The cell theory was constructed by _____. Robert Hook Schleiden and Schwann Carolus Linnaeus

Answers

Answer 1

the cell theory was constructed by schleiden and schwann.

Answer 2

Answer:

Schleiden and Schwann

Explanation:

The cell theory is the now universally believed theory that all living being are formed by cells, and the first cell theory was proposed by Theodor Shchwann and Mathias Jakob Schleiden, back in 1830, the first cell was ever observed in a microscope by Robert Hook in the 16th century but it wouldn´t be untill 2 centuries later that the cell theory started to take form.

Related Questions

A change in the frequency of alleles from one generation to the next is the definition of:

Answers

From a modern genetic perspective, this is defined as evolution.

Final answer:

The change in the frequency of alleles from one generation to the next is the definition of evolution in population genetics. It refers to a change in the proportion of a specific allele within a population, relative to all other alleles of that gene.

Explanation:

The change in the frequency of alleles from one generation to the next is the definition of evolution in terms of population genetics. It refers to a change in the proportion of a specific allele within a population, relative to all other alleles of that gene. For example, in the ABO blood type system, the frequency of the IA allele can change over time, leading to evolution in the population. This concept is important in understanding how genetic change drives phenotypic change and adaptation in populations.

Why is the clear area surrounding an antibiotic disk called the zone of inhibition?

Answers

a qualitative method used clinically to measure antibiotic resistance and industrially to test the ability of solids and textiles to inhibit microbial growth.

Answer:

No bacteria grows in surrounding area of antibiotic disk, thus it is known as zone of inhibition

Explanation:

The area surrounding an antibiotic disk is called the zone of inhibition because in this region bacteria & its colonies are unable to grow. Due to the anti microbial effect produced by bacteria, there is no visible sign of presence of bacteria in the inhibition region.

Also, the zone of inhibition also depicts susceptibility of bacteria towards the effect of antibiotics.

All living things are made of one or more cells. Here are two types of cells: an animal cell and a plant cell. The plant cell is angular compared to the animal cell. What plant cell structure gives the cell its angular shape?

Answers

The cell wall is what gives plant cells their shape. The cell wall, not to be confused with the cell membrane, is a rigid structure made up of long cellulose fibers, branching hemicellulose fibers, and pectin. The fluid pressure inside the cell also contributes somewhat to their shape.

The cell wall made up of cellulose is the cell structure which is responsible for giving the cell its angular shape. This is the outermost layer of plant cell which is impermeable in nature. Thus, the correct option is B.

What are Plant cells?

The cell wall in the plant cell is what gives the plant cells their specific shape. The cell wall, should not to be confused with the cell membrane. Cell wall is a rigid structure which is made up of long cellulose fibers, branching hemicellulose fibers, and pectin molecules. The fluid pressure inside the plant cell also contributes to the shape and structure of plant cell.

Animal cells have the outermost layer of cell membrane or plasma membrane whereas plant cells have the rigid outermost layer i.e., cell wall. This is the reason for angular shape of plant cell.

Therefore, the correct option is B.

Learn more about Plant cell here:

https://brainly.com/question/1493437

#SPJ6

Your question is incomplete, most probably the complete question is:

A) vacuole

B) cell wall

C) chloroplast

D) plasma membrane

The genes for sex-linked traits are carried on either the X or Y chromosome. Duchenne muscular dystrophy (DMD) is a recessive, sex-linked disease that is carried on the X chromosome. A woman with DMD and a man without the disease have a child. Which statement best describes the likelihood of the disease passing to their child?

a. There is a 100 percent chance that their daughter will have the disease.
b. There is a 50 percent chance that their son will have the disease.
c. There is a 50 percent chance that their daughter will have the disease.
d. There is a 100 percent chance that their son will have the disease.

Answers

There is a 50% probability that the child will be a boy. If this is the case, he will inherit the X chromosome from his mother and the Y chromosome from his father. Since the woman has DMD, the boy will certainly inherit the disease, since he only has one X chromosome and it carries the disease. We know that both of the mother's X chromosomes carry the disease because since it is recessive, both of her chromosomes must have it in order for her to have it.

