Answer:
0.49
Explanation:
just because
One student made the incomplete diagram shown below to represent the relationship between magma igneous rocks and metamorphic rocks.
Which of these is the correct next step to complete the diagram?
A. Put an arrow labeled cools and crystallizes pointing from igneous rocks to metamorphic rocks
B. Put an arrow labeled cools and crystallizes pointing for metamorphic rocks to igneous rocks
C. Put an arrow labeled heat and pressure points in from igneous rocks to metamorphic rocks
D. Put an arrow labeled heat and pressure pointing from metamorphic rocks to igneous rocks
Answer:
C. Put an arrow labeled heat and pressure pointing from igneous rocks to metamorphic rocks
Explanation:
Metamorphic rocks are changed rocks that are formed from pre-existing rocks that were once sedimentary or igneous rocks. Heat and pressure majorly act on igneous rock, which over time change these rocks into a different rock entirely, known as metamorphic rocks.
Therefore, the next step to complete the diagram will be:
"C. Put an arrow labeled heat and pressure pointing from igneous rocks to metamorphic rocks."
How does renal medulla differ from renal cortex?
Answer:
The main difference between renal cortex and renal medulla is that renal cortex is the outer region of the kidney which contains blood vessels connected to the nephrons whereas renal medulla is the inner region of the kidney which contains 8-12 renal pyramids
What is the difference between the exchange of gaseous during respiration and
photosynthesis.
Answer:
Photosynthesis doesn't occur at night. When there is no photosynthesis, there is a net release of carbon dioxide and a net uptake of oxygen. ... the rate of photosynthesis is higher than the rate of respiration. there is a net release of oxygen and a net uptake of carbon dioxide.
How are finches in the Galapagos Islands a good example of adaption?
Look at the diagram. When this process happens in human cells, how many chromosomes will there
be in cell F?
Enter your answer as a number
Answer:
46 chromosomes
Explanation:
In mitosis (I think it is this process) the 46 chromosomes in cell A replicate themselves, so there are 92 in total in cell B. Then the chromosomes are pulled apart and the cell splits into 2 daughter cells, leaving 46 chromosomes in each.
Answer:
46
Explanation:
Name the type of classifications of tissue formed by combination of cell.
a) Red Blood Cell:
b) Muscle Cell:
c) Nerve Cell:
Answer:
its (a)
Explanation:
A tissue is a group of red blood cells of common origin which are structurally similar and perform a particular function. Organ is a group of tissues and organ system is a group of organs.Therefore, the correct answer is option A.hope it helps you.pls mark me as branliestWhich of the following factors affecting population growth is density
independent?
A. Competition
B. Disease
C. Natural disaster
D. Predation
C. Natural disaster is a density-independent factor affecting population growth. Density-independent factors are those that affect the population irrespective of the population size or density.
How Natural disasters reduce population sizes?Natural disasters such as floods, hurricanes, earthquakes, and wildfires can reduce population sizes regardless of how many individuals were present in the population before the disaster occurred. The other factors listed - competition, disease, and predation - are all density-dependent factors, which means that they become more significant as the population size or density increases.
Competition is an example of a density-dependent factor, as it increases as the population size increases. As more individuals compete for limited resources such as food, water, and shelter, the rate of population growth slows down.
Disease is another density-dependent factor, as it spreads more easily in crowded populations where individuals are in close contact with one another.
On the other hand, natural disasters such as floods, hurricanes, and wildfires are examples of density-independent factors. These events can affect a population regardless of its size, and they can cause significant decreases in population size.
Predation can be both a density-dependent and density-independent factor. In some cases, predation can increase as the population size increases, making it a density-dependent factor. However, predators can also reduce the population size through random hunting or selective hunting of weaker individuals, making it a density-independent factor.
Understanding the factors that affect population growth is important for predicting and managing population sizes in both natural and human-made ecosystems.
