A logical argument for using a transmission electron microscope (TEM) is: C. The TEM magnifies up to 2000,000X and you can see great detail including the internal structure of cells.
What is a microscope?A microscope can be defined as an optical device that is typically designed and developed to produce an enlarged (magnified) image of a minute (very small) object, in order to show all the littlest and tiniest details about the object that cannot be seen by the natural human eye.
The types of microscopes.In Science, there are different types of microscopes and these include the following:
Scanning electron microscope.Polarizing microscopeInverted microscopeCompound light microscope.Transmission electron microscope.Ideally, a magnification of about 400x to 1000x is required to see the shape of a bacterial culture. However, a transmission electron microscope (TEM) can magnify up to 2000,000X and as such you can see great detail of a bacterial culture, including the internal structure of their cells.
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A keystone species is
a central stone at the summit of an arch, locking the whole together.
a species on which other species in an ecosystem largely depend, such that if it were
removed the ecosystem would change drastically.
capable of causing extinctions of native plants and animals, reducing biodiversity
competing with native organisms for limited resources, and altering habitats.
Which one is it?
Answer:
i need to know the abcd
Explanation:
which one is it????? i cant see the multiple answers
why we need to study biology
Answer:
you learn to make more informed decisions about their own health and about significant biological issues such as genetically modified crops, the use of antibiotics, and the eradication of invasive species
If we study biology, we can understand how plants and organisms interact with each other, what are their traits, evolutionary ancestors, etc. Not to mention, it helps us be safe from dangerous animals, and allows us to understand how to prevent bacteria and viruses from entering our body.......
Thankyou :)1. Explain why most cells are, of necessity, very small.
Answer:
they need to divide when they grow beyond a certain limit.
Explanation:
they may not have not enough material to cross the membrane quick enough which will increase cellular volume. when that happens the cell must divide into smaller cells with favorable surface area or volume ratios or crease in function. hoped that helped. :)
Learning Task 5: In your notebook, transform the text below into a non-textual
information source.
Sharks and whales are a classic example of two different animals revealing
similar traits in the same environment. One of the similarities of these two
marine animals is their habitat. They both live in the vast range of depth in
their environment. They also have the same fin structure. They only have a
single tail for propulsion and because they are both large aquatic animals,
they both consume large volume of food, however, sharks hunt for their
food. Whales do not have this hunting tendency. Another difference of
sharks to whales is their class. Whales are mammals while sharks are fish
but they both live in the ocean. Also, whales have bones while sharks only
have cartilages.
Answer: The similarities between shark and whales are indicative of convergent evolution.
Explanation:
Convergent evolution can be defined as the process in which the organisms are not closely related but they evolve similar traits as a result of living in a similar kind of environment or adapting traits which enable them to perform the same ecological niches.
The similarities between shark and whale is indicative of convergent evolution as the animals are not related to each other phylogenetically but they live in the same environment this they evolve same kind of traits.
The similarities between sharks and whales represent an example of convergent evolution.
Convergent evolution refers to the evolution of similar phenotypic traits in unrelated and/or distantly related species.Convergent evolution creates analogies, i.e., different structures that may have the same function but were not present in the last common ancestor of both species. On the other hand, divergent evolution refers to the development of dissimilar phenotypic traits in closely related species as a result of evolution by natural selection, thereby leading to speciation.In convergent evolution, similar phenotypic features (traits) have evolved independently and repeatedly in each lineage in order to adapt to particular environmental conditions.In conclusion, sharks and whales are an example of convergent evolution because they are distantly related species that exhibit similar phenotypic features in the same environment.
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Which are found on the right side of the arrow in a chemical equation?
Reactants
Products
Answer:
The right side of the arrow in a chemical equation would indicate the products. Think of it like this: You REACT to stubbing your toe by spilling a glass of water, and it PRODUCES a mess, so you clean it up. The reactants affect the products, or the outcomes of an experiment—or situation.
Cell division (mitosis) is essential for life functions in complex organisms. Which of the following THREE processes does mitosis help with?
Organism Reproduction
Cellular Energy
Protein Production
Repair of Dead Cells
Response to Environment
Organism Growth
Cell Differentiation
Temperature Regulation
Answer:
Organism Growth, Repair of Dead Cells, and Cell Differentiation.
I hope this helps!
Mindful eating includes which behavior?
feeling the textures of your food
eating while watching television
O photographing every meal that you eat
O recording every calorie that you consume
Answer:
A, "feeling the textures of your food."
Explanation:
While every option does appear mindful, only A is the correct answer. The true definition of mindful eating is that you are paying undivided attention to your food and how it makes you feel. This includes the aroma, textures, and your sensual awareness. This does not involve computing calories or partaking in obsessive behaviors. Watching television while you eat would be distracting you from the experience.
name and define the states of energy
Answer:
There are two states of energy: potential energy and kinetic energy.
Potential energy is stored energy – energy that is ready to go. Potential energy can be used in combination with other terms like “gravitational potential energy,” which is the energy an object has due to height in comparison to a lower elevation.
Kinetic energy, simply put, is energy something has because of its motion.
Explanation:
What feature of double-stranded dna makes it necessary to have a leading strand and a lagging strand during replication?.
Answer:
there must be a pre-existing chain of nucleotides
Explanation:
So RNA primers are used for initiation of new DNA chains.
RNA primer is short piece of RNA, synthesised at the end of the new strand with the help of DNA specific RNA polymerase enzyme called primase and primers provide free -OH for DNA polymerase to start polymersing. leading template strand requires primer only ones. But lagging template strand requires many primers. Once primer is ready DNA Pol(III) will come & start adding deoxyribonucleotide to the -OH of primer by complementary basepairing. Two nucleotides link each other by phosphodiester bond. The daughter DNA for template is synthesised continuously, Therefore called leading strand. DNA polymeraseIII has Exonuclease activityIt can add nucleotides in the direction. Replication is discontinuous on the other template with polarity because only a short segment of DNA strand can be built in direction due to exposure of a small stretch of template at one time.
Please mark as brainlest.
Which organelle contains the hereditary information (DNA) for the cell?
Golgi body
nucleus
mitochondrion
endoplasmic reticulum
Answer:
nucleus
Explanation:
Answer:
Nucleus
Explanation:
The nucleus is a membrane-enclosed organelle found in most eukaryotic cells. The nucleus is the largest organelle in the cell and contains most of the cell's genetic information (mitochondria also contain DNA, called mitochondrial DNA, but it makes up just a small percentage of the cell's overall DNA content).
Firstly, plant cells have a cell wall that surrounds the cell membrane, whereas animal cells do not. ... These additional organelles allow plants to form an upright structure without the need for a skeleton (cell wall and central vacuole), and also allow them to produce their own food through photosynthesis (chloroplasts).
Answer:
Explanation:
This question appears incomplete. However, one of the main differences (in organelles) between plants and animal cells is the absence of cell wall and chloroplast in animal cells while both organelles are present in plant cells. The cell wall is outside of the cell membrane. The cell wall provides rigidity and support to the plant cell while the chloroplast is the cellular "machinery" for photosynthesis. The chloroplast contains the green pigment called chlorophyll which provides green plants with there colour and assist the plants in absorbing/capturing of sunlight/energy for the purpose of photosynthesis (self production of food by green plants).
Dian Fossey had no experience with primates or even how to conduct field studies and had never lived outside of America. Why was she able to be so successful at her research?
Answer:
bc of her knowledge of various species,
How do scientist know that the core is made of iron and nickel
A=Scientists have gathered samples of the core
B=Pictures of the core have been taken from satelites
C=The core produces a lot of seismic waves
D=The core is dense and produces the magnetitteid. HELP ASAP WILL MARK BRAINLY
Answer:c
Explanation:Apex
Please Help!
Q.1. Describe and explain what can be seen by using the Parkes Radio Telescope, affectionately known as “The Dish.” Be sure to explain what synchrotron radiation is.
Q.2. Why is the Murchison Radio Observatory such an ideal place to build radio telescopes? Explain.
Q.3. When Walker decides that she wants to explore beyond the Milky Way, what does she find?
Q.4. How many radio galaxies can be seen in the image that Walker shares? Describe these galaxies and what they look like in the image?
Q.5. After learning about Walker and her love of and exploration of galaxies, what questions do you still have? What do you want to know more about?
Answer:
1. The Parkes radio telescope is a gigantic measuring instrument, used to examine a wide range of radio energies from our galaxy and other parts of the universe.
2. The remote location of the MRO ensures a radio quiet operating environment but makes access to basic infrastructure like roads and power a challenge.
3. whistling plasma ducts in the Earth's ionosphere and some of the youngest and weirdest radio galaxies ever found.
4. only around 800 giants have been found.
5.
Explanation:
sorry it took long to answer
please make this the
Molten rock above ground is called
A) magma
B) metamorphic
C) sedimentary
D) lava
Answer:
D
Explanation:
Lava trust me
After a power stroke, the myosin head must detach from actin before another power stroke can occur. What causes cross bridge detachment?.
A new molecule of ATP attaches to the myosin head, causing the cross-bridge to detach is the right answer.
What is cross bridge detachment?During detachment cycle, the cross-bridge head is thought to undergo a rotation and so pull the actin filament relative to the myosin so we can conclude that a new molecule of ATP attaches to the myosin head, causing the cross-bridge to detach.
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Describe and explain the three basic cyclic reasons why the temperature of the Earth has fluctuated over time (Milankovitch Cycles). Please make sure to use complete sentences and proper grammar.
PLEASE HELPPPPP
The three basic cyclic reasons why the temperature of the Earth has fluctuated over time are Eccentricity, Obliquity and Precession.
