Ayuda con la tarea de biología
La parte más complicada de aprender biología es cómo hacer que los estudiantes comprendan el mundo microscópico de la biología, cómo entrar en las células y explorar genes y moléculas. Sin embargo, con el desarrollo de la tecnología de la información, la ayuda con la tarea de biología puede desempeñar un papel importante cuando ni las palabras ni las imágenes pueden explicar completamente los puntos de biología.
QuestionAI es un software de aprendizaje de biología en línea que le ayuda a aprender y dominar el conocimiento de la biología, incluida una variedad de experimentos y ejercicios correspondientes, que es fundamentalmente diferente del ayudante común de preguntas de biología. Aquí, puede simular experimentos para reproducir los escenarios experimentales, de superficial a profundo, capa por capa, para aprender y comprender los puntos de conocimiento.
- 16 In the mountains of Braril, Barbacenia tomentosa and Barbacenis macrantha-two plants in the Velloriacene family establish themselves on soilless, nutrient-poor patches of quartzite rock. Plant ecologists Anna Abrahão and Patricia de Britto Costa used microscopic analysis to determine that the roots of B. tomentosa and B. macrantha, which grow directly into the quartzite.have clusters of fine hairs near the root tip,further analysis indicated that these hairs secrete both malic and citric acids. The researchers hypothesize that the plants depend on dissolving underlying rock with these acids,as the process not only creates channels for continued growth but also releases phosphates that provide the vital nutrient phosphorus. Which finding, if true,would most directly support the researchers hypothesis? A) Other species in the Velloziaceae family are found in terrains with more soil but have root structures similar to those of B. tomentosa and B. macrantha. B) Though B.tomentosa and B.macrantha both secrete citric and malic acids, each species produces the acids in different proportions. C) The roots of B. tomentosa and B.macrantha carve new entry points into rocks even when cracks in the surface are readily available. D) B. tomentosa and B. macrantha thrive even when transferred to the surfaces of rocks that do not contain phosphates.
- What is meant by the term "limiting resources" in marine ecology? Provide some examples of limiting resources. Type here. 2 How does the concept of carrying capacity influence the growth and stability of marine
- Polar bears 5. How do the zooplankton gain energy? square
- Case Closed? While Kominski's mDNA was a match to that found on the shawl, the case is not as airtight as it might seem. Mitochondrial DNA is not the same as nuclear DNA. It is passed down separately from nuclear DNA and is inherited through the maternal line. Nuclear DNA can be used to make a very clear match between a suspect and evidence but it breaks down over time and couldn't be used in this case. While mitochondrial DNA can be used to exclude suspects, it can not be used to confirm with 100% certainty the identity of a suspect. In fact,it is likely that 1 in 50 to 1 in 100 individuals in England would also have a match to the mitochondrial DNA found on the evidence. In addition to the uncertainty left by the DNA match questions have been raised about the authenticity of the shawl as well as how it was handled. There is no established chain of custody and therefore it can not be proven that the shawl belonged to Eddowes or was at a crime scene. The origin of the article of clothing relies heavily on family stories. Doubt has also been raised about when the mDNA samples were left. As Eddowes had multiple clients over a long period of time it is possible that the stain left behind was not left on the night of the murder but on previous encounter. your fhoughts. 29. What does mDNA stand for? 30. How is mDNA passed down? 31. In what ways is mDNA useful in forensics? 32. Why couldn't nuclear DNA be used in this case? 33. What is a chain of custody? Do you think there is enough evidence to link Kominski to the murders? Why or Why not? Do you think Jack the Ripper could have gotten away with the murders today?
- Modified True/False (A) or fatse. If false, change the identified word or phrase to make the statement true. Worth 1 point each. (6) __ 10) If the alleles for a trait did not segregate during gamete formation, offspring,would always show the trait of at least one of the parents. __ __ (B)If an organism is heterozygous for a particular gene , the two different alleles will be separated during anaphase II of meiosis,assuming that no crossing -over has occurred. __ __ Mitosis results in two cells, whereas meiosis results in one cell. __ Short Answer Answer each of the following questions completely. Answers do NOT have to be in complete sentences. Spelling and grammar are important. NO abbreviations. Worth 2 points each. ) What are alleles?