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What conclusion can be drawn concerning an inhibitor if the Km is the same in the presence and absence of the inhibitor
Answer: The inhibitor has a structure that is not similar to the substrate.
Explanation:
Enzymes are molecules that act as catalysts of chemical reactions, accelerating the reaction rate without affecting the equilibrium of the reaction, as long as it is energetically possible. They act on molecules called substrates, which are converted into different molecules called products.
Enzymes are very selective with their substrates and are also susceptible to inhibitors which are molecules that regulate enzyme activity, inhibiting its activity. Inhibitors can be classified as reversible and irreversible. Irreversible inhibitors bind covalently to the enzyme with no possibility of reversing the modification they make, while reversible inhibitors bind reversibly to the enzyme and can reverse the modification.
A reaction occurring under the control of an enzyme reaches equilibrium much faster than the corresponding uncatalyzed reaction. The reaction, i.e. the production of products, can reach a saturation point if the substrate concentration increases too much, decreasing the concentration of free enzyme, which becomes the form with bound substrate. At the maximum rate (Vmax) of the enzyme, all active sites of the enzyme have substrate bound, and the amount of complexes is equal to the total amount of enzyme. The amount of substrate required to obtain a given reaction rate is also important and this parameter is given by the Michaelis-Menten constant (Km), which is the concentration of substrate required for an enzyme to reach half its maximum velocity. Each enzyme has a characteristic Km value for a given substrate, which can tell us how close the binding between the substrate and the enzyme is. Then, inhibitors bind to the substrate and increase the Km value as it interferes with the binding between substrate and enzyme. In this case, the Km value of the enzyme is the same in the presence and absence of the inhibitor, this means that there is no change, because the inhibitor has a different structure to the substrate, it does not bind and does not change the Km value.
A Scientist discovers a chemical that she thinks might be a potential treatment for a certain type of cancer cell. In order to test her hypothesis, the scientist treats one plate of cancerous cells with the newly discovered chemical, and leaves another plate of cancerous cells untreated. After 7 days, the scientist measures the number of living cells in each plate. The scientist finds that the cells treated with the chemical have a lower survival rate than cells left untreated. The scientist further observes that the substance has an effect on the Rough endoplasmic reticulum (RER). How might disabling the rough ER potentially hurt the cancerous cells? Be specific in your answer. What is the dependent variable? What is the independent variable?
Answer:
Affecting the ER causes alteration in cell homeostasis and eventual death.Independent variable: Drug or chemicalDependent variable: Cancer cells survival.Explanation:
Hypothesis ⇒ A chemical ⇒ might be a potential treatment for cancer cells.
Experiment:
Treated ⇒ One plate of cancerous cells with the new chemicalUntreated ⇒ Another plate of cancerous cells with no chemical7 days later ⇒ the number of cells in each plate
Results:
Cells treated with the chemical have a lower survival rate than cells left untreated.
Treated plate ⇒ fewer cellsUntreated plate ⇒ more cellsChemical affects the Rough endoplasmic reticulum (RER)
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The endoplasmic reticulum is in charge of many cellular functions, such as protein folding, maturation, and transport, especially those destined for secretion. It produces the latest protein modifications after transduction.
When the synthesizing protein gets in the Rough endoplasmic reticulum, it continues its building in the organelle. Finally, the protein suffers folding and the initial stages of glycosylation.
Once the protein synthesis in the endoplasmic reticulum is over, these molecules are packaged into vesicles and sent to the Golgi complex for their final association with carbohydrates. Finally, protein leaves the Golgi complex and goes to its final destiny.
Any alteration in the intracellular environment
inevitably affects the organelle and its functions. When the organelle is not properly working, proteins synthesis is affected and, consequently, all the cellular activities. The affected cell homeostasis might be so altered that the cell ends dying.
If the drug affects the ER by altering its environment or directly affecting it, the organelle will fail to perform its functions, and the cell will eventually dye.
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The independent and the dependent variables are the two principal factors needed in an experiment.
