Answer:
Mitochondria
Explanation: Mitochondria are oblong shaped organelles found in the cytoplasm of all eukaryotic cells. In plant cells, they break down carbohydrate and sugar molecules to provide energy, particularly when light isn't available for the chloroplasts to produce energy.
Give reason why the permeability of both the membrane is same for fatty acid?
Answer:
Because of the amphipathicity and conical molecular shape of fatty acids.
Explanation
They can efficiently incorporate into lipid membranes and disturb membrane integrity, chain packing, and lateral pressure profile. These phenomena affect both model membranes as well as biological membranes. We investigated the feasibility of exploiting fatty acids as permeability enhancers in drug delivery systems for enhancing drug release from liposomal carriers and drug uptake by target cells. Saturated fatty acids, with acyl chain length from C8 to C20, were tested using model drug delivery liposomes of 1,2- dipalmitoyl-sn-glycerol-3-phosphocholine (DPPC) and the breast cancer MCF-7 cell line as a model cell. A calcein release assay demonstrated a reduction in the membrane permeability barrier of the DPPC, proportionally to the length of the fatty acid. Differential scanning calorimetry (DSC) and dynamic light scattering (DLS) experiments revealed that C12 to C20 fatty acids could stabilize DPPC liposomal bilayers and induce large structures, probably due to liposome aggregation and bilayer morphological changes. On the other hand, the short fatty acids C8 and C10 tend to destabilize the bilayers and only moderately cause the formation of large structures. The effect of fatty acids on DPPC liposomes was not completely transferrable to the MCF-7 cell line. Using cytotoxicity assays, the cells were relatively insensitive to the fatty acids at apoptotic sub-millimolar concentrations. Increasing the fatty acid concentration to few millimolar substantially reduced the viability of the cells, most likely via the induction of necrosis and cell lysis. A bioluminescence living-cell-based luciferase assay showed that saturated fatty acids in sub-cytotoxic concentrations could not reduce the permeability barrier of cell membranes. Our results confirm that the membrane perturbing effect of fatty acids on model membranes cannot simply be carried over to biological membranes of live cells.
When a person is suddenly cut by a sharp object, a nervous impulse is sent along a sensory neuron to the spinal cord. The impulse is immediately transmitted through motor neurons to produce a response. Which of the following correctly identifies and describes this response?
A.It is a leamed response that does not occur in infants and small children
B. It is a reflex response that causes various muscles to contract in order to move away from the object.
C.It is a conditioned response that occurs only to prevent injury!
D. It is a voluntary response that is initiated only after the impulse has been caried to the relevant area of the brain
Answer:
B. It is a reflex response that causes various muscles to contract in order to move away from the object.
Explanation:
Name a reason an animal would go extinct.
Answer:
losing their habitatclimate changereduced food supplyHunting and illegal traffickingIntroduction of invasive speciesPollution of air and water bodieslack of genetic diversityPlease mark me as brainliest.
The Competitive Exclusion Principle states that: Group of answer choices a. When two species occur together, competition is always prevented by some behavioral adjustment. b. Two species that use a limited resource in the same way cannot coexist indefinitely. c. Two species that use the same community can use limited resources in different ways. d. When two species each compete for the same resource in the same location, competition will always evolve into commensalism. e. None of the choices are correct.
Answer:
b. Two species that use a limited resource in the same way cannot coexist indefinitely
Explanation:
The competitive exclusion principle establishes that two or more species that share the same niche requirements, in the same habitat, and are in biological competition for the same resources, won´t be able to coexist indefinitely in the same space if the other ecological factors are constant. This is because species with identical niches have the same necessities, which means that they will compete for the same resources. If these species have the same requirements, they can not coexist. When the superior competitor occupies the inferior competitor´s fundamental niche, the first species has advantages over the second species and monopolizes all the resources. From that moment, the inferior species is displaced and must adapt to use other resources changing its behavior, or must migrate to another area where it can get access to its needs or get extinct.
When two competing species coexist, this is because of niche partitioning or niche differentiation. One of the species uses a different resource, occupies another area, or uses the resources at different times during the day. If there is not any differentiation between them, the dominant species displaces the weak species.
Niche specialization might produce genotypic separation. Subpopulations of a species diverge into new species.
So, competitive exclusion refers to the exclusion of the inferior competitor by the superior competitor when there is not habitat differentiation, and both species can not share the same niche.
Answer:
B. Two species that use a limited resource in the same way cannot coexist indefinitely.
Explanation:
The Competitive Exclusion Principle states that: Two species that use a limited resource in the same way cannot coexist indefinitely.
PLZZZ HELP ASAP
Which of the following statements about DNA is correct?
A. Some kinds of organisms do not have DNA.
B. Alleles are two versions of a gene.
C. One gene can code for several proteins.
D. Cells in different tissues or organs (skin, eye, bone, etc.) contain different DNA.
As a predator population increases, the population of its prey will often
A decrease.
B increase.
