Answer:
Mutations can provide resistance to antibiotics If we were to treat the bacterial population with that specific antibiotic, only the resistant bacteria will be able to multiply; the antibiotic selects for them. These bacteria can now increase in numbers and the end result is a population of mainly resistant bacteria.
Explanation:
Even though mutation is rare in bacteria, it is still important to be concerned about bacteria. The reason is that if any mutation happens that converts the bacteria into antibiotic-resistant bacteria, then this would be harmful.
What is mutation?Mutation is a phenomenon in which a change is seen in an organism's genome. It may be induced by chemical factors, environmental factors, etc. The mutation may be positive or negative.
In a population, evolution is seen due to mutation. It is one of the factors behind evolution. In bacteria, the mutation happens too. If any sort of mutation happens that makes them antibiotic-resistant, then it would be harmful for humans. Humans take antibiotics that destroy harmful bacteria. If these bacteria mutate their genetic constitution and become resistant, a higher dose of antibiotic will be required next time to destroy such harmful bacteria.
Hence, mutations in bacteria are harmful even though they are rare.
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Explain the relationships and trade-offs among amounts of skin pigmentation, Vitamin D production, and protection from UV radiation.
Answer:
Ultraviolet radiation leads to DNA mutations in the melanocytes, which are skin cells that contain melanin. Melanin level is inversely associated with the ability of skin cells to produce vitamin D
Explanation:
Ultraviolet (UV) radiation is a well-known environmental factor that causes mutations in the DNA of melanocytes, which are skin cells that produce melanin. Moreover, melanin is a protective pigment whose main function is to block UV radiation, thereby protecting the body from DNA damage and, consequently, from cancer (skin cancer). Abundant melanin levels can decrease the ability of the body to synthesize vitamin D, the only vitamin that can be synthesized with sunlight. In consequence, darker skin is associated with a higher risk of having vitamin D deficiency.
What is keeping Northern Europe from freezing? * 1 point O Warm water from the south is being carried across the North Atlantic Warm water from the south is being carried along the equator Cold water is coming south from the arctic Cold water is rising along the African Coast
Answer:The ocean is constantly in motion, moving water from place to place via currents. The Gulf Stream brings warm water from the Gulf of Mexico all the way up to the Norwegian Sea. As the warm water comes in, colder, denser water sinks and begins moving south—eventually flowing along the bottom of the ocean all the way to Antarctica.
Explanation:
hope this helps :)
WILL GIVE BRAINLIEST!
__________ is a method of studying complex systems by reducing the components that are studied (e.g. studying cells in culture and using those results to understand what is going on in a complex disease).
Select one:
a.
emergent properties
b.
systems biology
c.
genomics
d.
reductionism
Answer: A.
Explanation: "An emergent property is a property which a collection or complex system has, but which the individual members do not have. In biology, for example, heart is made of heart cells, heart cells on their own don't have the property of pumping blood. You will need the whole heart to be able to pump blood."
Explanation for the incorrect answer:
"Systems biology is the computational and mathematical analysis and modeling of complex biological systems. It is a biology-based interdisciplinary field of study that focuses on complex interactions within biological systems, using a holistic approach to biological research. "
This is the study of the natural processes that occur in the environment and how humans can affect them?
A. Biodiversity
B. Environmental science
C. Ecology
D. Ecosystems
(Thank you for helping !)
Answer: Ecology is the study of organisms and how they interact with the environment around them. An ecologist studies the relationship between living things and their habitats.
Explanation:
In plant cells, how are chloroplasts and mitochondria related?
Group of answer choices
Chloroplasts manufacture food; mitochondria break down the food and convert it into energy.
Chloroplasts package nutrients; mitochondria deliver the nutrients to other parts of the cel
Chloroplasts absorb water from the surrounding tissue; mitochondria store water.
Chloroplasts direct the functions of the cell; mitochondria deliver messages to all parts of the cell.
Answer:
Chloroplasts manufacture food; mitochondria break down the food and convert it into energy.
Explanation:
Functions of chloroplasts: help make food
Functions of mitochondria: Break down the food and convert it into energy.
Functions of vacuole: stores water
Functions of the nucleus: direct the functions of the cell
Answer:
Chloroplasts
Explanation:
Crossing over occurs at the ends of chromosomes, rather than near the centromeres. As a result of crossing over, sister chromatids are no longer identical to each other. For crossing over to occur, homologous chromosomes must align precisely early in prophase I so that nonsister chromatids can exchange corresponding segments of DNA. Crossing over prevents homologous chromosomes from separating during meiosis I.
Answer:
What is the question?.....
Why is carbon a good atom for building macromolecules or polymers?
Do you think a virus should be considered a living thing? Why or why not?
Answer:
no
Explanation:
bc you can easily die from it if you have a disease or a condition. and you have newborns that are not immune into the world yet so they can get rlly sick from any virus.
Number 6 please answer
___________________________________________________________
Crab Rave
___________________________________________________________
Answer:
the answer is A.
Explanation:
Ive taken this test before like last week so y E a h
How do fossils provide a record of the history of life on earth
Answer: Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today.
Explanation:
Answer:
fossils are the preserved remains or traces of animals, plants, and other organisms from the past. they're showing life on earth was once different from how it is now.
Explanation:
What means Resource?
Answer:
stock or supply of money materials staff and other assets that can be drawn on by people or can be organization in order to function effectively.
Answer:
a stock or supply of money, materials, staff, and other assets that can be drawn on by a person or organization in order to function effectively is resource .it is of two type human and natural resources.
The chain of meiosis
Answer:
The chain of meiosis is Prophase I, Metaphase I, Anaphase I, Telophase I, Prophase II, Metaphase II, Anaphase II, and Telophase II.
Hope this helps! If it did, please give me brainliest! It would help me a lot! Thanks! :D
What is the message system of the body, made up of nerve cells, that transmits electrochemicals signals throughout the body?
A. Nervous system
B. Endocrine system
C. Lymphatic system
D. Immune system
Answer:
A Nervous System
Explanation:
The nervous system is made up of neurons, specialized cells that can receive and transmit chemical or electrical signals.
Start a discussion on Homeostasis. List facts and opinions, then compare and contrast.
Answer:
- Homeostasis is the ability of living systems to maintain a steady and uniform internal environment to allow the normal functioning of the systems.
- It is the tendency to achieve equilibrium against various natural and environmental factors.
- Homeostasis results in a dynamic equilibrium, where continuous changes keep on taking place, and yet steady conditions are maintained.
- Homeostasis is mainly involved in managing various internal variables of the living system like body temperature, pH of various fluids, the concentration of different ions, and the body sugar level.
- A number of regulatory mechanisms are employed to resist changes in the body against environmental and bodily factors.
- Homeostasis can be maintained by separate organs or by the entire body at once.
Maintaining homeostasis/Homeostasis Mechanisms
Homeostasis is maintained by a complex system that consists of individual units working in a particular sequence to balance a given variable. All homeostasis mechanisms consist of four separate units, which are:
1. Stimulus
The stimulus is something that results in changes within the system involving the variable.
The stimulus represents that the variable has moved away from its normal range, initiating the process of homeostasis.
One example of this is the increased temperature of the body above 37°C due to various causes. The increased temperature indicates that the temperature of the body has gone higher than its higher range.
2. Sensor/ Receptor
The sensor or receptor is the sensing unit of homeostasis, where it monitors and responds to the changes in the body.
The changes in the system are realized by the sensor, which then sends the information to the control unit.
The nerve cells and receptors like thermoreceptors and mechanoreceptors are examples of sensor/ receptors.
3. Control unit
Once the information is sent to the control unit, it tallies the changed value to its normal value.
If the value is different from the normal value, the control center activates the effectors against the stimulus.
The thermoregulatory unit in the hypothalamus of the brain that controls the temperature of the body is an example of the control unit.
4. Effector
Effectors can be muscles, organs, glands, or other similar structures that are activated as a result of the signal from the control unit.
An effector is a target which is acted upon by the control unit to bring the value of variable back to normal.
The effector essentially counteracts the stimulus to nullify its effect.
In the case of thermoregulation, the sweat glands are effectors that are acted upon by the thermoregulatory unit to produce sweat so as to bring the value of body temperature back to its normal value.
Will get brainliest for both
Answer:
Ultra Violet for the first one and infrared radiation for the second
Sorry if wrong
Water is an example of a(n)
Answer:
a/n = authors note :))
Explanation:
Please help me with my homework .I really do not understand these questions ,help!
Alpha particles, also called alpha rays or alpha radiation, consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus. They are generally produced in the process of alpha decay, but may also be produced in oth
Estelle wants to find out which plants are most abundant in her yard. Which kind of scientific investigation should she use
Answer:
The answer is "a field study"
Explanation:
A scientific investigation is a finding process through which scientist makes observations on the world and things in it and looking for possible answers through research and the other scientific process.
