Answer:
Origin of whales
Natural selection
Modern understanding
Explanation:
Origin of whales - In the first edition of "On the Origin of Species" in 1859, Charles Darwin speculated about how natural selection could cause a land mammal to turn into a whale.
Natural selection - To understand the origin of whales, it's necessary to have a basic understanding of how natural selection works. Natural selection can change a species in small ways, causing a population to change color or size over the course of several generations. This is called "micro-evolution."
Modern understanding - Darwin didn't know anything about genetics, Pobiner said. "He observed the pattern of evolution, but he didn't really know about the mechanism." That came later, with the discovery of how genes encode different biological or behavioral traits, and how genes are passed down from parents to offspring.
Answer:
observation of fossils,finches on different islands and different types of beaks,and observation of different species with varying traits
Explanation:
i took the test and i got an 100 :) plus, search up darwin and look at the methods he used.
During photosynthesis,
is used to break water down into oxygen and hydrogen.
oxygen
glucose
sunlight
carbon dioxide
Answer:
The answer is sunlight.
Explanation:
Sunlight is captured from the plants leaves and that energy is used to break down water into hydrogen and oxygen.
Answer:
The answer is Sunlight!!
Explanation:
why is it necessary to measure the temperature in the water bath
Measuring the temperature in a water bath is vital for controlling the heat transferred during processes like calorimetry, maintaining thermal equilibrium, and absorbing heat efficiently due to water's high specific heat. Different thermometers may also yield slightly different results, further underscoring the importance of temperature measurement in obtaining accurate results.
Explanation:It is necessary to measure the temperature in a water bath in order to monitor and control the amount of heat transferred in different processes, such as in calorimetry. Calorimetry is a technique used to measure the heat involved in chemical and physical processes. Heat is exchanged with a calibrated object, known as the calorimeter, and the temperature change measured by the calorimeter is utilized to derive the amount of heat transferred by the process under study.
Meticulously measuring the temperature of the water bath aids in maintaining thermal equilibrium and ensures that the correct amount of heat is being absorbed by the solution. Moreover, because the specific heat of water is significantly greater than that of many other substances, it can absorb a large amount of heat without a large change in temperature, making it an ideal medium for temperature control.
Additionally, different thermometers may give somewhat different results for other temperatures, hence adding to the importance of temperature measurement for accurate results.
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01:02:57
Your teacher is describing a plant that bears seeds and flowers, has five flower petals, and has seeds that are enclosed by
fruits. What kind of plant is he describing?
gymnosperm
o angiosperm
obryophyte
monocot
Answer: angiosperm
Explanation: NOT: monocot
angiosperm
Answer:
angiosperm
Explanation:
just took the test on edge 2021
Which of these are associated with the solar wind? Check all that apply.
o produces tides
disrupts communication systems
o composed of charged particles
travels at about 400 km/s
explains changes in the weather
Answer:
Disrupts communication systems
Composed of charged particles
Travels at about 400 km/s
Answer:
B. Disrupts communication systems
C. Composed of charged particles
D. Travels at about 400 km/s
Explanation:
I took the Assignment on ed 2020
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PLZZ HELP!!!
The diagram below shows four processes, A, B, C, and D, by which carbon circulates between the atmosphere, plants, and animals.
Which processes represent respiration?
Process A and Process C
Process B and Process D
Process A and Process D
Process B and Process C
Answer:
the correct answer is D.
Explanation:
Answer:
process a and c
Explanation:
How does fever indicate that your body's immune system is doing its job?
Answer:
Fever can support the immune system's attempt to gain advantage over infectious agents, such as viruses and bacteria, and it makes the body less favorable as a host for replicating viruses and bacteria, which are temperature sensitive.
Explanation:
Which of the following best describes an antibody?
1. Protane the targets and blocks and molecules
2. A molecule that causes the body to react negatively to certain substances
3. A tiny invader, like a virus,
bacterium or parasite
4. A molecule that provides energy to the body
Answer:
B. A molecule that causes the body to react negativly to certain substances.
Explanation:
Antibody (Ab) also known as immunoglobulin (Ig) is a large Y shaped protein produced by plasma cells. They are used by the body's immune system to neutralize pathogens like harmful bacteria and viruses.
They are secreted by the B cells of the adaptive immune system mostly by differentiated B cells called plasma cells. They are glycoproteins.
