Answer:True
Explanation: Microscopes often use a mirror to direct available light to the specimen platform, so if you don't have enough light it will be difficult to view your specimen and can cause eye strain.
Microscopes may malfunction if stored or used in a location exposed to direct sunlight. Also, direct sunlight may harm the observer's eye if it enters a microscope through the reflector.
For optical microscopes:
Light from outside is sent to the reflective mirror to illuminate the sample. Direct sunlight must be avoided. ... This inexpensive and readily available lamp, also called an incandescent lamp, is widely used in optical microscopes.
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i need help please i don’t know what it is
Answer:
It should be vacuole!
Explanation:
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fluidity of an animal cell plasma membrane is enhanced by __________.
Answer:
Cholesterol molecules
Explanation:
Several factors increase the fluidity of the plasma membrane in animal cells.
First, by creating kinks in the lipid structure, the unsaturated fatty acids in the phospholipids that make up the membrane improve fluidity. Additionally, cholesterol contributes to the preservation of membrane fluidity. As a buffer, it reduces fluidity at high temperatures and prevents solidification at low temperatures. The actual temperature also has an effect on how fluid the membrane is at higher temperatures, the phospholipids move and flow more freely. Last but not least, the ratio of different phospholipids and their saturation levels can have an effect on the fluidity of the membrane.
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Explain the difference among the three types of chemical weathering caused by water.
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explain about water cycle
Answer:
The water cycle shows the continuous movement of water within the Earth and atmosphere. ... Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Water in different phases moves through the atmosphere (transportation).
Explanation:
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what is the speed of the wave if the frequency is 4Hz and the wavelength is 2.5m?
Answer:
32 meeters/ seconds
Explanation:
Which of the following describes flat inland areas, rich and fertile due to the constant replenishing of nutrients from decomposing grasses?
Estuary
Taiga
Temperate grassland
Tropical rainforest
Answer:
Taiga ,temperate grassland
Temperate grasslands are important biomes characterized by their fertility. The correct option is C. Temperate grassland are flat inland areas, rich and fertile due to the constant replenishing of nutrients from decomposing grasses.
BiomesBiomes are defined according to the vegetation structure and the other forms of life inhabiting them.Their location is determines by the climatic condition in each regions.Temperate grassland is one of the worlds biomes.Temperate grasslandsOpen plane areas covered by herbal vegetation, with a few deciduous woody species. Grasses dominate temperate grasslands.Distributed in the northern and the southern hemispheres.
They are severely affected by fires and tornados.
Fires, droughts, and grazing by animals prevent different woody species from establishing.
Temperature and rains in these regions widely vary with seasons.
The high levels of precipitation and humidity are characteristic of the biome.
Climatic conditions drove grass species to develop large roots to establish to the ground. This characteristic helps to reduce erosion and to keep soil humidity.The soils characterizes for being unusually rich, fertile, and deep.
Temperate grassland are then flat inland areas, rich and fertile due to the constant replenishing of nutrients from decomposing grasses. Option C is correct.
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You noticed that a plant in your garden began to wilt because you forgot to water it. You water the plant. About 30 minutes later, you discover that the plant is standing again. How is this scenario related to osmosis?
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which of the following is a solid non metal a carbon b sulphur c Phosphorus d all of these
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which cellular component will be found in the widest range of organisms in the sample?
Identify the type of force that is important in forming atoms, stars and planets.
Answer: First, gravity is the force that pulls us to the surface of the Earth, keeps the planets in orbit around the Sun and causes the formation of planets, stars and galaxies. ... The Strong Nuclear Force binds the nucleus of an atom together.
Explanation:
9th grade Biology question help me please
Answer:
it has a high concentration
What is not a key fluid or molecule that excretion balances?
Nitrogenous waste
Water
Salt
Lymph
What is the order of these objects from smallest to largest?
Atom
Tissue
Molecules
Organelle
Organ system
Cell
Organ
Organism
Answer:
ATOM
MOLECULES
CELL
ORGAN
ORGANELLE
ORGAN SYSTEM
Internal forces of sources which what is exert on each other in the bodies are part of the system is 
Answer:
Internal forces are those forces which exert on each other when the bodies are part of the system. The forces acting between the atoms of molecules that keep them together are example of internal force.
Explanation:
Describe an example of a muscle contraction in a lower appendage joint and identify the bones of origin and insertion involved.
what is photosynthesis
Explanation:
It is a process by which the plants prepare glucose by using sunlight
a plant with two dominant or two recessive alleles is said to be
Answer: H0m0zygous
Explanation: Because H0m0zygous is having two identical alleles of a particular gene or genes.
PLease say this in your own words and simple
cytoplasm
ANSWER:
Answer:
the semifluid substance of a cell that is external to the nuclear membrane and internal to the cellular membrane,
Symptoms of sleep apnea include which of the following?
Answer:
All of the above
Explanation:
the video compares the key similarities and differences between mitosis and meiosis. determine which events occur in mitosis, meiosis, or in both mitosis and meiosis.
Answer:
Mitosis:
A single division occurs, separating sister chromatids
End result is two diploid cells that are genetically identical to each other and the parent cell
Meiosis:
The first division separates homologous pairs; the second division separates sister chromatids
Homologous chromosomes pair up and form chiasmata
Homologous pairs of chromosomes line up on the metaphase plate
Daughter cells contain recombinant chromosomes
End result is four haploid cells that are genetically different from each other and the parent cell
Mitosis and Meiosis:
Chromosomes duplicate during interphase
Process starts with a diploid cell
Duplicated chromosomes line up Individually on the metaphase plate in a diploid cell
Explanation:
Mitosis is the division of vegetative cells while meiosis involves the division of sex cells. Both divisions start with diploid parental cells but while the daughter cells in mitosis are also diploid, those of meiosis are haploid. This is why mitosis is referred to as equational division while meiosis is known as reductional division.
