New forms of drug-resistant bacteria can evolve quickly because
A
when a drug kills most of the bacteria, the ones left to breed are those that have a natural resistance to the drug.

B
when scientists genetically engineer bacteria they use natural selection.

C
scientists use extinction to selectively breed bacteria.

D
a drug causes mutations in the bacteria, leaving only mutated bacteria left to breed.

Answers

Answer 1

Answer:

A

Explanation:


Related Questions

There are 300 falcons living in a forest at the beginning of 2013. Every year, there are 50 falcons born and 30 falcons that die.

What is the the population growth rate?

Answers

Answer:

The growth rate is 20+ Falcons are born per year.

Explanation:

Hope this helps!

Answer:

Population in the world is currently (2020) growing at a rate of around 1.05% per year (down from 1.08% in 2019, 1.10% in 2018, and 1.12% in 2017). The current average population increase is estimated at 81 million people per year. Annual growth rate reached its peak in the late 1960s, when it was at around 2%.

Explanation:

What are tiny organisms that float near the surface of freshwater and marine environments?

Answers

Answer:

These tiny creatures are referred to as "plankton."

Plankton includes plants and animals that float along at the mercy of the sea's tides and currents. Their name comes from the Greek meaning "drifter" or "wanderer."

Discuss 3 different types of mutations that can happen

Answers

Answer:

Explanation:

Un cambio en la secuencia de bases en el ADN o ARN se conoce como mutación . ¿La palabra mutación te hace pensar en ciencia ficción y monstruos con ojos de insecto? Piensa de nuevo. Todos tienen mutaciones. De hecho, la mayoría de las personas tienen decenas o hasta cientos de mutaciones en su ADN. Las mutaciones son esenciales para que ocurra la evolución. Son la fuente principal de todo el material genético nuevo -nuevos alelos - en una especie. Aunque la mayoría de las mutaciones no tienen efectos en los organismos en que ocurren, algunas mutaciones son beneficiosas. Incluso las mutaciones dañinas rara vez causan cambios drásticos en los organismos.

there are 3 types of mutations, base substitutions - single base mutations are called point mutations. Point mutations are the most common type of mutation and there are two other types. point mutations occur in DNA sequence seconding proteins are either silent, missense or nonsense. Deletions is the second type of mutation, this results when one or more base pairs are lost from the DNA. If one or two based are deleted the translation frame is altered resulting in a garbled message and nonfunctional product. A deletion of three or more bases leave the reading frame intact. A deletion of one or more corona result in a protein missing or more amino acids. this may be deletions or not. And lastly insertions this is when you have additional base pairs which may lead to frameshifts depending on whether or not multiples or three base pairs are inserted. combinations of insertions and deletions leading to a variety of outcomes are also possible.

Please transcribe this DNA code into the complementary
RNA code.
TCG GGG CTA ATC AAG

Answers

The transcribed code for the DNA as complementary to the RNA code is AGC CCC GAU UAG_ UUC . Th the option D is correct.

What is the RNA code?

The RNA code is made of four nucleotides that are adenine, guanine, the cytosine, and the uracil. The code makes a unit known as a codon which forms the amino acid. The  RNA consists of a code that is kept by the cell DNA and signals the formation and end of the protein synheis.  

Find out more information about the RNA code.

brainly.com/question/12476181

What percentage of your DNA do you get from either parent ? Explain.

Answers


You receive 50% of your DNA from each of your parents, who received 50% of theirs from each of their parents, and so on. In the chart below you can see how the amount of DNA you receive from a particular ancestor decreases over generations. If you go back far enough, there is a chance that you inherited no DNA from a particular ancestor.

Which air mass would produce warm, humid weather in the summer?

Answers

Answer: maritime tropical air mass

Explanation: The oceanic tropical air mass regularly creates a warm, muggy climate in the mid-year. The air mass begins from over the warm water of the jungles and Gulf of Mexico, where warmth and dampness ordinarily move to the air above from the water beneath.

2 Sa mga paraan na ipinakilala ng Kagawaran ng Edukasyon ( deped ) tulad ng modular learning, simual learning, blended learning, ete ano ang pin ma? Ipaliwanag kung bakit ito ang napili mong paraan. please po i give you brainliest​

Answers

Answer:

tanungin mo guro mo hahahah

is chloroplast an Organ an organelle a process an organic molecule or a building block

Answers

It is an organelle because it is kind of like a tiny organ that is inside a cell.
Organ
Cell
Organcell
Organelle

Thats how I remember! I hope it helps!

What makes a species successful in an ecosystem?​

Answers

Answer:

Beside the intensive loss of forest cover [2], fragmentation of the pristine remnants further affects species [3] and limits their ability to move into adequate areas. Thus the ability to cope with altered landscapes is crucial for the persistence of a species, especially in the face of climate change.

What can scientists assume about individuals with similar anatomy?
I

Answers

Answer:

Scientists compare the anatomy, embryos, and DNA of living things to understand how they evolved.

Explanation:

Evidence for evolution is provided by homologous structures. These are structures shared by related organisms that were inherited from a common ancestor. Other evidence for evolution is provided by analogous structures

Scientists use anatomy for the study of the evolution of DNA other organs and how they are modified.

Similar anatomy means homologous structure as they provide the information for evolved structure. They provide evolutionary evidence.

What is an analogous structure?

Organisms that have developed alongside special paths may also have analogous systems—that is, anatomical functions which can be superficially just like one another (e.g., the wings of birds and insects). Although such systems serve comparable functions, they have got pretty special evolutionary origins and developmental patterns.

Thus it is clear that scientists assume individuals with similar anatomy for evidence of evolution.

To know more about  homologous  refer to the link ;

https://brainly.com/question/21956934

What are the two kinds of rainforests?

Answers

Answer:

tropical and temperate.

Explanation:

Tropical rainforests are found closer to the equator where it is warm. Temperate rainforests are found near the cooler coastal areas further north or south of the equator. The tropical rainforest is a hot, moist biome where it rains all year long.

what is the process of VEGETATIVE PROPOGATION?? PLEASE HELP ME and Thank you so much!!

Answers

Vegetative propagation is an asexual method of plant reproduction that occurs in its leaves, roots and stem. This can occur through fragmentation and regeneration of specific vegetative parts of plants.

Use the table to answer the following question.

Gravity and inertia are the two forces that keep Earth in its orbit as it travels around the Sun. What would happen if the force of inertia disappeared?


A.

Earth would break apart.


B.

Earth would be pulled into the sun.


C.

Earth would leave the solar system.


D.

There would be no changes in Earth's orbital path

Answers

B, without mass, there wouldn’t be anything holding the earth together. Without mass, the earth wouldn’t stay in orbit around the sun. The earth would simply float apart.

Answer:

D.

Explanation:

if the force of inertia disappeared there would be no changes in earth's orbital path.

the reasons is that earth would stop moving as soon as there was no longer any force being applied

Humans select from among the naturally occurring genetic variations in a species in the
process of
A) natural selection
B) genetic equilibrium
C) artificial selection
D) survival of the fittest

Answers

Answer:

A) Artificialal Selection

Explanation:

The selection is controlled by humans seeking particular phenotypes

True or false
An allele is the name given to the position of a gene on a chromosome.

Answers

Answer:

false

Explanation:

Which of these phenotypes are recessive?... check all that apply.
Ww
Straight Hairline
tt
Smooth Chin
DD
No Freckles
Detached earlobes

Answers

Answer:

tt - smooth chin

Explanation:

have a great day!

What are the three involved elements in Photosynthesis?

Answers

Answer:

Carbon dioxide , water and water

What are the seven taxon characteristics of a human again?
K
ד ר ת

Answers

Answer:

I believe they are  Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

Explanation:

How does El Niño affect climate? (1 point)
O Warm water move westward, making coastal South America cooler.
O Warm waters move eastward, making coastal South America warmer.
O Winds blow the warm water southward, making coastal Alaska cooler.
Winds blow the warm waters northward, making coastal Alaska warmer.

Answers

Answer:

B. Warm waters move eastward, making coastal South America warmer.

Explanation:

During El Niño the warm surface water moves to central and eastern pacific ocean

Answer:b

Explanation:

which substance is harmful to the body when consumed (A) calcium (B) Cobalt chloride (C) iron (D) phosphorus (E) sodium chloride​

Answers

Answer:

I think it's probably E, sodium chloride

For the growth curve to continue increasing, which of these must occur?
The environment must provide a habitat for a large variety of organisms.
The organisms must migrate to a new environment.
The organisms must adapt to a new habitat.
The resources in the environment must be unlimited.

Answers

Answer:

Out of all the answer choices I would say the answer is A: The environment must provide a habitat for a large variety of organisms. i hope this helped you.

Explanation: This is because it would not make sense for the orginisms to move and we can say that the 3rd answer is true but it doesnt make the most sense and we can also eliminate the last one

which 4 hormones are released by the adrenal gland?

Answers

Answer:

1. adrenaline

2. cortisol

3. aldosterone

4. epinephrine

Find the volume of the cylinder to the nearest tenth 30 in 10 in

Answers

Answer:

9424.78 inches cubed

Explanation:

V=πr^2h

π*100*30

Have a good day :)

Help help help help help help

Answers

Answer:

Mammal 2 and 4 are most related, why?

Explanation: They have TCT, CAG, CTG and CA, the only ones it doesn't have is the last ones, A and G, making it the only difference. 1 has 2 differences to 2, 3 differences to 4, and 3 has 2 differences as well, therefore 2 and 4 have the least differences.

Answer:

2 and 4

Explanation:

You can see their patterns match except for the last letters of 2 and 4

There is a species of frog on an island that puzzles scientists. The proportion of frogs with no stripes is greater than the proportion of frogs with
stripes. This is puzzling because the unstriped trait is recessive (s), and the striped patterns are due to dominant alleles (S). Also, natural selection
seems to support the striped trait.
How do genetic factors most likely account for the proportion of traits in the frog population?
A. Most of striped frogs and unstriped frogs have the genotype ss.
OB. Most of striped frogs have the genotype SS and the unstriped frogs have the genotype ss.
C. Most of striped frogs have the genotype SS and the unstriped frogs have the genotype Ss.
OD. Most of striped frogs have the genotype Ss and the unstriped frogs have the genotype ss.
Hi

Answers

[tex] \implies \huge \tt \underline \red{ánswer}[/tex]

Should ever come back...Should ever come back....

in your own words,what is the definition for vitamin?
please help me with this. im having writers block right now and i cant think.

Answers

Answer: vitamin is

any of a group of organic compounds which are essential for normal growth and nutrition and are required in small quantities in the diet because they cannot be synthesized by the body.

Please match the correct term to it definition

Answers

Answer:

Explanation:

1: Is symbiosis

2: is eutrophication

3: Predation

4: Trophic efficiency

5: Greenhouse effect

6: Nutrient cycling

Hope this helps!

If you need more help with this kind of subject reach out too me!

Please give brainliest! :)

cual es la diferencia netre los cloroplastos y la cianobacteria si ambos son bacterias fotosinteticas???

Answers

Answer:

Encontré esto en un texto de microbiología, tal vez sea útil.

Explanation:

"Las cianobacterias y los cloroplastos de las plantas tienen ambos fotosistemas, mientras que las bacterias fotosintéticas anoxigénicas sólo utilizan uno de los fotosistemas. Ambos fotosistemas son excitados simultáneamente por la energía luminosa. Si la célula requiere tanto ATP como NADPH para la biosíntesis, entonces llevará a cabo una fotofosforilación no cíclica".

Si estoy equivocado, pido disculpas. También lo he sacado de un traductor así que si suena mal también me disculpo por ello.

Last month, Sarah documented how her city suffered from acid rain. What type of pollution should the people in Sarah’s city try to control?

Answers

Answer: I need more information to answer.

Explanation:

Air pollution would be a big thing that the city should try to control. Acid rain releases chemicals that are very bad for the environment

please help!!!!!!!!!!!

Answers

Answer:

Typically, the nucleus of a cancer cell is larger and darker than that of a normal cell and its size can vary greatly. Another feature of the nucleus of a cancer cell is that after being stained with certain dyes, it looks darker when seen under a microscope

Explanation:

In contrast to normal cells, cancer cells don't stop growing and dividing, this uncontrolled cell growth results in the formation of a tumor. Cancer cells have more genetic changes compared to normal cells, however not all changes cause cancer, they may be a result of it.

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g a mass of 1.3 kg is pushed horizontally against a massless spring with a spring constant of 58 n/m until the spring compresses 19.5 cm if the mass is then released what is the kinetic energy of the mass when it is no longer in contact with the spring ignore friction What is Ten Divided by Twelve point Fifty before each item.1. Which of the following refers to chemical digestion?A. Chewing of food B.. Grinding of food C. Tearing of food D. Amylase in the saliva2. In what organ most of the absorption process happen?A. Stomach B. Small intestine C. Large intestine D. Esophagus3. It is a digestive disorder wherein the body has the inability to digest sugar?A. Gastritis B. Lactose intoleranceC. Diarrhea D. Peptic ulcer4. The following are part of the digestion process EXCEPTA. ingestion B. assimilationC. excretion D. respiration5. It helps to moisten the food and contains the enzyme amylase.A. SalivaB. Stomach C. Mouth D. Teeth6. 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What is the best treatment for a person who suffers lactose intolerance?A. Take antibioticsB. Balanced dietC. Take lactase supplements before eating food contains dairy D. Practice healthy lifestyle12. What happen during the assimilation process?A. Absorbed nutrients are delivered into the cellB. Breaking down of food into tiny piecesC. Elimination of waste product of the digestion process D. Absorption of nutrients from the digested food13. How does the enzyme amylase help in the absorption of nutrients?A. It helps in the digestion of proteins.B. It helps in the digestion of fats.C. It helps in the digestion of carbohydrates. D. It helps in the digestion of lipids.14. It is characterized as loose bowel caused by an infection of bacteria that we get from the food we eat.D. GERDA. DiarrheaC. GastritisB. Peptic Ulcer15. How saliva helps in the digestion process?A. It reabsorbs nutrients from the food we eat.B. It contains the enzyme amylase that helps in the digestion of starch.C. 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