In biology, cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells. Cells are the basic unit of structure in all organisms and also the basic unit of ... All living organisms are composed of one or ...

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Answer 1
Answer: Basic unit of life. All living organisms are composed of one or two/more cells.

Example: Unicellar organisms made of one cell; bacteria. Humans, multicellar organisms; made of many cells.

Related Questions

How do you calculate wave speed? a. Divide the wave period by the wavelength. b. Divide the wavelength by the wave period. c. Divide the wave height by the wave period. d. Multiply the wavelength by the wave height. Please select the best answer from the choices provided

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Answer:

B.  Divide the wavelength by the wave period

In a grassland ecosystem, a prolonged drought has caused depletion in food sourſes for a species of rabbit
Which of the following conditions must be met for evolution by natural selection to occur within the rabbit
population?
Some individuals in the rabbit population must evolve traits that improve their survival chances.
Some rabbits must acquire mutations that create genetic variation within the population.
Rabbits must be capable of producing more offspring than are able to survive.
Rabbits must decrease their rate of reproduction to decrease competition for resources.

Answers

Some individuals in the rabbit population must evolve traits that improve their survival chances

In the grassland ecosystem, rabbits must be capable of producing more offspring than are able to survive, this condition must be met the evolution by natural selection to occur within the rabbit population. Thus, the correct option is C.

What is Natural selection?

Natural selection is the process through which different populations of living organisms adapt and change according to the surrounding environment. Individuals in a population are naturally variable with respect to environmental conditions, meaning that they are all different in some ways or the other. This variation in population means that some of the individuals have traits which are better suited to the environmental conditions than that of others.

Rabbits must be capable of producing more offspring than they are able to survive. This conditions must be met for the evolution by natural selection to occur within the rabbit population.

Therefore, the correct option is C.

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what are the technicial terms for organisms that make their own food , and organisms that obtain food through eating other living thing ?

Answers

producers and consumers im pretty sure its been some time though

Which change would likely result from proliferation?
A. an organism's cells divide once adding mass to the organism.
B. an organism's cells multiply once adding mass to the organism.
C. an organism's cells multiply many times adding mass to the organism.
D. an organism's cells divide many times adding mass to the organism.

Answers

The change that bring about proliferation is D. an organism's cells divide many times adding mass to the organism.

Proliferation can be regarded as physiological process of cell division which happens in almost all tissues, which brings about  increase of the number of cells.

It is the reproduction as well as multiplication of similar forms, this form could be cells or morbid cysts.

Instance of this is in cell division in many times.

Therefore, option D is correct

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Answer:

C. an organism's cells multiply many times adding mass to the organism.

Explanation:

After reading, it was C.

What typically happens to the physiological symptoms of a panic attack when an individual goes through the fear of fear cycle of panic?.

Answers

The symptoms get worse due to positive feedback (i.e., the fear cycles generate more fear). It increases the first stimulus.

What is positive feedback?

Positive feedback is a process where a given outcome stimulates the generation of a result for the first stimulus.

Positive feedback occurs during a process known as a feedback loop capable of increasing the first consequence of a stimulus.

In a process involving positive feedback, the stimulus increases the production of the first disturbance.

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two characteristics of arteries and veins.​
If anbody answer it will make them brainlist

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Featured snippet from the web
Located throughout the body, arteries transport nutrient-rich, oxygenated blood to organs and tissues. Arteries are more muscular and have smaller, rounder lumens (internal spaces) than veins. The artery lumen has a wavy endothelium, or inner lining, due to the configuration of elastic tissue beneath it.
The arteries carry oxygenated blood to all body parts, where as veins carry the deoxygenated blood to the heart.

The untreated sewage discharged by cruise ships is _______. a. blackwater b. greywater c. solid waste d. not considered pollution please select the best answer from the choices provided a b c d

Answers

The untreated sewage discharged by cruise ships is Blackwater. So, the correct option is A.

What do you mean by Untreated Sewage Discharge?

Untreated sewage discharge may be defined as sewage that has not passed through a treatment system. This is the sewage that is directly discharged from a toilet into a waterway.

Blackwater refers to any waste from toilets or urinals which is directly discharged into the waterway without any treatment. It is the major cause of water pollution as well.

Therefore, the untreated sewage discharged by cruise ships is Blackwater.

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ASAP Choose ALL that apply for neap tides

Lesson 3. 01

Moon, Sun, and Earth are in alignment

Moon and Sun are at right angles to the Earth

Gravity of the Sun and Moon work against each other

Smaller than normal range of high and low tides.

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Answer:

moon, sun, and earth are in alignment

Stars with the greatest mass will eventually become

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Answer:

Stars with the greatest mass will eventually die because the greater the mass of the star, the sooner they'll die. Lower massed stars live longer than the sun, and higher massed stars live shorter than the sun. They will become into a red giant after wards when its fuel is gone. Hope this helped!

Question 7(Multiple Choice Worth 2 points)
(06.02 HC)

Euglena and several other protists that use their cilia or flagella to move around and gather food are classified along with the plant-like protists. What is the most logical conclusion that can be drawn from this grouping?

They are parasitic on plants and use the plant chloroplasts to photosynthesize.
They must also be able to gather energy through photosynthesis.
Their ancestors were plants that lost their multicellular characteristics.
There must be a point in their life cycle when they produce leaves.

Answers

Answer:

They must also be able to gather energy through photosynthesis.

Explanation:

Some algae are considered protists and have photosynthetic pigments in the body, such as certain species of Chlorela, Chlorogonium, Euglena and Navicula are able to grow normally in the dark or in a carbon-deficient environment provided they are supplied with substances. high energy and easily metabolizable chemicals such as fatty acids, acetates, carbohydrates, etc.

For this reason, we can say that Euglena and several other protists, as well as plants, must also be able to collect energy through photosynthesis.

Answer:they must also be able to gather energy through photosynthesis

Explanation:

don’t need an explanation it’s right

why the dates on the geologic time scale are often changed and updated.

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Answer:

Absolute time measurements can be used to calibrate the relative time scale, producing an integrated geologic or "geochronologic" time scale. ... The overall duration and relative length of these large geologic intervals is unlikely to change much, but the precise numbers may "wiggle" a bit as a result of new data.

Explanation:

Hope this helps :)

What are renewable resources?

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Renewable sources is like an endless supply, for example solar energy, wind, water, geothermal, hydro, and biomass.

Answer:

Renewable resources are resources that naturally grow back the portion that is lost and more solar energy, plant materials are some examples.

Explanation:

Which of the following is NOT a structural adaptation?
camouflage
mimicry
spikes on a hedgehog
a squirrel climbing up a tree

Answers

Answer:

Camoflauge.

Explaination:

Camouflage is when a species changes to resemble its surroundings to protect itself.

Structural adaptations are physical features of an organism such as spikes on a hedgehog.

Since camoflauge is not a physical feature, it is therefore not a structural adaptation.

Hope this helps!

What causes smog in L.A. and in Mexico City? Describe at least factors.


Describe one change to factories and power plants intended to reduce air pollution.


Describe one change to automobiles and buses intended to reduce air pollution.


Describe one way that commuters can now reduce air pollution.



What is still a major challenge to reducing air pollution in Mexico City?

Answers

What causes smog in L.A. and in Mexico City? Describe at least factors.

The smog is trapped in the valley and cannot be carried away by wind.

Describe one change to factories and power plants intended to reduce air pollution.

Reducing toxic emissions from industrial sources, reducing emissions from vehicles and engines through new stringent emission standards and cleaner burning gasoline; and addressing indoor air pollution though voluntary programs.

Describe one change to automobiles and buses intended to reduce air pollution.

Using fuel efficient vehicles, or electric vehicles.

Describe one way that commuters can now reduce air pollution.

Choose a cleaner commute, share a ride to work or use public transportation. Combine errands and reduce trips. Walk to errands when possible. Avoid excessive idling of your automobile.

Which statement is NOT true about the role of glucose?
1.it is produced during photosynthesis
2.it it s food source for the plant
3.it is a waste product of photosynthesis
4.it is converted into ATP

Answers

Answer:

The statement "It is a waste of product of photosynthesis" is incorrect about the role of glucose.

WILL MARK BRAINLIST IF CORRECT PLEASE ANSWER FAST!!!!! _______________ has lots of nutrients but does NOT allow water or air to pass through

Answers

Answer:

the skin on your body

Explanation:

because it is a tough cover it protects the body in many ways,thus it's water proof.

Why are there so few third-level consumers and how does this fit with the energy pyramid? Group of answer choices because there is less energy available at the bottom of the pyramid because of the energy and heat loss at each level of the pyramid because they use the most energy competing for food in the pyramid because they have the fewest sources of food for energy in the pyramid

Answers

Answer:

because of the energy and heat loss at each level of the pyramid

Explanation:

Producers (photosynthetic beings) are the ones who are at the base of the food pyramid, and for this reason, they are the ones with the most energy availability. ,

When a primary consumer feeds on producers, the energy stored in organic compounds is transferred to him. Consumers then use ingested organic matter to produce energy, which, in turn, is used to carry out some processes for their survival. Another part of the substances ingested is lost in feces and urine.

When serving as food for another organism, primary consumers transfer their energy to that secondary consumer, and so on. Therefore, at each level of the pyramid, less energy is passed, and then less energy is available, the more difficult and competitive it becomes for subsequent consumers.

What do each of the leaves of a four leaf clover stand for.

Answers

Answer:

The first leaf represents hope, the second stands for faith, the third is for love and the fourth leaf brings luck to the finder.

Explanation:

Describe the levels of organization in the body.

Answers

Cells are the smallest living part of organisms. When groups of similar cells come together, they form tissues. Groups of tissues that work together to perform a function are called an organ. Groups of organs that work together to perform a job are called an organ system. The body is made up of multiple organ systems.

Which of the following best describes invertebrates and vertebrates? Invertebrates have a backbone and vertebrates do not. Invertebrates do not have a backbone and vertebrates do. Invertebrates and vertebrates both have a backbone. Invertebrates have a backbone in the front and vertebrates have one in the back.

Answers

Answer:

Explanation:Invertebrates are animals without spines, while vertebrates have a spine. Invertebrates are sometimes (mistakenly) thought of as primitive because of their lack of developed organs. Their simple internal systems include respiratory systems such as gills or trachea and they often use an open circulatory system to pump their blood. As invertebrates lack an internal skeletal

structure, they sometimes have an external skeleton that protects their soft bodies called an “exoskeleton.” In general, invertebrate success often comes from their ability to reproduce extremely quickly, unlike many vertebrates who take years to become fully grown.

Vertebrate animals, on the other hand, have a spine that develops from a notochord they possess as an embryo. They also have defined internal systems like complex respiratory structures, a closed circulatory system and sensory organs that build the nervous system. Vertebrates tend to be larger than invertebrates, thanks to their backbone, which allows their bodies to grow larger and move faster than many invertebrates.

The statement that best describes invertebrates and vertebrates is invertebrates do not have a backbone and vertebrates have a backbone.

What do you mean by invertebrates?

Invertebrates may be defined as any animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates.

Invertebrates do not possess a backbone and an internal skeleton, but they have an exoskeleton. They possess an open circulatory system. While on the other hand, vertebrates possess a backbone and an internal skeleton, but they do not possess an exoskeleton. They possess a closed circulatory system.

Therefore, the statement that best describes invertebrates and vertebrates is invertebrates do not have a backbone, and vertebrates have a backbone.

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Nitrogen is an element found in nucleic acids. Where else is nitrogen found?

A. proteins
B. lipids
C. carbohydrates​

Answers

Answer:

A

Explanation:

nitrogen is a fundamental source of amino acids. And amino acids are building blocks of proteins

Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions.
Site 1: "Structures of the Nervous System: The Neuron"

What is the function of dendrites? (Site 1)

Answers

Answer:

The dendrites are important for receiving action potential or other stimulation in order for neurons to become activated. Dendrites are electrical signals that receive extensions of the cytoplasm. These signals come in two fundamental forms: inhibitory and excitatory.

Explanation:

just did it on Edge hope this helped :)have a great life bros

The function of dendrites is to receive signals and information from other cells. They have roots like structure.

What are dendrites?

Thin structures that emerge from the cell bodies of neurons are called dendrites. A neuron gets information from neighboring cells on its dendrite, or "tree branch." Like tree branches, dendrites branch as they advance toward their tips.

In order for neurons to become engaged, the dendrites are crucial for receiving action potentials or other types of stimulation. Electrical impulses are received via dendrites, which are cytoplasmic extensions. The two basic types of these signals are inhibitory and excitatory.

Therefore, dendrites have the ability to take in signals and data from other cells. They have structures-like roots.

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Prepare your own version of a leaflet on integrated pest management
rice production. Include in your leaflet how to formulate local remedies to control
some insects using some available low-cost substances and plant extract. ​

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Answer:

Our experimental results show that a proper manner of an integrated pest management (IPM) cut pesticide use without any yield penalty.

explain how Global ocean currents circulate Earth's ocean waters​

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Answer:

The global conveyor belt's circulation is the result of two simultaneous processes: warm surface currents carrying less dense water away from the Equator toward the poles, and cold deep ocean currents carrying denser water away from the poles toward the Equator.

NEED HELP!!!

A. What are the options for surviving a very cold winter?
B. What protective measures might be required to keep cells alive during periods of torpor?

Answers

Um- where is the question?-

The outer layer of bone _____.

is a thin membrane
is thick and hard
looks like a sponge
makes red blood cells

Answers

i thought it was a thin membrane

im feeling nice today so this is for anybody (execpt people who have a lot of points) i dont need it 50 50 for two people .Have a nice day!

Answers

Answer:

Your Awesome

Explanation:

Thanks lol

Answer:

Thanks!

Explanation:

Can u please mark me brainliest? Im desperate.

Have a great day!
#Equestrians

Which of the following describes the dependent variable?

A. The group in which conditions were not changed

B. The variable that is being manipulated by the experimenter

C. The variable that is observed or measured the the experimenter

D. The observation that the experimenter made that started the experiment

Answers

Answer:

C.) The variable that is observed or measured by the experimenter.

Explanation:

The dependent variable is the variable that is being measured or tested in an experiment.

For example:
In a study looking at how tutoring impacts test scores, the dependent variable would be the participants' test scores, since that is being measured.



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3. Describe the variation between individuals of giant tortoises found on the
Galapagos Island, and explain why.

Answers

Lonesome George lived in the Galapagos, a chain of volcanic islands off the coast of Ecuador, in South America—islands that forever changed our understanding of the natural world. While visiting the Galapagos in 1835, British naturalist Charles Darwin observed local plants and animals. He became fascinated by species that seemed related to ones found on the mainland—but that also had many physical variations unique to different islands.
Over time, Darwin began to wonder if species from South America had reached the Galapagos and then changed as they adapted to new environments. This idea—that species could change over time—eventually led to Darwin’s theory of evolution by natural selection.

explain how crossing over provides evidence to support the claim that meiosis increases genetic variation

Answers

Answer:

at each chiasma, the chromosomes will break and then rejoin,trading some of their genes

Explanation:

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Jonathon borrowed $700 from his grandparents to start a lawn mowing business in his neighborhood. Aftermowing lawns for a month and paying his expenses, he was able to pay them $177.34. How much doesJonathon still owe his grandparents? Plz Answer fastUsing the order of operations, what should be done first to evaluate (-2) + 4 (-15 + 9)(3) - 4? A) Add -15 and 9. B) Divide 4 by -15. C) Subtract 4 from 3. D) Multiply 9 by 3. What should a summary include Y is the dominant gene for yellow color in beetles and y is the recessive gene for red color. A yellow beetle that has one red parent is crossed to a red beetle that has two yellow parents. These two beetles have baby beetles. What are the genotypes of the three generations in this situation? in a car race feild(round track that is 500m diameter an observer was starting point and the race started a red car finished 5 laps in 30 minutes write a sin function to determine the distance between the observer and the red car at the minute graph the function. PLEASE HELP AND I WILL GIVE U BRAINLYa south african white rhinoceros weighs 22658 N and has a top speed of 14 m/s. a bullet from a barrett 0.50 caliber rifle has a weight of 0.4 N and travels with a velocity of 884 m/s. Which object has more momentum in its motion? According to the textbook, stereotyping can sometimes be ____________ because it can ____________ our social environment. Which Civil War battle helped Abraham Lincoln get reelected and took out the center of military operations for the Confederacy?Battle of AtlantaBattle of GettysburgBattle of New OrleansBattle of Shiloh Why does Hamilton think a stronger government is necessary TwT best answer gets brainliest. someone please help ;w; i would really appreciate it. And pls no links and dont answer if you dont actually know the answer 1) Which number is IRRATIONAL?A) 4B) 16C) 32D) 64 How does the author primarily strengthen his article's message to his audience? As in, what does he do or include in his essay to make it stronger? (Write this in 2 complete sentences and include a quote to support: The author uses _____________ to strengthen his essay. The reader can see this with "_____________.") What does an author do when he uses pathos to persuade a reader?O A. Appeals to another authorityO B. Makes an emotional appealO C. Makes an informational appealO D. Appeals to the reader's sense of logic what is an eight-note Don and Linda would like to replace the hardwood flooring in their dining room. The flooring sells for $15.75 a square foot installed. The room size is 15 feet wide by 22 feet long. They can make a 20% down payment but will need to finance the rest at 12% for 42 monthsa. What is the down payment?b. What is the amount financed?c. What is the monthly payment?d. What is the total finance charge? A. "That year was the first time I saw snow. 1 [played outside) in thewondrous white stuff until my fingers and toes were frozen," wrotethe author.B. "That year was the first time I saw snow. I played in the wondrouswhite stuff (snow] until my fingers and toes were frozen," wrote theauthor.C. "That year [1999] was the first time I saw snow. I played in thewondrous white stuff until my fingers and toes were frozen," wrotethe author.D. "That year was the first time I (the author] saw snow. I played in thewondrous white stuff until my fingers and toes were frozen," wrotethe author. PLEASE HELP AND IF YOU KNOW THE ANSWER LET ME KNOW 20 POINTS The past particle of teach Help!List at least 5 objects would create a good Photogram. Includeexamples of both opaque and transparent objects. A brand new smartphone costs $1200. It decreases in value by 13. 3% every year after its purchase. Which function models the value of the phone x years after its purchase?Question 8 options:f(x)=1. 133(1200)xf(x)=1200(1. 133)xf(x)=1200(0. 867)xf(x)=0. 867(1200)x