Answer:
Explanation:
When viruses cause an infection, they spread their DNA, affecting heathy cells' genetic makeup and potentially causing them to turn into cancer. HPV infections, for instance, cause the virus' DNA to combine with the host's DNA, disrupting the normal function of cells.
Answer:b.are required for the expression of specific protein-encoding genes
Explanation:
Transcription factors are proteins that bind to enzyme RNA polymerase to aid transcription( coping of information on DNA to an intermediate mRNA.
They control the expression of a particular gene. A transcriptor can be a repressor or enhancer. A repressor when they inhibit the action of RNA polymerase by blocking it from attaching to promoter sequence or enhancer by binding to RNA polymerase to enhance transcription.
Transcriptor protein can work alone or work with other protein such as silencer.
Adenine
Guanine
Cytosine
Thymine
Nitrogenous bases
Phosphate groups are polar and allow the cell to exist in water.
Answer:
because of inefficiency
Explanation:
The organisms that eat the primary consumers are meat eaters (carnivores) and are called the secondary consumers. ... Because of this inefficiency, there is only enough food for a few top level consumers, but there is lots of food for herbivores lower down on the food chain. There are fewer consumers than producers.
