The major features defining characteristics of arthropods include:
Complex mouthpartsChitinJointed appendagesSegmented bodiesWhat are arthropods?Arthropods can be considered a special and broad taxonomic group of invertebrates animals that have an exoskeleton formed generally by a protein called chitin. In addition, arthropods are also characterized to have segmented bodies that may correspond to identical segments that may be different along their bodies.
Therefore, we can conclude that arthropods are animals that do not have an internal skeleton but instead an external exoskeleton mainly composed of chitin and also exhibit segments that may be repeated along their bodies.
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1. The diagram compares diffusion of sugar
molecules and osmosis. Explain the
difference between osmosis and diffusion in
cells.
Sugar
molecules
Lipid bilayer
(cell membrane)
Outside c
Inside cell
The difference between Osmosis and Diffusion is: -
Osmosis- Plants can able to take in water from the soil via osmosis. Water seeps into the plant's roots because they have a higher concentration of solutes than the soil around them. Osmosis also affects guard cells in plants. These are cells which open and close on the leaf's underside to permit gas exchange via plasma membrane.
Diffusion- A substance diffuses when it moves from the a region of high concentration to one with a lower concentration. When particles in gases and liquids randomly collide and disperse, diffusion takes place. For living things, diffusion is a crucial mechanism because it governs how molecules enter and exit cells.
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Glycolysis occurs in all living cells. Which row correctly identifies the cell
structure involved and the products of glycolysis respectively?
A. mitochondria: 36ATP, CO₂, H₂O
B. cytoplasm: 2ATP, pyruvate, NADH
C. mitochondria: 2ATP, pyruvate, NADH
D. cytoplasm: 36ATP, CO₂, H₂O
Glycolysis occurs in all living cells. The location and products of glycolysis in the cell are: (B) cytoplasm: 2ATP, pyruvate, NADH.
Glycolysis is also called the EMP pathway. It is common to all the organisms either aerobic or anaerobic. This occurs in the cytoplasm of the cell. The process does not require oxygen and is a composed 10 steps of chemical reactions that ultimately form 2 molecules of pyruvate.
NADH is a coenzyme that participates in the various process of metabolism. It stands for Nicotinamide Adenine Dinucleotide (NAD) + Hydrogen (H). Its key role is to synthesize energy for the body.
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the site where a motor neuron excites a skeletal muscle fiber is called the neuromuscular junction. this activity will test your understanding of the sequence of events that occur at the neuromuscular junction.
The correct order of occurrence from left to right of the events that occur at the neuromuscular junction after the action potential reaches the axon terminal is as follows:
Ca²⁺ enters the axon terminal.Synaptic vesicles release ACh.ACh binds to ACh receptors.Ligand-gated cation channels open.Na+ enters and K⁺ exits.Membrane potential is less negativeWhat is the neuromuscular junction?The neuromuscular junction is described as a synaptic connection between the terminal end of a motor nerve and a muscle. It is the site for the transmission of action potential from the nerve to the muscle.
The neuromuscular junction has three basic components which include
presynaptic motor nerve terminal, synaptic space (synaptic cleft), and the postsynaptic surface of the skeletal muscle fiber.Learn more about the neuromuscular junction at: https://brainly.com/question/5865840
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This is the full question:
The site where a motor neuron excites a skeletal muscle fiber is called the neuromuscular junction. This activity will test your understanding of the sequence of events that occur at the neuromuscular junction.
Using the images for help, place in the correct order of occurrence from left to right the events that occur at the neuromuscular junction after the action potential reaches the axon terminal.
Which statement explains how fertilizers impact an ecosystem
Answer: Fertilizers kill off important nitrogen fixing bacteria.
Explanation: uhope that helped you didnt put the statements "Which statement explains how fertilizers impact an ecosystem"
Salivary amylase is an enzyme that begins breaking down carbohydrates while the food is still in the mouth. Once the food passes into the stomach, what happens to the salivary amylase?.
Answer:Saliva contains special enzymes that help digest the starches in your food. An enzyme called amylase breaks down starches (complex carbohydrates)
Explanation:
How did later
scientists adjust Hutton's law
of uniformitarianism?
Answer:
What impact did Hutton's findings have on other scientists?
Hutton urged additional research into Earth's past among other scientists. What is one technique to study the history of Earth? to establish how rock structures and strata were produced.
Explanation:
i hope that helps!!
Mark is diagnosed with the following symptoms hypertension, high pulse rate, fever, diaphoresis, dry mouth, nausea tingling of both hands, short of breath and chest feeling tight. which possible conditions might he be suffering from?
Mark could possibly be suffering from Ischemic Heart Disease.
What is Hypertension?A persistent medical disease called hypertension, often known as high blood pressure, causes the condition in which the blood to be greater than it should be. The heart must work harder than usual to pump more blood through all the blood arteries in this situation.
Based upon what the heart is doing, the pressure within the arteries varies. The pressure rises as the heart pumps blood through the arteries by contracting. The pressure drops when the heart unwinds. Systolic blood pressure is the maximum pressure recorded during a blood pressure reading. Diastolic blood pressure is the lowest pressure.
Two numbers are used to represent blood pressure. For instance, the human's systolic blood pressure in the image to the right was 158. They had a 99 systolic blood pressure reading.
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if rnase were heated to twice its tm in the absence of β-mercaptoethanol and then cooled to 4 °c, it would be in what state? choose one: a. random coil b. native state c. partially unfolded intermediate d. denatured
The correct answer [b] native state
Proteins are denatured by excessive heat. RNase will refold, though, because the disulfide links are still intact. Most proteins can't accomplish this.
What do you mean by protein?Large biomolecules and macromolecules known as proteins are made up of one or more extended chains of amino acid residues. Among many tasks that proteins carry out in living things include catalyzing metabolic processes, replicating DNA, reacting to stimuli, giving cells and organisms structure, and moving molecules from one place to another. The primary way that the proteins differ from one another is in the order of their amino acids, which is determined by the nucleotide sequence of their genes and typically causes a protein to fold into the certain 3D structure that controls its activity.
A polypeptide is an ordered sequence of amino acid residues. At least one lengthy polypeptide is present in every protein. Less than 20–30 residue polypeptides are frequently referred to as peptides and are rarely thought of as proteins. Peptide bonds and nearby amino acid residues hold the individual amino acid residues together. The sequence of a gene, which is encoded in the genetic code, determines the arrangement of amino acid residues in a protein.
The genetic code typically only defines the 20 conventional amino acids, but in some organisms, it may also include selenocysteine and—in some archaea—pyrrolysine. The residues in a protein are frequently chemically altered by post-translational modification shortly after or even during synthesis, which modifies the physical and chemical characteristics, folding, stability, activity, and ultimately the function of the proteins. Non-peptide groups, often known as cofactors or prosthetic groups, are sometimes added to proteins. Additionally, proteins can cooperate to carry out certain tasks, and they frequently join forces to create stable protein complexes.
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The process occurring at the sensory receptors that converts physical energy into coded neural activity that the nervous system can process is called __________. a. thermoreceptor processing b. cerebral cortex control c. sensory transduction d. accessory restructuring please select the best answer from the choices provided a b c d
The process occurring at the sensory receptors that convert physical energy into coded neural activity that the nervous system can process is called c. sensory transduction
In the field of science, we can define sensory transduction as a process by which a change in the physical environment is recognized by the sensory receptors. This information is changed into electrical signals that are transported along the neurons. The neurons transmit these action potentials to the CNS which interprets it and sends signals for producing a response through the effector neurons.
The sensory receptors detect any kind of environmental change and the physical energy of the neurons changes into a neural activity that is initiated by the nervous system in recognition of this change by the sensory receptors.
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What is Riccia?
Ty... ಠ∀ಠ
Riccia is a bryophyte.
Riccia is a genus of liverworts within the order Marchantiales. these vegetation are small and thalloid, that isn't always differentiated into root, stem and leaf.
Riccia is a bryophyte. Bryophytes have sporophytes which increase on the gametophyte.it's far formed after syngamy and is dependent on the gametophyte for vitamins. A based sporophyte is a function characteristic of bryophytes
The genus Riccia (liverworts) are small thalloid flora that aren't differentiated into roots, stems and leaves. they're dichotomously branched and shape rosettes. they're typically monoecious and their sexual organs are antheridia and archegonia. Asexual replica is by the mode of spores.
Riccia, genus of liverworts (small, creeping flowers) in the order Marchantiales, widely distributed all through the world.
Riccia fluitans is the most effective really aquatic liverwort in Florida. plants were accrued from scattered locales inside the northern, central, and southern areas. not like most different liverworts, it floats freely in tangled clumps or mats below the water floor.
