Observation of Diffusion Rate in Relation to Cell Size
As you have observed, cells are small. Consider your little toe: it is made of about 2-3 billion
cells! A newly-made cell will grow, but once it reaches a certain size it will divide to form two
new cells rather than growing bigger. Why is this? Why aren't you made of a few dozen, or a
few hundred cells, instead of trillions? Why don't single-celled organisms like amoebas and paramecia grow
as big as a human? In this lab, we will investigate this question using model cells.

Answers

Answer 1

Explanation:

new cells rather than growing bigger. Why is this ?

There are two main reasons why cells divide rather than continuing to grow larger and larger: ... If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane. Cell Division. Cell division is the process by which cellular material is divided between two new daughter cells.

Why aren't you made of a few dozen, or a

few hundred cells, instead of trillions?

if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. When this happens, the cell must divide into smaller cells with favorable surface area/volume ratios, or cease to function. That is why cells are so small.

Why don't single-celled organisms like amoebas and paramecia grow

as big as a human?     again The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.

i belive this is just the introduction to the project but here


Related Questions

Help! In which stages of meiosis are the cells considered diploid?

Answers

Answer:

The cell is diploid because the homologous chromosomes are still located within the same cell membrane.

Explanation:

Answer:

homologous chromosomes are still located within the same cell membrane. Only after the first cytokinesis, when the daughter cells of meiosis 1 are fully separated, are the cells considered haploid

Explanation:

in the phloem, what goes out?. ​

Answers

Answer:

His heart. If you talking about the poem, "MY HEART GOES OUT".

Explanation:

How would a small, uncharged lipid move across the cell membrane?
o through simple diffusion, down the concentration gradient
O through simple diffusion, against the concentration gradient
o through facilitated diffusion, down the concentration gradient
O through facilitated diffusion, against the concentration gradient

Answers

Answer:

Through simple diffusion, down the concentration gradient.

Explanation:

The phospholipids of the membrane are amphipathic with hydrophillic heads and hydrophobic tails. Other polar molecules cannot go through this hydrophobic interior. Since small uncharged lipids are non polar and hydrohobic, they are able to go through the membrane without the help of transport proteins. Therefore, the last two options can be ruled out because facilitated diffusion includes the use of a protein. Diffusion involves molecules moving down the concentration gradient so the second option can be ruled out.

what is the primary difference between diffusion and osmosis

Answers

Long answer here!

In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.

The movement of particles (such molecules or ions) from a region of higher concentration to a region of lower concentration is known as diffusion.

Thus, It happens in a variety of media, including gases, liquids, and solids. The inherent propensity of particles to travel down their concentration gradient in search of equilibrium is the driving force underlying diffusion.

On the other hand, osmosis is a particular kind of diffusion that entails the passage of water molecules over a membrane that is only permeable in certain places. It happens when the solute concentrations on opposite side of the membrane differ.

Thus, The movement of particles (such molecules or ions) from a region of higher concentration to a region of lower concentration is known as diffusion.

Learn more about Diffusion, refer to the link:

https://brainly.com/question/13513898

#SPJ6

Please Helpp Ill give you points

Answers

Answer:

amino acid

Explanation:

Letter G represents the attachment site for an amino acid

Which level or organization is higher than the water hole community ?

Answers

Answer:

the answer is a

Explanation:

i did that same question in my test

Which scenario is likely to result in the most diverse offspring?

Asexual reproduction by budding
Asexual reproduction by binary fission
Sexual reproduction between two individuals in the same population
Sexual reproduction between two individuals from different continents

Answers

Answer:

sexual reproduction between two individuals from different continents

Which two body systems work together to allow you to send a text message

Answers

Answer:

muscular system and nervous system

Explanation:

I think ??????

Which of these does organic farming use?
A.
effective pesticides
B.
genetically modified seeds
C.
hormones
D.
fertilizers
E.
green manure

Answers

E is the right answer

14. Cross a Bb x BB. What percentage of the offspring is Dominant.
25%
50%
75%
100%
0%

Answers

I think the answer is 75%
The answer is 100%.
B b
B(BB) (Bb)
B (BB) (Bb)

All of the offspring is dominant.

Why do cells need to carry out cellular respiration?

Answers

they need to because this is how they convert chemical energy from oxygen into ATP which helps them reduce waste

What is the relationship between respiration and cellular respiration?​

Answers

Answer:

Through a chemical process called cellular respiration. As you know, respiration is the process of breathing. Cellular respiration is not the same thing as breathing, but they are closely related. When you breathe in, you take in the oxygen your cells need for cellular respiration.

Explanation:

Searched It up

Which endocrine gland is indicated by the arrow?

pineal gland

adrenal gland

hypothalamus

ovary

Answers

Answer:

adrenal gland

Explanation:

Answer:

adrenal gland

Explanation:

list the symbol for lipids

Answers

Answer:

Carbon, Hydrogen and Oxygen. So the symbol is CHO.

Explanation:

HELP PLEASE!!

Celeste found this article in a neighborhood newsletter.

Hey, Kiddos! Come and join the gang at our Spring Fling next Saturday, March 20. Meet at the North Pavilion at 11:30 a.m. for games, prizes, and a tug-of-war. There’ll be hot dogs and root beer floats! Don't forget sunscreen and a lawn chair.


The intended audience for this article is

A. young children in the neighborhood. The writer's style is informal, and the purpose is to persuade kids to come to a party.

B. parents in the neighborhood. The writer's style is informal, and the purpose is to educate adults about a community party.

C. young children in the neighborhood. The writer's style is formal, and the purpose is to educate children about community traditions.

D. parents in the neighborhood. The writer's style is formal, and the purpose is to entertain readers with funny stories of a neighborhood event.

Answers

Answer:

a

Explanation:

it clear and short enough for kids

How do most bacteria get food?

Answers

Answer:

Foodborne illness/contamination

Explanation:

Most dairy and meat products are at risk for having salmonella, this is why you must cook

it so you can kill the bacteria. These foods can contaminate fresh veggies that you don't cook which can cause you to get sick.

Amebas are single-celled organisms that need to obtain food in order to

Answers

Answer: The amoeba is another animal-like protist that must move about to find food. The amoeba uses phagocytosis to feed on organisms.

does the moon have phases that change on a monthly basis

Answers

Yes it does it has phases every month

Where is the genetic material that determines the inherited traits of an organism located inside of a eukaryotic cell?

Cytoplasm
Vacuole
Nucleus
Ribosome

Answers

Answer:

the answer is :nucleus

A rich variety of genetic material in an ecosystem will:
1. reduce the biodiversity of the ecosystem

2. decrease the carrying capacity of the ecosystem

3. reduce the likelihood of future medical discoveries

4. increase the chances that some organisms will survive change​

Answers

The answer will be 4

A rich variety of genetic material in an ecosystem will increase the chances that some organisms will survive change​.

What is an ecosystem?

An ecosystem contains all the organisms and the biological environment (which contain abiotic and biotic factors ) with which they show interaction.

These biotic and abiotic components are related concurrently through nutrient and water cycles and energy discharges.

Energy joins the procedure through photosynthesis and is interspersed into plant tissue.

Thus, option 4 increases the chances that some organisms will survive change​ is correct.

To learn more about the ecosystem click here:

https://brainly.com/question/1673533

What are the chemicals for the two strands of nucleotides

Answer fast pleaseee

Answers

The chemical structure of DNA and its nucleotides The DNA double helix is composed of two strands of DNA; each strand is a polymer of DNA nucleotides. Each nucleotide consists of a sugar, a phosphate group, and one of four nitrogenous bases. The structure and orientation of the two strands are important to understanding DNA replication. Drag the labels to their appropriate locations on the diagram below. Use only the pink labels for the pink targets, and the blue labels for the blue targets. Labels can be used once, more than once, or not at all.

Coral needs sunlight to grow. True or false identify if it is false.

Answers

Answer:

Yes ,corals depend on the zooxanthellae (algae) that grow inside of them for oxygen and other things, and since these algae needs sunlight to survive, corals also need sunlight to survive.

Answer:

True

Explanation:

Corals need to grow in shallow water where sunlight can reach them. Corals depend on the zooxanthellae (algae) that grow inside of them for oxygen and other things, and since these algae needs sunlight to survive, corals also need sunlight to survive.

Hope this helps ya!

Describe how chimpanzees use touch to communicate.

No searching please. I already tried that and it wasn’t the answer you need for the question.

Give brainliest!

Answers

Since Chimpanzees can't talk, they make sounds, body posture, facial expressions or they use their hands, kinda like sign language but in their own way that they understand, they also use touches as a way to communicate how they feel or what they are trying to convey, what they have available to them they use to rely a variety of messages to each other.

A forest fire would cause an ecosystem to go through which of the following?

A. tertiary succession

B. secondary succession

C. primary succession

Answers

Answer:B, Secondary succession

Explanation:

Saponification Select one: a. is a hydrolysis reaction. b. results in the production of triglycerides. c. is used to store energy for later use. d. is a reaction found in plant metabolism.

Answers

Answer:

A) hydrolysis reaction

Explanation:

hydrolysis can be explained as a chemical process whereby molecules of water is been added to a substance, and in most reaction the substance and the water molecules split to two part as a result of the addition, and there would be gaining bof hydrogen ion by fragment of the parent molecule. An example of this is saponification.

Saponification can be defined as process of converting oil fat as well as lipid to soap and alcohol through heating using aqueous alkali. Common aqueous alkali that can be used is NaOH. Soap are regarded as salt of fatty acid. Reaction between Ethanoic acid and alcohols is an example of a saponification

Here is soap chemical formula

CH3(CH2)14COO− Na+

Answer: The correct option is A ( is a hydrolysis reaction).

Explanation:

Saponification is the alkaline hydrolysis ( using sodium hydroxide or potassium hydroxide) of fats and oil. It is commonly used for making of soaps which are used for washing and cleaning.

The process is a hydrolysis reaction because there is splitting of ester linkage bonds of triglycerides and addition of hydroxyl group from a hydroxide. This process leads to the production of alkaline salts of long chain fatty acids(soaps). This can be summarised below

Triglycerides (fats&oil) + base( NaOH)

-------> Soap + Alcohol

which of the following is FALSE?
a. sex-linked traits can affect females, but it’s rare when it happens
b. autosomal disorders aren’t sexist: they affect males and females just the same
c. sex-linked disorders happen because x and y chromosomes are not homologous
d. autosomal disorders affect all chromosome pairs
e. sex-linked disorders can be inherited in the x chromosome of both mom and dad

Answers

Answer:

option C is incorrect

Explanation:

Because sex chromosomes don’t always come in homologous pairs, the genes they carry show unique, distinctive patterns of inheritance.

Calvin steps into a pothole and twists his ankle at the bon- fire. He is in a great deal of pain and cannot stand on the ankle . In the hospital, the examining physician notes that Calvin plantar flex and dorsiflex the foot but cannot perform inversion without extreme pain. Explain what this means. What structure could he have injured?

Answers

Answer:

He sprained his ankle. The structures that he could have damaged are his ankle's ligaments.

Explanation:

Calvin twisted his ankle, which caused an ankle sprain. In an ankle sprain, the ligaments, which keep together the bones and contribute to the movement of or feet, are damaged. Depending on the severity of the sprain, the ligaments could be over-stretched or torn, causing pain when moving the feet.

The force of attraction between objects that is due to their masses

Answers

Answer:

I am 100% sure that this answer is gonna be Gravity because the distance and mass are the two things that can differ the "force" of one thing...Gravity.

Explanation:

Based on the information in the graph, which region's population will grow the most in the next 40 years?
A. United states
B. Europe
C. Africa
D. Asia​

Answers

Answer:

Africa

Explanation:

A P E X

Match with the correct pattern of inheritance.
a. Multiple alleles
b. Polygenic traits
c. Incomplete dominance
d. Codominance

Answers

Answer: Multiple alleles

Explanation:

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