BIOLOGY HIGH SCHOOL

Scientists routinely explore whether two different animal species have evolved from a recent common ancestor. _______________ is the LEAST useful technique to help with this determination.a. Analysis of strands of DNA
b. Comparisons of bones and muscles
c. Comparisons of items eaten for food
d. Studies of embryos during development

Answers

Answer 1
Answer: The least useful technique in the study is C. Comparisons of items eaten for food. This is the least scientific method of studying two different species because many animals can want the same food and not have any relation with each other. It isn't considered an important factor in determining the similar characteristics of species, especially in terms of genetic makeup.
Answer 2
Answer:

The CorreCt answer is C

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Answers

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in grammatically correct sentences trace the path of reactants for photosynthesis as they enter the leaf

Answers

Through the openings of the leaf called stomata, the Carbon Dioxide from the outside enters then diffused with water into chloroplasts. The stroma which surrounds the chloroplast will form the thylakoids. Inner compartments will form within chloroplast from the spaces in between each of the thylakoid. These thylakoids contains chlorophyll which is capable of absorbing solar energy. 

Final answer:

During photosynthesis, carbon dioxide and water enter the leaf through the stomata and xylem vessels, respectively. They then move to the chloroplasts where they are converted into glucose and energy-rich molecules.

Explanation:

During photosynthesis, reactants enter the leaf through the stomata, which are small openings on the surface of the leaf. The main reactants for photosynthesis are carbon dioxide (CO2) and water (H2O). Carbon dioxide enters the leaf through the stomata, while water is taken up by the roots and transported to the leaves through a network of xylem vessels.

Once inside the leaf, the reactants for photosynthesis move to the chloroplasts, which are specialized organelles where photosynthesis takes place. Within the chloroplasts, CO2 is converted into glucose through a series of chemical reactions called the Calvin cycle. Water is split into oxygen and hydrogen ions, and the hydrogen ions are used to create energy-rich molecules called ATP and NADPH, which are used in the subsequent steps of photosynthesis.

In summary, the reactants for photosynthesis, carbon dioxide and water, enter the leaf through the stomata and xylem vessels, respectively. They then move to the chloroplasts where they undergo chemical reactions to produce glucose and energy-rich molecules.

Learn more about Photosynthesis here:

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Answers

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Answer:

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