This type of fossil forms from a mold. Small particles of mud, sand, and/or
minerals becomes packed into the open space of the mold in the shape of a
turtle shell and hardens. The result is a fossil that has the same exact shape
as the original turtle shell.
Answers
Related Questions
Approximately how large of a container would you need to hold 1 mole of the e. coli chromosome?
Answers
To hold 1 mole of the E. coli chromosome, you would need a container with a volume of approximately 1.1 x 10^7 cubic micrometers.
The E. coli chromosome is a circular DNA molecule that is approximately 4.6 million base pairs long. Each base pair has a length of about 0.34 nanometers. To calculate the volume of the chromosome, we can multiply the length of the chromosome by the cross-sectional area. The cross-sectional area can be approximated as a circle with a radius of half the length of the chromosome.
Therefore, the volume of the chromosome is approximately (4.6 x 10^6) x (0.34 x 10^-9)^2 x π x (0.5 x 4.6 x 10^6) cubic nanometers. Converting this volume to cubic micrometers, we get approximately 1.1 x 10^7 cubic micrometers. So, a container with a volume of approximately 1.1 x 10^7 cubic micrometers would be needed to hold 1 mole of the E. coli chromosome.
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explain the reign of terror in brief
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Answer:
The Reign of Terror or simply The Terror was a period of about 11 months during the French Revolution. During this time, French people who did not support the revolution were executed at the guillotine. The Reign of Terror was started on 5 September, 1793. ... The Terror took the lives of between 18,500 to 40,000 people.
Look up at the night sky and just wonder. Then tell me what you wondered about.
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I wonder what sort of stuff happens up there that nobody is aware of. All the different kinds of possibilities. And if there is life, then what would they be doing and how are their ways of life?
what is photosynthensis
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Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Explanation:
Answer:
Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds
Explanation:
explain how studying these processes can provide insights into evolutionary relationships
Answers
Studying processes such as DNA sequencing, comparative anatomy, and embryonic development can provide insights into evolutionary relationships by identifying similarities and differences between species. These similarities and differences can be used to construct phylogenetic trees, which show the evolutionary relationships between different groups of organisms.
Comparative anatomy can also provide insights into evolutionary relationships. By comparing the physical structures of different organisms, scientists can identify similarities and differences that suggest a common ancestor. For example, the presence of similar bone structures in the limbs of different mammals suggests that they share a common ancestor.Embryonic development can also reveal evolutionary relationships. By studying the development of embryos from different species, scientists can identify similarities and differences that suggest a common ancestor. For example, the early development of the vertebrate embryo is similar in all vertebrates, suggesting that they share a common ancestor.Overall, studying these processes can provide a wealth of information about the evolutionary relationships between different species, helping us to better understand the history of life on Earth.
recorded on phylogenetic trees. If two or more species are recorded above the same split in a phylogenetic tree, or node, then they are related to each other, however distantly.
Which of the following is the source for terrigenous (lithogenous) ocean sediment?
A. Coral reefs
B. Volcanoes
C. Meteors
D. Dissolved chemicals in seawater
Answers
Answer:
B. Volcanoes
Explanation:
What is the source of terrigenous sediments?
Sources of terrigenous sediments include volcanoes, weathering of rocks, wind-blown dust, grinding by glaciers, and sediment carried by rivers or icebergs. Terrigenous sediments are responsible for a significant amount of the salt in today's oceans.
what happens if the cell membrane does not pinch inward during telophase?
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Answer:
It doesn’t pinch in for a plant cell because a plant cell has a cell wall. It grows a cell plate
I’m animals cells it should pinch in, but if it doesn’t, the cell can’t divide and you just end up with one cell containing 2 nuclei
Imagine that you are in your late 30s or early 40s and decide that you want a child. You realize that you're at greater risk of having a child with Down's Syndrome. If you find out that this child has this condition, do you think it's appropriate to have an abortion? Why or why not?
Answers
The decision to have an abortion in the case of a prenatal diagnosis of Down's Syndrome is a deeply personal and complex choice, so I recommend you choose based on your beliefs of pro choice or pro life. Various factors can influence one's decision, such as personal beliefs, values, and circumstances.
Some people may choose to have an abortion because they feel they cannot provide the necessary care, resources, or emotional support that a child with Down's Syndrome may require. They may also be concerned about the long-term well-being of the child, as individuals with Down's Syndrome can face a variety of health issues and developmental challenges.
