List the main principles of the cell theory.

Answers

Answer 1

Here are 3 principles! Hope this helps!!
1 all living organisms are compound by one or more cells
2 the cell is the structure and functional basic unit of life.
3 all cells originated from other cells
Answer 2
The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.

Related Questions

define zygote as it is used in biology

Answers

Answer:

fertilized egg

Explanation:

Zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm). In the embryonic development of humans and other animals, the zygote stage is brief and is followed by cleavage, when the single cell becomes subdivided into smaller cells.

Britannica

Answer:

A zygote is a eukaryotic cell that is produced when two gametes fertilize each other. The genome of a zygote is made up of the DNA from each gamete and includes all of the genetic information needed to create a new person. The zygote is the most basic developmental stage of multicellular organisms.

OAmalOHopeO

What are some reasons why the control of insect pests is difficult?

Answers

Explanation:

some pesticides make them reproduce faster

1.A virus mutates, and therefore it has which of the following traits of living things?(1 point)

It uses energy

It evolves.

It grows and develops.

It is made of cells.

2.Compare a virus to a unicellular organism.(1 point)

Viruses reproduce through asexual reproduction; unicellular organisms need a host cell.

Neither unicellular organisms nor viruses respond to stimuli.

Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.

Viruses need energy; unicellular organisms do not need energy.

3.Summarize the lytic cycle.(1 point)

A virus copies its genetic material and then splits its cell membranes in half to form identical viruses.

A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells.

The viral DNA incorporates itself with the host cell’s and replicates whenever the host cell replicates itself.

A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.


4.Differentiate between the lysogenic and lytic cycles.(1 point)

The host cell copies its own DNA during the lytic cycle.

The host cell is destroyed during the lytic cycle.

The virus injects DNA into the host cell during the lysogenic cycle.

Viral proteins are synthesized during the lysogenic cycle.

5.Infer why doctors recommend people, especially elderly and those with weak immune systems, get the flu vaccine every year.(1 point)

They should get the flu vaccine because viruses mutate.

They should get the flu vaccine because their bodies already have a resistance.

They should get the flu vaccine because viruses do not mutate.

They should get the flu vaccine because their bodies do not build up resistance.


Please i really need help

Answers

Answer:

1. It grows and develops

2.  Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.

3. A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.

4. The host cell is destroyed during the lytic cycle.

5. They should get the flu vaccine because their bodies do not build up resistance.

Explanation:

These are the answers I chose from when i did it  10 minutes ago, they wont let me go back to the quick check to confirm it, but this was the best I could do.

The trait of living things that's depicted by a virus that mutates is that it evolves.

The difference between a virus and a unicellular organism is that Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.

The lytic cycle is when a virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.

The difference between the lysogenic cycle and the lytic cycles is that the host cell is destroyed during the lytic cycle.

The reason why doctors recommend people, especially the elderly and those with weak immune systems, get the flu vaccine every year is because they should get the flu vaccine because viruses mutate.

It should be noted that when a virus mutates, it shows its ability to evolve. In such a case, there's transformation and development regarding the virus.

People are advised to get the flu vaccine every year because viruses mutate. In this case, getting the flu vaccine will help protect the person from the virus.

Getting a flu vaccine is vital especially for the people that have a low immune system as well as for the older people who are already weak.

In conclusion, the correct options are B, C, D, B, and A.

Read related link on:

https://brainly.com/question/23854893

hello!!
What´s Antibiotic

Answers

Antibiotics are drugs that are able to fight diseases caused by bacteria. Besides, it is a "golden solution" that can kill harmful bacteria (pathogenic bacteria such as fungi, actinomycetes, ...), has the effect of inhibiting the growth and spread of of these bacteria.

Answer:

antibiotics mean a type of antimicrobial substance against bacteria.

How are mitosis and binary fission similar?
A. They produce identical daughter cells.
B. They occur only in prokaryotes.
C. They involve division of nuclei as well as cytoplasm.
D. They occur only during sexual reproduction.

Answers

Answer:

They produce identical daughter cells.

What is the scientific term used for the chemical reaction when a fuel burns? (Hint: your answer should be one word.)

Answers

Answer:

Combustion

Explanation:

Combustion is the chemical reaction that happens when fuel burns.

Ans:using a filament of spirogyra in a laboratory Demonstrate how plasmolysi wil occur​

Answers

Answer:

plasmolysis is the shrinkage of protoplast from the cell wall under the influence of a hypertonic solution.this can be observed by placing the fresh filament of spirogyra in a 10% solution of common salt.the cell undergoes exomosis.

I hope this helps

In the rock cycle, if any type of rock is broken down into little pieces, it changes into ______ rock.