Independent variable: Refers to all the variables in an experiment that provoke a response in another variable. The independent variable changes or is controlled and modified in the experiment to analyze how another variable responds to it. It changes to analyze its effects on the dependent variable. Usually, the independent variable is represented by the X letter.
In the exposed example, the independent variable is the drug that affects the cancer cells. The researcher decides to apply it or not, and the concentrations in which the drug is.
Dependent variable: Refers to the variable that reacts to the changes produced in the independent variable. Depending on how the independent variable is modified, the dependent variable change. It is usually identified by the letter Y.
In the exposed example cell survival is the dependent variable. Cancer cells respond to the presence/absence of the chemical, and might differently respond to the varying concentration of the drug.
20 This diagram shows an enzyme-substrate complex.
Structure X
Structure Z
Structure Y
m
Step 1
Step 2
Step 3
Which is represented by Structure X?
Answer:
structure X is the substrate so the answer is A
Explanation:
As it is trying to fit in the enzymes active site
According to the enzyme-substrate complex, the structure X is represented by a substrate. Thus, the correct option for this question is A.
What do you mean by Enzymes?Enzymes may be defined as biocatalysts that significantly enhance the rate of a chemical reaction without being altered in the overall process. It may be thought that all cellular reactions or processes are mediated by enzymes. Enzymes have a series of characteristics that depends on their activity.
According to the diagram given in the question, the structure X is the substrate, the structure Y is an enzyme, and the structure Z is the product. While stage 2 represents the enzyme-substrate complex.
Therefore, according to the enzyme-substrate complex, the structure X is represented by a substrate. Thus, the correct option for this question is A.
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A square kilometer of forest has 200 deer. What is the term that is used to describe this number?
density-dependent
birth rate
limiting factors
population density
Answer:
Population Density
Explanation:
I had the same answer and it was correct
Make me brainliest pls
The term that is used to describe the number of deer in a square kilometer of forest is population density.
What is population density?
Population density is a measure of how crowded or dispersed a population is in a particular area. It is calculated as the number of individuals of a particular species per unit of area, such as square kilometer or square mile. This measure helps to understand the concentration of individuals of a species in a given area. A high population density means there are more individuals of a species per unit area, whereas a low population density indicates fewer individuals in a given area.
Population density plays a crucial role in understanding and predicting the effects of population growth on the environment. High population density can lead to increased competition for resources such as food, water, and shelter, which can cause stress on the ecosystem. It can also lead to an increased risk of diseases and higher rates of pollution. In contrast, low population densities can lead to the extinction of species due to lack of genetic diversity and inbreeding. Understanding population density is important for conservation biology, urban planning, and resource management, among others.
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How did Newton map the orbits of the planets?
Answer:
Newton developed a mathematical formulation of gravity that explained both the motion of a falling apple and that of the planets. He showed that the gravitational force between any two objects is proportional to the product of their masses and inversely proportional to the square of the distance between them
Explanation:
name the various classes of algae given by F E Fritsch
Answer:
1. Chlorophyceae
2. Xanthophyceae
3. Chrysophyceae
4. Bacillariophyceae
5. Cryptophyceae
6. Dinophyceae
7. Chloromonadineae
8. Euglenineae
9. Phaeophyceae
10. Rhodophyceae
11. Cyanophyceae or Myxophyceae.
Explanation:
Algae are a group of living organisms classified under the kingdom Protista. They exhibit unique characteristics such as mode of reproduction, type of pigment, food reserve material, locomotive ability etc.
A british scientist (botanist) named Felix Eugen Fritsch in 1935 classified algae into 11 different classes based on some of these characteristics. The classes of algae are as follows:
1. Chlorophyceae (green algae)
2. Xanthophyceae (yellow green algae)
3. Chrysophyceae
4. Bacillariophyceae (diatoms)
5. Cryptophyceae
6. Dinophyceae
7. Chloromonadineae
8. Euglenineae
9. Phaeophyceae (brown algae)
10. Rhodophyceae (red algae)
11. Cyanophyceae/Myxophyceae (blue green algae)
In addition to highly repeated DNA sequences and unique (single-copy) DNA sequences, a third class of DNA exists. What is it called, and what types of elements are involved in it
Answer:
long-read sequencing
Explanation:
a method of dna sequencing under active development
Forms of inheritance that do not follow typical Mendelian patterns and that appear to be more influenced by the parent contributing the most cytoplasm to the embryo are grouped under the general heading of ________.
Answer:
Extrachromosomal or cytoplasmic inheritance
Explanation:
Extrachromosomal or cytoplasmic inheritance refers to hereditability transmission controlled by cytoplasmic genes.
This form of inheritance lays in genes that are out of the nucleus. Information for some characters is placed in organelles in the cytoplasm, such as mitochondria and chloroplasts. These organelles have a well-defined portion of the total cellular genome.
Although mitochondrial inheritance is mostly maternal, recent studies have demonstrated that it might also be paternal.
Sperm cells hardly carry mitochondria, so mitochondrial DNI is mostly inherited from the maternal side. If there exists any mutation in this DNI, the whole progeny of the mutated woman will be affected, as they will get the mother´s mitochondria carrying the mutation. On the contrary, if there is a man affected by a disease caused by a mutation in mitochondrial DNI, non of their descendants will get the disease.
các cặp gen trong phép lai sau là di truyền độc lập AaBbDdXX AaBbDdXYcho thế hệ F
Answer:
rjwosxjudua9e8r7xj, hq9rbfsi48t8fidjxh hd
Explanation:
6482hfjziso37bh7r9w9qhzh
The volume of a right circular cylinder can be approximated as follows: Volume = ?r2h; where r is the radius of the cylinder and h is the height of the cylinder; ? is a constant that is roughly equal to 3. Using the simple approximation above, calculate the volume of a right circular cylinder with a radius of 2 meters and a height of 9 meters
Answer:
42m3
Explanation:
Bacteria of the genus Mycoplasma lack cell walls. What sort of environment do they require for survival
Answer:
biofilm
Explanation:
Answer:
isotonic
Explanation:
In hypotonic environments, the cells fill with water and bloat until they explode.
In hypertonic environments, the cells will lose their water and shrink.
In an isotonic environment, the cells would remain constant and thrive.
The answer is a right i hope this help guys
Answer: Yes, this helps a lot.
All of the following are examples of geological features EXCEPT
ridges
valleys
bridges
waterfalls
Answer: The correct answer is bridges
Explanation: Confirmed correct
f Write any functions of collenchyma tissue
Answer:
ChollenchymaServe as the cells that support photosynthesis.Explanation:
The chollenchyma are parenchymal cells that contain chloroplasts.In these cell synthesis of carbohydrate is at its maximum, including the pallisade cells for distribution around the plant.
hope it helps much
by: johnglenleemahusay
List 7 ways to conserve vegetation
1.we should not cut trees as this can effect the food chain of animals.
2.we should water the plants everyday
3.we should atleast plant a baby plant every day.
4.we should not kill any animal.
5.we should decrease the use of plastics.
6.we should keep our area pollution free.
7.we should use natural pesticide to a plant
Which method of waste treatment is LEAST harmful to the environment?
Answer:
c
Explanation:
because burning burying and landfill are all harmful
Arrange the following sequence of events in the reproduction of flowering plants:
Germination, seed formation, fertilization, Pollination, dispersal of seed
Answer:
Pollination →Fertilisation → seed formation → dispersal of seed → Germination
Explanation:
This is the correct sequence of events in the reproduction of flowering plants.
Match the type of ELISA with what it is used to detect. Question 2 options: detects presences and concentration of antigen/protein detects presences and concentration of antibody 1. indirect ELISA 2. sandwich ELISA
Answer:
ELISA is a technique of enzyme linked immunosorbent assay.
