Answer:
These organelles are contractile vacuoles
Explanation:
Contractile vacuoles are intercellular pumps that are slowly filled with fresh water and eventually expel their contents outside the cell. Freshwater protists maintain the hydric equilibrium by contractile vacuoles that pump out the water of the cell and thus prevent the cell swelling induced by osmotic stress.
Answer:
it condenses the DNA so that it can fit inside the cell.
Explanation:
Supercoiling is a level of genome packaging and is important for the packaging of the DNA which is about 2m in length inside a nucleus that is about 6microm. Supercoiling refers to the over (positive supercoiling) or under winding (negative supercoiling) of a DNA strand, and is an expression of the strain on that strand. Supercoiling is in compacting DNA, and also allows for the regulation of access of transcriptional machinery and other biological activities to the DNA and in turn gene expression. Certain enzymes such as topoisomerases are able to change DNA topology to facilitate access of DNA replication or transcription.
Answer:
Gene A
Explanation:
If the three points test cross genotype A B C is crossed withe the double crossover progeny BC, the resulting gene will have A at the centre of the three loci
Answer:
c.) plants that grow quickly and have many uses
Explanation:
Cash crops are usually fast-growing crops that have many uses, so that framers can sell them and earn much more profit, that's why it is called "cash crops". Examples of cash crops include coffee, cocoa, cotton etc.