There is also a 50% probability that the child is girl. If this is the case, she will inherit a normal X chromosome from her father and the disease-carrying X chromosome from her mother. Since the disease is recessive, she will not be affected by the disease, since she has one healthy X chromosome and one disease-carrying one.

If the child is a girl, there is a 0% chance that she will have the disease (although she will be a carrier).

If the child is a boy, there is a 100% chance that he will inherit the disease.

The answer is D)

Answer:

Explanation:

Patients' negative expectations about the outcome of a surgical procedure can increase their postoperative experience of pain. this best illustrates the importance of

Answers

This best illustrates the importance of TOP DOWN PROCESSING.
Top down processing refers to the way in which our brain make use of information that has been brought to the brain by the sensory system. It is a cognitive process that is initiated by human thoughts, which then flow down to lower level functions such as human sense organs.

The statement provided best illustrates the importance of psychological factors, specifically the impact of patients' expectations on their postoperative experience of pain.

This highlights the role of psychological factors in influencing physical outcomes and is often referred to as the mind-body connection or psychosocial influences on health.

Research has shown that patients who have negative expectations or anticipate more pain before a surgical procedure are more likely to report higher levels of postoperative pain. This phenomenon can be attributed to various psychological processes, including the influence of beliefs, attitudes, and emotions on the perception and interpretation of pain.

The importance of psychological factors in healthcare is increasingly recognized, as they can significantly affect patient outcomes, treatment adherence, recovery, and overall well-being. Healthcare professionals now understand the significance of addressing patients' psychological needs and promoting a positive mindset, as it can contribute to better pain management, improved recovery, and enhanced overall patient satisfaction.

To learn more about psychological, here

brainly.com/question/31197260

#SPJ6

What is the term for the portion of the earth's atmosphere, hydrosphere, and geosphere where life is found?

Answers

Answer chooses will help .

The study of the stomach and intestines and their diseases is called:

Answers

I believe the answer is:

Gastroenterology

I hope this answer was helpful!! :)

One unit of platelets raises the platelet count which amount

Answers

One unit of platelets will raise the platelet count by 24,000 - 35,000 uL (microlitres).

Oxygen enters the ocean only at the surface, from __________ and ______________.
a. photosynthesis, the atmosphere
b. volcanic eruptions, meteorites
c. photosynthesis, respiration
d. respiration, photosynthesis
e. respiration, rainfall

Answers

Oxygen enters the ocean from photosynthesis and the atmosphere.

The atmosphere contains oxygen molecules that when those molecules enter in contact with the ocean water, they get dissolved in the water.
The other way is through photosynthesis. Just like in the land, there are photosynthetically active plants and bacteria in the ocean, that converts carbon dioxide and water, and releases oxygen.

Oxygen enters the ocean only at the surface, from photosynthesis and the atmosphere.

The question pertains to how oxygen enters the ocean. Oxygen enters the ocean mainly from two sources: photosynthesis and the direct exchange with the atmosphere. Photosynthesizing organisms, such as algae and cyanobacteria, which are also referred to as phytoplankton, play a crucial role in this process by converting carbon dioxide and water into oxygen and organic compounds. Additionally, the oxygen from the atmosphere dissolves directly into the surface of the ocean through physical mixing processes.

The correct answer to the student's question is "(a). photosynthesis, the atmosphere." Photosynthesis by marine organisms adds oxygen to the ocean waters, while the atmosphere exchanges gases with the ocean's surface, allowing more oxygen to dissolve into the water.

The respiratory system controls the:

Answers

Lungs, which take in oxygen and expel carbon dioxide.

The respiratory system is responsible for taking in oxygen and carbon dioxide. It is the breathing system, our lungs.

The short-term effects of confiding painful feelings may be arousal, but in the long term, talking about painful stress-producing experiences calms us by

Answers

The best way to calm a person when he or she is talking about painful stress producing experiences is by having his or her activity to be reduced in which is under the limbic system as this will allow the person to relax and be calm.

The average time to death from starvation in a fruit fly is about 20 hours. selecting for increased starvation resistance in fruit flies:
a. can produce populations in which the average time to death from starvation is 160 hours.
b. has no effect because it is too complex a physiological process, dependent upon the effects of too many genes.
c. has little effect because constant mutation reduces starvation resistance, counteracting any benefits from selection.
d. has no effect because it is not a trait that influences fruit fly fitness.
e. can double this, at which point the genetic variation for this trait is exhausted.

Answers

The correct option is A
When selecting for a particular trait in a living organism, it means that a scientist wants to improve the quality of that trait. In the question given above, the scientist want to improve the capacity of the fruit fly to stay alive longer when starving. In this case, the scientist will select for a gene that is resistant to starvation so that the fruit fly can stay alive for more than 20 hours when it is hungry. The capacity to stay alive for a longer time when hungry will improve the capacity of the fruit fly to survive.

The _________ is the organelle which is sometimes referred to as the powerhouse of the cell due to the fact that it produces atp most efficiently.

Answers

"The mitochondria is the organelle which is sometimes referred to as the powerhouse of the cell.."

Which division classifies green moss growing on a stone building?

Answers

BRYOPHYTA is the division that classifies green moss growing on a stone building.
Bryophytes are primitive types of plants that do not have a well diffrentiated plant body and vascular system. It is also called as amphibians of plant kingdom because these can grow in water as well as on land.

Which type of repair is a backup for the dna polymerase proofreading function?

Answers

Base excision repair is a backup for the DNA polymerase proofreading function.

Base excision repair (BER) in biochemistry and genetics refers to the cellular mechanism during the cell cycle that repair damaged DNA and it is mainly responsible for removing small, non-helix-distorting base lesions from the genome.

Mismatch repair is a backup for the DNA polymerase proofreading function.

Mismatch repair takes place immediately after the completion of the DNA synthesis and its job is to detect, remove and replace small insertions that were undetected during proofreading.

Further Explanation

The enzymes that are responsible for the creation of DNA in cells are known as DNA polymerase. When DNA replication takes place, the DNA polymerase can check to know which bases are added. The DNA polymerase can discover if bases are impaired. This process is what is called Proofreading.

During DNA synthesis, the DNA polymerase can discover incorrect nucleotides and replace them accordingly before the continuation of the DNA replication.

Although many errors that occur during DNA synthesis are corrected by the polymerase, some errors can still go on undetected. However, some of these insertions can be detected and corrected through mismatch repair.

Mismatch repair is the process that involves detecting and corrections of erroneous insertion that can occur after DNA replication. DNA mismatch repair can as well detect and repair damages to the DNA after New DNA has been created. The major function of the Mismatch repair is to detect, removed and replaced bases that are mispaired.

Therefore, Mismatch repair is a backup for the DNA polymerase proofreading function.

LEARN MORE:

Which type of repair is a backup for the dna polymerase proofreading function? https://brainly.com/question/6576138The initial mechanism for repairing nucleotide errors in DNA is https://brainly.com/question/13049930

KEYWORDS:

proofreading functionbackupmismatch repairdna polymerasemispaired bases

True or false? low doses of cns depressants can cause sedative effects and relaxation.

Answers

I think it’s false, but I’m not 100% sure.

During which phase of the autopsy would swabs from orifices be taken?
A. external examination
B. internal examination

Answers

A) External examination is the answer. Hope this helps!:)

Answer: A. External examination

Explanation:

An autopsy is an examination which involves the detail analysis of the internal as well as external condition of the dead body.

In external examination body color, injuries, injection marks, tattoo marks and swabs of orifices are taken to determine the cause of death.

In internal examination the dissection of all the cavities of the body is done to determine the cause of death.

The diagram shows the general structure of a lipid, which consists of two main parts

Answers

"fatty acid carboxyl group." The diagram shows the general structure of a lipid, which consists of two main parts. The part that is circled is the fatty acid carboxyl group.

The part that you want in the fatty whatever the other awesome person who answered said

A nurse preparing a section of skin for an injection is an example of __________. a nurse preparing a section of skin for an injection is an example of __________. sanitization sterilization degerming disinfection

Answers

Hello There!

