Answer:
Common cold is a viral disease that spreads easily through air and affect the healthy person.
Explanation:
Common cold spreads by more than 200 virus species include rhinovirus,picornavirus etc. that affects the respiratory tract in the human body. This virus is dangerous because it can easily spreads through air and contact with the affected person like shaking hand or by touching any object .The virus may alive for a long period of time that is more than 18 hourThus this is difficult to control and is prevented by routine hand wash and to keep distance from the affected person so that it can't contaminate through the affected person.Great thanks in a light-year told you about the distance to stars or galaxies are away from each other Thomas disagrees as he thinks it is about the mount of time you would take to travel between two places in the galaxy explain what you think their ideas about light years
Answer:year lights
Explanation:
A light-year measures the distance light travels in one Earth year, which is about 9.5 trillion kilometers. Grace is correct in her definition, while Thomas is incorrect, as a light-year is not a measure of travel time but rather of distance.
Grace's understanding of a light-year being a measure of distance between two stars or galaxies is correct. A light-year is indeed the distance that light travels in a vacuum in one Earth year. Since light travels at about 300,000 kilometers per second, a light-year equates to approximately 9.5 trillion kilometers. This measurement is used by astronomers to express astronomical distances that are beyond the scale of our Solar System, making it a crucial concept in understanding the vastness of space.
On the other hand, Thomas is mistaken. A light-year is not a measure of the time it would take a human to travel between two places in the galaxy; rather, it's a measure of how far light can travel in a year. When we look at a star that is, say, 4 light-years away, we are seeing it as it was 4 years ago because that's how long it has taken the light to reach us.
which tissues in plants is similar in function to the circulatory system in humans ?
what is the independent variable mean
Final answer:
The independent variable is what the researcher manipulates in an experiment to see its effect on the dependent variable, which is the outcome being measured.
Explanation:
The independent variable is the factor in an experimental study that is manipulated or controlled by the researcher. Its purpose is to determine if it causes any change in the dependent variable, which is the factor being measured or observed. While conducting an experiment, the researcher changes the independent variable in a controlled way and then observes any changes that occur in the dependent variable as a result. A key aspect of a well-designed study is ensuring that the independent variable is the only significant factor altered between the experimental and control groups so that any observed effects can be attributed to it.
Examples
For instance, if scientists are studying the effect of different fertilizers on plant growth, the type of fertilizer is the independent variable because it's what the scientist changes. The growth of the plants, measured perhaps in height or biomass, is the dependent variable because it's what is being affected and measured.
Which description best explains the role of DNA in the differentiation of the cells within an organism?
Answer:
Each cell has the same DNA, so DNA does not play a role in differentiation.
Explanation:
All the parts of a person's body has same DNA and same genes. It is the function of RNA to carry genetic code from DNA and function protein synthesis. Although the different cells and tissue have different proteins their DNA is same. The genetic instructions carried by the DNA is RNA and RNA allows cell to create amino acid which is used in gene synthesis, expression and regulation.Lisa is investigating a chemical reaction involving carbon compounds. Which of these results could NOT occur, according to scientific laws
about chemical reactions, matter, and energy?
A
The reaction releases energy to the environment.
B. The reaction absorbs energy from the environment.
O
C
. The mass of carbon in the products is greater than the mass of carbon in the reactants.
D. The mass of carbon in the products is equal to the mass of carbon in the reactants.
E. The reaction occurs faster in the presence of a certain protein.
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Answer:
C
. The mass of carbon in the products is greater than the mass of carbon in the reactants.
Explanation:
i did it
The result that could NOT occur according to the law of conservation of matter is the mass of carbon in the products being greater than the mass of carbon in the reactants. Option C is correct.
Lisa is investigating a chemical reaction involving carbon compounds. According to scientific laws about chemical reactions, matter, and energy, the result that could NOT occur is: The mass of carbon in the products is greater than the mass of carbon in the reactants.
This violates the law of conservation of matter, which states that there is no detectable change in the total amount of matter during a chemical change. The other options (A, B, D, and E) are all possible outcomes of chemical reactions. Reactions can release or absorb energy, and the presence of a catalyst such as a protein can indeed increase the rate of a reaction without changing the amount of matter.
Hence, C. is the correct option.
Describe an activity to demonstrate phototropism
Is this correct pls check now itself
Yes, the given activity is a correct example which describes phototropism
Phototropism is an adaptation or a survival mechanism undertaken by some plants to receive maximum sunlight in order to prepare more food and energy through photosynthesis.
Explanation:
Phototropism takes place through receptor proteins called phototropins which act as blue light photoreceptors.
Phototropic activity:
Phototropism can best be observed by planting few plants including phototropic plants in pots and keeping them near the window to receive sunlight.
The natural bending of phototropic plants towards the window denotes their inclination towards sunlight.
The growth of sunflower plants facing towards the sun and blooming of lotus flower under sunlight are all examples of phototropism.
Other plants which are phototropic are Phalaenopsis, azuki beans, fungus of Phycomyces species, etc.
what is the complimentary strand to AGG-CTA_AAC
Answer: The complementary strand is TCC- GAT - TTG
Explanation: During DNA replication, each strand of the DNA serves as a template for the synthesis of a new strand, thereby producing two new DNA molecules, each with one new strand and one old strand. A template is a DNA strand that would allow nucleotide molecules to be lined up in a specific order and be joined to create another DNA with a unique sequence. This results in creation of a double stranded DNA in which each strand is complementary to the other. In nucleotide base pairing, Guanine pairs with Cytosine while Thymine pairs with Adenine.
G = C while T = A.
You look for shells when you visit the beach. However, if you're hiking in the mountains and you find shells by accident, you know that
Answer:
B the mountain was once under sea
Explanation:
Kareem drew a diagram to compare flatworms and segmented worms. Which label belongs in the area marked X? Can reproduce sexually Are always parasites Are all sessile Are covered in setae
Answer:
C. are all sessile
Explanation:
Answer:
the actual answer is A
Explanation:
Which label belongs in the area marked x?
Answer: the answer is A. iron
Explanation:
The label that belongs in the area marked X is the mitochondria.
Explanation:Label for Area X:The label that belongs in the area marked X is the mitochondria.
Mitochondria are organelles found in eukaryotic cells. They are responsible for producing energy in the form of ATP through cellular respiration. The main role of mitochondria is to generate ATP, which is required for various cellular processes.
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disorders of the blood forming organs is called
Answer: They are called Hematologic diseases which includes; rare genetic disorder, anemia,HIV,Sickle cell diseases
Explanation:
What is the phenotype ratio for this cross ?
Answer: 1 homozygous tall, 2 heterozygous tall, 1 homozygous short.
Explanation: If T is the tall trait and t is the short trait.
Answer: The phenotype ratio is 3:1
Explanation: If T represents tall trait and is dominant over t which is the recessive trait, there are 1 homozygous tall (TT), 2 heterozygous tall (Tt) and 1 homozygous short (tt) offsprings. All homozygous tall and heterozygous tall offsprings will appear outwardly as tall while the homozygous short offspring will appear outwardly as short. Therefore the phenotype ratio is 3:1
A parent cell gives rise to daughter cells with identical genetic information. Which of the following data supports the idea that heritable information is passed from a parent cell to a daughter cell through the process of mitosis??
A child has brown eyes; one of its biological parents has green eyes, and the other has brown eyes.
A feline skeletal muscle cell undergoes cell division, resulting in two feline skeletal muscle cells.
A human sperm fuses with a human egg cell, resulting in the development of a new human.
A long-stemmed plant reproduces with a short-stemmed plant, and the offspring are all long-stemmed.
Answer:
A feline skeletal muscle cell undergoes cell division, resulting in two feline skeletal muscle cells.
Explanation:
We are looking for a parent cell that gives rise to daughter cells with identical genetic information.
In simpler words, we are looking for something that makes 'clones' of itself.
In this statement (second option), the parent and daughters are all feline skeletal muscle cells.
A feline skeletal muscle cell undergoes cell division, resulting in two feline skeletal muscle cells.
Other incorrect choices: (All having to do with reproduction).
A child has brown eyes; one of its biological parents has green eyes, and the other has brown eyes.
This situation has two parents, each with a different trait. The child takes one of the parent's trait. The parents did not make a 'clone' of themselves.
A human sperm fuses with a human egg cell, resulting in the development of a new human.
The parents don't make 'clones' of themselves. The sperm did not make more sperm. The egg did not make more egg cells.
A long-stemmed plant reproduces with a short-stemmed plant, and the offspring are all long-stemmed.
The offspring plant only took the trait from one of it's parents. Also, whole plants are not individual cells.
Final answer:
The evidence that a feline skeletal muscle cell divides and produces two genetically identical daughter cells supports the idea that mitosis is the process through which heritable information is passed from parent to daughter cells.
Explanation:
The scenario that best supports the idea that heritable information is passed from a parent cell to a daughter cell through the process of mitosis is the example where a feline skeletal muscle cell undergoes cell division, resulting in two feline skeletal muscle cells. During mitosis, a single cell divides to produce two identical daughter cells, each with an identical set of chromosomes. This cell division ensures that the genetic information in the parent cell is accurately duplicated and passed on to each daughter cell, maintaining genetic consistency in the types of cells produced. This is how heritable information is preserved during growth and tissue repair in multicellular organisms.
4. The skull and spinal column are parts of the (1 point)
O appendicular skeleton.
axial skeleton.
O flat bone group.
O peripheral skeleton.
Answer: appendicular skeleton
Explanation:
The skull and spinal column are parts of the axial skeleton, which forms the central axis of the body and protects the brain, spinal cord, heart, and lungs.
Explanation:The skull and spinal column are parts of the axial skeleton. The axial skeleton forms the central axis of the body, and consists of the bones of the skull, vertebral column (spinal column), and thoracic cage. It serves to protect the brain, spinal cord, heart, and lungs. This is opposed to the appendicular skeleton, which includes all bones of the upper and lower limbs, plus the bones that attach each limb to the axial skeleton.
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The division of the nervous system that includes the
brain is the
Select one:
a. somatic nervous system
b. peripheral nervous system
C. central nervous system
d. autonomic nervous system
Answer:
C. central nervous system
Explanation:
It includes the brain.
The brain is part of the central nervous system, which also includes the spinal cord. This system controls most of the body and mind functions. The somatic, peripheral, and autonomic nervous systems are separate divisions of the nervous system.
Explanation:The division of the nervous system that includes the brain is the central nervous system (Option C). The central nervous system is one of the major divisions of the nervous system and it comprises the brain and the spinal cord. This system plays a crucial role in controlling most functions of the body and mind. In contrast, the somatic, peripheral, and autonomic nervous systems encompass other components and areas of the nervous system, but do not include the brain.
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An INHIBITORY signal is sent between neurons when __________ rushes into the neuron.
A. Na+
B. K+
C. Cl-
D. Ca-
An INHIBITORY Signal is sent between neurons when (A)Na+ rushes into the neuron.
Explanation:
When one spot of membrane supports an action potential, lots of \text {Na}^+Na+start text, N, a, end text, start superscript, plus, end superscript ions hurry into the cell by that spot. These ions radiated out sideways into the cell and can depolarize a nearby spot of membrane, stimulating the hole of voltage-gated sodium channels and causing the nearby spot to support its action potential.The action potential can only move in one direction – from the cell body towards the axon terminal – because a spot of membrane that has just experienced one action potential is in a “refractory period” and cannot withstand another.An INHIBITORY signal is sent between neurons when Cl- rushes into the neuron.
Explanation:
Inhibitory signal essentially pushes or slows the neuron’s brakes and inhibits the threshold to trigger an action potential.
Inhibitory signal occurs at synaptic membranes of neurons when neurotransmitters like GABA are released at the inhibitory synapses triggers an inhibitory postsynaptic potential. The neurotransmitter binds with Cl- ions and rushes the cl- ions into the neurons and hyperpolarizes the synaptic membrane. This will inhibit the neuron’s threshold to trigger an action potential.
I really need help!
A solar flare is observed on Earth
A) immediately.
B) approximately eight years after it happens on the Sun.
C) approximately eight hours after it happens on the Sun.
D) approximately eight minutes after it happens on the Sun.
The answer is D. Because it takes light 8 mins to reach the Earth from the sun.
Answer:
Your answer is option D - approximately eight minutes after it happens on the sun.
Explanation:
You can give Brainliest to the first person that answered they wrote more down
why is dna the molecule of inheritance
Answer:
What Is DNA's Role in Inheritance? DNA is the genetic information used to make proteins, and it contains the hereditary traits of organisms. There are two types of DNA: mitochondrial DNA, which you can only get from your mother, and nuclear DNA, which is a combination of both your ancestors' DNA.
DNA is the molecule of inheritance because it contains the genetic information passed from parent to offspring. Its structure allows for replication and transmission of this information. DNA is composed of four nucleotides that can be combined in different sequences to encode instructions for living organisms.
Explanation:DNA is the molecule of inheritance because it contains the genetic information that is passed from parent to offspring. The structure of DNA allows for the replication and transmission of this genetic information. DNA is composed of four nucleotides: adenine (A), thymine (T), cytosine (C), and guanine (G). These nucleotides can be combined in different sequences to encode the instructions for the building and functioning of living organisms.
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Bob adds heat to a liquid substance. When enough heat is added, A. its particles move farther apart and the substance becomes a gas. B. its particles move farther apart and the substance becomes a solid. C. its particles move closer together and the substance becomes a solid. D. its particles move closer together and the substance becomes a gas.\
A.
its particles move farther apart and the substance becomes a gas.
Answer: Its particles move farther apart and the substance becomes a liquid.
Explanation: When enough heat is added to a solid substance, it melts, changing from a solid to a liquid. When this happens, its particles move farther apart and the substance becomes a liquid.
What kind of pollution might cause whales and dolphins to strand on beaches?
Marine pollution is the cause for dolphins and whales to strand on beaches.
Explanation:
Marine pollution is caused by the combination of chemicals and trash, industrial and residential waste, plastic waste, etc that are washed away from land sources into the ocean which causes harmful effects to the health of marine living organisms.Frequently dolphins and whales strands on the beaches because of the plastic wastes that are consumed by whales and in case of dolphins some plastic stuck up in their nose which blocks to them breath freely thereby resulting to death.These organisms die because of pollution and changes in the direction tides push these dead animals to shore.Gametes are haploid, while somatic cells are diploid. What is the difference between a haploid cell and a diploid cell
Answer: Haploid cells have 23 chromosomes while diploid cells have 46 (23 pairs) chromosomes
Explanation: Haploid cells are produced in a type of cell division called meiosis. In meiosis, parent cells undergo two cell divisions to produce four daughter cells with half the number of chromosomes in the parent cell. Diploid cells are produced by a type of cell division known as mitosis. In mitosis, parent cells undergo one cell division to produce two identical daughter cells that have the same number of chromosomes as the parent cell. Gametes undergo meiosis while somatic cells undergo mitosis.
A maglev train uses powerful magnets to lift the train above the tracks as it moves forward. Such a design reduces what following force.
A rolling friction
B gravity
C air resistance
D fluid friction
A. Rolling Friction
Explanation:
Maglev is train transportation that uses magnets. Maglev will have two sets of magnets, the function of the first set of the magnet is to repel and push the train and lift the train from the track and the function of the second set of the magnet is to elevate the train further. In this process, the lack of friction is the main advantage.Guideway is the magnetic coil running along the track and it repelling the big magnets present on the undercarriage of the train. This repulsion causes the train to go up by 1 to 10 centimetres above from the guideway. All the maglev trains are floating on the magnetic cushion and it reduces the rolling friction.Answer:
They use magnets
Explanation:
A man has blood type O, Rh negative. These are both recessive traits. He is married to a woman who has blood type A, Rh positive. These are both dominant traits. Blood type and Rh factor are not linked genes. This couple has 3 children, two type A, Rh positive and one type A, Rh negative. What is the mother's most likely genotype? A) IAIARR B) IAIARr C) IAIORr D) IAIArr
Mother genotype is IAi (hetero-zygous) as the mother is a dominant trait.
Steps to find Mother's genotype:Man is Rh negative and O type blood group its genotype is OrOr
Mother is A positive so her genotype would be either IAIA or IAi
Also A blood group is dominant over O blood group.
It is given:
two children are A POSITIVE
One child is A negative
So the mother must have been hetero-zygous with genotype IAi as one of children would received it from mother as it is a dominant trait.
Punnete square shows
AI Ai
i AIi Aii
i AIi Aii
50 percent chances of A negative child is there.
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The mother's most likely genotype is heterozygous for both the ABO blood type gene (A and O alleles) and the Rh factor gene (Rh positive and Rh negative alleles), which is genotype IAiRr.
The question involves deciphering the mother's genotype based on the blood types and Rh factors of her children, considering that blood type and Rh factor are not linked genes and have their distinct inheritance patterns.
Given that the father's phenotype is O negative (ii, rr), and two of the children have A positive blood type, the mother must be heterozygous for both the ABO and Rh factor genes. The presence of a type A, Rh negative child, confirms the mother has at least one copy of the recessive Rh negative allele (r) and one recessive O allele (i).
Considering the inheritance possibilities, the mother's most probable genotype would be IAiRr, which is option B) IAiRr. This allows the mother to have children with type A blood (whether Rh positive or Rh negative) as observed and rules out her having two dominant Rh positive alleles or two dominant A alleles, which would make it impossible for her to have an Rh negative or type O child.
What is Antarctica’s rarest commodity
Penguins are the rarest commodity of Antarctica. The paths they follow, carved by thousands of tiny footsteps, lead to Antarctica's rarest commodity.
Explanation:
The treaty sets aside Antarctica as a logical protect, sets up opportunity of logical examination, and bans military movement on the landmass. The bargain was the primary arms control understanding built up during the Cold War.
There are no regions in Antarctica by the Antarctic Treaty so you can travel anyplace on the landmass. In any case, by a similar settlement, there are various rules that all guests are required to follow. For instance, to regard logical research.
Carlos and his family were camping over the summer and came across the fossil picturered above. When school started, Carlos asked his parents if he could share the fossil with his class. Carlos told his peers he discovered the fossil within a particular layer of rock. What type of rock was this fossil most likely found in?
Answer:
Sedimentary
Explanation:
Almost all fossils are preserved in sedimentary rock because Igneous rocks form from molten rock, and rarely have fossils in them. Metamorphic rocks have been put under great pressure, heated, squashed or stretched, and fossils do not usually survive these extreme conditions.
Which of these choices is the smallest unit of matter?
atoms
molecules
droplets
vapor
Which statement is true about the adaptations of organisms?
O
A. They are acquired during life.
O
B. They are inherited from parents.
O
C. They are necessary for reproduction.
O
D. They are learned as needed.
Explanation:
Characters are certain features that are inherited from parents .
But all characters are not passed from parents to offspring .
There are certain variations also shown by an individual as compared to parents .
There are certain characters or features that are developed in organism not as a result of heredity or variation . They are refereed as Adaptation .
Adaptations
They are the certain characters that are developed in an organism according the conditions in which it survives .
The organism adapt to environmental condition in order to survive better and cope up better with the surroundings .
Answer:
B
Explanation:
How do you do this please it’s due tomorrow
3. genotype is round seed
phenotype is Rr
4. genotype is grey fur
phenotype are WW and Ww
5. genotype is short
phenotype is tt
1. genotype is high metabolism
phenotype are HH and Hh
Explanation:
The dominant trait is the capital letter and the reccessive is the lowercase letter.
To do a punnet square you bring down each letter say like problem 1, you bring down capital D down and little d down to each of the 2 squares below them, then you drag the sides to the right of the two squares and you get DD for the first square, then Dd, then below Dd, then next to it DD.
Phenotype is a organism's actual appearence.
Genotype is a gene combination. The gene combination that determines the phenotype
Answer: 3) Possible phenotypes is Rr only. All offsprings have Rr genotype.
Possible phenotypes: All the offsprings have round seed.
4). Possible genotypes are WW, Ww and ww.
Possible phenotypes: Three offsprings have white fur while one offspring has black fur.
5). Possible genotypes is tt only, all the offsprings have tt genotype.
Possible phenotypes: All the offsprings are short
I) Possible genotypes are HH and Hh.
Possible phenotypes: All the offsprings have high metabolism.
Explanation: Dominant trait is able to express itself in the presence of a recessive trait. A recessive trait is not able to express itself in the presence of a dominant trait.
Genotype is the gene makes up of an organism while phenotype is the physical manifestation of the genetic make up. Phenotype is simply the outward appearance of an organism which are usually controlled by the genes.
See the attached punnet squares for better understanding.
Which vegetable has the highest protein content?
Answer:
Spinach is the most nutrient dense green out there.
I know this because I learned it.
Answer:
spinach
Explanation:
if i got it wrong plz let me know :)
Carl and Abby are discussing what they have learned in class about electricity and magnetism. Carl tells Abby that an electric current running along a wire can be used to produce a magnetic force. Abby, on the other hand, tells Carl that moving electrons through a magnetic field can produce an electric current.
Carl and Abby are discussing what they have learned in class about electricity and magnetism. Carl tells Abby that an electric current running along a wire can be used to produce a magnetic force. Abby, on the other hand, tells Carl that moving electrons through a magnetic field can produce an electric current. Which of the students is/are correct? A. Only Abby is correct. B. Both Carl and Abby are correct. C. Neither student is correct. D. Only Carl is correct.
Answer:Both Carl and Abby are correct.
Option B
Explanation:The electrons that move through a magnetic field are moving in a circular motion. This is because the electric field and magnetic fields are perpendicular to each other. And the electrons move maintaining the Fleming's Left Hand Rule. And by current, we actually mean moving electrons. So electrons moving in magnetic field can produce current. So Abby is correct.
According to Carl, the electric current moving through a wire can produce magnetic field. This is the magnetic effect of current. The magnetic field produced by the wire is perpendicular to the wire maintaining Fleming's Left Hand Rule and its strength depends on current strength and distance from wire. So both Carl and Abby are correct.