Answer:
Robert Hooke
I hope this helps you :)
Roobert Hooke first scientist to observe cells using a microscope.
Thus, Microscope: a device that magnifies small objects, giving the user a close-up view of minuscule structures at a scale suitable for observation and analysis.
Even though optical microscopes are the focus of this article, an image can also be magnified by a variety of different wave types, such as acoustic, X-ray, or electron beams, and is then captured using direct or digital imaging, or a combination of these techniques.
The microscope can produce a static image, similar to a traditional scanning electron microscope, or a dynamic image, like traditional optical devices.
Thus, Roobert Hooke first scientist to observe cells using a microscope.
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no What cell type has no membrane-bound organelles, has a single unbound chromosome, and is very small?
A Eukaryotic cell
B Prokaryotic cell
C Animal cell
D Plant cell
Answer: Option B
Explanation:
Both animal and plant cells are eukaryotic cells. Membrane bound organelles are a characteristic feature of eukaryotic cells. Prokaryotic cells however do not posses membrane bound organelles and this is the answer to this question.
Both animal and plant cells are eukaryotic cells. Membrane bound organelles are a characteristic feature of eukaryotic cells.
What are Membrane bound Organelles?Prokaryotic cells however do not posses membrane bound organelles.
The nucleus is frequently referred to as the eukaryotic cell's command center. This is so because it has the knowledge required to produce proteins.
Because every component of the cell need proteins to function, the nucleus regulates the actions of the other organelles by housing the genetic instructions for making proteins.
Therefore, Both animal and plant cells are eukaryotic cells. Membrane bound organelles are a characteristic feature of eukaryotic cells.
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16. ) A ___ is the structure that contains the DNA of the cell.
a.) centrosome
b.) chromosome
c.) centromere
d.) vacuole
e.) centriole
Answer:
the closest answer is b.
Explanation:
The nucleus contains most of the DNA in a cell and this DNA is called the chromosomal DNA.
Each chromosome is constructed from DNA that has been tightly wound around proteins called histones numerous times to support its structure. Thus, option B is correct.
What is the role of chromosomes?DNA, the cell's genetic material, is kept in the nucleus. In the nucleus, DNA is often found wrapped up and linked to a variety of histone proteins in a structure called chromatin that is loosely contained.
Chromatin coils tightly and condenses to produce chromosomes just before a cell divides. A DNA molecule called a chromosome is where an organism's genetic code is located.
When a cell is not dividing, chromosomes cannot be seen in the nucleus, not even under a microscope.
Therefore, a chromosome is the structure that contains the DNA of the cell.
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what's the difference between budding and binary fission in reproduction of organisms
Answer:
Budding is found in eukaryotes. The main difference between binary fission and budding is that duringbinary fission, parent organism isdivided into two daughter organismsby evenly separating the cytoplasm whereas, during budding, a neworganism is formed from the existingorganism by sprouting out.
Which of the following is a chemical property of iron?
A. Iron corrodes in moist air.
B. Iron is soft when pure.
C. Iron melts at 1808 K.
D. Iron's density = 7.874 g/cm3
Answer:
A
Explanation:
Iron corrodes in moist air. When iron gets exposed to air, it reacts with oxygen molecules to form rust. Rust degrades the quality of iron. Therefore, methods of protection from rusting like, Barf's protection, Sacrificial protection etc. are carried out.
Iron corrodes in moist air is a chemical property of iron. Hence the correct option is A.
A chemical property of iron is its ability to corrode in moist air. Corrosion is a chemical reaction that occurs when iron reacts with oxygen and moisture in the air, resulting in the formation of iron oxide, commonly known as rust. This chemical property of iron is due to its reactivity with oxygen and can lead to the degradation and weakening of iron-based materials over time.
Corrosion is a chemical process that involves the reaction of a metal with its environment, typically in the presence of moisture or oxygen. In the case of iron, when it comes into contact with moist air, it undergoes a chemical reaction known as oxidation. This reaction causes the formation of iron oxide, commonly known as rust.
The corrosion process begins when iron reacts with oxygen in the air, a process called oxidation. This reaction leads to the formation of iron(III) oxide, which is commonly seen as the reddish-brown coating known as rust. The presence of moisture accelerates the corrosion process by providing the necessary medium for the reaction to occur.
Hence the correct option is A.
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what goes in light independent
Answer:
- Captures energy from sunlight
- Takes place within and across the membrane of the thylakoids.
Can someone help me please?!❤️
Answer: Oxygen produced by photosynthesis.
Explanation: Breathing things produce carbon dioxide while plants produce oxygen.
Answer:
You are right it is D.
Explanation:
You got it.
please help me if you can right answers please
What sport did he pompete in?
Tinker
Answer:
basketball
Explanation:
Select the correct answer.
Which condition is required for viruses to reproduce?
A.
They must enter another virus structure.
B.
They must enter the cell of another organism.
C.
They must come in contact with water.
D.
They must encounter a virus with genetic material different from their own.
They must enter the cell of another organism so they can insert their RNA into the hosts DNA and reproduce. They are rather parasitic in that regard.
Answer:
B. They must enter the cell of another organism.
Explanation:
I got it right on Plato.
