How does terracing relate to mass movements?
Answers
Threats and Impacts Attended. Transforming the landscape of hillsides prone to erosion into cultivation terraces increases agricultural productivity and food security. Terraces prevent landslides and erosion by reducing the intensity of runoff.
Answer:
Terracing along slopes where bedding planes are steeply inclined. ... Retaining walls can be used to stabilize a slope with unconsolidated material. Proper drainage helps relieve pore pressure behind retaining walls. Building on terraced slopes adds weight to slope encouraging movement.
Related Questions
T or F 7. Trp Operon - which determine the formation and arrangement of body parts in
multicellular organisms, control gene expression by regulation of - DNA translation
Answers
Answer:
Trp Operon.
Explanation:
Trp Operon determines to control gene expression by regulation of DNA translation. The trp operon is found in E. coli bacteria, is a group of genes that encode biosynthetic enzymes for the production of amino acid tryptophan. The trp operon refers to turned "on" when tryptophan levels are low whereas refers to turned "off" when tryptophan levels are high. The trp operon is controlled and regulated by the trp repressor.
many insects have large powerful mandibles which they use to hold and tear apart food. what analogous structures in mammals serve the same function?
Answers
A chewing insect uses its largest and most powerful mouthparts, the mandibles, to masticate food. On the coronal plane, the mandibles of insects are moved by two sets of muscles called the abductor muscles.
What do the mandibles of insects look like?Some insects and other arthropods have paired jaws called mandibles. Just "jaws" is another name for them. They are utilized for grasping, biting, and cutting and move sideways.
What do an insect's mandible and maxilla do?An insect's mouthparts include maxillae. In a pair, the maxilla are positioned behind the mandibles. Maxillae typically have a sharp tip at the end, which gives them a pincer-like appearance.
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Explain the properties of proteins and its general structure
Answers
Answer:
The common property of all proteins is that they consist of long chains of α-amino (alpha amino) acids. The general structure of α-amino acids is shown in . The α-amino acids are so called because the α-carbon atom in the molecule carries an amino group (―NH2); the α-carbon atom also carries a carboxyl group (―COOH).
Explanation:
Colour and Taste
Proteins are colourless and usually tasteless. These are homogeneous and crystalline.
Shape and Size
The proteins range in shape from simple crystalloid spherical structures to long fibrillar structures. Two distinct patterns of shape
Name the two things the fetus does in preparation for birth.
Answers
Answer:
During the 28th and 32nd weeks of pregnancy, the baby will begin turning itself into a head-down position, and the baby will also move lower in the pelvis.
Explanation:
A student compared these diagrams. The student found that each of these organisms had a heart to pump
blood. Which statement is supported by the student's findings
Answers
Answer:
The student found that each of these organisms had a heart to pump blood.
All of the following are ways the body loses water except a. through feces b. vaporization of expired air c. insensible loss d. cellular respiration
Answers
All of the following are ways the body loses water except option D: cellular respiration.
Cellular respiration is a metabolic process that occurs within cells to produce energy in the form of ATP. While cellular respiration does involve the consumption of oxygen and the production of carbon dioxide, it does not directly result in the loss of water from the body. The water produced as a byproduct of cellular respiration is typically recycled and used within the body.
Insensible loss refers to the loss of water from the skin and respiratory tract that is not readily noticeable. It occurs through processes such as evaporation from the skin and the exhalation of water vapor during breathing.
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Experiments that determined genetic fine-structure, such as the genetic experiments performed by Benzer, revealed that the ___________ is the unit of mutation and the unit of recombination, i.e., that this is the unit that is indivisible by the processes of mutation and recombination.
Answers
Experiments that determined genetic fine-structure, such as the genetic experiments performed by Benzer, revealed that the base pair is the unit of mutation and the unit of recombination.
The experiments conducted by scientists like Seymour Benzer have contributed significantly to our understanding of genetic fine-structure. Through their research, it was revealed that the base pair, which refers to the pairing of nucleotides (adenine with thymine, and cytosine with guanine), is the fundamental unit of mutation and recombination. Genetic mutations occur at the level of individual base pairs, where changes in the DNA sequence can result in altered genetic information.
Recombination, on the other hand, involves the exchange of genetic material between different DNA molecules, often occurring at specific sites within the base pair sequence. These experiments provided evidence that the base pair is the indivisible unit affected by these genetic processes, forming the basis of our understanding of molecular genetics.
The discovery of the base pair as the unit of mutation and recombination has been instrumental in advancing our knowledge of genetic mechanisms and their implications in inheritance and genetic variation.
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Acetylcholine receptors on skeletal muscles are described as being "ionotropic" receptors because:
A) these receptors have a corequisite binding of magnesium ions in order to function.
B) binding of acetylcholine to its receptor triggers the release of a second messenger, e.g., cAMP, inside the muscle.
C) binding of acetylcholine to the receptor protein converts the protein to an open ion channel.
D) acetylcholine is an excitatory stimulus to the muscle.
E) the receptors ionize as a result of binding acetylcholine, and this directly alters membrane potentials.
Answers
C) Binding of acetylcholine to the receptor protein converts the protein to an open ion channel.
The right response is C) restricting of acetylcholine to the receptor protein switches the protein over completely to an open particle channel.
Acetylcholine receptors on skeletal muscles are named "ionotropic" receptors on the grounds that their limiting to acetylcholine straightforwardly prompts the kickoff of particle channels. These receptors are otherwise called nicotinic receptors.
At the point when acetylcholine ties to the receptor protein, it causes a conformational change in the receptor, bringing about the development of an open particle channel inside the receptor complex.
This open particle channel permits the entry of particles, especially sodium (\(Na^+\)) and potassium (\(K^+\)) particles, across the muscle cell layer. The deluge of sodium particles prompts depolarization of the muscle cell, starting an activity potential and at last prompting muscle constriction.
Not at all like metabotropic receptors, (for example, G protein-coupled receptors), which depend on second courier frameworks to send signals, ionotropic receptors intervene their belongings through direct particle channel gating.
In this way, choice C precisely portrays the idea of acetylcholine receptors on skeletal muscles as ionotropic receptors. The limiting of acetylcholine switches the receptor protein over completely to an open particle channel, permitting particles to stream across the film and start muscle cell action.
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b. Describe the fragile ecosystems in your environment that need protecting.
such as wetlands, desert areas, riparian areas, forested and deforested areas,
etc. How are these areas protected? Provide data from your research to explain
your answers. (3 points)
Answers
Answer:
Explanation:
Fragile Ecosystem is a system which is very tender and under threat of loosing it's original condition and has reached its level of threshold beyond which it would not be able to sustain any damage.
Factors which make an ecosystem fragile are the following :-
1) Anthropogenic - Man is a major agent of change in our ecosystem and is doing great damage to the existing avenues.Distructing ventures of humans can be further divided into :-
a) Economic- Ecosystem equilibrium is disturbed for meagre financial gains.Minerals exploration and Tourism are two major factors for disturbing the
ecosystem.
Ex - Increasing number of hotels coming up in sensitive zones as WESTERN GHATS.
b) Political - Despite continuous reports ad committes on the worsening condition of ecosystems, the recommendations are not executed owing lack of political will and lethargic attitude of
administration
c) Psychological - Inhabitants as well as policy makers don't consider the protection of ecosystem at war footing because psychologically they dont consider it as a real threat and hold no responsibility for the outcomes
Regions in India having fragile ecosystem are:-
1)WWestern Ghats which are also under biodiversity rich list of UNESCO
2) Himalyan Mountains ranging from Kashmir to North East India.
3) Sunderban which is the largest delta in the world is also a fragile zone.
India has a well researched strategy to support the fragile ecosystems but effective implementation along with general awareness among the masses about its crucial role in the environment needs to be emphasised.
A peacock is significantly more colorful than a pea hen and has a much larger tail. These traits allow the peacock to attract a mate but also make the peacock more visible to predators. This is an example of:
Answers
Answer:
This is an example of runaway sexual selection
Explain- a theory of female mate selection proposing that certain male traits with little or no survival advantage are nonetheless so sexually attractive to females that they choose mates with these traits and thereby ensure male offspring with the same attractive traits.
What are the effects of soil pollution?
Answers
Answer:
Soil pollution produces negative effects for the environment.
Explanation:
Soil pollution can cause many different negative effects for the environment and for organism health. Some effects are:
Nutrient imbalance - plants cannot get enough nutrients in one area since the soil is either devoid of nutrients or high one 1 nutrient and too low on othersAcidification - pollution can cause the soil to become acidified, affecting organisms and the water cycle. This acid will be harmful to plants and harmful to animals drinking it. Since it also affects the water cycle, it can affect humans by burning skin if touched or polluting our drinking sourcesContamination of groundwater - with soil pollution, it can seep deep into the Earth. This can cause natural aquafers and underground lakes/water to become polluted as well, giving us even less freshwaterAll in all, soil pollution is not positive at all and should be reduced at all costs to help nature and our planet Earth.
suppose two parents, a father with the genotype aabbccddee and a mother with the genotype aabbccddee, want to have children. assume each locus follows mendelian inheritance patterns for dominance.
Answers
When considering the genotype of the parents aabbccddee and aabbccddee, it can be concluded that all their offspring would be of the same genotype aabbccddee.
Same genotype is because the parents are homozygous, meaning they carry two copies of the recessive allele at each locus that has two alternative alleles.Based on the information given, all of the children will inherit two recessive alleles at each locus because the parents have only recessive alleles.
Mendelian inheritance states that traits are inherited from parents in a predictable manner.
The father's aabbccddee genotype means that he is homozygous recessive for every locus. The mother's aabbccddee genotype also means that she is homozygous recessive for every locus.The Punnett square, on the other hand, is used to determine the potential genotypes of the children.When two parents are homozygous for the recessive allele, their offspring is also homozygous for the recessive allele. In this case, it means that all of their children will inherit two copies of the recessive allele at each locus.
Therefore, all of their children will have aabbccddee genotype.
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Where does competition for reproduction most likely occur?
Answers
Human blood consist of blood groups A, B, & O. However, there is one more blood group, AB, which contains alleles A and B in the same genotype. What is this phenomenon called?
Answers
Answer:
codominant inheritance
Explanation:
edge
help pls. i’ll give u brainliest fr
Answers
Answer: Covalent Bond
Explanation:
When carbon atoms bond with each other, it makes a covalent bond.
A student wants to see if using a cell phone before going to bed affects how long it takes to fall asleep. Thestudent set up an experiment with three groups of students: Group A, Group B, and Group C. Group A did not
use a cell phone before bed. Group B used a cell phone only to listen to music. Group C used a cell phone to view social media before bed. All the students in the groups were 15 years old. All the students in the groups
were scheduled to go to bed at the same time (10:00pm). All students in the groups ate dinner at the same
time, and ate the same kind of food.
• Identify IV and DV in the experiment
o IV:
o DV:
• Identify at least two constants in this experiment:
o Constants:
• What is the control group in this experiment?
o Control:
Answers
Answer:
Group B and C were control group
and The music and social media was the constants
Answer:
a CELL phone well because you might be on it all night
How can understanding renewable and
nonrenewable resources a affect me
as a high school student or teenager?
Answers
Answer:
understanding witch is witch can help you save money and also help save the environment. Renewable energy sources such as wind turbines can create energy from the wind and use it to power houses and buildings. Nonrenewable energy sources are basically a one time use like ethanol or gas we use for cars, once they are used up they are gone or unusable.
6. which of the following components of the neuromuscular junction would be directly affected by the toxin produced by bacterium clostridium tetani? a. the axon terminals b. the motor end plate c. the sarcoplasmic reticulum d. the synaptic cleft
Answers
Motor end plate of the neuromuscular junction would be directly affected by the toxin produced by bacterium clostridium tetani.
Clostridium tetani is a soil bacterium. It is a major causative agent for tetanus. It enters the body through wounds or necrosis. Bacteria that reside in muscles release neurotoxin called tetanospasmin. It enters the axon of the motor neuron and moves retrogressively and reaches the inhibitory neuron where it enters into the axon bulb and prevents the release of neurotransmitters called gamma amino butyric acid and glycine. Hence the inhibitory neuron cannot pass signals to the motor neuron which causes more muscle contraction since signal from the inhibitory neuron reduces muscle contraction.
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An experiment was conducted to demonstrate the passage of glucose and starch across a selectively permeable membrane that allows monomers but not polymers to diffuse through.
Glucose and starch powders were mixed in 10 ml of water and poured into a cellulose bag, which was then sealed at both ends and placed in a beaker of water. After 30 minutes, the presence of glucose in the beaker was recorded with a testing paper, which turns green if glucose is present. The presence of starch was recorded by adding a few drops of iodine, which causes the solution to turn violet if starch is present.
Answers
B. because if you read the first paragraph, the membrane will only allow monomers not polymers. glucose is a monomer and starch is a polymer. so the membrane will only take glucose and the color for glucose therefore the color is only green.
Why does starch not cross a membrane yet glucose does?The synthetic partially permeable membrane cannot pass through starch because the molecules are too big to pass through the dialysis tubing's pores.Contrarily, water, iodine, and glucose molecules are too tiny to cross the barrier.
Is starch a porous substance or a solid?Since it would have interacted with iodine in the liquid outside of the hemodialysis tubing if the starch had been porous, it was impermeable.
2.
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If a transport protein moves two solutes across a membrane in the same directions, the protein is a type of co-transporter called a(n):_______
Answers
Cotransporter is a type of protein which can transport protein moves two solutes across a membrane in the same directions.
What is cotransporter?A cotransporter is a type of carrier protein that allows the movement of two different species from one side of the membrane to the other at the same time and in the same direction. Cotransporters are the class of membrane transport proteins that are responsible for the accumulation of nutrients, neurotransmitters, osmolytes and ions in the cells from microorganism such as bacteria to human.
So we can conclude that Cotransporter is a type of protein which can transport protein moves two solutes across a membrane in the same directions.
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Indica que nivel de organización representa cada uno de los siguientes elementos ADN estómago neurona electrón átomo de oxígeno, agua, ser humano, músculo cardíaco, óvulo y sangre.
Answers
Answer:
Neuron- the level of organisation is cells.Because it s the functioning unit of nervous system.
The Blood's level of organisation is tissues because if is made of group of cells.
The stomach level of organisation is organ, because it is made up of group of cells and tissues to form part of the digestive system.
Heart muscles is made up of organs as it is the combination of tissues and cells therefore a muscular organ,
DNA -represents a molecular level,but because it is located in the cells , its represented this level.
Egg belongs to level of organisation which is cellular.
Oxygen atom level of organisation is.(cell)
water is a Compound.( tissues )since it is the combination of two atom cells( hydrogen and Oxygen)
Human being is organism.
electron level of organisations are the smallest particles.(cells)
Explanation:
The attraction that causes water and other liquids to form drops on thin
films is called______.
This is also water's ability to be attraction
to other water molecules.
A.)cohesion
B.)adhesion
C.)capillary action
D.)surface tension
Answers
Answer:
Cohesion is an attraction between substances of the same kind. Because of cohesion, water and other liquids form thin films and drops. Molecules at the surface of water are linked together by hydrogen bonds like a crowd of people linked by holding hands.
The attraction that causes water and other liquids to form drops on thin films is called cohesion.
Thus, option A is correct.
What is cohesion?
Cohesion is defined as attraction of molecules for other molecules of the same type and molecule of water have strong force of cohesion.
Cohesion is a property of same molecules of the same substance that stick to each other due to mutual attraction.The attraction that causes water and other liquids to form drops on thin films is called cohesion.
The properties of matter include a character that can be measured, such as object's color, mass, density, melting point, odor and temperature.Cohesion is defined as attraction of molecules for other molecules of the same type and molecule of water have strong force of cohesion.
Solid have high cohesive properties so they do not stick to the surface in which they come in contact.The properties of matter include a character that can be measured, such as object's color, mass, density, melting point, odor and temperature.
Therefore,the attraction that causes water and other liquids to form drops on thin films is called cohesion.
Thus, option A is correct.
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Why aren't viruses alive?
Answers
On average, newborn infants sleep approximately ___________ hours a day.
a. 8
b. 6
c. 16
d. 24
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suppose in an experiment conducted to test a new drug,40 people were given the drug and 40 people a placebo. what is the control of the experiment?
Answers
The differenece between the control group and the experimental one, is that the first one does not receive the treatment, while the second one does. In this example, the Control group are the 40 people that received the placebo.
What are the control and experimental groups?
An experiment must have at least a control and an experimental group.
The control group is used to identify if, under the same environmental conditions, there are factors other than the treatment itself affecting the results of the study.
The experimental group is the one that receives the experimental procedure (in this case, the new drug) with changes in the independent variable.
The control group must be selected from the same population as the experimental group.
Data from an experimental group are compared with the data from a control group.
These two groups are identical in all aspects except for the independent variable that the researcher changes in the experimental group to observe how they affect the individuals.
In the exposed example,
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what is tRNA involved in? replication, transcription, or translation.
Answers
tRNA matches amino acids
what role do trees play in the forest
Answers
Answer:
Trees play the part of taking in the carbon dioxide that we breathe out and changing it into oxygen so we can breathe it, they alos provide homes for different types of animals.
Hope this helps!
Select all of the characteristics of organelles:-surrounded by membranes-only found in animal cells-studded with membrane proteins-all types contain the same set of enzymes-contain distinct proteins
Answers
The correct characteristics of organelles are: Surrounded by membranes, studded with membrane proteins, and containing distinct proteins. These features are unique to organelles in cells. In addition, they are found in both animal and plant cells, and their different types contain different sets of enzymes.
Organelles are surrounded by membranes, which allow for the transport of specific molecules in and out of the organelles.
Membrane proteins are found on the surface of organelles, and they play important roles in transporting molecules across the membrane.
Organelles contain distinct proteins, which are necessary for their specialized functions. For example, mitochondria contain proteins that are involved in energy production, while lysosomes contain enzymes that break down waste products.
Overall, organelles are essential components of eukaryotic cells, providing specialized functions that allow cells to carry out complex processes. They are surrounded by membranes, studded with membrane proteins, and contain distinct proteins that are essential for their specialized functions.
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A Pharmacokinetic-Pharmacodynamic Model of Tamoxifen and Endoxifen to Predict Their Distribution and Effects on Inhibition of Tumor Growth
Answers
The objective of this work was to create a pharmacokinetic-pharmacodynamic model to quantitatively predict the distribution of tamoxifen and endoxifen as well as to identify the anti-tumor effect patterns of these drugs.
What is Tumor growth ?A mass of tissue that develops abnormally when cells do not die on schedule or expand and divide more often than they should. Cancer-free tumours might be benign or malignant (cancer). Although benign tumours can become enormous, they do not penetrate or spread to surrounding tissues or to other areas of the body.
But as a tumour expands, more blood is required to supply the cancer cells with oxygen and other nutrients. Thus, a tumour receives instructions from cancer cells to grow new blood vessels. It is known as angiogenesis.Learn more about Tumor growth here:
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Can someone help me
Answers
Answer:
Deoxyribonucleic Acid Or DNA
Explanation:
RNA is single stranded