Answer:
Mechanical advantage of block and tackle
Explanation:
A block and tackle is characterized by the use of a single continuous rope to transmit a tension force around one or more pulleys to lift or move a load. Its mechanical advantage is the number of parts of the rope that act on the load. ... Thus, the block and tackle reduces the input force by the factor n.
Answer:
Add a catalyst
Explanation:
A chemical reaction can be sped up by many factors. ... Add a catalyst (A substance that reduces activation energy, speeding up the reaction) Increase the concentration of reactants. Increase the concentration of catalysts
Answer:
Generally the primary organic molecules in cells which support the metabolic and biochemical process of the cells are bio molecules Theses are Carbohydrate
Protein
Lipids
and Nucleic acids of DNA and RNA. They can also be the minute hormones and metabolites present in the cells.
Generally, CHO provide structural supports to the cells,and acts as sources of energy.
Protein forms most enzymes for biochemical reactions,and aids movements, through muscle contractions. Besides,muscles are made of protein.Therefore protein forms the structural basis of the muscles.This aids movement and locomotion for support.
Lipids are the richest source of energy for the cell,and provides support the cells membrane.
The nucleic acids,are primary concerned with the transfer of inheritable characteristic from mother cells to the daughters during reproduction.While the DNA is the genetic information been transferred,the RNA is the vehicle for transmission of the genetic information as protein from the parents' nucleus to the offspring. Thus the nucleic acid roles it for transmission of genetic information as genes,(DNA) and translation of these genes as proteins(RNA).Hence,Nucleic acids does not participate in the cells' support.
Therefore
Explanation:
I don’t know 22 but I think 21 is B
The adaptations should one expect of the seed coats of angiosperm species whose seeds are dispersed by frugivorous (fruit-eating) animals, as opposed to angiosperm species whose seeds are dispersed by other means are:
- (A) The seed coat, upon its complete digestion, should provide vitamins or nutrients to animals.
- (D) The seed coat should be able to withstand high acidity, and the seed coat should be resistant to the animal's digestive enzymes.
<h3>What are angiosperm species ?</h3>
Angiosperms serves as those plants that produce flowers and they have ability to bear their seeds in fruits.
These species are the largest and can be described as the diverse group within the kingdom Plantae.
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