Answer:
In 1918, one of the deadliest pandemics in history took place, known as the Spanish flu. The flu infected almost 500 million individuals globally, that is, about 33 percent of the world's population. Due to the Spanish flu, the death of about 20 to 50 million people took place.
The general symptoms of the first wave of Spanish flu were fever, chills, and fatigue. However, during the second wave, the people started to die within hours after the development of the signs, due to the development of a fluid taking place within the lungs resulting in suffocation.
At the time of the Spanish flu pandemic, not much was known regarding the composition of the virus. The scientists at that time were not able to make a difference between a bacteria and a virus. This made it tough for scientists to determine the Spanish flu with the help of a microscope.
Oxygen-rich blood is transported from the lungs by the _____.
pulmonary vein
pulmonary artery
trachea
bronchi
Answer:
Pulmonary artery
Explanation:
Answer:
B. Pulmonary Artery
Explanation:
just cause i had to learn this
How does a hormone like ADH only know to have an effect on the cells of the kidney and nowhere else?
Answer:
Vasopressin or antidiuretic hormone (ADH) or arginine vasopressin (AVP) is a nonapeptide synthesized in the hypothalamus. Science has known it to play essential roles in the control of the body’s osmotic balance, blood pressure regulation, sodium homeostasis, and kidney functioning. Given its vital role in multiple functions, it is no surprise that ADH is of great clinical significance. ADH primarily affects the ability of the kidney to reabsorb water; when present, ADH induces expression of water transport proteins in the late distal tubule and collecting duct to increase water reabsorption. Several disease states arise when the body loses control of ADH secretion or responds to its presence.
Explanation:
who causes someone to have a bar head
Answer:
the barber
Explanation:
he cuts hair
What were the Himalayan Mountains formed by?
The gravity of the Sun pulling on Earth's crust
Erosion over time
A meteor hitting Asia
The movement of Earth's crust
Answer: The movement of the Earth's crust
Explanation:
The movement of the earth's crust is responsible for the formation of the Himalayas. The Himalayas ranges and the Tibetan plateau is formed by the result of the collision between the Indian plate and the Eurasian plate which started 50 million years ago.
This leads to the movement of the earth's crust which aimed to the formation of the mountains.
The movement of the plates lead to the movement of the earth's crust which lead to the formation of Himalayan mountain.
Intracellular transport, changes in cell shape, cell motility and animal locomotion depend on the microtubules, microfilaments, motor proteins and their accessory proteins. You should be able to explain how each of these four movement functionsabove are achieved by microtubules and microfilaments. Make sure you understand the role of the different motor proteins involved that are specific to microtubule movement vs. microfilament movement. Microtubules and microfilaments also have important roles in the cytoskeleton.
Answer:
Intracellular transport is taking place with the help of microfilaments and microtubules. The plays the role of a highway for motor proteins such as dynein, kinesin, and myosin, which acts as the car of this highway that helps in transport.
Motor proteins help in changing the ATP to ADP by binding to it and attach or detach to the other parts of the cytoskeleton for transporting the vesicles as these proteins move.
Kinesin and dynein both are microtubule motor proteins. Kinesin transports full vesicles away from the nucleus, Dynein transports empty vesicles back towards the nucleus and myosin is a microfilament motor protein that transports both vesicles along microfilament.
How do you test for carbohydrates, proteins, and lipids?
Answer:
benedicts solution
Explanation:
hope this helps
it will change colour
Hi there!
Explanation:
For carbohydrates,you add an iodine solution to it.If it contains starch,it will turn a blue+black colour.
For proteins,you add a bierut solution to the protein mixture you are testing.If it turns purple or has purple in between layers it has protein.
For lipids,you add a Sudan III solution to the mixture of lipids and shake the test tube.A red layer forms on top and shows fats and oils are present.
Hope this helps!
Question 14
2 pts
Which of the following reactions in a cell would result in a release of energy?
O Both B & D would result in a release of energy.
O B. The enzyme sucrase breaking down sucrose into fructose and glucose.
O A. Enzymes facilitating the bonding of amino acids together to form a polypeptide
O D. The breakdown of glucose in cellular respiration.
O C. The enzyme ATP synthase facilitating the bonding of the third phosphate group to ADP, resulting in
the formation of ATP.
