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Amiraneli [1.4K]
3 years ago
8

A researcher claims that different metabolic pathways allow bacteria to use different molecules as sources of matter and energy.

Which of the following statements best helps justify the researcher’s claim by providing a relevant example?
Biology
2 answers:
Y_Kistochka [10]3 years ago
8 0

Answer:

c

Explanation:

Whitepunk [10]3 years ago
4 0

Hello, this question is incomplete. The complete question would be:

"A researcher claims that different metabolic pathways allow bacteria to use different molecules as sources of matter and energy. Which of the following statements best helps justify the researcher’s claim by providing a relevant example? a.Rhizobia bacteria form close associations with the roots of bean plants. b. E. coli bacteria reproduce in liquid media containing either glucose or galactose. c.The antibiotic rifampicin inhibits the growth of some bacterial strains but not of others. d. Some viruses that infect bacteria reproduce by either the lysogenic cycle or the lytic cycle. "

Answer:

b. E. coli bacteria reproduce in liquid media containing either glucose or galactose.

Explanation:

Bacterial metabolism depends on carbon sources to stay nourished. Due to this characteristic, bacteria can be classified as autotrophic and heterotrophic. Among the nutrient classes, bacterial metabolism can remain active with macronutrient sources (carbon, sulfur, hydrogen, oxygen, nitrogen and phosphorus) or micronutrients (zinc, calcium, sodium, iron, manganese, potassium, cobalt, chlorine, etc).

Bacteria need a nutritious environment to survive, but their different metabolic pathways allow bacteria to use different molecules as sources of matter and energy.

Understanding this is facilitated by the analysis of the metabolism of bacteria that, like Escherichia coli, are able to synthesize all the components required for their replication from glucose or galactose and minerals alone.

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An examination of a marine sea star that had died after it was mistakenly placed in fresh water would likely show that it died b
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7 0
2 years ago
“blank” investigations are best for demonstrating cause-and-effect relationships. a. descriptive b.comparative c. experimental
FromTheMoon [43]

C. Experimental

Explanation - The cause and effect of a process would be studied in experimental investigations. However, in descriptive studies, relationship between the factors are not studies rather the detail of the process is studied. In comparative investigation, several factors are compared and its effects are analyzed.

In experimental investigations, experiments are carried out based on the hypothesis and then it is validated accordingly. Validation is a must to prove and disprove the hypothesis. Therefore, experimental data and hypothesis are related.

8 0
3 years ago
An object's______ will remain constant throughout the universe, but it's_____ can change from planet to planet. If you increase
trasher [3.6K]

Answer:

An object's <u>mass</u> will remain constant throughout the universe, but it's <u>weight </u>can change from planet to planet. If you increase the mass of a planet, what happens to its gravity? <u>Strength of Gravity increases.</u> If the gravity on a planet decreases, what happens to the weight of an object on that planet? <u>Weight Decreases</u>

Explanation:

3 0
3 years ago
Describe the career of an agricultural extension agent, with a brief summary of the responsibilities, education/training, and be
Vilka [71]

Answer:

agricultural extension agent are train expert that acts as a middle man between the farmers and research institute or organisation. they are saddled with the responsibilities of bringing new innovations, technologies, knowledge e.t.c concerning agriculture to farmers and they in turn takes farmers concerns, complains and outcry to research institute.

they help to teach farmers on how too use modern farm tools and technologies. the extension agent use  different methods to arouse or captivate the farmers and they are agent of change in that they help people form their own organizations in order to be able to tackle their problems.

they pass through different training and workshops and belong to a professional body before they can be certified an agricultural extension agent.Agricultural extension trainning/programmes cover a broad area  including improved crop varieties, better livestock control, improved water management, and the control of weeds, pests or plant diseases. they are well paid and derive maximum satisfaction when helping farmers  and proffering solutions to their problems.

Explanation:

6 0
3 years ago
¿Qué características crees que deben tener los métodos anticonceptivos para ser eficaces en el control de la natalidad?
Tanzania [10]

Answer:

Los métodos anticonceptivos para ser eficaces en el control de la natalidad deben ser seguros para las personas que los utilizan, es decir, no tener efectos adversos, o al menos, la menor cantidad posible. Ser reversibles, es decir, que no generen infertilidad de por vida. Deben ser además fáciles de usar, cómodos y fáciles de conseguir, esto es, económicos. Además deben ser eficientes en su objetivo de evitar la concepción, que es para lo que fueron creados.

Explanation:

La tasa de eficacia de un método anticonceptivo se mide por la cantidad de embarazos que se producen cada 100. Esta parece ser la característica más importante, y si bien es una de las más importantes, hay que tener en cuenta todos los otros factores mencionados, es decir que la gente pueda acceder a ellos, sean cómodos, seguros y a un precio coherente.

5 0
3 years ago
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