nucleotides are the basic unit of which macromolecules
nucleic acids is the basic unit of a nucleotides
what will likely cause an inscription on a marble gravestone to become more difficult to read over time
To maintain the current population density, which of the following must occur?
A. The death rate must be higher than the birth rate
B. The birth rate must be higher than death rate
C. The birth rate and death rate must stay the same with migration at 0
D. The birth rate and death rate must stay the same while migration can continue to rise
Hmm, well I think the answer is C.
I would say Answer A & B are incorrect because if the death rate was higher, soon there would be 0 people on earth. And B is incorrect because soon there would be overpopulation, the death rate would only slow this factor down.
So I believe C is the best answer out of C & D
Hope this helps you, Have a great day!
Final answer:
To maintain current population density, the birth rate and death rate must remain the same with no migration, allowing the population to remain stable.
Explanation:
To maintain the current population density, the correct option is C. The birth rate and death rate must stay the same with migration at 0. This scenario ensures that the population remains stable over time. In the demographic transition model, stages represent different combinations of birth and death rates affecting population size. In Stage 4, for example, the birth rate reaches the same low level as the death rate, which results in zero population growth. This aligns with the understanding that equal birth and death rates, without the influence of migration, keep the population density steady. Factors such as population growth rate, demographic transition, and the balance between births and deaths are critical in understanding how populations change over time.
Select the correct answer from each drop-down menu.
The _____ gets rid of cell waste by breaking down large molecules into smaller ones for the cell to excrete. The ______ helps these waste molecules exit the cell.
FIRST BLANK
-lYSOSOME
-RIBOSOME
-NUCLEUS
SECOND BLANK
-CELL MEMBRANE
-ENDOPLASMIC RETICULUM
-GOLGI APPARATUS
The Lysosome gets rid of cell waste by breaking down large molecules into smaller ones for the cell to excrete. The Cell membrane helps these waste molecules exit the cell.
Lysosomes are organelles that are responsible for breaking down large molecules into smaller ones, and they help the cell to get rid of waste products.
Lysosomes contain a variety of enzymes that are capable of breaking down proteins, lipids, carbohydrates, and nucleic acids. Once these molecules have been broken down, they are released into the cytoplasm of the cell.The cell membrane is responsible for controlling what enters and exits the cell. It is selectively permeable, which means that it allows some molecules to pass through while preventing others from doing so.Therefore, Lysosome and Cell membrane are the correct choices that fits in the blanks.
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What is fluid mosaic model
The structure of a substrate P strongly resembles substrate Q. In an experiment, By mistake P was used instead of Q as a substrate for the enzyme, Q-ase. The results obtained were identical to the results that would have been obtained using substrate Q. Why did substrate P work in place of substrate Q?
A) P and Q are coenzymes
B) P and Q are holoenzymes
C) P and Q have similar binding properties
D) P and Q have different binding properties
The structure of the substrate P and Q is mostly similar. This strong structural similarity would mean that the binding properties of these two different substrates might also be similar. The production of similar results by using substrate P instead of the substrate Q ensures this similarity. The substrate P binded with the enzyme similar to the substrate q and resulted in the same products.
Hence, the correct answer is 'Option C- P and Q have similar binding properties'.
True or false a doubled chromosomes has one original and one copy
explain how the structure of a cellouse molecule relates to the molecules function
The main component of cell walls is cellulose. The cellulose make stems, leaves and branches. So it play an important role in building of tissues. ... The molecules of cellulose have hydroxyl group that form hydrogen bonding with other cellulose and provide support to plant.
what us the role of ATP in the cells plz help
Transporting enrgy wihin the cells
Absorbing water during photosynthesis
Transporting oxygen for resperation
Absorbing light energy for photosynthesis
which of these is an effect of an algal bloom ?
A. Bacteria are introduced to break down hydrocarbons in an oil spill .
B. materials containing metal are toxic to organisms that live in them .
C. the mercury contained in fish builds up in animals that eat the fish .
D. An increase growth in microorganisms results in oxygen depletion
(apex)
The correct answer is option D
The growth of algal bloom is caused due to excessive runoff rich in the nutrients like nitrogen and phosphorous. This run off comes from the agricultural field.
These nutrients aids in the growth of the algae(microorganisms) in large number. This growth forms a layer on the water body and use the oxygen present in the water and makes the water oxygen deficient.
Answer:
An increase growth in microorganisms results in oxygen depletion
Explanation:
just took it
I need help with all of this!!!!!!!!!!!!!!!!
Do a strip of copper and a cube of copper have the same mass and the same volume
Thus, the temperature of a substance can be determined by placing the .... All three have the same temperature, and they barely fit inside each other. ... The radiator is made of copper, and the coolant has a coefficient of volume expansion of . .... When ice cubes are used to cool a drink, both their mass and temperature
Final answer:
A strip of copper and a cube of copper do not necessarily have the same mass and volume. Their mass and volume depend on their respective shapes and sizes, even though they have the same density.
Explanation:
Whether a strip of copper and a cube of copper have the same mass and volume depends on their dimensions and densities. The mass of an object is related to its volume and density. Since both objects are made of copper, they have the same density. However, the mass and volume of each piece would vary based on their shapes and sizes.
To determine the mass of the copper pieces, one would need to weigh them, as mass is a measure of the amount of matter in an object.
To find the volume, for the strip, one might need to use water displacement or calculate it based on its dimensions, while for the cube, the volume can be found by cubing the edge length. If both pieces have the same mass, they will not necessarily have the same volume due to the different shapes.
In ecology,a population is defined as all the
A) members of a single species in the biosphere
B) members of a given genus inhabiting a given area
C) members of a single species ihabiting a given area
D) abiotic and biotic factors in a given location
D) abiotic and biotic factors in a given location.
how do u calculate these numbers from least to greatest 6.84, 8 5/7, 6.34, 6 1/4, 8 3/10, 8.15?
Answer:
6.25<6.34<6.84<8.15<8.3<9.142
Explanation:
The best way to compare these numbers is to convert all these numbers into the same form either fraction or decimal.
I will convert all the numbers into decimal.
[tex]6.84 \\8\frac{5}{7} \\6.34\\6\frac{1}{4} \\8\frac{3}{10} \\ 8.15[/tex]
[tex]8\frac{5}{7} \\= \frac{64}{7} \\= 9.142[/tex]
[tex]6\frac{1}{4} \\= \frac{25}{4} \\= 6.25[/tex]
[tex]8\frac{3}{10} \\= \frac{83}{10} \\= 8.3[/tex]
On arranging all the decimals numbers from in ascending order, we get -
[tex]6.25<6.34<6.84<8.15<8.3<9.142[/tex]
What makes up the cell membrane
The cell membrane is made up of a phospholipids that are arranged into two layers which are called lipid bilayer.
The cell membrane is composed of a phospholipid bilayer with embedded proteins, carbohydrates, and cholesterol. It is semi-permeable, allowing selective transport of substances.
The hydrophobic (water-repulsing) tails of the phospholipids face internal, while the hydrophilic (water-drawing in) heads face outward.
Implanted inside this bilayer are different proteins that carry out fundamental roles. These proteins can either traverse the whole film or connect to its surface. Also, carbs are frequently connected to these proteins on the film's external surface, helping with cell acknowledgment and correspondence. The membrane is able to control the flow of water, organic molecules, and ions through it because of this property, preserving the internal environment of the cell.In outline, the cell layer is comprised of a phospholipid bilayer with implanted proteins, carbs, and in creature cells, cholesterol. This design safeguards the cell's inward parts as well as controls the development of substances all through the cell.
Describe three processes that contribute to chemical weathering of the Earth
Chemical weathering is a process in which rocks erosionate due to chemical reactions:
- High chemical levels: when levels of chemical elements increase for any reason, these can contribute to chemical weathering.
- Humans: the chemicals humans use most of the time penetrate on the earths surface also contributing to chemical weathering.
- Chemical reactions: when certain chemical reactions occur they can oxidate or erode their surroundings contributing to chemical weathering.
Hope it helped,
BioTeacher101
Which statements describe what geologists study? Check all that apply.
oxygen and other gases that surround Earth.
the solid parts of Earth.
the inside of Earth.
living things on Earth.
the forces that affect Earth.
the rocks and minerals that make up Earth.
The statements that describe what geologists study are:
The solid parts of Earth The inside of Earth The forces that effect Earth The rocks and minerals that make up EarthA geologist is a person that studies the things, characteristics and features that make up the earth. They study the geology of the earth.
Geology is the study of the things that make up the earth. It is also known as geoscience .
Some functions and roles of a geologist include:
Studying the insides of earthStudying of rocksStudying the history of the earthStudying the things that make up the earth, etcAs a result of this, we can see that a geologist studies the things that make up the earth and when doing this, he has a direct relationship with geology.
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What causes ocean water to be colder at the poles than at the equator ?
That answer is know to be C. Because the sun affects it most but the equator has an affect because of the location. For ex. if its close to Antarctica its colder! like the arctic ocean is absolutely frigid! Hope that this is helpful!
Answer:
Its C
Explanation:The other guy was close but wrong, i got a 100apex score
Two species of frogs mate with each other. The embryo dies after a few cell divisions. What kind of reproductive isolation does this example represent? A. temporal isolation B. mechanical isolation C. postzygotic isolation D. gametic isolation
Answer:
The example of two species of frogs mating with each other, but the embryo dying after a few cell divisions, represents postzygotic isolation.
Postzygotic isolation refers to barriers that prevent the successful development or reproduction of hybrid offspring after mating between different species has occurred. In this example, the embryo dies after a few cell divisions, indicating that there is a barrier preventing the hybrid offspring from developing into a viable individual.
This type of reproductive isolation occurs after fertilization has taken place and can be caused by genetic incompatibilities between the two species. The genetic differences between the two species prevent the hybrid embryo from developing normally, leading to its death.
In contrast, temporal isolation refers to species mating at different times, mechanical isolation refers to physical incompatibilities preventing mating, and gametic isolation refers to barriers preventing successful fertilization. These types of isolation occur before fertilization takes place, whereas the example given in the question occurs after fertilization.
To summarize, the example of two species of frogs mating with each other, but the embryo dying after a few cell divisions, represents postzygotic isolation because it involves barriers preventing the successful development of hybrid offspring after fertilization has occurred.
Compare the importance of both biotic and abiotic factors to an ecosystem
Answer:
A biotic factor is a living thing that has an impact on another population of living things or on the environment. Abiotic factors do the same thing, but they are non-living. Together, biotic and abiotic factors make up an ecosystem. To survive, biotic factors need abiotic factors. Hope it helps you .
Explanation:
What percent of solar radiation is filtered by clouds and may cause sunburn on cloudy days?
22 percent of solar radiation is filtered by clouds and may cause sunburn on cloudy days.
questioned answered by
(jacemorris04)
Answer:
40%
Explanation:
Clouds are able to retain only 40% of the solar radiation, you still can get a sunburn if you don't protect your skin.
Clouds could be dangerous because they can make a magnifying glass effect with the sun, that means, they could cause a bigger impact upon the skin.
That's why is recommended to use sunscreen lotion every day even if it's cloudy.
Which is the highest level of organization within an organism?
The highest level of Organization within an Organism is Biosphere
how is e.coil like a paramecium
Identify the correct statement about differences between rough and smooth endoplasmic reticulum (ER).
The rough ER has ribosomes on its surface meanwhile smoothe ER does not.
The rough endoplasmic reticulum (RER) has ribosomes on its surface, which makes it appear bumpy and is involved in protein synthesis, whereas the smooth endoplasmic reticulum (SER) is smooth as it lacks ribosomes and is involved in lipid synthesis, calcium storage, and detoxification.
Explanation:The correct statement about the differences between rough and smooth endoplasmic reticulum (ER) is that the rough endoplasmic reticulum (RER) is studded with ribosomes, giving it a textured, bumpy appearance due to these protein-synthesizing organelles. In contrast, the smooth endoplasmic reticulum (SER) lacks ribosomes on its surface, resulting in a smoother appearance.
Functionally, the RER is primarily involved in the synthesis of proteins that are either secreted from the cell, incorporated into the cell's plasma membrane, or destined for lysosomes. The newly synthesized proteins are transported from the RER in transport vesicles that bud off from the ER. Also, the RER's membrane is continuous with the nuclear envelope, facilitating the transport of the mRNA. Meanwhile, the SER has various roles including lipid and steroid hormone synthesis, calcium ion storage, and detoxification of drugs and poisons.
It is important to note both RER and SER are essential to cell function, and they collaborate with each other and other cell structures, like the Golgi apparatus, to coordinate the synthesis and distribution of cellular products.
the water cycle, like the other cycles, is a “closed system.” what does that say about the importance of keeping the water on earth free from population
Like you stated, the water cycle is a closed sytem.Therefore, it's never ending it will keep on going, and repating it's self forever.So we need to keep it clean because, we use water for food, dishes, etc which is a pro.The con of trying to keep water is fresh is the fact we bathe, and clean with water. Even though we bathe, and stuff with water we can try to keep water clean.Even though water goes through a process and people say the water system cleans water doesn't mean it's true.The best ting we can do to keep free from population is use less water, and try keeping large, small bodies of water clean.
The water cycle is crucial for Earth's ecosystems, climate, and human survival, emphasizing the importance of preserving water from pollution. Urban development can disrupt this cycle, and over-use and pollution of freshwater threaten the limited supply, affecting both the environment and over a billion people worldwide.
The water cycle, also known as the hydrologic cycle, is a closed system where Earth's water continually moves and changes states between liquid, vapor, and ice. However, this cycle is considered 'closed' in the context that the total amount of water on Earth remains relatively constant, with minimal loss and gain from the outer space. The importance of keeping water free from pollution is vital, as over-use and pollution of freshwater threaten the limited supply that humans and ecosystems depend on. A healthy water cycle is essential for ecosystem dynamics, as it influences climate, environmental conditions, and supports life and ecosystems on the planet.
Urban development contributes to the disruption of the water cycle by stripping plant cover, creating impervious surfaces that prevent precipitation infiltration, leading to erosion and flooding downstream. Additionally, water cycling involves significant energy transfer, crucial for maintaining Earth's energy balance. The importance of the water cycle and the necessity to keep water free from pollution cannot be overstated, given that more than a billion people lack adequate freshwater access, and the situation may worsen with the growing human population.
PLEASE HELP ON LAST 3 40 POINTS
Where low tide occurs?
Low tides occur between two high tide areas. They form 90 degree angles with the moon.
Where high tide occurs?
Parts of the earth when facing the moon, those parts experience the pull force, cause high tides. They occur in the areas closest to and farthest from the moon.
How often high tide occurs?
Hide tides occur twice a day. Coastal areas experience high tides every 12 hours.
Which type of interest rate gives the most accurate measure of the amount a borrower will really pay in interest, because it takes into account compounding that happens during the year? (Select the best answer.) Question 4 options: FICO APR APY FCRA
I believe that it is APY. APY incorporates the additional complication of compound interest...
The APY (Annual Percentage Yield) is the interest rate that best measures the actual cost a borrower will pay, as it takes into account the compounding of interest throughout the year. It is more accurate than APR for representing the true cost of a loan.
Unlike the Annual Percentage Rate (APR), which might not reflect the impact of compounding, APY gives a more accurate representation. The APY is especially useful for comparing different financial products to understand which one is more expensive or offers a better return on investment, as it includes both the interest rate and the frequency of compounding within a year.
It's crucial to note that FICO, FCRA, and APR are not themselves interest rates. FICO is a type of credit score, APR typically represents the cost of borrowing without compounding, and FCRA refers to the Fair Credit Reporting Act, which regulates the collection of credit information.
Omg it’s aggravating me so much lol can somebody help me
Hey there!
the correct answer choices would be - B, C, D.
Hope this helps!
Piper touches a block of ice , and she feels that it's very cold. How does she feel the sensation of cold ?
Answer:
By the helps of sensation that he felt because of the presence of nerve endings on the tip of finger.
Explanation:
Finger tips contains nerve endings at the tip of every finger which sense the stimuli that is provided to the finger.
The sensation is transferred to brain by the help of nerves which sends the signal to brain that there is something cold.
The signals from the brain is transferred from the brain to finger to feel the cold sensation.
Of the three lipid types phospholipids are more similar to fats true or false
False.
Hope this helps!