Plants living in dry areas face conflict.
EXPLANATION:
Since they live in dry areas they will undergo more transpiration. If they open stomata during the day there will be excessive loss of water vapor that will result in their death. Therefore plants living in this area open the stomata during the night to obtain Carbon dioxide.This checks the loss of water through transpiration and provides the carbon dioxide for photosynthesis.Abstract
Plants regularly face dry conditions. Not having enough water poses a serious threat to a plant’s ability to grow and develop or even just survive! If plants die, we will not have enough food to eat! How do plants manage to survive during water shortages? They must somehow be able to sense, respond, and adapt to changes in water availability. They do this through a range of techniques that allow for a plant to combat water shortages. A plant’s structural “armor” helps it to decrease the amount of water it loses to the environment and increase water storage. Plants respond to water shortages in very complex ways. These responses can include changes in the plants’ growth and in their ability to protect themselves against toxic chemicals that accumulate in the plant during dry periods. All of a plant’s responses are directly controlled by the plant’s genes. If we can understand the genes that are involved in protecting plants against drought, in the future we might be able to make genetically modified crops that can tolerate global warming and climate changes.
Have you heard people speaking about global warming and climate change? Do you know what these terms mean? These terms basically imply that the earth is getting hotter every year. These higher temperatures lead to unexpected and unusual weather patterns. One of these extreme weather patterns is frequent and severe droughts. Droughts are very long dry periods without any rain. What do severe droughts mean for plants? Well, plants are sessileAn organism that can’t move and stays in one place, like a plant., which means they stay in one place and can’t move around like we can. They can’t pull up their roots and relocate to a shady or damp spot. Therefore, plants somehow need to deal with these ever-increasing drought conditions, or they will simply die. Remember, plants are our food. We eat plants raw or cooked (those vegetables your mom insists you eat!) or processed, like your favorite box of breakfast cereal [which is made from wheat or maize (corn)]. So, if plants die because of droughts, we will not have enough food to eat!
If there is no water around, what can plants do to survive? Amazingly, all plants seem to have a number of genes for drought-defense strategies encoded in their DNA. Genes are small sections of DNA, like chapters in a book. How they use these genes determines their ability to survive drought.
Some plants are drought-resistant. When we talk about drought-resistant plants, we mean plants that can withstand dry conditions without dying. A drought-resistant plant can survive drought by using three defense strategies: escaping, avoiding or tolerating the loss of water [1]. Drought tolerant plants are quite rare in nature and can endure long periods with no water at all. Some of the most spectacular drought tolerant plants are called resurrection plants. Resurrection plants are able to survive long periods (up to 3 years!) without any water. However, give them a little water and they will spring back to life in a day or two. Other drought-resistant plants may not be as spectacular, but they too can survive short periods of drought using special techniques and defense strategies.
Some Plants Have Special Structures That Help Them to Survive in Drought Conditions
Some plants are able to survive droughts because of their unique structures. These structural features include the external armor of plants that protects them against water loss, as well as tools to help the plants absorb and store water. Drought-resistant plants can be specially adapted to live and survive in very dry environments. These plants often look quite different from plants living in areas where water is easily available. The drought-resistant plants normally have special “avoidance” (one of the defense adaptations!) features to make sure less water is lost to the environment or that more water gets absorbed and stored in the plant. Plants called desert succulentsPlants that have thickened and fleshy leaves and stems, in which water can be stored. are a good example of plants that have drought avoidance strategies [2]. Desert succulents have thick fleshy leaves, which often don’t resemble leaves at all, and they have a thick waxy layer to prevent water loss. Desert succulents also have extensive root systems that search for water under the dry desert soil (Figure 1). Some succulents have specialized roots that form large bulb structures, which are actually underground water reservoirs for the plant. These plants can survive years of drought using the water stored in their bulbs.
Vacuoles in a cell are used for:
Answer:
the storage of water in plants
Answer:
Vacoules in cells are used for the storage of water.
Proteins and DNA are stored in Nucleus.
why have 900 megahertz (mhz) industrial, scientific, and medical (ism) band wireless local area networks (wlan) lost favor in comparison to 2.4 gigahertz (ghz) and 5 ghz frequency systems?
900 MHz devices are more expensive and provide slower data output.
What is wireless local area networks (WLAN)?WLAN is defined as a wireless distribution of network used for two or more devices.