A field study is a type of scientific Investigation where findings are carried out on the subject to be investigated while in their natural environment outside the laboratory. The most important thing is the subject to be investigated is not changed from its natural settings and data are collected directly.
>:( im mad. y am i mad its bc i had to tell a officer that she was 18 and that she was lying saying she was 14 >:(
Answer:
Dangg thats tuff :(
Explanation:
tuff- you should be able to tell by her looks dude
(i know it's a joke-)
~iwa-chan
Property of water that makes transpiration to occur
Answer:
cohesion
Explanation:
One of water's most distinctive properties is cohesion—that is, the tendency of water molecules to "stick" to one another. In plants, this cohesion results in columns of water that stretch through the plant's xylem, from the roots all the way to the leaves.
Hope this helps:)
What biometrics are measured to determine growth in a forest?
Answer:
In forestry, it encompasses the determination of dimensions, form, weight, growth, volume, health and age of trees, individually or collectively.
During nitrogen fixation, decomposers convert nitrogen from soil and plants. What do they convert these nutrients into?
A. ammonium
B. free nitrogen
C. nitric oxide
Which statement about evolution is correct?
a
Individuals can change their behavior, so individuals can evolve.
b
Evolution applies to genetic changes over time in an entire population..
c
Evolution applies to genetic changes over time, so depending on the lifespan of the organism, they may have time to evolve.
d
Populations of organisms do not change, so if a variation in the organism's genetic makeup occurs, a new population is started.
Answer:
Its C i thing......................
Explanation:
...
Definition of Prokaryotic:
Your own words
Write a scientific explanation that explains why the tree-frog species are different colors.
Claim: [Fill in the Blanks with your answer]
Evidence: [Fill in the Blanks with your answer]
Reasoning: [Fill in the Blanks with your answer]
Answer:
Claim: Various factors can tree frogs to change color, such as outdoor temperature, brightness of light and moistness of the air.
Evidence: According to the National Wildlife Foundation "Tree frogs can be a variety of colors, but most of the species found in the United States are green, gray, or brown. Some of them, like the squirrel tree frog (Hyla squirella), are chameleon-like in their ability to change color."
Reasoning: Other factors can cause the variation of colors in tree frogs, these can be used as defense mechanisms to protect or camouflage themselves among their surroundings
Explanation:
To answer these types of questions you just go through it as a process step by step.
Imagine that you are hiking and discover an outcrop of sedimentary rock. The rock is arranged in three distinct layers that appear to be undisturbed. When you examine the layers more closely, you observe fossils in the bottom and middle layers. What inferences can you make about these fossils based upon your observations and your knowledge of the law of superposition?
Answer:
The age of fossils are in millions.
Explanation:
These fossils were present on the earth millions of years ago due to different and unique structure of the fossil. The fossil is present in the bottom of the middle layer indicates that the more age of fossil i.e. millions of years according to the law of superposition. This law states that in an undisturbed layers of rocks, the top layer is the younger layer than middle and bottom layers which is older than the top layer, so we can say that fossils from deeper layers are older than fossils from the top layers of rocks.
Integrated Science Respiration and Air pollution any one, atleast 1
Answer:
Number 4 here.click on the picture
Gaia is a prized dairy cow that produces a very large volume of milk. An animal breeder is debating whether to produce clones of Gaia. If the cloning process is successful, which outcome is MOST likely? A. All of the clones have the same gene-controlled traits as Gaia. B. The genes of the clones allow them to produce more milk than Gaia could produce. C. The clones are genetically identical with one another, but not with Gaia. D. The clones are genetically similar with one another and with Gaia, but are not identical.
Answer:
its D
Explanation:
What term do sociologists use to describe when people act together?
A. Comradeship
B. Compromise
C. Chaos
D. Collectivity
Answer:
d
Explanation:
Sociologists study human behavior, organization, and interaction. They monitor the operations of social, religious, political, and economic institutions and groups. Collectivity is the term that sociologists use to describe when people act together.
What comes under sociology?Sociology is the study of social life, social change, and the social causes and consequences of human behaviour.
Sociologists look at how people interact in groups, organizations, and communities.
The term that sociologists use to denote the act of people together is collectivity.
Thus, the correct option is D.
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An air temperature of -18C is equal to
Answer:
-0.4 F
255.15K
Explanation: