Answer:
Transcription factors
Explanation:
i just learnd that in biology class...
a) Which of the three types of organisms (multicellular, unicellular and colonial) would have
been the earliest form of life?
Answer:
unicellular...lemme know if am right
Which compliment pathway involves binding of compliment to the lipopolysaccharide layer of the bacterial cell wall?
a) Classic Pathway
b) Mannose-binding Lectin Pathway
c) Alternative Pathway
The complement pathway that involves binding of complement to the lipopolysaccharide layer of the bacterial cell wall is: Alternative Pathway. (Option c)
The alternative pathway is one of the three main complement activation pathways, alongside the classical pathway and the lectin pathway. It is called the alternative pathway because it can be initiated directly without the need for specific antibody-antigen complexes.
In the alternative pathway, complement proteins, such as C3, can spontaneously and continuously undergo low-level activation in the bloodstream. This activation occurs when complement proteins interact with certain molecules present on the surface of microorganisms, including the lipopolysaccharide (LPS) layer of bacterial cell walls.
The binding of complement proteins to the LPS layer triggers a cascade of enzymatic reactions, leading to the generation of complement fragments, such as C3b. These fragments can then bind to the bacterial surface, promoting opsonization (marking bacteria for phagocytosis), triggering inflammation, and ultimately leading to the destruction of the bacterial cells.
Therefore, the correct answer is c) Alternative Pathway.
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The theory of evolution through natural selection is considered a scientific theory because _____. See Concept 22.3 (Page 475) The theory of evolution through natural selection is considered a scientific theory because _____. See Concept 22.3 (Page 475) it is broad enough in scope to explain many observations it is supported by a massive body of evidence from many disciplines it is general enough to provide many testable hypotheses All of the above are correct. None of the above is correct.
Answer:
All of the above are correct:
it is broad enough in scope to explain many observations it is supported by a massive body of evidence from many disciplines it is general enough to provide many testable hypothesesExplanation:
The scientific theory is a conceptual framework used to explain facts or phenomena and to make predictions.
The theory is fundamental to science because it allows scientists to organize and understand observations.
The construction of a theory begins with a hypothesis. The scientist believes that a phenomenon occurs in a certain way, so he/she performs observations under the scientific method to prove that his/her hypothesis is valid or not valid. The systematization of the observations and the empirical data collected might derive from a scientific theory that explains the analyzed phenomenon.
A scientific theory is a knowledge that has been contrasted in several ways.
The theory of evolution has been tested in too many ways and by different disciplines, becoming one of the most strong theories. Research areas such as biology, genetics, paleontology, and geology, among others, have been tasting it and explaining many facts from it, which makes it broad enough to base on it any explanation of life.
The behavior of an organism is influenced by both internal and external factors. How might a bear be influenced by external factors in its environment? A. A decrease in the number of fish causes bears to start consuming more plants. B. An increase in hunting causes bears to stay in covered areas and avoid humans. C. A decrease in temperature causes bears to look for food during the day instead of at night. D. all of these
Answer:
D. all of these
Explanation:
I just got it right in study island (:
Answer:
it's D
Explanation:
Consider the following chemical reaction: Hb + O2 → HbO2 When this reaction is going from right to left, what process is occurring?
O a. oxygen unloading
O b. cellular respiration
O c. pulmonary ventilation
O d.oxygen loading
Answer: A, Oxygen Unloading
What are the characteristics of iodine ?
You are looking under the microscope and see a stringy multicellular organism. The eye piece is 10X, and the objective length is 40X. What is the magnification? a.50X b.400X
c. 500X d.40X
The correct answer is B. 400X. looking under the microscope and see a stringy multicellular organism. The eye piece is 10X, and the objective length is 40X.
Multicellularity refers to the organizational structure found in organisms composed of multiple cells. It is a fundamental characteristic of complex life forms, including plants, animals, and fungi. Multicellular organisms are comprised of specialized cells that work cooperatively to carry out various functions necessary for survival and growth. These cells communicate and coordinate their activities through complex signaling mechanisms, allowing for efficient distribution of resources and division of labor.
Multicellularity enables organisms to achieve greater complexity and adaptability, as specialized cells can perform specific tasks more effectively than individual cells. This organizational structure also provides advantages such as increased size, improved nutrient uptake, enhanced defense mechanisms, and the ability to develop and maintain complex tissue systems.
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Drag each tile to the correct box.
The specific heat of three substances in the image are given in the table.
stamped concrete - 0.75
grass-covered soil - 1.01
Water - 4.18
Place the areas in order based on how fast they’ll heat up on a sunny afternoon. Start with the fastest and end with the slowest.
PLEASE ANSWER QUICKLY I WILL GIVE BRAINLIEST!!
Answer:
Correct answer is A-C-B
Explanation:
Just took the test
The concrete has the lowest specific heat, so it requires very little heat to heat up, making it the fastest substance to heat up; the second is grass, and the third is water, which requires a high temperature to heat up, so A-C-B is the correct order.
What is the significance of the specific heat of the substances?Specific heat is explained as the amount of heat that is needed to raise the temperature by 1 degree, and here the water needs the highest temperature to raise the temperature by 1 degree as a result, even if the water gets a little bit more temperature, it will not be too hot right away.
Hence, the concrete has the lowest specific heat, so it requires very little heat to heat up, making it the fastest substance to heat up; the second is grass, and the third is water, which requires a high temperature to heat up, so A-C-B is the correct order.
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Where doed fertilisation take place?
Answer:
please give me brainlist and follow
Explanation:
fallopian tube
Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.
pls answer soon 8th grade science
Answer: 1. Is true 2. is false 3. Is true 4 is true 5. Is false 6. Is true 7. Is false 8. Is true 9. Is true 10 is false 11. Is false
I couldn’t answer so I just commented the answers to part 1
Part b. 12. B, 13. E, 14. A, 15. D, 16. C.
now I did as a actua answer
Explanation:
XBXь х Хү
What is the probability that this couple will have a colorblind son?
Answer:
2
Explanation:
Can someone help me with this one??
"Construct an explanation based on evidence for how the principles impact the
process of natural selection"
Answer:
The principles are responsible for the natural selection of organisms.
Explanation:
The principles greatly impact the process of natural selection because these principles are responsible for the natural selection of organisms. If the organisms have all the principles of natural selection, it has more chances of survival as compared to other organisms due to the presence of the favourable characteristics. These favourable characteristics helps the organisms to increase in population because the environment is suitable for them or in other words the organisms can tolerate that environment better than other organisms. for example, polar bear survives in the polar regions because they have a thick skin full of hair that helps in the survival on the cold regions, it is an act of natural selection.
The apical and basal surfaces are the 2 sides of all connective tissues.
A. True
B. False
Explain how the interaction of the Sun, the atmosphere, and the oceans produce winds.
Answer:
The heating of the Earth's surface and atmosphere by the sun drives convection within the atmosphere and ocean. This convection produces winds and ocean currents. The greater the pressure differences between a low-pressure area and a high-pressure area, the stronger the winds.
Explanation:
The heating of the Earth’s surface and atmosphere by the sun drives convection within the atmosphere and ocean. This convection produces winds and ocean currents. The greater the pressure differences between a low-pressure area and a high-pressure area, the stronger the winds.
Produces and secretes bile. Alternates contraction and relaxation of smooth muscles along the length of the GI tract. Largest salivary gland anterior to each ear. Another term for chewing. Covers dentin and glues the teeth to the periodontal ligament. Secrete hydrochloric acid in the stomach. Vessels absorbing and transporting fatty acids and monoglycerides. Pancreatic juice enters this region of the small intestine. Has both endocrine and exocrine functions. Finger-like extensions in the epithelial cell membrane.
Answer:
The correct answer would be -
1. liver 2. peristasis 3. parotid 4. mastication 5. cemuntum 6. parietal cell 7. Lacteal 8. duodenum 9. Pancreas 10. microvilli
Explanation:
The liver is the gland or the organ that is responsible for the production of bile and secreted into the duodenum during digestion.
Peristalsis is the movement that helps in forwarding propulsion of food/bolus
The parotid is a gland that produces and secrets saliva for moistening the food and digesting carbohydrates.
Mastication is a process that helps in crushing and breaking the food into smaller pieces.
Cementum is a substance that covers the root of the teeth and glues the teeth to the periodontal ligament.
Parietal cells secrete hydrochloric acid to remove the pathogens and activating pepsinogen.
Lacteal vessels absorb fatty acids and transport them
Duodenum is the region where pancreatic juice and bile is secreted.
The pancreas is an organ and gland that acts as exocrine and endocrine gland
Microvilli are the projection look like fingers in the epithelial cell membrane.
Stage 2 (short term swim failure) occurs 3-30 minutes following immersion in cold water. What happens in Stage 2 if cold water immersion?
When cold water immersion occurs, in Stage 2 (short term swim failure) which takes place 3-30 minutes after immersion, the victim experiences the physiological changes such as hyperventilation,
which is rapid and deep breathing that exceeds the metabolic needs of the body, leading to carbon dioxide loss. It could lead to hypocapnia when there is an abnormally low level of carbon dioxide in the blood. Below are other physiological changes experienced during Stage 2 (short term swim failure):Lack of coordination Inability to carry out simple tasks such as swimming Muscle cramps Reduced core body temperature Cyanosis (the bluish discoloration of the skin and mucous membranes caused by inadequate oxygenation of the blood)
This results in the inability to swim or perform other tasks that involve the use of limbs. In more than 100 cases, the victim quickly loses consciousness and drowns.
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Stage 2 of short-term swim failure following immersion in cold water involves peripheral vasoconstriction, shivering, and cognitive impairment.
Explanation:In stage 2 of short-term swim failure following immersion in cold water, several physiological changes occur. One significant change is the constriction of blood vessels in the arms and legs, known as peripheral vasoconstriction. This occurs as a result of the body's attempt to redirect blood flow to vital organs in order to maintain core body temperature.
In addition, during stage 2, shivering may begin as a way to generate heat and increase body temperature. Shivering helps the body to maintain its thermoregulation.
Finally, cognitive impairment can occur during stage 2. This includes difficulties with concentration, decision-making, and coordination, which can impact a person's ability to swim and increase the risk of drowning.
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Water is a product of cellular respiration. True or False
Answer:
true
Explanation:
During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell. Carbon dioxide and water are created as byproducts. Water and carbon dioxide are released as byproducts.
Which moon phase is represented in the diagram below?*
new
first
full
waning crescent
Answer:waning cresent
Explanation:waning crescent
provide an example for learned behavior and for instinct.
Answer: Learned behaviors are modified by previous experiences; examples of simple learned behaviors include habituation and imprinting.
Examples of this include a dog shaking after it gets wet, a sea turtle seeking out the ocean after hatching, or a bird migrating before the winter season. In humans, many reflexes are examples of instinctive behaviors.
Explanation:
Answer:
Hello There!!
Explanation:
An example for instinctive behaviour is nest building in birds and for learned behaviour an example can be playing an instrument.
hope this helps,have a great day!!
~Pinky~
What would happen within a cell if it had a premature termination codon in the gene encoding the ER protein translocator?
A. There would be no transmembrane proteins found in any membranes in the cell B.Nonsense mediated decay (NMD) could interfere with translation of the mRNA encoding the ER protein translocator C. N-linked glycosylation on proteins usually translocated into the ER would not occur D. All of the above E B and C are correct
Nonsense-mediated decay (NMD) can easily interfere with the translation of the mRNA which is responsible for encoding the ER protein translocator. Therefore, option "B" is correct. The genetic code consists of three STOP codons or nonsense codons which are UGA, UAG, and UAA.
These codons are frequently referred to as termination codons or nonsense codons. They do not encode any amino acid. Nonsense codon at the end of the polypeptide chain during translation is responsible for the end. Inserting a premature terminal codon (PTC) into a quality exon can code for incorrect mRNA, for example, cytoplasmic occasion.
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Explain the mistake you see in image 1
Answer:
There is no image
Explanation:
Try and upload it
As soil particle size decreases, capillary action will
Answer:
Increases
Explanation:
The smaller is the size of the soil, the greater is the interspace distance between the two soil particles. As this distance increases, the water gets more space to travel through thereby increasing the capillary action. Hence, as the size of soil particle reduces, capillarity increases.
A person with O type blood will have all of the following characteristics
except
Their genotype will be ii
There are no antigens on their blood cells
They can donate their blood to a person with AB blood
They can receive type A blood
Answer:
I'm O+
Explanation:
AB and A blood
O+ is universal so we can donate to anyone but only receive A and B blood
question 88 91) how is natural selection related to sexual reproduction as opposed to asexual reproduction? a) sexual reproduction results in many new gene combinations, some of which will lead to differential reproduction. b) sexual reproduction results in the most appropriate and healthiest balance of two sexes in a population. c) sexual reproduction results in the greatest number of new mutations. d) sexual reproduction allows the greatest number of offspring to be produced.
Natural selection related to sexual reproduction as opposed to asexual reproduction: sexual reproduction results in many new gene combinations, some of which will lead to differential reproduction. The correct option is a.
How does sexual reproduction influence natural selection?The differentiating force of natural selection is influenced by sexual reproduction. Reproduction that is asexual produces offspring that are genetically identical to their parent. This means that all descendants inherit all of their parents' genetic material. In comparison to asexual reproduction, sexual reproduction produces offspring that contain a mixture of genetic material from both parents.
This makes each new individual genetically different from both its parents and other members of the population. This increases the possibility that some individuals would be better adapted to their environment than others. The offspring inherit a combination of genes from both parents, resulting in a greater variation in the population.
This variation may lead to the survival of some individuals with genetic adaptations that enable them to cope with changes in their environment, while others with unsuitable genetic adaptations would not be able to cope. In conclusion, natural selection is influenced by sexual reproduction because it results in many new gene combinations, some of which will lead to differential reproduction. The correct option is a.
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need help please!!!!!!!
Answer:
...
Explanation:
Which planets have interiors made of partially frozen water and ammonia?
Question 29 (2 points) Listen Recent, newer discoveries of oil resources tend to have which characteristics? They are deeper, farther, more expensive, and more dangerous to access and extract. They are cheaper, closer, cheaper, and safer to access and extract. They are in locations that would not be harmed if a spill were to occur. None of the above
Recent, newer discoveries of oil resources tend to have the characteristic of being cheaper, closer, cheaper, and safer to access and extract. These resources are discovered through the exploration and drilling of new oil fields.
Explorers are always searching for new and it is difficult to determine the exact location of a deposit until it has been discovered. Recent, newer discoveries of oil resources have been found to be less expensive and easier to extract than oil from older, established fields. This is due to advances in technology and the development of new drilling techniques.
In addition, newer oil fields tend to be closer to population centers, making it easier to transport the oil to refineries and processing plants. They are also often located in areas that are less environmentally sensitive, reducing the risk of spills and other environmental damage.
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Which of the following is an example of a private effort to help the environment? *
A. An individual donates money for a park.
B. A business recycles its waste.
C. A nonprofit group buys land for preservation.
D. all of the above
Answer:
The correct answer is - D. all of the above.
Explanation:
Any effort from a private sector made for the preserve or help for the betterment of the environment and ecology. Establishing and making a park will help in increasing plant diversity which increases the air quality of the ecosystem and atmosphere.
An individual donates money for the park. Recycling the waste of a private business is also hep in maintaining the environment. Preserving the land also helps the environment.
Pls help and thank me
A student remarks that it is a good thing that humans discovered how to use industrial processes to fix nitrogen because this ensures that the nitrogen cycle can remain intact if nitrogen-fixing bacteria ever go extinct. Evaluate the accuracy of this statement. A. The statement is accurate because humans are able to fix nitrogen on a large scale that rivals the rate of the process carried out by bacteria. B. The statement is inaccurate because the nitrogen cycle does not depend on nitrogen-fixing bacteria, and their loss would not cause a problem. C. The statement is inaccurate because the product of nitrogen fixation through industrial processes does not have the same biological properties as the product of nitrogen fixation by bacteria. D. The statement is inaccurate because humans would not be able to distribute the product of nitrogen fixation from industrial processes in the same way that bacteria are able to distribute it globally now.
Answer:
D. The statement is inaccurate because humans would not be able to distribute the product of nitrogen fixation from industrial processes in the same way that bacteria are able to distribute it globally now.
Explanation:
Nitrogen fixing bacteria has the responsibility in nature to trap and fix atmospheric nitrogen in ecosystems. They are very important components of the nitrogen cycle and play an important role in maintaining the balance of nutrients in nature.
If humans discover industrial processes to fix nitrogen, the process will be unsustainable in the long run if nitrogen-fixing bacteria ever go extinct because humans would not be able to distribute the product of nitrogen fixation from industrial processes in the same way that bacteria are able to distribute it globally now across several ecosystems all over the world.