A phylogenetic tree is the representation of the evolutionary relationships among species. The fossil records are used as evidence to develop a phylogenetic tree. Thus, option A is correct.
What is a fossil record?A fossil record is a depiction of the organisms that shared common ancestors and depicts the change in the structural and functional unit of the organism over many years of time.
They are used to illustrate the phylogenetic tree to show the morphological, structural, chemical, anatomical, etc variations in species that shared ancestry.
Therefore, option A. fossil records are used to show the common ancestry at the nodes.
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Answer: A. the fossil record
Explanation:
What causes earthquakes?
How are earthquakes measured and how big can they get?
Explanation:
Earthquakes are caused by friction at the ends of tectonic plates. WHen they become stuck at their edges from this friction, stress builds up,, and eventually overcomes the friction, becoming an earthquake. Earthquakes are measured on the Richter scale. The largest earthquake ever documented was 9.5 in Chile on May 22nd, 1960.
The use of propaganda as a way of exerting influence over others is what type of structural power?
Answer:
i think is the soft power
Explain in your own words why there is uncertainty in science. What can scientists do to reduce uncertainty in science?
Scientists can reduce uncertainty by performing repeated hypothesis testing trough experiments or observations that exhibit the same predictive outcomes.
What is hypothesis testing?The expression 'hypothesis testing' makes reference to experimental and also observational methods used to test (either confirm or reject) a scientific hypothesis.
Hypothesis testing helps to reduce the level of uncertainty because the same results in different outcomes represent an excellent a measure of reliability by means of the scientific method.
In conclusion, scientists can reduce uncertainty by performing repeated hypothesis testing trough experiments or observations that exhibit the same predictive outcomes.
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please solve this for me
Carbohydrates and Fat - Energy-giving food
Proteins- Body-building food
Vitamin and minerals- Protective food
Dietary fiber- They help in easy digestion of food
Iodine deficiency- Causes the disease called goiter
Lack of Vitamin A- Causes loss of vision
What are Carbohydrates and fats?
Carbohydrates are the biomolecules that are present in our body and building blocks of several eating compounds(mainly sugars like starch, glycogen, etc.) These are the simplest biomolecules and are quick sources of energy.
Fat is a bit complex biomolecule that is present in our food in the form of oils and is also a component of our cell membrane.
What are vitamins and minerals?
These are the micronutrient that is required by our body for their normal functioning.
They are a kind of protective food for the proper functioning of our body parts.
What is Iodine deficiency?
Iodine deficiency occurs in our body due to a lack of vitamin D which causes goiter. To heal this deficiency doctor prescribes some vitamin d capsules and suggestion to take a sun bath.
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Describe the Coriolanus effect on the large scale movement of air in the atmosphere
The air move counterclockwise and anticlockwise due to Coriolanus effect.
Describe the Coriolanus effect?Due to Coriolanus effect, air move to rotate counterclockwise at the large-scale low-pressure systems and move clockwise at large-scale high-pressure systems in the Northern Hemisphere while on the other hand, the air rotate counterclockwise at the large-scale high-pressure systems and move clockwise at large-scale low-pressure systems in the Southern Hemisphere
So we can conclude that air move counterclockwise and anticlockwise due to Coriolanus effect.
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how is the process of photosynthesis taking place thru Calvin Cycle?
This is the ideal question! Thanks for asking!
Before we start, let's go through a mini-review.
Photosynthesis:
The complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll.
Calvin Cycle:
A series of biochemical reactions that take place in the stroma of chloroplast in photosynthetic organisms.
Now that we have gone through what these two terms are and their definitions, let's head onto the actual questions.
So the question asks, how is the process of photosynthesis taking place through Calvin Cycle?
In plants, carbon dioxide (CO2[tex]CO2[/tex]CO2C, O, start subscript, 2, end subscript) enters the interior of a leaf via pores called stomata and diffuses into the stroma of the chloroplast—the site of the Calvin cycle reactions, where sugar is synthesized. Because they are not primarily fueled by light, these reactions are often known as the "light-independent reactions."
Carbon atoms from CO2 [tex]CO2[/tex] CO2 C, O, start subscript, 2, and end subscript are fixed (incorporated into organic molecules) and utilized to create three-carbon sugars in the Calvin cycle. ATP and NADPH produced by the light reactions are used to power and support this activity. Calvin cycle reactions occur in the stroma, as opposed to light reactions, which occur in the thylakoid membrane (the inner space of chloroplasts).