The Milankovitch CyclesThe Milankovitch Cycles are defined as the cyclical movement related to the Earth's orbit around the sun. These cycles cause variations in the amount of solar energy reaching the Earth.
Milankovitch Cycle was developed by the Serbian mathematician called Mulutin Milankovitch.
The climatic effects of the Milankovitch Cycles include:
Eccentricity: This is defined as the shape of Earth's orbit. This cycle is the reason why the seasons are slightly different in length.Obliquity: This is defined as the angle that Earth's axis is tilted with respect to Earth's orbital plane. The greater Earth’s axial tilt angle, the more extreme our seasons are.Precession: This is defined as the direction that Earth's spin axis is pointed. Axial precession makes seasonal contrasts more extreme in one hemisphere and less extreme in the other.Learn more about earth's temperature here:
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all the characteristics of a prokaryotic cell
Answer:
Explanation:
Prokaryotes lack an organized nucleus and other membrane-bound organelles.
Prokaryotic DNA is found in a central part of the cell called the nucleoid.
The cell wall of a prokaryote acts as an extra layer of protection, helps maintain cell shape, and prevents dehydration.
________________ is the direct laying of bone into the primitive connective tissue. The membrane that occupies the place of the future bone resembles connective tissue and forms the periosteum. It is composed of fibers and granular cells in a matrix. What is the name of this process that results in compact and spongy bone formation? A) mesenchymal ossification B) endochondral ossification C) perichondrium ossification D) intramembranous ossification
Answer:
The correct answer is - option D. intramembranous ossification
Explanation:
Conversion of mesenchymal tissue into bone directly is known as intramembranous ossification. The bone formation is the process that involves the conversion of mesenchyme or primitive connective tissue from laying of bone directly. It is made up of granular cells and fibers in the matrix.
It is the formation of tissue of bone in a fetal without any template or cartilage base during fetal development.
Thus, the correct answer is - option D. intramembranous ossification
What pigment, only present in plants, makes photosynthesis possible?.
Answer:
Chlorophyll
Explanation:
the diagram below shows a strand of DNA matched to a strand of messenger RNA. what process does this diagram represent
Answer:
DNA transcription
Explanation:
In this process, DNA is transcribed to become strands of RNA, which will eventually be codified into proteins.
i hope this helps.
Where are the heart and great vessels located in the human body?.
Answer:
From the center to the left of the thorax, the heart and major vessels are placed in the mediastinum between the lungs and above the diaphragm.
Explanation: Answer above
Describe how the writers of ""Into the Air"" and ""The Wright Brothers"" show that Orville and Wilbur worked together to overcome obstacles. Cite evidence from both texts to support your answer
Answer:
creating the first plane introducing a new mode of transportation to mankind and changed the way aerodynamics works
Explanation:
The mass of an empty cylinder is 200 grams. The mass of the cylinder with the mystery liquid is 250 grams. If the volume of the mystery liquid is 100 ml, what is the density of the liquid?
Show your work
Answer:
ok,so the mass of mystery liq.+cylinder is 250g
cylinder alone is 200g
mystery liquid's mass=50g
d=m/v
50/100
=0.5g/ml
Raj takes a meteorology class and learns about the effects of air density on the weather. What affects the density of air? Explain.
Answer:
Temperature, pressure, and moisture/humidity are all factors to consider.
Warm air has a lower density and rises/becomes buoyant.
The air is less dense at higher elevations above sea level. To bring the same amount of oxygen into the lungs when running at high altitudes, you'll need to take more deep breaths.
Humidity is less dense at higher temperatures and pressures. The weight of water molecules is less than that of nitrogen and oxygen molecules. To get more moisture into the same volume of air, some of the heavier nitrogen and oxygen must be displaced.
Explanation:
The tendon that attaches the muscles of the calf to the calcaneous is the
A. I.T. Band
B. Patellar tendon
C. Achilles tendon
D. Deltoid ligament
Answer: Achilles’ tendon
Explanation:
The Achilles tendon is a tough band of fibrous tissue that connects the calf muscles to the heel bone (calcaneus). The Achilles tendon is also called the calcaneal tendon. The gastrocnemius and soleus muscles (calf muscles) unite into one band of tissue, which becomes the Achilles tendon at the low end of the calf.
Answer:
Achilles
Explanation:
Google is cool, I guess.
Location of melanocytes and tactile epithelial cells.
Answer:
The melanocytes and tactile epithelial cells (Merkel cells) are located in the stratum Basale.
Explanation:
What molecules are you exhaling this very minute?
Answer:
carbon dioxide
Explanation:
What types of energy are involved in a chemical reaction?
Activation, chemical, released energy:: is the energy required for a chemical reaction to take place, and
Absorbed, Chemical, Released energy:: is the energy associated with every substance.
Answer:
Energy Changes in Chemical Reactions
Chemical reactions often involve changes in energy due to the breaking and formation of bonds.
Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.Answer:
I think its activation energy and chemical energy
Explanation:
Where does the water cycle start?