The statement that there must be a preexisting cell in order for a new cell to form is known as cell

Answers

Answer 1

Answer:

cells duplicate so when there is no cell it cant make any

Explanation:

Answer 2

The statement that there must be a preexisting cell in order for a new cell to form is known as cell theory.

What is cell theory?

The scientific idea that cells make up living organisms, that they are the fundamental structural and organizational unit of all species.

They all originate from previously existing cells is known as cell theory. It was first proposed in the middle of the nineteenth century.

Because cells are the building blocks of all life, cell theory is essential for our understanding of biology.

We can have single-celled organisms like yeasts and bacteria. All living things grow and develop on the basis of cell division, or the division of a cell from one to two to four.

A vital process for life is mitosis. A cell divides into two identical daughter cells after duplicating all of its components, including its chromosomes.

Thus, the statement "cell arises from pre-existing cells" comes from cell theory.

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Related Questions

Listt any four general characteristics of pisces.​

Answers

Dishonesty, caring, passionate for what they do and kind to those around them.
Me though I wouldn’t know I’m a Aries

if you look away from this sentence and focus your eyes on a distant object, the eye muscles _______ to focus images on the retinas

Answers

If you look away from this sentence and focus your eyes on a distant object, the eye muscles relax to focus images on the retinas.

Do you think that organisms of the same order will share a stronger evolutionary relationship than organisms that share only the same phylum? Explain your reasoning using the results of your investigation.

Answers

Answer:

In taxonomic, the organism is classified based on some similarities. ... But the organism with the same order should have the same phylum and class too since order is located below the phylum. That means the organism with the same order should have more similarities than the organism with the same phylum.

Taxonomical classifications are done for organisms including plants, animals, microorganisms etc. It classifies, defines and scientifically names organisms.

According to the taxonomical classification the organisms are classified based on similarities and in order of the taxonomy, the organism should have the same phylum and class.

In taxonomy, the phylum is above the order in level and the phylum will have fewer similarities compared to the organism in order or class.

The organism of the same order will have a strong evolutionary relationship as compared to the organism with the same phylum.

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Most physical characteristics are inherited. Scientists have discovered several genes that contribute to human fatness, particularly genes that regulate the production of specific ____________ , such as ____________ , which stimulates hunger, and ____________ , which reduces hunger.

Answers

Answer:

hormones; ghrelin; leptin.

Explanation:

Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.

Heredity refers to the transfer of traits (specific physical characteristics) from the parent of a living organism to her offspring through sexual reproduction or asexual production. Some examples of hereditary traits are dimples, tongue rolling, baldness, handedness, freckles, curly hair, color blindness, height, etc.

A gene can be defined as the complete set of hereditary instructions that is typically found in the deoxyribonucleic acid (DNA).

Over the years, scientists have discovered several genes that are known to contribute to human fatness (body weight), especially genes that are saddled with the responsibility of regulating the production of specific hormones, such as ghrelin, which stimulates hunger, and leptin, which reduces hunger.

how do the decisons that we make each day influence how efficiently our body operates

Answers

Answer:

Our decisions have direct impact on the operations or actions of our body.

Explanation:

The decisions that we make each day greatly influence our body and efficiently our body operates because the activities we do in daily life put pressure on our body system. If our decisions force us to do hard work so it makes our body more stronger and healthier as compared to those decisions which requires no hard work so our body is not strong enough and our body can't operates efficiently.

what is the waterfalls ​

Answers

Answer:

waterfall is a falling of a river or other body of water over a steep Rocky ledge. Shows interruption in water flow

Part 1 of 1 -
Question 9 of 10
10 Points
When DNA is copied, sometimes there are mistakes. Approximately how often does this
happen?
O A. There aren't any mistakes.
OB. 1 in a billion bases.
OC. 1 in a million bases.
OD. 1 in a trillion bases.
Reset Selection

Answers

Answer:

D. 1 in a trillion bases

Explanation:

A mutagen agent can change the genetic information of organisms increasing mutations over the natural level. Mutagens cause changes in the bases, and pairing bases, that compose DNI strands.