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BIOLOGY!!
THE JOURNEY OF A FOOD PARTICLE THROUGH THE CELL
If glucose is the sole energy source for cellular respiration in an animal, what proportion of the carbon dioxide exhaled is derived from oxidation of pyruvate to acetyl coa?.
The proportion of the carbon dioxide exhaled derived from the oxidation of pyruvate to acetyl CoA is 1/3.
Pyruvate is produced by glycolysis in the cytoplasm and its oxidation takes place in the mitochondrial matrix before chemical reactions begin, pyruvate enters the mitochondrion crossing the inner membrane and arriving at the matrix.
Pyruvate + NAD⁺ + CoA-SH ⇒ acetyl-CoA + NADH + CO₂
This is the reaction of the conversion of pyruvate into acetyl CoA.
1 molecule of pyruvate is converted into 1 molecule of carbon dioxide.
Also, 2 molecules of pyruvate are converted into 2 molecules of carbon dioxide (as glucose on glycolysis yields 2 molecules of pyruvate).
Acetyl-CoA also contributes to the citric acid cycle and generates two molecules of CO₂.
Pyruvate thus generates a total of 3 molecules of CO₂, whereas glucose generates 6 molecules of CO₂ (as glucose on glycolysis yields 2 molecules of pyruvate)
Thus, Fraction = 2/6 = 1/3.
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Describe the pathway taken by these molecules of carbon dioxide from the muscle cells to the blood
Explanation:
The blood can transport carbon dioxide in three different ways. Plasma proteins or haemoglobin hold it in place, it is dissolved directly in the blood, or it can be converted into bicarbonate.
Carbon dioxide is primarily transported by the bicarbonate system. The carbon dioxide diffuses into the red blood cells. Inside, carbonic anhydrase converts carbon dioxide into carbonic acid (H2CO3), which is subsequently hydrolyzed into bicarbonate (HCO−3) and H+. The H+ ion binds to haemoglobin in red blood cells, and bicarbonate is transported out of the red blood cells in exchange for a chloride ion. It is called the chloride shift.
The bicarbonate leaves the red blood cells and enters the blood plasma. The lungs transport bicarbonate back into the red blood cells in exchange for chloride. The H+ dissociates from haemoglobin and combines with bicarbonate to form carbonic acid with the help of carbonic anhydrase, which then catalyzes the reaction to turn carbonic acid back into water and carbon dioxide. As a result, carbon dioxide is expelled from the lungs.
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Atoms transfer from the non-living portions of our environment to the living parts of our environment through the _____.
A. air cycle
B. food chain
C. rock cycle
D. phosphorous cycle
At the end of the electron transport chain, where is the light energy that was absorbed and converted by chlorophyll stored?.
At the end of the electron transport chain, the light energy is stored in ATP and NADPH molecules.
What are the steps of the electron transport chain reaction?In Photosystem II, chlorophyll is used to store radiant energy.
The energy level of the electrons provided by the water molecules increases when the pigment molecules absorb light.
The excited electrons travel from Photosystem II to Photosystem I at a lower energy level via the electron transport chain.
New electrons are taken out of the water molecules to replace the excited electrons as they leave photosystem II.
The photosystem I electrons are transferred to another electron acceptor by the absorption of light energy, where they are then transported back and used to create NADPH molecules.
As electrons leave Photosystem I, new electrons from Photosystem II enter to take their place.
Hydrogen ions are still present in the thylakoid lumen after the water molecule disintegrates, and the ATP synthase pumps them to the stroma.
ATP molecules are made using the energy that has been released.
Hydrogen ions go back from the stroma to the thylakoid compartment.
Therefore, at the end of the electron transport chain, the light energy is stored in ATP and NADPH molecules.
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______ are formed in stars’ cores as a result of fusion.
Ultraviolet waves
Radio waves
Gamma rays
Infrared waves
Gamma rays are formed in stars’ cores as a result of fusion.
Gamma rays are produced during the breakdown of radioactive atomic nuclei and the decay of particular subatomic particles. Gamma rays are also produced via the procedure of pair annihilation, where an electron and its antiparticle, a positron, disappear and two photons are created. Inside the star's core gamma rays are produced through the following steps:
Two protons in the Sun fuse. The pair breaks apart again frequently, but occasionally one of the protons changes into a neutron through the weak nuclear force. With the conversion into a neutron, a positron and neutrino are formed, which results in proton-neutron pair known as deuterium.A third proton crashes with the composed deuterium. This collision influences the construction of a helium-3 nucleus and a gamma ray. These gamma rays emit out from the core of the Sun and are released.Two helium-3 nuclei collide, creating a helium-4 nucleus plus two extra protons that exit as two hydrogens.To learn more about gamma ray here
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Answer the Question Below...
Are lungs hollow?
A population of mice in a meadow is growing in a pattern of logistic growth. Arrange these events in the order in which they occur, with the first event on top and the last event on the bottom. Not all of the events will be used.
The population increases exponentially.
The population fluctuates near the carrying capacity.
The rate of population increase begins to slow down.
Answer:
1. The population increases exponentially
2. The rate of population increase begins to slow down
3. The population fluctuates near the carrying capacity
Explanation:
The population usually fluctuates exponentially but as the population grows beyond the carrying capacity, the population starts settiling.
the scapula and the clavicle generally move as a unit, and their only bony link to the axial skeleton is provided by the clavicle’s articulation with the .
the scapula and the clavicle generally move as a unit, and their only bony link to the axial skeleton is provided by the clavicle’s articulation with the sternum.
All of the limb bones as well as the bones that connect each limb to the axial skeleton are part of the appendicular skeleton. The pectoral girdle is made up of the bones that connect each upper limb to the axial skeleton (shoulder girdle). The scapula and clavicle are the two bones that make up this. On the front of the shoulder, on the S-shaped collarbone, is the clavicle. It is connected to the sternum of the thoracic cage, a component of the axial skeleton, near its medial end. Just above the shoulder joint, the clavicle's lateral end articulates (joins) with the scapula.
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A Name the following:
1. The vein that carries oxygenated blood.
2. A lymphatic organ.
3. The protein produced by certain white blood cells in response to a foreign substance.
4. The contraction phase of the heart.
5. Iron pigment present in erythrocytes.
Answer:
1.pulmonary veins. 2.spleen...
3.antibody 4.systole. 5.haem
Explanation: 1. Veins generally has the role carrying deoxygeneted blood but in our body we have one vein that carries oxygeneted blood ,the important fact to remember is veins take blood into the body .So the vein that carry oxygeneted blood will also carry blood into the heart from lungs and the opening of heart is the left auricle.
2. Spleen is the lymphatic organ close to armpit which helps in defence to body and produces lymph
3.antibody - antibodies are produced by cells of WBC against foreign entity called antigen.
4.systole- the stage of contracted heart is systole and relaxed heart is diastole.
5.heam - the answer is haem because haem means iron and iron imparts redness to blood plasma ,and with globin it form haemoglobin.
Using the table on the right as a guide, answer the following questions about light-independent reactions.
Describe the process of light-independent reactions.
What are the products of light-independent reactions?
A table entitled light-dependent reactions is shown. The requirements are light, energy and water. The site is the thylakoid membrane. The process is light energy splits water and excites electrons in chlorophyll. A T P and N A D P H are produced. The products are A T P, N A D P H, and oxygen.
The products of light-independent reactions include the following:
GlucoseNADP+Water (H₂O).What is photosynthesis?Photosynthesis can be defined as a biological and chemical process through which living organisms such as green plants (autotrophs) convert light energy (sunlight) received from the Sun into chemical energy, in order to enable them make their food.
The stages of photosynthesis.In Science, there are (2) main reactions that make up the process of photosynthesis and these include following:
Light-dependent reactions.Light-independent reactions.What are light independent reactions?Light independent reactions can be defined as a type of photosynthetic reaction that occurs in the stroma of the chloroplasts and it requires the following necessary inputs:
Carbon dioxideAdenosine triphosphate (ATP)NADPHAdditionally, NADPH, adenosine triphosphate (ATP), and oxygen are the outputs (end products) of photosynthesis.
In this context, we can reasonably infer and logically deduce that glucose, water (H₂O), and NADP+ constitute the products of every light independent reactions.
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What is metabolism ?
Ty :))
Answer:
Metabolism is how your body processes food, sugar, and everything you know. The higher your metabolism, the skinnier you are.
Explanation:
Hope this helps!
What is the best describes the graphs
The statement that best describes the graph is that the variables have a direct relationship. That is option B.
What is direct relationship of variables?Variables are said to be in a direct relationship when the increase of one variable leads to the increase of the other or when the decrease of one variable leads to the decrease of the other.
For example, the relationship between volume and temperature is a direct relationship because of the following reasons:
The graph is a straight line graph,The graph intercepts at the origin (0,0)Therefore, the graph shows a direct proportional relationship between the volume and the temperature.
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Which of these battles marked the beginning of the American Revolution?
Battle of Bunker Hill
Battles of Lexington and Concord
Battle of Quebec
Siege of Boston
Answer: The Battles of Lexington and Concord
Explanation: The Battles of Lexington and Concord on 19 April 1775, the famous 'shot heard 'round the world', marked the start of the American War of Independence
I'm learning it yesterday LOL
Answer: Battles of Lexington and Concord
Explanation:I did this quiz if you don’t believe here is the proof
Lightning strikes are unpredictable because
Lightening is so unpredictable because of the fact that areas with a high potential for electric energy within a given thunderstorm that are necessary to generate lightening are continuously changing as the storm progresses. Therefore the path that a bolt of lightening will take is almost completely random.
2. Imagine that you arrived on the island before the tree
populations were extinct, but after the tree populations had
started to decline. Suggest a management plan that could have
helped the Easter Islanders save the tree populations from
extinction.
Answer:
Ecosystem collapse
Explanation:
Scientists have proven that the island was covered by forests until the 17th century. It's believed the trees were cut down by the ancestors of today's Easter Islanders in order to transport the giant stone statues - the Moai - as well as to build canoes, houses and fires to burn the dead.
Define the term Saccharomyces❕
Ty :))
Answer:
HOPE THIS HELPS
Explanation:
It is a genus of fungi that includes many species of yeasts. It is gotten from two Greek words. It is very important in food production. They are unicellular and sapo trophic fungi. Scientific name: Saccharomyces
Higher classification: Saccharomycetaceae
Division: Ascomycota
Kingdom: Fungi
Answer:
Any of a genus (Saccharomyces of the family Saccharomycetaceae) of usually unicellular yeasts (such as a brewer's yeast) that are distinguished by their sparse or absent mycelium and by their facility in reproducing asexually by budding.between each presynaptic and postsynaptic neuron is a that is the fluid-filled space between them. each presynaptic neuron releases that binds with receptors in the segment of a postsynaptic neuron.
Between each presynaptic and postsynaptic neuron is a Synaptic cleft that is the fluid-filled space between them. Each presynaptic neuron releases a Neurotransmitter that binds with receptors in the Postsynaptic segment of a postsynaptic neuron.
The gap between the pre-and postsynaptic cells, also known as the synaptic cleft or synaptic gap, is around 20 nm (0.02 ) broad. Rapid changes in neurotransmitter concentration are made possible by the cleft's tiny volume. The primary purpose of the synaptic cleft is to create a place for the chemical transfer of nervous system information. These signals can also be regulated thanks to the synaptic cleft.
A postsynaptic neuron sends signals away from the synapse, whereas a presynaptic neuron sends signals toward a synapse. The synapse, a juncture where the terminal part of the axon contacts another neuron, is where information is transmitted from one neuron to another.
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What is the importance of subscripts when writing a chemical equation? (3 points)
quizlet digeorge syndrome results in greatly decreased t cell numbers and function and is evidenced by abnormal development of facial features that are controlled by the same embryonic pouches; these include low-set ears, fish-shaped mouth, and other altered features.
Digeorge syndrome results in greatly decreased t cell numbers and function and is evidenced by abnormal development of facial features that are controlled by the same embryonic pouches; these include low-set ears, fish-shaped mouth, and other altered features.
What is digeorge syndrome?
Digeorge syndrome is a defective condition that appears at birth stage due to deficiency of the T-cells and it also indicates some serious lifelong problems including learning difficulties and heart defects in children.
This medical problem is mostly found in children who suffer from defects like defective immune system, low calcium levels in blood and also show some emotional and behavioral issues.
Moreover, the symptoms of abnormal facial features include hooded eyes, enlarges nose-tip and long face, a small groove in upper lip as well.
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The complete question is:
A 5-year-old male presents with low-set ears, a fish-shaped mouth, and involuntary rapid muscular contraction. Laboratory testing reveals decreased calcium levels. Which of the following diagnosis is most likely?
a. B-lymphocyte deficiency b. T-lymphocyte deficiency c. Combined immunologic deficiency d. Complement deficiency