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katovenus [111]
3 years ago
10

The use of oxygen-18 (heavy oxygen) has aided biologists in determining that O2 released in photosynthesis comes from the chemic

al breakdown of water. Which organisms did the biologists most likely use in their investigation? A algae B paramecium C arthropods D fungi
Biology
1 answer:
Margaret [11]3 years ago
8 0

Answer:

The correct option is A. Algae

Explanation:

Algae is the best possible answer because the process of photosynthesis can be carried out only by plants, algae and cyanobacteria.  Hence, option A is correct. These organisms are called autotrophs as they are capable of making their own food.

Other organisms like paramecium, arthropods and fungi are not capable of photosynthesis. These organisms like arthropods are called heterotrophs. They do not make their own food and feed on other organisms for food.

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The classical point of view is that, during mitochondrial respiration, three ATP molecules can be generated from one molecule of
Stells [14]

Answer:

38

Explanation:

In eukaryotic cells, the maximum production of ATP molecules generated per glucose molecule during cellular respiration is 38, i.e., 2 ATP molecules from glycolysis, 2 ATP molecules from the Krebs cycle, and 34 ATP molecules from the Electron Transport Chain (ETC). <em>In vivo</em> (i.e., in the cell), this number is not reached because there is an energy cost associated with the movement of pyruvate (CH3COCOO−) and adenosine diphosphate (ADP) into the mitochondrial matrix, thereby the predicted yield is approximately 30 ATP molecules per glucose molecule. In aerobic bacteria, aerobic respiration of glucose occurs in the cytoplasm (since bacteria do not contain membrane-bound organelles such as mitochondria), and thereby, in this case, it is expected that aerobic respiration using glucose yields 38 ATP per glucose molecule.

3 0
3 years ago
Birds, insects, and many reptiles excrete nitrogenous waste in the form of uric acid, which _____. see concept 44.2 (page 980)
Nadusha1986 [10]
Birds, insects, and many reptiles excrete nitrogenous waste in the form of uric acid, which saves water. 
Nitrogenous waste in the body tend to form toxic ammonia, which must be excreted. Mammals such as human excrete urea, while birds, reptiles, and some terrestrial invertebrates produce uric acid as waste in the form of a white paste or power. The production of uric acid involves a complex metabolic pathway that  is energetically costly in comparison to processing of other nitrogenous wastes such as urea or ammonia, it has the advantages of reducing water loss and, hence, reducing the need for water.
7 0
3 years ago
Transcribe the following DNA strand to an mRNA Strand.<br> 'ATAGCGATAATA'
Helen [10]
TATCGCTATTAT here is the answer give me a brainless answer
5 0
3 years ago
Nicotine increases atherosclerosis by the release of which neurotransmitter?
iVinArrow [24]

Adrenaline 

Nicotine is a substance that is addictive in nature commonly found in cigarette, that affect the nervous system by binding to the receptors in the brain and other part of the body. Atherosclerosis is the loss of elasticity or thickens of arteries walls. However, nicotine increases the release of neurotransmitter adrenaline into the blood which subsequently cause the development of atherosclerosis.

3 0
3 years ago
How do I know the phenotype and genotype percentage on a punnet square?
Nesterboy [21]

Answer:

Phenotypes are physical attributes. Genotypes are the alleles.

The phenotypes are 75% green peas and 25% yellow peas. This is because the capital G is a dominant allele and green is the dominant attribute and as long as 1 G is present, then the pea will appear green.

The genotypes are 25% GG, 50% Gg, and 25% gg.

Please thank!

3 0
3 years ago
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