A mistake in the process of DNI copy during cell division might cause genetic changes in daughter cells. Defects DNI replication might be inherited if it occurs in germinal cells. But it can also cause many significant epigenetic changes.

Many of these changes can be detected on time by enzymes such as DNI polymerase. This enzyme can correct these mistakes or at least some of them, moving from 3´to 5´direction, and eliminating the mistakes.

The highly effective replication system, together with the action of enzymes, makes it rare to occur a mistake in DNI replication. Generally speaking, the mistaken rates in DNI replication are very low, meaning that only one in a trillion times occurs a mistaken DNI copy.

This is the last

What are the vestigal organs present in human body??​

Answers

Answer:

Charles Darwin listed a number of putative human vestigial features, which he termed rudimentary, in The Descent of Man (1871). These included the muscles of the ear; wisdom teeth; the appendix; the tail bone; body hair; and the semilunar fold in the corner of the eye.

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What is produced during the replacement reaction of Ba(NO3)2 and Na2SO4?

2BaNa + 2NO3SO4
2NaNO3 + BaSO4
NaNO3 + BaSO4
BaNa2 + (NO3)2SO4

Answers

Answer:

2NaNO3 + BaSO4

Explanation:

Answer:

2NaNO3 + BaSO4

Explanation:

Hydrocarbons are burned to produce water and carbon dioxide. Propane (C3H8) is a homologous series alkane that belongs to the hydrocarbon family. As a result, when propane is burned, three molecules of carbon dioxide and four molecules of water are produced.

Because there is an overabundance of oxygen, carbon dioxide is created when butane is completely burned.

Macronutrients is the most readily available for energy production

Answers

Answer:

The correct answer is - true.

Explanation:

All the macronutrients carbohydrates, fats, and protein all three produce energy. Carbohydrates are the most preferred source of energy for the human body as it is the macronutrient that your system most requires.

The human body easily breaks down most carbohydrates and provides a significant amount of energy. The energy-providing process is called cellular respiration starts with glucose as a substrate. Glucose is the simplest carbohydrate.

Gene expression can be summarized as
DNA is translated to mRNA that is then transcribed to
make a protein.
O
DNA is transcribed to mRNA that is then translated to
make a protein.
Protein is translated to mRNA that is then transcribed
to make DNA.
mRNA is transcribed to DNA that is then translated to
make a protein.

Answers

Answer:

3 one

Explanation:

what is gestation period?​

Answers

Gestation is the period of development during the carrying of an embryo or fetus inside viviparous animals.[1] It is typical for mammals, but also occurs for some non-mammals. Mammals during pregnancy can have one or more gestations at the same time, for example in a multiple birth.
The time interval of a gestation is called the gestation period. In human obstetrics, gestational age refers to the fertilization age plus two weeks. This is approximately the duration since the woman's last menstrual period (LMP) began.

Answer:

gestation period is the period of development during the carrying of the embryo or fetus inside viviparous animals

Describe the similarities and differences between the cheek cell wet mount and dental plaque wet mount.

Answers

Answer:

Cells from the cheek are a type of epithelial cell, similar to skin. ... They can be seen faintly even at 40x (scanning power), but the most dramatic images are at 400x where the nucleus is clearly visible as a dark spot in the center of the cell.

Explanation:

2. What kind of plants contain tubular structures that are used to conduct water from the soil through the roots?
non-vascular plants
seedless plants
seed plants
vascular plants

Answers

Answer:

Vascular plants

Explanation:

I took the quiz

Please help;
Given the range of current speeds shown on the graph above, would deposition ever be possible for clay (0.001 mm) or silt (0.01mm) particles?
Answer yes or no and explain your answer.

Answers

Answer:

Yes.

Explanation:

Yes, deposition can be possible for clay (0.001 mm) and silt (0.01mm) particles when the agent that carry its load is absent in that region such as wind. Wind is the agent that moves clay and silt particles with it so if there is high wind in a specific region, no deposition will occur while on the other hand, those areas where wind is not present, deposition will definitely occurs so we can say that deposition depends on the presence and absence of wind.

Locate each of the following general areas of your body as listed in the background by pointing to areas on your body in reference to body orientation terms. Become familiar with these terms so you can eventually recall their meanings without referring to the background.

a. Anterior
b. Caudal
c. Cephalic
d. Deep

Answers

Answer:

a. Anterior: Refers to the front of the body, which comprises the face and abdomen.

b. Caudal: Refers to the lower structures of the body, starting from the waist towards the foot.

c. Cephalic: Refers to the entire head region.

d. Deep: Refers to the inner core regions of the body, such as the bones within the muscle, the organs, among other internal structures.

Explanation:

The regions of the body presented above are very important for all health professionals, as it facilitates the study and understanding of the human body and the structures that make it up. In addition, the memorization of these terms allows health professionals to talk clearly about the injuries that patients have and the best way to treat them.

Help .....plz help....​

Answers

Answer:

2. sedimentation (decantation follows sedimentation)

3. immiscible (water and oil never mix with each other)

4. size

5. evaporation (condensation chills the mixture where evaporation heats the mixture )

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Answer:

pls mark it as brainliest

sedimentation

immiscible

evaporation

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A biologist discovered a new animal. Upon studying its embryonic development, she observed radial cleavage with the blastopore developing into an anus. This animal was categorized as a parazoan. pseudocoelomate. deuterostome. protostome. radiata.

Answers

Answer:

The correct answer is ''deuterostome''.

Explanation:

Deuterostomes are a superphylum of animals in which the anus is formed in or near the blastopore area in the developing embryo, and the mouth is secondarily formed elsewhere. The oral apparatus that these adult animals enjoy does not come from the embryo's blastopore. Instead it is a new formation. They enter the Bilateria classification, where species that enjoy bilateral symmetry are incorporated. In deuterostomes, the primary phases of division occur in parallel to the axis between the tips. That is, the segmentation they have is radial when the embryo is in state 1 with four cells.

All human impacts on the environment, such as the depletion of natural resources, are significantly worsened by __________. air and water pollution climate change human population growth agricultural practices

Answers

Answer:

overpopulation

Explanation:

this along with the others listed have triggered climate change and soil erosion

A solid form of precipitation is _____________.

Answers

Answer:

precipitate

Explanation:

the examples would be; evaporation, snow, hail, or clouds.


What happens when the density of a medium increases?

Answers

A substance that is more dense per volume has more mass per volume. Usually, larger molecules have more mass. If a material is more dense because its molecules are larger, it will transmit sound slower.

Which characteristic of a dog is inherited?


Barking

Doing tricks

Walking on a leash

Whining for food

Answers

Answer:

Barking is inherited characteristic of dog.

Explanation:

They inherit that from their ancestors.

Barking
The other is learn

Which purpose is the main function of the light-dependent reactions of photosynthesis?

Answers

Answer:

The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem.

The light-dependent reactions convert light energy into chemical energy. The goal of the light-dependent reactions of photosynthesis is to collect energy from the sun and break down water molecules to produce ATP and NADPH. These two energy-storing molecules are then used in the light-independent reactions.

Why do producers (plants) have an opportunity to thrive after wildfires?

Answers

Answer:

Thick bark.  

Trees in fire-prone areas develop thicker bark, in part, because thick bark does not catch fire or burn easily. It also protects the inside of the trunk

Fire-induced sprouts.  

This fire-survival strategy allows for the complete destruction of above-ground growth

How do make a sperm cell go in to a woman

Answers

During sex, sperm cells travel through the vagina to the uterus and fallopian tubes. In the fallopian tube, the sperm meets the egg that was released from the ovary during ovulation.

Los microondas tienen una frecuencia mayor a las ondas de radio. verdadero o falso,justifique

Answers

Los microondas tienen una frecuencia mayor a las ondas de radio.Verdadero o Falso.

Verdadero.

→ Porque, los microondas con/y las radiofrecuencias son radiaciones electromagnéticas de mayor frecuencia.

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MiraculousAlejandra

Which of the following is not a natural disaster ?

1 . Tsunami
2. Earthquake
3. Terrorism
4. Hurricane

Answers

Answer:

terrorism

Explanation:

everyhthing else is natural because hurricanres come from wind and tide overflow tsunamis are caused by earth quakes and earthquakes are natural

The one that follows that is not a natural disaster is the terrorism that is present in Option 3, as the terrorism is done by man while the natural disasters are caused by nature, such as the hurricane and earthquake.

What role does a natural disaster play in the ecosystem?

Natural disasters are phenomena caused by nature, such as cyclones, earthquakes, and tsunamis, and they cause significant damage, which may be indirectly caused by man as man causes global warming, climate change, and so on. The terrorism is man-made or artificial, as certain people are involved and harm other people or the country.

Hence, the one that follows that is not a natural disaster is the terrorism that is present in Option 3, as the terrorism is done by man while the natural disasters are caused by nature, such as the hurricane and earthquake.

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what happen to Potato chips when put into salt water?​

Answers

Answer: the potato chip becomes a substance that is soft and very floppy

Indicate whether each statement is true or false: 1. Compliance is the tendency for blood vessel volume to increase as blood pressure decreases. True 2. Blood vessels with a large compliance exhibit a small increase in volume when the pressure increases a small amount. True 3. Venous compliance is approximately 24X greater than arterial compliance, so as venous pressure increases the volume of veins greatly increases. True

Answers

Answer:

1. False

2. False

3. True

Explanation:

1. Compliance is the capacity of a container to increase in size to allow it hold more content. Blood vessel, arteries and veins expand (increase in volume) to be able to accommodate a surge in blood flow, which is as a result of an increase in pressure of the blood from the heart pumping of the blood

Therefore, compliance in the tendency for blood vessel volume to increase as the blood pressure increases not decrease

The statement is false

2. A large compliance is indicative of being highly sensitive to changes in pressure

Compliance, C = ΔV/ΔP

From the above equation, a blood vessel with a large compliance, exhibit a large increase in volume when the increase in pressure is small

Therefore, the statement 'Blood vessels with a large compliance exhibit a small increase in volume when pressure increases a small amount; is false

3. The compliance of the vein ranges from 10 to 20 times (30 times in some literature) greater than arteries. A factor which can be affected by the vascular smooth muscle contraction or relaxation

Therefore, the statement, 'venous compliance is approximately 24 times larger than arterial compliance, so as venous pressure increases the volume of veins greatly increases' is true

As a group, you and three other students must make a presentation on an animal. Which option is the best example of your group coming to a consensus on the
presentation topic?


The group cannot agree on what animal to choose so your teacher chooses your presentation topic.

Each member gets a vote and the animal with the most votes will be the presentation topic.

A group member is selected as the team leader and the team leader chooses the presentation topic.

The group writes options on slips of paper, puts them in a hat, and the paper that is selected will be the presentation topic

Answers

Each member gets a vote and the animal with the most votes will be the presentation topic, is the best example of your group coming to a consensus on the presentation topic.

what are the different types of presentation ?

Presentations should be always unique as  the information we are trying to present.

An informative presentation is always educational, concise, and only specific points are mentioned.

The main aim of an informative presentation is to share information with  others.

An Instructive Presentations teaches to the audience on a specific topic, but it goes beyond sharing facts.

Persuasive Presentations is to sell something or persuade the audience to take actions. It present  an issue  and explain their solution using data.

Motivational Presentations is an inspiring presentations, aim to generate interest in an audience’s approval.

Decision-making Presentations is to shares a problem, their solution and their outcomes can help speed along the process.

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a bag contains three red marbles five blue marbles and seven green marbles.what is the ratio of blue marbles to the total number of marbles what affect did ice age have on the planet Use these phrases to make sentences of your own. keep a record Presented below are three revenue recognition situations.a. Groupo sells goods to MTN for $908,000, payment due at delivery. b. Groupo sells goods on account to Grifols for $797,000, payment due in 30 days. c. Groupo sells goods to Magnus for $499,000, payment due in two installments, the first installment payable in 18 months and the second payment due 6 months later. The present value of the future payments is $462,200.Required:Indicate the transaction price for each of these transactions and when revenue will be recognized. HELP ASAP PLEASE!!!!!!! Which of the following is not true regarding the flow of information from the adjusted trial balance on the end-of-period spreadsheet? We visited the new planetarium in the city. When we got there, a man showed (1)where to leave(2) . Coats and backpacks. A special guide explained the tour to (3)... I learned many new things. For example, I didn't know (4). Solar system was so big. We counted many moons around some of the planets. Toward the end of the tour, the guide invited (5).. To visit the planetarium again. I will definitely come back someday. We collected (6).. Things and went back to school. I asked friends to name a favorite planet. (7). Is Saturn because of its many rings. The teacher wants(8) . To do reports on the planets. I want to report on the planet Saturn, but so does Aquil. We decided to work together on the report. We want to talk about Titan, one of Saturn's biggest moons. We were interested in this moon, because Titan is the biggest moon, bigger than the planet Mercury! PREGUNTA 1 * 2. Mention the structure of the federal system of government of Nepal. Please hlep x^2+6x+1=0 100 g of water are cooled and the enthalpy change is -12,540 J. What is the change in temperature of the water? Answer this please:I attached a file for you to see define regular body in science A solution of the ionic salt NaFwould have _____ pH.A. An acidic B. A basic C. A neutral Find the perimeter of JKL. Round your answer to the nearest tenth if necessary Shawn Incorporated planned to produce 3,000 units of its single product, Megatron, during November. The standard specifications for one unit of Megatron include six pounds of material at $0.30 per pound. Actual production in November was 3,100 units of Megatron. The accountant computed a favorable materials price variance of $380 and an unfavorable materials quantity variance of $120. Based on these variances, one could conclude that:_________ The table below describes some features of methods used to generate electricity. Name method 4. Does the colour of an object affect the rate of evaporation? Besides socio-economic factors, the soil nutrient depletion can be attributed to insufficient fertilizer use, unbalanced fertilization, and nutrient depletion-induced soil fertility problems. Soil fertility problems associated with human-induced nutrient depletion are widespread worldwide[tex]100 \: points[/tex]Guess what the right topic is Here Not the one above Its the right topicthis is not history Consider the following gasoline sales time series data. Click on the datafile logo to reference the data.Week Sales (1000s of gallons)1 162 203 204 235 186 178 199 2310 1911 1412 21a. Using a weight of 1/2 for the most recent observation, 1/3 for the second most recent observation, and 1/6 the most recent observation, compute a three-week weighted moving average for the time series (to 2 decimals). Enter negative values as negative numbers.Week Time-Series Value Weighted MovingAverage Forecast ForecastError (Error)21 2 3 4 5 6 7 8 9 10 11 12 Total b. Compute the MSE for the weighted moving average in part (a).MSE = Do you prefer this weighted moving average to the unweighted moving average? Remember that the MSE for the unweighted moving average is 8.90.Prefer the unweighted moving average here; it has a (greater/smaller) MSE.c. Suppose you are allowed to choose any weights as long as they sum to 1. Could you always find a set of weights that would make the MSE at least as small for a weighted moving average than for an unweighted moving average? (Yes/ No) Which statement is correct about how the temperature of an object changes?Group of answer choicesThe molecules making up object collide with the molecules of the other and some of the potential energy from a cooler object is transferred to the warmer one.The molecules making up object collide with the molecules of the other and some of the kinetic energy from a warmer object is transferred to the cooler one.The molecules making up object collide with the molecules of the other and some of the kinetic energy from a cooler object is transferred to the warmer one.The molecules making up object collide with the molecules of the other and some of the potential energy from a warmer object is transferred to the cooler one.