Answer:
Both B & D would result in a release of energy.
Explanation:
hope it helps .
Which best describes fossil record
Answer:
The fossil record provides evidence of a common ancestor to many species. A fossil record provides the confirmation of the typical progenitor and its numerous species. A fossil is known as the remaining parts of a certain living life.
What are long term effects of global warming?
Answer:
Extreme warm weather, glacial melting, rising sea levels, Ocean Acidification,Animal Migration and Extinction of Species, The Increase of Health Issues and Costs.
Early scientists were conflicted about the mechanism by which cells were created, with some scientists holding the viewpoint that cells were spontaneously crystallized in what was known as free cell formation. Robert Remak discovered ways to fix and observe cell membranes in various stages of cell division. These findings led Rudolf Virchow to proclaim in 1855, Omnis cellula e cellula (every cell comes from another cell), thus completing the tenets of cell theory.
Answer: All cells come from preexisting cells.
Explanation:
The given paragraph is about cells develop from the preexisting cells. The doubling of the genetic material in the S-phase is the triggering mechanism for cell division. In the process of mitosis the genetic material get reduced. The daughter cells vary by the amount of genetic material they receive. This proves that the new cells form from the pre-existing cells.
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Which scenario is an example of a functional adaptation?
=>functional adaption is an adaption that helps an organism survive. So, the color and shape of a flounder allows it to camouflage itself among the sea floor to hide itself from predators. Flounders ability to camouflage protects them, so they can
survive. The correct answer is D. The color and shape of a flounder allows it to camouflage itself on the sea floor.
Which phrase best describes a scientist?
Explanation:
A process that includes the different ways that scientists find out about the natural world and try to explain what they have observed.
Answer:
:They are helpers of the world who find out about the natural world and try to explain what they have observed.
Explanation:
A pure substance where atoms of two or more elements are chemically bonded to one another?
Increase in tension by increasing the number of motor units that are stimulated is called _________. Increase in tension by increasing the number of motor units that are stimulated is called _________. muscle tone autorhythmicity hypertonia recruitment
Answer: Recruitment
Explanation:
A motor unit is made up of a motor neurone and all the muscle fibre it supplies nerve to.
Within a muscle, the muscle fibers are functionally organized as MOTOR UNITS within a muscle.
MOTOR RECRUITMENT causes an increase in muscle tension which occurs when there is an increased number of stimulated motor units.
During a muscle contraction, the weakest motor units are recruited to contract first,The more weight (resistance) you add to a muscle, the more motor units you will need to recruit in order to generate movement.Recruitment stops as soon as movement starts, result is a smooth, even muscle contraction. I hope this helps, thanks.
Oxygen-rich blood is transported from the lungs by the _____.
pulmonary vein
pulmonary artery
trachea
bronchi
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer: FROM THE PULMONARY VEIN
Explanation: oxygen poor blood from the right ventricle into the lungs, where the oxygen enters the bloodstream. The pulmonary veins bring oxygen rich blood to the left atrium.
Miles wants to write the equation for photosynthesis. The diagram below represents one of the molecules in the equation,
H
H-C-0-H
C-
0
H-O
0-H
H
0-H
H
0-H
Which chemical formula reflects the diagram?
6012H6C
6C12H60
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Answer:
The options to this question are incomplete, the complete options are:
A) 6O12H6C
B) 6C12H6O
C) O6H12C6
D) C6H12O6
The correct answer is D) C6H12O6
Explanation:
According to the question, Miles is trying to write down the chemical equation for Photosynthesis. Photosynthesis is a chemical reaction that cells of autotrophic organisms undergo in the presence of sunlight to produce their food. Photosynthesis, which occurs in the Chloroplast, involves the chemical reaction between Carbondioxide (CO2) and water (H2O) to produce a sugar called glucose (C6H12O6) and oxygen gas (O2).
The food is synthesized as glucose, which is a monosaccharide (simple carbohydrate) that cells absorb in order to synthesize energy (ATP).
The overall equation of photosynthesis is as follows:
C02 + H2O ---light---> C6H12O6 + 6O2
The diagram in the question, although incomplete, depicts the sugar (glucose) component of the equation. The correct chemical formula for this sugar is written as: C6H12O6
Explain what would happen if the heart had no intercalated discs
Answer:
Explanation:
if intercalated discs are not present in the cardiac muscles then they might not contract properly and thus blood would not be pumped efficiently to other organs
How are viruswa different from bacteria ?
Answer: a .viruses are not alive .
Answer:
Viruses are tinier than bacteria. In fact, the largest virus is smaller than the smallest bacterium. All viruses have is a protein coat and a core of genetic material, either RNA or DNA. Unlike bacteria, viruses can't survive without a host.
So life itself is an emergent, complex state, but it is made from the same fundamental, physical building blocks that constitute a virus. Approached from this perspective, viruses, though not fully alive, may be thought of as being more than inert matter: they verge on life.
Explanation:
Research findings suggest that symptoms of schizophrenia are more likely to be present when the individual has a genetic predisposition to schizophrenia and also experiences a stressful environmental event. These findings are consistent with a model of _______________________. Group of answer choices probandwise concordance gene-environment interaction reactive genotype-environment correlation active genotype-environment correlation
Answer: gene-environment interaction
Explanation:
Schizophrenia is a disorder associated with the psychology and mental make up of the person. The person interprets the reality abnormally. This is associated with hallucination, disordered behavior and delusions.
The gene and the environmental interaction both play an important role in development of this disorder. The environment factors like stress can be dominant over the gene expression. If a person has genes for development of schizophrenia along with the stressed environment then the chances of development of schizophrenia will be prominent.
Quando é necessária a análise dos efeitos de substâncias, naturais ou artificiais sobre animais ou vegetais, aquáticos ou terrestres que compõem a biosfera estamos nos referente a
Resposta:
Ecotoxicologia
Explicação:
A ecotoxicologia é o estudo das interações que os seres vivos possuem não só entre si, mas também com o ambiente em que esses seres vivem.
Estudos de ecotoxicologia buscam compreender os diferentes tipos de reações causadas por substâncias químicas, bioquímicas e os processos biológicos que podem ocasionar essas reações, considerando a sensibilidade que diferentes organismos possuem a essas substâncias e os potenciais toxicológicos delas.
_________8. Which of the following is probably evolved first?
A. The kreb’s cycle C. Oxidation of pyruvate
B. Electron transport chain D. Glycolysis
Answer:
I think D) Glycolysis
Explanation:
Glycolysis is the first pathway used in the breakdown of glucose to extract energy. It takes place in the cytoplasm of both prokaryotic and eukaryotic cells. It was probably one of the earliest metabolic pathways to evolve since it is used by nearly all of the organisms on earth.
crees que la esclavitud atenta contra la diversidad cultural y el multiculturalismo
Answer:
Sí, creo que la esclavitud amenaza la diversidad cultural y el multiculturalismo porque la esclavitud proviene de la opresión y la pérdida de la identidad. También implica verse obligado a abrazar otras ideologías mientras relega a un segundo plano las propias creencias personales, lo que resulta en una falta de multiculturalismo.
Explanation:
La esclavitud es la inhumanidad del hombre hacia el hombre. Despoja al esclavo de su sentido de existencia y sistema de creencias. Esta opresión, que a menudo es física, mental y psicológica, hace que el individuo pierda autoestima e identidad. En un entorno que debería promover la diversidad cultural cuando conviven personas de diversas razas y culturas, existe una conformación a una forma de vida que dificulta el desarrollo del multiculturalismo. Aunque esto puede ser resistido inicialmente, las horas extra de estos descendientes pierden su identidad.
Select all that apply. Plant organs include: ° chloroplasts ° roots ° mitochondria ° stems ° leaves
Answer:
leaves,stems,roots
Explanation:
Answer: leaves stems roots
Explanation:
Decide if the following sentences are true or false. You have to correct the false ones.
a) There are four kinds of coal depending on their carbon content.
b) Coal is usually found in liquid state.
c) Fossil fuels are the result of the descomposition of plants and animals from the past.
d) Petroleum is the cheapest source of energy.
Answer:
b) is false coal is usually found in solid state.
Explanation:
What is the definition of self-definition?
Answer:
Self definition is being able to know who you are and what your purpose is in life. An example of self definition is when you know you are a strong, capable, confident teacher and husband.
Answer:
self-definition- a person's essential being that distinguishes them from others, especially considered as the object of introspection or reflexive action.
The dawn of the realization that biology was about information storage coincided with the
dawn of information-based computers. In 1943, Erwin Schrödinger was the first scientist to
suggest genes contain a code, just as a computer program is based on numerical code. Still
so few scientists believed DNA was the molecule encoding for hereditary information. Why?
Answer:
Scientists believed DNA was the molecule encoding for hereditary information due to the presence of makeup material inside in it.
Explanation:
The Hershey–Chase experiments which was conducted in 1952 indicate that DNA contains genetic material which has all the information about the makeup of living organism. DNA molecule has all information of making proteins and produces proteins which are necessary for the normal functioning of body of living organism. DNA molecule is just like a recipe book which contains all information of making protein.
Which does a reference point provide?
a position from which to measure future distance
a set of standard units for measuring displacement
a standard method for evaluating variables
a method for determining the speed of an object
Answer:
A position from which to measure future distance a way to detect an object motion.
A reference point provides a position from which to measure future distance.
A reference point is a location or point in space that serves as a criterion that is used to determine an object in motion. When an object moves in relation to a reference point, it is said to be in motion.
Therefore, we can conclude that a reference point is also used to determine a position from which we can draw a line to measure a future distance.
Learn more about reference points here:
https://brainly.com/question/2037494
To determine whether regulation of gene expression by short RNAs was a naturally occurring phenomenon, researchers isolated RNA from a cell and fractionated them by size to obtain only short RNAs. The next step was to clone these molecules.
Today the cloning step would not be required. Which of the techniques below is the best reason why?
A. Because a microarray could tell if the fragments were encoded by the genome.
B. Because a PCR reaction could tell if the fragments were encoded by the genome.
C. Because an RNA-seq reaction could tell if the fragments were encoded by the genome.
D. Because a yeast 2 hybrid could tell if the fragments were encoded by the genome.
E. Because a GFP fusion could tell if the fragments were encoded by the genome.
Answer:
C. Because an RNA-seq reaction could tell if the fragments were encoded by the genome.
Explanation:
The combination of single-cell RNA sequencing (RNA-Seq) and bioinformatic tools to assemble and annotate sequence reads is currently the most common methodology used to obtain complete transcriptomes from individual cells. RNA-seq is a Next-Generation Sequencing (NGS) technology that enables the analysis of the entire transcriptome, thereby this method can be used to examine gene, allelic and ncRNA expression. In the last years, RNA-seq has become the gold standard technique for direct analysis of ncRNA expression profiles in biological samples and clinical research.
New triglycerides (fatty molecules) are constantly synthesized and stored and others are
hydrolyzed and released into circulation mostly from cells in
a. blood
b. fibrous connective tissue.
c. adipose tissue.
d. reticular tissue.
e. transitional tissue.
Answer: Option C.
Adipose tissues.
Explanation:
New glycerides are can either go to the liver once or circulation or stored in adipose tissue.
Adipose tissues are connective cells that consist of adipocytes or fat cells which store energy inform of fat and also release it into circulation. It serves as insulation to the body.
Adipose tissue stores fat gotten from food and from liver metabolism. They store fat as energy source and under energy stress, they release it into circulation.
Se efectúa un experimento en el que a la planta 1 se le suministra CO2 normal pero agua que contiene átomos de oxígeno radiactivos. A la planta 2 se le suministra agua normal pero CO2 que contiene átomos radiactivos de oxígeno. Se permite que ambas plantas efectúen fotosíntesis y se mide la radiactividad del oxígeno gaseoso y los azúcares producidos. Qué planta esperarías que produzca azúcares radiactivos y cuál oxígeno radiactivo, por qué?
Answer:
The Oxygen liberated in photosynthesis comes from photolysis of water.
The CHO formed from Calvin Cycle during photosynthesis comes from reduction of CO2 with H+ of photolysis of water.
Therefore,since Plant 1 contains labeled Oxygen(from water) it will give radioactive Oxygen as the byproduct of its photosynthesis. It CHO is normal.
However,Plant 2, will contain radioactive CHO,because its radioactive CO2 will be reduced by H+ from photolysis of water to form radioactive labeled carbohydrate(CHO)
Explanation:
