Why do bacteria numbers start to decline when treated with antibiotic C but then begin to increase as time goes on?
Question 18 options:

A) Some bacteria with resistance to antibiotic C were selected for over time.

B) Additional bacteria were added to the experimental group.

C) Antibiotic C degraded and thus was no longer effective.

D) This is the normal course of bacterial growth no matter which antibiotic is applied.

Answers

Answer 1

Answer:

A.

Explanation:  :)


Related Questions

Kill most of the hawks using the button and then click play observe the graph for about 12 months and then click phase what happen

Answers

Nxxnnsnsdnndndndxbxnxndndndndn

true or false

ATP is the primary source for energy for cells.

Answers

Answer:True

Explanation:The mitochondria is the powerhouse of the cell and it converts chemicals that you get from food into ATP.  ATP is then shipped out and used for energy.  Hope this helps:D

Which of the followWhich of the following correctly match a convection current in an Earth system to the primary source of energy for that convection current?

A
the atmosphere: global wind patterns -> source: solar radiation

B
the hydrosphere: global ocean currents -> source: solar radiation

C
all of the above

D
the geosphere: plate tectonics -> source: radioactive decay of elements in Earth’s coreing is a beneficial effect of volcanic eruption?

is for enviromental systems

Answers

Explanation:

Looking at the Ecological concept of Modern Ecology

we have

Atmosphere, Lithosphere, Biosphere, Niche, Environment, Habitat, Population, Ecosystem and Biotic community

Hydrosphere and Geosphere are not part

so Atmosphere is the correct answer

Giving brainliest!!!!!!!!! This is the last question on the test so i bumped up the points ;)

Answers

Answer:

D

Explanation:

All living organisms have to have cells

The principle that energy cannot be created or destroyed is known as what

Answers

Answer:

Conservation of energy

Explanation:

If we flipped a coin 100 times. How many times would we have to get heads to be significantly
different? Make a guess. But it should be close to 63 I

Answers

Answer:

24

Explanation:

thats my guess

Q5.
can be called as a keystone species because its important food-web connections
(a) Seagull
(b) Chiton
(c) Plankton
(d) Crab

Answers

Answer:

a

Explanation:

A pyramid of biomass shows the mass of all the organisms in each trophic level of an ecosystem. Look at the biomass pyramid to the right. Based on the data shown, how many kilograms of plant matter would be needed to support the other trophic levels in this ecosystem?

Answers

Answer:

90,000

Explanation:

It would be 90,000 because it is a pattern, 90, 900, 9,000, and 90,000.

what type of materials are expelled from cells during exocytosis

Answers

Answer:

During exocytosis cells expel a variety of materials including waste products, toxins and large molecules such as hormones, proteins and neurotransmitters into the extracellular environment.

Explanation:

Waste Products, Toxins, and large molecules like hormones, proteins and neurotransmitters

identify the parts of the heart in the corresponding spaces. once you have identified the parts of the heart, label the image provided

Answers

Answer:

no image provided to answer

Explanation:

PLSSSSS ANSWER LOTS OF POINTS AND BRAINLYEST

What statement is true of a prokaryotic cell?

It is unicellular, HAS a nucleus, and has most organelles.


It is multicellular, does NOT have nucleus, and has most organelles.


It is multicellular, HAS a nucleus, and is missing most organelles.


It is unicellular, does NOT have a nucleus, and is missing most organelles.

Answers

Answer:

the first answer I believe but I could be wrong

Answer: It is unicellular, does not have a nucleus, and is missing most organelles.

Explanation:

What is stalagmite and how is it formed?

Answers

Answer:

Explanation:

stalagmite, elongated forms of various minerals deposited from solution by slowly dripping water. A stalactite hangs like an icicle from the ceiling or sides of a cavern. A stalagmite appears like an inverted stalactite, rising from the floor of a cavern.

Please help dont put down some answer please i will give you good review and lots of points.

Answers

Answer:

Planet Y

Explanation:

Planet Y has the smaller period because it takes less time to orbit the star. This is because it has less distance to travel compared to X.

The Earth is primarily composed of:


water


rock


gas

Answers

Resposta:  resposta é a

water

Explanation:

The earth is primarily composed of rock. Therefore, option B is correct.

What is the structure of the earth?

The crust, mantle, outer core, and inner core are the four principal parts that make up the earth's structure. Each layer has a distinct chemical makeup, physical state, and potential to affect life on the surface of the Earth.

the outermost layer crust is composed primarily of granite and basalt rock. Oceanic and continental crusts are two different types. The majority of the oceanic crust is made of basalt and is denser and thinner. Granite makes up the majority of the less dense, thicker continental crust. The mantle is made of solid rock that is hot, thick, and rich in iron and magnesium. The liquid and solid portions of the core make up the earth's center.

