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The oxidase test is another biochemical test used to distinguish aerobic versus anaerobic metabolism in microbes. Research the oxidase test and describe how it is performed. Include examples of oxidase-positive and oxidase-negative microbes in your answer.
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Oxidase test is a biochemical test that is used to identify organisms that produce the enzyme oxidase.
Oxidase test is used to distinguish aerobic from anaerobic metabolism in microbes.
Aerobic metabolism is the use of oxygen to generate energy from a food source while anaerobic metabolism is the generation of energy with the absence of oxygen.
The procedure of oxidase test includes:
Place a piece of filter paper in a clean petri dish and add 2 or 3 drops of freshly prepared oxidase reagent.Using a piece of stick or glass rod (not anoxidized wire loop), remove a colony of the test organism and smear it on the filter paper.Look for the development of a blue-purplecolour within a few seconds as shown in colourBlue purple colour signifies oxidase positive organisms which includes Pseudomonas aeruginosa
Colourless signifies oxidase negative organisms which includes Escherichia coli
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Match each of the following muscles with its correct description.
a. sternohyoid
b. hyoglossus
c. frontalis
d. mentalis
1. originates on the sternum and clavicle
2. classified as an infrahyoid muscle
3. consists of two bellies
4. elevates and protrudes lower lip
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B4
C1
D3
I think sorry if I get one wrong
in both mitosis and meiosis, sister chromatids separate during anaphase, but there are four haploid daughter cells in meiosis and two haploid daughter cells in mitosis
true or false and explain why
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Answer:
flase
Explanation:
because mitosis produce diploid cells and meiosis produce 4 haploid cells
Which stage of interphase do cells enter in order to stop dividing?
A. G2 phase
B. S phase
C. G1 phase
D. Go phase
Please help
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Answer:
Cells enter the G0 phase to stop dividing.
3. Identify the natural cycle that is shown in the diagram. Then, for each box in the diagram, write one or two sentences explaining the labeled process as it relates to this cycle.
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Answer:
the oxygen/carbondioxide cycle
Explanation:
decay creates carbon-dioxide, and plants does both cellular respiration and photosynthesis since plants are still alive. and there is oxygen and carbon-dioxide in rocks. basically the living mostly use cellular respiration and photosynthesis and non-living (the ocean and factory) produce oxygen and carbon-dioxide
Which part of cellular respiration involves using acetyl CoA to produce energy carriers? A. Glycolysis B. Pyruvate processing C. The electron transport chain O D. The Krebs cycle
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Answer: The Krebs cycle
Explanation:
What is the form of lipids, protein and carbohydrate that can be absorbed through small intestine?
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Is there a particular type of fiber that is found mostly in the mucous connective tissue???
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Explanation:
connective tissue. The fixed and transient cells found in connective tissue. ... Collagen fibers - most are type I collagen (most abundant protein in the body) ... It provides tensile strength in multiple directions. slide.
write paragraph about digestion of food in brief
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Answer:
Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream.
Explanation:
according to wikipedia!
Digestion is nothing but breaking down of substances into simpler forms, which the body can use. We eat many things and they have very complex compounds, our body cannot use these compounds. So, different parts of our digestive system breaks down different compounds to simpler forms, so that our body can use it for different functions.
plz explain in your own words
what are conjugated molecules????
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What is the meaning of reality???
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Answer:
life is nothing
Explanation:
i want to die
Answer:
reality means real real things or the real nature of things rather than imagined, invented,
Identify and describe the protist that was responsible for the Irish potato famine of the 1840s.
A.) brown algae
B.) water mold
C.) Protoza
D.) slime mold
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Answer:
B.) water mold
Explanation:
The water mold is a filamentous fungus like organisms that lives in brackish water, fresh water or wet soils. They are saprophytic, that is, they live on dead organisms. Their reproduction is usually by motile asexual spores (zoospores).The zoospores are of two types namely pear-shaped with apical flagella and kidney-shaped with two flagella on the concave side. Water mold are usually identified by their zoospores.
What are the characteristics of a healthy ecosystem? Why is biodiversity
important in a healthy ecosystem?
Plz help ^_^
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Answer:
A healthy ecosystem consists of native plant and animal populations interacting in balance with each other and nonliving things (for example, water and rocks). Healthy ecosystems have an energy source, usually the sun. The sun provides radiant energy for producer (plant) growth.
Explanation:
Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. ... A larger number of plant species means a greater variety of crops. Greater species diversity ensures natural sustainability for all life forms.
Trust me mark me as brainliest trust me
Select the correct answer.
How does the high specific heat of water help maintain the temperature of earth?
A By heating and cooling more slowly than land or air
B. By heating and cooling faster than land or air
с.
By heating faster but cooling more slowly than land or air
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The high specific heat of water help maintain the temperature of the Earth by heating and cooling more slowly than land or air. Thus, the correct option is A.
What is the specific heat of water?The specific heat of an object is the amount of heat which is required to increase or raise the temperature of unit mass of that particular substance through one degree celsius. Specific heat is represented by the symbol 'c'. Its unit in SI system is Joule /(kg °C) and in CGS is cal / (gm °C).
The high specific heat of water helps in regulating the rate at which air changes its temperature, which is why the temperature of the planet change between different seasons is gradual rather than sudden, especially the geographical locations near the ocean.
Therefore, the correct option is A.
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This organelle is considered the location for genetic material.
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Answer:
The nucleus contains most of the genetic material (DNA) of the cell. ... Also located in the nucleus is the nucleolus or nucleoli, organelles in which ribosomes are assembled.
This mountain slope towers over a town several hundred feet below. Which two weather events present the highest risk to the town
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A key difference between primary cell cultures and secondary cell lines is that:____.a. primary cell cultures tend to stay alive and divide longer than secondary cell lines. b. secondary cell lines are generally cancerously transformed and will divide indefintely. c. secondary cell lines grow slower than primary cell cultures.d. the cells in primary cell cultures do not divide.
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Answer:
d. the cells in primary cell cultures do not divide.
A key difference between primary cell cultures and secondary cell lines is that the cells in primary cell cultures do not divide.
hope it helped you
Explanation:
The main difference between primary and secondary cell culture is that the primary cell culture contains the cells directly obtained from host tissue, whereas the secondary cell culture contains sub-cultured cells from primary cell culture.
Count the number of breaths you take in a minute and compare it with the number of times a fish opens and closes its mouth
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Answer:
Don't know sorryyyyyyyyyyyyyyyyyyyyyyyyyyyyy
2. What does it mean for a species to have high biological fitness? Explain in terms of survival and reproduction
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Answer:
FITNESS IS THE ABILITY TO REPRODUCE FOR ANY ORGANISM
IF THEY CAN'T REPRODUCE THEY WON'T EXIST
Explanation:
All of the following are examples of the functions of connective tissues except
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Answer:
can you please show the options
Coffee trees grown in the shade of taller forest trees produce fewer coffee beans than trees grown on cleared forestland. However, unlike coffee grown in full sun, shade-grown coffee preserves some habitat for forest birds and other organisms. What is one advantage of growing coffee in the shade?
A. It harms the environment.
B. It provides farmers with greater profits.
C. It costs more than other growing methods.
D. It helps maintain forest biodiversity.
Answers
Answer:
d
Explanation:
provides animals with homes letting them breed
It helps maintain forest biodiversity. Therefore, option (D) is correct.
Why is coffee grown in shade?
One advantage of growing coffee in the shade is that it helps maintain forest biodiversity. By growing coffee trees in the shade of taller forest trees, farmers preserve some habitat for forest birds and other organisms, which can help to maintain the overall biodiversity of the forest ecosystem.
This is particularly important in regions where forests are being cleared for agricultural purposes, as it can help to mitigate the negative impact on the environment.
While shade-grown coffee may produce fewer coffee beans than trees grown on cleared forestland or in full sun, it provides important ecological benefits that are not captured by purely economic considerations
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Receptors trigger one of two effector pathways resulting in changes in neuronal activity. These changes will, ultimately, effect gene expression. Which effector pathway is characterized by ion flux through transmitter-activated channels resulting in an altered membrane potential and neuronal activity
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Complete question:
Receptors trigger one of two effector pathways resulting in changes in neuronal activity. These changes will, ultimately, effect gene expression. Which effector pathway is characterized by ion flux through transmitter-activated channels resulting in an altered membrane potential and neuronal activity?
A. Slow effector pathways
B. Modulated effector pathways
C. Rapid effector pathways
D. NMDA glutamate receptor pathways
Answer:
D. NMDA glutamate receptor pathways
Explanation:
The NMDA glutamatergic receptor is a cationic channel receptor modulated by a ligand that allows the transport of Na+, K+, and Ca2+. Under certain situations, it exhibits particular permeability to Ca2+. The receptor has different regions that are susceptible to modulation by endogenous and exogenous agents. The receptor can be found at most excitatory synapses, where it responds to the neurotransmitter glutamate. During synapsis, the presynaptic membrane releases L-glutamate, which is received by NMDA glutamatergic receptor. The receptor plays a regulatory role because activates signaling cascades that depend on calcium.
These receptors are involved in normal synaptic transmission, in a diverse physiological phenomenon, and might be responsible for neurodegenerative processes.
The NMDA glutamergic receptor is characterized by ion flux through transmitter-activated channels resulting in membrane potential.
What are transmitter-activated channels?Transmitter-activated channels are channels through cell membranes which are activated by binding of transmitters.
An example of a transmitter-activated channels is the NMDA glutamergic receptor.
The NMDA glutamergic receptor is a ligand-gated cationic channel that allows calcium, potassium and sodium ions through it.
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what are the three functions if cnidarians gastrovascular cavity?
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Answer:
Digestion, distribution of nutrients throughout the body, and it can serve as a hydrostatic skeleton.
Q.#23.Lymph nodes are soft, small, round- or bean-shaped structures. They usually cannot be seen
or easily felt. They are located in clusters in various parts of the body, such as the: Neck, Armpit, Groin
and Inside the center of the chest and abdomen. At times these areas used to be swollen up for few days and are
gone. Explain why these swollen experiences are important.
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Answer:
Lymph nodes swell to protect us from illness if they do not swell non fatal illnesses could spell out death
Explanation:
halamang ornamental na di namumulaklak
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[tex]{\large{————————————————————————}}[/tex]
Mga Halamang Ornamental na di namumulaklak;
OreganoBambooSan FransiscoPalmeraCactusAloe VeraFortune PlantSong of IndiaAnahawMga Halamang Ornamental na namumulaklak;
RoseGumamelaCamiaSantanMarigoldOrchidCalachuchi[tex]{\large{————————————————————————}}[/tex]
#Hope it helps⸙
✍Zenitsu2
Which of the following regulate stress response, mechanical lode, hormonal signals, and new bone deposits?
a. Mechanoreceptors
b. Osteoclasts
c. Osteoblasts
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Answer:
The correct answer is - a. Mechanoreceptors.
Explanation:
Mechanoreceptors are protein receptors that are responsible for chemical and hormonal signals, regulating the stress response, mechanical lode, and new bone deposits in osteocytes during bone remodeling.
Osteo blasts and osteoclasts are also play role in bone remodeling. The mechanoreceptor is s a sensory receptor that responds to mechanical pressure or distortion.
which among the following is not a part of pistil option a ovary option B stigama option c vein option d style
Answers
Answer:
c vein option
Explanation:
veins are parts of animals, not plants
What processes found at a divergent boundary will help form the following rocks?
Answers
Answer:
B
Explanation:
What is a divergent boundary:
In plate tectonics, a divergent boundary is a linear feature that exists between 2 tectonic plates moving away from each other.
They can produce rifts, which become rift valleys.
Divergent boundaries also form volcanic islands, which occur when the plates move apart to produce gaps that magma rises to fill.
Sedimentary rocks form due to deposition, and accumulation
Metamorphic rocks form in a transformation of existing rock to new rock in a process called metamorphism.
Igneous rocks form through the cooling and solidification of magma or lava.
When the filled gaps of magma cool off, it will produce igneous rocks.
A red blood cell has an intracellular concentration of 300 mOsM of nonpenetrating solute. What best describes a solution containing 100 mM NaCl and 150 mM urea relative to the red cell?
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The solution is hypertonic to a solution containing 100 mM NaCl and 150 mM urea relative to red blood cell.
The term "hypertonic" refers to a solution that has a higher concentration of solutes compared to another solution. In this case, the solution containing 100 mM NaCl and 150 mM urea has a higher concentration of solutes than the intracellular concentration of the red blood cell, which is 300 mOsM of nonpenetrating solute.
The concept of tonicity is important in understanding how solutions affect cells. When a solution is hypertonic to a cell, it means that there is a greater osmotic pressure outside the cell than inside. In this specific scenario, the hypertonic solution has a higher concentration of solutes (NaCl and urea) than the red blood cell's internal nonpenetrating solute concentration.
As a result, water molecules will tend to move from an area of lower solute concentration (inside the cell) to an area of higher solute concentration (outside the cell) in an attempt to equalize the concentration on both sides of the cell membrane. This movement of water out of the cell can lead to cell shrinkage or crenation, which occurs when the cell's volume decreases due to water loss.
In summary, the solution containing 100 mM NaCl and 150 mM urea is hypertonic to the red blood cell because it has a higher concentration of solutes than the cell's internal nonpenetrating solute concentration, leading to water movement out of the cell and potential cell shrinkage.
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What are the three outcomes of C3a and C3b?
Answers
Answer:
Complement
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The Complement System: Overview
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Major component of Innate Immune System
Consists of over 30 proteins, which participate in a tightly regulated cascade-like activation process.
Protects host from pathogenic microorganims, contributes to immune complex regulation & is an important link between the innate & adaptive immune systems.
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3 Major Outcomes of Complement Activation
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1. Stimulation of inflammatory reactions via release proinflammatory mediators, which induce chemotaxis of leukocytes (leading to microbe destruction) & inflammation
2. Opsonization of pathogens by depositing fragments of complement proteins on the pathogens, making them more susceptible to phagocytosis
3. Complement-Mediated Cytolysis, via formation of a Membrane Attack Complex, which can insert itself into bacterial membrane & cause osmotic lysis
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Alternative Pathway Steps
Lectin Pathway Activation
Classical Pathway Activation
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The Complement System: Overview
Major component of Innate Immune System
Consists of over 30 proteins, which participate in a tightly regulated cascade-like activation process.
Protects host from pathogenic microorganims, contributes to immune complex regulation & is an important link between the innate & adaptive immune systems.
3 Major Outcomes of Complement Activation
1. Stimulation of inflammatory reactions via release proinflammatory mediators, which induce chemotaxis of leukocytes (leading to microbe destruction) & inflammation
2. Opsonization of pathogens by depositing fragments of complement proteins on the pathogens, making them more susceptible to phagocytosis
3. Complement-Mediated Cytolysis, via formation of a Membrane Attack Complex, which can insert itself into bacterial membrane & cause osmotic lysis
Explanation:
i don't know if It helps you...parang Ang layo naman Ng sagot ko sa tanong mo