The answer it’s Compression
The answer to your question is:
<span>Stomata allow gasses to flow in and out of a leaf.
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Answer: The correct answer is-
C. Insulin secretion in response to high blood sugar.
D. Increased heart rate in response to exercise.
F. Proton pumping to maintain a proper pH level.
Homeostasis can be described as a tendency of living organisms to maintain a state of stable internal environment. In other words, it is the tendency to resist any change in the optimal conditions for survival.
It is brought by several regulatory mechanisms in the body such as regulation of body temperature, regulation of pH, regulation of osmolarity etc.
- Whenever there is high blood sugar level, insulin hormone is secreted from pancreas that reduces the blood sugar level.
- Heart rate is increased in response to exercise so that more oxygen is transported through blood circulation and more amount of energy is harvested through cellular respiration in the form of ATP ( required in exercise).
- Pumping of proton maintains a proper pH level ( such as in lysosomes, where pH is highly acidic, high proton concentration is regulated through proton pumping).
Thus, option C), D), and F) are the examples of feedback mechanisms that help in maintaining homeostasis.
From prophase through metaphase of mitosis, each chromosome has 2 DNA molecule(s), while from anaphase through telophase of mitosis, each chromosome has one DNA molecule.
Explanation:
Mitosis is a process in which 2 identical daughter cells are formed in which DNA gets split into two sets of chromosome.
Mitosis occurs in four phases: Prophase, metaphase, Anaphase and Telophase.
After the G2 phase the DNA amount increases and get ready for the division here sister chromatid are seen not chromosome.
In metaphase the chromosome align at the equatorial plate and readied to separate the sister chromatids easily. Each chromatid contains 1 DNA molecule, in this phase two sister chromatids are there so 2 molecules of DNA are present.
In Anaphase the sister chromatids are pulled towards the opposite ends. Each cell receives one chromatid which is now 2 chromosmes. So one chromatid will have one DNA molecule.
Answer:
vector – an organism that carries and transmits pathogens to humans and other animals.
Explanation:
