"Alkenes can be used to make polymers. Polymers are very large molecules made when smaller molecules join together, end-to-end. The smaller molecules are called Monomers. In general: lots of monomers molecules ----- a polymers molecule"
Answer:
Option (d).
Explanation:
Mutation may be defined as the sudden, heritable change in the nucleotide sequence of the organism. Mutation may occur due to the errors in DNA replication or may occurs due to the mutagens.
Joshua and Lederberg experiment explains that mutation is the non adaptive and random process that occur in the organism. He used the replica plating of E.coli and grows them on streptomycin drug. The bacteria was grown on the the primary plate and they are transferred to the secondary plate with streptomycin drug in the growth environment. The resistant strain of bacteria grows in the streptomycin environment.The pattern of bacteria growth on the plate explained that mutation occurs randomly and it is a non adaptive process.
Thus, the correct answer is option (d).
Answer:
There are advantages and disadvantages of sexual reproduction, compared to asexual reproduction. The main issues are: Advantages: More variation assists with survival. It increases the chance that at least some offspring of a parent survive.
Explanation:
Answer:
The correct answer is option B, that is, cerebral palsy.
Explanation:
An array of disorders, which influence the tendency of an individual to move and maintain posture and balance is termed as cerebral palsy. The condition is most commonly witnessed in childhood and is a motor disability associated with the poor functioning of the brain. The condition results in muscle weakness as part of the brain that helps in controlling muscles get affected.
The signs and symptoms of cerebral palsy vary, for example, individuals suffering from the extreme form of cerebral palsy would need the assistance of certain equipment in order to move. On the other hand, individual suffering from mild cerebral palsy can walk to a certain extent, however, might also need help in order to do that.
Cerebral palsy can result in many conditions based on the part of the brain getting affected like stiff muscles, poor balance and coordination, and uncontrollable movements. Thus, in the given case, Sammy is suffering from cerebral palsy.
Answer:
it provides energy to the body.
