Answer:
Metaphase
Explanation:
The M phase of the cell cycle is the phase during which the nuclear content and cellular content is distributed. The distribution of the nuclear content takes place in four phases: prophase, metaphase, anaphase and telophase.
The homologous chromosomes are aligned at the equatorial plate during the metaphase after which the chromosomes separate. The phase during which the separation of the chromosomes takes place is known as anaphase so the phase before the anaphase is the phase during which the chromatids are not separated that is the metaphase.
Thus, metaphase is the correct answer.
In mitosis, the last phase where chromatids are together is the metaphase. After this, during the anaphase, sister chromatids separate and move towards opposite poles.
In mitosis, the last phase where chromatids are together is the metaphase. During this stage, chromosomes line up across the centre of the cell and each chromosome is connected to a spindle fibre at its centromere. This ensures equal division of chromosomes into each of the two new cells. After the metaphase, during anaphase, the centromeres of each chromosome separate and the sister chromatids move away from each other towards opposite poles.
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Answer:
The correct answer will be-
1. make an observation
2.ask questions
3.construct a hypothesis
4. test the hypothesis
5. analyze the results
6. make conclusions
7.communicate the results
Explanation:
A scientific method is a systematic approach to answer and explain the natural phenomenon of nature.
The scientific method begins with making an observation based on which the researcher can frame scientific questions which could be answered. The researcher must do background research on the same question and predict the most probable reason in the form hypothesis.
This hypothesis must be tested by performing the experiments designed to test the hypothesis. Based on experiments results must be collected and analysed as a piece of evidence to make conclusions regarding the hypothesis. These results must be communicated through poster presentations or in published form in journals after peer-reviewed.
Thus, the steps are arranged in accordance with the scientific method.
The sequence of steps in a scientific investigation includes making observations, asking questions, constructing a hypothesis, testing the hypothesis, analyzing the results, and communicating the results.
The sequence of steps in a scientific investigation is as follows:
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B. Postzygotic
C. Physical
Light is a wave but does not have frequency as a property.
Light is exactly similar to water and sound.
Light is a converse wave.
Answer:
Light is a transverse wave.
Explanation:
Light is a transverse wave. Its particles vibrates or oscillates in the direction perpendicular to the direction of propagation of wave.
Light wave also have both electric and magnetic field component. So, light waves are also called as electromagnetic wave. Another type of wave is longitudinal wave. In this type, the particles of wave are in the direction of propagation of wave.
Hence, the correct option is " light is a transverse wave ".
Answer:
Use of solar energy or wind energy.
Explanation:
The human activity that does not affect the earth system can be conversion of solar energy, wind energy etc. Since solar energy is produced by sun, it causes no harm to the earth system. Same as wind energy which is collected from the blowing winds by the help of windmills.
The process of translation involves three main types of RNA, including mRNA, tRNA, and rRNA, working together to decode information from DNA and build proteins in the ribosomes.
During the process of translation, mRNA decodes information from the original DNA master plan to build proteins in the ribosomes. This process involves three key types of RNA: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). The mRNA carries the genetic information copied from DNA in the form of a series of three-base code words, each of which specifies a particular amino acid.
The tRNA molecules act as adapter molecules, each able to carry a particular amino acid and recognise the appropriate codon in the mRNA. Through a series of steps, the tRNA molecules bind onto the mRNA and add their amino acid to the growing chain of amino acids that ultimately forms a functional protein.
Last but not least, the rRNA molecules come together with particular proteins to form a functional ribosome that facilitates the assembly of the amino acids into the new protein.
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an act of recognizing and noting an occurrence by using the senses
a possible explanation of a scientific question based on observation
an explanation that uses data to support or reject a hypothesis
Answer;
An explanation that uses data to support or reject a hypothesis
Explanation;
-Conclusions summarize how your results support or contradict your original hypothesis. The conclusion is simply a report about what you learned based on whether the results agree or disagree with your hypothesis.
The easiest approach to condense the findings of an experiment is to write a conclusion, which is the last stage in the scientific process. An explanation that uses evidence to confirm or disprove a hypothesis is called a conclusion.
It is a statement that encapsulates the experiment's findings and may be applied to forecast the outcomes of subsequent trials. A conclusion is not a written account of what happened during an experiment or the process of observing and recording something with the senses.
An answer to a scientific inquiry that is based on observation and data analysis is called a conclusion. It is an overview of the information that has been gathered and examined in order to reach a reasonable judgement.
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