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Answer:The cell membrane functions as a barrier that makes it possible for the cytoplasm to maintain a different composition from the material surrounding the cell. The unit membrane is freely permeable to water molecules but very impermeable to ions and charged molecules. It is permeable to small molecules in inverse proportion to their size but in direct proportion to their lipid solubility.

Explanation:

Answer:

sharp teeth, claws and jaws.

Explanation:

The daughter cells have a different number of chromosomes what is an indication of failure in the motitic division, thats because during division the parent cell have to duplicate the genetic material to pass for the next generation in equal number, since this is important to maintain the cellular integrity, as weel as the characteristics of the cellular species. The Cell A is an identical copy of the parent cell (somatic cell), having the same traits and functions, as well as a normal cellular activity, while Cell B have only half of the genetic information of the mother cell, this cell more close to an sex cell than a somatic cell, numerically speaking, since the fact of it having 1/2 of the information makes it more difficult to perform its cellular functions as a somatic cell.

The statement that best compare a function of proteins and lipids in a human cell is that the proteins store genetic information for cells and lipids provide energy for cellular processes.

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Answer:b

Explanation:

One of the best form of evidence about the history of life on earth are fossils. Fossils provide us clues about major geological evets and past climates. Index fossils are useful for concluding the ages if rock layers.

Absolute dating methods determine how much time has passed after rocks formed by measuring the radioactive decay of isotopes or the effects of radiation on the crystal structure of minerals.

Answer - Option 3

Cystic fibrosis has been treated with gene therapy—a mutation in just one gene results in cystic fibrosis. A parent who carries the CF gene may pass it on to their offspring. After having a kid with CF, parents have a 1 in 4 chance of having another child with the condition.

Cystic fibrosis is brought on by mutations, or mistakes, in the cystic fibrosis transmembrane conductance regulator (CFTR) gene, which either prevents the production of any CFTR protein or causes it to be malformed and unable to carry out its essential cellular role. The CF transmembrane conductance regulator (CFTR) gene is mutated, resulting in CF. On 70% of CF chromosomes, a three-nucleotide deletion (delta F508) that results in the lack of a phenylalanine residue in the CFTR gene's tenth exon has been identified.

Thus, we can conclude that a single gene mutation causes cystic fibrosis.

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No.

Because a thesis statement usually appears at the conclusion of the introductory paragraph of a paper. It offers a concise summary of the main point or claim of the essay, research paper, etc. It is usually expressed in one sentence, and the statement may be reiterated elsewhere.

Light-harvesting complex pigments absorb light and transfer energy to a special pair of chlorophyll a molecules in the reaction centre.

A pigment is a broad term for any molecule that absorbs light and has a distinct colour. Plants contain a variety of pigments, which give rise to the various colours we see. Flowers and fruits are obviously rich in organic molecules that absorb light. Pigments can also be found in the leaves, stems, and roots.

Pigment molecules are frequently organic molecules with "highly conjugated rings" that allow electrons to "bounce" around when "excited." Many other pigments contain transition metals, which transfer electrons between molecules.

Anthocyanins, flavanoids, flavines, quinones, and cytochromes are examples of pigment molecules. None of these, however, should be considered photosynthetic pigments. Photosynthetic pigments are the only pigments that can absorb sunlight energy and transfer it to the photosynthetic apparatus.

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Answer:

Blighia Sapida (aka Ackee)

Explanation:

The given statement is false.

The correct statement is : Reabsorption of water into the capillaries is primarily due to Osmosis.

When the cohesive forces between the water molecules are greater than the adhesion to the walls, capillary action results. The leading water molecules drag the nearby water molecules behind them due to the same attraction between water molecules that creates surface tension.

Reabsorption happens when fluid is drawn back into capillaries from the interstitial fluid as a result of osmotic pressure.

Osmotic pressure pulls fluid back into the capillaries, as opposed to hydrostatic pressure, which pushes fluid out.

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The part of human anatomy that is most likely to indicate the age of an individual are the teeth and bones.

Even unknown people's biological profiles cannot be entirely recreated in the absence of age information. Forensic anthropologists use skeletal markers for the age-related processes of bone resorption, deposition, and remodeling to establish an individual's age.

Estimating the age of adults presents a challenging task for forensic anthropologists due to the complexity, individual variability, and vast variety of external factors impacting it. Instead of using a specific age, anthropologists estimate ages using an age range.

This is explained by the fact that various biological changes take place for younger people at predictable rates and times. When a person reaches biological adulthood, both the volume and the speed of developmental change decrease.

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Answer:

Gills usually consist of thin filaments of tissue, branches, or slender tufted processes that have a highly folded surface to increase surface area. The high surface area is crucial to the gas exchange of aquatic organisms as water contains only a small fraction of the dissolved oxygen that air does.

Explanation:

.

The Proton motive force is the collective name for the chemical and electrical potential differences that are produced across membranes, such as the plasma membranes of prokaryotes.

After red blood cells, white blood cells, platelets, and other cellular components have been eliminated, plasma is the clear, straw-colored liquid fraction of blood that is left. Water, salts, enzymes, antibodies, and other proteins are all present in the blood's biggest component, which accounts for around 55% of the total volume.

55% of the total volume of your blood is made up of the liquid substance called plasma. In addition to moving throughout your circulatory system, plasma is essential for your body's ability to heal after injury, distribute nutrients, remove waste, and prevent infection.

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Answer:

snail and slug and nudibranch are gastropods

the clam and oyster are bivalves and the octopus and the nautilus are cephalopods

Explanation:

cephalopods have 4 groups which are the 8 armed octopus and ten armed squid and cuttlefishes and the shelled chambered nautilues

bivalves have laterally compressed bodies enclosed by a shell and gastropods are commonly known as snails and slugs from saltwater and freshwater and from the land

The concentration of the sucrose solution is 0.077 moles/L

The amount of a substance, like a salt, that is in a particular amount of tissue or liquid, such as blood. A substance gets more concentrated when less water is present. For example, the salt in urine may become higher in concentration when a person doesn`t drink enough water.

The formula for water potential is Ψ = ΨS + ΨP. The osmotic potential is directly proportional to the solute concentration. As the concentration of a solute in a solution increases, the osmotic potential of water in that solution decreases.

Ψ = ΨS + ΨP

ΨS = Ψ - ΨP

Where,  ΨS = Solute potential

ΨP = Pressure potential (-2.0)

Ψ = Water potential (-4.0)

Now, substitute the values:

ΨS = -4.0 - (-2.0)

ΨS = -4.0 + 2.0

ΨS = -2.0

For, solute concentration:

ΨS = -iCRT

ΨS = Solute potential (-2.0)

i = 1

C = Concentration of the sucrose

R = 8.314 × 10⁻² bar L/mol k

T = 37°C or 310.15 K

Now, substitute the values:

-2.0 = 1 × C × 8.314 × 10⁻² × 310.15

C = 0.077 moles/L

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Explanation:

When sensors in the body detect an increase in core temperature, vessels dilate to allow more blood to pass through them which releases the excess heat.

Answer: Reduced Growth

Explanation:

Not sure if there are answer choices but if bacteria that require light are placed in the dark then they will likely have little to no growth.

Answer:

lack of growth

Explanation:

The mollusk's mantle is responsible for secreting calcium carbonate that will be used to form the shell. Therefore, it is spread throughout the body, wrapping it upp. So the correct answer is b. A thin layer of skin covering the body.

Root vegetables grow underground(below the ground) are considered as roots.

They are generally storage organs, enlarged to store energy in the form of carbohydrates. Root vegetables comes in all shapes, colours, and sizes. Root vegetables are easy to grow and in the case of an abundant fall harvest, reap plentiful rewards.

Some of the examples of root vegetables are:Bulbs which include fennel and onions, corms which includes water chestnut, rhizomes which include beets and carrots , tuberous roots include sweet potato and yucca, tubers includes potatoes .

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Answer:

Sea stars have a very unusual circulatory system. They do not pump blood around their bodies. Instead, they use seawater and a complex water vascular system to keep things moving.

Explanation:

No problem :)

Answer: because it is

Explanation:

right?

The conclusion that we can draw about the chemicals released in the inflammatory response is that HMG1 acts as a mediator of acute lung inflammation might leads to lung cancer, such as mesothelioma. The presence of HMG1 causes cells to release certain chemicals that promote tumor growth.

Asbestos has a crystalline category of naturally occurring silicate fibers. These fibers are only visible under a microscope. Asbestos harms lung tissue cells by inducing programmed cell death.

When cells die in this way, they produce HMG1 (high mobility group proteins that promotes an  in other cells. The presence of HMG1 causes cells to release certain chemicals that inflammatory reactionpromote tumor growth.

Therefore, The presence of HMG1 causes cells to release certain chemicals that promote tumor growth.

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An index fossil will be more useful in dating the rock than ancient relative because carbon dating can be performed using the fossil which will give more accurate details rather than the relative dating performed using ancient relative.

Index fossil is any preserved remains of the plant or animal that is particularly useful for the dating purposes. It is useful for determining the geological periods. Most of the rocks that contain the index fossil are found in marine environment.

Carbon dating is the process of determining the age of ancient objects or fossils. In this the amount of radioactive carbon is measured as the rest forms of carbons stop being absorbed but radioactive carbon continues to decay even after an organism dies.

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The effect of this mutation on the rod cells would be ''A smaller hyperpolarization of the rod would occur''.

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The bulk transport of materials from inside of cell to outside of the cell is exocytosis.

Cells must release certain molecules into the environment, such as waste products and signaling proteins, just as they must take in certain molecules, such as nutrition. Exocytosis is a type of bulk transport in which materials are transported from the inside to the outside of the cell in membrane-bound vesicles that fuse with the plasma membrane.

A vesicle typically arises in the endoplasmic reticulum, the Golgi apparatus, or early endosomes. The vesicle moves toward the cell membrane. As the vesicle attaches to the plasma membrane, the two bilayers come together. The vesicle's contents are released into the extracellular environment.

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Answer:

Monomer: Amino acid- Protein

Monomer: Nucleotides- Nucleic Acids

Monomer: Monosaccharides- Carbohydrates

Used for long-term energy storage- Lipids

Explanation:

I did this before. Hopefully it helps!

The question that can be answered using the scientific processes is: (c) what is the effect of plastic bags on birds.

Scientific process is a method or procedure where any hypothesis is established and a series of steps are followed to prove it right or wrong by conducting several experiments. There are six steps in scientific processes, these are: Observation, Research, Hypothesis, Experiments, Analysis of data, and finally the conclusion.

Plastic bags are a type of containers made of polymers consisting of chemicals. These are highly hazardous to the environment as they takes hundreds of years to degrade. If ingested, the bags can cause choking and death of animals and birds.

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a) Pattern of bacteria in the different color regions: The highest concentration of bacteria is observed in colors violet-blue and yellow-orange. A low concentration of bacteria is observed in green color. No bacteria is observed in orange-red color.

b)  Hypothesis: Algae exposed to wavelengths between 500 and 600 nm will express the greatest photosynthetic rate.

When following the scientific methodology, researchers must formulate a hypothesis.

A hypothesis is a scientific conjecture, not verified, that requires corroboration. It is a possibility, not a fact. It is a claim of how it works a relationship between two or more variables.

The researcher hypothesizes to predict what is going on or what is expected to occur.

A hypothesis

In the exposed example, the involved variables might be, for instance, wavelength and photosynthetic rate.

Hypothesis

Algae exposed to wavelengths between 500 and 600 nm will express the greatest photosynthetic rate.

We know that during photosynthesis, oxygen is released. The more oxygen is released into the environment, the greater the photosynthetic rate is.

So, a simple way to measure oxygen concentration (and hence, the photosynthetic rate) is to observe the pattern distribution of oxygen-seeking bacteria when exposed to algae under different light conditions.

These bacteria will be more concentrated in areas where there is more available oxygen. So bacteria concentration will be an indicator of oxygen release. And the amount of oxygen is an indicator of the photosynthetic rate.

In the diagram, we can see that,

This pattern of bacteria in the different color regions suggests that

Under these light conditions, the algae photosynthesize more, and more oxygen is released, so more bacteria are attracted.

Under these light conditions, the algae photosynthesize less and less oxygen is released, so fewer bacteria are attracted.

Under these light conditions, the algae do not photosynthesize, no oxygen is released, and no bacteria are attracted.

Note: Please notice that other variables might be considered when analyzing this example.

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Answer:

No cell walls ,no chloroplast and heterophs.

Explanation:

e.Animals is the correct answer