A dichotomous key helps you identify unknown specimens based on their traits because there are only two options available per trait. Selecting one from the two options (usually contrasting characteristics) from each step leads to smaller and smaller groups until the option is reduced to single and unique trait of an organism.
Considering you need to identify an organism. So, on the top of they key is animal with options: (a) with red blood cells and (b) no red blood cells. The option you will select is no red blood cells and under option b, you’re given two choices again: (a) hard bodies and (b) soft bodies. You’ll select soft bodies, then two options again are given: (a) with shell and (b) without shell. The option you’ll select would be without shell, and so on.
Answer:
The correct answer is-forcing blood from the heart into the major arteries
Explanation:
Heart is not made up of smooth muscles rather it is mainly made up of a specialized type of muscle called cardiac muscle which helps in the contraction of heath that results in the forcing blood from the heart into the major arteries.
Cardiac muscle is straited muscle but smooth muscle is not straited muscle. These smooth muscles are mainly present in the organs which have hollow walls like urinary tract, digestive tract, blood vessels, etc.
Therefore forcing blood from the heart into the major arteries is not a function of smooth muscle tissue.
Answer:
А. The recombinant bacterium will produce human insulin using its own transcription and translation machinery
Explanation:
This question is describing genetic engineering, which aims at producing desirable traits in organisms. In this case, the gene that encodes insulin protein in humans is inserted into the plasmid (extra-chromosomal DNA) of a bacterium. The plasmid is then inserted back into the bacterium to become a RECOMBINANT BACTERIUM.
The recombinant bacterium containing the insulin gene will produce human insulin (protein) using its own transcription and translation machinery. This genetic engineering procedure is used to mass produce insulin protein, which is administered as medicine to humans who cannot produce the protein.
Answer:
Where ever light and the organelles to conduct photosynthesis meet
Explanation:
For example, leaves in a plant have chlorophyll, which can create glucose using light. All it needs is the material to do so. I can't really say that much. :D