Others may choose to continue the pregnancy, believing that every life has inherent value and that individuals with Down's Syndrome can lead fulfilling lives with appropriate support and resources. These individuals may also draw on their personal, religious, or philosophical beliefs to inform their decision.
Why woman's have big hips? what are the advantages & disadvantages of having big hips?
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Answer:
Women have wide hips or big hips in order to be prepared for the childbirth and permitting pregnancy. The size of the hips of the women starts to wide during puberty as hips bone widens due to the estrogen that leads to increase in size of pelvis.
Advantages of big hips in women:
Besides the sexual attraction widen or big hips are the essential for the physical support and helps in conceiving pregnancy and permitting childbirth. It is also helps in advantage of store fat.
There are not enough significant disadvantages of wide hips other than physical and sexual challenges.
If one electron in an atom is excited but does not have enough energy to escape, the energy of the excited electron must have one of a set of quantized values.a. Trueb. False
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Yes, that is correct. The energy levels of an electron in an atom are quantized, meaning that they can only have specific, discrete values, rather than continuous values.
When an electron is excited, it moves to a higher energy level, but if it does not have enough energy to escape the atom entirely, it can only occupy specific energy levels within the atom, which are determined by the quantum mechanics of the atom.
The energy levels are quantized due to the wave-particle duality of electrons, and the quantization of energy levels is a key aspect of the atomic model.
An electron is a subatomic particle with a negative charge. It is one of the basic building blocks of matter and is found in all atoms.
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plants use various hormones and enzymes to respond to changes in day length (photoperiod) and to trigger events such as dormancy and flowering. how will these molecules respond in plants living in locations with shorter daylight hours? (3 points) they will alter the amount of energy available to the plant. they will respond to changes in air temperature. they will reset the plant biological clock. they will modify based on soil composition changes.
Answers
Plants use various hormones and enzymes to respond to changes in day length (photoperiod) and to trigger events such as dormancy and flowering. These molecules respond in plants living in locations with shorter daylight hours by the cyanobacterial segments.
Cyanobacteria are microscopic, photosynthetic organisms that are classified as bacteria. They were once known as blue-green algae. Because of how frequently thick growths turn the water green, blue-green, or brownish-green, they were previously referred to as blue-green algae.
In contrast to photoperiodism, which is the physiological response triggered by the duration of day or night and how it influences the behavior and growth of these plants and animals, photoperiod refers to the daily hours of light and darkness that every specific living creature receives.
Each subspecies in botany has a unique photoperiod, however plants can be divided into three categories: day-neutral plants, long-day plants, and short-day plants. With the exception of Cannabis Ruderalis autoflowering types, cannabis is a short-day plant, which means that it requires lengthy nights with more than 12 hours of uninterrupted darkness to initiate flowering.
The biological activities of organisms are influenced by both the amount of light and the daily cycle of light and darkness in the world of plants.
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Scientists believe the smaller prokaryote in this example evolved into which organelle? think about it! hint: atp and "heterotrophic" 1.golgi bodies 2.mitochondria 3.nucleus 4.chloroplasts
Answers
The smaller prokaryote evolved into the organelle called mitochondria.
The cell is the basic unit of life. The function of a cell is achieved with the help of organelles present inside it.
The organelles present in the cell are the endoplasmic reticulum, Golgi bodies, ribosomes, chloroplasts, mitochondria, etc.
There are only two organelles in the cell which have their DNA, ribosomes, and protein synthesizing machinery and they can also divide by binary fission. These organelles are chloroplasts and mitochondria.
They are known as bacterial endosymbionts because it is believed by scientists that millions of years ago there were prokaryotic cells that entered the eukaryotic cells, started living inside the cell, and transformed into the mitochondria and chloroplast.
The reason for the scientists believing in this theory is the similarity between these organelles and the present-day bacteria.
These similarities have already been mentioned earlier like having their DNA, dividing by binary fission, etc.
Thus, the smaller prokaryote evolved into the organelle called mitochondria.
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3. List one advantage and disadvantage of a monocot root system.
Answers
A disadvantage is that this type of root is not favourable to the water scarce area or drought. So such plants live in the areas where water is easily available.
Which of the following would be classified as a renewable resource?
O A barrel of oil that would take 8 million years to form.
A large piece of coal that would take 4 million years to form.
O Solar rays from the Sun that take 8 minutes to reach the Earth.
