Answer:
External Respiration.
Explanation:
External Respiration is the type of respiration in which exchanges of gases occurs between the lungs and the bloodstream i.e. pulmonary capillaries. Inside the lungs, oxygen is loaded into the hemoglobin and carbon dioxide waste is unloaded, this process is called external respiration. This respiratory process takes place through the help of hundreds of millions of microscopic alveoli.
In an experiment to investigate a factor affecting photosynthesis, a leaf of a potted plant which had been kept in the dark overnight was covered with aluminum foil as shown in the diagram below 1. Aluminium foil The set up was kept in sunlight for three hours after which a food test was carried out on the leaf. (a) Which factor was being investigated in the experiment? b) What food test was carried out? (i) State the results of the food test (ii) Account for the results in c (i) above
Answer:
Photosynthetic activity.
Explanation:
The photosynthetic activity of the plant was being investigated in the experiment and no photosynthesis will occur because the aluminium foil reflect 95% of sunlight. Starch test is the food test that was carried out in the experiment. Starch from plants is broken down into its constituent sugar molecules by the plant body in order to provide energy to the tissues so if there is no photosynthesis occurs, the plant body uses starch so decrease occur in the concentration of the starch molecules when the starch food test will occur.
name the fluid which is produced by sebaceous gland
Answer:
Sebum
Explanation:
The sebaceous gland produces sebum, an oily, waxy substance. Sebum lubricates the skin and hair of mammals.
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The correct answer is A. Plastic trash in the neighborhood park.
Explanation
The tragedy of the commons was a term used by Garrett Hardin to describe a situation in which several individuals motivated by personal interests destroy or undermine a common good even though none of them is convenient for this. Outcome. According to the above, the correct answer is A. "Plastic trash in the neighborhood park", because this describes the result of an individual action of several people, which is to throw garbage in the park and that as a result causes general damage in the community.
urgent please answer
Please helppp!!! it’s of biologyyyy
Answer:
Im sorry i dont know the answer !!!
Explanation:
In 1970, Frye and Edidin published research describing the mobility of plasma membrane proteins. They fused mouse and human cells together, creating a hybrid cell, and then examined the localization of mouse and human proteins over time. Initially mouse and human proteins were each restricted to one-half of the heterokaryon, but over time the mouse and human proteins mixed, with each being present over the entire cell surface. What technique did Frye and Edidin likely use to examine the mouse and human proteins
Answer:
The answer is "fluorescent microscopy".
Explanation:
A microscope featuring fluorescence is just the same as a conventional light microscope with additional features. Conventional microscopy employs visible light (400-700 nanometers) to illuminate and generate an enlarged image data. Scientists use this highly sensitive, precise, dependable, extensively to see the location of chemicals in tissues and macrophages in organs.
Juan has collected a cricket. Which question can a dichotomous key help him
answer?
A. Are crickets attracted to porch lights?
B. Which species of cricket is this?
O C. Which species of cricket is the most popular?
O D. How many times do crickets chirp per minute?
The question that can be answered by a dichotomous key is the question; Which species of cricket is this?
What is a dichotomous key ?The term term dichotomous key has to do with the identification of a species based on its characteristics.
The question that can be answered by a dichotomous key is the question; Which species of cricket is this?
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Sheets composed of two layers of amphipathic molecules arranged with the hydrophilic groups on the surface and the hydrophobic groups buried in the center that form in water are called A) micelles. B) liposomes. C) vacuoles. D) bilayer membranes. E) none of the above
Answer:
D) bilayer membranes
Explanation:
Two lipidic bilayers compose the cell membrane. There are also proteins and glucans incrusted in between. Lipids are amphipathic molecules with hydrophilic heads -negatively charged phosphate group- and hydrophobic tails. Lipids are arranged with their hydrophilic polar heads facing the exterior and the interior of the cells, while their hydrophobic tails are against each other, constituting the internal part of the membrane. Membranes are fluid, which means that the composing molecules can move through them.
Lipids can easily change places with other neighboring lipids by lateral diffusion in the same layer. This is passive diffusion, which means that it does not need energy to happen.
Lipids can also diffuse transversally to the other layer but not as easily as lateral diffusion. Jumps between monolayers are infrequent as the lipidic polar heads meet the fatty acid barrier.
There are also other lipidic movements as rotational diffusion that imply the rotation of the molecule.