The industrial, scientific, and medical (ism) band is a WLAN that makes use of radio frequency
for domestic network purposes.
A gigahertz connection delivers more bits per second more than a megahertz connection.
Therefore, 900 MHz cannot be compared with 2.4 gigahertz (ghz) and 5 ghz frequency systems because 900 MHz devices are more expensive and provide slower data output.
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Looking at the graph (photo attached), what is the independent and dependent variable?
Answer:
Temperature(0C)= Independent
Light Intensity(candelas)= Dependent
Explanation:
Dependent is always the Y-axis (vertical line)
Independent is always the x-axis(horizontal line)
How does the intracellular fluid compartment differ from the extracellular fluid compartment?.
Answer:
The main difference between intercellular and extracellular fluid is that intracellular fluid is the liquid found inside the cell whereas extracellular fluid refers to all the body fluids outside the cell.
an excretory organ in our bod?
Explanation:
The excretory organ in our body are :
Kidney liver intestine lungs...etc...[tex]...[/tex]
How can aids be transmitted from one person to another.
Answer:
Sexual Activicty
Explanation:
Fig. 6.1 shows four species of myriapod, not drawn to the same scale.
Polydesmus
denticulatus
1
Fig. 6.1
(a) State three features of all myriapods that are visible
Answer:
Many pairs of legs.Two body sections (head and trunk)One pair of antennae on the head.proteins not expressed on normal cells but found on tumor cells are called _____.
Proteins not expressed on normal cells but found on tumor cells are called tumor specific antigen.
What are cancer cells?Cancer cells are cells whose cells cycles and growth has been altered as a result of mutation in their DNA resulting in abnormally high growth rates.
Cancer cells are also called tumor cells.
Proteins that are expressed in tumor cells but not on normal cells are called tumor specific antigen.
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Why the nucleus can’t be seen at end of prophase in eukaryotic cell?
Is it because the nucleus breaks down or nuclear membrane and why? Please
The nucleus can't be seen at the end because the nucleus envelope breaks down and nucleus disappears
Explanation :-
** chromosomes contract , spiral and becomes visible even in light microscope and nucleoli becomes smaller(material to chromosomes)
** chromosomes split length wise to form chromatids connected by centromeres
** nuclear membrane breaks down
** nucleus disappears
ASAP ASAPWhich of the following is an example of Genetic Engineering?
A. Mating the most productive plants together so their offspring will have a high yield.
B. Altering the DNA of yeast to create vaccines.
C. Raising pure breeds of dogs.
D. Altering the chemical structure of alloys to create better characteristics.
Answer:
D
Explanation:
The literal definition of genetic engineering is the deliberate modification of the characteristics of an organism by manipulating its genetic material.
D. Altering the chemical structure of alloys to create better characteristics.
is the best example of Genetic Engineering
what is genetic engineering?Genetic engineering (also called genetic modification) is a procedure that makes use of laboratory-primarily based technologies to alter the DNA makeup of an organism. this could involve changing a single base pair (A-T or C-G), deleting an area of DNA, or including a brand new segment of DNA.
Genetic engineers alter, splice, eliminate, and rearrange genes a good way to modify an organism or groups of organisms.
uses of genetic engineering
In Medicine: Genetic engineering can be applied to:
Manufacturing of drugs.Creation of model animals that mimic human conditions and,Gene therapy.Human growth hormones.Follicle-stimulating hormones.Human albumin.Monoclonal antibodies.Antihemophilic factors.Learn more about genetic engineering here
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Which of the following organic compounds is the main fuel supply for cellular work?
a. sugars
b. lipids
c. nucleic acids
d. proteins
I am pretty sure it's sugars but I want to check
How are manures different from fertilizers? List out the impacts of using fertilizers over and over and how can it be prevented.
The main difference between Manure and Fertilizer is that Manure is natural that consists of the beast and factory wastes, whereas Fertilizers are chemical substances that are nutrient-rich.
Difference between manures and fertilizers-
Manure is animal excreta(waste) used for the good growth and development of plants while fertilizers are the chemical substances used to increase crop yield.Manure is natural (no chemical used), whereas fertilizers can be organic or (man-made)synthetic.Manure supplies fewer nutrients in fields whereas fertilizers are rich sources of nutrients.Manure is heavier on the flip side fertilizer is not bulkierManure is composed of animal dung, human wastes, and plant residues whereas fertilizers are composed of inorganic salts.Manure is soluble in water but takes time while fertilizers have more solubility in water.Manure unloose Nitrogen content in the air, if left in the environment on the other side, nitrogen loss from fertilizers is less.Manure makes the soil texture better by making it pourable while fertilizers also improve soil texture but the improvement is less in comparison to manure.learn more about fertilizers here:
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A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in:.
A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in an increase in blood flow through the vessel.
Meaning of smooth musclesmooth muscle can be defined as a muscle in the body that is non striated and involuntary in nature.
Smooth muscles are mostly found in hollow organs, passageways and tracts of some systems.
In conclusion, A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in an increase in blood flow through the vessel.
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Select the correct answer from each drop-down menu.
The nervous system and the muscle system respond to stimuli to produce motion. The movements of
muscles are mostly voluntary. Involuntary movements occur in these muscles when the nerve impulse passes from a sensory neuron to a motor neuron via an interneuron in the
.
The nervous system and muscular system respond to stimuli to produce movement.
What is nervous impulse?
The nerve impulse corresponds to an electrical current that propagates through neurons, thanks to a process of membrane depolarization. This depolarization process occurs through stimuli and its function is to transmit certain information to other cells (nervous, muscular or glandular).
With this information, we can conclude that the nervous system and muscular system respond to stimuli to produce movement.
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Answer:
skeletal
spinal cord
Explanation:
just took test on edmentum and got 5/5
Question 7 of 10
How much of Earth is covered in water?
OA. 50%
B. 95%
OC. 25%
OD. 75%
The best and closest definition of "biodiversity" would be?
a) a member within a population
b) a single organism in a community
c) all of the different species of living things in a given area
d) the non-living components of an ecosystem.
17. What processes in the water cycle above are involved
in the movement of phosphorous and nitrogen
contaminants into lakes and oceans?
Answer:
The Nitrogen Cycle, Carbon Cycle, and the Phosphorous Cycle
Explanation:
These cycles together work together in harmony with the water cycle, transferring nutrients into the atmosphere and breaking them down into the soil.
The frequency of a wave does not change as it passes from one medium to another. What will most likely happen if a light wave moves from the air into a solid? The wavelength of the light wave will increase. The speed of the light wave will decrease. The wavelength of the light wave will remain the same. 0 The speed of the light wave will remain the same.
Answer:
I think the answer is B. The speed of the light wave will decrease.
Explanation:
Light waves travel fastest in empty spaces, and slowest in solids.
I hope this helps!
Answer:
B. The Speed Of The Lightwave Will Be Modified As It Enters Another Medium (State Of Matter)
Explanation:
Got it right on edge
1.Explain Cytotaxonomy and Chemotaxonomy and Numerical Taxonomy.
2.Difference Between Chemotaxonomy And cytotaxonomy?
Answer:
Cytotaxonomy refers to the classification of biological materials based upon similarities and differences of cellular structure and number of chromosomes present in the cell afterwards while .:::: chemotaxonomy refers to the classification of biological materials based upon similarities and differences of the ...Chemotaxonomy is based on the similarities and differences in biochemistry such as a sequence of amino acids in proteins, whereas, cytotaxonomy is the classification based on cellular characteristics such as chromosomes number and behaviour.What effect will a heterotropic activator have on a sigmoidal kinetic plot of V versus [S]?
An effect of a heterotropic activator on a sigmoidal kinetic plot of V₀ versus [S] is a shift to the left by the curve.
What is an enzyme?An enzyme refers to a biological catalyst that speeds up the rate of a chemical reaction, especially by lowering the activation energy of its chemical reactants.
In Science, a heterotropic activator is a regulatory molecule which serves as an activator of the enzyme. Thus, an effect of a heterotropic activator on a sigmoidal kinetic plot of V₀ versus [S] would be a shift to the left by the curve.
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Consider the diagram of an internal feedback mechanism that the body uses to help maintain homeostasis.
The internal feedback mechanism is shown. Stimuli goes to the receptor to the coordinator to the effector to the response and then to feedback.
What is the role of the central nervous system in this model?
a) coordinator
b) effector
c) response
d) stimuli
The role of the central nervous system in this model is as coordinator (Option a).
What is the central nervous system?The central nervous system is a fundamental body system that acts by sending and receiving signals from the environment.
The central nervous system can act as a coordinator by modulating signals and thus maintaining the internal equilibrium (homeostasis).
In conclusion, the role of the central nervous system in this model is as coordinator (Option a).
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What is the name of the Coenzyme that binds with Acetyl Acid?
The name of the coenzyme is Coenzyme A.
Citric acid cycleThe intermediate step between glycolysis and the citric acid cycle is the production of acetyl-co A.
Acetyl-co A is produced by the oxidative decarboxylation of the pyruvate molecule generated from glycolysis in the matrix of the mitochondrion.
The pyruvate molecule is first transformed into an acetyl group. The enzyme, Coenzyme A, binds with the acetyl group to form acetyl-co A.
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which human evolutionary theory is supported by analysis of maternal inheritance through analyzing mitochondrial dna?
The human evolutionary theory is supported by analysis of maternal inheritance through analyzing mitochondrial dna is; Recent African Origin Theory.
What is human evolution theory?Human evolution theory is simply defined as the lengthy process of change by which people originated from apelike ancestors.
Now, the correct answer to the question will be "Recent African Origin Theory". This is because the "recent African origin" model proposes that all modern non-African populations are substantially descended from populations of Homo sapiens that left Africa after that time.
The description above corresponds with the idea that analysis of maternal inheritance is done through analyzing mitochondrial dna.
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Please help me out
It would be appreciated
Answer:
A
Explanation:
A hypothesis is a prediction of what will happen which is waht happens in section A.
Section B is an observation of the cause of the rise in CO2 levels
complete the sentence:
primary consumers receive about _________ of the energy available in biomass from producers.
A. 100 percent
B. 50 percent
C. 35 percent
D. 10 percent
Answer:
D. 10 percent
Explanation:
s. aureus has been isolated from george’s infected wound. to satisfy koch’s postulates, what would george’s doctor need to do with the isolated s. aureus?
George's doctor will need to culture the isolated S. aureus to determine if the isolated bacterium is the one responsible for the infection.
What is Koch's postulates?Robert Koch was a famous microbiologist that made some postulates as follows:
The bacteria must be present in every case of the disease.The bacteria must be isolated from the host with the disease and grown in pure culture.The specific disease must be reproduced when a pure culture of the bacteria is inoculated into a healthy susceptible host.The bacteria must be recoverable from the experimentally infected hostAccording to this question, S. aureus has been isolated from George’s infected wound.
This means that in accordance with Koch's postulates, George's doctor will need to culture the isolated S. aureus to determine if the isolated bacterium is the one responsible for the infection.
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Which of the following is not a characteristic of living things
Answer:
C. Must be able to reproduce
Explanation:
A. All living things must grow and develop
B. Single-celled organisms exist and are considered living things.
D. All living things must have DNA in their cells.
Environmental degradation decrease the production. why
Environmental degradation decreases production because it obliterates the environment for the survival of plants and crop species by miscellaneous factors.
What is Environmental degradation?Environmental degradation may be characterized as the deterioration of the environment through a deficiency of natural resources such as air, water, and soil. In other words, it may refer to the obliteration of ecosystems and the termination of wildlife.
It influences productivity by cutting down forests and trees, privileging their livestock to overgraze in fertile lands and devastate its productivity, utilization of harmful chemicals in agricultural practices, farming in marginal lands, etc.
Therefore, it is well described above.
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Which cells are present during acute inflammation?
Neutrophils are the cells which are present during acute inflammation.
What is Neutrophil?These cells are referred to as granulocytes and make up of majority of the white blood cells.
When inflammation occurs, the neutrophils go to the site and destroy the micro-organisms through ingestion or releasing enzymes so as to keep the body safe.
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The __________ nervous system is the subdivision of the peripheral nervous system that regulates body activities that are generally not under conscious control
The autonomic nervous system is responsible for regulating involuntary body activities.
The nervous system coordinates the bodily functions of muscles to produce actions.Involuntary activities such as circulation, heartbeat, digestion, breathing, and peristalsis for example are generally not under our conscious control.
These are otherwise known as involuntary actions controlled by the autonomic nervous system which in turn is a subdivision of the peripheral nervous system (this system branches off the spinal cord to all other parts of the body.
Other parts of the nervous system would be the central nervous system divided into:
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