anticodons bring amino acids to the corresponding mRNA codons at the ribosomes
- amino acids bind to each other making a polypeptide
-
a stop codon is reached, the newly formed a protein is released to go do its job for the cell
Option A --> B --> C --> E --> D -->F
<u>Explanation:</u>
Protein synthesis involves three major steps which are Replication of DNA, which is then transcribed and then translated to form protein, so the steps are Replication, Transcription and Translation.
Firstly, the DNA is a double stranded molecule which needs to be unwind as a replica where one of the strand becomes the template strand and transcription of strand occurs with mRNA.
mRNA thus leaves the nucleus and reaches cytoplasm where translation takes places and the tRNA provides specific anti codons to the mRNA codons and the amino acids are formed.
All amino acids bind to each other in order to make a polypeptide and hence the protein molecule newly formed is released to the cell.
----------------------------------------------------------
The answer is C. F
----------------------------------------------------------
We see the moon because the sun's light reflects off it. So the phases change depending on how much the sun reflects of it. The moon circles around the Earth so at certain times there will be a full moon and at certain times a new moon and everything in between.