That's about it! If you'd like, check out the attachment for a visual!
Thank you,
Eddie
Which of the following factors would you expect to affect the rate of photosynthesis? Choose all that apply. You will be deducted for incorrect answers.
Select one or more:
a.
Amount of solar energy available
b.
Carbon dioxide concentration
c.
Amount of oxygen available
d.
Water availability
Answer:
Carbon dioxide concentration
Explanation:
Even if there is plenty of light, a plant cannot photosynthesise if there is
insufficient carbon dioxide.
help look at the picture
The Steady State Theory state that the density of the universe was remaining constant.
Steady State Theory:In cosmology, a steady-state theory is a perspective that holds that the universe is constantly expanding while maintaining a constant average density. According to this theory, the matter is continuously created to form new stars and galaxies at the same rate that older ones fade away due to their expanding distance and accelerating recession. The average density and configuration of galaxies are the same as any location in a steady-state universe, which has no beginning or end in time.
British scientists Sir Hermann Bondi, Thomas Gold, and Sir Fred Hoyle first proposed the hypothesis in 1948. Hoyle expanded on it in order to address issues that had come up in relation to the alternative big-bang theory. According to the hypothesis, in order to maintain a constant average density of matter across time, the new matter must constantly be created, primarily as hydrogen. With nearly five times as much dark matter, the amount needed is small and not immediately observable: one solar mass of baryons per cubic megaparsec every year, or one hydrogen atom per cubic meter every billion years.
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8. Which of the following are true of cells? Select all that apply.
All cells are surrounded by a membrane.
Most cells have some type of genetic material.
All cells have a nucleus.
All cells have cytoplasm.
Cells can be categorized as prokaryotic or unicellular.
Assume N =normal pigment allele;n =Albinism allele (complete absence of brown pigment) if both the parents are heterozygous for albinism ,which allele/s would their gametes have?
The gametes will carry all types of alleles ie, NN, Nn and nn.
Melanin, the pigment that gives skin, hair, and eyes their colors, is affected by albinism. The condition is permanent, yet it does not deteriorate over time. Melanin levels in albinos are either very lower or absent altogether. Their eyesight and coloration may be impacted by this.Albinism follows Recessive autosomal inheritance This means that in order to be born with albinism, a kid must inherit two copies of the allele—one from each parent—from both parents. If both parents have the gene, their child has a 1 in 4 chance of having albinism and a 1 in 2 chance of having the gene.Two heterozygous parents will have gametes Nn and Nn
Nn X Nn (parents)
NN, Nn, Nn, nn (offspring)
Thus, The gametes will carry all types of alleles
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Be aware that this outcome supports Mendel's Law of Independent Assortment. The cross is therefore Cc Vv x Cc Vv. II. A quarter of all offspring for two heterozygous parents (Aa) should exhibit the albinism recessive trait.
When two heterozygotes are crossed, the expected genotype ratio is 1 (homozygous dominant): 2 (heterozygous): 1. (homozygous recessive). When a phenotypic ratio of 2:1 is seen, a deadly allele is presumably present.
There will often be 25% YY, 50% YG, and 25% GG offspring if both parent plants have the heterozygous (YG) genotype. These percentages are calculated using the fact that each of a Punnett square's four offspring boxes contains a percentage of 25%. (1 out of 4). In terms of phenotypes, only 25% of individuals will exhibit G. Every time a new child is born to parents with YG genotypes, these are the odds.
Punnett square demonstrates that the offspring probabilities are 25% YY, 50% YG, and 25% GG when both parents are heterozygous.
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The typing of human blood is determined by three alleles: A, B, and O. Alleles A and B are codominant to one another and O is recessive to both alleles, A and B.
AA/ AO – type A blood, AB – type AB blood, BB/ BO – type B blood, OO – type O blood.
A woman who is homozygous for type B blood marries a man who is heterozygous for type A.
What is the genotype ratio of their offspring?
What is the phenotype ratio of their offspring?
Name three methods of disrupting cells before fractionation
Extraction, homogenization, and centrifugation are the three processes in cell fractionation.
Cell fractionation is a method for dividing cellular components while yet maintaining each component's unique functionality. This technique was initially applied to show where distinct biochemical activities are located within cells. Subcellular fractionation is also used to help with illness detection and to offer an enhanced source of protein for further purification. To prevent osmotic damage, tissue is routinely homogenized in an isotonic buffer solution. Grinding, mincing, chopping, pressure changes, osmotic shock, freeze-thawing, and ultrasonic waves are a few of the mechanisms for homogenization. After that, the samples are maintained cool to avoid enzymatic deterioration. It is the development of a uniform mass of cells (cell homogenate or cell suspension).
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machenical methods(french press... ' ultra sound and bead mill
enzymatic method
chemical method(detergents and solvents)
Explanation:
Many Points!!!!!!!!!!!!!!!! What does this diagram represent?
The diagram presented represents hydrolysis of sucrose.
What is hydrolysis of sucrose?The hydrolysis of sucrose generates an equimolar mixture of fructose and glucose, commercially known as invert sugar.
Sucrose is a disaccharide with the formula C₁₂H₂₂O₁₁.
On hydrolysis, Sucrose yields the two monosaccharides, namely;
glucose (aldohexose) and fructose (ketohexose),However, on dehydration Sucrose produces a complex carbonaceous solid residue.
Thus, the diagram presented represents hydrolysis of sucrose.
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Select the correct answer from each drop-down menu.
L
The nervous system and the muscle system respond to stimuli to produce motion. The movements of
v muscles are mostly
voluntary. Involuntary movements occur in these muscles when the nerve impulse passes from a sensory neuron CO
motor neuron via
an interneuron in the
v
Reset
Next
The correct answer from the listed options is that the nervous system and the muscle system respond to stimuli to produce motion (option A).
What is nervous system?Nervous system is the organ system that coordinates the activities of muscles, monitors organs, constructs and processes data received from the senses and initiates actions.
On the other hand, the muscle is a contractile form of tissue which animals use to effect movement.
The nervous system controls the muscle, hence, it controls movement of limbs in higher organisms.
Therefore, the correct answer from the listed options is that the nervous system and the muscle system respond to stimuli to produce motion.
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Answer:
Explanation:skeletal
Spinal
list the development from secondary oocyte to birth
Jordan's grandmother uses the juice from squeezed lemons to remove stains from his shirt. He hypothesizes that the juice is the only part of the lemon that is effective at removing the stains, because it’s an acid. Which two steps would help Jordan determine whether his hypothesis is scientifically supported?
Answer:
Jordan's grandmother uses the juice from squeezed lemons to remove stains from his shirt. He hypothesizes that the juice is the only part of the lemon that is effective at removing the stains, because it’s an acid. Which two steps would help Jordan determine whether his hypothesis is scientifically supported? A:He should test the acidity of different parts of the lemon, including the juice, pulp, and skin. B:He should conduct an opinion poll of residents to see if they agree with his hypothesis C:He should make identical stains on T-shirts and see whether different parts of the lemon will remove the stain. D:He should find literature on housekeeping websites that support the use of lemon juice at removing stains. E:He should compare lemon juice with other acidic juices to see if they all remove stains.
give 5 characteristics of the soups include two appropriate garnish for each
Answer:
is there supposed to be a image attached?
Explanation:
what soups are they talking about
If you added 1 ml of an aqueous solution of NaCl at 0.4 mol/l to 9 ml of water, what would be the final concentration of NaCl in the solution?
Taking into account the definition of dilution, the final concentration of NaCl in the solution is 0.04 mol/L.
DilutionWhen it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.
Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.
In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where
Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volumeFinal concentrationIn this case, you know:
Ci= 0.4 mol/LVi= 1 mLCf= ?Vf= 1 mL of aqueous solution of NaCl + 9 mL of water= 10 mL solutionReplacing in the definition of dilution:
0.4 mol/L × 1 mL= Cf× 10 mL
Solving:
(0.4 mol/L × 1 mL)÷ 10 mL= Cf
0.04 mol/L= Vf
In summary, the final concentration of NaCl in the solution is 0.04 mol/L.
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Name each structure
Answer:
The brochuus
hope I helped.
Which of the following
places is likely to have low
biodiversity?
OA. Great barrier reef
B. Man-made pine tree plantation
OC. Indian Ocean
OD. Amazon rainforest
Man made pine tree plantation is likely to have low biodiversity. Thus option B is correct .
What is biodiversity?Biodiversity is all the different kinds of life living in a particular area like the variety of animals, plants, fungi and microorganisms like bacteria and virus that plays a major role in framing of natural world usually three levels of biodiversity are observed and these are genetic species, and ecosystem diversity.
Biodiversity is very important for the process that's support all life present on earth including human.
Therefore, man made pine tree plantation is likely to have low biodiversity. Thus option B is correct .
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what is the value of atmospheric pressure in see level
Answer:
about 14.7 pounds per square inch
Answer:
about 14.7 pounds per square inch
Explanation:
soil fertility diagnosis
Answer:
Diagnostic testing for nitrogen soil fertility can provide a very effective guide to nitrogen fertilizer management. Diagnostic N testing requires sampling of the subsoil, at least to the third foot depth. The soil test N index is the total of nitrate-nitrogen from the surface layer to the depth sampled
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HELP QUICK PLS!!!
Part A: Explain why ATP is important in biochemical reactions.
Part B: How is ATP similar to a rechargeable battery? Explain in terms of structure and function.
A vital source of power for biological functions is ATP. From molecules like glucose, energy is transported to the intermediate energy source ATP. A ubiquitous intermediary in metabolism, ATP serves as a store of potential chemical energy and connects reactions that need and produce energy.
What is biochemical reaction?The chemical reactions that take place in living things and involve biomolecules are referred to as biochemical processes.To expedite most biochemical reactions, an enzyme is a type of biological catalyst. The amount of activation energy required for the reaction to start is decreased by enzymes. Most enzymes are proteins that only interact with one particular chemical, known as their substrate.Photosynthesis and cellular respiration involve some of the most significant biological processes. Nearly majority of the species on Earth receive their energy from these two processes combined.It is a science that combines biology and chemistry and is laboratory-based. Biochemists can comprehend and address biological issues by utilizing chemical understanding and methods.Learn more about biochemical reaction here:
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The truck carrying heavy loads have more tyre.Give reason.
Answer:
the load carrying heavy vehicles have large number of wheels so that the pressure on the road is reduced due to larger contact area.
Also, using large number of wheels ensures that the force due to the load is shared among the tyres and no single tyre is under stress.
Answer:
The truck carrying heavy loads have more tyres as it needs a larger surface area to keep the truck balanced.
Explanation:
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The somatic nervous system primarily controls _________ movements. The autonomic nervous system primarily controls movements.
A. relevant; irrelevant
B. involuntary; voluntary
C. voluntary; involuntary
D. irrelevant; relevant
Answer:
voluntary movements
Explanation:
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Describe one or more of the scientific theories regarding the origin of life on the early Earth. Explain how RNA is important to this theory.
The RNA world is a hypothesis associated with the emergence of life on Earth and it is important because states that RNA had catalytic functions.
What is the RNA world?The RNA world is a scientific theory that states life began as primitive organisms in which the RNA played a dual function, i.e., as genetic material and as an enzyme.
The RNA world theory is sustained by the presence of ribozimes, i.e., enzymes composed of RNA instead of proteins.
In conclusion, the RNA world is a scientific hypothesis associated with the emergence of life on Earth and this theory is important because it states that RNA had catalytic functions.
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What is a hypothesis?
A. A random guess
B. An educated prediction based on knowledge
C. A theory
D. A way for scientists to make up lies
I really need help with 6 thanks you
Answer:
pancreas
Explanation:
beta cells of the pancreas produce insulin
You go for a run and breathe heavily for an extended amount of time. How is this affecting your pH levels?
A. Decreasing the pH, making it more acidic.
B. Increasing the pH, making it less acidic.
C. Increasing the pH, making it more acidic.
D. Decreasing the pH, making it less acidic.
You will run and breathe heavily for a long period of time. is affecting your pH levels, Lowering the pH, making it more acidic.
A. Lowering the pH, making it more acidic.How does respiratory rate affect pH?When it is respiratory, it occurs due to an increase in the amount of volatile acids in the body, which lead to an increase in pCO2. When it is metabolic, it occurs due to the accumulation of non-volatile acids, which lead to the loss (excessive consumption) of bases, mainly bicarbonate, causing a drop in pH.
With this information, we can conclude that By eliminating carbon dioxide during expiration, pulmonary ventilation reduces the acidity of the blood, helping it to maintain the desired alkalinity level.
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A genetic experiment with peas resulted in one sample of offspring that consisted of:________
Answer:
439 green peas and 166 yellow peas for your answer