Aquatic biomes can be distinguished by chemical characteristics such as dissolved oxygen content and salinity and by physical characteristics such as water flow. Which five of the following statements about aquatic biomes are true?
Answer:
which five?
Explanation:
Is rainfall a density-dependent or density-independent limiting factor?
Question 3 options:
density-independent
density-dependent
Describe the relationship between DNA, Chromosomes, and Genes
Answer:
they are all located in the nucleus
Explanation:
Answer: DNA carries instructions for making the proteins a cell needs.
DNA molecules are found in chromosomes.
Genes are segments of DNA that contain instructions that code for proteins.
Explanation:
Just did it on edge 2020 i hope this helps you.
A mitosis inhibitor is a medication that is designed to prevent mitosis in certain cells. How could these be helpful in the treatment of tumors?
A.
It would prevent carcinogens from entering the cell.
B.
It would prevent tumor cells from reproducing.
C.
It would force the tumors to enter telophase.
D.
It would force the cells into binary fission.
Mitosis inhibitors can be helpful in the treatment of tumors by preventing tumor cells from reproducing (option b).
Mitosis inhibitors are medications specifically designed to inhibit or prevent the process of mitosis, which is the division of cells.
Tumors are abnormal growths of cells that divide and reproduce at an uncontrolled rate.
By using mitosis inhibitors, these medications can effectively disrupt the normal cell division process in tumor cells.
Mitosis inhibitors work by interfering with the microtubules, which are responsible for pulling apart the duplicated chromosomes during mitosis.
By disrupting the microtubules, mitosis inhibitors prevent the separation of chromosomes and the subsequent division of the cell.
This interruption in the cell division process effectively halts the growth and proliferation of tumor cells.
Without the ability to divide and reproduce, the tumor cells cannot continue to grow and spread.
Additionally, mitosis inhibitors may induce apoptosis, which is programmed cell death, in tumor cells.
By preventing tumor cells from reproducing and inducing cell death, mitosis inhibitors can help to shrink tumors and control their growth.
It is important to note that mitosis inhibitors are typically used in combination with other treatments such as chemotherapy or radiation therapy to provide a comprehensive approach to cancer treatment.
In summary, mitosis inhibitors can be helpful in the treatment of tumors by preventing tumor cells from reproducing, thereby halting their growth and potentially inducing cell death.
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Final answer:
Mitosis inhibitors like vincristine and Taxol are helpful in treating tumors because they prevent tumor cells from reproducing by disrupting the normal functioning of microtubules during cell division.
Explanation:
A mitosis inhibitor such as vincristine or Taxol can be helpful in the treatment of tumors because it prevents tumor cells from reproducing. Medications like these disrupt mitosis by binding to tubulin, which is the subunit of microtubules, thereby interfering with microtubule assembly and disassembly during cell division. For example, vincristine stops cellular division by halting cells in metaphase, while Taxol prevents the depolymerization of the spindle fibers, thus blocking the completion of mitosis.
You are exploring the jungle and find a new species of plant. Some of the plants have red flowers and some have yellow flowers. You cross a red flowering plant with a yellow flowering plant and all the offspring have orange flowers. You might assume that the alleles for flower color in this plant show ____________________.
Answer:
You are exploring the jungle and find a new species of plant. Some of the plants have red flowers and some have yellow flowers. You cross a red flowering plant with a yellow flowering plant and all the offspring have orange flowers. You might assume that the alleles for flower color in this plant show
RR x YY= RY, RY, RY, and RY
It is expedient to know when offspring reflects different phenotypic features different from the parents, it might actually be mutation of gene caused such
Explanation:
The alleles for flower color in the new plant species described show incomplete dominance, resulting in an intermediate color (orange) in the offspring when a red flowering plant is crossed with a yellow flowering plant.
Explanation:Based on the provided scenario, where crossing a red flowering plant with a yellow flowering plant results in offspring with orange flowers, you might assume that the alleles for flower color in this plant show incomplete dominance. Incomplete dominance is where the phenotype of the heterozygotes is an intermediate phenotype of the two homozygote parents. In the case described, since the flowers of the offspring are neither purely red nor purely yellow but a mix of both (orange), this suggests that neither the red allele nor the yellow allele is completely dominant over the other.
