1. Suppose that a sample of beef broth initially contains
16 bacterial cells. After 4.0 h, there are 1.6 × 106
bacterial cells in the sample. Assuming that the
bacteria reproduce at a constant rate, calculate the
growth rate of the bacterial population for the given
time interval.

Answers

Answer 1

From the calculations, the rate of growth of the culture is 2.88.

What is exponential growth problem?

We apply the exponential growth problem when there is an exponential increase.

Thus, we have; P =Poe^rt

P = amount at time t

Po = amount originally present

t = time taken

r = rate of growth

1.6 × 10^6 = 16e^4r

1.6 × 10^6/16 = e^4r

1.0 * 10^5 =  e^4r

ln 1.0 * 10^5 = ln e^4r

11.5 = 4r

r = 11.5/4

r = 2.88

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Related Questions

A car travels 1300 km in 12 hours. What is its average speed?

Answers

The average speed by which the car travels according to the given scenario is 108.3 km/hr.

What is speed?

The actual Speed is the calculated speed of the axis as determined by the change in the Transducer Counts status register. Actual Speed is measured in position units per second.

It can be calculated as total distance divided by the total time taken.

According to the given data:

The distance is 1300 km.

Time taken is 12 hrs.

[tex]Average speed = \frac{1300}{12} km/hrs[/tex]

Average speed = 108.33 km/hrs.

Thus, the average speed by which the car travels according to the given scenario is 108.3 km/hr.

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During respiration, what do consumers such as animals release?.

Answers

Answer:

carbondioxide

Explanation:

during respiration consumers release carbondioxide an inhale oxygen

Which describes how mRNA is used by a cell? OA. It is used to check DNA for mutations. OB. It is used to move information to other cells. OC. It is used to replicate DNA for mitosis. OD. It is used to transfer genetic information.​

Answers

Answer: D) it is used to transfer genetic info

Explanation: :)

The right response is OD. Genetic data is transferred through it. A specific kind of RNA molecule known as messenger RNA (mRNA) is in charge of transmitting genetic data from DNA to the ribosome, a cellular component in charge of creating proteins.

What is mRNA ?

The single-stranded nucleotide molecule known as messenger RNA (mRNA) is translated from DNA. The ribosome then converts the sequence of amino acids, which serve as the building blocks for proteins, from the mRNA. When genes are expressed, which is the process of turning DNA-stored information into proteins, mRNA plays a crucial role.

The genetic information contained in DNA and the cell's machinery for protein synthesis are connected through mRNA. Involvement of mRNA in transcription mRNA plays a role in both the transcription of DNA into a series of nucleotides and the translation of that series of nucleotides into a series of amino acids.

The control of gene expression also involves mRNA. It may be applied to control both the time and volume of protein synthesis within a cell. By regulating the quantity of mRNA a gene produces, it may also be used to alter how active a gene is. This may be used to regulate the expression of particular proteins in a cell, which can have a significant impact on the cell's functionality.  

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Why are fats a better source of energy than carbohydrates on a per carbon basis?.

Answers

Fats are a better source of energy than carbohydrates on a per carbon basis because one triglyceride molecule yields three fatty acid molecules.

What is Fat?

This is an important energy source in the body and is usually stored in the body under adipose tissues.

They contain triglyceride with as much as 16 or more carbons in each one which helps to generate energy in a slow and efficient manner.

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why is mushroom known as a type of fungi​

Answers

 They belong in a kingdom of their own, separate from plants and animals

Explanation:

Mushrooms are fungi. They belong in a kingdom of their own, separate from plants and animals. Fungi differ from plants and animals in the way they obtain their nutrients.

Which tissue type
contain neurons
and glial cells and
transports nerve
impulses across
the body?
A. Epithelial tissue
B. Nervous tissue
C. Connective tissue
D. Muscular tissue

Answers

Answer:

(B) Nervous tissue

Explanation:

Nervous tissue consists of two cells: nerve cells or neurons and glial cells, which helps transmit nerve impulses and also provides nutrients to neurons.

Answer:B

Explanation:Nervous tissue is found in the brain, spinal cord, and nerves.

Nervous tissue contains two major cell types, neurons and glial. Neurons are the cells responsible for communication through electrical signals. Glial cells are supporting cells, maintaining the environment around the neurons.

identify structure 1 and describe its main function.

identify structure 3 and describe its main function.

Answers

Structure 1 is the "cell wall"

Cell wall functions are:-

1. Provide support and limited plasticity.

2. Prevent loss of water

3. Protects from insects and pathogens

4. Prevent over expansion caused by too much water

5.Keep the shape of the plant

6. Allow plants to grow to great heights.

Structure 2 is the "vacuole"

vacuole functions are as follows:-

1.The main function of vacuoles is the storage of many important molecules like amino acids, sugars, various organic acids, and some proteins.

2. In plants, the vacuoles are very large in size and filled with cell sap that helps to maintain the trugidity and rigidity of the cell.

Hundreds of years ago, which of the following did doctors believe was a major cause of disease?

Answers

Answer: Bacteria.

Explanation: That was why penicillin was manufactured, because doctors believed bacteria was a major cause of diseases.

                            Hope this helps

Which of the following processes are involved in the loss of water from the leaves of plants?
1 diffusion
2 osmosis
3 condensation
4 evaporation
A 1 and 3
B
1 only
C 4 only
D 1 and 4

Answers

Answer:

D

Explanation:

A plant is growing near edge of a forest grows best when it gets a large amount of sunlight. If a forest fire occurs and burns down many trees in a forest, how will this affect the plant’s population?

Answers

Answer:

the plant's population will increase as now it has an abundance of sunlight because all the trees blocking it got cut down.

Explanation:

What is coral bleaching? Do you think
coral bleaching will continue to occur? Explain

Answers

Coral bleaching is essentially when a coral turns white because the temperature is too hot for it to survive. It will continue to occur as the temperature keeps getting higher because of global warming. All corals might die

Why do you think China’s One Child Policy or other similar policies like India’s two child policy have caused a lot of controversy?

Answers

Answer:

The one-child policy was a program in China that limited most Chinese families to one child each. It was implemented nationwide by the Chinese government in 1980, and it ended in 2016. The policy was enacted to address the growth rate of the country's population, which the government viewed as being too rapid.

Explanation:

It’s has caused a lot of controversy because not all countries agree with it such as the United States

Which of the following is an example of a response to a stimulus?
The pupil of one eye decreases in size when it is shined with a bright light.
A leaf absorbs sunlight in the morning.
the water level of a pond rises on a rainy day
A dead tree rots after many years.

Answers

Answer:

A

Explanation:

I think it is A, I'm not very sure

Name the type of connective tissue that anchors the ribs onto the sternum.

Answers

Hyaline cartilage makes up the costal cartilage that holds the ribs to the sternum. The most prevalent form of cartilage in the body is hyaline cartilage.

What is hyaline cartilage?

On the articulating surfaces of bones, in the larynx, trachea, and bronchi, as well as on the sternal ends of the ribs, hyaline cartilage is present. It imparts a rigid yet malleable form to the constructions.

Hyaline structures are connective tissues that anchor the ribs onto the sternum. Such structures and joints are robust because collagen fibers are present, but their mobility and flexibility are constrained. To reduce friction and provide cushioning at the joint surface, articular cartilage, also known as hyaline cartilage, covers the ends of bones.

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This space station has plants growing inside it, and astronauts who eat the fruits and vegetables from those plants. Because it is in space, the station is sealed so no material can get in or out.

The space station is in Earth’s shadow, so no light is getting into it. The sensors in the space station show that carbon dioxide in the air is increasing.

What is happening to the energy storage molecules in the plants and humans in the space station? Explain your answer as completely as possible.

SOMEONE PLEASE HELP ME WITH THIS QUESTION!!!
IT'S DUE IN 15 MINUTES

Answers

photosynthesis uses sunlight energy to make glucose (energy stores). A by-product of photosynthesis is oxygen. plants use water and sunlight to grow and they produce oxygen. Animals eat plants, use oxygen and breathe out carbon dioxide. Since the space station is in the shadow of the earth, the plants are unable to complete the process of photosynthesis and the carbon dioxide that is being produced by the humans cannot be utilized by the plants due to no sunlight. Therefore the carbon dioxide is going to continue to build up as the energy storage molecules are being depleted and not replenished.

Which is not an example of matter and energy cycling through living things?

Answers

A wind blowing would be the right solution, as it's not an example of which value and energy cycling's happening through living items. Mortal sitting vegetables involve energy transfer between diverse trophic levels.

A researcher proposes a model of an enzyme catalyzed reaction

Answers

A researcher proposes a model of an enzyme-catalyzed reaction in which a reactant is converted to a product.

What is enzyme catalysed reaction?

Enzyme catalysis is the increase in the rate of a process by a biological molecule, an "enzyme". Most enzymes are proteins, and most such processes are chemical reactions. Within the enzyme, generally catalysis occurs at a localized site, called the active site.

The model is based on the idea that the reactant passes through a transition state within the enzyme-substrate complex before the reactant is converted to the product.

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Cara set the following goal for herself:

I want to be a good softball player.

Please describe the effectiveness of Cara's goal in two to three complete sentences using the MAD goals concept.

Answers

The effectiveness of Cara's goal can be achieved using the MAD goals concept when her idea is  Measurable, Attainable, and have a Deadline.

What is the Mad goals concept?

The ​​MAD Goals are:

MeasurableAttainableDeadline.

They should be measurable so students can know if they are making progress towards their goals.  They should be attainable because there is no sense in having goals that can never be reached.  They should have a deadline so that the student will feel some urgency to reach the goal.

The effectiveness of Nolan's goal can be achieved using the MAD goals concept when her idea is  Measurable, Attainable, and have a Deadline. When the cancer donations falls within the defined steps above, she can be able to attain her goal.

Thus, this could be the answer.

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Which action has a positive effect on air resources?

using fossil fuels
building new homes
walking to work or school
removing vegetation such as trees

Answers

Answer:

Person above me or below me is correct :)

Explanation:

The answer is C !!

- Have a good summer :)

Utilising fossil fuels has a detrimental impact on air quality because they produce dangerous pollutants like carbon dioxide and nitrogen oxides when they are burned.

What are the contaminants linking to the air pollution ?

These contaminants are linked to higher air pollution levels, which can lead to a variety of health problems, such as heart disease and respiratory disorders. The effects of new house construction on air resources are complex.

On the one hand, since burning fossil fuels for energy and releasing building materials can result in the emission of hazardous chemicals, construction may increase air pollution. On the other side, if new homes are constructed in places with fewer air pollution, as in rural regions, they may result in better air quality.

A benefit of walking to work or school an advantage for air resources. Walking does not emit any pollutants into the air, making it a zero-emission mode of transportation.

Additionally, walking lessens traffic on the roadways, which can lessen vehicle-related air pollution. Air resources may suffer if trees or other vegetation are removed. By providing shade, trees not only assist to filter airborne pollutants, but they also help to chill the air. Because air pollutants are not being filtered out as well when trees are cut down, this might result in higher air pollution levels.

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Which of the following elements have the highest percentage in terms of frequency in the Earth's crust and human body, respectively? A. Nitrogen, Oxygen B. Oxygen, Silicone. C. Carbon, Oxygen. D. Oxygen, Oxygen​

Answers

Answer

The most abundant elements in the human body are oxygen, carbon and hydrogen. Oxygen makes up 65% of the body.

Answer:

Oxygen as it makes up 65% of the body

The scales shown in the introduction measure mass,or the amount of matter in a particular object.The scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. Did the simulation support this scientific law? Explain why or why not.

Answers

The simulation supports the scientific law : I.e TRUE

The scientific law of conservation of mass

The scientific law of conservation of mass states that the mass of a substance remains the same in a closed system  as the substance/matter undergoes a chemical reaction. during chemical reaction the matter changes from one form to another. Therefore measuring the mass of matter in an object before it undergoes a chemical reaction support the scientific law as the mass of reactants is equal to mass of product.

Hence we can conclude that the simulation supports the scientific law : I.e TRUE.

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anyone know good studying tips?

