PLEASE I REALLY NEED HELP IN THIS (42 POINT'S)

After conducting your experiment, answer the following questions:


What do you observe after twenty-four hours?

What two molecules (molecular species) are involved in this experiment?

In which region was the concentration of water greater—inside or outside the thistle tube—when you first set up the experiment? Explain.

Based on what you have learned about membranes and osmosis, how could you explain the results of this experiment?

Answers

Answer 1

can you explain a little more please

Answer 2
1. After twenty-four hours = water level rises more on the side with sugar than on the side without

2. Sucrose (C12H22O11 ) and water (H2O)

3. The concentration of water is higher OUTSIDE the tube at the start. That side of the membrane is 100% water, while the inside of the membrane is a solution of water and sugar.

4. Water moves through the semipermeable membrane from high concentration to low concentration to reach equilibrium in a process called osmosis. The sucrose cannot pass through the membrane because the molecules are too large, but water molecules are small enough to permeate the membrane. By the end of the experiment, the water has moved through the membrane into the thistle tube so that the sugar has been diluted with more water and the concentrations are equal.

Related Questions

a bird is flying 10 miles per hours east is it speed velocity or acceleration?
a car is travelling at 50 mph, then slowe down to 20 mps. speed, velocity, or acceleration?
thanks!
(extra)
A duck is swimming at 2 feet per second. speed, velocity or acceraleration?

Answers

Explanation:

Speed is the distance traveled per unit of time.

Velocity is the displacement divide by time. It is speed reported with a specific direction. Velocity is a vector quantity.

Acceleration is the rate of change of velocity with time.

A bird is flying 10 miles per hours east is it speed velocity or acceleration?

Velocity

a car is travelling at 50 mph, then slowed down to 20 mps. speed, velocity, or acceleration?

Acceleration

A duck is swimming at 2 feet per second.

Speed

10 Points! Please help! What would a sample adaptation for a plant and animal be for a persistent drought, river changing course, and air pollution?

Answers

Answer:

ok i said for the first box: they need little water and for animals: they are reptiles or like a lot of sun. for the next 2 im stuck!!!

Explanation:

Adaptation is the process of adjustment to new conditions in order to survive and thrive.

What is adaptation?

Adaptation is the process of adjustment to new conditions in order to survive and thrive. Here are some possible adaptations that plants and animals could develop in response to persistent drought, river changing course, and air pollution:

Persistent drought:

A plant could develop a deep taproot system that can reach water sources deeper underground.An animal could develop the ability to conserve water, such as through the production of highly concentrated urine or feces.

River changing course:

A plant could develop the ability to disperse seeds over longer distances, allowing it to establish itself in new areas as the river changes course.An animal could develop the ability to swim or navigate through new waterways created by the changing river course.

Air pollution:

A plant could develop leaves that are better adapted to filtering out pollutants, such as thicker and hairier leaves or specialized pores that can trap and remove pollutants.An animal could develop stronger lungs or respiratory systems that can filter out pollutants, or the ability to move to areas with cleaner air.

These are just a few examples of the types of adaptations that plants and animals could develop in response to these challenges. In reality, the specific adaptations that evolve will depend on a variety of factors, including the specific species, the severity and duration of the challenge, and the available resources and genetic variability.

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According to the cell theory, which statement is correct?

Answers

Answer:

According to the cell theory all organisms (unicellular or multicellular) are formed of cells. It also states that all cells arise from pre-existing cells by cell division and do not originate spontaneously. Bacteria and other organisms therefore cannot arise spontaneously.

Explanation:

hope this is correct

i feel like its b or a

As per the cell theory, the correct statement is that cell arises from pre-existing cells. The correct option is D.

What is cell theory?

Cell theory is a biological theory first proposed in the mid-nineteenth century that states that living organisms are made up of cells, that cells are the basic systemic unit of all life forms, and that all cells originate from pre-existing cells.

The cell theory is significant because it explains the concept of cell and includes the following postulates:

The cell is the basic component of life. All cells develop from pre-existing ones. Cells are the building blocks of all living organisms on Earth.

According to the unified cell theory, all living things are made up of one or more cells; the cell is the basic unit of life.

Thus, the correct option is D.

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Your question seems incomplete, the missing options are:

A) Viruses are true cells.

B) Cells are basically unlike in structure.

C) Mitochondria are found only in plant cells.

D) Cells come from preexisting cells.

Write a short note on the activities that cause Air pollution.?

Answers

Explanation:

fumes from vehicles is the most common cause of air pollution

Answer:

The burning of fossil fuel

wildfires

transportation

burning of garbage

pollutants emitted from factories

carbon monoxide from factories

Agricultural Activities

Construction and demolition

the burning of wood

spray products

Explanation:

Where can the following organelle be found: Mitochondria. Also if it a multiple choice.

a: Prokaryotic cells
b: Animal cells
C: Plant cells

Answers

Answer:

all of them

Explanation:

Mitochondria are found in the cells of nearly every eukaryotic organism, including plants and animals. Cells that require a lot of energy, such as muscle cells, can contain hundreds or thousands of mitochondria.

BUT EACH CELL HAS A DEFINING TRAIT ABOUT THEM

-PROKARYOTIC-no nucleus

-PLANTS- cell wall. large central vacuole

-ANIMALS-multicellular might have more than one mitochondria

Okay so I need the steps of photosynthesis in the right order, I'm taking a test on Mgraw Hill and it is a huge emergency. Screenshot added for clarity. I ordered it from what I remember, But I'm super unsure.

Answers

Answer:
Refer to the diagram
Hope this is helpful

why do I exist? (IMPORTANT ANSWER NOW)

Answers

You are a fearfully and wonderfully made craftsmanship!

I exist because I am lucky that I exist. tricky question have a nice day:)

Which genes are turned on or off In a nerve cell?

Answers

I think it's called an epigenetic, but im not sure

The arrows on either side of the fault represent the relative movement of the
two tectonic plates. What type of boundary is represented in the diagram?

a)subduction
b)convergent
c)divergent
d)transform

Answers

Answer:

D

Explanation:

The arrows on either side of the fault represent the relative movement of the two tectonic plates. The type of boundary is represented in the diagram is convergent. Thus, option B is correct.

What is tectonic plates?

Earth’s tectonic plates are part of the planet’s crust which correctly describes Earth’s tectonic plates. Huge fragments of the upper mantle and crust make form tectonic plates. Both continental and oceanic crust make up their composition. Mid-ocean ridges and the significant faults that delineate the plate boundaries are subject to earthquake activity.

Our globe would look drastically different if it weren't for plate tectonics. We have a stable climate, mineral and oil deposits, and oceans with a chemical balance that supports life thanks to the continuous recycling of the Earth's crust.

The tectonic plates, which have a thickness of about 100 km, are made up of this crustal layer of the globe. These plates, which continue to float on the warm and thick mantle, collided to create the mountains.

Therefore, The arrows on either side of the fault represent the relative movement of the two tectonic plates. The type of boundary is represented in the diagram is convergent. Thus, option B is correct.

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Cellular respiration

Answers

Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP), and then release waste products.

Please help ASAP please it’s urgent

Answers

Answer:

I believe it's "chewed up food". I hope this helps.

Answer:

3rd

Explanation:

Do you think populations stay in genetic equilibrium after the environment has
changed significantly?

Answers

Answer:

Do you think populations stay in genetic equilibrium after the environment has changed significantly? ... It is likely because after the population changes, it is sufficient for its environment and does not need to go through change.

Explanation:


What types of erosion help create V-shaped valleys?

Answers

V-shaped valley
As the river erodes downwards the sides of the valley are exposed to freeze-thaw weathering which loosens the rocks (some of which will fall into the river) and steepens the valley sides. The rocks which have fallen into the river help the process of corrasion and this leads to further erosion.

Choose the best answer.

1) Using a compound microscope, a person can view the specimen on stage magnified up to ____ times.
A. 1,000
B. 50
C. 100
D. 10
E. 10,000

2) Choose the best answer.

What is the magnification range for an electron microscope?
A. 1,000 times
B. 2,000 times
C. 200 times
D. 100 times
E. 100,000 times

Answers

Answer:

1)10,000 times

2)100,000 times

Glycolysis is the first step in cellular respiration. Which option best summarizes the process?
A. aerobic; 6-carbon glucose forms four 3-carbon pyruvates; forms a net total of 3 ATP
B. anaerobic; 6-carbon glucose forms two 3-carbon pyruvates; forms a net total of 2 ATP
C. aerobic; 6-carbon glucose forms three 2-carbon pyruvates; forms a net total of 2 ATP
D. anaerobic; 6-carbon glucose forms two 3-carbon pyruvates; forms a net total of 4 ATP

Answers

Answer: B

Explanation:
In both aerobic and anaerobic respiration, glycolysis of 1 glucose molecule (6C) will produce 2 pyruvate (3C).
Glycolysis use 2 ATP and produce 4 ATP, so the net total energy produce is 2 ATP

Glycolysis of 1 glucose molecule also produce 2 NADH

Glycolysis is anaerobic and it involves 6-carbon glucose forming two 3-carbon pyruvate and a net production of 2 ATP.

WHAT IS GLYCOLYSIS?

Glycolysis is the first step of cellular respiration in all living organisms. It involves the breaking down of glucose molecule to form pyruvate molecules and 2 ATP molecules.

Glycolysis is an anaerobic process, hence, it does not require oxygen to occur. This is why every living organism can undergo glycolysis.

In summary of the process of glycolysis, it is an anaerobic process involving the formation of 3-carbon pyruvate from 6-carbon glucose and a net production of 2 ATP molecules.

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What is the best explanation for species diversifying to fill each new niche? A. The plants chose the niche that they "liked" best. B. Ln each niche, the fittest plants were able to leave more offspring than other plants. C. Successive generations of plants adapted to each new niche. D. Only some plants could get nutrients from the soils.

Answers

Answer:

C. Successive generations of plants adapted to each new niche.

Explanation:

The process by which species with diverse ecological and morphological variations specialized for various niches arise from a common ancestor is known as adaptive radiation.

Due to variety in habitat and diet, species diversify in order to fill the various niches within the same environment. For example, in the Finches observed by Darwin in the Galapagos islands, adaptive radiation is seen in how  their beaks have changed in size and structure so that they now became adapted to different diets. Some species eat mostly animals such as  insects, whereas others became adapted to feeding on seeds or plants.

In the case of the plants, adaptive radiation would also play a role in how the species diversified to fill each new niche.

Answer: Succesive generations of plants adapted to each new linche

Explanation:

What is the term for the photopigment present in rod cells?

Answers

Answer:

Rhodopsin is the photopigment in rods.

What protein does this DNA code for?

Answers

DNA codes for a single amino acid

which function do skin stem cell perform

Answers

Answer:

Bulge

Telogen

Catagen

Explanation:

Stem cells (SCs) residing in the epidermis and hair follicle ensure the maintenance of adult skin homeostasis and hair regeneration, but they also participate in the repair of the epidermis after injuries.

Maybe a picture would help:

I hope this was helpful!

Answer:

Replacing lost skin cells

Explanation:

What is the scientific name for the wildflower plant?

Answers

There is no specific name for it so that’s why it is called a wildflower

Answer:

There is no scientific name.

Explanation:

Wildflowers are a group of flowers that are common in the wild. It is not a specific species, so it does not have a scientific name. Did you mean to insert an image to show a certain species of wildflower?

What are disadvantages of sexual reproduction?

Answers

Me wait that’s y I’m a disappointment

would it be ideal if temperatures are often below freezing where you launch rockets?

Answers

Explanation:

And it should go without saying that you don't want to launch during a hurricane or tornado. If the rocket flies into a thunderstorm then it will attract lightning strikes. This was partly attributed to the low temperature weather, far lower than had been the case with previous launches: below freezing at 28.

when it's time to divide a cell organizes its DNA into ____​

Answers

Answer:

During interphase

The cell grows and makes a copy of its DNA ( DNA is copied and there's a complete extra set of all the genetic material).

The cell moves to the second stage. It  ;

Organizes and condenses the genetic material Prepares to divide.

Explanation:

what structure is used by ribosomes as the instructions for making proteins ?

Answers

I believe that it is RNA

Which is a cofactor?
A. NAD
B. H2O
C. ATP
D. CO2

Answers

Answer:

Atp

Explanation:

Which of these weather events can be
worsened by global warming?

Answers

Hi there!

There answer would be “Hurricanes”, as they can be worsened by global warming.

I hope this helped and I hope you have a great day!

When both alleles are equally strong and both visible, it is called ___________.

Answers

Answer:

Codominance

Explanation:

You're welcome!

codominance.

it happens when two heterozygous alleles are strong enough in the phenotype a being.

18. Dr. Milosz electrically stimulates the lateral hypothalamus of a well-fed laboratory rat. This procedure is likely to
A) cause the rat to begin eating.
B) decrease the rat's basal metabolic rate.
C) facilitate conversion of the rat's blood glucose to fat.
D) permanently lower the rat's set point.
E) increase the incentives for food but decrease motivation to eat.

Answers

The answer is B
Hope this help?!

What alternate form of genes do nucleic acids have that allows them to offer variability? allele codon nucleotide chromosome​

Answers

Answer:A-Allele

Explanation:

just took the quiz

The alternate form of gene that nucleic acids have that allows them to offer variability is the allele that is present in the first option, and there are more than two alleles present for one gene.

What is the gene?

The gene is the message that is present in the DNA, and the gene of the prokaryotes contains very few introns, while the gene of the eukaryotes contains many introns, and the genes only express their exon parts, not the introns. In most cases, the gene has two alleles, and depending on the alleles' presence on the homologous chromosomes, the character is expressed. Some genes that have more than two alleles are called multiallelic genes, and they show the combined effects of their alleles.

Hence, the alternate form of gene that nucleic acids have that allows them to offer variability is the allele that is present in the first option.

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PLEASE HURRY GIVING BRAINLIEST ANSWER IF CORRECT: When you are running, which body systems are you predominately using?
O
A. Respiratory and Reproductive
O B. Skeletal and Muscular
C. Digestive and Excretory
OD. Immune and Cardiovascular

Answers

Answer:

A

Explanation:

hold up why is reproductive with repiratorjiuvhov?? then its probably B

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