For example, if we consider red to be R and yellow to be Y, when these alleles come together in the offspring, they produce the intermediate orange color, indicating that neither allele is completely dominant. This is similar to what is observed in snapdragons, where crossing a plant with red flowers (CRCR) with one with white flowers (CWCW) results in offspring with pink flowers (CRCW), illustrating incomplete dominance.
If DNA has the code ATGC, what is the complementary code in mRNA?
Answer:
The complementary code for mRNA would be UACG.
Explanation:
DNA pairing has the following pairs: A-T and C-G
RNA pairing has the following pairs: A-U and C-G.
In this case, we would use the RNA pairing rules and find the complementary pairs for the DNA sequence. So the A will pair with U, T will pair with A, G will pair with C, and C will pair with G, giving the complementary mRNA code as UACG.
If DNA has the code ATGC, the complementary code in mRNA will be UACG.
WHAT IS TRANSCRIPTION:Transcription is the process whereby a mRNA molecule is synthesized from a DNA template. The information in the DNA is used to produce a mRNA molecule.
During transcription;
Adenine in DNA pairs with Uracil in mRNAThymine in DNA pairs with Adenine in mRNACytosine in DNA pairs with Guanine in mRNATherefore, If DNA has the code ATGC, the complementary code in mRNA will be UACG.
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Joseph and his wife Rita, owners of a home in Wexford, are a wealthy elderly couple. Joseph died recently of a sudden death when he was struck by lightning in his metal johnboat while fishing for red fish in the ocean. His body was never recovered. All of Joseph's children and grandchildren (who happened to be at the house at the time for a Father's Day celebration,) eagerly awaited the reading of Joseph's will, since they all knew that he would provide each of his blood relatives with an equal share of his wealth.
When the lawyer arrived to read the will, he noticed that a sum of money was missing from the safe in Joseph's office. The sum missing was equal to one person's portion of the estate value. In addition, a small amount of fresh blood was found on the outside of the safe door, presumably belonging to the thief whose hand most likely got caught on the sharp edges of the safe. As the lawyer was announcing this news, the maid rushed into the room and revealed that she had walked into Joseph's otlice to do her regular dusting and observed the thief quickly slipping out of the patio doors and running away down the beach. She had not seen the face or been able to identify the thief, since he or she wore a mask and a bulky overcoat. She did see, however, that the thief had attached ear lobes sticking out from behind the mask.
The police were called to the home. Upon a1Tival, they immediately ordered blood typing tests on all individuals in the house, and on the blood smear on the safe ( found to be type A-). They also noted the ear lobe type of everyone present.
Answer:
Danny is the thief, stealing all the money.
Explanation:
His son is not related to his family, he would not get any money from Joseph.
This question focuses on Biology, particularly human genetics. The mystery can be potentially solved by examining genetically determined traits of blood type and earlobe attachment and comparing them to all individuals at the scene.
Explanation:The subject of this question is Biology, specifically human genetics. It involves the analysis of traits in an individual, in this case, blood type and earlobe attachment, to solve a mystery. Blood types in humans are determined by genetics, specifically by the ABO and Rh blood group systems. A- blood type is relatively rare, narrowing down possible culprits. Earlobe attachment is also a genetically determined trait, although it's less clear cut than blood type. Nonetheless, it provides another clue. To find the thief, the police would compare blood type and earlobe type among all individuals present, aiming to find a match to both the blood on the safe and the observed earlobe type.
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10. Sexual reproduction is believed to have
evolved originally as a way for cells to
a. shuffle genetic material.
b. repair damaged DNA.
c. produce diploid individuals.
d. increase their population growth at a
maximum rate.
Answer:
A
Explanation:
Which layer of the alimentary canal is composed of simple squamous epithelium and areolar connective tissue?
Answer:
The serosa is the outermost layer of the intraperitoneal organs (it's also considered the visceral peritoneum). In most alimentary canal organs, its made up of areolar connective tissue covered with mesothelium, a single layer of squamous epithelial cells
Explanation:
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What do plants create that helps human beings survive?
oxygen
chlorophyll
carbon dioxide
Answer:
oxygen
Explanation:
Some cancers are caused by mutations that stop certain proteins from working. The inactivation of what kind of protein could lead to cancer? A. One that slows down the cell cycle. B. One that acts as a growth-reducing molecule. C. One that responds to growth-promoting molecules. D. One that speeds up the cell cycle.
Answer:
Some cancers are caused by mutations that stop certain proteins from working. The inactivation of what kind of protein could lead to cancer?
