what is the movement of molecules across a barrier such as the semi-permeable cell membrane called

Answers

Answer 1

Answer:

DIFFUSION

Explanation:

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.


Related Questions

i really would love you help

Answers

Answer:

C

Explanation:

critical mass depends on all of the following except ____. Check all that apply. A. The polarity B. The density C. The Catalyst D. The shape

Answers

Answer:

it is either A. or C. im not sure

This a question that you need to apply knowledge of both the digestive system AND biochemistry. You eat
salad with chopped cucumbers, tomato, onion, and Feta cheese with olive oil. Describe the path through the
digestive system of this meal describing how EACH BIOMOLECULE of the meal is digested and absorbed. Discuss all of the organs and enzymes involved.

Answers

The main biomolecules present in the meal are carbohydrates but there are also proteins and lipids.

First of all starch will be hydrolysed in the mouth.Saliva contains an enzyme called amylase that turns starch into dextroses and maltose.

In the stomach the HCl will activate the pepsinogen and it will become pepsin that will hydrolise proteins to albumoses and peptones.

Also in the stomach an enzyme called gastric lypase is present which turns lipids into glycerol and fatty acids.

In the duodenum:The pancreas releases pancreatic amylase which turns starch into maltose. It releases pancreatic lypase which turns lipids into fatty acids and glycerol. It releases proteolytic enzymes(trypsin, chemotrypsin, carboxypetidase, elastase, collagenase) which turn proteins, albumoses and peptones into oligopeptides(3-4 aminoacids) and aminoacids.

In the rest of the small intestines enzymes secreted by the cells that line the small intestine work. Oligopeptidases turn oligopeptides into aminoacids. Maltase turns maltose into 2 molecules of glucose. Sucrase turns sacrose into 1 molecule of glucose and one of fructose. Lactase turns lactose into 1 molecule of glucose and 1 of galactose. The intestinal lypase turns lipids into glycerol and fatty acids.

Mouth

1.Starch----(salivary amylase)--->maltose+dextrose

Stomach

2.lipids---(gastric lypase)---->glycerol+fatty acids

3.proteins---(pepsin)--->albumoses and peptones

Duodenum

4.Starch---(pancreatic amylase)--->maltose

5.lipids--(pancreatic lypase)--->glycerol+fatty acids

6.proteins+albumoses+peptones---(trypsin,chemotrypsin,carboxypeptidase,elastase collagenase)--->oligopeptides+AA

Small intestine(Jejunum and ileon)

7.maltose---(maltase)--->2glucose

8.sacrose---(sacrase)--->glucose+fructose

9.lactose---(lactase)--->glucose+galactose

10.lipids---(intestinal lypase)--->glycerol+fatty acids

11.oligopeptides---(oligopeptidase)--->amino acids

what are the two main categories that all water can be classified into?

Answers

taper watwe mineral water

which of the following is not true about an allele?

A. alleles are found at the same place on a chromosome

B. alleles have a dominant and recessive form

C. an allele is never independently assorted and passed down randomly

D. and allele is one of two or more forms of a gene

Answers

Answer:

C

Explanation:

I guess it's C but not conform

C. An allele is never independently assorted and passed down randomly.

What is an allele?

Alleles are found at the same place on a chromosome, known as a locus. They can have a dominant and recessive form, meaning that one form of the allele may be expressed over the other in the phenotype of an organism. An allele is one of two or more forms of a gene, which are variations of a particular gene that can produce different traits in an organism.

However, alleles are not always passed down randomly. In meiosis, the process of cell division that produces gametes (sex cells), the alleles of a gene are independently assorted and passed down to the offspring. This means that each gamete receives one copy of each allele at random, which can result in a mix of alleles in the offspring. However, the exact combination of alleles that an offspring receives depends on the combination of alleles that its parents had, which can influence the probability of certain alleles being passed down.

Learn more about allele, here:

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What must occur for protein translation to begin?

Answers

Answer:

B) A peptide bond must form between subunits of mRNA

Explanation:

Correct on EDGE 2020

Answer:

A peptide bond must form between subunits of mRNA

Explanation:

edge test

Please helppp! Easy 10 points

Answers

It acts as enzymes hope it helps you

where does the life in the forest start

Answers

Answer:

I would think migration, or evolution to a new species to adapt to the rain forest, temperate forest, or a climate temperate forest.

Explanation:

There are some similarities between prokaryotic and eukaryotic cells. Which of the following structures is found in both prokaryotic and eukaryotic cells?

Answers

Answer:

Plasma membrane, cytoplasm, ribosomes, and DNA.

Explanation:

There are what eukaryotes and prokaryotes have in common.

What question did Jan Ingenhousz seek to answer about plants?

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Answer:

He saw that green plants released bubbles of oxygen in the presence of sunlight, but the bubbles stopped when it was dark—at that point, plants began to emit some carbon dioxide. Ingenhousz concluded that light was necessary for these steps to take place

Explanation:

Its Right

please help me im really stuck and don't know the answer

Answers

I think the answer is d

Which statements about plant and animal cells is true?
Group of answer choices

Plant cells have a cell wall and chloroplasts; animal cells do not have either.

Plant cells have a nucleus and a cell wall; animal cells do not have either of these.

Plant cells have a chloroplasts and mitochondria; animal cells have chloroplasts but do not have mitochondria.

Plant cells have a cell wall and a cell membrane; animal cells have a cell wall but do not have a cell membrane.

Answers

Plants have a cell wall and chloroplasts; animal cells do not have either

Hope this helps : )

what occurs in a chemical reaction

Answers

Answer:

options on. D is write answer

Knowing what you know about photosynthesis, explain how the process may reduce
global warming (caused by too much carbon dioxide in the atmosphere).

Answers

Through the pores called stomata in their leaves, plants take in carbon dioxide from the atmosphere that they use for photosynthesis. ... But when carbon dioxide levels increase, plants' stomata shrink, releasing less water into the air and reducing the cooling effect.

Have a merry Christmas!

The movement of water in or out of the cell membrane without the use of ATP.

Diffusion

Facilitated diffusion

Osmosis

Excoytosis

Answers

The answer is Osmosis because its the only one that has anything to do with water

Which of the following is not a property of water

Answers

Answer:its D

Explanation:

28) 6CO2 + 6H20 + (energy) → C6H12O6 + 602
What process is being shown in the chemical equation above?
Help

Answers

Answer:Photosynthesis can be represented using a chemical equation. The overall balanced equation is. ... Learn about the retirement process, managing your existing files, and alternative services at the Andrew File System Retirement Information ...

Explanation:

PLEASE HELP!!!!10 POINTS!!!!!

Answers

You have it right it’s “H”

Answer:

The cell would no longer be able to produce proteins.

Explanation:

A cell contains around 10 million ribosomes; these ribosomes are organelles that create proteins so, without ribosomes, cells would not be able to produce protein further going on they would not be able to function properly.

Hopefully, this helps! if not sorry. :)

compare the chemical equations for photosynthesis and cellular respiration explain how the two processes are interrelated

Answers

Answer: Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water

Explanation:

whos the best

GX
QLS
PSG​


ur opinion

Answers

Answer:

I have no clues what those are but Ima go with GX

Explanation:

Answer:

QLS in my opinion QLS is the best

Describe how the circulatory system allows the endocrine system to do its job?​

Answers

Answer:

The circulatory system is the transport system for endocrine info. The endocrine chemicals and hormones must circulate through the body via blood vessels.

Luke travels 50km in 2.5 hours on his bike. What is his velocity?

Answers

Answer:

20 km/hour

Explanation:

d/m=V

50 km / 2.5 hours = 20 km/hour

What is germination?

the process which a plant sprouts from a seed and begins to grow.

the process which a plant joins pollen and stigma

the process which a plant elongates roots deeper into soil for better anchoring

the process which a plant creates a flower for sexual reproduction​

Answers

Answer:

the process which a plant sprouts from a seed and begins to grow

Which important event is happening?

Answers

Answer:

I believe the correct answer is option A.

Explanation:

have a good one.

And have a great winter break.

: )

( don't be shy, tap the little crown. o>o )

The combination of absolute and relative dating allows scientists to determine the ages of rocks and fossils. Absolute dating provides evidence that helps us estimate the ages of Earth. How can scientists find the absolute age of igneous rocks?

Answers

Answer:

By radiometric dating

Explanation:

The relative age of a rock sample is determined by comparing a  (or the fossils it contains) to other layers. Relative age of a rock sample can be determined by looking at the position of various rock layers.

Absolute age of a rock sample is the numerical.  Absolute age can be determined by using radiometric dating.

According to Oxford dictionary, radiometric dating is "a method of dating geological specimens by determining the relative proportions of particular radioactive isotopes present in a sample."

The most likely function of the label X in the above figure is

A. anchoring the virus to a cell
B. injecting viral DNA into a cell
C. assembling the parts of a virus
D. sorting and protecting viral DNA ​

Answers

Answer:

c.assembling parts of the virus

C. Assembling the parts of the virus

IS THIS RIGHT I HAVE NOOOOO IDEA BIOLOGY PLS HELPPPPPP REWARD BRAINLIEST!!!!!!!

Answers

It appears to be right. Prokaryotic cells have the cell membrane, cell wall, and plasma membrane. So yes, C is right.

Answer:

C. Hope this helps!!

Explanation:

What seismic hazard is a form of structural failure?

Answers

Pancaking - shaking that causes a building's supporting walls to collapse and the upper floors to fall one on top of the other like a stack of pancakes.

Answer:Pancaking - shaking that causes a building's supporting walls to collapse and the upper floors to fall one on top of the other like a stack of pancakes.

Explanation:

The result of photosynthesis as glucose and oxygen

A reactants
B products
C gas exchange
D chlorophyll

Answers

D chlorophyll because

The result of photosynthesis as glucose and oxygen is basically products. The correct option is B.

What is photosynthesis?

Photosynthesis is a process that plants and other organisms use to convert light energy into chemical energy that can then be released to fuel the organism's activities via cellular respiration.

Photosynthesis is important because it is the process by which plants convert carbon dioxide into oxygen using sunlight.

Animals require oxygen to survive, and plants serve as nature's air filter, filtering out harmful carbon dioxide.

Plants absorb carbon dioxide (CO2) and water (H2O) from the air and soil during photosynthesis.

Water is metabolized within the plant tissues, which means it ends up losing electrons, whereas carbon dioxide is reduced, which means it gains electrons. This converts water to oxygen and carbon dioxide to glucose.

Thus, the correct option is B.

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**EMERGENCY IN TEST RN** How did the offspring end up with traits that are different from the traits of their parents?​

Answers

Answer:

the geans of the parents

Explanation:

Answer:

the inherited recessive genes. recessive genes could lay dormnant for generations before showing themselves

Explanation:

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