A cell that will undergo mitosis or meiosis would first have its genetic materials duplicated during interphase in addition to the synthesis of other important biochemicals such as proteins. Mitosis involves just a single division of the sister chromatids with two genetically identical daughter cells who are also clones of the parent cells resulting.
Meiosis, on the other hand, involves two divisions - the first one happens to separate homologous chromosome pairs while the second division separates sister chromatids just like in mitosis. During the early stage of meiosis, homologous chromosomes synapsed through the formation of a synaptonemal complex to form tetrads. Thereafter, synapsed chromosomes exchange chromosomal segments at a point known as chiasmata. All these happen at the prophase stage of meiosis I. The paired homologous chromosomes are then lined up at metaphase where they are engaged by the spindle fibers.
Meiosis II and mitosis are more or less the same with the chromosomes condensing at the prophase and the formation of metaphase plates at the metaphase. Sister chromatids are pulled apart and they migrate to the opposite poles at the anaphase and telophase.Explanation:
If an atom has 16 neutrons and atomic mass 31 it atomic is
Answer:
Mass number can vary due to the fact that the number of neutrons can vary. Isotopes are named for their mass numbers. So, this element has 15 protons (atomic number), 15 electrons, and 16 neutrons (mass number minus atomic number). This isotope is phosphorus-31, which has atomic number 15.
Explanation:
THe father is Rr and mother Rr. What color are the children
the most significant difference between biofuels and fossil fuels is that biofuels are:
The most significant difference between biofuels and fossil fuels is that biofuels are: produced with biomass, that is, they are processed energy resources that come from organic compounds extracted from wild or cultivated plants.
Fossil fuels (such as oil, coal, and natural gas) are those that come from the natural decomposition of organic matter.
They are called non-renewable energies because they are limited natural resources since they require an extensive period of time and specific conditions to form.
On the other hand, a biofuel is a term that is used to refer to all those fuels produced from biomass, that is, through the chemical or physical treatment of organic or plant waste.
That is, unlike fossil fuels that come from energy stored for long periods in fossil remains, biofuels come from biomass, or organic matter that constitutes all living beings on the planet.
Biomass is a renewable energy source, as its production is much faster than the formation of fossil fuels.The use of biofuels as a renewable energy source can help reduce the consumption of fossil fuels, responsible for the generation of greenhouse gas emissions.During its production, part of the carbon dioxide that could be released into the atmosphere is extracted from the biomass.
For this reason, biofuels do not contribute to the emission of greenhouse gases.
Therefore, we can conclude that the most significant difference between biofuels and fossil fuels is that biofuels are: produced with biomass.
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need an answer now
asap
Answer:
all of these words relate to human impacts on the environment
BRAINLIEST ASAP! Explain how the Hershey-Chase experiment used bacteriophages with radioactive sulfur and radioactive phosphorus to demonstrate that DNA, and not protein, is the carrier of genetic information.
Answer:
He separated the phages into radioactive sulfur-containing protein ghosts and radioactive phosphorus-containing DNA. They found that the radioactive sulfur protein ghosts could attach to bacterial membranes while the radioactive phosphorus DNA could not. Hope this helps!
Answer:
He separated the phages into radioactive sulfur-containing protein ghosts and radioactive phosphorus-containing DNA. They found that the radioactive sulfur protein ghosts could attach to bacterial membranes while the radioactive phosphorus DNA could not
Explanation:
i need help please can anyone help?
Answer:
cell membrane
Explanation:
the cell membrane allows things to move in and out of the cell, allowing too much water into the cell is a problem with the cell membrane
6. Which of the following is NOT a factor of partial melting? A. addition of volatiles B. decrease in pressure C. an increase in pressure D. an increase in temperature
letter b.
Answer: its B. Decrease in pressure
Explanation:
Partial melt denotes that only a portion of the substance is melted, with the other portion remaining solid. Due to its reduced density, the partial melt rises and climbs through the crust.
Answer: D. an increase in temperature
What is the name for a rise in temperature?The extremely quick rise in the average surface temperature of the Earth over the past century is known as global warming, and it is mostly caused by greenhouse gases that are emitted when people burn fossil fuels.
Highlights. Since 1880, the temperature of the Earth has risen by 0.14° F (0.08° C) per decade, but since 1981, the pace of warming has increased by more than twice that, to 0.32° F (0.18° C) per decade. According to NOAA's temperature data, 2021 was the sixth-warmest year ever.
The kinetic energy of a substance's particles rises as its temperature rises. Q. As the temperature rises, the particles' kinetic energy rises as well.
These dangers include sea level rise, which will cause coastal flooding and eroding, changes in the salinity of coastal groundwater supplies, which will cause freshwater stress, dangers to marine ecosystems, like mass coral bleaching and die-offs, and stronger tropical storms.
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A project about "How do vaccines be used to fight outbreaks?"
Answer:
Vaccines fight outbreaks by creating heard immunity. If more people are innoculated against the virus then they protect vulnerable populations from getting sick
Explanation:
Name two functions of pulp cavity
Answer:
the main functions of the pulp
are formation and nutrition of the dentin, as well as the innervation and defense of the tooth.
Dentin formation is one of the most critical roles carried out by the pulp and, as mentioned, is formed by the odontoblasts
Explanation:
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Answer:
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Explanation:
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