Answers
Answer:
b
Explanation:
Related Questions
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:
A
Explanation:
Parasitism, mutualism, and commensalism are all forms of symbiotic relationships. How does parasitism differ from mutualism and commensalism? A. Neither organism is harmed in parasitism. B. Three or more species must be involved in a parasitic relationship. C. Both organisms are harmed in parasitism. D. One organism is harmed in parasitism.
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Answer:
The answer is D, the host is only negatively affected in a parasitic relationship.
Explain Newton’s First Law and give an example of it
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Answer:
When a person jumps out of a moving vehicle, he falls forward due to inertia of motion. One example of Newton's first law in real life is, when you are walking with a glass filled with water, you will notice that the water spills at certain locations when you walk at faster pace. The water inside the glass will remain at rest until you move.
Explanation:
Answer:Newton's first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
An object at rest stays at rest.
Explanation:
1. Match each term with the correct definition. a. Abdomen b. Chest c. Genitals d. Pelvis e. Sternum ____ External reproductive organs ____ The middle part of the trunk, containing the stomach, liver and spleen ____ The upper part of the trunk, containing the heart, major blood vessels and lungs ____ Long, flat bone in the middle of the front of the rib cage, also called the breastbone ____ The lower part of the trunk, containing the intestines, bladder and reproductive org
Answers
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A. Abdomen:- The middle part of the trunk, containing the stomach, liver and spleen.
B. Chest:- The upper part of the trunk, containing the heart, major blood vessels and lungs.
C. Genitals:- External reproductive organs .
D. Pelvis:- The lower part of the trunk, containing the intestines, bladder and reproductive org.
E. Sternum:- Long, flat bone in the middle of the front of the rib cage, also called the breastbone.
Thanks Hope it helps.Las subunidades que forman el ADN se denominan:
Answers
1.adenina,
2.citosina,
3.guanina,
4.timina,
please help me in Science grade 8th
Answers
Answer:
Both earthquake and volcanoes are concentrated in specific regions.
Explanation:
The distribution of earthquake on earth is concentrated in specific zones where the plate tectonic meets or fuse with each other. Volcanoes are also concentrated in specific regions on the earth. Most volcanoes are concentrated on the edges of continents, on island chains, or long mountain ranges beneath the sea. There is a great relationship between earthquake and volcanoes because volcanic eruptions is the cause of earthquake in a region.
12. Which has NOT been linked to acid precipitation?
a. Toxic metal poisoning
b. Lower blood pH
c. Respiratory problems
d. Damaged monuments
Answers
Answer:
D
Explanation:
Lower blood pH has not been linked to acid precipitation. So, the correct option is (B).
What is Acid Precipitation?Acid rain is defined as rain or any other form of precipitation that is abnormally acidic, meaning that it contains high levels of hydrogen ions. Most water which include drinking water, has a neutral pH that exists between 6.5 and 8.5, but acid rain has a pH level lower than this and averages between 4–5.
Acid rain can be caused by natural causes, such as volcanic eruptions, while acid rain can also caused by human activities such as the burning of fossil fuels, manufacturing, oil refineries, electricity generation, and vehicles, all of which release sulfur and nitrogen oxides into the atmosphere.
Thus, lower blood pH has not been linked to acid precipitation. So, the correct option is (B).
Learn more about Acid Rain, here:
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Explain why it is important to prevent the extinction of species?
Answers
Answer:
Animals and plants depend upon each other, so the loss of one species affects others within that complex web of relationships.
Explanation:
Healthy ecosystems depend on plant and animal species as their foundations. When a species becomes endangered, it is a sign that the ecosystem is slowly falling apart.
I hope this helps :3
Answer:
Why is it so critical that we protect species? 1. Its ecological significance. Plant and animal species are the cornerstones of healthy ecosystems. When a species becomes endangered, it indicates that the ecosystem is deteriorating.
Explanation:
Water is carried though the trunk in the sapwood.
True
False
Answers
Answer:
true
Explanation:
hey i really need help in deciding the answer for the question
Answers
B. have a great rest of your day :)
What causes 37% of all pollution?
