Answer:
that specis lived for a long time
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.
A(n)\ is a system composed of living organisms and their interaction with the surrounding environment, where the main focus is the interaction and relationship between species .
1.habitat
2.biome
3.environemnt
4.ecosystem
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.
2. What nucleic acids are involved in the process of transcription?
Answer:RNA
Explanation:The main enzyme involved in transcription is RNA polymerase, which uses a single-stranded DNA template to synthesize a complementary strand of RNA.
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.
Oxytocin is a hormone that is released by the pituitary gland after a signal from the brain. The impacts of oxytocin release are shown here. The nervous, endocrine, and reproductive systems interact in a tightly controlled manner during the labor and delivery of a baby. Which of these statements describes why oxytocin is often administered by doctors to women who are scheduled to deliver their baby on a particular due date?
Answer:
Its this one
Explanation:
The nervous, endocrine, and reproductive systems interact in a tightly controlled manner during the labor and delivery of a baby.
Answer: C) Oxytocin will start and increase the frequency of contractions, which promotes the delivery of the baby using a positive feedback loop.
Explanation:
Got it right on the test :)
If you cross an Aa individual with another Aa individual, what will the genotype ratio be in the next generation? What will be the phenotype ratio?
Answer:
Aa x Aa makes Aa because its a dominant gene. each square represents 25% so if u have 2 squares with Aa for example the ratio will be 2:4 (so 50%) if the gene is recessive then for the next generation it will go down to 25% unless another Aa allele is introduced in the next generation
Explanation:
Answer:
AA : Aa : aa Dominant : Recessive
Genotype ratio=> 1 : 2 : 1 Phenotype ratio=> 3 : 1
Explanation:
A a
A AA Aa
a aA aa
↑
Punic Square
Write 3 sentences about what you learned yesterday about phases of the moon.
Answer:
1) There are 8 main phases of the moon: new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, and waning crescent.
2) A full moon occurs about once a month. (every 29.5 days to be exact)
3) The phases of the moon are caused by the light from the sun and the moon's orbit around the Earth.
The four main forces that drive evolution are mutation, natural selection, genetic drift, and gene flow. All of these forces can cause a change in what?
Answer:
Allele frequencies
Explanation:
The only component that is transmitted from generation to generation is the genetic material (genes), the fact that an individual leaves more descendants implies that their genetic variants (alleles) will be more represented in the next generation. The frequencies of the different alleles will change from one generation to another, and this change will be irreversible when the set of genes in the population is considered, since it is highly unlikely that a previous configuration will be returned in all gene variants. Hence, from a population point of view, evolution is ultimately a cumulative and irreversible change in the proportions of different gene variants in populations. The agents that change the allele (or gene) frequencies of populations, that is, factors of evolution, are mutation, genetic drift, migration, and natural selection. Mutation is a factor that increases genetic diversity. Natural selection is the process by which the gene frequencies involved with certain traits vary from generation to generation, since some variants of the trait have a greater capacity than others to survive and produce offspring. The mutation rate of a gene or DNA sequence is the frequency at which new mutations occur in that gene or sequence in each generation. In each generation there is a gene raffle during the transmission of gametes from parents to children which is known as genetic drift. In the absence of gene flow, gene drift will also lead to local differences in allele frequencies.
4. If the rock sample contains 20 mg of tritium 3, how much
will remain after 48 years?
Answer:
eeikekenejndxkkxlxxjdnenxll
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.
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
Clouds water cycle pls tell me :)
Answer:
Clouds exist in the atmosphere because of rising air. As air rises and cools the water in it can "condense out", forming clouds. Since clouds drift over the landscape, they are one of the ways that water moves geographically around the globe in the water cycle.
Answer:
Clouds exist in the atmosphere because of rising air. As air rises and cools the water in it can "condense out", forming clouds. Since clouds drift over the landscape, they are one of the ways that water moves geographically around the globe in the water cycle. There are four main parts to the water cycle: Evaporation, Convection, Precipitation
and Collection.
What is the probability?:
-0 percent
-100 percent
-50 percent
-25 percent
Which one please?
Answer:
The probability that this couple will have a child with Duchenne Muscular Dystrophy is 50/50
Explanation:
This Punnett square shows our woman as "xx" and our man at "xy". Knowing this, we can now look back at the Punnett square's results. Out of the four squares, two of them are fill with the woman's carried condition, but the other two are also filled with the man's. So, that leaves us with a 50 percent chance that their child will have DMD.
Hope this helped!
Sources: N/A
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:
Which traits do you think are very strictly determined by your genetic make-up (genotype)?
Answer:
Reproduction, growth and development, regulation, homeostasis, and energy processing.
Explanation:
Reproduction, growth and development, regulation, homeostasis, and energy processing are the traits or characteristics that are determined by the genotype. These traits are under the control of genes of an organisms and can be changed if the change in the genes occurs while on the other hand, the physical characteristics of an organisms are determined by phenotype means phenotype is responsible for the appearance of an organisms.
Name the organelle in which occurs in phase one and two of phtosynthesis
Answer: my axss burns
Explanation:
I drank too much
Answer:
light-dependent reaction and the calvin cycle
What type of bacteria or microbe causes decay in dead plants
Answer:
please give me brainlist and follow
Explanation:
Scientists call the organisms that decompose organic matter decomposers, saprobes or saprotrophs. Fungi and bacteria are not restricted to decomposing leaves and other plant materials.
Answer: fungi
Explanation:
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.
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Answer:
okk
Explanation:
Please help
Before entering into mitosis to be tightly coiled into an 'X'-shape, DNA can resemble a bowl of spaghetti. This is referred to as ___. *
A> Centromere
B>Chromatid
C>Chromatin
Answer:
Explanation:
the answer is chromatin. As the DNAvis thread like and highly/ tightly coiled there is no centromere. Later it gets condensed and becomes chromatid or chromosome and centromere is present in it.
calculate power when work is 20 J and time is 2 s
Answer:
10W
Explanation:
Power is the "ability to make work over time", so to get the power, just divide work by time.
20J/2s = 10 J/s = 10W
Answer:
10 watts
Explanation:
Power= work done/time
Power= 20J/2s
Power= 10 watts
How does our DNA cause us to have physical traits?
1) DNA bases come in different shapes colors and sizes
2) DNA makes up our body structure like muscles
3) DNA leads to a protein being produced in the body
Answer:
2) DNA Makes Up Our Body Structure Like Muscle
Explanation:
There Are Pairs In Our DNA That Determine Certain Physical Features Or Traits. ( These Are Called Gene's ) The Genes That You Have In Your Body Right Now, Makes Up Your Genotype. This Genotype Then Determines Your Physical Appearance, Which Is Called Your Phenotype!
How energy flows from one organism to another can be
shown in a?
Yo plz help me no links plzzzzz
The tectonic burial of sediments leads to the formation of metamorphic rocks.
a. TRUE b. FALSE
Answer:
B
Explanation:
Im sure this is false because i have the same question before
Which kind of map projection would you use to explore Antarctica?
Answer:
answer choices?
Explanation:
ASAP WILL MARK BRAINLEST The biosphere:
extends deep below the surface of the earth
reaches thousands of feet above the earth
ends at sea level
does not include the atmosphere
The biosphere:
extends deep below the surface of the earth
reaches thousands of feet above the earth
ends at sea level
does not include the atmosphere
Answer: The biosphere:
reaches thousands of feet above the earth
Explanation:
Answer:
The biosphere: reaches thousands of feet above the earth ends at sea level.
What's the answer?????????????
Answer: b
Explanation:
Gregor mendel observed traits in pea plants. He called the traits that he observed in the f1 generation______________.
Answer:
dominant traits i believe
Explanation
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.
To learn more about Relative humidity, refer to the link:
https://brainly.com/question/21494654
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