Extracellular matrix proteins are produced by ribosomes in which part of a eukaryotic cell?
A) lysosomes
B) cytoplasm
C) nuclear envelope
D) golgi apparatus
E) rough ER

☁️ Answer ☁️

"Tornadoes and hurricanes appear to be similar in their general structure. Both are characterized by extremely strong horizontal winds swirling around the center, strong upward motion dominating the circulation with some downward motion in the center. "

1. Death

2. strong horizontal winds swirling around the center

3strong upward motion dominating the circulation with some downward motion in the center.

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The following would not be a teratogen among cigarettes, lead, rubella (german measles), and steak is steak. Teratogens are substances that interfere with prenatal development and can lead to birth defects. Cigarettes, lead, and rubella are known teratogens that can cause significant harm to a developing fetus. However, steak is not a teratogen.

Cigarettes are a teratogen because they contain harmful chemicals that can cross the placenta and interfere with fetal development. These chemicals can increase the risk of low birth weight, premature birth, and birth defects such as cleft palate and heart defects.

Lead is also a teratogen because exposure to high levels of lead during pregnancy can lead to developmental delays, learning disabilities, and other cognitive impairments in children. Lead can be found in contaminated water, soil, and household items such as paint and dust.

Rubella, or German measles, is another teratogen that can cause severe birth defects if a woman becomes infected during pregnancy. Rubella can cause deafness, blindness, heart defects, and intellectual disability in a developing fetus.

Steak, on the other hand, is not a teratogen. While some types of food, such as undercooked meat and raw eggs, can be harmful during pregnancy due to the risk of foodborne illness, properly cooked steak is not a teratogen and does not pose a risk to fetal development.

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The type of membrane protein that is affected in cystic fibrosis is a chloride ion channel.

Cystic fibrosis is an inherited condition in which the mucus in the body becomes thick and sticky. It can cause breathing difficulties and frequent infections, among other symptoms. Because the mucus is thicker than normal, it can obstruct the ducts of the pancreas, preventing digestive enzymes from reaching the small intestine.Cystic fibrosis is an autosomal recessive genetic disorder.

This means that in order to inherit the disease, a person must inherit two copies of the mutated gene, one from each parent.

Cystic fibrosis is caused by a mutation in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. The CFTR gene provides instructions for making a protein called the cystic fibrosis transmembrane conductance regulator. This protein functions as a chloride ion channel, which helps regulate the flow of salt and fluids in and out of cells.

However, in people with cystic fibrosis, the CFTR protein is either missing or not functioning properly due to a genetic mutation. As a result, the salt and water balance is disrupted, leading to the production of thick, sticky mucus that clogs the airways, digestive tract, and other ducts in the body.

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On June 21st: The declination of the Sun is 23.5 degrees north.

On March 20/2020: It is the longest day of the year in the Northern Hemisphere.

On January 10th, on the Equator: The Solar Altitude is 90 degrees.

On March 29th: The day and night are 12 hours long anywhere between 0 and 60 degrees latitude in both hemispheres.

On July 3rd: The latitude of the tangent rays of the Sun is 23.5 degrees north.

On December 20th: The Tropic of Capricorn (23.5 degrees south) is the farthest distance from the Pole where the sun rays are tangent to Earth's surface.

On January 30th, the solar altitude in Central California (about 38 degrees N): [Choose]

On April 22nd, the solar altitude in Seattle (about 48 degrees north): [Choose]

Explanation to the above short given answers are written below,

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Answer:

Explanation:

(1) the potential for a species to increase in number,

(2) the heritable genetic variation of individuals in a species due to mutation and sexual reproduction,

(3) competition for limited resources

(4)  the proliferation of those organisms that are better able to survive and reproduce in the environment

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A zoologist notice about birds caged indoors if she were looking for clues that they follow a biological rhythm in natural settings she would observe the birds' behavior closely to detect if they follow a circadian rhythm which is a biological process that occurs within a 24-hour cycle.

The zoologist might notice that the caged birds appear to be restless or sleepless, suggesting that they are uncomfortable or out of sync with their natural rhythms. This is because birds are diurnal animals and require sunlight for proper bodily functions. The zoologist might also observe that the caged birds become increasingly agitated or active during certain times of the day.  This would suggest that the birds are naturally active during those periods in the wild and have maintained this behavior in captivity, indicating a biological rhythm.