O Methane gas from the ocean floor that takes 7 thousand years to outgas.
Answers
Both a plant and a fungus are composed of cells. According to the cell theory, the cells of
A a fungus can take in nutrients but are unable to produce new cells.
B
both organisms are able take in nutrients, and both can produce new cells.
C
a plant can produce new cells but are unable to take in nutrients,
D
both organisms are able to take in nutrients, but only plants can produce new cells.
Answers
Answer:
A
Explanation:
New cells can only come from already existing cells, therefore neither plants nor fungi can create new cells
According to the cell theory, the cells of both plant and fungal organisms are able take in nutrients, and both can produce new cells. Thus option B is correct.
What are the difference between plant cell and fungal cell ?Plants are autotrophic eukaryotic organism with different parts like root, stem, leaves etc. Fungi are the heterotrophic eukaryotic organism with undifferentiated body.
plant cell have cell wall made up of cellulose while fungal cell wall are septate or aseptate composed up chitin.
Plant cell are uninucleate but fungal cell are both uninucleate or multinucleated.
Chloroplast present in plant cell but absent in fungal cell.
Plant cell membrane have phytosterol where as fungal cell membrane have ergosterol.
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Nitrogen is the most common element in the air. Why do bacteria play a role in the nitrogen cycle?
Answers
Explanation:
Bacteria play a role in the nitrogen cycle because:The bacteria’s helps in breaking down the organic materials which has nitrogen in it, and helps in giving the nitrogen back to the cycle. Bacteria helps in breaking down of the leaves and then it diffuses the nitrogen to the soil. Prokaryotes also plays an important role in the nitrogen cycle. The nitrogen fixing bacteria present in the root zone of plants basically in the soil, helps in conversion of the nitrogen into ammonia. Then the nitrifying bacteria converts the ammonia to the nitrites or can say nitrates.
Answer:
sorry I didn't know hahaha
Mothers may be encouraged to breastfeed their newborn babies. The first milk that a mother
secretes is called colostrum and contains antibodies.
(i) Name the cells that produce antibodies.
Answers
Answer:
Lymphocytes
Explanation:
Mary is conducting an
experiment of the effect of
heat on crystals. Identify what
the independent (testing)
variable is.
Answers
the amount of heat you use will determine its effect of the crystal. therefore the heat is the independent and the crystal is the dependent
1. Which of the following does NOT describe a use of fossils?
O Gives an example of what past animals may have looked like.
O Determine features of the climate in which these animals lived.
.
O Provide evidence of the activity of animals at the time.
O Determine the sound that animals made during their lives.
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D.) Determine the sound that animals made during their lives.
Which of the following groups would be placed nearest the fungi in an evolutionary tree based on DNA sequences? a) plants b) bacteria c) animals d) archaea e) protists
Which of the following groups would be placed nearest the fungi in an evolutionary tree based on DNA sequences?
a) plants
b) bacteria
c) animals
d) archaea
e) protists
Answers
The group that would be placed nearest the fungi in an evolutionary tree based on DNA sequences is protists.
Cells of eukaryotic organisms such as fungi and protists contain a nucleus and other membrane-bound organelles. According to DNA sequence research, plants, unlike other organisms including bacteria, mammals and archaea, fungi and protists, share a close evolutionary link. Despite the fact that each of these groups has its own distinct evolutionary history, fungi and protists share a more distant common ancestor based on genetic similarities.
Therefore, the correct option is E.
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How do you think Earth’s large temperature gradient affects the speed of its convection currents? How would this speed change if Earth’s core were cooler?
Answers
The large temperature gradient within Earth's interior, particularly between the hot core and the cooler outer layers, has a significant impact on the speed of convection currents in the mantle.
Convection currents are driven by the heat transfer from the hotter regions to the cooler regions, causing the material to become less dense and rise, while the cooler material sinks.
If Earth's core were cooler it would likely result in a decrease in the temperature gradient between the core and the mantle.
This reduced temperature difference would lead to a weaker driving force for convection, resulting in slower convection currents.
The speed of the convection currents is directly proportional to the temperature difference, so a cooler core would generally result in slower movement of mantle material.
It's important to note that the dynamics of Earth's mantle are complex, and multiple factors influence convection, including the viscosity of the mantle material, the presence of compositional variations, and other heat sources like radioactive decay.
Changes in any of these factors could also influence the speed of convection currents.
A cooler core would likely lead to a decrease in the temperature gradient and subsequently slower convection currents in the mantle, although the specific effects would depend on the overall conditions and dynamics of Earth's interior.
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Explain why every cell that is produced from the genetically modified bacterium
will be able to produce insulin.
Answers
Answer:
Recombinant DNA is technology scientists developed that made it possible to insert a human gene into the genetic material of a common bacterium. This “recombinant” micro-organism could now produce the protein encoded by the human gene. Scientists build the human insulin gene in the laboratory. Then they remove a loop of bacterial DNA known as a plasmid and insert the human insulin gene into the plasmid. Researchers return the plasmid to the bacteria and put the “recombinant” bacteria in large fermentation tanks. There, the recombinant bacteria use the gene to begin producing human insulin. Scientists harvest the insulin from the bacteria and purify the substance for use as a medicine for people.
Explanation:
a comprehensive, open-source dataset of lower limb biomechanics in multiple conditions of stairs, ramps, and level-ground ambulation and transitions.
Answers
A comprehensive, open-source dataset of lower limb biomechanics in multiple conditions of stairs, ramps, and level-ground ambulation and transitions is available.
Researchers have compiled an extensive dataset encompassing lower limb biomechanics in various scenarios, including stairs, ramps, level-ground ambulation, and transitions. This dataset serves as a valuable resource for studying and understanding human movement and biomechanics in different locomotion conditions.
By capturing and analyzing data related to lower limb movements during activities such as ascending and descending stairs, traversing ramps, walking on level ground, and transitioning between these conditions, researchers and practitioners can gain insights into the mechanics of human locomotion.
This open-source dataset offers a wealth of information that can aid in the development of rehabilitation strategies, assistive device design, and the advancement of biomechanical research. Its availability encourages collaboration, innovation, and the exploration of novel approaches to improving human mobility and functional capabilities.
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Does the fossil of Archaeopteryx support Darwin's idea? Explain your answer.
(look at picture and read)
Answers
Answer:
yes
Explanation:
An analysis of fossil traits indicates that Archaeopteryx is not a bird at all. ... Archaeopteryx seemed to confirm Darwin's theories and has since become a key piece of evidence for the origin of birds, the transitional fossils debate, and confirmation of evolution.
a hypothetical symport facilitates the transfer of cl- and k into the cell. given that the cell membrane potential is -0.055 v (neg charge on inside), the temperature is 300k, and the concentrations of the cl- inside the cell is 10 mm and outside is 100 mm and the concentration of k inside is 110 mm and outside the cell is 4 mm, what is the energy associated with this movement?
Answers
Additionally, K+ is a positively charged ion with a concentration of 120 mM inside the cell, 4 mM outside the cell, and an equilibrium potential of -90 mV. This means that K+ will be in electrochemical equilibrium when the cell is 90 mV negative of the extracellular environment.
What happens if the K+ content in extracellular space rises?It is widely known that increased extracellular potassium ion concentrations ([K+]o), which frequently accompany conditions like ischemia and hyperkalemia in the heart, alter the resting transmembrane potential and the excitability of cardiac tissue.
Increased extracellular potassium depolarizes neurons because the resting neuronal membrane is extremely permeable to K+ and the membrane potential is sensitive to variations in the extracellular potassium concentration.
The duration of Purkinje and ventricular action potentials is lengthened when extracellular K concentration is reduced below approximately 3.0 mM, and diastolic depolarization in the Purkinje fiber is enhanced (9,10,12,13).
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Below are two sequences of a segment of DNA.
Normal sequence TTA AAA GGA
Mutated sequence CTT AAA AGG A
Which type of mutation has occurred?
Answers
Help (will give crown for answer)
Answers
Answer:genes
Explanation:
is meiosis genetically identical?
Answers
Answer: No I read it on briticanna.com
Explanation:
A fox is a type of mammal that is related to dogs. How does a fox most likely respond to hot air temperatures in a way that ectothermic animals cannot?
by panting, which is in response to an internal stimulus
by panting, which is in response to an external stimulus
Answers
Answer:
number 2 my guy
Explanation:
Answer:
Its B
Explanation:
I took a test
As per the United Nations, when will the world’s population reach 9 billion people?
A.
2025
B.
2050
C.
2020
D.
2055
Answers
Answer:
I think it's (a) 2025
Answer:
The answer is B.) 2050
Explanation: