Answer:
Physiological reactions to stress in the alarm stage include: increased heart rate and blood pressure, dilated pupils, rapid and shallow breath, and increased cortisol levels.
Explanation:
Hans Seyle, a medical doctor proposed a model called the General Adaptation Syndrome (GAS) to explain the effects and stages of coping with the stress. The GAS model has three stages, known as:
1. Alarm stage
2. Resistance stage
3. Exhaustion stage
The alarm stage is the first stage of responding to stress. During this stage, the fight-or-flight response is activated when an individual is experiencing stress. This stage involves the following physiological reactions:
1. Increased heart rate
2. Increased blood pressure
3. Dilated pupils
4. Rapid and shallow breath
5. Increased cortisol levels
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.
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.
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.
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.
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
one example of physical aspect of environment.
Answer:
Soil, rivers, mountains, lakes etc
Explanation:
The physical environment encompasses the natural and man made part of the environment. Examples are mountains, lakes, valleys, rivers, etc.
The physical environment supports the activities of other components of the environment. All the bioitc and abiotic factors interacts to furnish this aspect of our environment.
This aspect of the environment helps to regulate and gives a balance to other aspects of the environment. We should note that all aspects of the environment constantly interacts with one another and are not independent of each other.
✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨✨
These include all vegetation, microorganisms, soil, rocks, atmosphere, and natural events. Universal natural resources and physical phenomenon which lack clear-cut boundaries. These include climate, air, water, energy, radiation, electric charge, and magnetism.
are you an Indian...... !!!
⚡⚡⚡⚡⚡⚡⚡✨✨✨✨⚡⚡⚡⚡⚡⚡
Which of the following statements is true of cartilage and bone development?
A. Some cartilage becomes bone through ossification during childhood development.
B. Cartilage produces white blood cells, which are necessary for immune system health.
C. Cartilage is in the nose and ears, and cartilage can't become bone.
D. Cartilage is the primary material responsible for moving sharks' bones.
Answer:
A. some cartilage becomes bone through ossification during childhood development.
Explanation:
Ossification is a process of bone remolding, this starts from fetal stage and continues up to adolescence. The cartilage cells are replaced by the osteoblasts for the formation of bones in the cluster form.
Answer:
option: A
Explanation:
The ossification process allows the formation of new bones in the body. The process begins from the fetal stage and it continues till adult age. The osteoblasts cell replaces the dead cartilagenous cells.
The hematopoietic stem cell synthesizes WBCs not cartilage. The cartilage can easily be transformed to a bone.The cartilage is not primary material for moving shark bones. As the baby grows the small bones fuses with each other thus forming large bones. So the option A is correct.
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.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.
Explain how a chromosome condenses at the beginning of mitosis
Answer:
answer in explanation:
Explanation:
Chromosomes must condense at the beginning of mitosis so they can be separated, with relative ease, into equivalent halves. Chromosomes adopt a compact form to make them suitable for transport.
Condensation also organizes the DNA molecule in such a manner that the chance of the molecule being broken and/or lost is minimized. If the chromosome breaks in one way or another, mutations occur.
Ecologist Mark is trying to identify the type of pollution that caused excessive algae growth on a river and killed fishes and plants. Which type of pollution
caused this situation?
A.thermal pollution
B.light pollution
C.nutrient pollution
D.noise pollution
Nutrient pollution is the type of pollution that caused excessive algae growth on a river and killed fishes and plants.
What is meant by Nutrient pollution?Nutrient pollution occurs when there is an excess of nitrogen and phosphorus. 50 out of 50 states are impacted by nutrient pollution. States have identified about 15,000 waterbodies in the United States with nutrient-related problems.Nutrient pollution is the type of pollution that caused excessive algae growth on a river and killed fishes and plants.
To learn more about Nutrient pollution refer:https://brainly.com/question/14984471
#SPJ2
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:
Identify the three parts that create in amino acid
The carboxyl group, the amino group, and the central carbon that contains the R group.
Hello Rimind, okay?
First good night. ⇔
A protein is made up of amino acids. Picking up the word amino acid, and breaking it in half, will turn into: amino + acid.
Every time you find:
C = O
l
OH
It will be acidic, carboxylic acid.
Every time you find:
NH₂
It will be Amino / Amine.
Being:
C = O
l + NH₂ = Amino Acid.
OH
Note:
One part of the amine grouping is basic (Base) and another (acidic), so we can call it amphoteric (Amino acid which can be shared as much as Base, as much as Acid.)
attention :
There are Central Carbon (Alpha) that has four combinations being ultimately radical and is a determinant of one amino acid for the other. To be an amino acid, there are three regions. Always a bond will have an amine grouping, another bond with acid grouping and the hydrogen represented as (H)
Hope this helps. Good studies !!
Any questions please contact us.
Which hotel do you think is most likely to move ahead in market competition?
A. a hotel that provides basic amenities
B.a hotel that provides luxurious amenities
C.a hotel that shows understanding of customers' latent needs
D.a hotel that gives discounts
Answer:
c
Explanation:
if they dont care about what you want it cant be a good hotel
A hotel that shows an understanding of customers' latent needs is most likely to move ahead in market competition. Thus, the correct option is C.
What is the market competition?Market competition may be defined as an environment in a business where different firms have to compete with one another on the accounts of their merits of goods and services.
If a hotel does not represent the basic or luxurious needs of the people, it will definitely move ahead in the market competition.
Therefore, the correct option for this question is C.
To learn more about Market competition, refer to the link:
https://brainly.com/question/24877850
#SPJ2
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.
what is the largest populations that an ecosystem an support over time?
a. death rate
b. carrying capacity
c. immigration rate
d. keystone
Answer:
b. carrying capacity is the largest populations that an ecosystem an support over time
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.
camels have adaptations that allow them to survive in the hot desert. match the benefits to the adaptations.
Explanation:
-They have a thick coat of hair to protect them from the sun.
-They have a wide, soft feet sothat they can walk for a long time in hot sand.
Answer:
1st > protects from predators
2nd > provides energy source
3rd > maintains homeostasis
Explanation:
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:
https://brainly.com/question/18536684
19. RNAi is a technique that silences genes by targeting them and degrading their mRNA. How can this technique be used in scientific
laboratories?
A. RNAi allows scientists to turn off one gene specifically to study its effect.
B. RNAi is observed in nature, but it can't be used in laboratories
C. RNAi has been used in laboratories to make bacteria more susceptible to antibiotics, but has limited application in eukaryotic cells
D. RNAi is a powerful tool for degrading mRNA, but because it doesn't degrade other types of RNA, its use is limited.
Answer:
RNAi allows scientists to turn off one gene specifically to study its effect.
Explanation:
RNAi is widely used technique for silencing the genes by targeting them and then degrading their mRNA. It silence the genes so that their functions could be studied. It is extensively used in research and can be utilized for any gene just by designing RNAi for that specific gene. It can silence a single genes which make it more useful not only in labs but also in therapeutic approaches for treatment of diseases, cancers etc.
Which two animals are able to generate internal heat to maintain their body temperature in a cold environment?
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.
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.
Learn more about protein channels here https://brainly.com/question/911013
#SPJ2
how does a pluripotent cell differ from a totipotent cell
Answer:
Pluripotent cells can be almost anything they want to be while totipotent are for ex, like zygotes. They can give rise to placenta and embryo
Answer:
Pluripotent cells, unlike totipotent ones, do not have the capacity to originate a complete living being.
Explanation:
Both pluripotent cells and totipotent cells are examples of stem cells.
Totipotent cells are those that have the capacity to transform into any cell type that can be found in the organism, which can give rise to a complete living being. are found in the embryonic zygote.
Pluripotent cells, on the other hand, do not have this same capacity, because they are not originated from extraembryonic tissues. Examples of these cells are the embryonic stem cells in the basticyst.
Match the terms to their definition. 1. chromosome a cell whose nucleus is not bound by a membrane 2. eukaryote a genetic characteristic of an individual 3. gene a specific sequence of DNA nucleotides that carry hereditary traits 4. prokaryote a cell that has a membrane-bound nucleus 5. trait tight coils of DNA
Answer:
1. chromosome: tight coils of DNA
2. Eukaryote: a cell that has a membrane-bound nucleus
3. Gene: a specific sequence of DNA nucleotides that carry hereditary traits
4. Prokaryote: a cell whose nucleus is not bound by a membrane
5. Trait: genetic characteristic of an individual
Explanation:
Chromosomes are the thread-like structures that appear during cell division. Each chromosome is made up of DNA tightly coiled with its packing proteins.
A cell is defined as eukaryote or prokaryote on the basis of the presence of a membrane-bound nucleus. The cells that lack the membrane-bound nucleus and other membrane-bound organelles are called prokaryotic cells. Example: bacteria.
The cells that have a membrane bound nucleus in which DNA is present are called eukaryotic cells. Example: Plant cells.
A stretch of DNA that code for a particular protein and thereby regulate specific genetic trait is called a gene. Genes are present on chromosomes and are carried from one generation to next to maintain the genetic traits.
The features of living beings regulated by the gene are called trait. Example: skin color, eye color, etc.
Correct matches: 1-Chromosome to tight coils of DNA, 2-Eukaryote to a cell with a membrane-bound nucleus, 3-Gene to sequence carrying hereditary traits, 4-Prokaryote to a cell without a membrane-bound nucleus, and 5-Trait to a genetic characteristic.
The terms and their correct definitions would be matched as follows:
Chromosome - tight coils of DNAEukaryote - a cell that has a membrane-bound nucleusGene - a specific sequence of DNA nucleotides that carry hereditary traitsProkaryote - a cell whose nucleus is not bound by a membraneTrait - a genetic characteristic of an individualChromosomes are structures that contain genes, which determine specific traits in an organism. Eukaryotes are organisms whose cells have a membrane-bound nucleus which houses these chromosomes, while prokaryotes lack such a nucleus, often having DNA concentrated in a nucleoid.
Which species is most likely to exhibit clumped dispersion?
Clumped dispersion is a pattern in which individuals in a population are clustered together in groups, which is most commonly observed in animals that live in groups such as elephants.
Explanation:Clumped dispersion is a pattern in which individuals in a population are clustered together in groups. This pattern is most commonly observed in animals that live in groups, such as schools of fish or herds of elephants. For example, elephants travel together in herds and exhibit clumped dispersion.
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.
During the first phase of the ovary cycle, the ______ matures within a follicle
A. Vulva
B. Uterus
C. Ootcyte
D. All of the above
Answer:
C. Ootcyte
Explanation:
During the first phase of the ovary cycle, the Ootcyte matures within a follicle.
Answer:
Oocyte
Explanation:
The cortex of ovaries has many follicles and each follicle contains an immature egg in various developmental stages. The immature egg present in the follicle is called oocyte.
The first stage of the ovarian cycle, that is the follicular phase is marked by the beginning of the development of oocytes in several follicles under the influence of follicle stimulating hormone.
However, only one follicle continues developing. By the end of the follicular phase, the mature follicle (the Graafian follicle) bears secondary oocyte in its fluid-filled cavity.
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
An accumulation of different sedimentary and metamorphic rocks combined with scraps of ocean crust is called _____. a dome a volcanic island arc an accretionary wedge a fault-block mountain
Answer:
An accumulation of different sedimentary and metamorphic rocks combined with scraps of ocean crust is called an accretionary wedge.
ANSWER:
Accretionary wedge is the accumulation of metamorphic and sedimentary rocks combines with "scraps of ocean crust".
EXPLANATION:
The sediments get accreted onto a tectonic plate which is non-subducting in nature. Most of the components of accretionary wedge include marine sediments and also erosional products of volcano island arcs. Tectonic collisions are the reason for the formation of accretionary wedges. The shape of an accretionary wedge is usually a triangle and continues to grow in size when it reaches critical taper.