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atroni [7]
3 years ago
11

1 point

Biology
2 answers:
BlackZzzverrR [31]3 years ago
6 0

Answer: c.   the ratio of the mass of potassium-40 to stable potassium isotopes

Explanation:

Anarel [89]3 years ago
5 0
I want 10 point lol the answer is 40
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PLEASE HELP!!!! Which of the following were responsible for changing the oxygen content in
Nesterboy [21]

Im not 100% sure but the best answer I can give is Prokaryotes because they came to be around the time oxygen did as well.

4 0
2 years ago
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Energy from the sun comes from fusion. What happens during that reaction?
dmitriy555 [2]
Hey there, 

Your answer is:

<span>Hydrogen turns into helium. 
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8 0
4 years ago
Compare and contrast three metabolic pathways by choosing whether the statement applies to aerobic respiration. Check all that a
Arte-miy333 [17]

Answer:

The correct answer will be options

1. Process includes glycolysis.

2. Between 2 and 38 ATP are produced per molecule of glucose input .

3. Much or most of the ATP produced is produced by oxidative phosphorylation.

4. Process involves electron transport and chemiosmosis.

5.  End products are CO₂ and H₂O.

6. Process involves the Krebs cycle.

Explanation:

Cellular respiration is the oxidative process which involves the breakdown of food molecules like glucose, amino acids and fats to release heat and energy in the form of ATP.

In the presence of oxygen or aerobic respiration it undergoes four stages: glycolysis, link reaction, Krebs cycle and electron transport chain while in the anaerobic reaction it produces ethanol and carbon dioxide by the process of fermentation.

Each stage produces energy in the form of ATP molecules or co-enzymes NADH OR FADH₂ like glycolysis produces 2 ATP and link reaction, Krebs cycle produces NADH OR FADH₂ in addition to ATP. Each NADH produces 3 ATP while Each FADH₂ produces 2 ATP during electron transport chain.  So, ATP molecules are produced between 2 to 38 ATP molecules in each stage with large number during electron transport chain from these co-enzymes.

The waste products produced in the stages of cellular respiration are CO₂ molecules and H₂O which is also known as metabolic water.

4 0
3 years ago
A member of the health care team is researching the etiology and pathogenesis of a number of clients who are under his care in a
hram777 [196]

Answer:

The correct answer is B. A client who has increasing serum ammonia levels due to liver cirrhosis

Explanation:

Etiology is the study of origin or cause of any disease. Pathogenesis is the mechanism of causing disease by any pathogen. Pathogens use four-step to become pathogenic which are contact, colonization, invasion, and infection.  

In pathogenesis the symptoms of disease is observed not the cause so in option B increasing serum ammonia level is the symptom of liver cirrhosis which characterize pathogenesis rather than etiology and in other option, only cause of a medical condition is described so the correct answer is B.

7 0
3 years ago
A researcher claims that the Makira Island and the Santa Ana Island flycatchers are diverging into different species. Identify T
natali 33 [55]

Answer:

Prezygotic barriers:

1. Habitat isolation

2. Behavioral isolation

Explanation:

Pre-zygotic barriers are the barriers which do not allow the formation of the zygote in the organisms.

The two mechanisms of the pre-zygotic barriers are the:

1. Habitat isolation: the Flycatchers do not share the same habitat which is also mentioned in the question that they live on different islands.

2. The behavioural isolation: the Flycatchers could have evolved the different mating rituals as a result of which the could not interbreed.

Thus, Habitat isolation and Behavioral isolation are correct.

8 0
3 years ago
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