Answers
1 - A
2 - B
3 - A
4 - False
5 - active
Related Questions
Researchers grew populations of identical Escherichia coli (E. coli) bacteria in a growth medium that contained a low concentration of glucose and a high concentration of citrate, a substance that is not typically consumed by E. coli. For thousands of generations, the bacteria used only glucose as an energy source and grew relatively slowly and to a low density because of the low concentration of glucose. After about 30,000 generations, one population emerged that began to rapidly grow to a much higher density. The researchers hypothesized that the bacteria evolved the ability to use citrate as an energy source and referred to them as Cit . To test the hypothesis, the researchers grew separate populations of the Cit bacteria and bacteria from the original population (Cit- ) in a growth medium that contained only citrate. Describe one outcome that would demonstrate that a given population has evolved.
Answers
Answer:
The colony of bacteria is called cit positive, or cit in case these advance with colonization in media with citrate, since if they grow in number and proliferate, it means that they use citrate as a metabolite or food resource for their metabolism.
Explanation:
In case these are negative cit, the profileration would have to be null or see that the colony stagnant its growth, that is to say that they did not increase in number or even decrease their number layers and they did not replicate in media with citrate.
The colony of bacteria is named cit positive, or cit just in case these advance with colonization in media with citrate.
Since if they grow in number and proliferate, it means they use citrate as a metabolite or food resource for metabolism.
In case these are negative cit, the proliferation would have to be null or see that the colony stagnant its growth, that is to say, that they did not increase in number or maybe decrease their number layers and that they didn't replicate in media with citrate.
What about E.coli?
E. coli, a species of bacteria that lives harmlessly in every person’s gut by the billions. A typical E. coli contains about 4,000 genes (we have about 20,000). Feeding on sugar, the microbe grows till it's able to split in two.
It makes two copies of its genome, nearly always managing to supply perfect copies of the first. The single microbe splits in two, and every new E. coli receives one of the identical genomes. These two bacteria are, in other words, clones.
Therefore, E.coli grows in presence of citrate that evolved in the population of 30,000 generations.
Learn more about E.coli here:
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Which type of rock does B represent?
Group of answer choices
Answers
need help with this ??
Answers
Answer:
C all areas around the equator
Explanation:
All studys about the area of the earth have proved that area has higher heat values
A student places a healthy potted plant and a plastic straw in a closet for two weeks. After two weeks, the student observes that the plant is wilted and brown, while the plastic straw remains the same.
The student classifies the plant as living and the plastic straw as nonliving,
What criteria does the student use to classify the plant as living rather than nonliving?
The plant needs energy from sunlight to make food for survival.
The plant produces pollen for reproduction of its species.
The plant generates sugars that are consumed as food by other organisms.
The plant produces offspring with characteristics similar to the parent plant
Answers
Answer:
According to the experiment, the criteria used by the student to classify the plant as living rather than non-living is that plant needs energy from sunlight to make food for survival.
Explanation:
One of the characteristics that defines plants as living is their ability to perform functions proper to living beings, such as nutrition, growth, development and reproduction.
Plants are autotrophic organisms, capable of producing their own nutrients from sunlight, so they require this type of energy for their nutrition and survival.
The fact that the plant that remained in the closet for 2 weeks turned brown and wither demonstrates the need it has for sunlight, which is a valid criteria for considering it a living being, in comparison with the non-living object.
The other options are characteristics of plants as living beings, but they are not the criterion that demonstrates that plants are living beings, in accordance with the proposed scenario.
Pls help i dont understand :( Will give Brainliest + 25!!!
Answers
Answer:A
Explanation:
Answer:
I believe A would be the answer
You are about to be sent to a remote area by WHO where you will be working with infectious diseases caused by a variety of microorganisms. You will be using what you know about the chemistry underlying biological processes in microbes and infections to solve the case on Rabbit Island. What will you need to know
Answers
Answer:
Pathology of any infectious disease required some basic information to understand the biology and physiological process of the microbes, these information are given as follow:
Mode of pathogenesis
range of the affected organ or tissues
The incubation period, latent period and extent of infection
Physiological change in the infected organ or tissue
Doubling time of microbe in the host
The resistance and sensitivity of microbe against antibodies
Co-infection if any.
A particular triplet of bases in the coding strand of DNA is AAA. The anticodon on the tRNA that binds this mRNA codon is _____.
Answers
Answer:
UUU
Explanation:
A codon consists of three nucleotide bases that codes for a specific amino acid.
In the process of protein synthesis, information encoded in the messenger RNA is transferred from it by the tRNA to the rRNA of ribosomes for protein synthesis. Each transfer RNA (tRNA) has an anticodon which can base pair with a codon.
An anticodon consists of three nucleotide base sequence that is complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence.
Since in RNAs, uracil, U, is complementary to adenine, A, the anticodon on the tRNA that binds to the mRNA AAA codon is UUU.
Diagram the process of cellular respiration.
Answers
Answer:
Explanation:
Cellular respiration is the aerobic process by which living cells break down glucose molecules, release energy, and form molecules of ATP. Overall, this three-stage process involves glucose and oxygen reacting to form carbon dioxide and water.
Which of the following make up the structure of ATP? *
adenine base, ribose sugar, 1 phosphate
adenine base, ribose sugar, 3 phosphates
adenine base, glucose sugar, 1 phosphate
adenine base, glucose sugar, 3 phosphates
Answers
Answer:
b
Explanation:
5
What is the main idea of this text?
A
No two human microbiomes are the same.
B
The human body is a diverse ecosystem made up of microbes.
C
Some bacteria cause infections and even life-threatening diseases.
D Some scientists think that infants who lack exposure to microorganisms
develop a higher rate of allergies.
Answers
Answer:
What is the text?......
What does the Krebs cycle use to make NADH?
Answer Options are: CO2, Glucose, or Pyruvate
(Solved... the answer is Pyruvate)
Answers
Answer:
Pyruvate
Explanation:
It's a product of glycolysis the prior step.
The Krebs Cycle uses the pyruvate of Glycolysis in order to make NADH. The pyruvate from Glycolysis converts into Acetyl CoA which enters the Krebs cycle to derive NADH. Thus, the correct option for this question is C.
What is the Krebs cycle?The Krebs cycle may be defined as a type of cycle that involves a series of chemical reactions in order to liberate stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins in the form of ATP or NADH.
The process begins with the molecules of glucose which coverts into pyruvate (a molecule of three-carbon). This pyruvate is then transformed into acetyl CoA which has two carbon atoms. This acetyl CoA is then entered into the Krebs cycle in order to deliver the form of an electron which is known as NADH.
Therefore, the Krebs Cycle uses the pyruvate of Glycolysis in order to make NADH. Thus, the correct option for this question is C.
To learn more about the Krebs cycle, refer to the link:
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Hereditary information is stored inside the?
A. Nucleus,which have ribosomes that contain genes
B. Nucleus, which has DNA that contains water
C. Nucleus,which chromosomes that contain genes
D. Nucleus, which has genes that contain many chromosomes
Please help
Answers
the answer is D Nucleus, which has genes that contain many chromosomes
Hereditary information is stored inside the nucleus, which has chromosomes that contain genes.
What is hereditary?"Transmission of character or traits from parent to offspring is called hereditary." What is a nucleus?It is the center of a cell that controls and regulates all the activities in a cell.What are chromosomes?"Chromosomes are thread-like structures located inside the nucleus of animal and plant cells."It is a long DNA molecule.What are genes?"A gene is the basic physical and functional unit of heredity."It is present in chromosomes.
Hence, the correct option is C. Nucleus, which has chromosomes that contain genes.
To know more about genes here
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what are the chamber of human heart
Answers
Answer:
atrium,ventricle,lungs,pulmonary
Explanation:
Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium.
Man made sources of green House Gases
A
Factory emmissions
B
all of them
C
Chlorofloro Carbons
D
Automobile emmissions
Answers
Answer: C. Chlorofluoro Carbons.
HURRY Design a bacterium that will be genetically engineered. Describe what it will do and how it helps the environment.
Answers
Answer:
here
Explanation:
since is man made it's obviously someway going to help.the environment like for example it could help prevent sickness
Answer: Bacterial cells can be genetically modified so that they have the gene for producing human insulin. As these modified bacteria grow, they produce human insulin. This protein can be purified and supplied to diabetics.
Explanation: just had this question.
O Excretory System 4. The allows us to breathe, digest food, and react to stimuli by regulating the functions of our organs. (10 Points) 0 Immune System O Nervous System O Excretory System O Integumentary System 5. (10 Points)
Answers
Answer:
The Nervous System.
Explanation:
The nervous system's job is to help in receiving information about the environment around us and generate responses to that information (a.k.a homeostasis). The nervous system can be divided into regions that are responsible for sensation (sensory functions) and for the response (motor functions).
Hope this helps!
What's the difference between a statute and a regulation in the US?
A. Statutes are laws passed by federal agencies, while regulations are laws passed by Congress
B. They're the same thing. Laws and regulations express the same concept.
C. Statutes are laws passed by Congress, while regulations are laws passed by federal agencies
D. Citizens that break the law are subject to heavier penalties, whereas breaking regulations would only result in fines at the worst
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Answer:
A. Statues are laws passed by federal agencies, while regulations are laws passed by Congress.
Explanation:
A statute is a law, enacted by the state or federal legislature. Regulations are rules set by agencies that fill in the ambiguous areas of laws
A test under controlled conditions that is made to demonstrate a known truth
examine the validity of a hypothesis, or determine the efficacy of something
previously untried.
6
Answers
The uterus has three parts. Which one of the following is NOT one of the parts of the uterus?
Question options:
A. Corpus B.Fimbrus C.Fundus D.Cervix
Answers
Answer:
My ans is Letter B. Fimbrus
Answer: B. Fimbrus
This is not part of the uterus.
Hope this helps!
What happens during cytokinesis?
Answers
How is this circular motion archived
Answers
Answer:
c
Explanation:
Which of the following statements about mycorrhizae is false? Group of answer choices Foresters inoculate pine seedlings with them to promote growth. They colonize soils by dispersing spores that form new mycelia. They are in a parasitic relationship with plants. They are important in natural systems and agriculture.
Answers
Answer:
They are in a parasitic relationship with plants.
Explanation:
Mycorrhizae is a fungus root that has a mutually beneficial relationship with roots of the plants and not a parasitic relationship.
Mycorrhizae colonize soil and disperse its thick-walled spores produced on the extra-radicular hyphae. Mycorrhizae are important in natural systems and agriculture as it helps in the regulation of exchange of nutrients and sugar between fungus and plant.
Hence, the correct answers are "They are in a parasitic relationship with plants."
In physics, what is a black body?
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Answer:
Blackbody, in physics, a surface that absorbs all radiant energy falling on it. The term arises because incident visible light will be absorbed rather than reflected, and therefore the surface will appear black. The concept of such a perfect absorber of energy is extremely useful in the study of radiation phenomena.
How do
you think humans can impact the
biosphere by affecting the biogeochemical
cycles?
Answers
Answer:
hope this will help u
Explanation:
Biogeochemical Cycles
Human activities have greatly increased carbon dioxide levels in the atmosphere and nitrogen levels in the biosphere. Altered biogeochemical cycles combined with climate change increase the vulnerability of biodiversity, food security, human health, and water quality to a changing climate.
Explore interactions between climate change and biogeochemical cycles.
Answer:
Human activities
moreover, biogeochemical cycles combined with climate change increase the vulnerability of biodiversity, food security, human health, and water quality to a changing climate.
Concept map using these words
Answers
Answer:
ummm cant see
Explanation:
Can't see the picture
does a dicot have vascular bundles in a circle
Answers
Answer:
Dicot stems have their vascular bundles in a ring arrangement.
Explanation:
that might answer ur question.... forgive me if im wrong <3
What is one way the nitrogen and carbon get into the soil?
Answers
Answer: Humans changed a lot of things during time and one of those things ended up being the Carbon cycle .. They changed it by burning fossil fuels , which releases Carbon Dioxide into the atmosphere ..The nitrogen cycle however starts with nitrogen gas in the atmosphere then goes through the nitrogen cycle fixing Microorganisims to plants , then animals , decomposers then finally into the soil .
Explanation: Everything goes through a certain process to end up in the soil.
Did this yesterday )
Hope I helped -
Sleepy~
T or F? The mantle surrounds the iron core
Answers
Answer:
T :)
Explanation:
15 points and brainliest for right answer!!!!!
Which action causes breakers
1 waves hit the shore at an angle and transport sand
2 water flows away from the shore and moves sand with it
3 underwater earthquakes cause motion throughout ocean
4 water waves meet the shore and cause the crest to spill over the trough
Answers
Answer:
When a wave becomes too high relative to the depth of the water, it can no longer support its own weight and topples to the shore, resulting in a breaker. Waves Even though it looks as though waves are moving forward, in reality only a relatively small amount of water is displaced, and what you actually see is a transfer of energy..
Answer:
4. Water waves meet the shore and cause the crest to spill over the trough.
Explanation:
A breaker is a wave that has the crest spill over toward the trough as it approaches shore.
How is the investigation of the Hudson River ecosystem an example of scientific inquiry?
Scientists study the natural world through scientific inquiry. This involves:
• Asking questions
• Developing and using models
• Planning and carrying out investigations
• Analyzing and interpreting data
• Using mathematics and computer technology
• Constructing explanations
• Engaging in argument from evidence
• Obtaining, evaluating, and communicating information
Answers
Answer:
The investigation of the Hudson River is an example of scientific inquiry because it develops testable questions such as this; How might a zebra mussel invasion affect the Hudson River ecosystem?
All the other elements of scientific inquiry were applied.
Explanation:
Developing and using models: Scientists developed ways to check for changes in the river using the data available to them.
• Planning and carrying out investigations: Several scientific institutes have planned and carried out investigations to determine reasons for the return of the Zebra mussels.
• Analyzing and interpreting data: Graphs are plotted to evaluate to draw a relationship between the zooplankton and the Zebra mussels.
• Using mathematics and computer technology : Mathematical measurements were done to analyze the sizes of the Zebra mussels.
• Constructing explanations : Explanations were proposed as to why the Zebra mussels were not eating up them. It made sense to them that more Zebra mussels would result in more Zooplanktons
• Engaging in argument from evidence : They could argue from the evidence that blue cobras were eating up the Zebra mussels
• Obtaining, evaluating, and communicating information: After scientists have obtained their information, they endeavor to communicate them by publishing them in scientific papers and journals.
