How did darwin use the fossil record to support descent from common ancestors and natural selections?
Plant needles are PROBABLY initially the result of A) adaptations for survival that some plants developed due to high temperatures on Earth. B) somatic mutations that made some leaves thick and waxy, while other leaves did not change. C) neutral mutations to leaf tissue that would neither help nor harm the plants living in such a harsh environment. D) a beneficial mutation that increased survival of certain plants that reproduced and passed the mutated gene to offspring.
the correct answer is D
The movement of substances across a cell membrane from an area of lower concentration to an area of higher concentration, which requires cellular energy & a carrier protein is called:
The movement of substances across a cell membrane from an area of lower concentration to an area of higher concentration, which requires cellular energy & a carrier protein is called active trasport.
What is cell theory?Cell theory is a scientific theory that's help to learn how living organisms are made up of cells, that's they are the basic structure unit of all organisms, and that all cells from pre-existing cells.
Prokaryotic cells are single-celled microorganisms known to be earliest on earth. Eukaryotic cell have a nucleus enclosed within the nuclear membrane and form large and complex organism.
Difference between unicellular and multicellular.
The main difference between unicellular organisms and multicellular organisms is that unicellular organism is unspecialised it means all the body function depends upon only on the single cell and in multicellular organism there is specific cells for specific purposes.
Multicellular and unicellular organisms are perform almost all the life running activities and processes such as respiration, reproduction digestion, breathing, and metabolism.
In unicellular organism division of labour is at the organ level on the other hand in multicellular the division of labour at cellular, tissue, organs and organ system level. Unicellular organism has simple body organization and multicellular organism have complex body organism.
Therefore, movement of substances across a cell membrane from an area of lower concentration to an area of higher concentration, which requires cellular energy & a carrier protein is called active trasport.
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A caregiver asks the nurse what the caregiver can give a 9-year-old child for a headache. what is the nurse's best response?
The glial cell that helps to circulate cerebrospinal fluid is the
Please help me need it ASAP
(5.03 lc)the boxer crab, lybia tesselata, carries a small pair of anemones in its claws. when approached by a predator, it waves the anemones around, presenting the stinging tentacles and chasing away the predator. the anemones benefit by eating food particles from prey that the crab catches. what type of relationship is this?
Answer:
Mutualism
Explanation:
Mutualism is the symbiotic association between two organisms in which both the partners are benefited. In the given example, the boxer crab uses the stinging tentacles of anemone to protect itself from the predators. On the other hand, the anemone is benefited by feeding on the particles from the prey caught by crab. Since both crab and anemone are benefited, it is an example of mutualism.
The largest population that an environment can support is called its
Answer: Carrying capacity.
Explanation:
What is the Wernicke's area & does it affect your ability to speak?
Describe the short term and long term process of the carbon cycle
The short-term is of the carbon cycle is interactions between the terrestrial and marine components of the biosphere and the atmosphere. The long-term of the carbon cycle is the formation and destruction of fossil fuels and sediments containing organic carbon.
What is a carbon cycle?The carbon cycle is nature's method of recycling carbon atoms, which repeatedly go from the atmosphere into Earth's living things and back into it.
The majority of carbon is kept in rocks and sediments; the remainder is kept in the ocean, atmosphere, and living things. The carbon cycle is the regulation of carbon from one form to another.
Thus, the short and long terms of the carbon cycle are the formation of natural components by the means of the natural processes with the presence of carbon.
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Why do you think there are earthquakes in mid-America where there are no known fault lines?
Your patient is a 22-year-old female who has increased her daily dose of lithium without her physician's knowledge. she is complaining of generalized weakness, vomiting, and diarrhea. you notice that her speech is slurred. heart rate = 68 and irregular, respirations = 16, blood pressure = 104/70, sao
Please help! Of the skulls below, which one shows the most evidence of upright walking?
Human Evolution
A. Skull A
B. Skull B
C. Skull C
D. Skull D
The skull that shows the most evidence of upright walking is actually D :)
1. Antibiotics are effective at treating
A.) a common cold, but not genital warts
B.) a tapeworm infection, but not botulism
C.) strep throat, but not the flu
D.) athlete's foot, but not an ear infection
2. The sneezing, runny nose, and itchy eyes associated with allergies are cause when
A.) smooth muscles reduce the size of air passageways in the lungs
B.) the immune system attacks the body's own cells
C.) mast cells release histamines
D.) infected cells produce interferon,
An elderly client diagnosed with diarrhea is taking digoxin. which electrolyte imbalance should the nurse be alert to?
Which of the following statements explains how science impacts society?
A. Science creates new technology without creating any problems.
B. Science does not affect society as much as some people think.
C. Science creates new technology that benefits society, but it may also create problems.
D. Science does not help us understand the world.
Answer: C. Science creates new technology that benefits society, but it may also create problems.
Explanation:
Science is a discipline which gives the detailed explanation for the cause of natural events, natural phenomena, or natural processes through experimental evidences and supportive information.
