An amino acid is given by the general formula
R-CH(NH2)-COOH
where R group varies.
Answer:
After a cell was treated with a certain chemical, the ribosomes stopped functioning. The cell activity immediately affected by this change in ribosome function is protein synthesis.
Explanation:
The basic structural units of all living things are known as cells. Inside the cells, specialized structures called ribosomes are present, which synthesize proteins. The protein synthesis in a eukaryotic cell consists of two processes, transcription and translation.
The transcription process takes place in nucleus, where the information from a DNA strand is copied into a single stranded messenger RNA (mRNA) molecule using RNA polymerase enzyme. During the ending of transcription, the completed mRNA strand detaches from DNA and exits the nucleus and goes into a ribosome in the cytoplasm. In the ribosome, translation occurs where the genetic code in mRNA is read and protein is synthesized. These proteins are used by cells to perform important functions such as repairing cellular damage, maintain cellular structure, create hormones, cell division etc.
Answer:
C) behavioral isolation
Explanation:
The mechanisms of reproductive isolation that prevent the formation of a zygote by interbreeding between the individuals of two different species are called pre-zygotic isolation mechanisms. Behavioral isolation is one of such pre-zygotic isolation mechanisms. It includes the exchange of specific signals between the individuals of the same species before mating. Such specific courtship behaviors represent behavioral isolation.
Different species of fruit flies exhibit specific courtship behaviors such as fighting and display to attract the females of the same species only. These signals are not identified by females of the other species. It represents behavioral isolation.
Answer:
Hello!
The answer is ventricular diastole.
Explanation:
Tricuspid Valve Stenosis:
Tricuspid Valve Stenosis is the narrowing or stenosis of the tricuspid valve located between the right atrium and right ventricle.
This is a rare heart disease that can be caused by infective endocarditis and rheumatic fever.
This condition entails restricted blood flow from the right atrium to the right ventricle. Untreated cases can result in an enlarged or hypertrophied atrium and a smaller ventricle.
Answer:
PLATO
The conservationists effectively identified a problem, specifically that young penguins were underweight. They fed the young birds, increasing the probability that they would reach reproductive age. The program also ensured that the young penguins could survive in the wild, by teaching them survival skills. A limitation of this program is that after the birds return to the wild, they face the same problems of high competition and limited food supply. Although the program increases their chances for reproduction, it doesn’t guarantee that they’ll be successful.
