How many bacteria are present in the population after 4 hours?

Answers

Answer 1

According to the law of exponential growth, bacteria expand in number within a culture. After two hours, there are 125 germs in the culture, and four hours later, there are 350.

How many bacteria are still in the community five hours later?

78,686 bacteria After 5 hours, there are 80,686 microorganisms present. 100,000=200e0.02t500=e0.02tln500=0.02tt=ln5000.02≈310.73.

How many bacteria are still present 24 hours later?

Every thirty minutes, the bacterium doubles. Two halves of an hour make up one. Thus, a 24-hour period has 48 half-hours. Thus, 248 microorganisms remain in the community after 24 hours. Thus, in 20 minutes, a single bacterium can grow to two. 4 minutes later, and so forth.

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Related Questions

The diversity of dogs today can be attributed to selective breeding,
O True
O False

Answers

The answer would be true

If you draw a card out of a deck of cards at random,
what is the probability that you will draw a 6 of
hearts?
A. 4:52
B. 1:1
O C. 1:52
O D. 6:52
SUBMIT

Answers

Answer: C. 1:52

Explanation:

Which of the following statements is correct?
A. Landfills solved pollution problems caused by waste disposal.
B. Wastewater from cities no longer carries toxic chemicals into waterways.
C. Laws regulating waste disposal have put an end to pollution problems caused by waste.
D. Much of the pollution in our environment is a byproduct of inadequate waste disposal.

Answers

Answer:

D

Explanation:

all the others are false

Much of the pollution in our environment is a byproduct of inadequate waste disposal, hence option D is correct.  

What are the problems of waste disposal?

There are some problems caused by solid waste disposal include: finding suitable landfill locations, groundwater pollution, and soil pollution.

Landfills have not solved pollution problems caused by waste disposal, because it creates soil pollution in the area where waste is disposed of, which decreases the fertility of the soil.

Wastewater from cities carries toxic chemicals into waterways, which is the major cause of water pollution in that area. There are some laws that regulate pollution, but not all the person follows them.

Therefore, waste disposal is the major factor of pollution.

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some consumers such as many flying insects need large amounts of energy to grow and move from one place to another. how do consumers get energy to function?​

Answers

consumers get energy to function by consuming food from other organisms (animals), while producers get their own energy from themselves (plants)

What is the main body system affected from sickle cell anemia?

Answer choices:

Digestive System

Nervous system

Circulatory System

Respiratory system

Muscular System

Skeletal System

Answers

Answer:

Circulatory system

Explanation:

It flows through your blood and it can affect your veins,arteries,heart,ect

What is the water table?

Answers

Answer:

C: The top of a saturated aquifer

Explanation:

The water table is the upper surface of the zone of saturation. This zone of saturation is where pores and fractures of the ground get saturated with water. It can also be simply explained as, the upper level, below which the ground is saturated.

Due to sun damage, a skin cell acquired a mutation in DNA sequence in a gene essential for cell survival. This mutation, however, was not passed on to the offspring of the organism. Which explanation best accounts for this observation?

Answers

Answer:

Only mutations in reproductive cells can be passed from parents to offspring.

Explanation:

Explain how colonial organisms may have evolved into eukaryotic cells.

Answers

Answer:

The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.

My bird recently flew into a window and in bleeding between his nostrils. The wound keeps bleeding, and we can't afford a Vet visit right now, what should I do?

Answers

Answer:

he finna die

Explanation:

Answer:

OMG are the wings okay

wrap the bird up in an bandage cloth if you have any!

Explanation:

Some animals hunt by _________, or sneaking up on, their prey. M is the second letter.

Answers

Answer:

Ambush

Explanation:

Ambush is a sneaky attack/Surprise attack

Ambush most likelyyy

Which organelle converts energy from nutrients?
A. Ribosome
B. Vacuole
C. Nuclues
D. Mitochondria


HELP ME PLEASE

Answers

Answer:

ç.

Explanation:

please click the heart and rate excellent and brainleist to

Please help ASAP EXTRA POINTS AND WILL-MARK BRAINLIEST!!!

How could the Galapagos finches have evolved into 13 different species ? (2-3 sentences)

Please help thanks

Answers

Answer:

they adapted to their environment, some have sharper beaks which are used to crack nuts, when they were introduced to the new environment they evolve to the new surroundings in order to survive. therefore, seeing as though there is 13 different species, the Galapagos islands have many different food sources, and ecosystems.  

Explanation:

The term that describes the allele that determines the phenotype of an individual organism when two different copies are present in the genotype is?
A. Recessive
B. Nucleus
C. Dominant
D. Eukaryotic

Answers

Answer:

A. Recessive

Explanation:

Only answers A and C can be used to describe an allele, so B and D can't be it. If the allele was dominant, only one copy would be necessary for the phenotype to be expressed (ex. heterzygous green peas are still green, even though they carry a yellow allele). Therefore, since 2 copies are present for this phenotype, it must be recessive.

2. People with diabetes must give themselves insulin injections after they eat - how does
this help them?

Answers

Explanation:

for the insulin to be able to act on the food particles. Providing the body with the correct proportion of energy so that the remainder could be strored for a later use

What do you think accounts for the higher risk of earthquakes in Los Angeles than in Chicago?

Answers

Los Angeles has the higher risk of earthquakes
Los angles is closer to the San Andreas fault. The San Andreas fault is a tectonic boundary between the Pacific plate in the North American plate.

What would happen within a few months if all de composers on earth disappeared overnight I’ll leave a picture here

Answers

there would be an over abundance of organic waste.

