Answers
1. Hans Molisch was a Austrian botanist that create the Molisch's test, that is used to indicate the presence of carbohydrates by the dehydratation of the crabohydrate by sulfuric acid producing an aldehyde molecule that creates a violet ring in the test tube. The hypothesis is the study of carbohydrate concentration in leaves and how it can be test with the analyze of the reaction between the carbohydrate and an acid to form a aldehyde in a ethanol 95% solution.
To make the test the leaves are in the dark to stop the photoshynthesis process and ensure a more accurate value of carbohydrate concentration in rest stage (without the production of new sugars from metabolic source).
2. The leaf is boiled in alcohol solution to dehydrate the tissue and make the reaction happen faster between the carbohydrates and the acid molecule, 3. being used iodine was a dye for the clearest visualization of the experiment.
Related Questions
8. Write yes or no to indicate whether the options apply to index fossils or not:
the organisms lived during a particular, short time period
a)
b)
the organisms lived over a long span of time
)
c)
found in sedimentary rock
d)
found in igneous rocks
SO
e)
three criteria
f)
easily recognized
g)
not very many of the organisms existed
found on only one or two continents
h)
Answers
Answer:
I think its Yes ye
s bo no ye
s no
the most successful treatment for anorexia nervosa involves . group of answer choices use of diuretics dietary counseling on an outpatient basis by a registered dietitian isolation from the family and forced tube feeding inpatient psychological, nutritional, and medical therapy, often involving the whole family
Answers
The treatment for anorexia nervosa involves a combination of inpatient psychological, nutritional, and medical therapy. This approach addresses the multiple and complex issues that underlie anorexia nervosa.
Inpatient treatment provides a safe and controlled environment for patients to stabilize their weight and medical condition, and to begin addressing psychological and emotional issues. anorexia nervosa counseling with treatment registered dietitian is an essential component of treatment, as patients with anorexia nervosa often have a distorted relationship with food and need guidance on how to nourish their bodies in a healthy way. The use of diuretics or forced tube feeding is not recommended as the treatment for anorexia nervosa, as they do not address the underlying psychological and emotional issues and can be harmful to the patient's health.
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What is humus made of? (Select all that apply.)
A. earthworms
B. nutrients
C. bacteria
D. rocks
Answers
Answer:
A. earthworms
B. nutrients
C. bacteria
Explanation:
Humus is rich in organic matter and also is abundant in inorganic mineral nutrients.
(*) Sorry for my late answer but I hope this helps others that are looking for this.
100% in the test ;)
Humus is made of Earthworms, nutrients and bacteria. So, the correct options are A, B and C.
What is Humus?Humus is the soil's black organic material that results from the breakdown of plant and animal debris. It is a type of organic material for soil. It has a lot of nutrients and keeps the soil moist. The Latin word for "earth" or "ground" is humus.
Humus is described as a dark organic substance that develops in soil as a result of plant and animal debris decomposing. It is organic and dark in colour because carbon has accumulated there. It contains elements that are crucial to maintaining healthy soil. Earthworms, nutrients, and microbes make up humus.
Because humus is a feature of loamy soils, the high concentration of nutrients in the soil is caused by humus. Humus reduces a substance's porosity by obstructing the pores that permit the passage of water and air.
Therefore, the correct options are A, B and C.
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HELP ASAP. Sometimes an organism gradually becomes buried in rock layers and preserved. This process is called (4) _____ and forms (5) _____. If a living thing is pressed into a rock and leaves an impression, we call what is left behind a (6) _____. Sometimes tiny pieces of rock, called (7) _____, fill in the impression. When these become cemented into a rock, the resulting fossil is called an (8) _____.
ps this is urgent will give brainlyist
Answers
Fossil formation is formed over the years when minerals replace the bone materials. The gaps are fill with the following:
4. Mineralisation
5. Fossils
6. External mold
7. Sediments
8. Trace fossil.
Fossil formationAfter the death of an animal, the body may be under the mud or rocks. As time goes on, the minerals in the soil takes over the organisms original material and hardens it into rock in a process called Mineralisation.
Mineralisation leads to the formation of fossils which are formed when dead decaying organic matter are subjected to pressure under rocks for years.
If the living thing is pressed into a rock and leaves an impression, we call what is left behind an external mold.
Trace fossil are formed when the external molds are filled with tiny pieces of rocks called sediments.
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The image shows an energy pyramid. Vulture Coyote Prairie dog Grass Which statement about how energy flows through this ecosystem is supported by this ecological pyramid? OA. The highest trophic level has the most available energy because vultures are a tertiary consumer. B. The organisms of the second trophic level obtain their energy from the coyotes located in the third trophic level. C. The grasses' trophic level has the most energy, but only some of that energy moves to the second trophic level. D. The third trophic level is made up of prairie dogs that get their matter and energy from the grasses.
Answers
The third trophic level is made up of prairie dogs that get their matter and energy from the grasses (option d).
The energy pyramid depicted in the image illustrates the flow of energy through an ecosystem. In an energy pyramid, each level represents a trophic level, indicating the position of organisms in a food chain. The pyramid narrows as it ascends, indicating the decrease in available energy at higher trophic levels.
In this specific pyramid, the lowest trophic level is occupied by the grass. This makes sense because grass is a producer that captures energy from the sun through photosynthesis. As a result, it possesses the most energy within the ecosystem.
Moving up the pyramid, the second trophic level is occupied by the prairie dogs. They are herbivores that primarily consume grass for their energy needs. This demonstrates that the prairie dogs acquire their matter and energy from the grasses, supporting option D.
The third trophic level contains the coyotes, which are tertiary consumers. Tertiary consumers feed on other consumers, not producers. Therefore, option A is incorrect since vultures, not coyotes, are tertiary consumers in this ecosystem.
Option B is also incorrect because the coyotes do not obtain their energy from other coyotes located in the third trophic level. They acquire their energy indirectly from the grasses through the prairie dogs.
Finally, option C is incorrect as it states that the grasses' trophic level has the most energy. While the grasses are indeed the primary producers and possess the most energy, not all of that energy moves to the second trophic level.
Thus, the correct statement supported by the ecological pyramid is option D: The third trophic level is made up of prairie dogs that get their matter and energy from the grasses.
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Which of the following is true about photosynthesis?
A.
Chloroplasts release energy from the chemical bonds in sugar.
B. Chloroplasts convert light energy into chemical energy in the form of sugar.
C. Mitochondria convert light energy into chemical energy in the form of sugar.
D. Mitochondria release energy from the chemical bonds in sugar.
Answers
Answer:
B
Explanation:
Mitochondria both deal with cellular respiration, not photosynthesis, meaning that C and D are wrong. and if you look at the photosynthesis equation, it equals glucose = sugar
Capillary action is what allows water to move up the vessels of plants from the roots to the leaves which group of properties of water is not involved in the process of capillary action
Answers
Answer:
Diffusion
Explanation:
Osmosis occurs along with capillary action
Emilia Burton is an 18-year-old high school student who began to experience weight loss despite a ravenous appetite and resulting increased dietary intake. She has to make frequent trips to the bathroom to urinate and has difficulty concentrating on her work because of fatigue. She drinks large volumes of coffee to help with a constant dry mouth and to combat her fatigue. At a clinic appointment, it was noted that her weight has dropped from 140 lb to 128 Ib.
a) What is the probable diagnosis of this patient? What information from the above scenario would support your diagnosis?
b) What laboratory test(s) should be performed? Which result(s) would support your diagnosis? What immediate and long-term therapy will Emilia need to manage her disorder?
c) Emilia should be aware of the potential acute and long- term complications of her condition. What are they?
Answers
Answer:
A) The diagnosis is Diabetes mellitus which is based on the given symptoms that are weight loss, dry skin, fatigue, profuse urination, ravenous hunger all confirm diabetes.
B) Test for confirmation of diabetes Mellitus are-
Fasting plasma glucose test
Postprandial glucose test
Random plasma glucose test.
A1C test
If the test shows higher blood glucose it confirms the diagnosis
Immediate Treatment:-
Medication
Long term treatment:
Exercise controls the blood sugar
Diet should be healthy and should avoid high glucose options.
C) Acute and long term complications:-
Diabetic retinopathy
Diabetic foot
Diabetic neuropathy
Coronary heart disease
Kidney damage
Cerebrovascular disease.
What did Gregor Mendel do to study different characteristics in his genetics experiments?
Answers
Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits.
Which stWhich statement about the rhythmic structure of the excerpt is true? atement about the rhName a structural difference between triglycerides and phospholipids.ythmic structure of the excerpt is true?
Answers
The true statement is "Triglycerides are composed of three fatty acids bonded to a glycerol backbone".
What are triglycerides and phospholipids?Triglycerides are a type of lipid molecule composed of three fatty acid chains bonded to a glycerol molecule. The fatty acids are attached to the glycerol backbone through ester linkages.
Triglycerides are not always associated with cell membranes. Triglycerides serve as a storage form of energy in the body and are commonly found in adipose tissue.
Phospholipids are lipid molecules that are composed of a phosphate group bonded to a glycerol backbone and two fatty acid chains. The phosphate group is usually bonded to a polar head group, which can vary depending on the specific phospholipid.
Phospholipids and triglycerides are distinct molecules with different structures and functions. They have different compositions and roles in biological systems.
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Complete question:
Which of the following statements is true of phospholipids and triglycerides:
Triglycerides are composed of three fatty acids bonded to a glycerol backbone
Phospholipids are a phosphate head that is bonded directly to two fatty acids
Triglycerides are always associated with cell membranes, as they provide flexibility
Phospholipids and triglycerides are the same molecules
Phospholipids are composed of a phosphate group bonded to a glycerol backbone and two random side groups
The skeletal system is similar to which of the following cell structures?
Answers
Answer:
the cell part that has the same function of the skeletal system is the cell wall
Explanation:
3. It's snowing and 30°F. If the temperature increases to 36°F, which of the following is likely to happen?
a. The snow will begin to evaporate
b. The amount of snow will increase
c. The snow will melt into rain
d. The snow on the ground will freeze
Answers
If the temperature increases from 30°F to 36°F while it is snowing, it is likely that "the snow will melt into rain," will occur.
When the temperature rises from below the freezing point (30°F) to above the freezing point (36°F), the atmospheric conditions change, causing the snowflakes to melt. The rising temperature provides the energy needed to break the hydrogen bonds that hold the water molecules together in the ice cubes. The effect of this is that frozen ice turns into liquid water.
Because the temperature has risen above the freezing point of water, the snow turns into rain. Individual water droplets are formed when the crystalline structure of snowflakes is lost. These drops can cause rain as soon as they fall from the sky.
Therefore, the correct option is C.
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Describe what response the body has once the viruses begin escaping the dead cell.
Answers
What are some major symptoms of Cancer? :-;
Answers
The major symptoms of cancer is Fatigue, Changes in bowel or bladder habits, Difficulty swallowing, etc....
What is meant by cancer ?Cancer may develop when the body's normal regulating mechanism fails. Old cells expand wildly instead of degenerating into new, abnormal ones. A tissue mass made up of extra cells is called a tumor. One type of cancer that doesn't cause tumors is leukemia. This does not imply that cancer is now a prevalent disease, despite the fact that the overall rate of new cases in the United States has been continuously falling for decades. According to the National Cancer Institute, around 39.5% of American men and women will be diagnosed with cancer at some point in their life. Changes (mutations) to the DNA within cells are what lead to cancer.To learn more about cancer refer to:
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The transport of an ion across a membrane against its concentration gradient can be accomplished by:
Answers
because the difference in environment across the membrane. Going from low concentration to higher concentration
Which type of specialized cell can be found in plants?
OA. Neuron
B. Guard cell
OC. Osteocyte
OD. Red blood cell
Answers
Guard cells can be found in the epidermis of the leaf.
What is the difference between blue green and fungi?
Answers
Blue-green algae are photosynthetic prokaryotes, while fungi are eukaryotes that obtain nutrition through absorption.
Blue-green algae and fungi are both organisms, but they belong to different domains and have distinct characteristics. Blue-green algae, also known as cyanobacteria, are classified under the domain Bacteria, while fungi belong to the domain Eukarya.
Blue-green algae are prokaryotic organisms, lacking a true nucleus and membrane-bound organelles. They obtain energy through photosynthesis and are capable of converting sunlight into chemical energy. They typically inhabit aquatic environments, such as lakes, ponds, and oceans, and some species can fix atmospheric nitrogen.
