Answer:
They have much higher power of resolution.as compared to light microscope.
Why does Pakistan experience frequent earthquakes?
A It does not experience earthquakes.
B. It lies on a convergent collision plate boundary between India and Eurasia.
C. It is located near many volcanoes and the pressure from the magma buildups causes earthquakes.
D. It lies on a divergent plate boundary between Eurasia and the Middle East.
B is the answer for this question
What releases oxygen into the atmosphere?
A. Iron-bearing rocks
O B. All living things
O C. Animals
th, D. Plants
S
Messages in your brain are transmitted by
Oa) electrons
Ob) protons
Oc) photons
Od) neurons
Answer:
neurons
Explanation:
Messages in the brain are transmitted by neurons
Neurons are used to transmit the messages to brain. The correct option is d.
What are neurons?Neurons also widely recognized as neurons or nerve cells are the basic units of the brain and nervous system, charge of receiving sensory input from the outside world.
Thys also trying to send motor commands to our muscles, and morphing and relaying electrical signals at every step somewhere between.
Neurons are in charge of transporting information throughout the human body. They help organize all of life's necessary functions by using electrical and chemical signals.
Glial cells and neurons are 2 kinds of prominent brain cells. While neurons are the most numerous in the brain, glial cells outnumber neurons in various areas.
Thus, the correct option is d.
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Which of the following statements support(s) the theory of the endosymbiotic origin of chloroplasts?
Chloroplasts have their own DNA, separate from the DNA in the nucleus.
They contain their own ribosomes to translate and make proteins.
They self-replicate and reproduce on their own.
They don't have similarities to photosynthetic prokaryotes.
I only
I and II only
I,II, and III
I, II, and IV
Answer:
C
Explanation:
According to the endosymbiotic idea, a few eukaryotic cells' organelles were previously prokaryotic microorganisms. Chloroplasts and mitochondria divide by binary fission. Therefore, option (C) is correct.
What is Endosymbiotic Theory ?According to the endosymbiotic theory, eukaryote cell organelles like chloroplasts and mitochondria descended from separate bacteria that eventually developed symbiotic relationships with other cells.
Both mitochondria and chloroplasts have circular, single-stranded DNA in addition to not having histones. Prokaryotes are the only organisms that have single-stranded, circular DNA. They contain their own ribosomes to translate and make proteins. These qualities would enable the mitochondria and chloroplasts to thrive on their own, supporting the endosymbiosis theory.
Therefore, option (C) supports the theory of the endosymbiotic origin of chloroplasts.
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predict what happen to the human and the plants if the transport system are affected
I think we'll be scared and panicked and some people will die of overthinking
Name TWO disorders that may occur within this body system and discuss cause/diagnosis/treatment
Help plz
Answer:
Cancer and Arthritis
Explanation:
Some causes of cancer include smoking, obesity, and lack of nutrition. Cancer is diagnosed using a biopsy. A biopsy is a procedure in which the doctor removes a sample of tissue. A pathologist looks at the tissue under a microscope and runs other tests to see if the tissue is cancer. Some treatments for cancer include Chemotherapy, surgery, Radiation therapy, and bone marrow transplant.
The most common cause of arthritis is usually if your family has a history of arhritis. It is usually diagnosed with an x-ray or a blood test. Treatment includes Painkillers, physical therapy, and exercise.
Describe the life cycle
of mosquito and cockroach
Answer:
the cockroach life cycle is comprised of three developmental phases, the egg, nymph and the adult stage. Most cockroaches are oviparous — their young grow in eggs outside of the mother's body. ... These nymphs will feed and go through a series of moultings over a period of one year as they develop into adults
The description of life cycle of mosquito and cockroach is that the cockroach life cycle has been comprised of three developmental phases, the egg, nymph and the adult stage. Most cockroaches are oviparous it means they lay eggs and their young ones grow in the eggs outside the mother's body. These nymphs will be feed and go through a series of the moultings over a period of one year as they develop into adults.
What is oviparous?Oviparous is the animals that lay eggs as their young ones and Most cockroaches are oviparous it means they lay eggs and their young ones grow in the eggs outside the mother's body. These nymphs will be feed and go through a series of the moultings over a period of one year as they develop into adults.
Genetic mutation, crossing over during meiosis, polypoidy is an example of a cause of natural variation to the mechanism of natural selection. Variation shown in many ways such as physical appearance, metabolism, reproduction, fertility behavior, learning and mental ability, such variation is called as natural variation.
Therefore, The description of life cycle of mosquito and cockroach is that the cockroach life cycle has been comprised of three developmental phases, the egg, nymph and the adult stage. Most cockroaches are oviparous it means they lay eggs and their young ones grow in the eggs outside the mother's body. These nymphs will be feed and go through a series of the moultings over a period of one year as they develop into adults.
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ASAP
If your blood becomes too diluted, what will happen to the red blood cells?
A. They become turgid.
B. They undergo lysis.
C. They undergo crenation.
D. They absorb some of the ions to balance the concentration.
Answer:
The red blood cells will burst or rupture when it is diluted and it will be one transparent and visible. ... Because water is an hypotonic solution, water from outside of the cell to the inside making the cells to continue to swell up and rupture ,a phenomenon known as haemylosis.
Answer: B
Explanation:
ITS the obvious one
Question 3
Some globular proteins are water soluble, while all fibrous/membrane proteins are water insoluble.
Which of the following statements BEST explains the reason for these differences?
A
Fibrous proteins have a large number of hydrogen bonds between the amino acids in the polypeptide chains that stabilize their structures, preventing solubility in water. The globular proteins that are water-soluble do not have as many hydrogen bonds between the amino acids in their peptide chains, allowing water solubility.
B
Fibrous proteins are configured in a way that exposes the polar side chains of the amino acids on the surface of the protein, preventing solubility in water. The globular proteins that are water soluble have nonpolar side chains on the surface of the protein, allowing water solubility.
C
Some globular proteins are configured in a way that exposes the polar groups of the amino acids on the surface of the protein, allowing water solubility. Fibrous proteins have nonpolar side chains on the surface of the protein, preventing water solubility.
D
Some globular proteins are composed of more than one polypeptide chain that weakly interacts with one another, allowing water solubility. Fibrous proteins are composed of only one polypeptide chain that tightly folds, preventing water solubility.
Globular proteins are spherical proteins which are water soluble and forms colloid in water.
The best statement which will explain the reason for difference in globular protein and fibrous proteins is statement C.
C. Some globular proteins are configured in a way that exposes the polar groups of the amino acids in the surface of the protein, allowing water solubility.
Fibrous proteins have non polar side chains on the surface of the proteins, preventing water solubility.
Globular proteins are water soluble. Fibrous proteins are not soluble in water.
Amino acids chain prevents folding up so that the chain is not broken and it remains in elongated form. The correct answer is C.
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is when a system is in motion but is balanced because it experiences no net change,
A. Dynamic equilibrium
OB. A convection current
C. Static equilibrium
D. Co-evolution
Answer:
i think A
Explanation:
what is photosynthesis?
Answer:
Photosynthesis is the process by which plants prepare food using water, sunlight, chlorophyll and carbon dioxide
Answer:
It is the process in which green plants use sunlight to make there own food .
Explanation:
I HOPE YOUR DAY GOES GREAT.
Which phrase describes a feature of groundwater?
Answer:
feeds rivers
Explanation:
Answer:
A
Explanation:
Each piece of DNA called a
carries
the code for
human characteristic. The whole human code
contains about
sections or
Answer:
what is the question
Explanation:
Answer two questions in detail and get brainliest!
1.Explain what makes a scientific experiment reliable. Be sure to include at least three reasons to support your answer.
2.During research, why is it important to use peer reviewed evidence when collecting background information during a scientific investigation?
Answer:
1:When a scientist repeats an experiment with a different group of people or a different batch of the same chemicals and get very similar results then those results are said to be reliable.Reliability is measured by a percentage if you get exactly the same results every
time then they are 100% reliable.
2.The peer reviewer determines whether the introduction provides sufficient background information on the research topic, and ensures that the research question and hypothesis are clearly identifiable.
Explanation:I really hope this helped you in any way (pls tell me if I did anything wrong)
state te type of cell devision of cross section tips of onion root.
Plant roots are more easily able to absorb ammonium that has been produced from ________.
A. nitrification
B. nitrogen fixation
Before moving a microscope, changing slides, or putting it away you must always ____. This prevents damage to the scope.
Answer:
You must always use two hands.
Explanation:
Using two hands provides more stability when carrying the microscope. So that would lower the chances of damaging the scope. Yw >:)
What is a similarity between the temperate climate zone and polar climate zone?
A. Both climate zones get less than 100 cm of precipitation in a year.
B. Both climate zones have average yearly temperature of around 25°C.
C. The polar and temperate climate zones have hot and dry summers.
D. They have hot summers and cold winters because they are close to the ocean.
Answer:
may be option c or b I think but I am not sure
Which OF THESE is a reason why a bird 'sings'?
a. To mark out its territory to others of its own species
b. To frighten other birds that may attack / eat it
c. To attract its food like worms and insects
d. To wake up other birds and animals
Quick
What are the 2 most abundant elements found in the Earth's crust?
A. Iron and nickel
B. Carbon and silicon
C. Oxygen and silicon
D. Carbon and hydrogen
Explanation:
carbon and hydrogen
hope it's helpful and have a great day
Which of the following describes the most likely way in which two water molecules will interact?
A. A covalent bond will form between the hydrogen of one water molecule and the oxygen of the other water molecule.
B. An ionic bond will form between the oxygens in each water molecule.
C. A metallic bond will form between the hydrogens in each water molecule.
D. A hydrogen bond will form between the hydrogen atom of one water molecule and the oxygen atom of the other water molecule.
Answer:
D. A hydrogen bond will form between the hydrogen atom of one water molecule and the oxygen atom of the other water molecule.
Explanation:
The most likely way in which two water molecules will interact is a hydrogen bond will form between the hydrogen atom of one water molecule and the oxygen atom of the other water molecule. Therefore, option (D) is the required answer.
Which is not an example of an abiotic factor?
A. sunlight
B. wind
C. fungi
D. water from a stream
Answer:
C. fungi
Explanation:
Sunlight, water, and wind are considered abiotic factors.
Cells have what type of bilayer that is not
soluble in water?
A. phospholipid
B. protein
C. cellulose
Answer:
P
Explanation:
Phospholipod is type of bilayer
Cells have phospholipid type of bi-layer that is not soluble in water.
What is cells ?The cells are basic structural unit of living organism.The cells have mainly three parts: cell membrane, the nucleus and cytoplasm.The cells are responsible for the all process of lifeWhy phospholipid is not solunle in water?The lipid containig a phosphate group in its molecule is called phospholipid.The cell membrane is made of phospholipid which is not soluble in water.The phospholipids has hydrophilic head contains phosphate group and two hydrophobic tails which drive from fatty acids and joined by alcohol.This fatty acid is made of ten or more carbon atoms and having low density . So, it float on the surface of the water when mixed with water.learn about cells ,
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what are the different experiments and variables you can use to test your hypothesis
Answer:
the most common variables found in a science experiment include dependent, independent, and controlled.
Explanation:
escribe las clases de tejido parenquimatoso y la función de cada uno
Answer:Parénquima vascular: protege los tejidos conductores (xilema y floema) de la planta. Parénquima de relleno: ocupa el resto del espacio, con el fin de "rellenar". La principal característica es que las células son más o menos isodiamétricas (poseen el mismo diámetro).
Explanation:
Explain the process of finding the volume of irregular solid in laboratory with diagram
Answer:
If the object has an irregular shape , the volume can be measured using a displacement can . The displacement can is filled with water above a narrow spout and allowed to drain until the water is level with the spout. As the irregular object is lowered into the displacement can, the water level rises.
Explanation:
What type of evolutionary adaptations did plants acquire to allow them to grow in areas that were not directly on a water source? A. Angiosperms evolved flowers, which could catch rainwater, reducing the dependence on ground water sources. B. Vascular seedless plants evolved specific structures to transport and hold fluids, reducing dependence on water sources. C. Gymnosperms evolved seeds, which they could alter to need less water. D. Non vascular plants evolved chloroplasts to allow them to get energy from the sun, instead of relying on water for energy.
Answer:
B
Explanation:
In the given scenario, vascular seedless plants evolved specific structures to transport and hold fluids, reducing dependence on water sources. The correct option is B.
What is vascular plants?A plant that basically have a specialized conducting system which entails xylem and phloem, the tracheophyte is referred to as vascular plants.
Vascular plants are widely recognized as tracheophytes. Vascular tissues are xylem and phloem for conduction of water and food respectively.
They allow plants to grow in height in the air without even drying out. Vascular plants also have roots, stems, and leaves.
Seedless vascular plants are the ones which have vascular tissue but though do not produce seeds as well as flowers.
In such vascular plants, for instance, ferns and horsetails, the plants multiplies using haploid and unicellular spores on the place of seeds.
Thus, the correct option is B.
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why the study biology
An injury to the spinal cord in which section of vertebrae could cause tetraplegia?
Answer:
The nerves exiting the vertebrae in the neck area or cervical segments are referred to as C1 through C8. These nerve control signals to the neck, arms, hands, and internal organs. Injuries to these areas result in tetraplegia.
Answer:
cervical
Explanation:
“Most people with tetraplegia have significant paralysis below the neck, and many are completely unable to move. This form of paralysis is typically the product of damage high in the spinal cord, usually in the cervical spine between C1-C7. The higher the injury is, the more extensive the damage will be.”
The new Hazard Communication Standards provide teachers and students the right to __________ chemical hazards.
The new Hazard Communication Standards provide teachers and students the right to manipulate chemical hazards.
Chemical hazards are non-biological substances that can cause damage to health. These are used in different enterprises, companies, school, universities and laboratories for different purposes such as cleaning, disinfection, scientific experiments, among others. When handling them, employees are exposed to them and are vulnerable to harm from these chemicals.
There are many types of hazardous chemicals to be wary of, such as:
Carcinogens NeurotoxinsAcids Systemic toxins Asmogens Silica dust LeadIn the workplace, exposure to these substances represents a real occupational hazard and there must be regulations to ensure that they are safe to handle.
The Occupational Safety and Health Administration (OSHA) is the agency of the U.S. Department of Labor which determined the Hazard Communication Standards. This is a document with the necessary information to study the hazards of the chemical substances used by different employees in the companies, so that they are aware of the dangers of these substances. These employees have the right to know exactly what compounds they handle and the risks involved in their use as well as the precautions and care to be taken.
Therefore, by having these safety standards in place in schools and universities, teachers and students have the possibility and the right to handle chemical hazards safely to be able to conduct the class normally and learn what is necessary.
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