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Answer:
There are a variety of examples that cause the problematic issue of pollution- Usually air pollution can be caused by the alteration of gases, solid and liquid particles suspended into the air. If we were to contemplate on how human causes lead to pollution, vehicles exhaust fumes are possibly one of the most affecting in air pollution, as well as the exhaust from industrial factories and plants. Human reasons have majorly led to pollution.
Name the process through which gaseous exchange occurs.
Answers
Answer:
Diffusion
Explanation:
Diffusion is the spontaneous movement of gases, without the use of any energy or effort by the body, between the alveoli and the capillaries in the lungs.
13. Which of these statements about particulate matter less than 2.5 microns in diameter is true?
A. They can cause heart and lung disease.
B. They're produced from nitrogen gas (N.).
C. They're less of a threat than particulate matter that's 10 microns in diameter
D. They're the size of a human hair.
Answers
Answer:
Nitrogen Gas
Explanation:
penn foster
lesson 2
page 13
is the statement true or false? plant cells have chloroplast, but no mitochondria?
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Answer:
False
Explanation:
Plant cells have both but animal cells have only the mitochondria minus the chloroplast.
Hemophilia is a rare recessive genetic disorder in which the recessive version of the gene does not produce blood-clotting factors. A woman whose father had hemophilia marries a normal man. They have two children: a boy and a girl. What are the chances of the boy being a hemophiliac? _________ What are the chances of the girl being a hemophiliac? _________ Show your work with a Punnett Square.
Answers
Answer:25 , 0
Explanation:
XX©(mother being the carrier as her father was hemophilia- females can only be carrier of hemophilia ) when crossed with normal father produces offspring XX©, XY, XY©, XY. Therefore chances of boy being hemophilia=(1/4)*100=25.
Chances of girl being hemophilia= 0.
Hey guys! can someone write a summary on the topic of cloning?
Answers
Answer: Cloning describes the processes used to create an exact genetic replica of another cell, tissue or organism. The copied material, which has the same genetic makeup as the original, is referred to as a clone. The most famous clone was a Scottish sheep named Dolly
Explanation:
Answer:
Write your own work. I mean I know you did just had my answer deleted because I called you out the first time. So take the advice
Explanation:
Help ASAP do plz!!!!!
Answers
Answer:
C.) repeating the experiment
Explanation:
By repeating the same exact experiment, you will see if the first one was maybe a fluke or it was "real".
The principal enzyme involved in DNA replication is called _____________. The enzyme joins ________________ to synthesize a new _______________ strand of DNA. DNA replication is called ______________ because each new DNA molecule is made up of one original and one new strand.
complementary
DNA polymerase
nucleotides
semiconservative
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Answer:
The principal enzyme involved in DNA replication is called _DNA polymerase_. The enzyme joins _nucleotides_ to synthesize a new __complementary_ strand of DNA. DNA replication is called __semiconservative__ because each new DNA molecule is made up of one original and one new strand.
Explanation:
DNA replication is the process through which DNI molecule duplicates. This event takes place during the S stage of the interphase. So when the cell divides during mitosis or meiosis, each cell will get a complete set of chromosomes.
DNI replication is semi-conservative because each new molecule carries an original DNI strand and a new one. The fact that the new molecule is composed of an original strand makes it semi-conservative. The old existing strands are used to synthesize the new complementary strand.
The origin of the replication requires helicase enzymes to break hydrogen bonds and separate the two original strands. The topoisomerase enzyme is necessary to release tension. Other proteins are also needed to join the strains and keep them separated. Once the molecule is opened, there is a region named replication forks. DNA polymerase makes the new nucleotides enter into the fork and pairs them with the corresponding nucleotide of the original strand. Adenine pairs timine, and cytosine pairs guanine.
DNA strands are antiparallel, and replication occurs only in 5´-3´direction. So one of the strands will replicate continuously, while the other strain will be formed by short fragments known as Okazaki fragments.
Primers are needed to make the DNA polymerase work. Primers are small units of RNA and are placed at the beginning of each new fragment.
The circulatory system of the frog..
A. carries oxygen to all of the cells
B. carries food to all cells
C. carries water to all cells
D. all of the above
Answers
Answer: A
Explanation:
The blood carries oxygen and nutrients to cells and carries waste products away.
