Which of the following statements best describes the function of a cell membrane?

( WILL MARK BRAINLIEST ) Please help ASAP

A. The cell membrane has many functions, but its primary action is to regulate the movement of materials into and out of the cell

B. The cell membrane has numerous functions, but its primary role is to keep organelles contained within the cell

C. The cell membrane has many functions, but its primary action is to act as a barrier to keep foreign substances from moving into the cell

D. The cell membrane's primary function is to move waste out of the cell

Answer:

It's a,b,or c

Explanation:

never did that bruh but if you get it wrong im sorry but if not good job

Answer:

the answer is B

Explanation:

Answer:  

whew chile

Explanation:

Answer:

c

Explanation:

the membrane is the outside layer of the cell

Answer:

It is an example of enzyme activation through the pH of the environment surrounding the enzyme.

This phenomenon is called proenzyme, proenzymes are inactive enzymes that, due to chemical changes in the environment that vary, are activated or not depending on these.

Explanation:

Proenzymes, generally the best known or named, are found in the digestive system, where the sequential digestion of food is essential, with an order, and the enzymes must be controlled or activated at certain moments of digestion.

Proenzymes can be activated by the presence of chemicals, pH acids and even pH alkalinity, the change of the medium is what gives the enzyme permission to start with its reaction effect.

Usually this happens with enzymes that must be controlled, and that their activity must be in certain periods so as not to generate pathologies or even destroy a tissue of the organism.

Answer:

All living organisms need energy to grow and reproduce, maintain their structures, and respond to their environments

Explanation:

Answer:

Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources, and altering habitats. This can result in huge economic impacts and fundamental disruptions of coastal and Great Lakes ecosystems.

Explanation:

Answer:

they tend to cause problems wherever they don't live.  Or where they didn't originate.

Explanation:

If an exotic species is not in its natural habitat than it can cause and have many problems.

Answer:

Explanation:

Prokaryotic cells came before Eukaryotic cells.

Trust me other all are false.

Prokaryotic cells came before Eukaryotic cells.

All prokaryotic cells have a nucleoid region, DNA and RNA as their genetic cloth, ribosomes that make proteins, and cytosol that incorporates a cytoskeleton that organizes cell substances. But, prokaryotic organisms are a very numerous organization of organisms and are available in many special shapes and sizes.

The examples are:

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Answer:

it evolve heat to surrounding

Answer:

Density Increases, its Mass Decreases, Its Volume Increases.

Explanation:

Answer:

There are many different types of examples of direct and indirect observations.

Explanation:

Direct observations is they perform customers in a store and many bags of they purchase.

Indirect observations is they used the data cannot gathered direct and the data through to be expensive.

Answer:

The correct answer is a.

Explanation:

Asthma is characterized by a chronic inflammatory process of the airways in which a variety of cells predominate, such as eosinophils, neutrophils, and mast cells. Chronic inflammation produces an increase in airway reactivity and recurrent episodes of wheezing, respiratory distress, intercostal pulling, coughing, and chest tightness, especially at night and in the morning. Asthma is a disease in which there is bronchial hyperresponsiveness, which is an exaggerated response of the bronchial mucosa and leads to bronchospasm and bronchitis.

Answer:

The bond from the attractive forces of two opposite charges

Explanation:

Ionic bond-A bond that is formed when electrons are lost or gained by the atoms in the compound...the opposite charges attract to one another forming the ionic bond.

Answer:

1/4 or 25%

Explanation:

Let the wild-type eye color be represented by allele A. The mutant's eye color would be represented by allele a.

The genotype of fruit flies that are heterozygous for a recessive mutation that inactivates gene 'a' ( and therefore results in mutant eye color) would be Aa.

If Aa and Aa are crossed:

                      Aa     x     Aa

progeny:    AA    Aa    Aa    aa

The proportion of the offspring that will have a recessive eye color phenotype (aa) would therefore be 1/4 or 25%.

Answer:

Nucleic acids.

Explanation:

Extremely helpful Bio mnemonics to remember are:

Carbohydrates & Lipids - CHO

Proteins - CHON

Nucleic acids - CHONP

Because of the "CHONP" mnemonic, I was immediately able to recognize the compound as a nucleic acid after seeing the "P", which represents phosphorous.

Carbohydrates, lipids, nor proteins will include "P"; only nucleic acids.

Answer:

These facts are true and disturbing

Explanation:

Genetics is a discipline that has advanced incredibly in the last years. For example, by using the versatile CRISPR-Cas9 genome editing system, we are now able to insert literally any sequence into a given genome in vivo. The CRISPR-Cas9 is a technology that can be used in a regular molecular biology laboratory. It is expected this technique will enable in the near future to correct genetic disorders that have plagued mankind since times immemorial. However, genomic technologies like that could be used by malignant persons to hurt innocent people, thereby it is imperative that countries regulate their use.

Answer:

Fibrous protein

Explanation:

The definition of myosin is "a fibrous protein that forms (together with actin) the contractile filaments of muscle cells and is also involved in motion in other types of cells."

Answer:

c

Explanation:

the theory suggest that formation of organic molecules takes places by the help of inorganic material along with lightening and intense radiation

Lightning and strong radiation in the presence of inorganic compounds. Thus option C is incorrect.

Abiogenesis is the process of forming organic molecules from inorganic ones.

This is thought to be how the first organic compounds were formed around 3.8 billion years ago on early Earth. The classic Miller–Urey experiment from 1952 aimed to recreate the early earth's conditions. They used electric parks to simulate lightning strikes in a glass with greenhouse gases such as methane, which are thought to have been key parts of the early Earth's atmosphere. This experiment resulted in the formation of primitive organic compounds.

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Answer:

F1 genotype  =  1: 2: 1

F1 phenotype = 3:1

Explanation:

given data

G = allete for grey colour feather

and

g = allele for white colour fether

and

Gg = genotype of heterozygotes

we do here cross of two heterozygotes that is

parantal generation                       Gg        ×             Gg          

                                                          ⊥                          ⊥                        

                                                  G            g              G          g

                                                                      gametes    ⇒ F1 generation

F1 genotype  =  1: 2: 1

F1 phenotype = 3:1  

Answer:

Visceral fat

Explanation:

it is fat that wraps around your abdominal organs deep inside your body

Answer:

A.

Explanation:

This is true because scientific investigation is that of experimenting and collecting data to create an analysis and conclusion. The only way to answer a question with scientific investigation is by gathering data during and experiment. A scientist's opinion is not data, but a thought that is not solid and can change. It is not always backed up by facts. Measurements must be taken when you answer a scientific question with data.  This is why A is the correct answer. hope this helped

Answer:

Atoms have three particles: protons, electrons, and neutrons. The nucleus contains protons and neutrons. The outside regions of the atom are called the electron shells and have electrons.

Explanation:

hopefully this helps you. :)

pls mark me brainlest ;)

Answer:

An atom is a tiny indivisible particle.It is made up of three subatomic particles named as electrons,protons and neutrons.Protons and neutrons are located inside the nucleus of an atom and electrons revolve around the nucleus in different energy levels or shells.

Protons are positively charged.Mass of protons is equal to the mass of electrons.Neutrons are neutral.Electrons are negatively charged.

Explanation:

Independent variable is mass of the bob

Dependent variable is period

Control is amplitude

Mitochondria have a highly folded inner membrane that increases the surface area for ATP production. This explains that a cell's structure is related to its function. So the correct answer is option 4.

In an eukaryotic cell, the mitochondria are present and produce ATP through the Krebs cycle, the electron transport chain, and other cellular processes. The inner membrane of mitochondria is folded, and this membrane consists of many complexes that are required for the electron transport chain.

Due to the transfer of electrons, a proton gradient is formed that allows the formation of ATP. More complexes (ATP synthase) can fit into the membrane as it folds, and ATP production increases. To produce more energy, the mitochondria are made this way. Apart from this, other organs such as the intestine have villi that are highly folded to increase the rate of absorption.

Hence, the shape of each cell is related to its function. Option 4 is true for the statement.

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Answer:

theory

Explanation:

the second sentence on the statement adds an observation that isn´t an opinion. if the full statement was only the first sentence, it would be an opinion.

Answer:

It's important to participate in the global economy because there are many benefits to it such as free trade, increased investment, and increased economies of scale. The developments occurring throughout our global economy are crucial because it has allowed for working with other countries to make the most of the good and services, and in turn allowing a strong economy to be formed.

Explanation:

Answer:

Becasue it brings benefits to people

Explanation: