Answer: The Miller - Urey experiment is an experiment that was conducted by Stanley Miller and Harold Urey last 1950's. The hypothesis that they had tested and demonstrated was that several organic compounds could be formed by simulating the conditions of Earth's atmosphere.The Miller-Urey experiment provided the first evidence that organic molecules needed for life could be formed from inorganic components. Some scientists support the RNA world hypothesis, which suggests that the first life was self-replicating RNA.
Explanation:
Which of these is true for a fetus by the end of the first trimester of fetal
development?
A. Its weight is half what it will be at birth.
B. Its lungs are fully developed.
O C. Its placenta has served its purpose.
.
D. Its external sex organs have formed.
Answer:
the answer is A :)!!!!!!!!!
Muscles are named in a variety of ways; the muscles on the sides of the head are named according to their
a. size.
b. location.
c. action.
d. location of insertion.
Answer:
Muscles are named in a variety of ways; the muscles on the sides of the head are named according to their location.
The oxygen cycle is closely related to which other cycle?
A. The carbon cycle
B. The nitrogen cycle
C. The phosphorus cycle
Answer:
A
Explanation:
that what i think
i don't know if I'm right
1. Which of the following most accurately complete the statement below -
An increase in biodiversity result in
A. More competition for abiotic factors
B. Less competition for biotic factors
C. An increase in the sustainability of an ecosystem
D. A decrease in the sustainability of an ecosystem
Answer:
The correct answer is - C. An increase in the sustainability of an ecosystem.
Explanation:
Biodiversity is the variety of different biological species and populations on the earth or in an ecosystem. Biodiversity helps in maintaining health by providing food and other resources. Higher biodiversity healthier the earth.
Sustainability is the ability to maintain the ecological process and its structure and function in case of external stress for a longer time. The more sustainability of an ecosystem the healthier the ecosystem. The biodiversity of an ecosystem provides sustainability to the ecosystem. An increase in biodiversity will lead to a more sustainable ecosystem.
Many desert mammals have developed a nocturnal lifestyle. This means that during the day they sleep underground in their burrows, and they come out to eat and play at night. What is a good reason for a desert fox to show this pattern of behavior?
Answer:
A good reason why a desert fox shows this pattern of behavior is to protect themselves from cold conditions since at nighttime, it gets very cold in the desert!
Explanation:
Nocturnal is a type of animal behaviour shown when the animals are active at night time and inactive at daytime. Desert fox shows this behaviour so that it can avoid the hot daytime of the desert.
What is nocturnal behaviour?Nocturnal lifestyle is the behaviour adopted by animals that are active at night time and are inactive during the daytime. During the daytime, they rest in the cool burrows, holes and underground canals to prevent the loss of water and to protect themselves from the extremely hot environment.
The desert animals like desert foxes have adapted the nocturnal lifestyle to avoid the extreme heat during the daytime and sleep in their underground burrows. Instead, they come out during the night when it is cool in deserts to eat and play.
Nocturnal lifestyle is shown by the diurnal animals that rest and sleeps in the burrows, holes and cool places during the hot time of the day.
Therefore, the desert fox shows a nocturnal lifestyle.
Learn more about a nocturnal lifestyle here:
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Can someone help me with the order of the carbon cycle ?
Answer:
First what is it? Carbon cycle is, nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.
1.Carbon moves from the atmosphere to plants. In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide (CO2). Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth.
2.Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too.
3.Carbon moves from plants and animals to soils. When plants and animals die, their bodies, wood and leaves decays bringing the carbon into the ground. Some is buried and will become fossil fuels in millions and millions of years.
4.Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration.
5.Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas. Each year, five and a half billion tons of carbon is released by burning fossil fuels. Of this massive amount, 3.3 billion tons stays in the atmosphere. Most of the remainder becomes dissolved in seawater.
6.Carbon moves from the atmosphere to the oceans. The oceans, and other bodies of water, absorb some carbon from the atmosphere. The carbon is dissolved into the water.
Explanation: This should help
What happens to water on Earth’s surface as it is heated by the sun? What is this process called?
Explain your answer.
Answer:
As the water is heated by the sun, water vapor is created and released into the air (process is called evaporation)
Explanation:
The heat coming from the sun heats up the water droplets and turns those droplets from a liquid into a gas (water vapor)
Help, please. Bio assignment and is due tonight. Population density typically decreases with increasing body size. Why do you think this is the case?
explain how mutation evolution might
occur in a population
Answer:
mutations create a new particular gene, a new allele. If that allele is passed down to the next offspring and the next, the mutation would be carried throughout the population. Some of the species in the population might not show any symptoms of a mutation or not feel the effects of it, but pass it down. If the mutation is neutral (causing no harm or no good), it may be passed down. If the mutation is beneficial to the species, and helps them survive, it may be passed down more. If the mutation is harmful, the mutation may eventually stop being passed down, and start to only appear if something happens genetically (mutation still may happen, but not because of passing down from parent to offspring).
Explanation:
Artificial Selection is another name for _____________.
Answer:
selective breeding
Explanation:
Artificial selection is also known as selective breeding. Selective breeding refers to the process of breeding plants or animals selectively.
Which of the following is not true?
A. Humans rely entirely on technological adaptations in order to thrive in various environments and they do not exhibit biological adaptations.
B. All humans living today belong to a single species.
C. Humanity cannot be classified into discrete, bounded geographic categories because variation in most traits exists along clines.
D. Ecological and social environments lead to biological differences between individuals.
E. Biological differences across human populations are in part due to biological adaptations to local environments.
Please, serious answers only, don't search it up. Can an animal adapt into a new species? If so, why?
Answer:
Hi how are you doing today Jasmine
Answer:
Yes, an animal can adapt into a new species through a process called speciation. Speciation occurs when a population of animals undergoes significant changes over time, leading to the formation of a new species that is different from the original one.
Explanation:
REASONThe main reason for this adaptation and the emergence of a new species is natural selection. Natural selection is the process by which individuals with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring. Over many generations, these advantageous traits become more common in the population, while individuals without these traits become less common.
When a population of animals faces different environmental conditions or habitats, it can create diverse selection pressures. Some individuals may possess traits that allow them to better adapt to these new conditions, giving them a higher chance of survival and reproduction. As these advantageous traits become more prevalent in the population, they can eventually lead to reproductive isolation.
Reproductive isolation occurs when individuals from the original population can no longer mate and produce fertile offspring with individuals from the newly adapted population. This can happen due to genetic differences and changes that have accumulated over time. When reproductive isolation is complete, the two populations are considered separate species.
SUMMARYOverall, the process of adaptation and the formation of new species is driven by natural selection, which favors traits that enhance an organism's chances of survival and reproduction in specific environments. Over time, these changes can accumulate, leading to the development of distinct species.
PLEASE MARK AS BRAINLIEST IF SATISFIED WITH THIS ANSWER
Mutation comes from the Latin word mutare,
meaning "to change." How can mutations change an organism's traits?
Answer: Mutation can affect an organism by resulting to a change in the number and structure of chromosomes (chromosomal mutation). A typical example of this type of mutation is Down's syndrome where the individual contains 47 instead of 46 chromosomes.
Mutation can also result to a change in the nucleotide sequence of the DNA molecule in a particular region of a chromosome(Gene mutation) an example of genetic mutation is sickle cell anemia
Explanation:
Fresh steak is said to have both negative and positive redox potential. Discuss how the redox potential affects the microbial ecology of the food
Answer:
Increases redox potential decreases microbial growth inside food.
Explanation:
The redox potential is considered as one of the most complex indicators of the physical conditions of microbial cultures. The measurement of redox potential could be very useful for the determination of qualitative and quantitative parts of the microbial contamination. During the bacterial growth, the redox potential of the medium decreases. Redox potential is a measure of the tendency of a biological species which can be acquire or lose electrons through ionization. If the redox potential of the medium is increases, there will be lower growth of microbes in the food and vice versa.
PLZ HELP ASAP (BRAINLIEST)
The orbital radii of four planets in our solar system is shown in the following table.
Orbital Radii
Planet Orbital Radii (AU)
W 5.2
X 0.72
Y 0.37
Z 19.1
Which planets are likely to be inner planets?
W and X
X and Y
Y and Z
X and Z
Answer:
x and y
Explanation:
x and y have the smallest orbital radius so they are likely to be inner planets while w and z have bigger orbital radius so the probability of them being inner planets is low.
Hope this helps.
6. Samples of atmospheric air and exhaled air were analysed by four groups
of students for oxygen and carbon (IV) oxide content. The following are
the results, expressed in volumes per thousand:
(i) Amount of oxygen in atmosphere = 200
(ii) Amount of oxygen in exhaled air = 160
(iii) Amount of carbon (IV) oxide in atmosphere = 300
(iv) Amount of carbon (IV) oxide in exhaled air =41
Explain the difference in volume of each gas between the atmosphere and
the exhaled air.
Answer:
Due to difference in volume of both atmosphere.
Explanation:
There is difference in volume of carbondioxide and oxygen gas between the atmosphere and the exhaled air because of the volume difference of atmosphere and exhaled air. The volume of atmosphere is larger than the body from where the gases are exhaled. The body has lower space for these gases so these gases are less in concentration in the exhaled air which the body releases as compared to the atmosphere where the concentration of these gases are larger.
Which of the following is necessary for a geothermal plant to function?
Your answer:
biomass
fossil fuels
heated rock
hydrogen
sunlight
Answer:
Geothermal power plants use hot water to generate steam to turn a turbine for electricity generation. Since the heat of the water is the essential component of a geothermal power plant, these active systems are typically located where hydrothermal reservoirs exist.
