Answer:
The cells of the villi and another part of the small intestine, known as the crypts, transport food from the digestive tract into the bloodstream, where they can be used by the body. The villi aid in absorption by increasing the surface area of the intestine and contain specialized cells which transport different types of nutrients into the blood.
Explanation:
Explain why populations tend not to continue to increase exponentially in an environment: 2. Explain what is meant by environmental resistance: 3. (a) Explain what is meant by carrying capacity: (b) Explain the importance of carrying capacity to the growth and maintenance of population numbers: 4. Species that expand into a new area, such as rabbits did in areas of Australia, typically show a period of rapid population growth followed by a slowing of population growth as density dependent factors become more important and the population settles around a level that can be supported by the carrying capacity of the environment. (a) Explain why a newly introduced consumer (e.g. rabbit) would initially exhibit a period of exponential population growth: (b) Describe a likely outcome for a rabbit population after the initial rapid increase had slowed: 5. Describe the effect that introduced grazing species might have on the carrying capacity
Answer and Explanation
Explain why populations tend not to continue to increase exponentially in an environment: The exponential growth model is based on unlimited resource availability which means that there is no effect depending on density. There is no competition for resources. Natality and mortality rate do not depend on density. There is a constant growth rate per capita and it is proportional to the population size. A population that exhibits exponential growth model increases in proportion to its size. In the Logistic growth model, the population growth depends on density, the natality and mortality rate depends on the population size, which means that there is no independence between population growth and population density.
When a population grows in a limited space, density rises gradually and eventually affects the multiplication rate. The population's per capita growth rate decreases as population size increases. The population reaches a maximum point delimited by available resources, such as food or space. This point is known as the carrying capacity, K.
Explain what is meant by environmental resistance: It refers to the limiting factors. There are factors and conditions that regulate the population growth, that might be biotic or abiotic, and that avoid the over-growth of a population in a certain space. It results in a natural equilibrium of its biotic potential.
Explain what is meant by carrying capacity: The carrying capacity K is the maximum point delimited by available resources, such as food or space.
K is a constant that coincides with the size of the population at the equilibrium point when the natality rate and the mortality rate get qual to each other.
Explain the importance of carrying capacity to the growth and maintenance of population numbers: If the population size, N, is inferior to K (N<K) the population can still grow. When N approximates to K, the population´s growth speed decreases. When N=K, the population reaches equilibrium, and when N is superior to K (N>K) the population must decrease in size because there are not enough resources to maintain that size.
Explain why a newly introduced consumer (e.g. rabbit) would initially exhibit a period of exponential population growth: The example of the rabbit is a case of invasion. Biologic Invasions refer to new species that disperse and establish in a new area far or out of their original distribution range. Once established, these species expand their distribution from the first invaded spot and overgrows. Once stablished, they expand. In the new area, they have less environmental pressure and better conditions than in their origin area -fewer predators, more resources, better nitches-, and these factors favor their overgrowth and consequently uncontrolled expansion. At this point, the population is exhibiting exponential growth. They have enough food available, they might not have predators, they do not have enough competitors for food or space, and if they do they are adapted to live under harder conditions so they are able to compete. The new species is not suffering from the effects of limiting factors yet.
Describe a likely outcome for a rabbit population after the initial rapid increase had slowed: There are some typical steps in an invasion process:
1) Introduction or dispersion to the new area,
2) Naturalization. The new species establishes in the new area. It can grow, reproduce and make use of resources.
3) Overgrowth and uncontrolled expansion. Exponential growth
4) Interaction with other species. At this point, they compete for limiting factors such as food or space. Their population is big enough to be affected by resource availability and by other species that interact with them. The invasive species reach the point in the curve where they stabilize.
5) Stabilization. They reach an equilibrium point.
Describe the effect that introduced grazing species might have on the carrying capacity. The introduced species expand fast and consume too many resources. Available resources, such as food or space, decrease.
The populations tend not to continue to increase exponentially in an environment due to various environmental factors which restricts or limits its growth.
Environmental resistance refers to environmental factors that restrict the biotic potential of an organism or limit the increase in population. Carrying capacity refers to average population of specie's size in a particular habitat. The importance of carrying capacity to the growth and maintenance of population number because carrying capacity provides resources to a specific population of organisms.
Newly introduced consumer (e.g. rabbit) would initially exhibit a period of exponential population growth because of no predator present in the environment. The introduction of predators which feeds on rabbit is the outcome for a rabbit population after the initial rapid increase had slowed
There is a great effect of introduced grazing species might have on the carrying capacity because more introduced grazing species removes all the vegetation present in that environment which leads to imbalance of ecosystem.
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The diagram below represents levels of organization in living things. Which term would best represent X?
A. Stomach
B. Human
C. Tissue
D. Chloroplasts
The correct answer is C. Tissue
Explanation:
In the diagram, x is between organ and cell level. This implies this level of organization is smaller than an organ but no as small as one cell. In this context, the most suitable term to add to this level is a tissue because these are structures composed of specialized cells, which shows this level encloses cells. Also, a group of tissues forms an organ; this implies the organ is the level that follows the tissue. Examples of this include muscle tissue composed of muscle cells and that is part of organs including the heart.
The term that would best represent X would be tissue.
The simplest level of organization of living things is the cell followed by tissue, organ, organ system, and then the organism itself.
The cell represents the simplest unit of existenceCells come together form tissues in order to perform a functionDifferent tissues come together to function as a unit known as organsDifferent organs make up the system and the body of an organism is made up of different systems.More on levels of organization of living things can be found here: https://brainly.com/question/282455?referrer=searchResults
How could a plant maintain homeostasis at a cellular level
Answer:
Plant cells have rigid walls that contain organs that regulate plant health and growth. Among the plant cell organs are the vacuoles, the largest and main mechanisms for maintaining homeostasis, and chloroplasts, which produce energy
Explanation:
Is this Red blood cell in a Hypotonic, Isotonic, or
Hypertonic solution?
H2O
LH₂O
Answer:
[tex]\boxed {\tt B. \ Isotonic}[/tex]
Explanation:
We can see that the H₂O or water is leaving the cell and entering the cell at the same rate.
An isotonic solution has the same amount of solute outside the cell and solution inside cell. Therefore, when the water moves across the membrane, the water inside the red blood cell does not change.
Therefore, the best answer choice is B. Isotonic
which of the following structures have sweat glands?
a. olfactory bulb
b. retina
c. dermis
d. cochlea
please help me and btw im in 5th grade so pls help me with this. Thx =)
NEED HELP ASAP * I THINK IS MY ANSWER
Table salt is a compound created when sodium (atomic number 11) and chlorine (atomic number 17) atoms bond. Which of the following correctly describes this bond?
A)sodium and chlorine share two electrons
B)a sodium atom gives all of its electrons to chlorine.
*C)a sodium atom gives one electron to a chlorine atom *
D)a chlorine atom gives a proton to a sodium atom
Answer:
oh it D
Explanation: DDDDDDD
Answer:
D
Explanation:
Explain how cell membranes work work according to the fluid mosaic model
WORTH 20 POINTS
The fluid mosaic model explains various observations regarding the structure of functional cell membranes. According to this biological model, there is a lipid bilayer (two molecules thick layer consisting primarily of amphipathic phospholipids) in which protein molecules are embedded.
Which of the following is true of the Celsius scale
Answer:
ALL OF THE ABOVE!!
Explanation:
Jenny brings home a plant with an internal concentration of 25g/ml. She puts the plant in her aquarium and fills the aquarium with water from the tap.
The plant will swell and possibly burst if the cell walls are weak.
B
The plant will wilt and possibly break apart if the cell membranes are weak.
C
The plant will thrive in a new type of environment.
D
The plant will become a creeping vine and grow out of the aquarium.
The plant will swell and possibly burst if the cell walls are weak. So, the correct option is A.
What is Cell wall?A cell wall is an external structural layer that surrounds some types of cells. It may be hard, flexible, or occasionally rigid. It serves as a filtration system as well as structural protection and support for the cell. The cell wall composition varies according to the organism which is permeable in nature
The cell wall isolates the inner elements from the surrounding environment. The cell as well as its organelles are also development in the context, support, and protection by it. But only eukaryotic plants, fungi, and a few prokaryotic creatures have this cellular component. If the plant's cell walls are insufficient in the case above, it will enlarge and possibly burst.
Therefore, the correct option is A.
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If a cell has the ability to take in water, food molecule, and other necessary materials this indicates it is cabable of
Answer: If a cell has the ability to take in water, food molecule, and other necessary materials this indicates it is capable of nutrition. The answer can not be digestion or absorption because it's a term that talks about multicellular beings.
What are the two specific concerns of species diversity?
Species diversity is concerned with both
and
Answer:
Species diversity is concerned with both commonalities and differences. This is seen in the variety of species from mammals to insects. This shows the classifications of the species in the environment in order for them to survive and adopt to the changes and climate.
Explanation:
Answer:
Species diversity is concerned with both
species richness and
evenness of species abundance
Explanation:
What happens if the body is unable to maintain its blood glucose levels?
Answer:
Explanation:
Without insulin, cells are unable to use glucose as fuel and they will start malfunctioning. Extra glucose that is not used by the cells will be converted and stored as fat so it can be used to provide energy when glucose levels are too low.
how are elements in the same group in the periodic table alike
Answer:
they have similar atomic masses
Explanation:
Dimples are dominant to no dimples. What is the phenotype of a person with the genotype (Dd)?
Answer:
the answer for is heterozygous
Heterozygous is the phenotype of a person with the genotype (Dd).
What do you mean by phenotypes?The phenotype is the set of observable characteristics or traits of an organism. The term covers the organism's morphology or physical form and structure, its developmental processes.
Phenotype refers to an individual's observable traits, such as height, eye color and blood type.
A phenotypic ratio is a quantitative relation between phenotypes showing the number of times the frequency of one phenotype correlates with another.
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Which treatment is commonly used to manage stress and anxiety that are related to a disorder?
O physical therapy
O insulin injections
meditation
O manipulation
Answer:
Cognitive behavioral therapy (CBT) is the most widely-used therapy for anxiety disorders. Research has shown it to be effective in the treatment of panic disorder, phobias, social anxiety disorder, and generalized anxiety disorder, among many other conditions.
The treatment that is commonly used to manage stress and anxiety that are related to a disorder is meditation, which is the third option. The mediation helps the person recover from the stressful situation.
What exactly is the mental disorder?The mental disorder is linked to the person's personal experience; for example, if the person has had any negative experiences and is unable to cope with them, the person is more likely to enter the anxiety and depression stages. These types of mental disorders can harm a person physically too, as the nervous system does not work properly, and due to this neuronal imbalance, the digestive system, sleep cycle, and cardiac health will all be affected.
Meditation can be used as a form of therapy for the individual. Because in meditation, a person is told to practice concentration on mental health by many different methods, and eventually a person gets better with time.
Hence, The treatment that is commonly used to manage stress and anxiety that are related to a disorder is meditation, which is the third option.
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What structure is responsible for moving the chromosomes during cell division?
A. Nucleolus
B. Spindle Fibers
C. Nuclear membrane
D. Cytoplasm
Answer:
spindle
Explanation:
why dont u just google that?
How do changes in temperature at a person’s extremities (external environment) affect the person’s core body temperature?
Answer:
Human performance is negatively affected when core body temperatures are not between 36.5 °C and 37.5 °C.
Explanation:
what is NOT an example for nucleus?
Answer:
center core of a atom!!!!
Question #4 - Just checking my work.
Answer:
Crossing a black heterozygous cat (Bb) and a gray cat (bb) will give you the corresponding phenotypes and genotypes:
50%- Bb, black
50%- bb, gray
Directions Fill in the missing levels of classification.
Then write levels that are used to show scientific name.
kingdom
1.
2.
order
family
3.
4.
5. Scientific name =
Answer:
Here we go
Explanation:
So I guess here we are talking about : Hierarchy of classification...
Kingdom
Phylum
Class
Order
Family
Genus
Species
Scientific name......
I hope it was helpful
Which quantity is a graduated cylinder designed for measuring?
Answer:volume
hope this helps
Answer:
volume
Explanation: The graduated cylinder is designed for measuring the volume of a substance.
Explanation:
What color are corals when they expel their zooxanthellea?
pale translucent pink
clear with a white skeleton
creamy white
Answer:
creamy white
Explanation:
I* searched it up
The peptidoglycan cell wall and the one or two membranes present also impart a three-dimensional shape to the bacterial cell. The overall shape and arrangement of bacteria are genetically determined, so that each genus of bacteria has a characteristic shape (round, rod, spiral, etc.) and arrangements of the growing cell population (individual cells, chains of cells, or clustered cells).Bin 1 - Image of a single round bacterium.Bin 2 - Image of a single rod-shaped bacterium.Bin 3 - Image of a cluster of round bacteria.Bin 4 - Image of a string of rod-shaped bacteria.Bin 5 - Image of a comma-shaped bacterium.Bin 6 - Image of a corkscrew-shaped bacterium.Drag the descriptive terms to the pictured bacterial shapes.
Answer:
The following images of different types of bacteria are attached here-
1- Single round bacterium- Cocci
2- Single rod-shaped bacterium- Bacilli
3- Cluster of round bacteria - Staphylococci
4- String of rod-shaped bacteria- Streptobacillus
5- Comma-shaped bacterium- Vibrio
6- Corkscrew-shaped bacterium- Spirillium
Explanation:
1- Single round bacterium- Cocci -Any bacterium or archaeon that has a circular, ovoid, or usually round shape is a coccus (plural cocci). Cocci may develop in pairs, chains, or clusters during cell division, depending on their orientation and attachment. Many cocci bacteria do not have flagella and are non-motile, in contrast to many bacilli-shaped bacteria.
2- Single rod-shaped bacterium- Bacilli -A rod-shape bacterium or archaeon is a bacillus (plural bacilli), or bacilliform bacterium. In several different taxonomic classes, bacilli are found. Bacilli typically divide and are solitary in the same plane, but can combine to form diplobacilli, streptobacilli, and palisades.[2]
Diplobacilli: Two bacilli with each other arranged side by side.
Streptobacilli: Arranged bacilli in chains.
Coccobacillus: Coccus-like and oval (circular-shaped bacterium).
3- Cluster of round bacteria - Staphylococci - In the family Staphylococcaceae from the order Bacillales, Staphylococcus is a genus of Gram-positive bacteria. They appear spherical (cocci) under the microscope, and form into grape-like clusters. The species Staphylococcus are facultative anaerobic organisms (both aerobically and anaerobically capable of growth)
4- String of rod-shaped bacteria- Streptobacillus -Streptobacillus is a genus of fastidious gram-negative microaerophilic bacteria, an uncommon disease that develops in culture as rods in chains.t and can be caused by two forms of bacteria, Spirillum minus and Streptobacillus moniliformis.
5- Comma-shaped bacterium- Vibrio -Vibrio is a genus of Gram-negative bacteria with a curved-rod (comma) shape, which can cause foodborne infection in several animals, typically associated with consuming undercooked seafood. Vibrio species, usually found in salt water, are optional anaerobes that test positive for oxidase and do not form spores.
6- Corkscrew-shaped bacterium- Spirillium -Spirillum, a genus of spiral-shaped bacteria of the Spirillaceae family, aquatic with the exception of one species (S. minus) causing a form of human rat-bite fever. For any of the corkscrew-like animals, the name spirillum is used commonly.
Microbiologically, Spirillum is characterized as a gram-negative, motile helical cell with whiplike flagella tufts at each end.
hence, the images of the different bacteria are attached below-:
What is an example of a large carbohydrate molecule
Answer:
I think the large carbohydrate examples are cellulose, starch and glycogen. If am not mistaking.
Explanation:
Is composed such as glucose
.. Formulating Hypotheses Propose a hypothe-
sis to explain why angiosperms have become the
dominant type of plant on Earth.
Brodribb and Feild argue that more photosynthesis meant more carbon for growth. And that would have given the angiosperms the energy to push competitors like conifers out of the canopy around 150 million years ago, making angiosperms the most productive group of land plants in the world.
Which of the following established the federal court system including circuits and appellate courts
Answer:
C. The judiciary act of 1789
Explanation:
knowing what you know about how a substance travels in diffusion in order for carbon dioxide to leave the blood and enter the alveoli there would be higher or lower concentration of carbon dioxide
Answer:
CO2 moves down its concentration gradient by simple diffusion. Therefore, CO2 would have to be high in the blood, and low in the alveoli for simple diffusion to happen, this would be done by passive diffusion and thus, simple diffusion.
Remember that in simple diffusion you go from an area of a high concentrated solute towards an area of low concentrated solute.
If a plant of a maple tree has more chloroplasts than the leaf of a tomato plant, then
A. the maple tree will have an increase in photosynthetic potential
B. the maple tree will have an increase in respiration potential
c.the maple tree will have an increase in carbon dioxide production
D. the maple tree will have an increase in water production
Answer:
I think it's A and B (viewpoint)
А
mutation occurs when a base in the DNA sequence is replaced by a different base.
Answer:
Substitution
Explanation:
I just took the quiz
Answer: Substitution
Hope this helps!
What is the speed of a car that traveled 16.5 m in 3 seconds? *
5.5 m
5.5 m/s
22 m
O 22 m/s
HELP