Apply Concepts Eventually, most people with Alzheimer's disease lose the ability to recognize common objects. Explain which lobe is affected at this point in the disease

Answers

Answer:

The right temporal lobe

Explanation:

The cerebral cortex of the brain has two sections known as hemispheres, and each hemisphere can be divided into four lobes: frontal, parietal, temporal and occipital. Alzheimer's disease is the most common cause of dementia, which is characterized by the damage of the temporal lobe. Alzheimer’s disease usually initiates in the hippocampus, which is a structure inside each temporal lobe. The temporal lobes are involved in different neuronal functions: object recognition, face recognition, perception, memory, language, emotions, etc. The right temporal lobe is mainly involved in processing visual information (i.e., face recognition, object recognition, familiar recognition).

A cell is placed into a solution and is left sitting for 24 hours. When you come back you notice the cell is exactly the same size it was beforehand. Which type of solution was the cell sitting in? Explain

Answers

Answer:

Isotonic Solution

Explanation:

There are commonly three types of solutions:

Hypertonic solution = the concentration of solute is greater than in the cellHypotonic solution = the concentration of solute is less than in the cellIsotonic solution= the concentration of solution and cell is same.

So, if the cell was in any other solution, it would have been burst or it would shrink. but nothing changed because it was in a solution where outside environment is similar to the internal environment

Why are silent mutations possible for some of the amino acids?

Answers

Answer:

That's possible because proteins are encoded by "triplets" of nucleotides, each responsible for adding a particular amino acid to the protein chain. A change in one nucleotide, however, doesn't always change the triplet's meaning; the mutated triplet may still add the same amino acid.

Explanation:

- Eijiro <3

4 1 Your friend, Luis, recently told you that bacteria started MAGICALLY growing on the inside of his shoes causing his feet to smell. You know this is not true based on which part of the cell theory? O cells are the basic units of life all living things are made of cells very few cells reproduce all cells come from pre-existing cells 5 To enter or leave a cell, molecules, like water, must pass through the​

Answers

Answer:

You have to finish putting the question

Explanation:

names for mutant animals (like fantasy help pls)

Answers

Answer:

‘Henry,’ The Hexapus

‘Octogoat,’ The Eight-Legged Goat

Faith,’ The Two-Legged Dog

We,’ The Two-Headed Albino Rat Snake

Hope this helps!!

Please mark as brainiest!!

Mendel found out everything about genetics and we have not learned anything new about genetics in the last 160+ years. true or false?

Answers

Answer:

false

Explanation:

there has been many advancements in genetics ever since Mendel's discoveries

What are some potential
drawbacks of genetically-
modifying organisms?

Answers

Answer:

1. Allergic reactions. Some people believe that GMO foods have more potential to trigger allergic reactions.  

2. Cancer.  

3. Antibacterial resistance.  

4. Outcrossing.

Explanation:

What did you include in your response? Check all that apply Longitudinal and transverse waves are mechanical waves, so they both carry energy through particles of matter. Longitudinal waves are waves that transfer energy parallel to the direction of wave motion. Transverse waves are waves that transfer energy perpendicular to the direction of wave motion.

Answers

Answer:

Longitudinal waves are waves that transfer energy parallel to the direction of wave motion.

Transverse waves are waves that transfer energy perpendicular to the direction of wave motion.

Explanation:

First of all, transverse waves are not mechanical waves at all. Longitudinal waves are mechanical waves.

Longitudinal waves are waves that transfer energy parallel to the direction of wave motion. A typical example of longitudinal waves is wave on a spiral spring.

Transverse waves are waves that transfer energy perpendicular to the direction of wave motion. A typical example of a transverse wave is light wave and other electromagnetic waves.

what are the energy-storing compounds in photosynthesis?

Answers

Answer:

Hi, Plants store their energy in the form of starch, which is a complex carbohydrate that can be broken down into a simple carbohydrate (glucose) for the plant to use for energy. Plant cells store starch in storage organelles as all cells do. (vacuoles).

Answer:

Photosynthesis is the process by which organisms that contain the pigment chlorophyll convert light energy into chemical energy which can be stored in the molecular bonds of organic molecules (e.g., sugars). Photosynthesis powers almost all trophic chains and food webs on the Earth.

When yellow guinea pigs (Y) are crossed with white guinea pigs (W), cream-colored offspring (YW) are produced. Can a pet-store owner mate two cream-colored guinea pigs and get a white guinea pig?

Answers

Answer:

It is possible.

For this structural characteristic, decide if it is a characteristic of DNA, a characteristic of RNA, a characteristic of both or a characteristic of neither? It contains thymine as a base

Answers

Answer:it is a characteristic of DNA

Explanation:

Deoxyribonucleic acid(DNA) is made 5 carbon deoxyribose sugar, phosphate group,Nitrogenous base which include purine and pyrimidine. Purine base compose of Adenine and guanine while pyrimidine base compose of Cytosine and thymine.

In Ribonucleic acid (RNA) we have 5 carbon ribose sugar, phosphate group and nitrogenous bases which are purine and pyrimidine. Purine consist of Adenine and guanine while pyrimidine compose of Cytosine and Uracil where thymine in DNA is replaced by Uracil in RNA. This makes Thymine a components of DNA not RNA.

Where does fertilization take place?
A. ovary

B. style

Answers

Answer:

A. ovary

Explanation:

It takes place in a fallopian tube that links an ovary to the uterus.

Hope this Helps!

PLEASE HELP
Which of the following increases genetic variation by forming entirely new alleles?

Natural selection
Genetic drift
Mutation
Gene flow

Answers

Answer:

Mutation, forms entirely new alleles, the other answer choices change preexisting allele distribution within the population.

Answer:

mutation should be the answer

Scott was looking at the results of a cross between red and white flowers. Which is the most likely result of a cross that demonstrates incomplete dominance?

Answers

Answer:50 red flowers

Explanation:

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