1.How did robert hooke contribute to cell theory?
2.How did roberty hooke contribute to germ theoty of disease?
3. .How did anton van leeuwenhoek contribute to cell theory?
4.How did anton van leeuwenhoek contribute to germ theoty of disease?
Answers
2. D. Robert Koch developed a way to prove that a specific microbe caused a particular disease. Matthias Jakob Schleiden suggested that ALL plants are made of cells.
3. Anton van Leeuwenhoek is another scientist who saw these cells soon after Hooke did. He made use of a microscope containing improved lenses that could magnify objects almost 300-fold, or 270x. ... He also found for the first time the sperm cells of animals and humans.
4. Antonie van Leeuwenhoek used single-lens microscopes, which he made, to make the first observations of bacteria and protozoa. His extensive research on the growth of small animals such as fleas, mussels, and eels helped disprove the theory of spontaneous generation of life.
Answer:
1. While observing cork through his microscope, Hooke saw tiny boxlike cavities, which he illustrated and described as cells.
2. D. Robert Koch developed a way to prove that a specific microbe caused a particular disease. Matthias Jakob Schleiden suggested that ALL plants are made of cells.
3. Anton van Leeuwenhoek is another scientist who saw these cells soon after Hooke did. He made use of a microscope containing improved lenses that could magnify objects almost 300-fold, or 270x. ... He also found for the first time the sperm cells of animals and humans.
4. Antonie van Leeuwenhoek used single-lens microscopes, which he made, to make the first observations of bacteria and protozoa. His extensive research on the growth of small animals such as fleas, mussels, and eels helped disprove the theory of spontaneous generation of life.
Explanation:
Related Questions
Are sharks and dolphins homologous or analogous?
Answers
Answer:
analogous I think
Explanation:
Which diagram correctly portrays the direction of the prevailing winds in each latitude band? (look at the pictures)
A.
E.
B.
C.
D.
Answers
Option C and E are the diagram which correctly portrays the direction of the prevailing winds in each latitude band
what is latitude?Latitude and longitude are two most important terms which are the coordinates that, together, tells exactly location of an object on the surface of the Earth.
Latitude tells the position of the object or anything between the North Pole and the South Pole where equator is zero degrees, the North Pole is 90 degrees North, and the South Pole is 90 degrees .
Parallels called as latitude lines which run across the Earth from east to west at a constant latitude, for example would be the equator, which is at zero degrees of latitude
Latitude is major indicator of navigation because the path of the sun is different depending on the object's latitude, so it varies based on the time of year.
For more details latitude, visit
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Can you help me plzzzz
Answers
Answer:
im not sure but i think its A
Explanation:
What is the difference between an endoskeleton and a exoskeleton? What types of animals have each?
Answers
Answer:
an endoskeleton is a skeleton on the inside of a living creature. look at endo like enter, its on the inside! an exoskeleton is on the outside of a living creature. think of exo as exit, its on the outside! animals with endoskeletons are like dogs, cats, fish, and raccoons. animals with exoskeletons are like spiders, ants, crabs, and snails.
please give brainliest :)
*by my profile its actually not biology cause it didn'*t have science subject*
Explain how crustal deformation builds land forms.
A. When two tectonic plates start to push into each other they can rise up and build mountains, or sink under and create deep valleys.
B. When wind and rain slowly wear away rock, they leave behind new looking land forms.
C. When sediments are laid down over vast areas the forces involved create rock over a very long period of time.
D. When two tectonic plates slide away from each other the inner liquid layer of the mantle comes to the surface as lava and creates new islands.
Answers
Answer:
A. When two tectonic plates start to push into each other they can rise up and build mountains, or sink under and create deep valleys.
Explanation:
It is true
How is information passed between neurons in the body?
A. through impulses
B. through motor neurons
C. through interneurons
D. through sensory neurons
Answers
Answer:
The place where the axon of one neuron meets the dendrite of another is called a synapse. Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. Neurotransmitters bind to the membrane of the dendrite. The binding allows the nerve impulse to travel through the receiving neuron.
Explanation:
Answer:
D. sensory neurons
An egret lives near cattle and eats insects stirred up by the cattle's grazing.
a. Neither
b. Commensalism
Answers
One benefits and other is neither harmed or benefits
Imagine that you could dive deep into the Atlantic Ocean where the South American Plate and African Plates meet at a plate boundary.
Make a prediction: What do you think you would see at the plate boundary? Would you see the mantle? Why or why not?
Answers
Answer:
No
Explanation:
It is a divergent boundary but you will not see the mantle because the water will soften the rock in the mantle.
Please fill out this super hard chart
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Small vertebrates may reach full growth within: A one year B one month C several years D one week
Answers
Answer:
B, one month
Explanation:
It really depends on what kind of Small vertebrates are in question, frogs take about 12 weeks for birds it takes about a month.
The hemoglobin of sickle cell anemia:
1. is oxygen rich
2. can carry less oxygen and more carbon dioxide
3. is normal
4. differs from the normal protein by one amino acid
Answers
Answer:
2. Can carry less oxygen and more carbon dioxide.
Explanation:
Sickle cell anemia damages and inhibits hemoglobin in red blood cells reducing how much oxygen they can carry.
During a chemical reaction, 25g of a solid is reacted with 15g of a liquid. The reaction bubbles and produces a lot of gas. After the reaction is over a scientist weighs the solution and finds that it has a mass of 35g. What is the mass of the gas that was produced?
A. 0g
B. 5g
C. 20g
D. 40g
Answers
Answer:
20
Explanation:
i think
Hope this helped and have a nice day : )
In a cell, a part of the DNA codes for a protein is damaged.
Which statement describes this situation?
1) the cell has the information but does not have the machinery to build the protein
2) the cell has the information but cannot carry it out of the nucleus
3) the cell has the information, but molecules that will make up the protein cannot enter the nucleus
4) the cell lacks the information to build the protein
Answers
Answer:
The correct answer is number 3)
Explanation:
The best answer gets brainliest
Please help me answer these two questions
Why do you think certain cell types look the way they do? What do you think the relationship is between a cell’s structure and its function?
Please no links, thank you
Answers
If i’m the best mark with crown please!
Answer:
i think they look like that so the prisoners are see able and cant do any thing to escape.because the guards are walking by twenty four seven
Explanation:
The picture below shows what type of energy?
A. Potential
B. Radiant
C. Thermal
D. Kinetic
Answers
(sweat, fast motion, in the sun, hot temp etc..)
hope this helps
Answer:
Thermal
Explanation:
50 POINTS! Pls, I need help. I will give brainliest if you tell me the answer and explain WHY you think so. I'm supposed to research the type of relationship between zebras and antelopes, but I can't find anything on the internet. What's the relationship between zebras and antelopes?
Mutaulism
Commensalism
Parasitism
Competition
Predation
Answers
Answer:
Another reason is that Zebras and Antelope love the open African savannas – in comparison to Kudus or other antelopes that prefer the thicker bush. Being out in the open obviously makes these two antelope species very vulnerable – therefore they are teaming up and are best buddies.
Explanation:
What are the different worm phylums? Describe the differences between the three and give examples for each.
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Help please,, it’s the second part to my previous question
Answers
Answer:
Another factor can be photosynthesis.
Explanation:
During photosynthesis, plants would give off some oxygen as a waste product. The carbon dioxide would then move from the air into the leaves of the plants through tiny openings in the plant's leaves. Oxygen moves out of the plant's leaf through the same openings.
Info: I ALMOST HAVE 200 QUESTIONS ANSWERED!
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Which of the following statements is true?
Options:
A. Gene flow evens out genetic differences between populations.
B. Genetic drift increases the genetic differences between populations.
C. Natural selection, mutation, and genetic drift are random events.
D. The bottleneck effect increases the genetic diversity of a population.
Answers
Answer:
Natural selection, mutation, and genetic drift are random events.
Explanation:
A mechanism of evolution in which the frequencies of alleles of a population change with generations because of sampling error is known as genetic drift. It takes place in all the populations of non-infinite size, however, its influences are strongest in small populations.
Hope this helps :)
hope this helps you out .
Which two fields make up electromagnetic waves?
Answers
Answer:
All electromagnetic fields (EM waves) consist of two component fields, electric fields (E fields) and magnetic fields (H fields). E fields and H fields are companions and together make up the total EM field. Where one is, so is the other
Explanation:
Your welcome ! Let me know if you need a better explanation.
Does the plant cell or animal cell have a larger vacuole?
Answers
Answer:
Plant cell
Explanation:
The plant has the largest vacuole than animal cells because in plant cells the larger central vacuole performs two functions, one is to store water and the other is to help the plant remain upright.
