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Red blood cells in seawater would shrivel up because there is more salt concentration than human blood cells can handle.
Sorry I can't answer for 3 but the thyroid gland is the main organ for hormones so it definitely has something to do with that
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scientists and their contributions to the models of atom
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The primary researchers and intellectuals engaged in inventing the atomic model we know today include Democritus, John Dalton, J.J. Thomson, and Ernest Rutherford. There were many scientists whose discoveries contributed to the atomic model. The nuclear model of Rutherford. With his famous gold-foil experiment, which showed that the atom contains a tiny, heavy nucleus, Rutherford overturned Thomson's hypothesis in 1911.
JJ Thomson's original investigation into cathode rays, which led to the discovery of the electron, was the most brilliant accomplishment of his life. It was revealed during his evening talk to the Royal Institution. The electrons orbit the atom's nucleus in specified, legal routes, according to the Bohr model, also referred to as a planetary model. When the electron is in one of these orbits, its energy is constant.
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the rate of decay for carbon-14 is -0.693 b and its the half-life is 5,730 years. if an organism has 45% of its carbon-14 compared to the living sample. how old is the fossil?
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If the organism has 45% of its carbon-14 compared to the living sample then the fossil is 6555 years old.
Given that,
ln [tex]N_{t}[/tex]= ln N₀ − λt
= ln ([tex]N_{t}[/tex] / N₀) = − λt
We can the value of λ using the expression,
λ = 0.693 / [tex]t_{1/2}[/tex]
= 0.693 / 5730
= 1.209 × 10⁻⁴ a⁻¹
Putting in the numbers we get,
ln (45 / 100) = 1.209 × 10⁻⁴ a⁻¹ × t = -0.7985
t = 0.7985 / (1.209 × 10⁻⁴)
t= 6555 years
Hence the sample is 6555 years old.
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Why isn't there more information about the dangers of sugar?
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Answer:
Because the dangers are affecting your body slowly and people realize it many time later
Explanation:
The ______ functional division of the nervous system transmits information from the viscera to the central nervous system.
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The visceral sensory division functional division of the nervous system transmits information from the viscera to the central nervous system.
The visceral (or autonomic) motor system controls involuntary functions mediated by the activity of smooth muscle fibers, cardiac muscle fibers, and glands.
The nervous system that regulates the visceral system is carried out by the autonomic nervous system whose neuron cell bodies are in the sympathetic and parasympathetic ganglia and innervate smooth muscle, cardiac muscle, and glands. This visceral motor system is regulated by a feedback system via the dorsal ganglia of the spinal cord and sensory ganglia of the cranial nerves which make local reflex connections in the spinal cord and brainstem.
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Changes in ________ structure and function have been demonstrated in adolescents who are either at-risk or have been diagnosed with various mood and/or anxiety disorders.
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Changes in amygdala structure and function have been demonstrated in adolescents who are either at-risk or have been diagnosed with various mood and/or anxiety disorders.
What does amygdala
The amygdala is the part in the anatomy of the brain that is associated with the processes of emotion, behavior, and memory.
This part of the brain is shaped like an almond. The amygdala is located deep in the temporal lobe, the part of the cerebral cortex in the middle of the brain.
In this central area of the brain, the amygdala is next to the hippocampus, the part of the brain associated with memory formation.
Along with the hippocampus, the amygdala is part of the limbic system.
The limbic system itself is a structure in the brain involved in behavioral and emotional responses.
In addition to the hippocampus and amygdala, the limbic system also consists of the thalamus, hypothalamus, and basal ganglia.
Structure and function of the amygdala
The amygdala is located on two sides of the brain, namely the right and left brain.
The right side is involved with negative emotions, while the left is associated with negative and positive emotions.
Each hemisphere of the amygdala has three parts. Each part is connected to other brain structures that have different functions. the three parts, namely:
- The medial (middle) subnucleus group associated with the olfactory bulb and cortex (related to olfactory function or the sense of smell).
- The basolateral group (bottom and sideways) is connected to some of the cerebral cortex, especially the frontal lobes.
- Groups of middle and anterior (front) nuclei that connect with the brainstem, hypothalamus, and sensory structures.
The connection between the amygdala and these brain structures links cognitive functions (thinking, learning, and remembering) with physiological functions of the body (such as breathing, heartbeat, touch, or smell).
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what is the definition of phenotype? multiple choice an alternative form of a gene that determines a particular characteristic in an individual a gene or group of genes that determine a specific characteristic in an individual a characteristic of an individual that can be observed or measured a sequence of dna that encodes a functional product such as an enzyme
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The term "phenotype" describes a person's observable characteristics, such as height, eye colour, and blood type. Both a person's genomic make-up (genotype) and environmental circumstances affect their phenotype.
Each gene in a diploid organism carries two alleles, one from each parent. The phenotype of an organism is determined by interactions between alleles. An organism is homozygous for a characteristic if it inherits two copies of the same allele for that trait. One phenotype for a particular characteristic is expressed in homozygous individuals.
The genotype is an organism's genetic make-up, whereas the phenotype is its outward appearance.
Gene alleles are referred to as one's genotype, and the trait that is manifested as a result of those alleles is referred to as the phenotype.
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Q1 ) Briefly explain how exchange of gases take place in humans.
Q2) Using a venn diagram, compare and contrast between Aerobic Respiration and Anaerobic Respiration
Q3) Paheli participated in a 400m race competition held at her school and won the race. When she came home she had mixed feelings of joy and pain as she had cramps in her leg muscles. After a massage, She was relieved of the pain. Answer the following questions related to the situation.
a) What can be the possible reason for the pain in her legs?
b) Why did she feel comfortable after a massage
Q4) Why does an athelete breathe faster and deeper than usual after finishing the race?
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3. (a) The buildup of lactic acid in her muscles may be the source of the pain in her legs.
(b) The massage relieved her because it increases blood circulation, which increases oxygen supply to the muscle cells and aids in the complete breakdown of lactic acid into CO and water.
4. The athlete's body requires extra oxygen as he runs in the race. So that the body may receive more oxygen, its breathing rate quickens.
What is breathing?
The act of breathing, also known as ventilation, involves moving air into and out of the lungs in order to facilitate gas exchange with the body's internal environment, primarily to expel carbon dioxide and draw in oxygen. These gases are moved to and from the cells by the circulatory system of the body, where "cellular respiration" occurs. Lactic acid is produced when muscle cells respire anaerobically during strenuous exercise, jogging, etc.
Hence, the buildup of lactic acid in her muscles may be the source of the pain in her legs, massage relieved her because it increases blood circulation, and an athlete's body requires extra oxygen as he runs in the race so he's breathing faster.
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please help analyze this
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Newton second law of motion state that force is needed to accelerates or decelerate a body
There is gravity on the international space station but astronauts appear to be weightless because both the space station and the astromouts are in free fall and gene Cernan was the first astromouts who worked on a task outside a spaceship and he said of the experience and said 'every time i had push or turn a valve and it would turn my entire body at zero gravity
Newton second law stated that force is needed to accelerates or decelerates a body and astromouts must learn how to push themselves carefully through their spacecraft or they will simply float around helplessly and an astronauts orbiting the earth does feel weightless because there is no ground or normal force to counteract the force of gravity
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Down's Syndrome is also called Trisomy 21 because affected people have three copies of chromosome 21. How is this possible?
a
In a mistake in mitosis, the fertilized egg has two copies of chromosome 21.
b
In a mistake in meiosis, the fertilized egg has two copies of chromosome 21.
c
Either the sperm cell or the egg cell has one copy of chromosome 21.
d
Either the sperm cell or the egg cell has two copies of chromosome 21.
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Answer: D.
Explanation: hope this helps!
when during the cell cycle are chromosomes visible under a microscope? multiple choice only when they are being copied only during interphase chromosomes are always visible only during the g1 phase
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Chromosomes are visible under a microscope during mitosis, more specifically when they're being copied.
During interphase, chromosomes are not really visible under a microscope. It's because they only exist in the form of loosely condensed chromatin fibers in this phase, making them hard to see.
Chromosomes only began to become visible during prophase, when centrioles start to move to the opposite poles of the cell. In this phase, chromatin is condensed, which makes individual chromosomes become visible. It will stay visible until the end of cell division but is most easily visualized during the metaphase (the phase that follows prophase).
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which statement about evolution is false? group of answer choices evolution is possible in the absence of natural selection. evolutionary change requires genetic change. individuals evolve. developmental change occurs within an individual.
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Answer:
evolution is possible in the absence of natural selection
Explanation:
Evolutionary processes depend on both changes in genetic variability and changes in allele frequencies over time. while Natural selection is the process through which populations of living organisms adapt and change. The common conception of evolution focuses on change due to natural selection.
In a family that carries an X-linked recessive trait, which outcome would be expected?
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X linked recessive trait in this condition will have equal chances of expressions in the conditions.Option A is correct.
What is a X linked recessive trait ?X linked recessive trait means that the mutated gene is present on the X chromosome.
Thus, The mutated gene present on the X chromosome will have equal chances that is 50% in sons and 50% in daughters.
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plants pollinated by the hummingbird do not receive pollen from plants pollinated by the bumble bee. this is an example of:
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Plants pollinated by the hummingbird do not receive pollen from plants pollinated by the bumble bee is an example of mechanical isolation.
Physical incompatibility between the reproductive systems of two species is referred to as mechanical isolation. Prezygotic barriers like mechanical isolation prevent fertilization, which prevents reproduction. Any physical barrier that precludes mating is considered mechanical isolation.
The separation between white sage and black sage is among the most known instances of mechanical isolation in plants. The two sage species can't interbreed because they depend on distinct pollinators, although having a similar geographic area.
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The atomic theory has changed as scientists discovered more information about atoms. Which of the following statements
follows the current understanding of atoms?
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The atomic theory has changed as scientists discovered more information about atoms statements follows the current understanding of atoms is there is the finite number of kind of atom that combine to make all matter of the universe
Chemistry is based on the modern atomic theory which stated that all matter is composed of atom and atom themselves are composed of protons and neutron and electron and each element has its own atomic number and which is equal to the number of proton in its nucleus and on the cosmic scale of the universe and assume that amount of matter created and uncreated cancel each other out and this mean that matter is finite so there are the same number of atom in the observable universe
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owen lovejoy hypothesized that: a. bipedalism meant less body surface to expose to the sun, resulting in a smaller body size. b. monogamy and food needs created the necessity for bipedalism. c. bipedalism arose in areas where the forest was disappearing. d. bipedalism arose as a result of a shift to hunting as a primary source of food.
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Owen Lovejoy hypothesized that monogamy as well as food needs created the necessity for bipedalism.
So, the correct option is B.
According to Lovejoy's idea, sexual dimorphism suggested that acquiring food would increase the newborn survival rate. While females guarded their young, men were in charge of providing for the females (Lovejoy, 1980). The significance of bipedalism in early human evolution. Males who could walk on two legs were able to carry more food than their quadrupedal counterparts, which made the knuckle-walkers appear much less attractive to females.
In this hypothesis, the upright men were just more effective wage earners. Bipedalism may have had at least four direct effects on the development of language and cognition, two of which were specifically related to the capacity to produce human speech sounds and two of which were generally connected to the development of increased brain size and cognition.
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the expenditure of energy to produce heat in response to a cold environment and as a result of overfeeding is called multiple choice heat metabolism. thermic effect of cold. thermic metabolism. adaptive thermogenesis.
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The expenditure of energy to produce heat in response to a cold environment and as a result of overfeeding is called adaptive thermogenesis.
Thermogenesis is generally defined as any metabolic process that releases heat occurs in specialized tissues including brown adipose tissue and skeletal muscle.
Thermoregulation is important for regulating the body temperature . In Daily life activities body maintains it temperature within the comfortable limits in response to change in temperature ,shelter, and climate. Hence, thermoregulation is only a very small part of daily energy expenditure.
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it is a common fallacy that reproduction most commonly results in the birth of new organisms. in fact, reproduction more commonly involves . select one: a. the production of new cells b. parthenogenesis c. asexually produced offspring d. cytokinesis
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Reproduction more commonly involves formation of new cells either by asexual or sexual method.
Reproduction is the process of formation of new offspring from parent either sexually or asexually. It involves formation of new cells from pre existing cells when they divide.It results in the formation of zygote. Zygote is single celled and divides to form an adult organism.
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which is true regarding niacin? question 15 options: it can be synthesized in the body from the amino acid tryptophan. eggs are a good source of preformed niacin. the niacin deficiency disease is beriberi. corn has a protective effect against niacin deficiencies.
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The correct statement about niacin is : It can be synthesized in the body from the amino acid tryptophan.
Niacin is a vitamin B that your body produces and uses to convert food into energy. Your skin, digestive system, and nervous system all benefit from it. Although niacin (vitamin B-3) is frequently included in daily multivitamins, most individuals obtain enough niacin through their diets.
The creation of energy from nutrients that produce energy requires niacin.
Supplemental niacin lowers LDL cholesterol while raising HDL cholesterol.
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What differences in structure would be necessary in order for each limb to accomplish its specific functions
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Cells must be specified and committed to make the limbs. For a limb to be formed, the specific muscle cells for the limbs should be formed. The limbs of different animals vary.
What is cell specification?Cell specification is a phenomenon in which the cell is committed to a certain function and can't change it. In the zygote stage, the cell is not committed to any particular function, but as the cells multiply, they begin to commit to a particular cell type. Cells such as the muscle cells of the limb should be specified and committed to the particular structure that is required for the limb. The minimum structures for the limb are structures to move, to make living place by digging the soil etc. so the limb should have nails, claws , digits etc.
Hence, because no specific animal limb is mentioned, cell specification and commitment are the result of the limb's specific structural features.
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some land mammals have common ancestors even though they themselves envolved on different continets. this is to what
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All living beings are in fact descendants of a completely unique ancestor typically referred to as the closing generic not unusual ancestor (LUCA) of all life on the planet, in accordance with fashionable evolutionary biology.
The common ancestor is an impact of speciation, wherein more than one species derive from a single ancestral populace.
Amniotes referred to as synapsids have been the ancestors of mammals. Synapsids named pelycosaurs had a number of the trends of mammals via 275 million years in the past. some synapsids evolved into therapsids, which have become massive at some point of the Permian length.
If two or more species percentage a unique physical characteristic, which includes a complex bone structure or a frame plan, they'll all have inherited this option from a commonplace ancestor. physical capabilities shared due to evolutionary history (a not unusual ancestor) are said to be homologous.
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in the real world, many factors determine the numbers of organisms in any one population. yet, a hypothetical species of fly with unlimited food and no mortality would show what type of growth?
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A hypothetical species of fly with unlimited food and no mortality would show biological exponential growth and will have a J-shaped graph.
The uncontrolled expansion of a population of organisms that occurs when resources in its habitat are limitless is referred to as biological exponential growth. For a population to continue to grow unhindered, resources must be readily available. As Charles Darwin discovered in formulating his theory of natural selection, each species should be able to completely realize its innate capacity to increase in number when resources in the environment are limitless.
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A student is examining an igneous rock. She notices that it has many crystals that are different colors
and can be seen without the aid of a hand lens. She identifies the rock as granite. Based on the
information, what can she conclude about the origin of therock?
A.) it’s an extrusive rock and cooled rapidly at the surface
B.) it’s an extrusive rock and cooled slowly at the rock
C.) it’s an intrusive rock and cooled rapidly below the surface
D.) it’s an intrusive rock and cooled slowly below the surface
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Based on the information, the student can conclude that granite is an intrusive igneous rock and cooled slowly below the surface.
What are igneous rocks?
One of the three primary rock types, along with sedimentary and metamorphic rocks, is igneous rock, also known as magmatic rock.The cooling and solidification of magma or lava results in the formation of igneous rock.The planet's crust or mantle may partially melt existing materials to produce the magma. A rise in temperature, a fall in pressure, or a change in composition are typically one or more of three processes that lead to melting. Extrusive rocks form on the surface or intrusive rocks form below the surface as a result of solidification into rock.Intrusive refers to igneous rocks that have solidified and cooled below the surface. Rocks that are intrusive to a pluton are also referred to be plutonic. A pluton is an intrusive rock body made of igneous material that has cooled within the crust. The cooling of magma inside the Earth happens gradually. Large crystals can form because of slow cooling, which is why intrusive igneous rocks can be seen to include crystals. Most intrusive igneous rocks are made of granite.
Hence, granite is an intrusive rock and cooled slowly below the surface
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the transfer of genetic information from dna to rna is called group of answer choices initiation. transcription. translation. elongation.
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The transfer of genetic material from DNA to RNA is called transcription.
DNA contains functional units called genes which are the genetic material that gets transcribed from DNA to RNA. Transcription proceeds in three steps- initiation, elongation and termination.
It is done by the formation of messenger RNA or mRNA with the help of RNA polymerase in the nucleus of eukaryotic cells. The DNA strand that participates in transcription is called the template strand, while the strand that does not participate is called the coding strand.
Transcription is done to make RNA so that it can later be used to make a polypeptide.
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if you made a change in the promoter sequence in the dna that inactivates the promoter, what would happen at the rna level? group of answer choices nothing, the rna would be made as usual. the mutation of the dna would be carried through to the rna sequence.
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If the Promoter in DNA is inactivated, then the gene's transcription (production of RNA) under the control of that inactivated Promoter will halt.
The Promoter is a DNA sequence upstream to a gene, and it regulates the production of RNA of the immediate gene (a process called transcription). In transcription, the enzyme RNA polymerase binds to a promoter and starts producing RNA. If Promoter is inactivated, then RNA polymerase will not be able to bind to it, leading to no RNA production.
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the orange coloring on the surface of the outcrop consists of iron oxide minerals and bacteria. the iron comes from the oxidation of in the coal. the water coming from the mine is .
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Mine drainage is the water exiting the mine. Water and rocks that contain minerals that include sulfur react chemically to generate it.
An underwater mine is what?In order to harm or destroy surface ships or submarines, self-contained explosive devices known as naval mines are submerged in the sea. Mines are positioned and allowed to wait, unlike depth charges, until they are activated by any vessel or a specific type of vessel approaching or coming into touch with them, similar to anti-infantry vs.
What causes a mine's corrosive water to flow out?Pyrite, an iron sulfide, combines with air and water to produce sulfuric acid and dissolved iron when it is exposed, which causes mine drainage. Red, orange, or yellow sediments can occur as some or all of this iron precipitates, forming the bottom of streams carrying mine drainage.
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defense of the body against a particular pathogen is provided by a) innate immunity. b) adaptive immunity. c) immunological surveillance. d) skin defenses.
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The body's natural defenses against all disease types are known as innate immunity.
The innate, or nonspecific, immune system is one of vertebrates' two main immune defense systems, together with the adaptive immune system. Innate immunity is the oldest and most common immune response in plants, fungi, insects, and early multicellular animals in terms of evolutionary defense mechanisms (see Beyond vertebrates).
The following are some of the innate immune system's main responsibilities:
The complement cascade is activated to identify bacteria, excite cells, and promote clearance of antibody complexes or dead cells by producing chemical factors, such as chemical mediators referred to as cytokines.The adaptive immune system is triggered by antigen presentation and functions to identify and destroy foreign compounds in organs, tissues, blood, and lymph.To know more about natural defenses
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you have a problem with ants in your garden. initially, you use an over the counter insecticide to kill them off. the next time, however, the insecticide does not work as effectively. what process best explains this result?
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Which of the following describes the photic zone of the open ocean?
ANSWER IF YOU'RE 100 PERCENT SURE!!!
THIS IS FOR A TEST
A. The part of the ocean that CANNOT support photosynthesis
B. The darkest part of the ocean, where NO light can penetrate
C. The shallowest part of the ocean where there is enough light to support plant life.
Answers
Answer:
C is the answer of ur question
How are the genes involved in the production of proteins?
Answers
Answer:
Genes carry genetic material called RNA which are used for protein synthesis
Answer:
Genes contain Codes from DNA .
Explanation:
They are two way in which genes can code for a Protein . A DNA in the nucleus (translation or transcription these are two process to send genes according to the needed ) with help of mRNA to the ribosomes and tRNA gather the specific amino acids for the specific protein .
All these can happen because genes contain the necessary codes for a specific protein .
Categorize the given minerals into metallic and non-metallic minerals?
• Iron,gold,quartz,calcite,petrolium,copper,aluminium,diamon
d,emerald,rubies,topaz,coal,sapphires.
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Iron, Gold, Aluminum, Sapphires and Copper are the metallic minerals while Quartz, Calcite, Diamond, Rubies, Emerald, Topaz, Coal and Petroleum are the non-metallic minerals.
What are minerals?Mineral is a chemical compound which is normally crystalline in nature. It is a solid substance present in nature made up of one or more and elements which are combined together.
It is formed as a result of geological processes . For example it includes quartz, calcite, sulphur, clay minerals etc. Minerals are used in the production of ceramics oftenly.
Properties of minerals :
1. They have characteristic chemical composition
2. They have highly ordered atomic structures
3. They have several physical properties such as hardness, luster and cleavage.
Thus, Iron, Gold, Aluminum, Sapphires and Copper are the metallic minerals while Quartz, Calcite, Diamond, Rubies, Emerald, Topaz, Coal and Petroleum are the non-metallic minerals.
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