Explain the role played by the pancreas as exocrine gland during the breakdown of food in the digestive system
Answer:
Explanation+ Vị trí: Nằm trước sụn giáp của thanh quản, nặng khoảng 20-25g
- Cấu tạo: Ở ngoài là các tế bào tiết, bên trong là nang tuyến. tiết ra hoocmôn là Tirôxin trong thành phần có I ốt
+ Vai trò: Hoocmon tiroxin ( TH) có vai trò quan trọng trong quá trình trao đổi chất và chuyển hoá vật chất và năng lượng trong tế bào.
- Tuyến giáp còn tiết ra hoocmôn Canxitônin cùng với hoocmôn của tuyến cận giáp tham gia điều hòa canxi và phốtpho trong máu.
* Ý nghĩa của cuộc vận động toàn dân dùng muối iôt:
Khi thiếu muối iốt trong khẩu phần ăn hàng ngày, tuyến giáp hoạt động yếu, hoocmôn tirôxin không tiết ra, tuyến yên sẽ tiết nhiều hoocmôn TSH thúc đẩy tuyến giáp tăng cường hoạt động gây phì đại tuyến làm thành bướu cổ. trẻ em bị bệnh sẽ chậm lớn, trí não kém phát triển ; người lớn hoạt động thần kinh giảm sút, trí nhớ kém.
:
Look at the branching tree diagram below.
A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right with the following traits Four limbs, Amniotic egg, Fur, Shearing teeth, and Retractable claws. There is one vertical line between each of the consecutive five dots. The lines are labeled from left to right as Amphibians, Reptiles, Marsupials, Dogs, Cats.
Which group of organisms evolved after dogs?
Only cats
Only marsupials
Both cats and marsupials
Both amphibians and reptiles
Answer:
both cats and marsupials
Answer: Both Amphibians and Reptiles
Explanation: I took the test and got it, so.....
A scientist lives near a wind farm and is wondering about the environmental effects of the wind turbines. They ________ that the turbines make a sound like faint airplane engines and also that there are far fewer meadowlarks living near the windfarm than lived there were before the windfarm was built.
Answer:
Due to sound, population is decrease.
Explanation:
Due to noise of the wind turbine, there is decrease in population of meadowlarks in that region which is the only adverse effect of wind turbine. This wind turbine produces clean energy and produces no pollution like energy produce from burning of coal. This migration of meadowlarks can imbalance the ecosystem that has a great effect on the surrounding area.
What is the difference between sediments deposited in outwash and sediments deposited in moraines?
1. Sediments in the outwash are larger.
2. Sediments in the outwash are sorted
3. Sediments in the outwash are more angular
4. Sediments in the outwash are older.
Answer:
2. Sediments in the outwash are sorted
The difference between sediments deposited in outwash and sediments deposited in moraines is that-Sediments in the outwash are sorted. Therefore, the correct option is 2.
What is the sediment of outwash and moraines?Outwash is the sediment that is carried away from a glacier by meltwater and deposited in streams and rivers. This sediment is typically well-sorted, which means that particles are relatively uniform in size, shape, and composition.
Moraines are piles of unsorted sediment that are left behind by a glacier as it retreats. This sediment is typically a mix of different particle sizes, shapes, and compositions.
The glacier's movement is not strong enough to sort the sediment of moraines, so it remains unsorted. Therefore, the correct option is 2.
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The purpose of Mendel's experiments with dihybrid crosses was to determine
whether:
A. an F2 generation could be produced from the Fi offspring.
B. one of two traits could be transformed by DNA.
O c. one trait would affect how another is inherited.
D. traits are controlled by more than one gene.
Answer:
C. one trait would affect how another is inherited
Explanation:
Prior to the industrial revolution in the mid-1800s, a species of moth had light-colored wings speckled with small black spots. This coloration camouflaged the moths resting on the birch trees growing in their native habitat, since birch bark has similar coloring. In the early 1900s, this changed as dark soot produced by industrial pollution coated birch trees such that the trees lost their speckled coloring. Years later, it was observed that the moths of this species had changed from being light and speckled to being solid black. Which is the most plausible reason for this change
Answer:
The dark colored moths were due to a genetic mutation, and were more than likely present before the Industrial Revolution. Their fitness was low because predators could easily see them on the light-colored trees. They would be eaten before they could reproduce and pass on their genetic mutation. After the trees became darkened by soot, the darker colored moths now had the survival advantage, able to "hide" from predators. The lighter colored moths became more visible to predators, and the advantage shifted. Now, the light colored moths were more visible to predators, were eaten, and didn't have the chance to reproduce. The darker moths with the mutation had the survival advantage, blending in with the soot-covered trees, and were able to reproduce at higher rates, passing the mutation on to later generations.
