True. There are two basic tenets to cell theory.
All living things are composed of cells.Cells are the basic unit of structure and function of all living things.The cell theory was first proposed in the 19th century by Matthias Schleiden and Theodor Schwann. They observed that all living things, from plants to animals, are composed of cells. They also observed that cells are the basic unit of structure and function of all living things.
The cell theory has been further refined over the years, but the two basic tenets remain the same. Today, we know that cells come in a variety of shapes and sizes, but they all share the same basic features. All cells have a cell membrane, a cytoplasm, and DNA.
The cell membrane is a thin layer that surrounds the cell. It protects the cell from its environment and allows nutrients and waste products to pass through. The cytoplasm is the jelly-like substance that fills the cell. It contains organelles, which are specialized structures that carry out different functions in the cell. DNA is the genetic material that contains the instructions for building and maintaining the cell.
The cell theory is one of the most important concepts in biology. It provides a framework for understanding the structure and function of all living things.
Here are some additional details about the two basic tenets of cell theory:
All living things are composed of cells: This means that every living thing, from a single-celled organism to a complex multicellular organism, is made up of cells.Cells are the basic unit of structure and function of all living things: This means that cells are the smallest unit of life that can carry out all of the functions necessary for life. Cells are able to grow, reproduce, and respond to their environment.The cell theory is a fundamental principle of biology. It provides a foundation for understanding the structure and function of all living things.
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Using a physical or diagram model of the Sun, the Moon, and the Earth to explain the reason for seasons
Answer:
The explanation to seasons is simple. The earth orbits around the sun for 365 days (one year). As the earth orbits around the sun, the amount of sunlight changes. Causing seasons. Or in short terms, seasons occur because of Earth's tilted axis. Hope this helps :)
Answer:The motions of bodies in the solar system are, for the most part, regular and understandable. From Earth, the Sun rises in the eastern sky in the morning and sets in the western sky in the evening. If the Moon is full on Day 1, it will be full again on Day 28, and new on Day 14. The motions of Earth relative to the Sun, and the motions of the Moon and Sun relative to Earth affect different phenomena on Earth, including day and night, the seasons, tides, and phases of the Moon.
Explanation:
HELP ASAP (ﾉ*ФωФ)ﾉ When a species has high genetic variation, the population of that species has a wide variety of genetic traits, such as eye color and nose shape. Do you think one reproductive process promotes higher genetic variation than the other? Explain your reasoning.
Please, you don't have to answer if you don't want to but at least tell me in an easy explanation what this question means.
Also please do not put a random answer or you will get reported and lose your pointsss so please PLEASEEEEEEEEEEEEEEE
Answer:
Yes, I believe genetic variation is higher in offspring depending on the reproductive process; especially through process 2 due to the blending/combination of DNA from two parents rather than DNA being duplicated from a parent cell.
Explanation:
Process 2 is the blending of genes from two parents while process 1 is essentially direct DNA duplication from one parent cell. Take for example humans which are reproduced by two parents. Across the world humans vary greatly in their traits, take for example people with red hair, brown hair, green eyes, blue eyes, right handed, left handed, etc. This is a demonstration of genetic variation as humans over thousands of years have reproduced and passed on traits from two parents which overtime become more and more varied. Compared to process 1, which is just direct duplication of DNA from the parent cell rather than 2 parents reproducing and sharing traits/DNA into their offspring.
Hope this helped! Feel free to ask questions if needed!
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Which of the following is NOT a function of the digestive system? *
Answer:
circulate blood throughout the body
Explanation:
That is a function of the circulatory system
pls help will mark brainliest
Answer:
3, Latitiude that receives the sun's vertical rays
Explanation:
Describe the main differences between meiosis and mitosis.
Answer:
Mitosis involves the division of body cells, while meiosis involves the division of sex cells.
Explanation:
Answer:
Explanation:
Mitosis involves the division of body cells, while meiosis involves the division of sex cells. The division of a cell occurs once in mitosis but twice in meiosis. Two daughter cells are produced after mitosis and cytoplasmic division, while four daughter cells are produced after meiosis.19-Aug-2019
Read the excerpt from Narrative of the Life of Frederick Douglass. Identify the tone in the following sentence.
"How I escaped death, I do not know. There I was, entirely alone, in a thick wood, in a place new to me. My cart was upset and shattered, my oxen were entangled among the young trees. and there was none to help me."
a. Suspensful, stressful
b. Thrilling, exciting
c. Mysterious
d. Factual
A baby receives half of its genes from the mother and half from the father when the sperm and egg join to make a fertilized egg or zygote. Identical twins form when a fertilized egg splits into two separate life forms. Using what you learned in the video, draw a model that shows clearly how cell division forms identical twins.
∅ or Ф i cant draw on here so here you go. It splits tho
plz mark brainliest
hope this helps!!!
Use the diagram below to identify letter A.
Explanation:
the last one oesophagus.
hope this helps you.
Answer:
A is esophagus.
Option D.) Esophagus is correct.
Esophagus is the Food pipe that carries chewed food or water from mouth to stomach in peristalsis movement.
Complete the statement to describe the calcium concentration that must be maintained in human body cells.
The calcium concentration must be greater _______ the cell than ________ the cell.
Answer:The calcium concentration must be greater outside the cell than inside the cell.
Explanation:
When looking at a line graph of seismic wave data, how can you tell when one Earth layer ends and another begins?
i believe it's because it's a different color?
Answer: I’m not sure but I think it’s b
Explanation:
The invention of email opened an important epoch in the history of communication. Which term can replace epoch without changing the meaning of this sentence?
calendar
era
millennium
time line
Answer:
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Explanation:
Answer:
B. era
Explanation:
The word epoch means: a period of time in history.
We want to find a synonym for epoch, or a word that has the same meaning. So, if we were to replace epoch, the sentence would be the same.
Calendar: a chart showing the days, weeks and months of a year
Era: period of history that is long and distinct
Millennium: period of 1000 years
Timeline: a graphic representation of time passing
The word that makes the most sense as a synonym for epoch is era.
Therefore, the correct answer is B: era.
analyze features of scientific diagrams for clarity and readability. Sorry if this is hard
Plants use specialized structures to increase their likelihood of reproduction. Which characteristic of plants would be useful in attracting bats as a vessel for dispersal?
A. The plant produces flowers that put off a fragrant scent.
B. The plant produces flowers that grow into fruit.
C. The plant produces flowers that make pollen.
D. The plant produces flowers that are bright and colorful.
In tropical, subtropical rainforests, and desert temperatures all over the world, where many plant species depend on bat pollination for reproduction, bats are particularly significant pollinators. Thus, option A is correct.
What is attracting bats as a vessel for dispersal?Chiropterophily refers to the practice of bats pollinating plants. Many bat-pollinated plants have light-colored nocturnal flowers (in contrast, bees are mostly attracted to bright, daytime flowers).
Over the course of 50 million years, bats and archaic groups like bananas underwent evolutionary change.
The plant's adaptations for bat pollination include nighttime blossoming, a potent scent that draws bats from all over the world, as well as an abundance of readily available nectar and pollen.
Therefore, the plant produces flowers that put off a fragrant scent.
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HELP PLEASE THIS IS DUE TOMORROW
Which is an example of a body system? *
heart ithink so .......
Answer:
The Bladder is a example of body system
Explanation:
So, when you drink water, the water goes through you throught and travels down to your bladder. The waters minerals and goods get inserted into your blood, then the waste's come out when you go to the restroom
___, fungal cells and some types of bacteria have cell walls
Answer:
Plant cells
Explanation:
I hope i am correct and this helps :)
Answer:
Both fungi and bacteria have cell walls
Explanation:
Most bacteria and all fungi obtain energy from aerobic respiration (respiration in Bacteria is a bit different than in Eukaryotes but oxygen is always needed to oxidise sugars, in the end water and carbon dioxide are formed)
Hope this helps :)
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And have an amazing day <3
plzzz help i will give brainlyest Sally says that divergent plates cause the greatest, strongest Earthquakes. Marks says she's wrong. Tell me who is correct, and how do you know? *
Answer:
Mark
Explanation:
At divergent plate boundaries, earthquakes tend to be weak and shallow. Transform plate boundaries, have shallow, but very powerful earthquakes. At convergent plate boundaries, where two continental plates collide, earthquakes are deep and also very powerful.
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Use the spectrum readings from the sun (upper) and a star (lower) to answer the question.
Which inference can be made from the spectrum readings?
(1 point)
There is a blue shift, which means that the star is moving away from the sun.
There is a redshift, which means that the star is moving toward the sun.
.
There is a redshift, which means that the star is moving away from the sun.
There is a blue shift, which means that the star is moving toward the sun.
Answer:
Hello, the answer is : C. There is a redshift, which means that the star is moving away from the sun.
Explanation:
Answer: There is a Redshift and it is moving away from the sun
Explanation: As a star shifts to red, it moves further away, but as if shifts to blue, It starts to get closer to the sun
help pls I will choose the best answer
Describe how plants reproduce sexually and asexually
Answer:Their pollens fly through the air and reach to places I mean other plants and then reproduce
Explanation:
What is the Tropical Rainforest Biome
A scientist put red blood cells in water that contained salt. Over time, the red blood cells burst. What is most likely true?
a The concentration of water inside the cell was greater than in the salt water.
b There was a higher concentration of salt in the water than in the cells.
c There was a lower concentration of salt in the water than in the cells.
d The concentration of water in the cells and salt water were equal.
Answer: B.
Explanation: Hope this helps.
Can you please at least answer some of the questions if not all. Thankyou
the human body is a body that humans have they help them do daily things
Answer:
1. Just like a city, the human body have certain parts of it that are needed for specific tasks like reasoning which is done in the brain and digestion that's done in the stomach, cities are organized similarly with certain groups of people with certain jobs like politicians that make decisions.
2. The respiration system brings air into the lungs by expanding, this oxygen is absorbed into the circulatory system through the alveoli which have capillaries with extremely thin walls, allowing oxygen in and carbon dioxide to escape. The oxygenated blood is carried to the heart which uses some of it, the pumps the rest throughout the body so that every organ and cell has enough oxygen, and when the oxygen is used by your body it creates the waste product carbon dioxide which is carried through the bloodstream, back to the alveoli, and exhaled.
4. Although Gabe is right about organs keeping us alive, he is wrong about cells not being important because every organ, bone and hair in or on your body is made up of cells, so without cells you wouldn't have any organs to keep you alive.
Explanation:
Hope this helps :)
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Answer: ALSO THE - ARE SO I COULD POST THE ANSWER WITHOUT BAD WORDS
7: One shouldn't be to weak or strong otherwise you may get some pain. You could also end up overusing the other one. Otherwise, you may be both weak & strong which isn't the best idea of strong.
Explanation:
4) One muscle could affect the movement of other muscles as they all work together to have your body move. (I don't know how to explain it in a scientific way)
3) anterior del-toid, pectoralis major and cora-cobra-chialis are effect shoulder movements.
1) In your legs there is the quadriceps femoris muscle group which includes the re-ctus femor-is, vast-us later-alis, vast-us medi-us, & vast-us inter-medius.
Sorry I can't see the diagram & i am not smart enough for the rest.
Choose one moment from Narrative of the Life of Frederick Douglass that stood out to you and explain via audio response why that moment is important. Why did it stand out to you? How does that moment show Frederick Douglass' point of view?
need help asap
what are the five functions of cell membrane
Answer:
protects the cell by acting as a barrier.
regulates the transport of substances in and out of the cell.
receives chemical messengers from other cell.
acts as a receptor.
cell mobility, secretions, and absorptions of substances.
Explanation:
How are poverty and homelessness worldwide problems?
Brainliest: 15 points
Secondary answer: 10 points
Please help!!!!
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A scientist put red blood cells in water that contained salt. Over time, the red blood cells burst. What is most likely true?
The concentration of water inside the cell was greater than in the salt water.
There was a higher concentration of salt in the water than in the cells.
There was a lower concentration of salt in the water than in the cells.
The concentration of water in the cells and salt water were equal.
Answer: It is most likely true that there was a lower concentration of salt in the water than in the cells because when blood cells are put in a hypotonic solution such as pure water, the little to no salt concentration in the water causes the cells to swell and burst. This would occur because the water would try to dilute the solution inside of the blood cell and which would, therefore, cause it to burst. Hope this helps!
Explanation:
Answer: C. There was a lower concentration of salt in the water than in the cells.
I hope this helps!