Furthermore, the zoologist may notice changes in the bird's behavior in response to changes in lighting, as light is a key regulator of biological rhythms. Birds require a certain amount of light exposure during the day to function properly, and the absence of natural light could disrupt their natural rhythms and cause adverse effects. In conclusion, if a zoologist were looking for clues that birds follow a biological rhythm in natural settings, she might observe changes in the birds' behavior in response to light, as well as changes in activity levels at certain times of the day.

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"The classification of each bone according to its type (long, short, flat, irregular) and whether it belongs to the axial or appendicular skeleton:

Bone                          Type                              Axial Skeleton                          Appendicular Skeleton

Sternum                           Flat                                   ✔

Radius                           Long                                                                                         ✔

Parietal bone                   Flat                                   ✔

Phalanx (single bone)   Long                                                                                          ✔

Vertebra                           Irregular                            ✔

Long Bones: The bones that are longer than they are wide are called long bones. These bones are found in the appendicular skeleton of the body. The Radius bone is an example of a long bone.

Short Bones: Short bones are as long as they are wide. They are primarily found in the wrist and ankle. The phalanx bone is an example of a short bone.

Flat Bones: Flat bones are thin and flat. These bones protect vital organs and provide a surface for muscle attachment. The Sternum bone is an example of a flat bone.

Irregular Bones: Irregular bones have irregular shapes. These bones play a vital role in protecting the nervous system and the organs in the thorax. The Vertebra bone is an example of an irregular bone.

Axial Skeleton: The axial skeleton consists of bones that lie along the longitudinal axis of the body. The Vertebra and Parietal bone is a part of the axial skeleton.

Appendicular Skeleton: The appendicular skeleton consists of bones that lie along the appendages of the body. The Radius and Phalanx are a part of the appendicular skeleton.

Bones in the human body serve several important functions:

1. Support: Bones provide structural support to the body, giving it its shape and framework. They form the rigid framework that supports and maintains the body's posture.

2. Protection: Bones act as protective coverings for vital organs. For example, the skull protects the brain, the rib cage protects the heart and lungs, and the vertebrae protect the spinal cord.

3. Movement: Bones, along with joints, muscles, and tendons, enable movement. They act as levers that are moved by muscle contractions, allowing us to walk, run, lift objects, and perform various activities.

4. Blood Cell Production: Bones house bone marrow, where red and white blood cells, as well as platelets, are produced. Red blood cells carry oxygen, white blood cells help fight infections, and platelets are essential for blood clotting.

5. Mineral Storage: Bones store minerals, primarily calcium and phosphorus, which are crucial for maintaining the body's mineral balance. When the body needs these minerals, bones release them into the bloodstream.

6. Energy Storage: Yellow marrow, found in the central cavities of long bones, stores fat as an energy reserve for the body.

7. Body Support and Balance: Bones provide support for soft tissues and muscles, allowing them to function effectively. They also contribute to maintaining balance and stability.

8. Sound Transmission: Bones in the middle ear, such as the ossicles (malleus, incus, and stapes), transmit sound vibrations from the outer ear to the inner ear, facilitating hearing.

These functions collectively make bones essential for the body's structure, movement, protection, and overall physiological well-being.

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Answer: that they all have the bones used to make their movements so they can live and survive on there own.

Explanation:

The correct mRNA sequence transcribed from the given DNA sequence is: 5' UCCCUAGCUACGGGAUUUUCUCAAUAUGUAAUUGACCUCCGCAAUGGGGCUCC 3' Here option B is the correct answer.

To determine the correct mRNA sequence transcribed from the given DNA sequence, we need to apply the rules of DNA transcription. During transcription, the DNA sequence is used as a template to synthesize an mRNA molecule, with the RNA base uracil (U) substituting for thymine (T) in the DNA.

The given DNA sequence is:

5' GGGATCGATGCCCCTTAAAGAGTTTACATATTGCTGGAGGCGTTAACCCCGGA 3'

To transcribe this DNA sequence into mRNA, we replace each DNA base with its RNA counterpart:

G (Guanine) → C (Cytosine)

C (Cytosine) → G (Guanine)

A (Adenine) → U (Uracil)

T (Thymine) → A (Adenine)

Applying these conversions, we get the mRNA sequence:

5' CCCUAGCUACGGGAUUUUCUCAAUAUGUAAUUGACCUCCGCAAUGGGGCUCC 3'

Therefore, option b) 5' UCCCUAGCUACGGGAUUUUCUCAAUAUGUAAUUGACCUCCGCAAUGGGGCUCC 3' represents the correct mRNA sequence transcribed from the given DNA sequence.

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Complete question:

Which of the following represents the correct mRNA sequence transcribed from the given DNA sequence?

a) 5' GGGATCGATGCCCCTTAAAGAGTTTACATATTGCTGGAGGCGTTAACCCCGGA 3'

b) 5' UCCCUAGCUACGGGAUUUUCUCAAUAUGUAAUUGACCUCCGCAAUGGGGCUCC 3'

c) 5' CCCUAGCUACGGGAUUUUCUCAAUAUGUAAUUGACCUCCGCAAUGGGGCUCC 3'

d) 5' GGGATCGATGCCCCTTAAAGAGUUUACAUUAUUGCUGGAGGCGUUAACCCCGGA 3'

Answer:

Explanation:

a) eukaryotes have membrane bound organelles like nuclei while prokaryotes don't

b) autotrophs = producers that can make their own food while heterotrophs consume producers or other consumers

c) Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function

Answer: To shrink fat cells, you need to eat fewer calories than your body needs.

CREDIT: healthyeating

Answer:

eat healthily and exercise properly

Explanation:

The relationship between UV exposure and colony formation is negative.

There is a negative relationship between UV exposure and colony formation in trp1-289 yeast plated on the SD medium. This is because UV exposure can cause DNA damage, which can lead to decreased viability and colony formation in yeast.

The UV exposure time would be placed on the x-axis, representing the independent variable. The number of trp1-289 colonies on the SD medium would be placed on the y-axis, representing the dependent variable.

The relationship between UV exposure and colony formation might not be linear due to several factors. The relationship might exhibit a sigmoidal or exponential decay curve.

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Answer:

The abiotic characteristics of an ecosystem that affects man includes: Land surface, rainfall and relative humidity.

Explanation:

In the ecosystem, man occupies the terrestrial habitat which is affected by the abiotic factors listed above.

Abiotic (non- living) factors determine the type of biotic (living) community that is found in an ecosystem. These factors include Land surface, rainfall and relative humidity, just to mention a few.

--> LAND SURFACE: This is responsible for the marked variation in the vegetation of a place. For example, a mountain in the tropics may have a rain forest vegetation at it's base and an afroalpine vegetation near its peak. The gradient of the slope affects the growth of organisms. A steep slope encourage fast run - off of water and therefore encourages erosion, which results in shallow and infertile soil. This in turn AFFECT man's farming activities as there would be little to no crop yield.

--> RAINFALL: Water is a very important abiotic factor that affects life. The main source of water to terrestrial habitat is rainfall. When rain falls, a greater percentage of it sinks into the soil while the rest run- off into water bodies. Water is absorbed by root hairs into the plant and used for photosynthesis to produce food. The absence of rainfall in the environment of man could lead to drought which AFFECTS man negatively.

--> RELATIVE HUMIDITY: This is a measure of the amount of moisture in the atmosphere. It's usually high in hot wet regions. It affects the rate at which water evaporates from the body surfaces of organisms. Low relative humidity cause more water (sweat) to evaporate from body surfaces giving the human body a cooling effect. But in high relative humidity, the sweat cannot evaporate leaving the body feeling hot and sticky. This AFFECTS man as the body tries to cool off in a harder way by increasing rate of respiration and depth of blood circulation.

The correct option that best describes how a channel protein moves materials across the membrane is B) They provide a passage for specific molecules to cross the membrane via passive transport.

Channel proteins are integral membrane proteins that form channels or pores in the cell membrane. These channels allow the passive transport of specific molecules or ions across the membrane down their concentration gradient. This process is called facilitated diffusion, where the molecules move from an area of higher concentration to an area of lower concentration without the need for energy input. The channel proteins provide a selective passage for these molecules, enabling their movement across the membrane.

Therefore, the correct answer is B) They provide a passage for specific molecules to cross the membrane via passive transport.

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A. La transferencia de energía no es la misma entre las tres pruebas del experimento debido a la variación en la concentración de vinagre.