Question 7 0410
The process of
releasing energy
is when two stoms combine to form a larger atom,
Answer here
Answer:
Nuclear fusion
Explanation:
Nuclear fusion is a process whereby the nuclei of two smaller atoms combine to form a much larger atom, accompanied with the release of energy. This is opposed to nuclear fission where a larger atom splits into simpler and smaller atoms.
According to this question, the process of releasing energy when two stoms combine to form a larger atom is called NUCLEAR FUSION. A very common example of nuclear fusion is the combination of hydrogen atoms in the sun to produce Helium atom, with the release of heat energy.
What are sister chromatids?
O the matched set of two chromosomes
O the protein structures moving the chromosomes
O the middle region of a replicated chromosome
O he two identical copies of one chromosome
Answer:
hi how are you doing today Jasmine
Use the drop-down menus to identify the organelles labeled on the animal cell to the right. Label A Label B Label C Label D
The identification of the organelles labeled on the animal cell to the right are:
Label A : D Label B : BLabel C : CLabel D : A What is an animal cell?An animal cell is a multicellular cell that is present in all animals. The main distinction between an animal cell is that it is made up of without cell wall.
Animal cells do not contain the things such as vacuole chloroplast that are present in plant cells and the cell walls. They are not unicellular because animals are always multicellular.
As the animal cell is a multicellular cell it contains cell organelles like mitochondria endoplasmic reticulum, ribosome, a nucleus that contain the genetic material of the animal.
Thus, the correct options are Label A : D, Label B : B, Label C : C, and Label D : A.
To learn more about animal cells, refer to the below link:
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#SPJ2
state what action muscles can complete
Answer:
Flexion
Extension
Abduction
Addiction
Explanation:
hope it helps
whoooooo is goo day 72819
Answer:
Hi how are you doing today Jasmine
Answer:
Thank you and have a good day.
A transcriptional repressor that controls the transcription of gene A is not normally active unless bound by an effector molecule X. In a certain cell, the domain of the repressor that binds to the silencer of gene A is mutated so that the repressor-X complex can no longer bind to its recognition site. With all other factors being the same, what effect do you predict on the transcription of gene A if X is increased in the cell and the cell is already expressing gene A
Answer:
Transcription of gene A is not affected
Explanation:
A transcriptional repressor is a DNA/RNA-binding protein that acts to suppress gene expression and/or protein synthesis by binding to target sequences. Moreover, a silencer is a DNA region that binds to particular transcriptional repressors in order to suppress gene expression. In this case, the transcriptional repressor is activated by binding to an effector molecule X (e.g., another protein). In consequence, and since the activated repressor-X complex is not more able to bind the silencer of gene A, it is expected that such complex will not be able to affect transcription of the target gene.
4. which of these substances cannot pass through cell membranes?
A.Starch. B.Glycerol.
C. Amino acids. D. Monosaccharides
Answer:
C. Amino acids. D. Monosaccharides
Explanation:
I think this is the answer hope it helps!
Which of the karyotypes shown is from a normal female?
Answer:
Karyotype C is from a normal female
Aiden is having soup for lunch when the doorbell rings. He gets up from the
table, leaving his metal spoon in the bowl of hot soup. When he comes back a
few minutes later, the spoon is hot.
This is an example of ______________________
. I know this becaus
Answer:
23
Explanation:
Nice edge 40r0
someone pls help w this
Answer:
B.
Explanation:
Which of the following are shown in karyotypes?
a
sex chromosomes
b
homologous chromosomes
c
autosomes
d
all of the above
Answer:
Karyotypes describe the chromosome count of an organism and what these chromosomes look like under a light microscope. Attention is paid to their length, the position of the centromeres, banding pattern, any differences between the sex chromosomes, and any other physical characteristics.
Explanation:
As this karyotype displays, a diploid human cell contains 22 pairs of homologous chromosomes and 2 sex chromosomes. ... The maternal and paternal chromosomes in a homologous pair have the same genes at the same locus, but possibly different alleles.
In a separate location, take notes from the sources you've identified. The notes will provide details for your presentation
While taking notes, you may want to use these reading strategies C. Write down one or two pieces of information per
topic that you intend to use in your presentation.
Topic
Chemical reactions of fossil fuels
Difference between biomass and fossil fuels
Comparing biomass with other renewable
energy sources
Making energy choices locally
Answer:
CH4 + 2O2 -----> CO2 + 2H2O.
Explanation:
CH4 + 2O2 -----> CO2 + 2H2O is the chemical reaction of burning of fossil fuels. The main difference between biomass and fossil fuels is that biomass is biological material which can be derived from living whereas Fossil fuel such as coal, oil and gas are derived from biological material. Biomass is renewable because a new crop can be grown after each harvest, and biomass is a low carbon fuel. Biomass is renewable just like other renewable energy sources because both can be used again and again. The energy choices locally occurs according to the availability of energy resources in that locality.
If the DNA code for the amino acid alanine is CGA, the tRNA anticodon for alanine is ?
1.)AGC
2.)CGA
3.)CGT
4.)GCU
Answer:
2
Explanation:
