Answer is A
Firstly axon must reach the threshold level and then depolarisation occurs. Depolarisation phrase means sodium enters and potassium leaves the axon . Choice C can't be because main idea is the entering of sodium ions.
Spores are small single cell structures that are capable of growing into new organisms under the proper condition
<span>Seeds reproductive structures of more than one cell</span>
If the paramecium was not able to contract its contractile vacuole, it would be in danger of bursting. The cell would not be able to hold too much water. This would happen faster if the paramecium was in water with a low salt concentration because there is more water and less salt, so the water would accumulate faster.
The restriction endonuclease EcoRI cleaves the DNA sequence 5'-GAATTC-3' in such a way as to leave a 5' overhang, which is often referred to as a "sticky end". To 5' overhang with the complementary sequence this sticky end adhere.
- The palindrome EcoRI restriction site breaks DNA after G and creates sticky ends with AATT. G/corresponding AATTC's DNA sequence is CTTAA/G, where "/" designates the location of the peptide bond break.
- When the ssDNA sequence 5'-GAATTC'-3 is recognised by the restriction endonuclease EcoRI, a single-strand cut is made between the G and A nucleotides.
- At the ultimate end of double-stranded DNA, an overhang is single-stranded DNA. This can occur on either strand, and if it does, there will either be a 5' overhang on the 5' end of the strand or a 3' overhang on the 3' end of the strand.
To learn more about DNA.
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Answer:
C. Thrombocytes
Explanation:
Blood is a tissue composed of many cells, which include; red blood cells (erythrocytes), white blood cell (leukocytes), platelets (thrombocytes) etc. Of these three types of cells, thrombocytes also known as Platelets are small fragments of a cell with a disk-shape whose primary function is in blood clotting.
In contrast to erythrocytes, and leukocytes (monocytes, lymphocytes) as mentioned in the question, thrombocytes or platelets are not actual whole cells but rather small portion of a cell.
