BIOLOGY HIGH SCHOOL

The Krebs cycle takes place within the:A. mitochondria
B. lysosome
C. vacuole
D. cytoplasm

Answers

Answer 1
Answer:

Answer: A. mitochondria

Explanation:

The Krebs cycle is the set of reactions that drives to the complete oxidation of glucose. This occurs in the matrix of eukaryote mitochondria and the prokaryotyc cytoplasm. The main reagents of the Krebs cycle are acetate in the form of acetyl-CoA, water, and electron carriers. The main reagents of the Krebs cycle are acetate in the form of acetyl-CoA, water, and electron carriers. Reactions are catalyzed by enzymes where decarboxylases stand out (decarboxylation catalysts) and dehydrogenases (oxidation-reduction catalysts) leading to the formation of NADH).
Answer 2
Answer: The Krebs cycle occurs in the mitochondrial matrix (mitochondria) and generates a pool of chemical energy (ATP, NADH, and FADH2) from the oxidation of pyruvate, the end product of glycolysis. 
Hope this helps!

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Which one of the following theories of weight gain suggests that hypothyroidism is a cause for overweight or obesity?a. Fat cell theory
b. Genetics
c. Glandular disorder theory
d. Set point theory

Answers

Answer: c. Glandular disorder theory

Hypothyroidism is an endocrine system disorder in, which the thyroid gland does not produce adequate amount of thyroid hormone, which is required by the body to function properly. Glandular disorder theory suggests the fact that hypothyroidism is responsible for the increase in weight and obesity. Treatment of thyroid hormone, does not cause a significant reduction in weight.      
C. Grandular disorder theory

The four steps of the scientific method in order are hypothesis, observation, experimentation, and conclusion. True or false

Answers

False. The correct order is:
Question
Research
Hypothesis
Test the hypothesis
Analyze data
Conclusion
False
Question yourself about the topic.

Research information about your topic.

Construct a Hypothesis with a basic knowledge about the topic.

Test your hypothesis to experiment if your hypothesis was right.

Make an analysis of your data and draw a conclusion about your results. 

Communicate your results about the experiment with the science community.

Taller trees have a canopy arrangement of leaves where the upper leaves tend to be smaller than the ones below them. How does this arrangement of leaves benefit the plant?

Answers

This is because the leaves below need more light since they are less exposed to the sun. They are longer and can absorb more and photosynthesize more. The upper ones need less light and less materials since they are more exposed to the light.

Echinoderms, like sea stars, have nervous system

Answers

The answer is a simple radial nervous system.

Echinoderms do not have brains. Around their mouth, they have central rings from which nerves radially run into arms and along the body. Movement is controlled by the branches of those radial nerves.

Answer:

simple radial nervous system.

Explanation:

A pH of 12 indicates a(n) _____.

Answers

2 indicates a strong acid

12 indicates a strong base 


Alkaline i think it is

Answer options are:A- DECOMPOSITION
B- HUMAN EMISSIONS
C- PLANT RESPIRATION
D- PHOTOSYNTHESIS

Answers

B- Human Emissions is the correct answer
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