The earth is primarily composed of rock. Therefore, option B is correct.

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Help me plz. I need help with this. I don't get it. plz help me,

Answers

Answer:

hydrogen=white sphere

nitrogen= striped sphere

carbon= gray sphere

oxygen= dotted sphere

Drag the appropriate labels to their respective targets. Label processes on the right in PURPLE, and all other components on the left.

Answers

Starting from the top downward:

Group 1:

TranscriptionRNA processingTranslation

Group 2;

DNAPre-mRNAmRNARibosomePolypeptide

The entire setup represents what happens during gene expression. The process starts in the nucleus with genetic information in DNA being transcribed into mRNA.

The pre-mRNA undergoes some processing before being transported to the cytoplasm where it gets attached to the ribosome and utilized in the synthesis of polypeptides (also known as proteins) in a process known as translation.

More on gene expression can be found here: https://brainly.com/question/10706638

What are
some reasons amphibian populations may be
decreasing? Suggest ways to reverse the
decline to your class.

Answers

Answer:

These causes include habitat modification and fragmentation, introduced predators or competitors, introduced species, pollution, pesticide use, or over-harvesting. However, many amphibian declines or extinctions have occurred in pristine habitats where the above effects are not likely to occur.

Explanation:

match each muscle of the arm with the correct label

Answers

Answer: 1 - Brachialis 2 - Brachioradialis 3- Pronator teres 4 - Palmaris Longus 5 - Extensor carpi radialis 6 - Extensor digitorum

Explanation:

The correct match of the muscles has been stated below and these are as follows:

1 - Brachialis, 2 - Brachioradialis, 3- Pronator teres, 4 - Palmaris Longus, 5 - Extensor carpi radialis, 6 - Extensor digitorum.

What is muscle?

Muscle is defined as the group of the tissue and contraction has been defined as an action potential travels along the nerves to the muscle. The beginning of the muscle contraction which has been occurs with the signal generated from the nervous system.There are generally two types of the muscle contraction and the situation occur when the muscle contracts and the change in the size takes place.

Isotonic concentric contraction h been known as the type of muscle contraction in which muscle has been shortening takes place. Isotonic eccentric contraction has been the type of the muscle contraction in which the muscle lengthening whilst it is under tension.

Therefore, 1 - Brachialis, 2 - Brachioradialis, 3- Pronator teres, 4 - Palmaris Longus, 5 - Extensor carpi radialis, 6 - Extensor digitorum.

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Explain the importance of gene regulation in prokaryotic cells.

-Explain the importance of gene regulation in eukaryotic cells.

Answers

Answer:

Prokaryotic cells can only regulate gene expression by controlling the amount of transcription. As eukaryotic cells evolved, the complexity of the control of gene expression increased. For example, with the evolution of eukaryotic cells came compartmentalization of important cellular components and cellular processes.

Explanation:

Hope this helps.

What’s everyone’s favorite tv show or movie?

Answers

I dont watch tv shows or movies

lol

A block of aluminum occupies a volume of 20.0 mL and weighs 30.5 g. What is its density?

Answers

Answer:

1.525 g/mL

Explanation:

Density is calculated by dividing mass and volume

30.5 g / 20.0 mL= 1.525 g/mL

A de-shelled egg is placed in tap water. The egg grows in size.

What is the best explanation for this change in size?


Ions in the water moved into the cell through diffusion because there were more ions outside the cell than inside the cell.

Water moved into the cell by osmosis because the solute concentration was higher inside the cell than outside the cell.

Water moved out of the cell by osmosis because the solute concentration was higher outside the cell than inside the cell.

Water moved into the cell by diffusion because there is more water inside the cell than outside the cell.

Answers

C I did your test and got 100% I’m a g at this I promise you

The best explanation for the change in the egg's size is that Water moved into the cell by osmosis because the solute concentration was higher inside the cell than outside the cell. Option B.

--------------------------------------------

When talking about solutions, we can classify them as follows,

Hypertonic ⇒ A hypertonic solution has a higher concentration of solute than the cell. This means that in the cell interior, the solute concentration is lower than in the solution itself.  

Isotonic ⇒ The solute concentration is the same inside the cell and outside.  

Hypotonic ⇒ A hypotonic solution has a lower concentration of solute than the cell. This means that in the cell interior, the solute concentration is higher than in the solution itself.  

Water is considered to be a hypotonic solution.

When a cell is in a hypotonic solution, through osmosis, water moves toward the cell.  

Note: In this example, the egg is the cell.

Osmosis is the phenomenon that occurs when two dilutions of different concentrations -in this example, the interior of the cell and the solution- are separated by a semipermeable membrane.