Are microscopic and macroscopic ecosystems affected by limiting factors differently? Explain.
Answer:
No.
Explanation:
No, the microscopic and macroscopic ecosystems can't affected by limiting factors differently because both required the same factors for their survival and growth. The factors required by every organism in both microscopic and macroscopic ecosystems such as food, water, habitat, and reproduction. If these factors are limited then the population of the organisms will be lower. So both affected the same due to limiting factors.
3. What was the first shoe he designed
Tinker
Answer:
Designs the Air Jordan 3, the first of his sneaker designs with Michael Jordan. The sneaker’s design and its popularity arguably saves Nike’s relationship with Jordan and keeps him from jumping to rivals Adidas.
hi can someone pls help me
Answer:
B
Explanation:
Sometimes when a virus enters a cell, it becomes
dormant for a while. Why might this make it difficult for a doctor to diagnose a viral infection?
Answer:
But sometimes it can linger for weeks or months after you've been sick with a viral infection, such as the flu. This is known as post-viral fatigue. You may not know that you have it because your are asymptomatic.
Explanation:
Which best describes the following impacts: water storage, clean energy, and flood prevention?
Answer: Positive impacts of dams on society
Explanation: I just took the quiz ;)
Answer:
D. positive impacts of dams on society
Explanation:
E2020 other dude was right
how many neutrons does oxygen have?
Answer:
Oxygen has eight neutrons
Answer:
they have 8 neutrons
Explanation:
A student wants to create a liquid volcano. The student observes bubbles in the soft drink prior to opening it.
The student first proceeds to open the soft drink bottle and place it on the floor.
Next, the student drops candy tablets into the drink using a rolled piece of paper so that the tablets are able to fall into the drink continuously. The student notices a very powerful reaction as the drink fizzes and starts to bubble.
In this scenario, what would be the catalyst?
Answer:
b
Explanation:
Answer:
The candy tablets being added to the drink. (A)
Explanation:
edge 2020
Which of the following is a function of the cell membrane?
Answer first option
Explanation:
What cell do mutations occur in that can be passed to offspring?
A. Blood cell
B. Nerve cell
C. Brain cell
D. Egg cell
Answer:
D
Explanation:
its D because i saw it in class
Answer:
D. Egg cell
Explanation:
Mutations can only occur in reproductive cells like Eggs Or Sperm
pleaseee helppp!!!! please and thxxx:)
Answer:
Prokaryotic Cells are single celled, Do not have a nucleus and do not have organelles (mitochondria etc). Their DNA are stored in the cytoplasm. Eukaryotic cells have a nucleus that contains DNA. They have organelles and exist in more than one types of organisms.
Explanation: Plz give me a brainliest, thanks
what is the difference between the hydrogen bonds holding the nitrogenous bases together in the DNA structure ?
Answer:
Explanation:
Chemical structures of the five nitrogenous bases are shown below. ... Adenine and guanine are purine bases found in both DNA and RNA. ... Nucleosides have slightly different names than their nitrogenous base parents, and depend upon
do you think you can help me?
Answer:
solid
Explanation:
Answer:
solid
Explanation:
because ice is waters solid form
What would happen to an ecosystem if the biomass of primary consumers was higher than the biomass of producers?
Answer:
It would be destroyed soon...!
Explanation:
b. Why is there a huge demand of professionals in the field of agriculture
Answer:
There is an increase in demand for higher quality and quantity of food and other products.
Explanation:
There is an increase in demand for higher quality and quantity of food and other products. So, there is a huge requirement for technological innovation. Investment is needed in research and development to develop crops that are pesticide-free, resistant to disease, and able to face various weather conditions. Vertical farming and carbon-capture technology can be used to meet growing world food demands.
What is the answer for 25
Answer:
When a catalyst is present in a biochemical reaction, what is not expected is that the reaction requires more energy than normal (option b).
Explanation:
A catalyst is a substance used to facilitate a chemical reaction, decreasing the reaction time. Unlike a reagent, the catalyst retains the same amount of mass at the end of the reaction.
In a biochemical reaction, the use of a catalyst not only accelerates the reaction, but also decreases the amount of energy required by the process. An example of a biological catalyst is enzymes, specialized proteins that facilitate metabolic reactions.
The other options can be expected with the use of a catalyst, due to:
a. One of the functions of the catalyst is to decrease the amount of energy needed in a reaction.
c. Catalysts are substrate specific.
d. Catalysts work in a specific pH range.
4. How do the finches on the different Galapagos Islands differ from each other?
Explain why.
True or False? Toxins accumulate in the tissue of organisms
false I think or it's true
Explanation:
i don't think this is helpful srry
Which part of an atom has no charge? *
proton
neutron
electron
nucleus
A(n) ___ reaction feels hot to the touch since energy is being released and a(n) __ reaction feels cold to the touch since energy is being absorbed
Answer:
b a
Explanation:
i did this test in school
How might the descruction of rainforests affect the balance of gases in Earth's atmosphere?
Answer:
If you destroy rainforests, there will be less oxygen in the air and more carbon dioxide. Trees and plants produce oxygen so that is why.
Explanation:
Answer:
a
Explanation:
Help with #11 please!!
Answer:
what ecosystem are yall talking about