C remain the same
Assume that sound A has a decibel level of 10 and sound B has a decibel level of 30. How many times louder is sound B than sound A?
Answer:
3 times louder
Explanation:
10x3=30
If sound A has a decibel level of 10 and sound B has a decibel level of 30 then its a thrice time louder.
What is sound and types of sound?There are two types of sound:
Audible and Inaudible.Inaudible sounds are sounds that the human ear cannot detect.
Whereas human ear hears frequencies between 20 Hz and 20 KHz.
Thus, its a thrice time louder.
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1.1 Cell division is found to occur in:
A growth
B reproduction
С
cancer
D all options.
Answer:
Cell division is found to occur in both groth and reproduction.The answer is D
Answer:
D all options.
Explanation:
Cancer
Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death.
Reproduction
Cell division usually occurs as part of a larger cell cycle. Both of these cell division cycles are used in the process of sexual reproduction at some point in their life cycle.
Growth
In unicellular organisms, cell division is the means of reproduction; in multicellular organisms, it is the means of tissue growth and maintenance. Most tissues of the body grow by increasing their cell number, but this growth is highly regulated to maintain a balance between different tissues
Hope this Helped!!!
What is the role of each of the following types of organisms in an ecosystem?
Answer:
The living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem. Consumers are animals and they get their energy from the producers or from organisms that eat producers.
I Hope This Helps A Little Bit.
How can a property of water contribute to its ability to change stream corridors and affect erosion and deposition patterns?
Answer:
Water Shapes the Watershed Changes in runoff can increase erosion and sedimentation of the land surface. Excessive runoff can cause downstream flooding and accelerated erosion of the land.
Study the processes that makes cells work
Answer:
One cell divides into two in a process called mitosis. Mitosis produces two genetically identical “daughter” cells from a single parent cell. Another type of cell division, meiosis, creates four daughter cells that are genetically distinct from one another and from the original parent cell. Only a few special cells can perform meiosis: those that will become eggs in females and sperm in males
Explanation:
A: the leopard population will increase
B: the hawk population will increase
C: the impala population will decrease
D: the scorpion population will decrease
please answer
C: the impala population will decrease
Answer:
I remember doing this in 7th grade its A. The leopard population will increase because they are eating the baboon tu survive the baboons are decreasing while leopards are increasing
ma
Question 1: Identify the organelle above *
Ribosome
O Mitochondria
O Nucleus
Chloroplast
Answer:
B
Explanation:
Which animal is an example of benthos? (1 point)
diatom
turtle
oyster
whale
Answer:
am pretty sure it's diatom
25 POINTSSS + BRAINLYYY PLS HELP
Last one
beause instead of wasting the rest they redo getting waste in the hot air and so etc is incorrect and you cant transfer 100 perent since its 40.
The peppered moth provides a well-known example of natural selection. The light-colored form of the moth was predominant in England before the Industrial Revolution. In the mid-nineteenth century, a dark-colored form appeared. The difference is produced by a dominant allele of one gene. By about 1900, approximately 90% of the moths around industrial areas were dark colored, whereas light-colored moths were still abundant elsewhere. Apparently, birds could really find the light morhs against the soot-darkened background in industrial areas and, therefore, were eating more light moths. Recently, use of cleaner fuels has greatly reduced soot in the landscape, and the dark-colored moths have been disappearing.
1.What forces are causing evolutionary change in these populations?
2. Should the two forma be considered separate species?
3. How would you determine if these are separate species?
4. Give a prediction for what future generations of moths will look like and explain why.
Answer:
a) Natural selection
b) Different
c) Different genotypes
d) Evolution of dark colored moth species from the light colored moth species
Explanation:
a) The pressure of selection due to the changing color of bark of tree because of air pollution caused by industries leads to natural selection in a way that dark colored moth are emerging
b) Yes the two forms of moths are two different species.
c) The genotype of the two species is different
d) All the moths will be of dark color in order to save themselves from predation. This will lead to evolution of dark colored moth species from the light colored moth species and hence will lead to extinction of light colored moth
PLZZZ HELP ME
I WILL REPORT ANY LINKS
Which statement correctly
compares humidity in warm and cold air?
A. Warm air holds less moisture than cold air.
B. Warm air will always hold the same amount of moisture as cold air.
C. Warm air can hold more moisture than cold air.
D. Neither warm or cold air can contain water vapor.
Answer:I believe it is c, it makes the most sense to me. I apologize if I’m wrong
Explanation:
The statement which correctly compares humidity in warm and cold air is that warm air can hold more moisture than cold air. Thus, the correct option for this question is C.
What is Humidity?Humidity may be defined as the amount of water vapor present in the atmosphere of living organisms or an ecosystem. If there is a lot of water vapor in the air, the humidity will be high. The higher the humidity, the wetter it feels outside. On weather reports, humidity is usually explained as relative humidity.
High humidity levels are more likely found in warm air. This is because warm air holds more water at higher temperatures. Due to this, warm air has the capacity to hold a lot of moisture.
But on contrary, fewer humidity levels are more likely found in cold air. This is because cold air holds less water at lower temperatures. Due to this, cold air does not have the capacity to hold a lot of moisture.
Therefore, the statement which correctly compares humidity in warm and cold air is that warm air can hold more moisture than cold air. Thus, the correct option for this question is C.
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Which of the following is true about DNA?
A.Some kind of organism do not have DNA
B.Alleles are two versions of gene
C.One gene can code for several proteins
D.Cells in different tissues or organs contain different DNA
Answer: C
Explanation: A single gene can produce multiple protein sequences. Two different forms of the same protein, known as isoforms, can have different and even completely opposite functions.
How can biotechnology be used to develop medical treatments and give an example?
Answer:
These products help treat and prevent diseases. From the Ebola vaccine to mapping human DNA to agricultural impacts, medial biotechnology is making huge advancements and helping millions of people. Some of the most recent uses of biological tech is work in genetic testing, drug treatments, and artificial tissue growth
Explanation:
Biotechnology is the field that combines the living system and the technology to create or develop the product. Pharmaceutical medicines and diagnose can be created by biotechnology.
What is the role of biotechnology in medicine?The development of synthetic hormone and vaccines to fight and produces the deficient enzymes in the body of the organisms is possible by biotechnology.
The development of synthetic human insulin is an example of biotechnology in the field of medical treatments. The insulin was created in the bacterial system by the process of genetic engineering.
Therefore, biotechnology can be used in medical treatments.
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What greenhouse gasses come from burning coal
Answer:
C02
Explanation:
When coal is burnt or other fossil fuels, C02 is emitted.
Answer:
Coal combustion releases Carbon dioxide and nitrous oxide
which part of the cinnamon plant does cinnamon spice come from?
Answer:
the dried inner bark
Explanation:
dried inner bark
Match the words.
1. discouragement 2. motivation 3. self-talk 4. thought patterns
A. the types of positive or negative things that you are thinking about on a regular basis
B. any feelings of sadness, futility, or lack of motivation that keeps you from succeeding as well as you could in a task or goal
C. an internal monologue you have with yourself about the way you view yourself in the daily situations of life
D. an internal desire to accomplish a task or move forward toward a goal
Answer:
1.) B
2.) D
3.) C
4.) A
Explanation:
Explanation:
1 goes with B
2 goes with D
3 goes with C
4 goes with A
If the ultraviolet light damages the DNA what will be its effect on the protein synthesis? [Serious Answers pls]
Explain how the TATA box and transcription factors work together to ensure that RNA polymerase is transcribing the correct region of the DNA molecule.
Answer:
How does RNA polymerase know where to start transcribing a gene?
To begin transcribing a gene, RNA polymerase binds to the DNA of the gene at a region called the promoter. Basically, the promoter tells the polymerase where to "sit down" on the DNA and begin transcribing. ... A promoter contains DNA sequences that let RNA polymerase or its helper proteins attach to the DNA.
TATA box and transcription factors work together to ensure that RNA polymerase is transcribing the correct region of the DNA molecule.
What is transcription?Transcription, the synthesis of RNA from DNA. Genetic information flows from DNA into protein, the substance that gives an organism its form.
The TATA box is able to define the direction of transcription and also indicates the DNA strand to be read. Proteins called transcription factors can bind to the TATA box and recruit an enzyme called RNA polymerase, which synthesizes RNA from DNA.. The TATA box marks a point just before the point at which transcription begins, so that RNA polymerease transcribe the correct region of DNA molecule.
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How has the Gila Monster adapted to the breeding patterns of its prey the Gambel quail and desert cottontail rabbits?
The Gila Monster has therefore adapted to consume its entire yearly energy supply in a few meals in the spring. It stores much of its energy as fat in its tail so it can survive the rest of the year.
Answer:
As the Gila monster consumes the eggs or young of the desert cottontail and Gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. However, for this, the Gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.
Explanation:
E2023
What would happen to the planets if the sun’s gravity did not exist
Answer: we would die
Explanation: because theres no graviy tpo
Which observational tool helped astronomers Arno Penzias and Robert Wilson discover the existence of the cosmic microwave background (CMB)?
A.
optical telescope
B.
radio telescope
C.
a digital camera
D.
space telescope
Answer:
Radio Telescope
Explanation:
What are dreams and why do we wish that our dreams would become our reality?
Answer:
A dream is a succession of images, ideas, emotions, and sensations that usually occur involuntarily in the mind during certain stages of sleep. The content and function of dreams are not fully understood, although they have been a topic of scientific, philosophical and religious interest throughout recorded history.
Explanation:
Bianca laughed while eating cereal and ended up aspirating a piece of cereal. What
happening?
Answer:
She is probably choking or having trouble breathing since the food entered the lungs or airway by accident.
Explanation:
i hope this helps and is right :)
how are adaptation and variation similar?
Answer:
Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations. Random mutations are the initial cause of new heritable traits. For example, a rabbit can't choose to have a different fur color.