Which type of cell is capable of self-renewal?
A stem cell
B blood cell
C muscle cell
D neuron

Answer:

The mutation leads to apoptosis in p53 mutant cells

Explanation:

This mutation is basically the point mutation where CGC-arginine mutates to CCC-proline.  The major difference between the two is presence of codon 72 of the p53 gene . This codon in p53 leads to  apoptosis in p53 mutant cells

Answer:

chromosomes are located in the nucleus

The neutral form of lysine in the active site of UstD with a Schiff base linkage to PLP cofactor is a deprotonated amino acid residue. In this form, the lysine residue is negatively charged and has a pKa value of around 10.5, which is slightly acidic.

The ratio of the concentration of the neutral form of lysine to that of its conjugate acid form at neutral pH (pH 7) is approximately 1:1. This is because the concentration of the conjugate acid form (H2N-C-O-C-NH2) is inversely proportional to its pKa value, which decreases as the pH increases. At pH 7, the concentration of the conjugate acid form is much lower than the concentration of the neutral form.

It's worth noting that the ratio of the concentrations of the neutral form and its conjugate acid form may vary depending on the specific conditions and solvent used.

Therefore, the neutral form of lysine can also exist in equilibrium with its protonated form, which has a pKa of around 11.

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Answer:

a) they eat or consume other animals

Answer:

the cells divide

Explanation:

firs cell divide into 2 daughter cells and then to 4 and then it keeps on going

Answer:

abnormal vaginal bleeding including between periods, after menopause and after intercourse

abnormal or increased amount of vaginal discharge

foul-smelling vaginal discharge

unusually long or heavy periods

bleeding after a pelvic exam or vaginal douching

Explanation:

Hope this helps! :)

Answer:

Statement A - cellular membrane

Statement B - eukaryote

Statement C - spore

Statement D - prokaryote

Explanation:

The cell membrane is a protective layer present around the cell and cell organelle that regulates and allows different molecules to enter and exit to regulate homeostasis.

Eukaryotes are the organism that can be unicellular or multicellular with the cells contain a nucleus in it.

Spores are reproductive cells that has a resistant layer that protects the cell from an unfavorable condition and capable to form an adult.

An organism that is unicellular and lacks the nucleus is known as a prokaryote and bacteria is an example of such organisms.

Heritability: The traits that confer a reproductive advantage to the lizards, such as smaller body size or more compact body shape that allows them to fit into narrower crevices, are likely to be heritable.

Variation: Within the current crevice lizard population, there is likely to be variation in body size and shape. Some lizards may have longer limbs or more flexible bodies, allowing them to navigate and escape larger crevices more effectively. This variation is crucial for the process of natural selection.

Heritability: The traits that confer a reproductive advantage to the lizards, such as smaller body size or more compact body shape that allows them to fit into narrower crevices, are likely to be heritable. These traits can be passed on to future generations through genetic inheritance.

Overproduction: Crevice lizards tend to produce a large number of offspring, exceeding the carrying capacity of their habitat. This overproduction leads to competition for limited resources, including suitable crevices. Only a fraction of the offspring will survive to adulthood.

Reproductive advantage: Lizards with traits that allow them to survive and reproduce more successfully in larger crevices will have a reproductive advantage. They are more likely to pass on their advantageous traits to the next generation, increasing the frequency of those traits in the population over time.

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Answer:

Some require heat for seed dispersal.

Fertilized ovules grow into seeds.

Male and female cones may grow on the same plant.

Explanation:

I did this quiz. Have a good day :)

A  rubber ball dropped from a certain height has constant uniform acceleration due to gravity. Therefore, rubber ball dropped from a certain height is an example of uniform acceleration.

Elastic potential energy causes a ball to bounce as it is transformed into kinetic energy, which then brings the ball back up. However, the ball does not get high as in the start, because some of its energy is transferred to the floor or into sound.

And also, as the ball hits the ground, or a table, it changes shape for a split second, even though we don't see it. This also requires energy.

Therefore, we can observe that the height of each bounce is a little less than the previous one. Some of the kinetic energy of the ball is retained, when it strikes the floor but all the other is transformed. It loses a bit of its kinetic energy every time the ball bounces and after that it ceases to bounce after several strikes.

While playing tug of war, one person pulls the rope to the left with 50N force and another pulls to the right with 65N force.

A rope will have same tension throughout even when forces acting on both ends are different when the rope considered is massless and inextensible. The rope does not exert any force other than tension. As the tension on an ideal rope is uniform, the forces ( although not same) produce uniform tension.

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Answer:

Explanation:

Gene expression in eukaryotic cells is regulated by repressors as well as by transcriptional activators. Like their prokaryotic counterparts, eukaryotic repressors bind to specific DNA sequences and inhibit transcription.

A specific protein that determines a phenotype is produced after the genetic information carried by DNA is translated into a code carried by RNA.

Replication, transcription, translation, and reverse transcription are the four pillars of life.

Translation is the process by which proteins are made from RNA, whereas transcription is the process by which RNA is converted into RNA from DNA.

Translation takes place in the cytoplasm, whereas transcription takes place in the nucleus.

The DNA promoters are bound by RNA dependent polymerase during the transcriptional initiation phase.

Association of ribosome subunits, tRNA, and an initiation factor with mRNA occurs during the translation's initiation phase.

Release of RNA or mRNA transcripts is a component of the transcription's final step.

The ribosome separates from the polypeptide chain when it encounters stop codons during translation.

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Answer:

magnetfiing galss

Explanation:

The statement that is NOT true about conditions within the given biomes is "Temperate grasslands are in the wetter areas of the temperate zone."

Temperate grasslands are typically found in areas that experience moderate rainfall, but they are not necessarily located in the wetter areas of the temperate zone. The distribution of temperate grasslands is more influenced by factors such as temperature, soil conditions, and vegetation types. They are characterized by a semiarid climate with moderate rainfall, but not as wet as regions with forests or higher levels of precipitation.

Tundras, on the other hand, are indeed very cold with little rainfall. They are characterized by extremely cold temperatures and a short growing season. Precipitation in tundra regions is generally low, often in the form of snow, and the frozen ground limits water absorption.

Steppes are cold grasslands with little precipitation. They are similar to temperate grasslands but tend to have colder climates and receive less rainfall. Steppes are found in regions with a continental climate and are often associated with dry and arid conditions.

Deserts are known for their extremely low levels of precipitation. They have arid or semiarid climates, which result in limited rainfall. Deserts are characterized by their dry and barren landscapes, with scarce vegetation and adaptations to survive in water-scarce environments.

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The material that contributes most to the compressive strength of bone is hydroxyapatite. It is a mineralized form of calcium phosphate.

The crystals of the Hydroxyapatite crystals are densely packed within the bone matrix and provide rigidity and resistance to compressive forces. It  forms a mineral phase that gives the bone its hardness and helps to hold  compression.

The primary organic components of bone is collagen. Collagen also play a significant role in the overall strength and resilience of bone. Collagen fibers provide flexibility and tensile strength to the bones and hence it allows bones to resist bending and twisting forces.

The combination of hydroxyapatite and collagen creates a composite material that increases the compressive strength and properties of bone. The connection between inorganic mineral and organic protein components  of bone is crucial for the structural integrity and functionality of bone for the human body.

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The main material that contributes to the compressive strength of bone is hydroxyapatite, a type of calcium phosphate mineral. It is a crystalline mineral that is similar in composition to the mineral component of teeth and is what gives bones their hardness and rigidity.

Hydroxyapatite makes up about 70% of the weight of bone, and it provides the bone with its compressive strength and stiffness.However, it should be noted that bone is a composite material that contains both organic and inorganic components. The organic components of bone, such as collagen fibers, provide flexibility and toughness. This combination of hardness and flexibility is essential for the function of bone, as it allows the bones to bear weight and withstand impact without fracturing.

However, the organic components of bone, such as collagen fibers, provide flexibility and toughness, which are also important for the function of bone. The structure of bone, with its network of trabeculae and marrow spaces, also plays a role in its compressive strength, as it provides a unique arrangement of load-bearing structures that help distribute force throughout the bone.

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Answer:

Heat is often used in greenhouses and makes plant growth possible when the weather is cold outside. Increased temperatures in greenhouses increase the rate of photosynthesis. Temperature regulation is important – note that cooling may also be required.

Explanation:

Genotype: 25% LL, 50% Ll, 25% ll. Phenotype: 25% Long legged, 50% Medium legged, 25% Short legged. Phenotypic ratio⇒ 1:2:1. Yes, there are 50% chances of having only medium-legged chicks. Incomplete dominance is influencing leg length.

Incomplete dominance is an inheritance pattern that occurs when neither of the two involved alleles is entirely dominant over the other one. In this case, the heterozygous organism’s phenotype is different from homozygous phenotypes, and expresses as a mixture of them. This third phenotype is an intermediate between both homozygous parents.

The exposed example is a case of incomplete dominance.

Let is name the alleles as L (coding for long) and l (coding for short).

There are three possibe phenotypes,

Cross: Between two medium-legged animals

Parentals)  Ll   x   Ll

Gametes) L   l     L   l

Punnett square)    L          l

                      L     LL        Ll

                       l     Ll         ll

F1)

Offspring Genotype%

Offspring Phenotype%

Phenotypic ratio⇒ 1:2:1 ⇒ 1/4 Long : 2/4 Medium : 1/4 Short

Medium-legged cabos carry both alleles, L and l, which means that during fertilization there are

These are expected ratios, but it does not mean the progeny will obligatory express this distribution. It depends on how alleles combine during fertilization.

If by chance, when crossing two medium-legged animals, the allele combination only occur between L and l (not L-L and not l-l), then it is possible to have only medium-legged animals.

There are 50% chances of having only medium-legged chabos.

Incomplete dominance is influencing the leg length.

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Answer:

A testable question is one that can be answered by designing and conducting an experiment.

Explanation:

Testable questions are always about changing one thing to see what the effect is on another thing.

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Snails have both female and male reproductive cells ( as they are hermaphrodite).

The majority of these terrestrial gastropod (snails) mollusks are hermaphrodites, which is the first thing you should be aware of. Any organism that possesses both male and female reproductive organs and is able to generate both eggs and spermatozoa is referred to as a hermaphrodite. The snails appear to be both male and female at the same time.

However, there are several exceptions. The Pomatiid family of snails differs from its members in that each snail belongs to either a male or a female gender depending on the presence or absence of reproductive organs.

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Answer: i think the answer is B enzyme

Explanation: i hope this helps

Answer:

Explanation:

To collect information you need to read and understand why it works and make an analysis of what you understood about the information in the table

and this is how you find the trends. A trends can often be found by establishing a line chart. A trendline is the line formed between a high and a low. If that line is going up, the trend is up. If the trendline is sloping downward, the trend is down.

Answer:

0.040s

Explanation:

f=1/t

Answer:

An ocular lens consists of one to three lenses and is also provided with a mechanism, called a field stop, that removes unnecessary reflected light and aberration. Different types are available according to the magnification they provide, such as 7x and 15x.

mRNA vaccines work by introducing a small piece of the virus's genetic material, called messenger RNA (mRNA), into the body. This mRNA is specifically designed to instruct cells in the body to produce a protein that is found on the surface of the virus.

Once this protein is produced, the body's immune system recognizes it as foreign and produces an immune response, including the production of antibodies and immune cells that specifically target this protein on the virus.

This creates a specific and targeted immune response that can protect against future infections by the virus, establishing adapted immunity.

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Answer:

See explanation

Explanation:

Fossil records contain an extensive detail of the evolution of various species on earth which have been preserved in the remains of these organisms or imprints that organisms that existed long ago must have left  in sedimentary rocks.

Fossil records basically tell us about the past. They tell us about the species that once existed on earth. They also tell us how long these species existed and how the were related to other species.

This information help us to work out how these organisms lived and the environment where they lived.

Answer: B

Species remain the same over time.

Explanation:

Answer:

pH of stomach is more acidic ranging from 1.5 to 3.5 meanwhile intestine is more on the neutral side ranging from 6 to 7.4

Explanation:

as far as it is concerned about digestion relation between the two stomach and intestine is  that stomach has more acidic pH because most of the the digestion occurs in stomach. the more acidic ,the more quickly food will be broken down to essentials .like an upset stomach as it overdoes the digestion as for the intestine it is mainly responsible for absorption of already digested food..

Answer:

Most plants absorb water through the roots. Land plants get almost all the water they need from the soil. The amount of water available in the soil varies according to its porosity and its degree of desiccation. A large proportion of water is retained by cohesion forces between the particles. When the water is in the roots it moves inside the plant through the xylem. The xylem is the transport system that carries water to the entire plant.

Explanation:

The xylem connects all parts of the plants (from the roots to the stems and from there to the leaves). The water in the xylem creates a gigantic chain of molecules that adhere to each other, just like they adhere to the xylem. For plants to transport water from roots to leaves and use it in other functions, other structures called stomata are required. Stomata are small pores in leaves that plants can open and close as needed. If they open, the water moves out of the stomata and evaporates into the air. This occurs because the water molecules diffuse, from the humid air inside the leaf, to the much drier air surrounding the leaf. The loss of water through the stomata together with the high cohesion of the water particles and the resistance of the root "stress" the water column. This causes the water potential of the roots to decrease and the surrounding water enters the plant.Each stoma is made up of two occlusive cells. When these cells are turgid, a hole opens between them; when the cells relax, the hole disappears. The turgor pressure depends directly on the inlet or outlet of the water. This movement, in turn, depends on the concentration of solutes within the cell.

One of the primary functions of olive oil in the body is storing energy. Option B is correct.

Olive oil, like all oils and fats, is a concentrated source of energy. When we take olive oil, our bodies break it down into fatty acids which can be used as a source of fuel to produce energy for our cells. This energy can be used for a variety of functions, such as muscle movement, and digestion

The fatty acids in olive oil are also important for the absorption of certain vitamins, such as vitamin A, D, E, and K, which are fat-soluble and require dietary fat for absorption. In addition, our bodies can store excess energy from olive oil and other sources as fat tissue, which can be used as a reserve energy source when needed.

However, it is important to consume olive oil in moderation as it is high in calories and can contribute to weight gain if consumed in excess.

Hence, B is the correct option.

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--The given question is incomplete, the complete question is

"The picture shows a carafe of olive oil. What is one of the primary functions of this food in the body? A) building proteins B) storing energy C) providing structure to cell walls D) carrying genetic information."--