La concentración del vinagre influye en la velocidad y la eficacia de la reacción química. El vinagre es una solución diluida de ácido acético en agua, y el ácido actúa para disolver la capa externa de carbonato de calcio que compone la cáscara del huevo. Cuanto mayor sea la concentración de ácido acético en el vinagre, más rápida será la reacción y mayor será la transferencia de energía. Por lo tanto, se puede observar que la prueba que utilizó la concentración de vinagre al 10% tuvo una transferencia de energía mucho más alta que las otras dos pruebas.B.

El aparato se puede modificar para medir con mayor exactitud la transferencia de energía en cada reacción. Esto se puede hacer utilizando un calorímetro, que es un dispositivo que se utiliza para medir el calor de las reacciones químicas o los cambios físicos. El calorímetro consta de un recipiente aislado que contiene una muestra y se coloca en un baño de agua. Se mide la temperatura del agua antes y después de la reacción, y la diferencia en la temperatura se utiliza para calcular la cantidad de calor absorbido o liberado por la muestra.

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Answer:

Every offspring does not look alike they change with the generations

Explanation:

The peptide CAT is expected to have the lowest pI due to its composition of basic amino acids.

The pI of a peptide is influenced by the ionizable amino acid residues it contains. CAT, among the given peptides, is composed mainly of basic amino acids such as arginine and lysine. These basic amino acids have higher pKa values for their side chains, resulting in a net positive charge at lower pH values.

The pI is the pH at which a peptide carries no net electrical charge, and in the case of CAT, it is likely to be lower due to the prevalence of basic amino acids. Peptides with acidic or neutral amino acids would have higher pI values, as their side chains have lower pKa values and tend to be negatively charged at lower pH values.

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The question is inappropriate, the correct question is:

You aim to chemically synthesize four peptides with the following one-letter amino acid sequences: TIGER, PANTHER, CHEETAH, and CAT. A.Which one of these peptides will have the lowest pl? Give a reason for your answer. You are not required to calculate the pls of the peptides to answer this question.

Littoral zones are more likely to contain vegetation than riparian zones. This statement is TRUE.

Littoral zone: This is the region of a body of water close to the shore. The littoral zone is the area of the lake where the rooted plants are able to grow. It is the area of the lake where sunlight penetrates all the way to the sediment and allows aquatic plants to grow. Therefore, the littoral zone is more likely to contain vegetation than riparian zones. Riparian zone: This is the area adjacent to a stream or river. Riparian zones are unique and provide a diverse range of habitats for different species. The vegetation in this zone is very important for the proper functioning of stream and river ecosystems. While it may contain vegetation, the likelihood is lower than that of the littoral zone.

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Answer:

East To West

Explanation:

Explanation:

DNA is a long molecule that contains our unique genetic code.DNA is composed of two strands that wrap around each other to form a double helix shape.

Genes are sections of DNA that contain the set of instructions to produce one specific molecule in your body, usually a protein. These proteins control how our body grows and works; they are also responsible for many of our characteristics, such as our eye colour, blood type or height.

Chromosomes are bundles of tightly coiled DNA located within the nucleus of almost every cell in our body. Humans have 46 chromosomes . We inherit one set of 23 chromosomes from our mother and one set of 23 chromosomes from our father. So we have two sets of 23 chromosomes or 23 pairs.

Answer:

Gravitational Force depends on two factors:

1. Product of mass of two object

2. Square of distance between their centers

Mathematically,

  F = G *(m1* m2)/d²

Explnation:

Answer:

B

Explanation:

Desalination remains expensive, as it requires enormous amounts of energy. The correct answer is b) The process uses fuel that is expensive.

Saline water which is typically sea water, is artificially transformed into fresh water through a process called desalination. Reverse osmosis and distillation are the two most used desalination techniques. There are several approaches. Although each has benefits and drawbacks, they are all useful.

The issue is that it takes a lot of energy to desalinate water. When salt is dissolved in water, it forms strong chemical bonds that are challenging to break. Desalinating water may be rather expensive since both the energy and the technology required are costly.

Desalination turns seawater into freshwater by removing the salt, however, it also has certain unfavorable effects on the ecosystem. Desalination facilities release trash and poisonous chemicals that are bad for the environment and animals. The procedure can also increase the salinity of saltwater, which has an impact on fish.

Therefore, the correct answer is b).

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Answer:

Explanation:

Bionomial nomenclature helps scientists by helping them classify organisms. This would be a two-name system that scientists use that describes the genus and species of the organism.