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iren [92.7K]
4 years ago
7

Chromosomes move to the middle of the spindle during what phase

Biology
1 answer:
egoroff_w [7]4 years ago
3 0
During mitosis, chromosomes move to the middle of the spindle during metaphase. Mitosis is a type of cell division in which the parent cell divides into two daughter cells with each daughter cell receiving the same number of chromosomes as the parent cell. Mitosis has the following phases: prophase, metaphase, anaphase and telophase.
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Martin is studying sucrase activity. He added sucrose solution + sucrase solution + buffer of pH 5.6 in two tubes. He incubated
lukranit [14]
<span>B, enzymes will denature at that temperature. Sucrase has an optimal temperature of about 37 degrees celsius so 1000 would definitely be too high for them to work.</span>
3 0
4 years ago
Read 2 more answers
Jackie read that Aloe vera promote healing on burned tissue. She decided to investigate the effect of various amounts of Aloe ve
Anon25 [30]

Answer:

Hypothesis: IF Aloe vera is applied, THEN the number of regenerated planaria will increase

Independent variable: The different amounts of Aloe vera applied

Dependent variable: Number of regenerated planaria

Control group: The parts of planaria that received 0% of Aloe vera

Conclusion: The Hypothesis should be rejected

Explanation:

Hypothesis in an experiment is a testable explanation to an observed problem. It aims at proferring a possible solution/answer to a question. In this experiment, the hypothesis will be: IF Aloe vera is applied, THEN the number of regenerated planaria will increase

The independent variable refers to the variable being manipulated or changed in the experiment while the dependent variable is the variable that responds to the changes made to the independent variable. The dependent variable is the measured variable. In this experiment, the independent variable is THE DIFFERENT AMOUNTS OF ALOE VERA APPLIED while the dependent variable is THE NUMBER OF REGENERATED PLANARIA.

The control group of an experiment is the group that differs from the experimental group by not receiving the experimental treatment (independent variable). In this experiment, the control is the PART OF PLANARIA THAT RECEIVES 0% OF ALOE VERA.

Based on the outcome of the experiment, it can be seen that there was an initial increase in number of regenerated planaria but the number later declined, hence, the hypothesis given will be REJECTED as it doesn't explain the declination.

4 0
4 years ago
There is a new trend to focus on dopamine receptor sensitivity rather than on dopamine itself because
Alex

Answer:

There is no scientific evidence to prove that people with schizophrenia ingest dopamine capable of accumulating excess in the body.

Explanation:

Although you did not specify that your question is associated with the origin of schizophrenia in people, we can see that this is the main topic of your question, due to its context. This is because scientists have been striving to find the origin of this disease, in order to be able to combat it in the early stages. Although many scientists believe that the origin of this disease is associated with excessive intake of dopamine, there is not strong enough scientific evidence to show that this is true. Because of this lack of evidence, filmmakers have focused on associating the origin of the disease with the sensitivity of the dopamine receptor and not with the dopain itself.

5 0
3 years ago
What is the role of science and technology for the betterment of human living?
Maslowich

Answer:

Science and technology improve the our lives. This is thanks to the many discoveries science have gifted us. When it comes to science, scientists have discovered all type of drugs that helped us raise our life expectancy. Technology advances at the same time science does, as we discover new natural resources  to use we make simple task faster and easier with technology, also makemas our health care system more acurate and efective

3 0
2 years ago
It is necessary for the gene that codes for the repressor of lac operon to be near the structural genes. True or false
Dima020 [189]

Answer:

FALSE!!!!!!

Explanation:

Lacl is the name of the gene that encodes the lac repressor. It undergoes continuous transcription to make the lac repressor always present.

Even though It happens to be found near the lac operon, it is not a member of the operon and is expressed separately. Therefore, it is not necessary for it to be near the structural gene

7 0
4 years ago
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