Answer:
G:C, higher, higher,
Explanation:
G:C have 3 Hydrogen Bonds, A:T only 2. So, G:C bind stronger to each other, so higer ionic strengh and higher melting temperature.
*the last gap and the first gap seem to be the same question
If phosphorous has 5 valence electrons, how many does sulfur have?
genetic drift simulation:
When you look at your chart, what did you notice about the fluctuations? What would you expect to see over time? were you ever close to losing an allele?
Answer:
yes
Explanation:
The consequences of genetic drift are numerous. It leads to random changes in allele frequencies. Drift causes fixation of alleles through the loss of alleles or genotypes. Drift can lead to the fixation or loss of entire genotypes in clonal (asexual) organisms
State two arguments people might make for not preserving botana curus.
The two-argument people might make for not preserving botana curus are they take a long time to grow, so it may not be worth the effort; there are organisms that are similar, and it may be expensive.
What is botana curus?Botana curus is a precious plant because it yields Carol, a substance that can be used to treat cancer.
Curol cannot be manufactured in a lab. Botana curus grows slowly and is an endangered species, so its ability to produce large amounts of Curol is limited.
Thus, the two arguments are they take a long time to grow, so it may not be worth the effort and there are organisms that are similar, and it may be expensive.
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15. Which phase of biotechnology product development often involves testing in live animals?
A. Phase 2 and Phase 3 trials
B. Phase 1 and Phase 2 trials
C. Phase 4 trials
D. Preclinical trials
Preclinical studies involves the testing of live animals. The correct option is D.
What is biotechnology?The use of biology to solve problems and the to create valuable goods is referred to as biotechnology. The most common method is genetic engineering, which allows scientists to manipulate an organism's DNA.
Clinical research, a part of biotechnology includes the following phases:
Preclinical studies.Phase 0.Phase I.Phase II.Phase III.Phase IV.Testing live animals is a part of a preclinical trial that can involve certain vaccination, drug, medication, etc.
Thus, the correct option is D.
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Human skin color varies widely around the world, and children do not always exhibit the exact same coloring as their parents. Based on this information, what is true about human skin color?
Answer:
Your skin colour is based on millions of years of evolution depending on where your ancestors lived and their living conditions. Skin colour varies on where you live (or came from). Children will have different tones or shades of skin from their parents due to human skin colour having multiple genes. This is an example of polygenic inheritance.
Explanation:
see the picture below to see how different skin colours depend on where they live:
hope this helps:)
Earth’s global average temperature is 14°C. Explain one change that can be made in this sim, that will dramatically increase the temperature.
Answer:
This graph illustrates the change in global surface temperature relative to 1951-1980 average temperatures. Nineteen of the hottest years have occurred since 2000, with the exception of 1998, which was helped by a very strong El Niño. The year 2020 tied with 2016 for the hottest year on record since record-keeping began in 1880 (source: NASA/GISS). This research is broadly consistent with similar constructions prepared by the Climatic Research Unit and the National Oceanic and Atmospheric Administration.
The time series below shows the five-year average variation of global surface temperatures. Dark blue indicates areas cooler than average. Dark red indicates areas warmer than average.
The “Global Temperature” figure on the home page dashboard shows global temperature change since 1880. One gets this number by subtracting the first data point in the chart (-0.16°C) from the latest data point (0.85°C).
A 2000kg vehicle travelling 30m/s takes 10s what force did the vehicle experience
A.-7000 km•m/s2
B.-6000km•m/s2
C. -5000km•m/s2
D.-8000km•m/s2
The average force vehicle experiences is 6000N. The correct option is B.
What is Newton's second law of motion?It states that the force F is directly proportional to the acceleration a of the body and its mass.
F =ma
Given is a 2000kg vehicle travelling 30m/s takes 10s.
It takes t = 10s to come to rest, then the acceleration will be
a = velocity /time
a = 30/(10)
a = 3 m/s²
According to the Newton's second law of motion.
F = 2000 kg x 3 m/s²
F =6000 N
Thus, the average force vehicle experiences is 6000N.
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The process that divides dna equally between two daughter cells is called
interphase
mitosis
cytokinesis
o the cell cycle
The process of mitosis divides DNA equally between two daughter cells, i.e., option B is correct.
What is mitosis?Mitosis is a way of dividing cells in which the chromosome number remains the same as in parent cells, this is why it is also referred to as equational division.
Mitosis is the process by which a cell separates its duplicated DNA, eventually separating its nucleus in half.
Thus, the correct option is B.
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Select the correct answer from each drop-down menu.
which domains of sustainability are referenced here?
domain
the
domain incorporates cultural norms that directly impact sustainable development. the
focuses on the protection and preservation of natural and artificial resources.
The domain incorporates cultural norms that directly impact sustainable development. hence, option B is correct.
What do you mean by economic domain?The economic sphere is a social one that includes connected human behaviors and exchanges and does not exist in a vacuum. Individuals, companies, organizations, and governments can all act as economic agents.
Cultural norms are incorporated into the economic sector and have a direct effect on sustainable development. The conservation and preservation of both natural and man-made resources are the major objectives of the environmental domain.
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Which is an unseen factor that affects the carrying capacity of the ocean?(1 point)
Sunlight is an unseen factor that affects the carrying capacity of the ocean.
What is Carrying capacity?Carrying capacity may be defined as the maximum number of individuals that can be supported by a habitat.
The other options under this question are water chemistry, water availability, space, and sunlight.
Water availability and space both are unlimited in the ocean habitat, while the water chemistry remains the same throughout the ocean.
Therefore, sunlight is an unseen factor that affects the carrying capacity of the ocean.
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Which of the following are Phylogenetic trees also know as ?
Which type of primary brain tumor usually arises in the walls of the fourth ventricle in children and in the lateral ventricles in adults
Answer:
Primitive neuroectodermal tumor (PNET)
Explanation:
They usually occur in early childhood but may become symptomatic in adult life. In children, they commonly occur in or near a spinal fluid sac known as the fourth ventricle and are called medulloblastomas.
The nervous system is responsible for all of the following except which of these?
1.producing red and white blood cells
2. sensing external stimuli
3. connecting sensory and motor neuron signals
4.controlling automatic body processes, such as breathing
Answer:
1.producing red and white blood cells
This is done by bone marrow and other organs.
Answer:
1. Producing red and white blood cells
Explanation:
Blood cells are not part of the nervous system and are not produced by the nervous system.
Viruses do not possess all the characteristics of life. Identify those characteristics that viruses display and those they don’t display.
Viruses are organisms that share traits with both living and non-living organisms. The virus' genetic material is made up of both DNA and RNA.
What are viruses?
A virus is an infectious microorganism made up of a nucleic acid segment (DNA or RNA) encased in a protein coat. A virus cannot multiply on its own; instead, it must infect cells and make copies of itself using the host cell's components. A virus frequently kills the host cell in the process, resulting in harm to the host organism.
Viruses have the following characteristics:
Viruses have an exterior capsule layer and a specified boundary. Only the host cells provide energy to the virus. They thrive and mature, multiplying their numbers solely within the host cells.
Viruses lack the following characteristics:
A virus is a single-celled animal with no more than one cell. In the virus, there is no internal organization. If a virus is present outside of the host environment, it does not grow, develop, or require energy. Viruses do not remove trash.
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There is an initial population size of 11; after 3 births, 4 deaths, 2 immigrations
and 5 emigrations---what is the remaining population size?
6
7
8
9
None of the above
Answer:
7
Explanation:
Population size of 11
After 3 births
4 deaths
2 immigrations
5 emigrations
11+3-4+2-5=7
Which dance resulted from the development of a culture technique for muscle cells
Rhythm Salsa resulted from the development of a muscle cell culture technique.
How to do cell culture?To obtain a cell culture, it is necessary to disaggregate the original tissue, which can be by mechanical force or enzymatic process. These cells are grown in an adherent layer in a single layer (monolayer) or in organoid format (3D culture) or in suspension.
With this information we can conclude that rhythm Salsa resulted from the development of a muscle cell culture technique.
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URGENT
State two reasons why some molecules can pass through a certain membrane, but other molecules can not.
Answer:
Molecules with bigger charge or size can not pass through every membrane but other molecules can.
1. bigger size
2. bigger charge
3. electronegativity
Explanation:
Hope this helps you!
In an experiment, a scientist decides to study the effect of exercise on cholesterol levels in people. He studies two set of people—those who exercise every day for an hour and those who don’t exercise at all. In this case, the statement that people who exercise for an hour may have lower cholesterol levels is
. To test this statement, the scientist would measure cholesterol levels in exercisers and non-exercisers. The cholesterol levels would be
The exercise reduces the levels of the low-density lipoproteins or the bad cholesterol. It is found that, the people, who exercise daily have a low level of low-density lipoproteins, and an increased level of high-density lipoprotein, which is also known as good cholesterol.
What is Scientific hypotheses?Scientific hypotheses, in general, are the premises within a given theory, which can be validated on the basis of a scientific method, contributing to the formulation of new hypotheses. In this experiment the theory says that cholesterol levels between people who exercise and people who do not exercise is different. Within this theory, the statement says that people who exercise for an hour may have lower cholesterol levels, is a hypothesis that will be confirmed or refuted after the experiment.
The dependent variable is summarized in the phenomena or factors explained or identified, because they are influenced or determined by the independent variable. In this experiment the independent variable is the performance (or not) of exercises. Exercise is what influences or determines cholesterol levels in this study. Thus, cholesterol levels are a dependent variable.
Hence, to check whether a person exercises regularly or not, the scientist can determine the cholesterol level.
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What is the difference between class crustacean and class Arachnidan?
Answer:
The main difference between arachnids and crustaceans is the type of habitat they live for instance crustaceans live in an aquatic environments but archanids live on lands
See the file attached!!
i hope my handwriting is understandable...
identify a process that could cause a new pesticide resistant gene to appear in a mosquito population (short written response)
Drop a paper of piece of thermopol and piece of plastic from a height of 10 to15 feet note the time for each object to hit the ground why does the paper more time than thermopoland how did thermopol more than the plastic piece how did it happen explain
Yes, it is possible because making a paper fold takes far less time than making a thermal or plastic item. The gravitational force is the reason behind this.
What is thermocol?Polystyrene, a complicated substance, is used to make thermocol. When heated to over 100°C, it changes to a liquid condition and then returns to a solid state when cooled.
A gravitational force is defined as which draws particles or bodies together.
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Based on the concept of the global conveyor belt, what happens to ocean water as it moves from Antarctica to the equator?
It transfers thermal energy to deeper layers of the ocean.
It becomes less dense and rises to the surface.
It transfers thermal energy to the area, warming the equatorial waters.
It becomes more dense and sinks to the ocean bottom.
What happens to the ocean water as it moves from Antarctica to the equator is : ( B ) It becomes less dense and rises to the surface.
Concept conveyor beltThe conveyor belt is a system of oceans which transports water and propel deep current of water bodies across the globe based on the differences in water densities.
As the ocean water moves from the Antarctica to the equator the cold ocean water mixes with the warm ocean water at the equator, which makes the water less dense and rises to the surface.
Hence we can conclude that What happens to the ocean water as it moves from Antarctica to the equator is It becomes less dense and rises to the surface.
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What is most likely the reason Earth moves in an orbit around the sun?
Group of answer choices
Because the sun remains in motion with respect to Earth
Because Earth and the sun exert a weak gravitational pull on each other
Because Earth exerts a stronger pull on the sun than the sun exerts on Earth
Because the sun's mass creates a gravitational force that pulls Earth towards it
Answer:
because the suns mass creates a gravitational force that pulls the earth towards it
the study of the space around
Earth and within the universe,
including meteoroids and
galaxies that are trillions of
miles away
Astronomy is the the study of the space around Earth and within the universe, including meteoroids and galaxies that are trillions of miles away.
What is Astronomy?Astronomy is the study of everything in the universe beyond Earth's atmosphere.
It is the the study of the space around Earth and within the universe, including meteoroids and galaxies that are trillions of miles away.
In summary, it includes objects we can see with eyes, like the Sun , the Moon , the planets, and the stars .
It also includes objects we can only see with telescopes or other instruments, like faraway galaxies and tiny particles.
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9) Genetic variation is the source for evolution. Without a variety of phenotypes, there would be no differential survival upon
which natural selection can act. Which of these are sources of the genetic variation within a population? Select ALL that apply.
A) Errors caused by DNA polymerase during replication.
B) The failure of DNA to separate during DNA replication
C) Changes to the ribosomal structure during translation
Eliminate
D) Induced changes to the genome from environmental factors
E) Fertilization of two haploid gametes during sexual reproduction.
The genetic variation occurs due to induced changes to the genome from environmental factors, fertilization of two haploid gametes during gamete fusion. The correct options are D and E.
What is genetic variation?The presence of differences in gene sequences between individual organisms of a species is referred to as genetic variation. It allows for natural selection, which is one of the primary forces driving life's evolution.
The genetic variation occurs due to induced changes to the genome from environmental factors, fertilization of two haploid gametes during gamete fusion.
Thus, the correct options are D and E.
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Answer
a,d, and e
Explanation:
i did it
How does the central nervous system integrate incoming information.
Answer: Impulses
Explanation: Impulses are brought together creating sensations either adding to memory or helping produce thought that translate sensations into perceptions
In algae and plants photosynthesis happens in the?
1. Suppose that a sample of beef broth initially contains
16 bacterial cells. After 4.0 h, there are 1.6 × 106
bacterial cells in the sample. Assuming that the
bacteria reproduce at a constant rate, calculate the
growth rate of the bacterial population for the given
time interval.
From the calculations, the rate of growth of the culture is 2.88.
What is exponential growth problem?We apply the exponential growth problem when there is an exponential increase.
Thus, we have; P =Poe^rt
P = amount at time t
Po = amount originally present
t = time taken
r = rate of growth
1.6 × 10^6 = 16e^4r
1.6 × 10^6/16 = e^4r
1.0 * 10^5 = e^4r
ln 1.0 * 10^5 = ln e^4r
11.5 = 4r
r = 11.5/4
r = 2.88
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Why is less energy needed for reaction to occur when enzyme is present?
Answer:
enzymes don't affect the free energy of the reactants or products
Explanation:
That is, they don't change whether a reaction is energy-releasing or energy-absorbing overall. That's because enzymes don't affect the free energy of the reactants or products. Instead, enzymes lower the energy of the transition state, an unstable state that products must pass through in order to become reactants.
Blisters on the genitals can occur during birth in babies affected by which of the following:
A.) Gonorrhoea
B.) Sypillis
C.) HPV
D.) Herpes
PLEASE CHOOSE THE CORRECT ANSWER. TY