On the other hand, fungi are eukaryotic organisms with a distinct nucleus and membrane-bound organelles. They obtain nutrition by absorbing organic matter from their surroundings. Fungi play crucial roles in decomposition and nutrient cycling in ecosystems. They can be found in various habitats, including soil, plants, and even as symbiotic partners with other organisms, such as in mycorrhizal associations.
In summary, the primary differences between blue-green algae and fungi lie in their cellular structure, mode of nutrition, and classification. While blue-green algae are photosynthetic prokaryotes, fungi are eukaryotes that obtain nutrition through absorption. Understanding these distinctions helps in appreciating the diversity and ecological significance of these two groups of organisms.
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which macromolecule is involved in how hemophilia is passed
Answers
The macromolecule involved in how hemophilia is passed is DNA, specifically the genes carried on the X chromosome. The inheritance of hemophilia follows a pattern influenced by the presence or absence of the hemophilia gene on the X chromosome.
The macromolecule involved in how hemophilia is passed is DNA, specifically the genetic material carried on the X chromosome.
Hemophilia is an inherited bleeding disorder caused by a mutation in one of the genes responsible for producing clotting factors in the blood. The genes involved in hemophilia, such as the F8 gene (hemophilia A) or F9 gene (hemophilia B), are located on the X chromosome.
The X chromosome is one of the two sex chromosomes, with females having two copies (XX) and males having one copy (XY). Since hemophilia is a recessive trait, it typically affects males more often than females. This is because if a male inherits a defective X chromosome carrying the hemophilia gene, he will develop the disorder since he does not have a second X chromosome to compensate for the mutation.
In females, who have two X chromosomes, hemophilia can be passed on if they inherit a defective X chromosome from both parents. These females are carriers of the hemophilia gene and may not exhibit symptoms themselves but can pass the mutation to their offspring.
The inheritance of hemophilia follows a specific pattern, with affected males having an X chromosome with the hemophilia gene and unaffected males having a normal X chromosome. Female carriers have one normal X chromosome and one X chromosome with the hemophilia gene.
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What is human cell and define function ?
Answers
Cells in the human body number in the trillions and come in all shapes and sizes. These tiny structures are the basic unit of living organisms .The body contains around 50—100 trillion cells, and they vary widely in size, number, structure, and use.
Examples of Human Cell Types-
Many common types of human cells — such as bone cells and white blood cells — actually consist of several subtypes of cells. Each subtype, in turn, has a special structure and function.
Functions of human cell-
It protects the cell.It regulates the exchange of substances in and out of the cell.They process and bundle macromolecules in the cells.They modify, sort, and package proteins. That’s why Golgi bodies are tagged as the post office of the cell. They gather simple molecules and group them to form a complex.For more information about human cells see,
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Different types of cells are found in the human body which perform specialized functions such as circulation, respiration, excretion, transportation, etc.
What is Human cell?Human bodies are made up of eukaryotic cells. Cells are the basic building blocks of all the living things including animals, plants, fungi, and protists. The human body is composed of over trillions of cells. These cells provide structure for the body, take in nutrients from the food they eat, convert those nutrients from food into energy, and also carry out specialized functions.
Different types of cells which perform specialized functions in the human body include: stem cells, these are the embryonic stem cells and adult stem cells, one cells including osteoblasts, osteoclasts, osteocytes, skin cells including keratinocytes, melanocytes, merkel cells, langerhans cells, endothelial cells such as those lining blood vessels, and epithelial cells such as those lining body cavities.
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Cells need energy.Give reason?
Answers
Answer:
because cell is cell and it is cell
Answer:
Cells need energy to keep them alive. Processes such as cell division, Active transport, and protein synthesis all require energy.
Explanation:
Palisade mesophyll cells have very large vacuoles.
Explain how water moves from the xylem in the leaf into these vacuoles.
Answers
Answer:
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1-Water is passively transported into the roots and then into the xylem. 2-The forces of cohesion and adhesion cause the water molecules to form a column in the xylem. 3- Water moves from the xylem into the mesophyll cells, evaporates from their surfaces and leaves the plant by diffusion through the stomata.
12. Removing an organism from an ecosystem will have which of the following affects? Select all that apply.
A. Increase in biodiversity
B. Decrease in biodiversity
C. Increase in the overall health of the ecosystem
D. Decrease in the overall health of the ecosystem
Answers
Answer:
B and D
Explanation:
Biodiversity comes from having multiple types of organisms. This also allows different organisms to eat and create nutrients that is needed by all other organisms in the ecosystem.
Monotremes are pouches animals that live in Australia or New Zealand
Answers
Answer:
true
Explanation:
PLEASE HELP!!!!!!
The process that produces 2 genetically different cells is
A) mitosis
B) mitosis and meiosis
C) meiosis II
D) meiosis I
Answers
Answer:
b
Explanation:
Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical daughter cells. Meiosis begins following one round of DNA replication in cells in the male or female sex organs.
Where is the thylakoid located in a cell?
A. In the cell wall
B. In the cytosol
C. In chloroplasts
D. In the cell membrane
it’s c
but 15 points :)
Answers
Thylakoids are membrane-bound compartments located within chloroplasts. The correct option is C
What is thylakoids ?
Thylakoids are flattened, membrane-bound compartments located within the chloroplasts of plant cells and some other photosynthetic organisms. They are the sites of the light-dependent reactions of photosynthesis, which occur in the thylakoid membranes.
The thylakoid membranes contain chlorophyll and other pigments that absorb light energy, as well as the electron transport chains and ATP synthase complexes that convert the absorbed energy into chemical energy in the form of ATP and NADPH.
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tion 5 of 50
An investigation is an example of
Answers
An investigation is an example of research.
What is research?Research is the process of gathering and analyzing information in order to answer a question or solve a problem. Investigations are a type of research that is typically conducted to gather evidence about a crime or other incident. Investigators may gather evidence through interviews, document reviews, and physical examinations. They may also use scientific techniques, such as DNA testing or fingerprint analysis.
The goal of an investigation is to gather enough evidence to determine what happened and who is responsible. This information can then be used to bring charges against the perpetrator or to take other necessary steps.
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In pea plants, yellow seed color is dominant and green seed color is recessive. What will the generations look like? Assume that Mendel’s method of crossing two true breeding parents with opposite traits is followed. Check all that apply.
Answers
Answer:
-The P generation has yellow and green seeds.
-The F1 generation has all yellow seeds.
-The F2 generation has yellow and green seeds.
Yellow seed color (dominant)
Green seed color (recessive)
P generation: In Mendel's experiments the parental generation.
Yellow seed color
1 generation: In Mendel's experiments the offspring of the P generation
Yellow seed color and
Green seed color
F2 generation: In Mendel's experiments the offspring of the F1 generation
Answer:
-The P generation has yellow and green seeds.
-The F1 generation has all yellow seeds.
-The F2 generation has yellow and green seeds.
Explanation:
How do the three parts of the evolution recipe work together?
Answers
Answer: Three key parts of the recipe for evolution are variation, selection, and inheritance.
Explanation:
VARIATION:- The first part of the recipe is variation. Variation refers to the differences that exist between individuals within a SPECIES. These variations can be caused byGENETIC MUTATION, environmental factors, or a combination of both. Some variations may be advantageous and provide a better chance of survival, while others may be disadvantageous and decrease the chances of survival.
Selection: The second part of the recipe is selection. Selection refers to the process by which individuals with advantageous variations are more likely to survive and reproduce, passing on their advantageous traits to their offspring. This is known as natural selection, and it is the driving force behind evolution.
Inheritance: The third part of the recipe is inheritance. Inheritance refers to the passing down of genetic traits from one generation to the next. Offspring inherit genetic traits from their parents, including any advantageous variations that their parents may have had.
Are the daughter cells produced by Mitosis identical to their parent cells or are they different? Explain your answer.
Answers
Answer:
Daughter cells produced by mitosis are identical to their parent cells.
Explanation:
Mitosis is the process by which a cell replicates its chromosomes and then segregates them, producing two identical nuclei in preparation for cell division. In mitosis, the DNA in a cell is duplicated and pulled to opposite sides of the cell. After the cells split, each will have DNA identical to that of the parent because each was given one of the pair of duplicated chromosomes.
I will give 100 points if your answer is correct
Construct a model to show the movement of matter and energy from plants into other organisms. Show how mass and energy are conserved before and after each interaction. For example, the beginning substances before an interaction equal the ending substances, and vice versa.
Answers
Answer:
the answer is lower:]