The sperm floats through the water before eventually passing through a pore into a sponge cell of the same species and being carried to the female eggs.
Some animals return the fertilised eggs to the water after fertilisation. In the case of other species, the eggs stay in the sponge cell until the larvae emerge. One of the tiniest cells in the male body is the sperm. They consist of a lengthy tail, some mitochondria, and a tiny nucleus with little cytoplasm. Unlike the spherical form of the egg cell, they are straight. A sperm cell has a head, a middle section, and a tail.
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Determine if the following statement is true or false, and why. “Everyone who
carries a faulty allele develops a disease."
A. False, it should read, "No one who carries a faulty allele develops a disease."
B. False, it should read, "Some people who carry a faulty allele develop a disease, some
are carriers."
C. True
D. False, it should read, "No one who carries a faulty allele becomes a carrier."
The statement "Everyone who carries a faulty allele develops a disease" is absolutely false. This is because some people who carry a faulty allele develop a disease, some are carriers. Thus, the correct option is B.
What is an Allele?An allele may be defined as one or two or more alternative forms of a gene. An individual always inherits two alleles, one from each parent that shows characteristic traits for any given genomic location where such variation exists.
If the two alleles are the same, the individual is homozygous for that allele. While, if the two alleles are non-identical, the individual is heterozygous for that allele.
It is not possible that everyone who carries a faulty allele develops a disease because it depends on the expression of the disease, whether it is dominant or recessive, sexual or autosomal, etc.
Depending on the same principle, some are affected by the disease when both alleles have the same traits while some are carriers.
Therefore, the correct option for this question is B.
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Why is it important for an organ system to interact with other organ systems?
Answer:
Just as the organs in an organ system work together to accomplish their task, so the different organ systems also cooperate to keep the body running. For example, the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce.
Explanation:
Why is it important for soil to contain nitrogen, phosphorus, magnesium, and potassium??
Answer:
Soil is one of the main sources of nutrients needed by plants in order for them to grow. Nitrogen is used by plants for lots of leaf growth and good green color. Phosphorous is used by plants to help form new roots, make seeds, fruit and flowers. Potassium helps plants make strong stems and keep growing fast. It's also used to help fight disease. Magnesium is the central core of the chlorophyll molecule in plant tissue.
Explanation:
Hope this helped a little bit.
Answer:
Explanation:
1.Without enough nitrogen in the soil the plant cannot grow taller, or produce enough food.
2.phosphorus results in higher grain production, improved crop quality, greater stalk strength, increased root growth, and earlier crop maturity. That is important because crops take up phosphorus only from the soil solution.
3.The role of Magnesium in the soil is the central core of the chlorophyll molecule in plant tissue. Thus, if Mg is deficient, the shortage of chlorophyll results in poor and stunted plant growth. Magnesium also helps to activate specific enzyme systems.
4. Potassium is a critical nutrient that plants absorb from the soil, and from fertilizer. It increases disease resistance, helps stalks to grow upright and sturdy, improves drought tolerance and helps plants get through the winter. Potassium triggers activation of enzymes and is essential for production of (ATP).Both uptake of water through plant roots and its loss through the stomata are affected by potassium.
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please help
9. why Energy released by aerobic and anaerobic respiration in animal are not same.
Answer: Anaerobic respiration produces a relatively lesser amount of energy as compared to aerobic respiration, as glucose is not completely broken down in the absence of oxygen. In animal cells anaerobic respiration often occurs during exercise. The glucose does not get fully broken down in this process, so it does not release its full potential energy. Instead of carbon dioxide and water it breaks down to form lactic acid and a small amount of energy.
Explanation:
A quote often attributed to Mark Twain states, "What gets us into trouble is not what we don't know. It's what we know for sure that just ain't so." How does this relate to Pangaea and the Theory of Plate Tectonics? Ted talk
Answer:
Land masses moves as the movements of the tectonic plates causes the movement of the huge land masses like the Pangaea.
Explanation:
Mark Twain was a great American writer and lecturer. He is also known greatest humorist that the United States of America has ever produced.
By the statement of Mark Twain, it relates to the idea of the Pangaea and the theory of the tectonic plates. The very idea that the early continents were fitted together was being rejected by many for a long time as it was unbelievable for many that the huge land masses can move. But this turned out to be true later on.
As you move away from the equator...
A
the amount of blodiversity Increases because the average temperature increases.
B
the amount of blodiversity Increases because the amount of precipitation Increase
C
the amount of blodiversity decreason because the average temperature decreases.
D
the amount of blodiversity decreason because the amount of sunlight Increases.
Answer:
C
Explanation:
because light can travel through space, it cannot be a ____ wave
PLEASE ANSWER !!
Answer:
Sound
Explanation:
Sound waves are travelling vibrations of particles in media such as air, water or metal. So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate.
Answer:
Matter Wave
Explanation:
When light shines in an object,it is reflected absorbed or transmitted through the object depending on the objects material and the frequency (color) of the light... However, because light can travel through space it cannot be a matter Wave, like sound or water waves
Someone please help i’ll give brainliest.
They provide energy
Explanation:
pls help i am failing
methionine
lysine
phenylalanine
leucine
alanine
glycine
Tina is studying chipmunks in a field of 900 square meters. In 2020, she counts 194 chipmunks. In 2021, she counts 231 chipmunks. What is the population density of chipmunks in 2021?
Answer:the population density of chipmunks in 2021=256,666.667 per square kilometres
Explanation:
Population density is defined as the number of population per unit area of land
which can be expressed as
Population density =number of population/ land area
Since land area is usually given in square kilometres or square miles we convert 900 square meters to square kilometres
1 square kilometres =1000000 square meters
900 square meters=900/1000000=0.0009 square kilometres
Therefore, the population density of chipmunks in 2021= 231/0.0009 square kilometres =256,666.667 per square kilometres
The Go' for the reaction Citrate Isocitrate is +6.64 kJmol-1 . The Go' for the reaction Isocitrate α-Ketoglutarate is -267 kJmol-1 . Calculate the Go' for the conversion of citrate to α-ketoglutarate?
Answer:
ΔG°' for the conversion of citrate to α-ketoglutarate = - 273.64 kJmol-1
Explanation:
ΔG°' for Citrate is +6.64 kJmol-1
ΔG°' for Isocitrate is -267 kJmol-1
ΔG°' for the conversion of citrate to α-ketoglutarate = ΔG°' for product - ΔG°' for reactant
ΔG°' for the conversion of citrate to α-ketoglutarate = -267 kJmol-1 - (+6.64 kJmol-1)
ΔG°' for the conversion of citrate to α-ketoglutarate = - 273.64 kJmol-1
Someone please help me !!
Answer:
A
Explanation:
Describe the relationship between density and temperature
Answer:Density is directly proportional to pressure and indirectly proportional to temperature. As pressure increases, with temperature constant, density increases. Conversely when temperature increases, with pressure constant, density decreases.
Explanation: : )
What is magma made of???
Answer:
Water vapor, Carbon dioxide, and sulfur
Explanation:
Hope that helps
Answer:
Magma made of Water vapor, carbon dioxide, and sulfur.
Explanation:
Like solid rock, Magma is a mixture of minerals. The high temperatures and pressure under Earth's crust keep magma in its fluid state.
EMERGENCY!!!! which process is transcription and which one is translation????!!!!!!!!!!!
PLEASE HELP!!!!!!!!
Answer:
a is transcription and b is tranlation
Explanation:
A fixed pulley is classified as a simple machine because it changes which of the following aspects of the input force
1. ratio
2.direction
3.efficiency
4.magnitude
Answer:
3
Explanation:
3 efficiency there u go
why are plate movements of convection important in earth science
The chart below shows the average surface temperature or temperature range for each of the eight planets.
Planet Temperature
Mercury 100–700 K
Venus 735 K
Earth 287 K
Mars 227 K
Jupiter 112–165 K
Saturn 84–134 K
Uranus 53–76 K
Neptune 55–72 K
What conclusion can be drawn from this information?
Answer:
the temperature of planets closes to the sun is hotter than planets far away
Clams that are native to China are living in the San Francisco bay. How can these clams damage the bay ecosystem?
Answer:
Marine Invasive Species are animals or algae that have been translocated from their native region to California marine and estuarine waters. Invasive species are also called introduced, exotic, alien, nonindigenous or non-native.The introduction of NIS can cause harm to the ecosystem by displacing native species, becoming a human health dangerby introducing new diseases, or cause economic havoc on commercial, agricultural, or recreational activities by clogging waterways, and impacting navigation and recreation.
A prime example of the harm an invasive species can cause is Caulerpa taxifolia, also known as Killer Algae, a strain of green seaweed believed to be released from an aquarium directly into a water body or through a storm drain. The Killer Algae forms a dense carpet on any surface including rock, sand, and mud displacing native plants and animals, disrupts the natural food chain, and seriously impacting recreational and commercial fisheries.
Although Caulerpa was successfully eradicated from California marine waters, few eradications have been attempted due to perceived challenges and high cost (over $7M was expended in the case of Caulerpa).
Number of Invasive Species Statewide
The map below shows that all major harbor areas and Bays in California have received significant NIS introductions. San Francisco Bay has the highest number of non-native species, followed by the Ports of Los Angeles/Long Beach. San Francisco Bay is a hotspot for invasions because it has high recreational boating and commercial shipping traffic, a history of oyster culture, and is adjacent to a highly urbanized area. Our research found that San Francisco Bay is a hub for the spread of NIS to the rest of the West Coast.
Explanation:
PLEASE ITS ALREADY LATE PLEASE HELPPPP
Given these origins of the word transcription trans + script, why do you think scientists named the
process that way?
to scripe is to rewrite trans is to make . simply means there is a message written for the formation of something (the protein) that message is written or performed based on previous information
Approximately 20% of the world’s adult population are able to digest milk sugar (lactose).They are “lactose tolerant.” This trait is known to be controlled by a single dominant gene. Therefore, we would expect that
no lactose tolerant individuals have two biological parents that are lactose INtolerant.
all lactose tolerant individuals to be heterozygous for the gene.
60% of lactose INtolerant individuals would be heterozygous.
all children of lactose tolerant parents will also be lactose tolerant.
Answer:
No lactose individuals have two biological parents that are lactose intolerant
Explanation:
In this case lactose intolerance would be coded for a recessive gene (r). if both parents are lactose intolerant the would both be the genotype (rr) . For individual to be lactose intolerant atleast one parent most be lactose tolerant posesing the dominant (R) gene. Which both parents in this example lack.
Which of the following bacteria are responsible for causing the greatest number of foodborne illnesses?
A)Salmonella
B)Campylobacter
C)E. Coli
D)Listeriosis
Answer:
A. Salmonella
B. Campylobacter
Answer:
Salmonella, Campylobacter, and Toxoplasma caused the greatest number of foodborne illnesses.
-TheUnknownScientist
A moss begins to grow on a rock in an area that was previously uninhabited by life. This is an example of a __________ Choices: A. Pioneer species B. Climax community C. Disturbance D. Secondary succession ANSWER QUICK!!!
Answer:
The moss would be a pioneer species.
Explanation:
Which statement best describes how a major change in the size of one population affects an ecosystem?
a. It will immediately kill every population and the physical conditions.
b. It would not affect the physical conditions nor any populations.
c. It will affect the physical conditions, but not the other populations.
d. It affects every population, not the physical conditions.
this a simple question over worded to increase error
A. is obviusly no it
B. is saying nothing will happen which is incorrect
C. is saying like trees would shrink or weather would be bad
D. is correct because if there is more a certain creature it will over eat its prey
The most common index
fossils are shells of invertebrates.
Give two reasons why this is so.
Answer:
the most common index fossils are shells of invertebrates. give two reasons why this is so. Fusulinids make good index fossils. they are very abundant in marine sediment, widely distributed, and existed during a specific period in time.
Explanation:
learned in science class
Answer:
Fusulinids make good index fossils. They are very abundant in marine sediment,widely distributed and existed during a specific period in time.
During normal cell division, a parent cell having four chromosomes in G1 will produce two daughter cells, each containing ______.
PLEASE HELP ASFFF
What were the results of the experiment and how did the results prove the semiconservative model of DNA replication? Explain.
Answer:
it can be shows in DNA Test
7. Mendel did not know when he began his
experiment that the traits had only two forms and that
each trait was controlled by only one gene. Why is it
important that he chose pea plants for his
experiments?
Answer:
1. Many varieties were available in alternative forms of a character
2. Varieties were available in pure from start please true that is produced the same type of generation after generation
3. Peace and normally self pollinated but self pollination could be prevented by removing corresponding a productive path main parts demons and female bad kapil's after flour and could as well be crossed
pollinated artificially
What are sediments?
A Small sections of tectonic plates
B Small pieces of rock or soil material
C The new minerals created after chemical weathering
D The new land created by deposition
Answer:
B
Explanation:
They come from other Rocks or living things such as bones,leaves,stems, etc.
how does energy cause global warming
Answer:
Global warming is caused primarily from putting too much carbon into the atmosphere when coal gas and oil are burned to generate electricity or to run our cars. These gases spread around the planet very fast, keeping the solar heat that would otherwise be radiated out into space!
Hope this helped