A nurse preparing a section of skin for an injection is an example of degerming.

This is because, as the word suggests it removes germs from the area.

Hope This Helps You!
Good Luck :)

- Hannah ❤

Marta is a pregnant woman suffering from severe iodine deficiency. as a result of the deficiency, she has a high risk of giving birth to a child with _____. ariboflavinosis

Answers

The child is at risk of cretinism. This is a disease marked by stunted physical and mental growth, mainly due to a lack of thyroid production on the part of the mother. A diet lacking in iodine (as iodide) can also be a culprit for hypothyroidism. The person may suffer from varying degrees of mental and physical impairment, depending on the level (and severity) of the hypothyroidism.

How is the structure, function and position of the crayfish nerve cord different from the rat's spinal cord?

Answers

In the crayfish's nerve cord, it is the combination of the two nerves that lead from the brain to form the ventral nerve cord which runs down the abdomen. It is important for sending signals from the ganglion to the appendages and muscles. While the rat's spinal cord it runs along the dorsal or back, rather than the front, and it is important for transferring neural signals between the brain and for the rest of the body.

Some individuals have a mutated recessive allele and a homozygous individual is resistant to HIV infection and AIDS. Some populations have a high frequency of the mutant allele. What inference can be made about the mutant allele?
a. heterozygous individuals must be genetically advance even if they are not resistant to hiv
b. the mutated allele must have developed and been acquired by many people before exposure to the virus .
c. the mutated allele must not be inherited by offspring or disease would be close to eradication
d. being a homozygous is a advantage for mutated allele , while being heterozygous is genetic advantage

Answers

Correct answer: B.
We know that some populations have a high frequency of the mutant allele, which indicates that there was already a wide spreading of it so that when the disease attacked the population, cause the necessary selection to promote the high frequency of the mutant allele. If the mutant allele appeared only when the disease struck, the mutant allele frequency wouldn't be high because this is a process that takes time.

We can't be sure that A. is true, we'd need more information as to whether there is any advantage in having at least one allele. We do know that it is a recessive allele, therefore, most likely, there isn't any advantage.
C. - we can't foresee whether the disease would come to a closure. The virus could evolve alongside with the selection and this mutated allele would not be of any use.
There is only a genetic advantage - D. - in being heterozygous if there is an advantage having only one mutated allele, which we don't know.

Answer:

b. the mutated allele must have developed and been acquired by many people before exposure to the virus .

Explanation:

What form of energy does a plant store when light is transformed during photosynthesis?

Answers

During photosynthesis,plants store their energy in the form of starch, which is a complex carbohydrate that can be broken down into a simple carbohydrate (glucose) for the plant to use for energy. Plant cells store starch in storage organelles like all cells do. (vacuoles).

What dietary components are most effective at raising muscle glycogen concentrations?

Answers

It should be carbohydrates. It's the first choice for store energy and it can be stored as glycogen.

When you see gas bubbling up out of a swamp or Marsh what can you suspect is in the water

Answers

Methane produced by bacteria.

a monster!!!! lol just kidding, air (mostly methane) is trapped under the muck, yes muck, and finally pushes itself to the surface.

hope i helped!!!!!!!!!! :D

An individual with (naturally) curly hair and an individual with (naturally) straight hair mate, all of their offspring have (naturally) wavy hair. what is the relationship between the alleles for hair texture?

Answers

is this school work ? can you tell me so i can tell you professical or common

One difference between carbohydrates and lipids is that A) Lipids will dissolve in water but not carbohydrates. B) Carbohydrates will dissolve in water but not lipids. C) Carbohydrates contain hydrogen, carbon, and oxygen and lipids do not. Eliminate D) Lipids contain hydrogen, carbon, and oxygen and carbohydrates do not.

Answers

The difference between Carbohydrates (sugars) and Lipids: 1) sugars dissolve in water lipids don't. 2) sugars are made-up of subunits that form large polymers and lipids are not and don't form polymers.

The difference between carbohydrates and lipid is that carbohydrates can dissolve in water but lipids cannot.

Further Explanation:

Carbohydrate are biomolecules, contain mainly three atom hydrogen,carbon and oxygen. These are polar molecule which has polar hydroxyl group and makes a hydrogen bond with water.

Carbohydrates mainly of four type-

• Monosaccharides

• Disaccharides

• Polysaccharides

• Oligosaccharides

Functions of carbohydrates

• Major source of energy

• Store glycogen for fasting

• Water-soluble

• Necessary for proper function of CNS

• Help in the oxidation of fat

Lipids are biomolecule, they also contain three atom carbon(C) hydrogen(H) oxygen(O) linked to glycerol.These are the long sequence of carbon to carbon with hydrogen bonds.Number of hydrogen is low and carbon number is high. Electronegativity between carbon and oxygen is high.Thus, they form lipid a non-polar long chain and they are insoluble in water.

Types of Lipids

• Simple

i. Wax

ii. Oil

iii. Fats

• Complex

i. Glycolipid

ii. Phospholipid

iii. Proteolipids

Function of Lipid

• Store energy

• Precursor for many hormones

• Metabolic fuel

• Part of the cell membrane

• Help in digestion.

Thus, carbohydrates are polar molecule and soluble in water. Lipids are non-polar molecule which is insoluble in water.

Learn more:

1. Learn more about fatty acid: https://brainly.com/question/1386856

2. Learn more about carbohydrate monomer https://brainly.com/question/6947177

3. Learn more about peptide bond https://brainly.com/question/4657391

Answer Details:

Grade: High School

Subject: Biology

Chapter: Biomolecules

Keywords:

Monomer,carbohydrates,lipid,water,soluble,wax,phospholipids,simple,complex,fattyacid, Monosaccharides,Disaccharides,Polysaccharides,Oligosaccharides,carbon,hydrogen,oxygen,oil,fats,glycolipis,proteolipids.

A brush called a filbert is best used for ________.

Answers

it is best used BLENDING.
filbert brush is a kind of paint brush commonly used in artworks.
It is a brush with a flat but oval head shape.
comparing to regular flat brushes, it is a lot more easier to blends colors.
it is even suitable for painting either thin or thick strokes.
Even though it is normally harder to control, but it gives fluent and smooth brush strokes.

Blending. The filbert is oval shaped and has medium to long brush hair. The long handle and softly rounded edge make it a common choice for edge and color blending. Natural hair is the preferred choice because the hairs hold together when they are wet.

The following seed phenotypes showed up in a generation of plants. Which alleles are recessive? blue round = 75 white round = 28 blue wrinkled = 24 white wrinkled = 8 blue and round white and round blue and wrinkled white and wrinkled

Answers

Answer:

blue and wrinkled are recessive.

Explanation:

Based on the given seed phenotypes, the alleles that are both recessive include: D. white and wrinkled.

What is a recessive trait?

A recessive trait can be defined as a masked allele in the genotype which can only expressed by a living organism when two (2) of the same masked alleles are inherited.

In Genetics, the phenotypic ratio between the offspring of two (2) heterozygous parents within the F2 generation is equal to 9:3:3:1.

Given the following seed phenotypes:

Blue round = 75 = 75/9 ≈ (9 × 8).White round = 28 = 28/3 ≈ (3 × 8).Blue wrinkled = 24 = 24/3 ≈ (3 × 8).White wrinkled = 8 = 8/1 ≈ (1 × 8).

Therefore, the phenotypic ratio between the offspring is close to 9:3:3:1 within the F2 generation.

Note: 1 represents the number of phenotypes with both recessive traits.

In conclusion, we can logically deduce that white and wrinkled are the alleles that are both recessive.

Read more on phenotypic ratio here: https://brainly.com/question/1450897

#SPJ9

which of the following phrases describes earth’s biodiversity best

Answers

"greater in consistently warm areas" describes Earth’s biodiversity best.

Hope this helps!

Final answer:

Biodiversity is greatest in the tropics, with a higher number of endemic species and more biodiversity hotspots. However, our knowledge of these species is low and the potential for biodiversity loss is high due to human activity.

Explanation:

Regardless of the mechanisms, it is certainly true that biodiversity is greatest in the tropics. The number of endemic species is higher in the tropics. The tropics also contain more biodiversity hotspots. At the same time, our knowledge of the species living in the tropics is lowest and because of recent, heavy human activity the potential for biodiversity loss is greatest.

Learn more about Biodiversity in the Tropics here:

https://brainly.com/question/39267943

#SPJ6

Question:

Which phrase best describes Earth’s biodiversity?

a. greater according to energy needs

b. greater toward Earth’s poles

c. greater in consistently warm areas

d. greater where temperatures are most variable

Other Questions

Which stimulus causes a responding plant to demonstrate phototropism?direction of lightintensity of lightlength of the daytime of day Josh's chicken soup recipe calls for 2 1\2 L of chicken stock. Josh makes 3 1\4 times the recipe for a family reunion. How much chicken stock does Josh use to make soup for the family reunion? Express your answer as a mixed number in the simplest form. For a given input value q, the function f outputs a value r to satisfy the following equation. 11q-4=3r-6, Write a formula for f(q) in terms of q HELP ME PLEASE I'LL PICK A BRAINLIEST!!!Write a paragraph explaining the ways in which Roman influence can be seen in our society today. Use details from the lesson and reading for support. luci cuts a board that is 3/4 yard long into pieces that are 3/8 yard long how many does she cut The SMCR model suggests that problems in communication can arise when a sender and a receiver have different A. body language. B. organizational skills. C. cultures. D. delivery styles. In a 10 m2 ecosystem, there are 20 raccoons. The population density of raccoons is _____. 2 per m2 4 per m2 10 per m2 20 per m2 Read the excerpt from the interview with E.Y. (Yip) Harburg. When I lost my possessions, I found my creativity. I felt I was being born for the first time. So for me the world became beautiful. With the Crash, I realized that the greatest fantasy of all was business. The only realistic way of making a living was versifying. Living off your imagination. Based on the excerpt, which best describes Harburgs view of the Great Depression? He has no interest in financial success for himself. He values artistic success over financial success for himself. He believes most people benefited from losing their financial stability. He regrets the fact that he gave away his money to benefit his art. Rules of thumb or short-cuts that individuals use to save time when making complex decisions are known as _____. Whats the best answer If the pressure, volume, and the number of moles of a gas are known, which is needed to calculate the universal gas constant from the ideal gas law?the temperature of the gas the molar volume of the gasthe molar mass of the gasthe partial pressure of the gas A cyclist rides his bike at a rate of 18 miles per hour. What is this rate in kilometers per hour? How many kilometers will the cyclist travel in 5 hours In your computations, assume that 1 mile is equal to 1.6 kilometers. do not round your answers what is 0.279 times 53 A student isolates an unknown bacterial sample from the bottom of a swamp area. The student discovers that this species of bacteria is able to live and grow in an oxygen-free environment, but it requires a nitrate-rich soil. Which of the following types of respiration is this species of bacteria most likely using? what is the significance of the city of makkah to early islam which of the following is a tip for taking the aspire reading test The graph below shows the price of different numbers of hats at a store:A graph is shown. The values on the x-axis are 0, 2, 4, 6, 8, 10. The values on the y-axis are 0, 13, 26, 39, 52, and 65. Points are shown on ordered pairs 0, 0 and 2, 13 and 4, 26 and 6, 39 and 8, 52. These points are connected by a line. The label on the x-axis is Number of Hats. The title on the y-axis is Price in dollars.Which equation can be used to determine p, the cost of h hats? (1 point)h = 6.50pp = 13hp = 6.50hh = 13p How to determine the function is even odd or neitherf(x)=5-3x 10. What is a developed nation? A nation working hard to increase its gross national income. A nation working hard to support its citizens and develop business. A nation that has made major social, political, and economic progress. A nation that is on track to be a world power in the near future. A dog weighs 2 pounds more than a cat. 3 cats and 4 dogs together weigh 43 pounds. How much does a dog weigh? How much does a cat weigh? Steam Workshop Downloader