16. The rate of weathering depends primarily upon the area's _______________________.
Answers
Answer:
Climate
Explanation:
Hope this is right :)
Sorry if I get it wrong
na zdjęciu przedstawiono nietypowego ssaka który zamieszkuje Australia Zapisz nazwę ssaka ze zdjęcia następnie wyjaśnij na czym polega jego Wyjątkowość
Answers
Answer:
gdzie jest zdjęcie ssaka?
Explanation:
If a base is deleted, a _____ mutation occurs.
A. substitution
B. insertion
C. point
D. frameshift
Answers
Answer:
Option D. A frameshift mutation occurs.
Answer:
D. frameshift
Explanation:
If a base is deleted, a frameshift mutation occurs. Hope it helps you !!
in VDJ recombination occurs in the Group of answer choices variable region of the heavy chain. constant region of the light chain. variable region of the light chain. Both the light and heavy chain.
Answers
Answer:
constant region of the light chain.
Explanation:
The VDJ recombination is defined as the process where the T cells as well as the B cells are randomly assembled from the different gene segments. These are mainly known as the variables (V), the diversity (D) and the gene (G). This is done in order to generate the unique receptors which is also called as the antigen receptors so that they can collectively recognize the different types of the molecules. It mainly occurs in the constant region of the light chain.
Which would most likely cause a forced migration due to loss of habitat?
a short-term change
a long-term change
death
adaptation
Answers
Answer:
short term
Explanation:
Answer:
short
Explanation:
edg
PLZ help me I’m too slow
Answers
What is the original source of the energy stored in fossil fuels?
Answers
Answer:
the sun and previous organisms.
Explanation:
it's right
what are the functions of the following? (Make it simple)
Vacuole
Cell Membrane
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Answer:
Vacuole- Function of vacuole is they help to maintain water and minerals balance in cell.
Cell Membrance- The functions of cell membrane are:
They keep toxic substances out of the cell.It only allows sensitive material to enter and exist in cell.What does every living thing have to have? *
Chloroplast
Nucleus
DNA
Answers
Answer:
DNA
Explanation:
Answer:
Explanation:
Los cloroplastos son los orgánulos celulares que en los organismos eucariotas fotosintetizadores se van ocupando de la fotosíntesis. Están limitados por una envoltura formada por las dos membranas concéntricas y contienen muchas vesículas, los tilacoides, donde se encuentran organizados los pigmentos y demás moléculas que convierten la energía lumínica en energía química, como la clorofila.
El término cloroplastos sirve alternativamente para designar a cualquier plasto dedicado a la fotosíntesis, o específicamente a los plastos verdes propios de las algas verdes y las plantas. Aunque el reciente descubrimiento adiciona a más individuos en la lista, como lo es en el caso de Elysia chlorotica, que al digerir al alga Vaucheria litorea, adquiere los cloroplastos a sus tejidos, y gracias a esto, puede realizar la fotosíntesis.
Which of the following examples is NOT classified as composite volcano?
A. Mt. Fuji B. Mt. Rainier C. Mt. Mayon D. Mt. Paricutin
Answers
Answer:
C. Mt. Maton
Explanation:
not sure but hope it helps
Mt. Mayon examples is NOT classified as composite volcano.
What is Composite volcano?Cone-shaped composite volcanoes, also known as stratovolcanoes, are formed from numerous layers of lava, pumice, ash, and tephra. Composite volcanoes typically generate tall peaks rather than rounded cones because they are composed of layers of viscous material rather than fluid lava.
Calderas are occasionally created when the peak crater collapses. The most destructive volcanic eruptions in recorded history have been caused by composite volcanoes.
Apart from Earth, Mars is the only known location in the solar system with stratovolcanoes.
Therefore, Mt. Mayon examples is NOT classified as composite volcano.
To learn more about Composite volcano, refer to the link:
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When an evolutionary biologist designs an experiment to test a hypothesis, which term is used to describe the variable that the scientist changes among his/her groups of study organisms.
Answers
Explanation:
Controlled experiment =An experiment in which only one variable is changed
Independent variable= The variable that is deliberately changed in an experiment
Dependent variable =The variable this is observed and changes in response to the independent variable