Answers

Answer:

small rock

Explanation:

hope it's helpful

Determine if the process is an example of anabolism or catabolism.​ French fries are digested in the intestine, breaking them into smaller molecules A body builder exercises to build muscles through protein synthesis A child eats a milkshake, which provides her with energy Process Catabolism

Answers

Answer:

--> French fries are digested in the intestine, breaking them into smaller molecules.(Catabolic process)

--> A body builder exercises to build muscles through protein synthesis. (Anabolic process)

--> A child eats a milkshake, which provides her with energy (catabolic process).

Explanation:

CATABOLISM is the process by which living organisms break down large or complex molecules into smaller molecules with the release of energy for their own use. Foods that we consume contains different nutrients which includes carbohydrates, fats &oil, and protein. These nutrients are made available for our body cell use and maintenance through the process of catabolism. Through catabolic processes, these nutrients are broken down into its smaller constituents with the release of energy which is used immediately to power molecular machines that support cell, tissue, and organ function. The following are examples of a catabolic process as it involves breakdown:

--> French fries are digested in the intestine, breaking them into smaller molecules and

--> A child eats a milkshake, which provides her with energy

In contrast, anabolic process involves the building up larger molecules from smaller ones. It uses ATP molecules generated by catabolic reactions as a form of energy to create new molecules that form new cells and tissues, and revitalize organs. For example, muscles can be built from the synthesis of proteins. This is also called anabolic training.

French fries are digested in the intestine, breaking them into smaller molecules - Catabolic process

A body builder exercises to build muscles through protein synthesis - Anabolic process

A child eats a milkshake, which provides her with energy - Catabolic process

Catabolism can be defined as the break down of larger molecules into smaller ones in a series of metabolic pathways of which the energy produced undergoes oxidation and then is released or it is used in another reaction. Digestion is an example of a catabolic process i.e. French fries are digested in the intestine, breaking them into smaller molecules. A child eating a milkshake, which provides her with energy (energy is produced) is a catabolic process.

Anabolism involves the build up of molecules from smaller molecules usually needed for bodily functions. Protein synthesis is an anabolic process (buildup from small amino acids to large proteins. A body builder exercises to build muscles through protein synthesis is an example of anabolism

Learn more: https://brainly.com/question/15198053

Which of the following situations would most likely lead to a stable population size?

Answers

Answer:

A. The rates of birth and immigration were balanced by the rates of death and emigration.

Beth broke her ankle bone. The doctor gives her a
brochure on foods she can eat to help restore the
health of her bones. Which element will help Beth
strengthen the bone?

Answers

Answer:

Calcium

Explanation:

Calcium is the healthy bone mineral. About 99% of the calcium in the body is stored in the bones and teeth. It's the mineral that makes them hard and strong. The remaining 1% is needed for many activities that help keep the body functioning normally.

Answer:

Phosphorus will strengthen her bones.

Explanation:

There are a wide number of dietary minerals that are involved in the strengthening of bones. But among all of them, calcium and phosphorus are the key minerals that play an active role in providing strength to the bones. Phosphorus keeps the bones healthy and strong. It also helps in the growth of bones.

Low amounts of phosphorus can lead to thinning of the bones, a disease termed as osteoporosis.

An organism and its taxonomic key are shown below.

An image of an organism is shown. The organism has two body regions with four legs on each side. 3 mm is written next to the image of the organism. There are no claw-like pinchers.


Taxonomic Key
Step Characteristic Organism
1 8 legs Go to step 2.
More than 8 legs Go to step 3.
2 One body region Go to step 4.
Two body regions Go to step 5.
3 One pair of legs on each body segment Centipede
Two pairs of legs on each body segment Millipede
4 Less than 1 millimeter long Mite
More than 1 millimeter long Tick
5 Claw-like pinchers Go to step 6.
No claw-like pinchers Spider
6 Long tail with a stinger Scorpion
No tail or stinger Pseudoscorpion

Which organism is shown in the image?
Millipede
Spider
Scorpion
Tick

Answers

spider has no tail and has no stinger

Answer: its a spider

Explanation: cause it case a legs and it has two body regions

What is mean by photosynthesis?

Answers

Answer:

the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.

Hey there!

Photosynthesis is the reaction that converts light energy to chemical energy in sugar and carbohydrates. Humans can't eat sunligh, so we eat the plants. Plants convert the energy in the sunlight into chemical energy using chlorophyll. Chlorophyll is a molecule produced by plants, algae and cyanobacteria, which aids in the conversion of light energy into chemical bonds. It is the reen pigment found in the chlorookasts of higher plants. They are a part of our ecosystem, and they are lower on the food chain.

Hope this helps! I promise I did not copy or anything like that from the internet.

Have a great day! :)

Whiteflies are common pest insects found on cotton, tomato, poinsettia, and many other plants. Nymphs are translucent and mostly sessile, feeding on their host plant's phloem (sap) from the undersides of leaves. They undergo incomplete metamorphosis into winged adults. Because whitefly nymphs cannot escape predation by moving, you hypothesize that their translucent bodies make them hard to spot by predators. How could you directly test this hypothesis?

Answers

Answer: Comparing the rates of predation on whitefly nymphs coated with a nontoxic dye versus the undyed whitefly nymphs.

Explanation:

A hypothesis refers to an assumption, which is proposed for the sake of an argument which is tested to ascertain if it's true.

The hypothesis can be tested by comparing the rates of predation on whitefly nymphs coated with a nontoxic dye versus the undyed whitefly nymphs.

Which of the following would ATP NOT be used for as energy?
A. Osmosis
B. Healing a cut
C. Keeping warm
D. Push ups

Answers

Answer:

[tex]\boxed {\boxed {\sf A. \ Osmosis}}[/tex]

Explanation:

ATP or adenosine triphosphate is used as energy in all living organisms. It is required for many processes to keep an organism alive. We are looking for the process that does not require ATP.

A. Osmosis

Osmosis is the diffusion of water across a selectively permeable membrane. It is a type of passive transport, so there is no energy expenditure. ATP is not used, but we can check the other answer choices.

B. Healing a cut

Healing a cut requires transporting substances to the cut, inflammatory responses, and cell division to repair the cut. This does require ATP.

C. Keeping warm

To stay warm the body's blood vessels near the surface constrict so less heat is lost and the sweat glands are inactivated. This requires ATP.

D. Push ups

Push ups require many different muscles throughout the body and exercise requires lots of ATP.

The correct answer is Choice A. Osmosis.

evolution by natural selection is an example of a scientific

Answers

Answer:

Ideas aimed at explaining how organisms change, or evolve, over time date back to Anaximander of Miletus, a Greek philosopher who lived in the 500s B.C.E. Noting that human babies are born helpless, Anaximander speculated that humans must have descended from some other type of creature whose young could survive without any help. He concluded that those ancestors must be fish, since fish hatch from eggs and immediately begin living with no help from their parents. From this reasoning, he proposed that all life began in the sea.

Have no idea hopefully some1 can help you

for fun

if you had to choose what animal would you be^-^

Answers

Answer:

Husky. Why not?

Explanation:

Question 7 (True False Worth 1 points) (01.02 LC) The results of an experiment can be validated through replication O True 0 False​

Answers

Answer:

Im pretty sure its true ill coment latter to tell youif it is or not

Explanation:

Answer:

true

Explanation:

The results of an experiment can in fact be validated through replication

plz it will help me alot​

Answers

Answer:

Physical trauma, acute disease, chronic disease, infectious disease and emotional trauma.

Explanation:

Physical trauma, acute disease, chronic disease, infectious disease and emotional trauma are the ways from which health should be affected by happening of natural disasters such as earthquake and cyclones. We are able to predict the weather with the help of satellites that monitors the movement of clouds on the earth atmosphere. Advancement of technology is the main reason which enable us to predict the weather conditions as well as the coming of cyclones in a specific region.

what is reflex action​

Answers

A action that has came in result of an event

It is basically an involuntary response which occurrs immediately. It’s a sudden responce or act.
Like when you place your hand over burning stuff you will immediately take your hand away to that stuff.

There have been several mass extinctions in the planet's history, such as the extinction of the dinosaurs, but the current mass extinction is different. Greater numbers of species are now going extinct faster than ever before. Also unique to the current mass extinction is the cause. What is causing the current mass extinction

Answers

Answer:

    There are several actions that not only humans have done to cause mass extinction. There are things such as poaching which is simply killing large and rare animals for horns, fur, meat, tusks, etc. These parts can be sold for money or resources. When one type of animal has characteristics of parts that give the poacher lots of wealth, herds or single animals can be tracked down and killed. The number of these animals dwindle down, and if nothing is done to help the animal, it goes extinct.

   But things such as nature itself that can cause extinction where humans can do nothing about. For instance, a frog species called "Splendid Poison Frog " has gone extinct for a certain type of fungus that wiped the entire species out, where we can't do anything about.

There are many results on mass extinction, but these two are some that are caused.

Hope this helped.