One that speeds up the cell cycle.
Explanation:
Which type of climate has the greatest amount of rock weathering caused by frost action? *
A) a wet climate in which temperatures alternate between below freezing and above freezing
B) a wet climate in which temperatures remain below freezing
C) a dry climate in which temperatures remain below freezing
D) a dry climate in which temperatures alternate between below freezing and above freezing
Answer:
This would be A hope this helps
Explanation:
The greatest amount of rock weathering caused by frost action occurs in a wet climate where temperatures alternate between below freezing and above freezing, because of the repeated freeze-thaw cycles that cause rocks to fracture.
Explanation:The type of climate with the greatest amount of rock weathering caused by frost action is A) a wet climate in which temperatures alternate between below freezing and above freezing. Frost action, or freeze-thaw weathering, is most effective in climates where the temperature variations allow water to repeatedly freeze and thaw. When water freezes in the cracks of rocks, it expands, exerting pressure and causing the rock to break apart. This process is less effective in climates where the temperature remains constantly below freezing, as the water remains frozen and does not undergo the expansion and contraction that causes the rock to fracture. Similarly, in dry climates (whether the temperature fluctuates or remains steady), there is insufficient moisture to contribute significantly to frost action.
Climate types such as subarctic climates and climates with pronounced seasonal temperature variations, often characterized by wet conditions and temperature cycles around the freezing point, result in considerable frost weathering. In contrast, dry or arid climates like deserts and polar climates with extreme colds provide less opportunity for such alternating freeze-thaw cycles and thus experience less frost action weathering.
why does carbon accumulate?
compare circulatory systems of the earthworm, frog, and squid. Include information on major organs and vessels, blood transfer process, how the systems are similar, and how the systems differ. Explain the differences in terms of structure and environment.
Answer:The frog and squid have similar structure while the earthworm differs
Explanation:
The earthworm has two ventricles while the latter have one ventricle each
Earthworm can't survive in water but the others can survive on land and in water
A student set up an experiment to show the effect of light color on photosynthesis in Elodea plants. She filled three test tubes with distilled water and placed a piece of Elodea in each of the tubes. She added a drop of phenol red, which turns red in a basic solution and yellow in an acidic solution. She blew in each tube to add carbon dioxide, which caused the distilled water to become more acidic so the phenol red turned yellow. She exposed Tube A to white light, Tube B to green light, and Tube C was wrapped in aluminum foil. Which of the tubes should she expect to turn red the fastest?
Answer:
Tube A will turn red the fastest.
Explanation:
Tube A will turn red fastest because Elodea plants will take up the white light and carry out photosynthesis.In tube B, the red colour will not be generated fastly because plants do not use green light. Usually, the green light is just reflected by the plants and it is not absorbed.
In tube C, no photosynthesis will be able to occur because due to the wrapped aluminium foil the plants could not receive any light for photosynthesis.
From the setup of the experiment to show the effect of light color on photosynthesis in Elodea plants, the solution in Tube A should turn red the fastest.
White light is essentially a mixture of all light colors. Hence, the Elodea plant in Tube A will absorb the most effective light color from the white light for its photosynthesis, utilizing the carbon dioxide in the tube's solution faster and making it turn red.
Green light is generally considered to be the least efficient of all light colors when it comes to photosynthesis. Hence, the rate of consumption of carbon dioxide from the tube with green (Tube B) light would be slow.
There will not be any photosynthesis in Tube C because there is no light for the process. the aluminum foil would have blocked any form of light that could get to the plant in the tube.
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These key features of schizo affective disorder distinguish it from schizophrenia:____________ a. various psychotic symptoms such as delusions and hallucinations b. persistent delusions that are not bizarre and not due to schizophrenia c. marked symptoms of both
Answer:
These key features of schizo affective disorder distinguish it from schizophrenia
various psychotic symptoms such as delusions and hallucinations
Explanation:
He was not satisfied with command of his native language merely, but gave attention to the study of foreign ones, and in particular was a master of Latin that he could speak it as well as his native tongue; but he could understand Greek better than he could speak it. He was so eloquent . . . The King spent much time and labour with him studying rhetoric, dialectics, and especially astronomy; he learned to reckon, and used to investigate the motions of the heavenly bodies most curiously.
This passage exemplifies Charlemagne's enthusiasm for
Answer:
Explanation:
Language is the answer trust me
Answer:
Language
Explanation:
i just took the test
An endospore may survive a drought because it is protected by a
Answer:
An endospore may survive a drought because it is protected by a THICK WALL
Explanation:
An endospore is a structure that is produced by some bacteria. This structure possesses characteristics such as:
a. Endospores have thick walls
b. They are very resistant and resilient to changes in temperature.
c. They are resistant as well to the action or activity of some chemicals.
d. Endospores serves as a means of protection for microorganisms such as Bacteria.
e. Endospores do not reproduce.
f. Endospores can be dormant or Inactive for a very long period of time.
Endospores may survive drought, activity of chemicals, extreme weather conditions, extreme temperatures due to the presence of thick walls in their structure.
Answer:
An endospore may survive a drought because it is protected by a specialized wall.
Explanation:
Endospores are non-reproductive, specialized cells, produced by bacterias to ensure survival under unfavorable conditions.
The endospore resistance can be explained by its particular wall structure. The most external proteinic layer that encloses the spore, supplies chemical and enzymatic resistance. Under this layer, there is a thicker layer composed of peptidoglycan, the cortex.
An appropriate cortex formation is necessary to avoid the spores´dehydration. This wall provides resistance against high temperatures.
The germ cellular wall is located under the cortex. This layer of peptidoglycan will become the bacterial cell wall after the endospore germinates.
The internal membrane, under the germen´s cellular wall, is an important permeability barrier against many chemical products potentially harmful.
all i need to ask is in the picture above
Answer:
number 1
Explanation: it is nature, when one feels threatened they want to make themselves as unapproachable as possible and for comfort, it also eases ones mind to know that if something happens to them, that they will not be alone
Through the use of the Polymerase Chain Reactions (PCR), small amounts of DNA
A. can pair with complementary sticky ends of cut segments.
B. can be amplified in volume to result in many copies of the segment.
C. can be cut in specific locations to isolate DNA sequences.
D. can be sorted and mapped.
Answer:
B. can be amplified in volume to result in many copies of the segment.
Explanation:
The purpose of PCR is to amplify small amounts of DNA so that you can get a sample large enough to analyze (or use for some other purpose), especially in a crime scene. A. is referring to restriction enzymes, enzymes that cut at specific locations along DNA strands to create "sticky ends." C. is referring to restriction enzymes once again. D. is simply irrelevant.
Through the use of the polymerase chain reactions (PCR), small amounts of DNA can be amplified in volume to result in many copies of the segment. Thus, the correct option is B.
What is Polymerase Chain Reaction?The polymerase chain reaction is a method widely which is used to rapidly make millions to billions of copies of a specific DNA sample, it also allows the scientists to take a very small sample of DNA and amplify it to a large enough amount to study in detailed study.
Polymerase chain reaction is fundamental to many procedures which are used in genetic testing and research work, including the analysis of ancient samples of DNA and identification of infectious agents as well. In this process, small amounts of DNA can be amplified in volume to result in many copies of the segment.
Therefore, the correct option is B.
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Which is an example of fungi reproduction? Question 24 options: A broken mycelium grows a new mushroom. During budding, a yeast cell forms spores. Lichen fungi produce egg and sperm cells. Mold produces seeds for new mold to grow.
Answer:
Which is an example of fungi reproduction?
During budding, a yeast cell forms spores
Explanation:
Fungi reproduce asexually through budding, fragmentation or producing spores
Final answer:
Fungi like yeast can reproduce asexually through budding, where a new cell forms from a bulge on the parent cell, eventually detaching after the nucleus divides.
Explanation:
Fungi have the ability to reproduce through various asexual methods, such as fragmentation, budding, and producing spores. In the process of budding, a characteristic of yeast, a bulge appears on the side of the yeast cell and the nucleus divides. The bud grows until it is ready to separate and form a new yeast cell. This asexual reproduction is a type of cytokinesis. It's important to note that fungi can also reproduce sexually; however, the example of yeast reproducing by budding is a case of asexual reproduction.
What are the four levels of organization in an organism?
Answer:
Cell, Tissue, Organ, Organ system
Explanation:
A group of cells makes up a tissue, A group of tissues makes up an organ and a group of organs makes up an organ system.
Rock is a type of Earth material. Most rock is made up of _______.
Answer:
Rock is a type of Earth material. Most rock is made up of minerals.
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