Answer:
long wavelength
Explanation:
Identify how the physical barriers of the immune
system protect the body against pathogens.
Check all that apply.
•your nose produces oil to keep pathogens
from entering the body through your nose
•skin contains tightly packed cells
•skin is tough, flexible, and waterproof
•your cough when a pathogen enters your
mouth
•you sneeze when a pathogen enters your
nose
Physical barriers of the immune system protect the body against pathogens by preventing their entry or flushing them out. The skin, mucous membranes, and reflexes like coughing and sneezing are important physical barriers.
Explanation:The physical barriers of the immune system protect the body against pathogens by preventing their entry or trapping and flushing them out of the body. The skin, which is tough, flexible, and waterproof, acts as a mechanical barrier. It contains tightly packed cells that are difficult for pathogens to penetrate. The mucous membranes in body openings like the nose and ears have hairs and cilia that trap pathogens and move them out of the body. In addition, the nose produces oil that helps prevent pathogen entry, and coughing and sneezing are reflexes that expel pathogens when they enter the mouth or nose, respectively.
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contrast the chromosome number in gametes and zygotes in sexual reproduction into your answer in the space provided
Answer:
Chromosome number in gametes- haploid (n)
Chromosome number in zygote- diploid (2n)
Explanation:
Sexually-reproducing organisms make use of gametes to reproduce. The gametes are produced via the process of meiosis, which is a cell division that results in daughter cells (gametes) that have their chromosomal number reduced by half. A diploid (2n) organism i.e. possess two set of chromosomes undergoes meiosis to produce haploid (n) gametes i.e. contains one set of chromosomes. The male parent produces haploid sperm while the female parent produces haploid egg.
During reproduction, these haploid gametes (sperm and egg) combine in a process called FERTILIZATION to produce a diploid ZYGOTE. The diploid zygote then divides and grows into the full organism. Hence, since a zygote is formed by the fusion of two haploid gametes (sperm and egg), it contains a diploid chromosome number i.e. sperm (n) + egg (n) = zygote (2n)
Many children were paralyzed by polio in the 1950s. Today, polio has been reduced by 99 percent. Which statement best explains how this disease has been almost eradicated?
A) Independent behavior helps humans live self-sufficiently and solve their own problems.
B) human communities use their ecosystems in creative ways.
C) human communities are learning to live with less money and fewer possessions.
D) Group behavior helps humans cooperate in order to accomplish large, complex tasks.
Answer:
D
Explanation:
Answer:
B
Explanation:
The people are using their own ideas to help.
A mutation that inserts or deletes one or two nucleotides is usually more harmful than a mutation that substitutes one base for another because -
A It changes one amino acid in the sequence of a protein
B it shifts the reading frame for the rest of the code causing many errors
C The codon consists of three nucleotides coding for an amino acid
D the chromosomes fail to separate resulting in trisomy 21
If one or two nucleotides are added or deleted, they will cause a shift in the reading frame. This resulted in many errors.
Frame Shift Mutation:
There is code for every amino acid consecutively present in mRNA. These codes are read by the ribosome to form proteins. If one or two nucleotides are deleted or inserted, It completely changes the patern of codes. Hence it will read differently and form a non-functioning protein.Hence, we can conclude that If one or two nucleotides are added or deleted they will cause a shift in change the reading frame result in many errors.
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typhus is:
A) treated with antibiotics
B) can be prevented with a vaccine
C) is most common during the spring and summer
D) all of the above
Answer:
A) treated with antibiotics
Explanation:
typhus is a bacterial disease, there is currently no available vaccine so that eliminates all but A.
which example is a way that intercellular communication occurs?
A. A signal is sent down an exon within a nerve cell.
B. A molecule is sent through the plasmodesmata of a plant cell.
C. A signal is translated into action for a muscle cell to contract.
D. A molecule is transmitted from one part of a cell to another to cause a response.
Answer:
I believe the answer is A
Explanation:
Intercellular Communication is the transfer of information from one cell to another. Cells signal each other by direct contact with each other or by the release of a substance from one cell that is taken up by another cell.
Hope this helps! Brainliest please!
Saffron
Answer:
A molecule is sent through the plasmodesmata of a plant cell.
Explanation:
hope this helps :)
Which hemisphere controls non-verbal processing including spatial, musical, and visual tasks?
Answer:
The left hemisphere controls verbal processing, including reading, writing, and speech. The right hemisphere controls nonverbal processing, including spatial, musical, and visual tasks. The frontal lobe is responsible for speaking, muscle movements, and making plans and judgments.
Explanation:
How many grams of carbohydrates would you take in if you split this shake with a friend if the carbohydrates is 193g?
Answer:
If you split it perfectly even it should be 96.5g
Explanation:
193 divided by 2 equals 96.5
To find out the grams of carbohydrates each person would take in if the shake is shared with a friend, divide the total grams by the number of people. In this case, each person would take in approximately 96.5 grams of carbohydrates.
Explanation:To find out how many grams of carbohydrates each person would take if the shake is split with a friend, you need to divide the total grams of carbohydrates (193g) by the number of people sharing the shake. In this case, you are sharing it with one friend, so you would divide by 2.
193g / 2 = 96.5g
So, each person would take in approximately 96.5 grams of carbohydrates when splitting the shake.
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Some bacteria live in the roots of plants like soybeans and peas. What is the role of these bacteria in the nitrogen cycle.
Answer:
D
Explanation:
The diagram below shows a simple food chain. (With pictures)
Answer:
The Owl (c)
Explanation:
Owls usually eat mice so it would be a competition for the coyote.
Answer:
The owl
Explanation:
A human baby is born with two X Chrosomes what must be true about this baby
Answer:
It's a female
Explanation:
In an ecosystem, organisms compete for different resources. Intraspecific competition occurs when there’s competition for resources between members of the same species. What do you think the word interspecific refers to? Give an example with your explanation.
Answer:
Interspecific competition refers to competition between members of different species. For example, several species of flowering plants compete to attract pollinating insects, such as bees, for successful reproduction.
Explanation:
answer from Plato
The ecosystem is defined as the geographic region, in which plants, animals, and other organisms work together to live and survive.
In an ecosystem, intraspecific and interspecific competition is seen for food, shelter, and habitat.
Intraspecific competition is defined as the competition between organisms belonging to the same species. The organism fight for shelter and food.
Interspecific competition is defined as the rivalry or competition in organisms of different species living in the same ecosystem.
For example, the competition between woodpeckers and squirrels is a type of interspecific competition. Both the organisms fight for shelter and create holes in the trees.
Thus, intraspecific refer to the rivalry among organisms of the same species, whereas the competition between the organisms of different species in an ecosystem is interspecific.
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Why are cnidaria so significant to the animal kingdom?
Answer:
1. They provide home and shelter for millions of species of marine organisms.
2. They play a role as nutrient recyclers and in carbon and nitrogen fixation.
3. They are vital in the marine food chain as they are the main source of essential nutrients.
Explanation:
Cnidarians are extremely ecologically important organisms that play a significant role in the animal kingdom and nature.
For instance, coral reefs, which are built by hundreds to thousands of cnidarians, provide home and shelter for millions of species of marine organisms, from small crustaceans to large fish such as sharks. Furthermore, they play a role as nutrient recyclers and in carbon and nitrogen fixation. In addition, they are vital in the marine food chain as they are the main source of essential nutrients such as nitrogen.
Today, these organisms are threatened due to human activities and anthropogenic climate change, so it is fundamental to develop better strategies to protect and restore them.
Why aren’t the cecropia trees growing and thriving?
Answer:
Cecropia trees in the rain forest ecosystem make their
own food. Like all plants, they use energy from the sun
to turn carbon dioxide and water into food molecules.
They change these food molecules into molecules that
build their bodies or release energy. The cecropia trees
must not be getting the sunlight, water molecules, or
air molecules that they need to grow and thrive.
BRING WATER TO AFRICA
What is the inheritance pattern in which
| both alleles are expressed?
Answer:Codominance, as in human blood type, is a form of inheritance in which both alleles are expressed equally in the phenotype of the heterozygote.
Explanation:
The inheritance pattern where both alleles are expressed is known as codominance, distinct from Mendelian inheritance, with human blood type AB being a classic example.
The inheritance pattern in which both alleles are expressed is called codominance. In this genetic scenario, unlike the Mendelian dominance-recessive relationships, both alleles contribute to the offspring's phenotype. An example of codominance is seen in human blood types, where both A and B alleles are expressed, resulting in AB blood type.
Another form of non-Mendelian inheritance is incomplete dominance, where the phenotype is intermediate between the two parents, like wavy hair resulting from one curly hair allele and one straight hair allele. However, these should not be confused with dominant lethal inheritance patterns, which result in an allele being lethal both in the homozygote and the heterozygote. Dominant lethal alleles can only be transmitted if the lethality phenotype occurs after reproductive age.
The Punnett square shows the possible genotypes of the offspring of two pea plants that are heterozygous for seed color.
What is the genotype for each square?
A:
B:
C:
D:
Answer:
a-YY
b-Yy
c-Yy
d-yy
Explanation:
The planetary model _____. shows electrons in a cloud is difficult to draw on paper compares electrons to planets is the most recent atomic model
Answer:
compares electrons to planets
Explanation:
I took quiz and its right.
Some types of algae live inside coral. The algae provide the coral with nutrients. The coral provides the algae with shelter. Which of the following relationships exist between the algae and coral?
A.
a parasite-host relationship
B.
a symbiotic relationship
C.
a predator-prey relationship
D.
a competitive relationship
Which of the following is not part of the circulatory system?
A: arteries
B: stomach
C: heart
D: veins
Answer:
Stomach
Explanation:
Well, why would the stomach be a part of the circulatory system? The circulatory system is responsible for moving blood and nutrients through the body. Blood is pumped from the heart, into arteries, and back into the heart through veins.
Final answer:
The stomach is not part of the circulatory system, which includes arteries, the heart, and veins.
Explanation:
Of the choices provided, B: stomach is not part of the circulatory system. The circulatory system consists of organs and systems responsible for the flow of blood, nutrients, hormones, oxygen, and other gases to and from cells. Specifically:
Arteries are blood vessels that carry blood away from the heart.
The heart is the pump that circulates blood throughout the body.
Veins are blood vessels that carry blood to the heart.
The stomach is involved in the digestive system, where it breaks down food, rather than the circulatory system.
John's class has been studying blood type and donations John is not sure what blood type he has A dinner John asked him mom
if she knew his blood type John's Mom has type A blood and his Dad has type B blood John's Mom tells him he must have the
type A or type bike his parents to lohn's Mom correct?
A)
No Blood
is not inherited
Yes Tracts are always inhented from parents
No lon could have type A B AB. O depending on the alleles he
when from his parents
Yes To Mom will give him an allele for type A and his Dad will give him
Its No. John could have type A, B, AB, or O, depending on the alleles he inherits from his parents. which is letter C.
No, she is not correct johns blood group depends on which allele he gets inherited from his parents so the blood group could be A, B, AB, or O.
What is a blood group?A person will still have type A blood even if they inherit both the A and O alleles. Blood type is genetically determined by the genotypes, or allele compositions, of the parents.
Three different allele types—A, B, and O—make up the ABO gene. The first two, A and B, are codominant, which means they each have an equal amount of dominance, allele O, however, is recessive.
The numerous blood types are created by various combinations of these three alleles, which can be the A, B, AB, and O blood group of John.
Therefore, John has types A, B, AB, and O depending on the alleles depending on the allele inherited from his parents.
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is the crus at a mid ocean ridge young or old?
Answer:
young
Explanation:
Most crust in the ocean basins is less than 200 million years old, which is much younger than the 4.54 billion year age of the Earth. This fact reflects the process of lithosphere recycling into the Earth's mantle during subduction.
Answer: Young
Explanation: Most crust in the ocean basins is less than 200 million years old, which is much younger than the 4.54 billion year age of the Earth.
Based on Bill Nye's video on Biodiversity, Help plz!!!
1. All environments on Earth are crowded with ___________________________
2. Healthy ecosystems contain both ______________ and _____-________________ parts.
3. Describe what Bill Nye was trying to demonstrate by removing some of the blocks in his tower of blocks.
4. What does the expression “You pick a flower without jiggling a star” say about ecosystems?
5. In “Consider the Following,” Bill Nye makes a special request to not spread out our development projects. WHY?
6. Name at least two (2) species that have gone extinct.
7. The “best way to wipe out a species” is to change its ______________________
8. The largest ecosystem in the world iis ___________________, where (how many) ____________ of all species live.
9. Name five (5) things you can do to guarantee biodiversity.
10. Of the 30,000,000 speices on Earth, how many are lost each HOUR? _________
11. In conclusion, Bill Nye states that “As more and more species disappear, it’s harder and harder to keep and ecosystem in balance because we don’t know WHAT?
12. To keep our ecosystem healthy, we must keep our ____________________
Page 21: This is a summative grade.
1. How many species go extinct every day?
2. Does species diversity follow any patterns?
3. What is a biodiversity hotspot?
4. Why are so many species disappearing?
5. How is biodiversity measured?
6. What is biodiversity?
7. What are the world’s rarest species?
8. How many species go extinct every day?
Answer:
Explanation:
life living,non-livingMany species are going extinct, and their loss affects the balance of other living thingseverything effects everything elsetry limiting our impact on the environmentdodo bird , passenger pigeon natural habitatthe ocean , 2/3buying Eco friendly appliances , recycle as much as we can , reuse products , reduce buying products that pollute17we don't know that species are needed for our survivalbiodiversity1. 150 2. The diversity of species is lowest at the poles and increases toward the equator, with the deserts being obvious exceptions.3. biographic region of significant biodiversity 4. because of the changes caused to earth5.through species richness and the number of species in a given area6.the variety of plant and animal life in the world or in a particular habitat7. Giant otter, black-footed ferret8.150define resolving power of a microscope
Which items are kingdoms? Check all that apply.
Plantae
Archaebacteria
Animalia
Eukarya
Eubacteria
Protista
Fungi
Bacteria
Answer:
Plantae
Archaebacteria
Animalia
Eubacteria
Protista
Fungi
Explanation:
Final answer:
In the list provided, the items that are kingdoms include Plantae, Archaebacteria, Animalia, Eubacteria, Protista, and Fungi. Bacteria is often synonymous with the Kingdom Monera, specifically Eubacteria, while Eukarya is a domain, not a kingdom.
Explanation:
The kingdom level is a high taxonomic rank in the biological classification system. The kingdoms that are part of modern taxonomy include: Kingdom Animalia, Kingdom Plantae, Kingdom Fungi, Kingdom Protista, and Kingdom Monera (often divided into Archaebacteria and Eubacteria). Therefore, in the list provided, Plantae, Archaebacteria, Animalia, Eubacteria, Protista, and Fungi are all kingdoms. Although not traditionally considered a kingdom of its own, Bacteria is often used synonymously with the Kingdom Monera, specifically referring to the Eubacteria. The term Eukarya does not represent a kingdom; instead, it is a domain that encompasses the four eukaryotic kingdoms: Animalia, Plantae, Fungi, and Protista.
What’s the answer???
Answer:
Storing energy and Eukaryotic Cells
Explanation:
Chloroplasts are pigments, and pigments turn that light into energy. The green that you see on plats are because of the chloroplasts, either reflecting green or absorbing green. Chloroplasts are only found in Eukaryotic cells, that means it isn't found in just plant cells.
Which statement describes the relationship between
diagram X and Y?
O Gravity attracts only larger objects toward one another.
O Gravity attracts larger objects only if they are close to
one another.
If the masses of the objects increase, then the force
between them also increases.
Answer:
the correct answer is
The diagrams show objects' gravitational pull toward each other. Which statement describes the relationship between diagram X and Y? If the masses of the objects increase, then the force between them also increases.
Explanation:
hope this helps u!!
Answer:
C- If the masses of the objects increase, then the force between them also increases.
Explanation:
i just did the test and got it right!!
Ventricles pump blood out of the heart. Which types of vessels will be the first to contact the blood from the ventricles?
arteries
atria
capillaries
veins
Ventricles pump blood out of the heart, and the types of vessels that will be the first to contact the blood from the ventricles are arteries. This is the first option, as after the ventricles contract, blood is pumped out of the heart through the pulmonary artery.
What is the heart and ventricles ?The heart has four chambers: two atria (upper chambers) and two ventricles (lower chambers). Blood flows into the atria from the veins and then flows into the ventricles. The right ventricle pumps blood to the lungs through the pulmonary artery, while the left ventricle pumps oxygen-rich blood to the rest of the body through the aorta.
Arteries are blood vessels that carry blood away from the heart. They are thick-walled and muscular, with elastic fibers that allow them to withstand the high pressure generated by the pumping action of the heart. Arteries branch out into smaller arteries and arterioles, which eventually lead to capillaries.
Hence, the ventricles pump blood out of the heart, and the types of vessels that will be the first to contact the blood from the ventricles are arteries. This is the first option.
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Which BEST describes why the hatchet fish has been able to survive?
It has eaten and eliminated smaller fish.
It has multiplied faster than other marine life.
It has occupied the largest area.
It has adapted to feed on available food.
Answer:
It has adapted to feed on available food.
Explanation:
Answer:
IT HAS ADAPTED TO FEED ON AVAILABLE FOOD
Explanation:
7. In a chemical reaction, which event ALWAYS occurs as the reaction proceeds?
a. the rearrangement of electrons to break or form chemical bonds
b. the release of energy to the environment
c. the absorption of energy from the environment
d. a change in total mass
Answer: B
Explanation:
Chemical reaction represents the chemical changes in a reactant that results in a product. As the reaction proceeds, the electron rearranges themselves to form or break bonds. Thus, option a is correct.
What is a chemical reaction?A chemical reaction is a conversion process where the reactant undergoes chemical changes to get converted into one or more products that are different and new.
The product or the new substance is formed as a result of the electron rearrangement that leads to the splitting or formation of the bonds among the reactants.
Some chemical reactions absorb heat from surroundings, while some releases heat into the environment. But in a reaction, the mass remains conserved.
Therefore, option a. the electron rearranges to split and create new bonds is correct for a chemical reaction.
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An uncovered pot of water lies out in the sun. Which statements correctly describe what happens at the surface of the liquid water?
When an uncovered pot of water lies in the sun, the water undergoes evaporation and potentially reaches a point of equilibrium with condensation when the air is saturated. Water's high surface tension and ice's lower density than liquid water play pivotal roles in Earth's ecosystems.
An uncovered pot of water lying in the sun undergoes several changes on the surface due to energy from the sun. Initially, as the water absorbs heat, it will begin to evaporate, turning from liquid into water vapor. This process decreases the water level in the pot. Over time, the rate of evaporation will be balanced by the rate of condensation, which is when water vapor turns back into liquid water. This balance is achieved when the air above the water becomes saturated with water vapor.
Furthermore, liquid water possesses a high surface tension, which helps it to form droplets and adhere to surfaces. This property, in combination with capillary action, is essential for the upward transport of water in plants and soil. As for solid water, or ice, its lower density compared to liquid water means that it floats, an important factor in the survival of aquatic organisms in cold climates.
The water cycle is demonstrated as a continuous open system in which water gains and losses occur. Water is gained from the outgassing of the earth's crust, while losses happen when hydrogen from water molecules in the gaseous state escapes the earth's gravity and is lost to space due to the energy from sunlight.