Answer: The plant has the largest vacuole than animal cells
Explanation: In plant cells the larger central vacuole performs two functions. I hope this helps :)
What are echinoderms? What type of symmetry do they have?
Answers
Answer:
Echinoderms evolved from animals with bilateral symmetry. Although adult echinoderms possess pentaradial, or five-sided, symmetry, echinoderm larvae are ciliated, free-swimming organisms that organize in bilateral symmetry which makes them look like embryonic chordates.
Hop you have a great day :)
Explanation:
Answer:
Echinoderm is any variety of invertebrate marine animals belonging to the phylum Echinodermata
Echinoderms evolved from animals with bilateral symmetry
Explanation:
I hope this helped :)
Which step to preparing a pomegranate is shown in the photograph?
a.Cut off the crown and the opposite end of the pomegranate.
c.Use a colander to drain and slightly rinse the seeds.
b.Using a sharp knife, score the skin lengthwise.
d.Using your fingers, and keeping the pomegranate submerged, divide the seeds from the rind and from the skin.
Answers
Answer:
Option d :Using your fingers, and keeping the pomegranate submerged, divide the seeds from the rind and from the skin
Info: Sorry, designs are down the bot was infiltrated
Two ways in which the original bodies of a fossil have been preserved: trapped in _____ or _____.
Answers
Answer:
molds and casts
Explanation:
Tell me a tertiary consumer that lives in streams or rivers. Tertiary consumer is an animal that eats other animals. this is how it will be:
producers --> primary consumers --> second consumers --> tertiary consumers.
This is a major grade, please help
Answers
Answer:
l don't know l just forgot
what evidence have you discovered to explain how organs are organized in the body? Pls, I need this right now answer!!!
Answers
Why does the moon appear to change its shape as seen from earth?
Answers
Different parts of the sun lit moon become visible as the moon revolves around earth
This happens because as the moon orbits earth the sun will project light towards it and the reason it seems to glow is because of the reflected light since the moon is white it reflects more light. Think of it as a day and night cycle except it’s on the moon when it becomes night on earth the part of earth facing towards the sun will be lit aka day/morning/afternoon etc
The part of the earth facing away will be dark aka night/midnight/etc.
A beryllium atom contains 4 protons, 4 neutrons and 4 electrons. What is the atomic number of beryllium?
Answers
Answer:
Beryllium's atomic number is 4
Explanation:
Reason
Beryllium has 4 protons, 4 neutrons, and 4 electrons.This makes it a nuetral atom meaning that it contains an equal amount of protons and electronsThis means that beryllium has a atomic number of 4Answer:
the atomic number 4
Explanation:
How would an animal feel after they hibernate?
A:Tired
B:Fat
C:Hungry
D:Warm
Please don’t do links and please try YOUR best I won’t be angry if u get it wrong at least u tried ur best thank you
Answers
Answer: Hungry
Explanation:
They've just slept for months, they haven't eaten
When its central nervous system sounds the alarm, a hibernator starts to shiver.
I’m guessing C...
This back-and-forth is exhausting, and hibernators do it with little to no food and water.
When spiders die, does it affect their growth?
Answers
Answer:It is well known that age influences organism mobility. This was demonstrated in vertebrates (such as mammals and birds) but has been less studied in invertebrates with the exception of Drosophila and the nematode Caenorhabditis elegans. Here we studied the influence of age on the mobility of the orb-weaving spider Zygiella x-notata during web construction. The orb-web is a good model because it has a characteristic geometrical structure and video tracking can be used to easily follow the spider’s movements during web building. We investigated the influence of age (specifically chronological age, life span, and time till death) on different parameters of spider mobility during the construction of the capture spiral (distance traveled, duration of construction, spider velocity, spider movement, and spider inactivity) with a generalized linear model (GLM) procedure adjusted for the spider mass. The results showed that neither chronological age, nor life span affected the mobility parameters. However, when the time till death decreased, there was a decrease in the distance traveled, the duration of the construction of the capture spiral, and the spider movement. The spider velocity and the time of inactivity were not affected. These results could be correlated with a decrease in the length of the silky thread deposited for the construction of the capture spiral. Spiders with a shorter time till death built smaller web using less silk. Thus, our study suggests strongly that time till death affects spider mobility during web construction but not the chronological age and thus may be a good indicator of senescence.
Explanation:
