What is a living cell? ​

Answers

Answer 1

Answer:

Though they are often debated, there are eight main characteristics that define a cell as living.

The first is genetic code. All living things contain DNA, which is like the instruction manual for life. DNA is contained in each cell, and passed from parent to offspring.

The second is growth and development. Whether by creating more cells or creating more organelles within the cell, all living things grow and develop.

The third characteristic is reproduction. Reproduction can be sexual or asexual, but in the case of single cells, it is asexual.

The fourth characteristic is response. All living things, including cells, react to external stimuli, such as temperature or salinity.

The fifth characteristic is homeostasis. Homeostasis is the condition by which living things maintain a stable internal environment in the midst of an ever-changing external environment.

The last three characteristics go hand in hand, and are sometimes combined, but in my mind they are distinctly separate.

Sixth is consumption, which is taking in food and other materials. A cell specifically takes in molecules such as water or glucose during consumption.

Seventh is metabolism, which is using materials consumed in order to create energy. Living cells use enzymes to break down materials to produce ATP (adenosine triphosphate), which is usable energy.

Finally, all living cells undergo excretion in some form. Some examples in cells include exocytosis and osmosis.

These 8 characteristics, though often controversial, determine a cell as living.


Related Questions

What are the main structural supports for the vertebrae

Answers

Answer:

Intervertebral Discs

Explanation:

Between each vertebral body is a cushion; the intervertebral disc. Discs absorb stresses the body incurs during movement and prevents vertebrae from grinding against one another. The intervertebral discs are the largest structures in the body without a vascular supply

Answer:

The dorsal hollow nerve cord

Explanation:

The dorsal hollow nerve cord develops into the central nervous system;the brain and spine

is what a drug does to your body. O a) Irrigation b) Pharmacodynamics c) Excretion d) Pharmacokinetics

Answers

Explanation:

Option b is the correct one

Their correct it is B

Researchers note that a plant closes its stomata on a hot, dry, windy day. What statement describes the plant response to these
conditions?
A)
The stomatal closings and the environmental conditions are unrelated for this plant.
B)
The stomatal closings and the environmental conditions are unrelated for
this plant.
Water loss and water stress is highest on hot, dry, windy days, so the plant
closes stomata to conserve water.
Hot, dry, windy days are not conducive to pollen spread, so the plant closes
its stomata to prevent pollination.
Photosynthesis is decreased on hot, dry, windy days, so the plant closes its
stomata to prevent carbon dioxide diffusion.
a
D)

Answers

Answer:

It is B

Explanation:

i just took it

If a plant closes its stomata on a hot, dry, and windy day, the plant response to these conditions is water loss and water stress is highest on hot, dry, windy days. So, the plant closes its stomata to conserve water.

What do you mean by Stomata?

Stomata are the tiny pores present on the surface of the leaves. A huge amount of gaseous exchange may take place in the leaves through these pores for the purpose of photosynthesis.

During photosynthesis, these stomatal pores take carbon dioxide and water is gradually lost, in order to prevent this water loss in hot and humid conditions, the plant closes its stomata.

Therefore, if a plant closes its stomata on a hot, dry, and windy day, the plant response to these conditions is water loss and water stress is highest on hot, dry, windy days. So, the plant closes its stomata to conserve water.

To learn more about Photosynthesis, refer to the link:

https://brainly.com/question/4341036

Put the following biological structures in the correct order of organization,
from smallest to largest:
A. Squamous epithelial cell, alveoli, lung, respiratory system, fish
B. Squamous epithelial cell, alveoli, lung, respiratory system, dog
C. Respiratory system, dog, alveoli, lung, squamous epithelial cell
D. Squamous epithelial cell, lung, alveoli, respiratory system, dog

Answers

the answer is B

explanation: Im smart

what are perlemoen used for?​

Answers

Answer:

We use them for the meat as food and the shells as decorative items

Explanation:

hope this helps

Mutations in which of the following cells would get passed on to the next generation?
I. sperm
II. Skin cell
III. Egg
IV. Neuron
A. II, III, and IV
B. III only
C.I and III
D. I, III, and IV

Answers

Answer:

C. I and III

Explanation:

A mutation needs to occur in a gamete cell in order to be passed down to the next generation.

If it occurs in a somatic (body) cell, the mutation will only be present in that organism.

On the other hand, in a gamete cell, the mutation will pass down because gamete cells are directly involved in the genetic makeup of the offspring.

So, since sperm and egg cells are gametes, mutations in those cells would get passed on.

The correct answer is C. I and III

YA'LL ARE SMART!!! PLEASE HELP!!!!

Answers

Answer:

Metals takes up most of the left side of the periodic table.

What is Alzheimer's disease??​

Answers

Answer:

Alzheimer's disease is a progressive neurologic disorder that causes the brain to shrink (atrophy) and brain cells to die.

Explanation:

Hope it is helpful.

Thankyou

Answer:

Alzhimers disease is a progressive neurologic disorder that causes the brain to shrink and brain cells to die . Alzhimers disease is the most common causes of dementia - a continious decline in thinking behavorial and social skills that affects persons ability to function indepedently .

vì sao DNA của Prokaryote phải siêu xoắn

Answers

Answer:

poop

Explanation:

poop

pituitary is to brain as thymus is to

Answers

Answer:

Explanation:

chest

Pituitary is to brain as thymus is to Chest.

What is the classification of Ubiquitin Screening Services?

Creative Bioarray offers a wide range of cell-based ubiquitin drug target services, including deubiquitinating enzyme (DUB) profiling services, inducible degrader of LDLR (IDOL)-E3 ligase assays, custom HTS-compatible assays, and so on.

https://dda.creative-bioarray.com/ubiquitin-screening.html

Answers

Answer:

Creative Biogene is a leading company offering the best ubiquitin screening and profiling services. As a well-known expert in this field, our talented scientists provide support, expertise, experience, collaboration and customization to meet your specific demands. Creative Biogene is dedicated to offering a range of state-of-the-art ubiquitin assays services to support the rapidly growing academic and commercial drug discovery interests in this field.

a body may have zero velocity even though its speed is 10m/s. give reason.​

Answers

Explanation:

because speed is time rate at which an object is moving along a bath, while velocity is the rate and direction of object's movement .

Performed by heterotrophs.
Select one:
a. Cellular Respiration
b. Photosynthesis
c. Both Photosynthesis and Cellular Respiration
d. Neither Photosynthesis nor Cellular Respiration

Answers

Answer:

A) Cellular Respiration

Explanation:

Heterotrophs undergo cellular respiration in order to turn the food they eat into energy they can use and unlike autotrophs, they cannot make their own energy so photosynthesis isn't required.

A characteristic is a feature that helps to identify something. How would you describe a characteristic of a good movie or book?

Answers

- descriptive language (book)
- interesting plot
- fitting sound effects/lighting (movie)
- conflict
- pictures
-

prove that Sin^6 ϴ-cos^6ϴ=(2Sin^2ϴ-1)(cos^2ϴ+sin^4ϴ) please sove step by step with language it is opt maths question ​ ​

Answers

Using basic identities in trigonometry....

what are the advantage of the presence of hydrogen in large scale in the sun ?​

Answers

hydrogen is essential to nuclear fusion. hydrogen is the fuel the sun burns. we don't have to burn solar energy, so there's no smoke and pollution

Answer:

Hydrogen fusion reaction is the one which provides so much light and heat (in short, energy) which escapes into space and spread. If Hydrogen on sun ends, It will lose its warmth (and may be soon become a planet, but will surely be a dead star).

Explanation:

Answer from Gauth math

Different between sinking and floating ​

Answers

sinking is being below and floating is being above or on surface

Answer:

⬇ See below ⬇

Explanation:

Sinking is where an object/human/animal goes under a type of surface, normally water. Floating, on the other hand, is where an object is at the surface of a liquid, normally water. (Hope this helps!)

What can you learn about by studying DNA?

Answers

Answer:

whether these DNA tests can tell us much about an individual newborn's destiny, they are already a useful research tool that is providing new insights into how genes and environments interact, new avenues for understanding how mental illnesses (and other illnesses) develop and new pathways to explore potential ...

hope this will help you

mark me brainliest

Answer:

Explanation:

we can learn about DNA tests can tell us much about an individual newborn's destiny, they are already a useful research tool that is providing new insights into how genes and environments interact.

Help anyone please????!

Answers

1. Wavelength
2. Compression
3. Rarefractiom
Please mark brainliest

Which statement applies only to the axial Skelton not the appendicular skeleton

Answers

Answer:

B

Explanation:

some strains of __________________ produce proteins that kills certain insects such as lepidopterans , coleopterans and dipterans​

Answers

Answer:

Bacillus thuringiensis

Explanation:

some strains of Bacillus thuringiensis produce proteins that kills certain insects such as lepidopterans , coleopterans and dipterans​

Answer:

Bacillus thuringiensis

what was the dependent variable

Answers

Answer:

Dependent and independent variables are variables in mathematical modeling, statistical modeling and experimental sciences. Dependent variables receive this name because, in an experiment, their values are studied under the supposition or demand that they depend, by some law or rule, on the values of other variables.

What are the features of Nuclear Receptor Screening Services?

Nuclear receptors (NRs) are a class of proteins responsible for thyroid hormones and sensing steroid and certain other molecules. There are 48 genes in the human genome that code for the NRs. As the largest family of eukaryotic transcription factors, NRs control numerous processes involved in development, cell cycle, and important metabolic pathways.

https://dda.creative-bioarray.com/nuclear-receptor-screening.html

Answers

Answer:

The nuclear receptor superfamily comprises a large group of transcription factors that play a key regulatory role in development and homeostasis of multicellular organisms. A special feature of nuclear receptors is their ability to bind to condensed chromatin templates, which makes them important initiators of gene transcription. Moreover, the ability of nuclear receptors to sequentially recruit a variety of transcription factors and coregulators to target promoters and to orchestrate the whole process of gene transcription confirms their biological significance and stimulates intensive research and a high level of scientific interest in this field. In this review, we summarise current knowledge regarding the structure and function of nuclear receptors as principal regulators of gene expression. Emphasis is given to the molecular mechanisms of nuclear receptor-mediated transcriptional activation and repression including recent progress made in this area.

Sustainable practices include all of the following except
-reducing waste.
-burning fossil fuels.
-recycling.
conserving resources.

Answers

Answer:

burning fossil fuels

Explanation:

Sustainable practices include reducing waste, recycling, and conserving resources. Therefore, the correct option is B.

Fossil fuel combustion is not considered a sustainable practice. Burning fossil fuels releases greenhouse gases into the atmosphere, which contribute to global warming and environmental damage. Moving away from fossil fuels and increasing reliance on renewable energy sources is critical to promoting sustainability. Individuals and organizations can support the long-term health of ecosystems and future generations by implementing sustainable practices such as waste reduction, recycling and resource conservation.

Learn more about sustainable practices, here:

https://brainly.com/question/2043597

#SPJ6

Question 3 of 25
A flashlight beam passes from the air through a car window. What happens to
the speed of the light wave as it passes from the air to the glass?
Water
Diamond
Glass
Alr
Speed of
light (m/s)
225,000,000
125,000,000
200,000,000
299,700,000
A. It decreases.
B. It stays the same.
C. It increases
OD. It falls to zero
SUBMIT

Answers

Answer:

it increases

Explanation:

becaus light beam is so strong it can be dangerous to eyes and when the people see it they go blind

How successful was the NGP in influencing economic growth and development in South Africa

Answers

In government's review of the first 15 years of democracy, it was concluded that South Africa was successful in maintaining macro-economic stability, taking advantage of the natural resource base of the country, establishing a sound trade regime, maintaining and broadening the financial and physical infrastructure of ...

DNA is negatively charged. Therefore, it is
O hydrophilic
O hydrophobic

Answers

DNA is hydrophilic in nature

Parts of the human eye and it's function​

Answers

Answer:

I HOPE THE ABOVE INFORMATION WILL HELP YOU A LOT.

Have a great day ahead.

Cellular respiration produces

Answers

The products of cellular respiration are ATP, oxygen and water

What is a function of the integumentary system?

1 forms blood clots
2 grows new tissue
3 absorbs water
4 break down chemical bonds in food

Answers

Answer:

absorbs water is a function of the integumentary system. hope it help you.

A function of the integumentary system is to grow new tissues. Thus, the correct option B.

What is the Integumentary system?

The integumentary system may be defined as a unique type of system that primarily consists of the skin, hair, nails, and exocrine glands. It is the set of organs that construct an outermost layer of an animal or human body.

The integumentary system plays a significant role in the growth of new tissues within the body. The cells of the skin generally hold the mechanism of renewal or replacement of injured or damaged cells which are present on the epidermis part of a specific organ.

The integumentary system also protects the body from infections, and injuries provide defense against pathogens, etc.

Therefore, a function of the integumentary system is to grow new tissues. Thus, the correct option B.

To learn more about the Integumentary system, refer to the link:

https://brainly.com/question/2801375

#SPJ5

Other Questions
Good morning 2 all ,What is mechanical advantage write its formula. Have a good day thank you What is the range of the function in the graph? Find 2xy 3043OA. 4/2OB.220.8D.4 Cmo se clasifica la comunicacin Order of Operations - Use PEMDAS. Evaluate the expression. Show all work please!18 - 2 (1 + 10 / 5) Help!! I need help with my math!! 16. The ape . from branch to branch in search of food.1) lopes 2) swings 3) swoops 4) leaps A sociologist polled a random collection of people and asked them theirage and annual income. The two-way frequency table below shows theresults. Which of the following is true about the people polled?APeople age 44 and under were more likely to earn atleast $50,000 than people age 45 and up.BPeople age 44 and under were less likely to earn atleast $50,000 than people age 45 and up.CPeople age 44 and under were equally likely to earnat least $50,000 as people age 45 and up.DThere is not enough information to determine ifpeople age 44 and under were more likely to earn atleast $50,000 than people age 45 and up. Find the number of terms of the geometric progression 81, 27, 9,....,1/81 We wish to develop a confidence interval for the population mean. The population follows the normal distribution, the standard deviation of the population is 3, and we have a sample of 10 observations. We decide to use the 90 percent level of confidence. The appropriate value of to represent the level of confidence is ________________. A certain polytomic ion contains 49 protons and 50 electrons. What's the net charge of this ion? The statistics (U or U') used in the Mann-Whitney U test, measure _________. Group of answer choices the separation between the two groups the direction of the differences between pairs of scores the power of the experiment the differences between the means of the two groups Helppp!! Summer math Packet!(+4) +(-7) = V. Complete the second sentence, beginning as shown so that the meaning stays the same.1. My responsibility is to take out the garbage every day.- I am2. When you phoned me, it was my lunch time.- When you phoned me, I .3. David went home before we arrived.- When we 4. I havent been to the cinema for two years.- The last time.5. Ive only recently started wearing glasses.- I didnt .6. I started working for the company three years ago.- Ive..VI. Read the passage and choose the co a family block of Chocolate is made up of 6o small squaresmanica eats 10 square John eats 9 Squares and holly eats5 squares what is the fraction of the block of chocolateis left Hola pordrian ayudarme con esto:Resuelve las ecuaciones aplicando la frmula generala) 2xsobre2-7+3=0Hace mucho que ni hacia este tipo de problemas y por eso les pido su ayuda What poetic device is used to indicate meaning in a character or event in addition to the literal meaning WOULD A KIND S0UL PLEASE HELP ME OUT???!!!!!!!!!!!!The translation (x, y) ->(x + 10, y 6) is applied to triangle ABC to create a new image triangle ABC. Graph triangle ABC on the coordinate plane.show your work so I can see if your answer makes sense !!!!! The circle below is centered at the origin and has a radius of 10. What is itsequation?10O A. x2 + y2 = 100O B. x2 - y2 = 10O c. x2 + y2 = 10O D. x2 - y2 = 100 Find the indicated side of the right triangle