Why do grasshoppers blend with the grass or bush?
En el hombre el color negro de los ojos “A” domina sobre el color azul “a” Una pareja en la que el hombre tiene los ojos negros y la mujer ojos azules tienen dos hijos, uno de ellos de ojos negros y el otro de ojos azules. Averiguar:
a) El genotipo del padre.
b) Realizar el cruzamiento.
c) Porcentaje genotípico de los hijos.
El enunciado hace referencia a un caso de herencia monogénica y dominancia completa para el rasgo 'color de ojos', donde el padre es heterocigota y la madre es homo-cigota recesivo.
Las respuestas a estas preguntas son:
a) Genotipo del padre: Aa (ojos negros)
b) Cruzamiento: Aa (padre) x aa (madre)
c) Frecuencias genotípicas esperadas: 1/2 Aa; 1/2 aa
En genética, dominancia completa se refiere al proceso de herencia en la cual un individuo heterocigota, es decir, el individuo que presenta dos alelos diferentes para el mismo gen, presenta el mismo fenotipo que un individuo homo-cigota para el alelo dominante (el alelo dominante es aquel que enmascara la expresión del alelo recesivo en individuos heterocigotas).
En este caso, el carácter 'color de ojos' presenta un patrón de herencia monogénica, donde el alelo 'A' dominante codifica para el rasgo fenotípico ojos negros, mientras que el alelo 'a' recesivo codifica para el rasgo fenotípico ojos azules.
En el ejemplo, la pareja tuvo progenie en la cual uno de los hijos presenta el rasgo recesivo ojos claros, y por lo tanto el padre debe ser heterocigota y poseer un alelo recesivo 'a'; mientras que la madre expresa el fenotipo recesivo y por lo tanto su genotipo es 'aa'. En consecuencia, el cruzamiento de un padre heterozigota 'Aa' con una madre homo-cigota recesivo 'aa' producirá una descendencia con una frecuencia genotípica esperada de 1/2 (50%) de hijos con ojos 'color negro' de genotipo Aa y 1/2 (50%) de hijos con ojos 'color celelste' de genotipo aa >>
Cruzamiento: Aa (padre) x aa (madre)
Gametos padre: 1/2 A; 1/2 a
Gametos madre: 100% a
Cuadro de Punett (combinaciones gaméticas):
A a
a Aa aa
a Aa aa
En consecuencia, este cruzamiento producirá 50% individuos ojos color negro (genotipo Aa) y 50% individuos con ojos color celelste (genotipo aa)
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describe in detail how enzymes function using pectinase as an example
Answer:
Pectinase is an enzyme that breaks down pectin, a polysaccharide found in plant cell walls. Therefore, pectinase enzymes are commonly used in processes involving the degradation of plant materials, such as speeding up the extraction of fruit juice from fruit, including apples and sapota
Place the steps shown below in the correct order.
2.3.1.5.4
2.1.3.4.5
04.1.3.5.2
1.3.4.5.2
2.4.3.1.5
Answer:
option 2. 2.1.3.4.5
Explanation:
This is the accurate answer... that is the correct steps of mitosis
How does the Gulf Stream affect London?
O
A. It moves warm water north from the Gulf of Mexico during the winter, keeping the temperature constant year round.
0
B. The moving water causes lower air pressure which holds less moisture and reduces the precipitation that London
receives.
C. It moves warm water north from the Gulf of Mexico, making London warmer than it should be at its latitude.
D. It moves cool water north from the Gulf of Mexico, making London colder than it should be at its latitude.
Answer:
The Gulf Stream affects London because C. It moves warm water north from the Gulf of Mexico, making London warmer than it should be at its latitude.
Explanation:
If it weren't for the Gulf Stream, London would have the same climate as Canada rather than New York. This is why latitude is not the only factor for an area's average temperature throughout a certain time of a year.
Genetic Code
Project: Asking Questions about the Genetic Code
Active
Instructions
Click the links to open the resources below. These resources will help you complete the assignment. Once you have created your
file(s) and are ready to upload your assignment, click the Add Files button below and select each file from your desktop or network
folder. Upload each file separately.
Answer:
Following are the steps to the given points:
Explanation:
The instructor has described the current task upload process.The teacher helped children with all resources necessary again for the task.Every learner needs to create a document to upload a project and then select a task from the folder.To add a file, a learner should click the add-on button.Which statement is most accurate about alternation of generations?
A. It involves changing the total number of chromosomes in a plant cell.
B. It refers to the haploid and diploid phases of the plant life cycle.
C. It refers to the processes of meiosis and fertilization.
D. It involves only some of the seedless vascular plants.
Answer:
I think no b is the ans ok
Which of the following animals has a solitary lifestyle ? A.sika deer B.elephant C. zebra D.rhino
Answer:
A sika deer
my ans is right or wrong
Answer: A: Sika Deer
Explanation: Adult males are solitary for most of the time and will band together sometimes.
which of the prey's cells are most likely affected by the poison
Answer:
Muscle cells are most likely affected by the poison.
Why the leading and lagging strand of DNA synthesize through different mechanism?What factor determine these differences
Answer:
ناسحتصس حساب سكسوسشت كمسنصو م٩سس
how many animals has 8leg
Answer:
It seems arachnids are the only animals with 8 legs. Octopuses may appear to have 8 legs, but 6 of them are actually arms and therefore do not count.
Explanation:
Arthropods include such animals as insects, spiders, ticks, centipedes,millipedes, crayfish, lobsters, mites, and scorpions. One class of arthropodsis the arachnids which include spiders, scorpions, and mites. Spiders have two main body parts and eight legs. Insects make up another class of arthropods.
Which of the following statements is TRUE?
A.Introns are the parts of mRNA that are translated into protein.
B.Introns do not have any specific function,
C.Human genes have fewer introns than genes of other organisms.
D.Introns are not excised during post transcriptional modification
Answer:
A. introns are the parts of mRNA that are translated into protein.
Explanation:
i hope it helps you
The DNA stands for deoxyribose nucleic acid, it has all the information required for the proper functioning of the human body.
The correct answer is B
The process of the formation of protein from the mRNA is called translation. it requires:-
RibosometRNAmRNAThe mRNA has the introns and the exons in it. Exons are the coding part of the DNA while the introns are the non-coding part and it does not have any specific functions.
Hence, the correct option is B that is Introns do not have any specific function.
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In many parts of the world, the average age of reproductive maturity is increasing as humans move from urban to rural environments. Suppose that the current average age of first reproduction is 15 years old in India and 20 years old in France. How would a 5-year increase in the average age of reproduction in both countries be expected to affect the per capita birth rate, and would this effect be greater in France or in India
Answer:
Increase in France.
Explanation:
A 5-year increase in the average age of reproduction in both countries i.e. France and India, it will greatly affected the per capita birth rate of both countries but higher in France because the average age of reproduction is higher in France as compared to India. The average age of first reproduction is 15 years old in India and 20 years old in France but with the increase of 5 years, the average age of first reproduction is 20 years old in India and 25 years old in France.
Which best describes a difference between transcription and DNA
replication?
Answer:
DNA replication involves synthesis of DNA molecules, while transcription is a process that involves synthesis of RNA molecules. In both processes, DNA acts as template and provides information for synthesis of new daughter DNA or RNA strand.
Explanation:
What is the correct structure of ATP? A. Ribose sugar, Adenine base, 3 Phosphate groups B. Triglyceride head, Ribose sugar, 3 fatty acids C. Ribose sugar, Phosphate group, Nitrogen Base D. Deoxy Ribsose sugar, Adenine base, 3 Phosphate groups
Answer:
The correct structure of ATP is
A. Ribose sugar, Adenine base, 3 Phosphate groups
Explanation:
The structure of ATP is a nucleotide, consisting of a nitrogenous base (adenine), a ribose sugar, and 3 serially bonded phosphate groups.
A functional corpus luteum should be found on the ______ day of a woman's menstrual cycle.
Question 24 options:
20th
10th
5th
1st
Answer:
it should be on 5th day I could be wrong
Explanation:
I don't have no explanation
