Answer:
the three types of cellular transport used in gas exchange are :-
Cellular transport
Diffusion.Osmosis.Active transportThe three types of cellular transport used in gas exchange are simple diffusion, facilitated diffusion, and active transport.
Explanation:The three types of cellular transport used in gas exchange are simple diffusion, facilitated diffusion, and active transport. During gas exchange in the lungs, oxygen and carbon dioxide move between air spaces in the lungs and the blood by passive processes that require no energy from the cell. Simple diffusion involves the movement of these gas molecules down their concentration gradients across cell membranes. In some cases, transport proteins assist in the movement of molecules, which is known as facilitated diffusion. When molecules move against their concentration gradient, the cell must use energy in a process called active transport.
What is a B cell
A.)A pathogen that makes antigens
B.)A lymphocyte that makes antibodies
C.)An antigen that makes antibodies
D.)A virus that makes bacteria
Answer:
B.)A lymphocyte that makes antibodies
Explanation:
B cells creates antibodies, which help fight foreign viruses and bacteria to help prevent an individual from getting sick.
how have antibiotics changed the quality of life of for humans over the past Century
Answer:
Antibiotics have helped in a speedy recovery for human illnesses over the past century.
Explanation:
Because anti biotics were not present centuries ago, many would get sick and even die. However, antibiotics work by affecting things that bacterial cells have but human cells don't. This helps to fight off the bacterial cells and fight infections and viruses, leading to a speedy recovery.
As an object travels around the sun or other large object, it travels on a fixed path that is
called its
A. period
B. orbit
C. perigee
D. revolution
Answer:
B. orbit
Explanation:
As an object travels around the sun or other large object, it travels on a fixed path that is called its orbit.
A population is growing at a rate of 2,4, 8, 16, 32. Which type of growth does this describe?
Answer:
C: Exponential growth
Explanation:
In Biology, economics and Mathematics, exponential growth means when the increase in population is happening at constant rate and it is positive.
So as we can see in the example that growth rate is almost doubling in each cycle, or it can be expressed as 2^1, 2^2, 2^3, 2^4, 2^5.
We also use a formula for deriving and expressing population's exponential growth: Nt = N0 exp (r.t)
Here Nt indicates the number of organisms of a subject population in a certain time t, where r indicates the intrinsic growth rate and t being the time. The expression () is the Euler constant with value 2.718.
Hope it helps!
Answer:
Exponential rate
Explanation:
The given sample population is:
2, 4, 8, 16, 32
We have just two types of growth rate, linear and exponential growth rate. Linear growth rate inceases by a common or a constant difference. For example, given a set of values:
1,2,3,4,5 : we see that each value increases by 1
For exponential growth rate the values increase by a constant ratio. For example:
1, 4, 16, 64: we see a constant ratio of 4
From the given set of values, a constant ration best fits the increment. The ratio factor is by 2. This is an exponential growth rate.
The image below shows a chromosome with three genes labeled
gene 1
gene 2
gene 3
How are these three genes related?
A
All three genes are linked, and genes 2 and 3 are strongly linked
B.
All three genes are linked, and genes 2 and 3 are weakly linked
c.
Genes 1 and 3 are unlinked, and genes 2 and 3 are strongly linked
d. Genes 1 and 2 are unlinked, and genes 2 and 3 are weakly linked. I NEED THIS ASAP PLZZZZ???
Answer:
A
Explanation:
Linked gene are genes with a high probability of being inherited together. Linked genes are mostly found on the same chromosome and chromosome arm. The closer the genes are along the arm of the chromosome, the even higher degree of linkage – because even in cases of crossing over in meiosis I, they are more likely to remain together.
Answer:
A. All three Genes are linked, and genes 2 and 3 are strongly linked
Explanation:
Which of the following is a compound? A.)Ne B.) N2 C.) NaCl D.) O2
Answer:
c. NaCl is a compound
Explanation:
Earth is home to more than 20 million kinds of organisms, and all have DNA made up of only four types of nucleotides. The bodies of each kind of organism grow and function according to instructions in their DNA. Such variety is possible because each organism's DNA molecules:
A.
can quickly change into different shapes.
B.
contain two strands of nucleotide bases.
C.
contain a unique sequence of nucleotide bases.
D.
combine easily with other molecules.
help MEEEEEEE please
Answer:i think it could be C im not sure
Explanation:
Final answer:
The Earth's biodiversity is attributed to the unique sequence of nucleotide bases in each organism's DNA, allowing for a vast combination of genetic codes despite the use of only four types of nucleotides.
Explanation:
The variety of life on Earth is possible because each organism's DNA molecules contain a unique sequence of nucleotide bases. This means the correct answer to the student's question is:
C. contain a unique sequence of nucleotide bases.
Despite the fact that all organisms use DNA as their genetic material with the same four types of nucleotides (adenine, thymine, cytosine, and guanine), the sequence of these bases can vary immensely. This variation allows for the incredible diversity of life we see on Earth. Just as combinations of zeros and ones can create vast amounts of different programs and data in computer systems, the combinations of A, T, C, and G in various sequences form the genetic code that directs the growth and function of every living organism.
The wings of the housefly and the bat are_________?
A. analogous structures
B. vestigial structures
D. homologous structures
Answer:
analogous structures
Explanation:
i honestly can't explain
when dna separates into two strands the dna would most likely be directly involved in
Answer:
Replication
Explanation:
DNA unwinds into 2 seperate strands during replication
DNA replication is the process in which DNA makes it copy and incorporate into the daughter cell. Cell division is the process in which the DNA is replicated and transmitted in the daughter cells.
DNA replication is the starts with the formation of a replication fork, in which the helical structure of the DNA is unwinded into two template strands.
The information coded into the template strand is copied into the complementary strand. The process of making a complementary strand from the template strand involves transcription, followed by a translation.
Thus, during cell division, the DNA is replicated and separated into two strands.
To know more about DNA replication, refer to the following link:
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Which two animals are able to generate internal heat to maintain their body temperature in a cold environment?
Which cell structures are seen in all cell types? Check all that apply.
DNA
cytoplasm
nucleus
ribosomes
cell membrane
Answer:
DNA
cytoplasm
ribosomes
cell membrane
Explanation:
Nucleus is not seen in all cell types.
Genes are segments of dna that determine the phenotype of an individual
ANSWER:
The statement is True. Genes are "segments of DNA" and help in determining the phenotype of an individual.
EXPLANATION:
Phenotype or the physical features and behaviour of organisms are determined by their genes. Genes as segments of DNA contain "codes" for the production of "proteins" that determine the various characteristics of an individual. Genes are located on chromosomes and can exist in different forms. Gene is considered to be the "basic unit of heredity" and determines the characteristics that pass from parents to the offspring.what do proteins, nucleic, acids, and carbohydrates all have in common
Answer:
oxygen is common in them
Explanation:
ozygen is common in all of rhem
Answer:
Proteins, nucleic acids, and carbohydrates are macromolecules present in living organisms.
These molecules are composed of carbon atoms bonded together. These carbon atoms also bind to other elements such as hydrogen, oxygen, nitrogen and phosphorus. Each type of molecule has its own composition of different proportions.
Many different populations of marine life live at a coral reef. This is an example of which of the following? Ecosystem diversity Genetic diversity Natural selection Species diversity
Answer:
Specie diversity
Explanation:
Let's understand each option to get to know that why specie diversity is the right option.
1- Ecosystem diversity shows that how different types of habitats there can be where the organisms can live, for example desert ecosystem, tundra ecosystem etc.
2-Genetic diversity means the diversity or variety present in the genetic makeup of organisms which leads to variation among same traits in organisms, for example, many types of eye color, many kinds of facial feature, height ranges etc.
3- Natural selection is based on a theory that there lies a competition of food and resources between organisms for survival. One who has better ability to grab resources survives better and is called fittest.
4- Specie diversity simply indicates that how many diverse kinds of specie or populations can stay at same habitat or ecosystem which perfectly suits our given situation in question.
Hope it helps!
Answer:
species diversity
Explanation:
Why are there hundreds of different protein channels?
A. they work for different molecules
B. The cells make multiple protein channels just in case one dies
C. In case molecules have to go from a low to high concentration
D. Smaller molecules will go through protein channels to save space
Answer:
I think that the answer is A
I'm not 100% sure though sorry. Hope this helps.
They work for different molecules.
Why are there different protein channels?
This carrier protein type allows cells to transport materials using the ion gradient they build with other ATP carrier proteins. The major difference between a channel protein and a carrier protein is stereospecificity. While channel proteins only allow certain-sized molecules to pass, they do not bind the molecules.
Are there hundreds of different protein channels?There are many different types of channel proteins in your body, and each one will only let specific types of molecules pass through.
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In which location would the rate of soil erosion most likely be higher than the rate of soil formation?
A. A tropical area with moderate rainfall
B. A temperate forest
C. A steep slope
D. A river delta
Answer:
C. A steep slope
Explanation:
Erosion is the removal of the top layer of the earth or the gathering of lose weathered materials from rock surfaces.
Agents of erosion are wind, water, glacier and gravity.
Along a very steep slope, erosion is highly rife and very prevalent to the extent that everything there is washed away to be deposited at the bottom of the slope or where gradient is more gentle.
On a steep slope, materials moves rapidly and gravity is very great. When these factors are coupled with the prevailing conditions in a place, little to no deposition occurs for soil formation.
The rate of soil erosion would most likely be higher than the rate of soil formation on a steep slope due to the increased movement of soil and reduced water infiltration, leading to limited soil development.
Explanation:The rate of soil erosion is likely to be higher relative to the rate of soil formation in locations with certain topographical features. An example where this would occur is on a steep slope. Steep slopes tend to have more soil erosion, less water infiltration, and limited soil development due to the force of gravity acting on loosely held soil particles, leading to more rapid and frequent soil movement. The correct answer to the student's question is C. A steep slope. In contrast, a tropical area with moderate rainfall, a temperate forest, and a river delta would typically have higher rates of soil formation and better conditions for soil stability.
How does translation form proteins?
DNIA
The ribosome reads an mRNA in codon (3 consecutive nucleotides) sequences. It begins with a start codon that codes for methionine. As the ribosome reads the codons, the respective tRNA (with the respective anticodon) is recruited bringing in an amino acid coded for by the codon. The amino acid brought in then forms a peptide bond (mediated by peptidyl transferase enzyme) with the preceding amino acid. This continues until the whole mRNA is read or until a stop codon is encountered. A polypeptide will eventually have been formed.
sexual reproduction helps a species to be successful because
Answer:
The fact that most eukaryotes reproduce sexually is evidence of its evolutionary success. In many animals, it is actually the only mode of reproduction. The genetic diversity of sexually-produced offspring is thought to give species a better chance of surviving in an unpredictable or changing environment.
Sexual reproduction is crucial for the success of a species because it results in genetically diverse offspring.
Sexual reproduction creates genetically diverse offspring, providing species with a greater ability to adapt to environmental changes and increasing their chance of survival. This diversity provides a better chance for survival in a changing or unpredictable environment, giving rise to a wide range of phenotypes through the combination of genetic material from two individuals. Despite the limitations of requiring both sexes for reproduction, which can impact colonization of new habitats, the benefits of this genetic variation are imperative. It allows for a population to have individuals who might be better adapted to new challenges and also offers a mechanism for selective adaptation.
The mechanisms of meiosis and fertilization enhance genetic variation, a concept often referred to as the Red Queen Hypothesis. This genetic variance acts as a buffer against extinction, as it increases the likelihood that some individuals in a population will possess advantageous traits to adapt to new environmental pressures. Sexual reproduction also allows for the introduction of genetic bottlenecks that can eliminate deleterious alleles from a population and quickens the appearance of beneficial allele combinations.
two atoms have the same number of protons but different number if neutrons these atoms are:
A. electrons
b. molecules
c. radiation
d. isotopes
(apex)
Answer:
isotopes
Explanation:
Answer:
Isotopes
Explanation:
18. Based on this image, what can be inferred about the organization of life?
A. There are only two organisms within one population. B. Bigger systems build on smaller systems. C. There are no connections among organisms. D. Smaller systems build on larger systems.
Answer:
Answer choice B
Explanation:
As you move clockwise in the systems, each picture shows that the bigger systems come from and build off of the smaller systems
Answer:
The answer is B. Bigger systems build on a smaller system.
Explanation:
This image represents or wants to show how the biosphere is full of life, and how life is formed from the smallest particle. From the largest ecosystem to a small atom, all these are related and are equally important for all together to form the life of planet earth. In every living being there is a world of life that goes from a small atom forming a molecule, to creating a great living ecosystem.
A gardener places extra nutrients in the soil of a flower bed to make the
flower grow faster. Through which tissue would the nutrients first move into
the flower?
A. Chloroplasts
B. Phloem
C. Xylem
D. Amoeba
ANSWER:
Through xylem, the nutrients first move into the flower.
EXPLANATION:
The roots of the plant are responsible for absorbing water and nutrients from the soil. These are then provided to the vascular tissue xylem of the plants.
The xylem then transports all the nutrients to the different parts of the plant. The xylem being one of the two vascular tissues has a role of transporting 'water and nutrients' from soil to different parts of a plant.
Answer:C
Explanation:
Put the stages of fossil fuel formation in their correct order pleaseeee.
* Natural gas is forced into crevices or
sedimentary rock pores.
•Oxygen is used up or expelled.
•Amount of heat dictates physical state of
fuel
•Material is buried in sediment and silt.
•Heat and pressure are applied.
•Organic material decomposes
Answer:
Explanation:
•Material is buried in sediment and silt.
•Organic material decomposes
.Oxygen is used up or expelled.
•Heat and pressure are applied.
•Amount of heat dictates physical state of fuel
* Natural gas is forced into crevices or sedimentary rock pores.
For fossil fuels to form, the correct natural processes must play out in a geologic formation. Fossil fuels are sourced from materials that becomes buried in sediments usually in a sedimentary basin. In the basin, the organic material decomposes in the presence of oxygen. With increasing compaction and burial, the oxic environmental cuts off and the decomposition ceases. As burial continues, heat and pressure is applied to the formation and natural gas is produced. The amount of heat dictates the physical state of the fuel that would be produced be it solid, liquid or gas. The fuel is then forced into reservoir rocks through traps.
Answer:
The correct answer is
-Organic material decomposes.
-Material is buried in sediment and silt.
-Oxygen is used up or expelled.
-Heat and pressure are applied.
-Amount of heat dictates physical state or fuel.
-Natural gas is forced into crevices or sedimentary rock pores.
Explanation:
For PLATO students
Put the following levels of organization in order from smallest to largest: ecosystem, biome, population, biosphere, biological community, and organism.
Organism
Population
biological community
ecosystem
biome
biosphere
PS:increasing order
Population is a group of organisms of d same species
A biological community is the population of organisms living together and interacting in a given area
Ecosystem is the interaction between living and non living organism in a community
Biomes are biological communities that are formed in response to a shared physical environment
Biosphere is the part of the earth that contains living organism
The levels of organization in order from smallest to largest is - Organism, population, biological community, ecosystem, biome, biosphere
There are different levels of organization in every system including the biological system or ecological systems. In this case, there are various levels of the ecological system where:
Organism - an individual in a population that is a unit level and smallest in a particular organization.Population - a group of individuals within the particular species found in a specific area, and able to reproduce.Community - group of two or more species in a population found in a geographical area.Ecosystem - a community where the interaction between biotic and abiotic (non-living) components.Biome - an ecological area with the same climate and biodiversity that may have multiple ecosystems within it.Biosphere - all living organisms along with the spheres, interact with different geosphere.Thus, The levels of organization in order from smallest to largest is - Organism, population, biological community, ecosystem, biome, biosphere.
Learn more about the ecological organization:
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What would MOST LIKELY happen if the amount of phytoplankton in the ocean were reduced?
Answer:
The ocean food chain would shrink, as the phytoplankton are the base of the food chain
Explanation:
Atmospheric carbon dioxide levels would increase because phytoplankton are plants that use carbon dioxide in photosynthesis to grow.
Atmospheric oxygen levels would decrease since there would be more carbon dixodie (the carbon dioxide is converted to oxygen and carbohydrates by photosynthesis).
Oceanic pH levels would decrease, that is the ocean would become more acid. This would be due to higher levels of carbon dioxide, which makes carbonic acid when it dissolves.
What is a histone protein
What will a hypothesis become if it supported by repeated experimentation
Answer:
A hypothesis can become a scientific theory if it is supported by repeated experimentation.
Answer:
Sample Response: Corn starch, one of the covalent compounds, is solid at room temperature. The property of being solid is more common to ionic compounds. So, the hypothesis was mostly supported except for this one data point.
A student conducts an experiment to see how music affects plant growth. The student obtains four identical plants. Each one is potted in the same type of soil and receives the same amount of sunlight and water each day. Plant A listens to classical music for three hours each day. Plant B listens to rock music for three hours each day. Plant C listens to country music for three hours each day. Plant D does not listen to any music at all.
2. In the experiment described in the scenario, which group represents the control group?
A. Plant C
B. Plant B
C. Plant D
D. Plant A
Es la C la correcta
Answer: C. plant D
Explanation:
To study how music affects plant growth, the experiment exposes several identical plants to different types of music and there is a control plant that is not exposed to any music. Plant D does not listen to any music at all.
[tex]\textit{\textbf{Spymore}}[/tex]
organisms that rely on other living things for food are called
Answer:
organisms that rely on other living things for food are called heterotroph
Answer: heterotrophs
HELP!!! Coral bleaching events are occurring in coral reefs around the world. Which statement best describes how human activity will likely continue to cause a loss of reef biodiversity
Answer:
A.
Explanation:
As humans continue the terrible actions on the ocean, the more the fish and other forms of life are forced into a smaller space, and then killed in the only space they have.
Answer: Option B
Explanation:
Ocean acidification is being the greatest threat to coral reef now a days, this is because the human activity is increasing the rate of carbon dioxide production in the atmosphere.
The coral reefs are experiencing degradation due to ocean acidification which causes rise in temperature due to increased concentration of carbon dioxide in water.
Hence, option B is correct.
What is the ratio of surface area to volume for a sphere with the following measurements? Surface area = 588 m2 volume = 1372 m3
Answer:
Ratio = 0.43/m
Explanation:
Given parameters:
Surface area of sphere = 588m²
Volume of sphere = 1372m³
We are solving for the ratio of the surface area to volume. This ratio is very important in so many life processes in both plants and animals.
Ratio = [tex]\frac{Surface area of sphere}{Volume of sphere}[/tex]
Ratio = [tex]\frac{588m^{2} }{1372m^{3} }[/tex]
Ratio = 0.43/m