The scientific knowledge can be useful for the development of new technology which can help the society in solving problems associated with the daily life. But can also create problem as with the advent of the technology is expected to adversely affect the natural environment. For example, the use of the fossil fuels to run the vehicle can ultimately affect the environment by causing air pollution due to the emission of the pollutants in the air.
Natural selection
A: eliminates favorable traits in a population
B: allows populations to change over time
C: forms new traits in a population
D: concentrates traits in a population
This is a type of reproduction where one organism divides into two and there is no exchange of genetic information.
This is a dna fingerprint exhibiting samples from a victim, two suspects, and the crime scene. which of these dna fragments is common to both the victim and suspect 1? question #9 this is a dna fingerprint exhibiting samples from a victim, two suspects, and the crime scene. which of these dna fragments is common to both the victim and suspect 1? question #9 a b c d e
The question shows the results of a gel electrophoresis, which shows DNA fragments of the victim and two suspects, suspect 1 and suspect 2. A comparison of the five DNA fragments of the victim, A to E, reveals that the victim and suspect 1 both have the DNA fragment b.
A
visual comparison of the gel electrophoresis results should reveal that Suspect
1 has a DNA fragment that matches victim DNA fragment B.The visuals can be seen in the attachment.
Without a visual reference, it's not definitive to say which DNA fragment is common between the victim and suspect 1. However, in DNA fingerprinting, common fragments are visible as aligned bands in the same position in both samples.
Explanation:The process of identifying the DNA fragments in a sample is known as DNA fingerprinting. Without an image or graphical representation of the DNA fragments from the question, it's impossible to definitively say which fragments are common between the victim and suspect 1. However, in a typical DNA fingerprinting procedure, common fragments would be represented as bands in the same position in both the victim's and suspect 1's DNA samples.
This procedure is based on the concept of gene loci where each individual has unique DNA sequences. The comparison, in this case, is done by looking at the bands' positioning in each sample. If multiple bands, or even a single significant band, aligns between the victim and suspect 1, there could be a link suggesting that suspect 1 might be related to the crime scene.
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Mendel performed a cross between individuals heterozygous for three different traits: green versus yellow seeds (green is dominant), red versus white flowers (red is dominant), and green versus yellow pods (green is dominant). what fraction of the offspring would have been expected to have green seeds, red flowers, and green pods?
The fraction of offspring expected to have green seeds, red flowers, and green pods would be 27/64.
Assuming that the seed shape, flower color, and pod color are represented by A, B, and C alleles respectively.
Since the parents involved in the cross are heterozygous for each trait, their genotypes would be AaBbCc each.
AaBbCc x AaBbCc
See the attached image for the Punnet's square analysis of the cross that results in the offspring with the phenotypic ratio.
The proportion of the offspring with parental phenotypes is 27/64.
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A plant makes its own proteins but an animal synthesizes the proteins it consumes as food.
a. True
b. False
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A large tract of land is purchased by a commercial agricultural company. The land is cleared of its native flora, and a single crop is planted instead. What is the effect of this action?
Clearing land for a single crop in commercial agriculture can result in the loss of biodiversity, changes in rainfall patterns, and increased vulnerability to pests and diseases.
Explanation:When a large tract of land is purchased by a commercial agricultural company and cleared of its native flora to plant a single crop, it has several effects. One of the main effects is the loss of biodiversity as native plants and animals are displaced. This type of agricultural practice can also lead to changes in rainfall patterns and frequency and contribute to deforestation. Additionally, relying on a single crop can make the land more vulnerable to pests and diseases.
Bacitracin blocks the transport of nag and nam across the cytoplasmic membrane to the cell wall. like other antimicrobials that block cell wall synthesis, this would result in weak cell walls and __________.
Bacitracin inhibits the movement of peptidoglycan precursors, therefore interfering with cell wall synthesis and leading to weak cell walls. This results in bacterial cells being more susceptible to osmotic lysis, causing them to rupture due to a water concentration imbalance.
Explanation:Bacitracin is an antibiotic that inhibits the movement of peptidoglycan precursors from the cytoplasm to the cell wall, interfering with cell wall synthesis in bacteria. Consequently, this results in the creation of weak cell walls and renders the bacterial cells more susceptible to osmotic lysis. This condition refers to the rupture or disintegration of the cell due to an imbalance in water concentration through the cell membrane. Osmotic lysis may occur in bacteria if too much water moves into the cell, causing it to burst. Essentially, bacitracin creates an environment in which it is difficult for bacteria to maintain their cellular structure, hence aiding in their elimination.
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In what way is crossing over important for sexual reproduction
What important events are in the timeline of the geological and human stories of stories of this geo scenario ?
which humans control breeding of other organisms to favor certain traits, it is reffered to as___. a) natural selection b) artificial selection c) human selection d) environmental selection
Cholesterol can be returned to the ________ and synthesized into ________. bile is stored in the gallbladder or goes through the bile duct to the small intestine and assists in the emulsification of fat from food. a option
a.stomach—acid b option
b.liver- bile c option
c.small intestine-energy d option
d.stomach—bile
Which of these is not typical of a condensing protostar?
Which term describes and enzyme?
A. Substrate
B. Reactant
C. Catalyst
D. Product