Answer:
Some factors that may cause a decrease in population size:
- a high mortality rate due to an infectious disease
- a low birth rate
- a high mortality rate due to interspecific competence
- a high emigration rate
Explanation:
In biology, population size (N) refers to the total number of individuals in a given population. The four main factors that affect population size are birthrate (natality), death rate, immigration rate (i.e., the number of individuals of a given species that move into a population), and emigration rate (i.e., the number of individuals of a given species that move out of a population). Both birthrate and immigration are known to increase N, while death rate and emigration are rates known to decrease this value.
Tissues invaded by viruses, which attempt to replicate themselves by taking over cellular machinery, secrete small proteins called <span>interferon</span> to protect nearby cells and hinder further multiplication of the viruses.
We presented with several statements after the question. Only one of these statements are correct.
DNA replication is the process in which a single strand of DNA, acting as the parent strand, forms two new strands of DNA. DNA transcription is the process of copying the information of the DNA strand and delivering this information into a strand of mRNA. These processes may sound similar, but there are key differences. We must look at the building blocks of DNA and RNA. Both structures are composed of four different bases, however, only three of these bases are shared between structures and they each have a unique fourth base. In DNA, the fourth base is thymine and it is uracil in RNA. We already established that DNA replication forms new strands of DNA, which would use thymine by default. DNA transcription results in formation of mRNA which would therefore use uracil.
The correct statement from the choices provided is the following:
Thymine is used in replication while uracil is used in transcription.
I would say A because they both have shells
Answer:
Option A is correct answer.
Explanation:
- Researchers sort out the living scene utilizing a procedure called scientific classification, which is the exploration of characterizing life forms dependent on shared structures, capacities, and connections to different living beings. For instance, living beings can be arranged dependent on their cell structure. Living beings that have cores are eukaryotes.
- Scientific categorization is part of science that gatherings and names creatures dependent on investigations of their distinctive attributes
