Answer:
The experimental results cannot be reproduced.
Explanation:
The ability to follow a specific set of procedures and achieve the same results is one of the key parts of the scientific method. If the results cannot be replicated, the study is invalid. Unfortunately, results of invalid studies are sometimes announced to the public before replication attempts can be made to invalidate the study. Trying to reverse public belief at that point can be impossible.
Answer: prophase
Explanation:
Each chromosome becomes condensed (pact together) which makes it more visible to see it
There are many different sources of carbon!
Some of the following can be of those sources:
Fossil fuel
Carbon dioxide
Natural gas
Coal gases
Petroleum
There are others but I hope this is enough. Good luck! :)
Answer:
E. On in the presence of lactose and absence of glucose
Explanation:
Expression of lac operon synthesizes the enzymes required for catabolism of lactose sugar. When both glucose and lactose are available, glucose is preferred as a nutrient and the lac operon is not expressed.
Lac operon is expressed only when glucose is absent in the medium and lactose is present. If any of the two conditions deviate, the operon is not expressed.
In the absence of glucose and the presence of lactose, the repressor is rendered inactive to bind to the operator. RNA polymerase enzyme is free to bind to the promoter and continue the process of transcription.
The reduced levels of glucose increase the cAMP levels which in turn bind to the Catabolite activator protein (CAP). CAP is a positive regulator that binds to the promoter to facilitate the transcription of the operon by RNA polymerase.
1.c
2.d
1. is c because of the fact an asexual species have no mates there for d is out of the question which eliminates B. when genetic diversity is mentioned that means there is more that one factor that gives advantages to its survival because they mated with another species
2. is d because I remember from class have no explanation lol