The membrane allows the pass of water but not solute. Hence, water can move from the most diluted side to the less diluted one.  

Water tends to go from the hypotonic solution to the cell interior and keeps doing so until concentrations are equal in the cell interior and exterior.

As water enters the cell, the cell begins to enlarge and becomes bigger-sized. And because cells can not limit the amount of water moving in, it keeps swelling until the membrane can not stretch anymore, and lysis occurs. It bursts.  

What we need to consider is

When a cell with a semipermeable membrane is placed in a hypotonic solution, water enters the cell.

When a cell with a semipermeable membrane is placed in an isotonic solution, there is no water movement.  

When a cell with a semipermeable membrane is placed in a hypertonic solution, water gets out of the cell.

So, the best explanation for the change in the egg's size is Water moved into the cell by osmosis because the solute concentration was higher inside the cell than outside the cell. Option B.

------------------------

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In the picture down below is my question

Answers

Answer:

The answer is Telophase

The answer is telophase

Fill the container to the top with the particles. Place your hand tightly over the top of the container and shake it. What state of matter does this represent? Explain.

Answers

Answer:

It should be solid.

Explanation:

Solids have little to no movement in their particles. If you were to fill it to the top and shake, not much would move, therefore representing solids.

Particles are the unit that makes the matter. The states of matter based on particles can be solid, gas, or liquid. The matter in the experiment represents solid matter.

What are phases of matter?

The phases or states of matter are based on the composition and the distribution of the particles of the object. There are four known and observable states of matter namely solid, gas, plasma, and liquid.

The gas is the freest and most spaced particle with no fixed volume and shape. On the other hand, the particles of a liquid are a little closer than the gas but do have an indefinite shape.

The solid has particles closely packed with no space, which makes them have a definite shape and volume. When a container filled with particles is shaken, there is no movement as they are very closely packed, like solid.

Therefore, the container represents solid matter.

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Uranium is an element that is often used in nuclear power plants. Uranium atoms are very large, and the substance can be dangerous if it is not carefully contained.

Answers

Answer:

What is the volume of a sphere with a radius of 24 units? A. 92167 units O B, 230477 unite 3 O c. 18A324 units D. 13,8247 units

Explanation:

cells possess defense systems, because molecules such as play a role in aging and disease in high concentrations. a.Antioxidant;Hydrogen peroxide. b.antioxidanr;catalase.
c.oxidant:potassium prrmanganate. d.oxidant;hydrogen peroxide. e.antioxidant;potassium permanganate​

Answers

Answer:

I would say C

Explanation:

Based on what I can understand it is asking about how cells age and disease. Something like that.

Oxidents result in aging and creating free radicals. Hydrogen peroxide forms in cells to break down old organelles.

Help please!! Thanks

Answers

B. Fossil Fuels

For every tonne of coal burned, approximately 2.5 tonnes of CO2e are produced. 6 Of all the different types of fossil fuels, coal produces the most carbon dioxide. Because of this and it's high rate of use, coal is the largest fossil fuel source of carbon dioxide emissions.

Predict the appearance of an igneous rock that formed as magma
cooled quickly and then more slowly.

Answers

Answer:

It would have smaller crystal sizes at first- closer to the surface

and larger crystals in the middle/core

Explanation:

smaller crystals are formed at faster cooling rates

larger crystals are formed at slower cooling rates

Which of the following is true about subatomic particles?
The mass of a neutron is equal to the mass of a proton


Neutrons have no charge and are the lightest subatomic particle


Electrons are negatively charged and are the heaviest subatomic particle


Protons are positively charged and the lightest subatomic particle

Answers

Answer:

Neutrons have no charge and are the lightest subatomic particle

Explanation:

Nucleus of an atom contains three subatomic particles. These are protons, neutrons and electrons.

Mass of a proton is  [tex]1.67[/tex]×[tex]10^{-27}[/tex]kg.

Mass of a neutron is  [tex]1.67[/tex]×[tex]10^{-27}[/tex]kg.

Mass of an electron is [tex]9.1[/tex]×[tex]10^{-31}[/tex] kg.

Also, protons are positively charged, neutrons have no charge and electrons are negatively charged.

Therefore, we can conclude that the mass of a neutron nearly equals the mass of a proton.

Which of the following individuals may be required to undergo HIV testing? a) Employees of a small business with limited health insurance resources b) A technician at an HIV testing lab c) A convicted sex offender d) A nurse applying for a job at a hospital

Answers

Answer:

c) A convicted sex offender

Explanation:

HIV testing is mandatory in the U.S. in certain cases, including for: blood and organ donors, military applicants and active duty personnel, federal and state prison inmates under certain circumstances and newborns in some states.

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