What statements are true about glycolysis?
Select all that apply.
it consumes some ATP as well as producing it
it produces ATP that can be directly used by cells
o it does not directly require oxygen to operate
o it produces more ATP than any of the other respiration reactions

Answers

Answer:

 true it consumes some ATP as well as producing it

true it produces ATP that can be directly used by cells

true it does not directly require oxygen to operate

false it produces more ATP than any of the other respiration reactions

Glycolysis consumes some ATP as well as producing it, it produces ATP that can be directly used by cells and it does not directly require oxygen to operate. Hence option A,B and C is correct.

What is ATP?

ATP stands for adenosine triphosphate. It is defined as an organic substance that fuels a variety of functions in living cells, including chemical synthesis, condensate dissolution, nerve impulse transmission, and muscular contraction. It is a byproduct of the photophosphorylation, cellular respiration, and fermentation processes and serves as the primary energy currency of the cell.

Glycolysis is defined as a chain of events that convert glucose into two pyruvate molecules, which have three carbons each. Glycolysis is a cytoplasmic process that breaks glucose down into two molecules with three carbons apiece and releases energy. Hexokinase, a phosphorylating enzyme, assists in the phosphorylation process that traps glucose.

Thus, glycolysis consumes some ATP as well as producing it, it produces ATP that can be directly used by cells and it does not directly require oxygen to operate. Hence option A,B and C is correct.

To learn more about glycolysis, refer to the link below:

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Helpppppp!!!
Which of the following is an example of a hormone?

Adrenaline
Blood
Calcium
Thyroid

Answers

I believe the answer is adrenaline, the rest just dont make sense

Answer:

Adrenaline is an example of a hormone. Hormones are chemical messengers in your body, which carry around messages. Adrenaline is a hormone that is released when you are in fear, stress, or doing something dangerous.

Let me know if this helps!

Which type of graph could be easily converted into a pie chart?

Answers

Answer:

bar graph can be easily converted to pie chart

¿Cuántas partes se divide el cráneo?

Answers

Answer:

8

Explanation:

Los 5 huesos que forman la base del cráneo son el etmoides, el esfenoides, el occipital, el frontal emparejado y el temporal emparejado. La base del cráneo se puede subdividir en 3 regiones: las fosas craneales anterior, media y posterior.

Espero que esto ayude

Please list answers below

Answers

False and clean your computer

Which actions could be categorized in the “aerobic” section of the Venn diagram?

Check all that apply.

consists of three stages

yields 36 ATP molecules

does not require oxygen

produces lactic acid

starts process with a glucose molecule

Identify the stage of cellular respiration in which each of the following takes place.



Produces 32 ATP molecules

Creates four ATP molecules, but then gains overall only two

Gives off carbon dioxide

Gives off water

Produces two ATP molecules

Answers

Answer:

start process with gulcose

Explanation:

simple

Plz answer this. I miss typed it as advanced placement.​

Answers

Answer:

option 1

Explanation:

Answer:

a and R

are correct

Explanation:

Biomass is a :
(a) Dry weight of living organism
(b) Fresh weight of living organism
(c) Dry weight of dead organism
(d) Fresh weight of dead organism


(1) only a (2) a,b (3) c,d (4) only c

Answers

Answer: 1. only A

Explanation: bio means living

Answer:

(a) Dry weight of living organism

hope this help you

Paragraph explanation of biosynthesis

Answers

Answer: Biosynthesis is a multi-step, enzyme-catalyzed process where substrates are converted into more complex products in living organisms. In biosynthesis, simple compounds are modified, converted into other compounds, or joined together to form macromolecules. This process often consists of metabolic pathways.

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Which behavior would demonstrate that Joe respects her time ? a) Calling Claire after work hours to discuss his questions b) Booking a two-hour meeting for tomorrow to discuss all his questions at once c) Emailing Claire a long list of questions d) Booking a ten-minute meeting to discuss his most urgent questions if p is the smallest prime factor of 511, then a. 18 p 23b. 10 p 17c. 3 p 9d. none of these The Fourth Amendment does not allow police to randomly test people for drunk driving. True or False What is the value of the expression below when 4x=4? 2x2+x52x 2 +x5Plzzz help!! The Heiji War was _____. What measures can you take to prevent diabetes A refiner produces heating fuel and gasoline from crude oil in virtually fixed proportions. What can you say about economies of scope for such a firm? What is the sign of its measure of economies of scope, SC? Which community health resource can best meet the needs of a person with chronic migraines? The function f(x) = x2 has been translated 9 units up and 4 units to the right to form the function g(x). Which represents g(x)?g(x) = (x + 9)2 + 4g(x) = (x + 9)2 4g(x) = (x 4)2 + 9g(x) = (x + 4)2 + 9 Which of the following is another way of expressing 2 out of 8. 2.5% 25%252.5Pls help me Which parent function is represented by the table?