Answers

If your teacher gives a study sheet then study that everyday for 30min or 20min or you can go on a web called quizlet and write the study set you want and they might have it. Or if its on a person just study the person on the web. On wikipedia or other resources with good info on the person.

how do the changes in the red blood cells impact homeostasis

Answers

Answer:

Red Blood Cell Homeostasis: Mechanisms and Effects of Microvesicle Generation in Health and Disease. Red blood cells (RBCs) generate microvesicles to remove damaged cell constituents such as oxidized hemoglobin and damaged membrane constituents, and thereby prolong their lifespan.

A racoon may live longer when it only eats vegetables.
What is the student doing?
A. Forming a hypothesis
B. Collecting data
C. Drawing a conclusion
D. Making a prediction

Answers

Answer:

D making a prediction

Explanation:

The diploid number of chromosomes in humans (homo sapiens) is 46 and the diploid number of chromosomes in rice (oryza sativa) is 24. What does this indicate about diploid chromosome numbers?

Answers

For humans, the diploid chromosome number equation is 2n = 46 because humans have two sets of 23 chromosomes The diploid chromosome number varies by organism and ranges from 10 to 50 chromosomes per cell.

What is Mitosis?

Mitosis is a type of cell division that occurs in somatic or body cells. In mitosis, and a cell undergoes division to produce two daughter cells each with the same number of chromosome as the parent cells.

Mitosis produces diploid cells and diploid cells are cells that have the same number of chromosomes as the parent cell.

Thus,  The diploid chromosome number varies by organism and ranges from 10 to 50 chromosomes per cell.

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ponds were constructed for the purpose of

Answers

Answer:

Ponds are used for breeding grounds for these species but also as shelter and even drinking/feeding locations for other wildlife.

Answer:

There is some ponds are constructed for the production of HEP Hydroelectric power,or as the water catchment area in flooded areas.

List all the categories humans belong to starting with life and ending with species name.
List all the categories humans belong to starting with life and ending with species name.
1. life
2. eukarya
3. animalia
4. chordata
5. mammals
6. primates
7. hominid
8. homo
9. sapiens
Just in case anyone needed it!!

Answers

The categories can be ordered as life, Eukarya, Animalia, Chordata, Mammalia, Primates, Hominid, Homo, sapiens.

What is classification?

Classification is the ordering of organisms based on the similarities in their characteristics.

In case of humans the categories includes:

Kingdom – Animalia.Phylum- Chordata.Class- Mammalia.Order – Primates.Family – Hominidae.Genus – Homo.Speciessapiens

Thus, this is the categories humans belong to starting with life and ending with species name.

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Select the correct label on the image.
An ecological pyramid shows the transfer of energy. Which level will contain only 0.1% of the total energy obtained from the Sun?
5 kcal
hawk
50 kcal
snakes
500 kcal
mice (rats)
5000 kcal
plants
Biomass (energy) pyramid
Reset
Next

Answers

Tertiary consumers receive only 10% of the energy consumed by secondary consumers.

What is secondary consumer?

The secondary consumers are meat-eating organisms (carnivores) that consume the primary consumers. Secondary consumers are typically larger and more numerous. All the way to the top of the food chain, this goes on.

This is due to the fact that secondary consumers expend the majority of their energy on growing and reproducing. As a result, tertiary consumers only receive 0.1 percent of the Sun's total energy.

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Some studies have shown that peppermint odor increases people’s mental sharpness, especially when they solve math problems. Which best describes how this could be a valid scientific claim?
if it is tested in a controlled setting with repeated results
if the test is published on Wikipedia
if the scientist was previously peer reviewed
if the math problems are easy problems

Answers

The claim could become valid scientifically if it is tested in a controlled setting with repeated results. The correct option is the first option.

Scientific validity

A statement without any experimental test is considered a hypothesis in science.

In order for tentative statements to become valid scientific claims, they must be tested experimentally in a controlled setting with the resulting data supporting the claims. The data must also be reproducible by independent researchers.

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Answer: A: If it is tested in a controlled setting with repeated results

Explanation:

I just took the quiz on Edge.

Hope this helps!!!!!

A person cannot produce several types of lipases and amylases. name a problem this individual would have and explain why.

Answers

A person cannot produce lipases and amylase due to mutations in the genes that encode enzymes required to break down fats and starch.

What are lipases and amylase?

Lipases and amylase are two types of enzymes required to break down fats and starch, respectively.

Mutations in the genes that encode these enzymes may lead to the production of defective proteins.

In conclusion, a person cannot produce lipases and amylase due to mutations in the genes that encode enzymes required to break down fats and starch.

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Other Questions
Gold (Au) should have an electron notation that ends in 6s24f145d9. To become more stable, the electrons in reality rearrange themselves. How do they do it If the perimeter of this triangle is 15 centimeters, what is the value of n? Find sin A for the triangle below. Give the exact value as an expression and an approximation to the nearest ten-thousandth. Note: The triangle is not drawn to scale. how did radical islamic fundamentalism contribute to the growth of al-qaeda Evaluate the expression when x = 6.x +8x-3 Which is an adaptation plants have developed because of gravity?vines curl around treesroots grow into the groundleaves curlingplants lean please help![3 x 2 - 13 x (-2)] + 2 (-2 +3) - 3 Give your answer in simplest form. True or False: A sound wave causes particles of air to travel from the source of sound (e.g., the speaker) to the listener's ear. Explain your answer. 20 POINTS FOR THE ANSWERNow that you have had some experience brainstorming for your project, answer three of the questions listed.What are the easiest and hardest parts of brainstorming?What brainstorming techniques did you use?Where are you finding your inspiration?Are you stuck on anything or having trouble with ideas?What is your favorite idea for your project so far? What is the area, in square units, of the polygon shown here?A figure in the shape of a block letter L with a vertical height of 8 units and a length of 5 units is shown. The length of the top of the L is 2 units and the height of the right side of the L is 1 unit.14 units2 16 units2 17 units2 19 units2 Refer to image and please attach working out Read the excerpt from "Surrendering by Ocean Vuong.Between his sentences, a crowdI imagined thousandsroared and applauded. I imagined their heads shifting in an endless flow. His voice must possess the power of a moon, I thought, something beyond my grasp, my little life.What are the denotation and connotation of the word endless in the excerpt?The denotation is continuous, and the connotation is positive.The denotation is unrelenting, and the connotation is positive.The denotation is continuous, and the connotation is negative.The denotation is unrelenting, and the connotation is negative. How does the placement of the letters at the beginningof each line affect the meaning of the excerpt?O It establishes that the poem is about Alice.O It emphasizes that Alice has gone away.OIt places Alice with the group of children.O It creates a visual image of Alice. What was one strategy radical republicans used to achieve their goals for reconstruction? a. opposing any proposals to amend the u.s. constitution b. offering to let southern states easily rejoin the united states c. using the military to protect african american voting rights d. removing andrew johnson from office through impeachment submit Complete the chemical equation for the reaction of iron with chlorine Fe + . Cl2 -.FeCl3 What is the area of the following triangle in square meters? Do not round your answer.A=m2 The loudness L of sound in decibels is given by L=10log(I/I0) where I is the intensity of the sound, and I0 is the intensity of the least audible sound. If I0=10^-12 W/m^2 about how many times more intense is a 108 decibel sound than a 100 decibel sound?A. 4.56B. 6.31C. 5.64D. 7.82 What did the Munich Pact of1938 state that Hitler had to doin exchange for Germanygetting the Sudetenland, a partof Czechoslovakia?A. finish paying war debts from the first worldwarB. go no further in his conquest of EuropeancountriesC. pay for reparations from his bombingcampaign in Great BritainD. pull troops out of France and Russia Calvin deposits $400 in a savings account that accrues 5% interest compounded monthly. after c years, calvin has $658.80. makayla deposits $300 in a different savings account that accrues 6% interest compounded quarterly. after m years, makayla has $613.04. what is the approximate difference in the number of years that calvin and makayla have their money invested? During radioactive beta-decay, a neutron (1.6749x10-27 kg) at rest decays into a very slow moving proton (1.6726x10-27 kg) and a fast electron (9.109x10-31 kg). What is the speed of the electron? (Hint: find the total energy of the electron)