Which definition is the best for “semipermeable membrane”?
It is a barrier that prevents materials from moving from one side to the other.
It is a barrier that allows materials to move freely from one side to the other.
It is a barrier with tiny openings that let some, but not all, materials pass through.
It is a barrier that helps materials move from one side to the other.

Answers

Answer 1

Answer:

C

Explanation:

Semi means partly

permeable means allowing liquids or gases to pass through it

Semipermeable means allowing some, but not all, liquids or gases to pass through it.

Answer 2

Answer:

c) It is a barrier with tiny openings that let some, but not all, materials pass through.

Explanation:

The prefix "semi-" means "some; partially". "Permeable" means "allow to pass through". Using your knowledge of the purpose of the membrane and the meaning of the word "semi-permeable", you would use context to come to the conclusion that the correct answer is c) It is a barrier with tiny openings that let some, but not all, materials pass through.


Related Questions

Find the remainder when p(x) = –2x5 + x4 + 5x3 + 4x + 1 is divided by (x - 2).

Answers

The remainder when p(x) = -2x⁵+x⁴+5x³+4x+1 is divided by (x-2) is 1.

To solve the question above, we make use of the remainder theorem.

Remainder Theorem: It states that if a function F(x) is divided by (x-a), the remainder is F(a).

From the question,

Given:

Dividend ⇒ p(x) = -2x⁵+x⁴+5x³+4x+1Divisor ⇒ (x-2)

in view of the above and applying the Remainder theorem, The remainder will be p(2)

p(2) = -2(2⁵)+2⁴+5(2³)+4(2)+1p(2) = -64+16+40+8+1p(2) = 1

hence the remainder when p(x) = -2x⁵+x⁴+5x³+4x+1 is divided by (x-2) is 1

Learn more about  the remainder theorem here: https://brainly.com/question/13328536

heat moves through the atmosphere through the process of ?

Answers

The answer is Conduction

Answer:

Heat moves through the atmosphere through the process of Conduction.

Explanation:

Conduction, radiation and convection all play a role in moving heat between Earth's surface and the atmosphere. Since air is a poor conductor, most energy transfer by conduction occurs right near Earth's surface.

What is mineralization

Answers

Answer:

Mineralization is the process by which chemicals present in organic matter are decomposed or oxidized into easily available forms to plants.

Scientists put a sample of water into a sealed tank. Water can be a solid, liquid, or gas. At first, the water was a liquid. Then, the scientists transferred energy out of the substance, and the water changed phase. What happened to the movement of the water molecules?

After the phase change, the water molecules moved . . .

Answers

Answer:

slower and started moving in place

Explanation:

A typical leaf is composed of multiple layers of specialized cells. What is the correct order of layers starting on the upper surface of the leaf and progressing to the lower surface?

Answers

Answer: cuticle - epidermis - palisade mesophyll - spongy mesophyll- epidermis - cuticle

Explanation:

what is the first part of the small intestine called?

Answers

Answer:

The first part of the small intestine is called duodenum

Explanation:

The small intestine is a tightly folded tube which connects to the stomach on the top end and to the large intestine on the bottom end.

The small intestine consists of three parts:

duodenumjejunum (absorbs sugars, amino acids, and fatty acids)ileum (absorbs remaining nutrients that did not get absorbed by the duodenum or jejunum)

Duodenum is responsible for completing the first phase of digestion. In this section of the intestine, food is mixed with enzymes and bile which help break down food.

Answer:

Duodenum

Explanation:

Duodenum is the first part where most of the small intestine digestion happens

which mutated protein causes the symptoms of sickle cell disease?

Answers

Answer:

Mutations in the HBB (beta-globin) protein causes symptoms of sickle cell disease.

why are there no identical individuals among humans?​

Answers

Answer: Numerous contrasts between people are without a doubt a direct result of contrasts in their qualities. ... People vary, obviously, on the grounds that natural cycles are intrinsically factor.

Explanation:

in an experiment describe photosynthesis​

Answers

it’s something about plants. sorry i know this isn’t areal answer i need points

what is pathogen????​

Answers

Pathogen is kinda disease, virus, bacteria or other microorganisms ( which can cause disease)

Answer:   A pathogen is usually defined as a microorganism that causes, or can cause, disease :)

Explanation:

There are different types of pathogens, but we're going to focus on the four most common types: viruses, bacteria, fungi, and parasites.

What processes are responsible for the formation of copper ?

Answers

Answer:

The high temperatures of volcanic magma creates hydrothermal veins, allowing some of the heat to escape near the upper layers of the Earth's crust. This is why copper is often found in the sedimentary layer, where sand and mud are compressed until they form a layer of sedimentary rock on the surface of the earth

Explanation:

what are Negative health effects of frequent, self-induced vomiting?

Answers

Answer: It can rot your teeth out because of the stomach acid.

Explanation:

Give an example of an adaptation

Answers

An adaptation is any characteristic that helps a plant or animal survive in its environment. A penguin's feathers are an adaptation. For example, animals that live in cold places have adaptations to keep them warm. Plants that live in dry areas have adaptations to help them conserve water.

Answer:

Adapting to a new environment is an example of adaptation.

Explanation:

Adaptation means to be able to adjust to something new.

Spindle fibers begin to form.

Answers

Answer: Yes that is true but you gave basically NO information at all.

Explanation:

Answer:

yes that that that that Tish that that

state three reasons why children resemble their parents​

Answers

Answer:

Parents are the only reason our children are alive. Our parents are the reason we exist. Parents try their hardest to take care if their children.

Explanation:

Parents have mixed genes into their child which means that the child resembles both of them because they literally do. Parents try their hardest for their children and most children pick up on this and try hard for everything else.

if one cell undergoes mitotic division every 3 minutes and 18 minutes pass, how many cells will have been created?

Answers

Answer:

6

Explanation:

if there is one cell that is being created every 3 mins, then you would divide 18 by 3 and get 6.

Answer:

here look at this it might help you

Explanation:

Are gender traits completely a result of societal expectations?​

Answers

No, Gender traits are not as a result of societal expectations. They are as a

result of biophysical processes in the body.

Both genders have their unique chromosomes composition in which

Males have XY.Females have XX.

During reproduction, the male sex cell passes either the X or Y chromosome

to the offspring while the female pass only the X chromosomes.

This depicts that the male sex cells which is the sperm is the main

determinant in the gender of a child.

Read more about Gender traits here https://brainly.com/question/913735

What are some similarities and differences between an angiosperm and a gymnosperm? PLEASE

Answers

Answer:

Here are some similarities and differences

Explanation:

Both are more highly evolved than nonvascular plants, both are vascular plants with vascular tissue that live on land and reproduce by making seeds, both are classified as eukaryotes

Only angiosperms are known as flowering plants, many have blossoms and fruits that contain seeds and the typically drop their leaves when the seasons change their leaves are flat and are seasonal in their life cycle

Gymnosperms produce uncovered seeds, most have green needle-like leaf structures, they are generally evergreen

Black eyes (B) are dominant to red eyes (b) in mice. Use a Punnett square to cross two heterozygous parents. What are the possible genotypes?
A. bb
B. BB and Bb
C. BB, Bb, and bb
D. Bb and bb

Answers

C.- BB, Bb, bb
if you need a visual i attached a pic

Que derivados del petróleo se utilizan en la fabricación de materiales deportivos?

Answers

Answer:

Explanation:

*Which statement best explains the main conflict and resolution in "How a Cat Played Robinson Crusoe"?

The cat is abandoned on an island. She adapts to the wilderness and survives until her family returns.

The family worries about the cat. They are overjoyed to discover that the cat is alive when they return.

The cat faces many adversaries, including rats and owls. However, she persists and is able to overcome each.

The cat learns how to hunt. She does not starve to death on the island.

Compound use by cells to store and release energy

Answers

Answer:

Adenosine triphosphate (ATP) is a chemical compound cells use to store and release energy. An ATP molecule consists of adenine, the sugar ribose, and three phosphate groups.

Briefly summarize the structure of moss.

Answers

Mosses are ​bryophytes​, primitive plants believed to be among the first to develop the ability to live on land. Moss plants have no vascular tubes to transfer water or nutrients, and no true stems or roots. Environmental water sources and absorption limit moss plant size.

There may be as many as 15,000 species of mosses. Although unique species of moss grow in dramatically different habitats across the planet – from the arctic to the desert – all have basically the same structure.

Basic Moss Spores

The initial moss plant is a spore given off by the sporophyte that forms at the end of the moss plant’s “stem.” Released spores travel long distances on the wind and may remain viable for decades. Moss spores landing in suitable conditions divide and produce hairy filaments called ​protonemas​, which are like thin plant threads that weave across the growing medium. Sprouting from the spore filaments, gametophytes form, held to the surface by rhizoids.

Main Structure of Moss

The main moss structure is the ​gametophyte​, which functions like a moss’s “stem” and “leaves.” A moss "stem" is called the ​axis​, and this part of the moss supports leaf-like structures.

​Phyllids​ are the leaf-like structures that carry out photosynthesis, transforming sunlight into sugars the moss uses for food. Typically arranged in a spiral, moss “leaves” are usually one cell thick with ribs two or more cells thick down their centers. The cells of moss plants contain ​chlorophyll​, the green pigment that is essential for the process of photosynthesis.

Does moss have roots? No, not really. Moss stems end in root-like strands called ​rhizoids​, specialized to hold the moss to its growing surface. Rhizoids anchor moss plants to the surfaces they grow on, but they do not absorb water and nutrients like true plant roots.

Second-Generation Growth

The second moss structure is really a second generation. Moss reproduction occurs sexually, using separate plants produced at different times. The two separate kinds of moss plants are called ​gametophytes​ (which produce gametes) and ​sporophytes​ (which produce spores).

Gametophytes are tipped with either inverted cone-shaped areas (​archegonia​) or male reproductive organs (​antheridia​). Released sperm (​antherizoids​) need water since they swim to the archegonium. This is one of the main differences between bryophytes and vascular land plants – mosses need water for their sexual reproduction process.

Fertilization occurs once an antherizoid swims to an archegonium. Sprouting from the gametophyte tip after fertilization, a sporophyte holds itself in place by anchoring a foot in the archegonium.

Spore-Bearing Parts

The sporophyte stalk, called the ​seta​, bears the ​sporangium​ (spore capsule) on its tip. One sporangium may produce up to one million spores. Maturing spore capsules are guarded by a covering called the ​calyptra​ that shrivels and falls off when the spores are mature. The calyptra can be a distinguishing part of a moss species, and they are often useful in identifying new mosses.

A cap called the ​operculum​ tops the capsule's opening under the calyptra. The capsule opening (​peristome​) can have teeth that help hold it closed. Matured spores are released when the capsule top ruptures and drift off to form new plants. Like the calyptra, the operculum and peristome of some moss species are highly identifiable.

Mosses are small, non-vascular taxonomic plants

Are there other types of cells other than prokaryotic and eukaryotic cells?

Answers

Answer: No there is not im pretty sure there are only those two cell types.

Explanation:

Cells fall into one of two broad categories: prokaryotic and eukaryotic. The single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes (pro = before; karyon– = nucleus). Animal cells, plant cells, fungi, and protists are eukaryotes (eu = true).

A(n) _______________ is a small box with a glass lid that catches the heat of the Sun. It is coated with black metal to absorb the heat and insulated to keep heat from escaping.

solar battery
solar cell
solar grill
solar oven

Answers

Answer:

Well, its a solar cooker but the anwser is solar oven

Explanation:

Decomposers make ______
available.
A. erosion
B. air
C. weathering
D. nutrients

Answers

Answer:

D

Explanation:

Answer:

D. Nutrients.

Explanation:

help taking final will give the breian thing

Answers

what is your question? i cant download it

After siting in the bathtub for hours your fingers start to look like prunes due to the process of

Answers

Answer:Shrinking Blood vassels

Explanation:

(SCIENCE) which of these statements about heating up water on earths surface is true? water heats up faster than land water heats up by conduction from Earth


PLEASE HELP!!!!

Answers

Answer:

Water heats up to a lower temperature than land.

Explanation:

Because water has a much higher heat capacity, or specific heat, than do sands, soils or other materials, for a given amount of solar irradiation , water temperature will increase less than land temperature.

.・。.・゜✭・have a nice day・✫・゜・。.

Identify two specific populations that most likely increased in number after the mountain lion population decreased. Explain why.

Answers

Any change that occurs at any link of a trophic web will affect the other links. The two specific populations that most likely increased in number after the mountain lion population decreased are rabbits and deers.  

----------------------------

The trophic web is a relationship process between different organisms, through which occurs transference of energy. The ones placed at lower levels pass energy to the ones at the higher levels.

Organisms at each level feed on the preceding one and become food for the next one.

The first link corresponds to a producer organism -autotroph-.  

The following links are the consumers -heterotrophs-: herbivores and carnivores.

The last links are the decomposers that degrade organic matter from dead organisms.  

As it is a web, all organisms are equilibrated until a change occurs.

When the change affects any of the involved links, there can be a cascade effect on the web.

A change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.

Also, when two or more species are competing for the same source of food, a change in any of the population sizes will affect the other ones.

According to the provided trophic web, puma feeds on deer and rabbit.

Since puma was killed, their population size sharply decreased.

This fact followed the predator-prey cycle, in which the predator regulates the prey population size and vice-versa. When there is a decrease in the predator population size, the prey population increases in size because of the absence of their natural predators.

In the absence of puma, deer and rabbits increase their population size. They live in an environment with no predators and enough resources.

The number of individuals of each species increased, and the amount of food consumed increased too.

This change negatively affected grasses and grains, which were over-consumed. Also, crickets and mice were affected too because they compete for the same food source.

So, cascade effects would be as follows,

1) The decreased in the puma population size caused an increase in the deer and rabbit population size.

2) The increase in the deer and rabbit population size caused a decrease in the grains and grasses species population, because they were over consumed.

3) The decrease in grains and grasses caused a decrease in the cricket and mouse population, because they feed on the first ones, competing with deer and  rabbits for food.

The two specific populations that most likely increased in number after the mountain lion population decreased are rabbits and deers.  

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You can learn more about trophic webs at

https://brainly.com/question/516534?referrer=searchResults

https://brainly.com/question/3019070?referrer=searchResults

Briefly summarize the structure of a fern

Answers

Answer:

The structure of a fern. Ferns have 3 major parts – the rhizome, the fronds and the reproductive structures called sporangia. ... An erect rhizome, which is a solid mass that gives rise to a tuft of fronds. You can see this type of rhizome on a king fern or a crown fern.

Explanation:

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