Explanation:
The full form of Elisa is enzyme linked immunosorbent assay. The ELISA technique is a boichemical technique that is used to measure the amount of protein or the antibody in a solution and is divided into three types :
Competitive ELISADirect ELISA or Sandwich ELISAIndirect ELISA1. Indirect ELISA --- detects the presences and concentration of the antibody.
2. Sandwich Elisa or Direct ELISA --- detects the presences and concentration of the antigen/protein.
What would most likely occur over time if new technologies gave us information that challenged what scientists currently understand about natural selection
Question options:
A new scientific law would be established and proven by the findings. A new scientific theory would be established and proven by the findings. A current scientific law would be revised based on the new findings. A current scientific theory would be revised based on the new findings.
Answer:
A current scientific theory would be revised based on the new findings.
Explanation:
If new findings came about and challenged the current theory of natural selection so that Darwin's theory didn't look like it was true at all, the initial theory(darwin's theory of natural selection) would not be entirely discarded but revised according to these new findings and then form a sort of backbone to this new theory which would be based on findings of many independent researchers and not just one. Example: how some of Sigmund Freud's theories or Aristotle's may not be entirely valid today but still works as a fundamental for understanding other theories.
what is a tropic level? give an example
Answer:
Trophic Level Definition. A trophic level is the group of organisms within an ecosystem which occupy the same level in a food chain.
Examples of Trophic Level. Primary producers, or ”autotrophs”, are organisms that produce biomass from inorganic compounds
Explanation:
The condition of muscle fatigue is best explained by: Question 1 options: insufficient intracellular quantities of ATP due to excessive consumption the inability to generate sufficient quantities of ATP due to feedback regulation of synthesis the all or none law lack of intracellular calcium
Answer:
The correct answer is ''insufficient intracellular quantities of ATP due to excessive consumption''
Explanation:
The energy source for the muscle to contract efficiently is adenosine triphosphate (ATP). When ATP is metabolized, energy is obtained. Under normal conditions, the muscle has a sufficient energy reserve to support a limited time of maximum activity. When this reserve is depleted, the body activates other metabolic pathways to achieve more ATP. Glucose is activated first, then carbohydrates, and last - only if the exercise is prolonged - lipids (fats). The muscle, therefore, ends up transforming this ATP into the necessary energy.Whether our body uses more fat or more glucose / glycogen as fuel will depend, above all, on the intensity and duration of physical exercise. The body uses more fat the more gentle and prolonged the exercise; while, the more intense the sport, the more important the need for glycogen will be.Muscle fatigue is the inability or lack of strength to continue doing a certain activity. It happens when the muscles are not strong enough to continue. Specifically, when carrying out a physical activity, the active muscle requires oxygen and energy reserves of glycogen; When the intensity of the activity is increased, this need for oxygen increases, exceeding the levels that the transport system is capable of providing.This situation leads to the active muscle looking for another source of energy, increasing lactic acid which, in turn, it develops a metabolic acidosis that can lead to the breakdown of muscle fiber. ATP is obtained from the oxidative degradation of metabolic substrates such as muscle glycogen, serum glucose, free fatty acids originating from muscles or adipose tissue, being characteristic of muscle fiber, the consumption of ATP, and the production of ADP and Pi, much faster than it regenerates.
Which scenario describes unethical lab behavior?
A.
Danny stores the chemicals required for his experiment in flasks and beakers.
B.
Anna publishes the results of her experiment on the growth rate of saplings.
C.
Jason repeatedly runs an experiment until he gets the results he desires.
D.
Mia records her observations of an experiment precisely and accurately
Answer:
A. Danny stores the chemicals required for his experiment in flasks and beakers.
Explanation:
It is unsafe to store chemicals in open containers such as, a flask or beaker.
Please help
Please answer correctly
Answer:
1 a
2 b
3 c
Explanation:
