Answer: A few theroies include:
Explanation:
Started with one tiny rock (aka Earth) then other rocks ran into each other till carbon, hydrogen, built up preasure to make algea and other crustation. Started with a cell and the magnetic pull brought lava together then dirt then mold the grass.Life can be defined as any system which is capable of performing the functions such as eating, metabolizing, excreting, and responding to external stimuli.
What is Life?Life is co-eternal with the matter and it has no beginning. Life arrived on the Earth at the time of the Earth's origin or are shortly thereafter in life. Life arose on the early Earth by a series of the progressive chemical reactions. Such type of reactions may have been likely or may have also required one or more highly improbable chemical events in nature.
Life is also defined as any system which is capable of performing functions such as eating, metabolizing, excreting, breathing, moving, growing, reproducing, and also responding to the external stimuli.
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What controls the heart rate in the human body
Answer: the nerve system
Explanation:
Answer:
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS)
Explanation:
The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate
I hope this help you
As you walk down the hall on the way to class, several students sneeze. You unknowingly inhale some of the droplets
that were expelled when they sneezed, allowing the flu virus to enter your body. Explain the nonspecific immune
defenses that the virus must bypass in order to infect a body cell. (5 points)
Answer:
The innate or nonspecific immune system includes two lines of defense in the human body. Non-specific means that it does not act on the specific pathogen. It works equally to keep all types of pathogens such as bacteria, viruses, parasites et cetera out of the body. The first line of defense includes physical barrier which prevents the entry of pathogens into the body. It includes skin, respiratory tract, gastrointestinal tract, cilia, nasopharynx, eyelashes, and body hairs.
The second line of defense includes anti-inflammatory responses, fever, and nonspecific cellular responses such as phagocytes, macrophages, complement system et cetera. Thus, the virus has to pass physical, chemical, and nonspecific cellular responses of the body in order to infect the body.
Explanation: I found this answer on a different site and it was right, no need to thanks me, no problem
The antiviral defense is composed of changes in cells that prevent viral replication and increase susceptibility to death by lymphocytes.
What innate defense mechanism against viruses?Viral replication interferes with protein synthesis and cell function and leads to injury and death of the infected cell. The main mechanisms of innate immunity against viruses are inhibition of type I interferon infection and NK cell-mediated destruction of infected cells.
With this information, we can conclude that the antiviral defense is composed of alterations in the cells that prevent viral replication and increase the susceptibility to death by lymphocytes, thus eliminating the reservoirs of viral infection.
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During New Moon, when does the Moon set?
Answer:
New Moon Rises at sunrise, transits meridian at noon, sets at sunset
Explanation:
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Jamal observes a plant that is growing on his front porch. after a storm the plant fell over and it began to grow up and away from the ground.
The change in the plant's growth is evidence that the plant is living because
A.) the change is evidence of the plant's DNA
B.) the change is evidence that the plant will reproduce
C.) the change is evidence that the plant is organized
D.) the change is evidence of responding to stimulus
WILL GIVE BRAINLIEST AND 50 POINTS
which statement best describes a scatterplot ?
A- it shows how strongly two variables are related
B-it shows the averague value for each of the variables
C-it shows a line that connects a series of data points
D-it shows a frequency distribution between variables
Answer:
It shows how strongly two variables are related
Explanation:
In scatter plots the dots inside it report the values of individual data pointsThese dots also patterns when the data are taken as a whole. it is used for identifying other patterns in data.During an experiment, what is the purpose of a control group?
Group of answer choices
To disprove the theory
To produce replicated results of other groups
To compare results to the experimental group with the variable being tested
To prove the hypothesis
Answer:
its the things That are being controlled the same way between one another
Explanation:
You have 2 plants that are the same Type
you water your plant the same amount of water
you give your plants the same amount of soil
What statement best describes “biology”?
The naming of organisms
The study of natural selection
The science of life
The measurement of populations
Answer:
the science of life
Explanation:
The science of life
7.
is related to the energy of motion of the particles of matter.
Answer:
Temperature measures the average kinetic energy of the particles in a substance. Thermal energy measures the total kinetic energy of the particles in a substance. The greater the motion of particles, the higher a substance's temperature and thermal energy.
Explanation:
Answer:
Temperature measures the average kinetic energy of the particles in a substance. Thermal energy measures the total kinetic energy of the particles in a substance. The greater the motion of particles, the higher a substance's temperature and thermal energy.
Explanation:
What is the best description of the word 'recessive' as it is used in biology?
A. Having two identical versions of an allele in a cell.
B. An allele that is always expressed, even if there is only one copy in a cell.
C. An allele that induces reclusive behavior in an organism.
D. An allele that is only expressed if two versions of it are present in a cell.
boil
Answer:
An allele that is only expressed if two versions of it are present in a cell.
boil
How would agricultural systems most likely be impacted if transportation costs suddenly rose greatly?
More people might decide to buy from local farms.
Most farms might shrink in size.
o There would be more variety available in grocery stores.
Costs of tropical fruits would decrease.
More people might decide to buy from local farms. i think
Any change in the nucleotide sequence of DNA is called a?
-mutation.
-frameshift.
-O base substitution.
Answer:
mutation
Explanation:
As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation.
In this module you will learn to identify the plant parts and their functions. Why do you think plants are important in our life?
Answer:
: Green Plants are the sources of energy for all oraganism. They trap the solar energy and convert it into chemical energy in the form of food(starch)and they give off oxygen. if all green plants would not be there then all the herbivores will die due to starvation and so will the carnivores.
:Plants are really important for the planet and for all living things. Plants absorb carbon dioxide and release oxygen from their leaves, which humans and other animals need to breathe.
Also many plants are very useful in field medicine.
:Roots of plants and trees reduce soil erosion by holding the soil firmly.
One hydrogen bond is _, but many hydrogen bonds are_
Answer:
[tex]\huge\mathfrak\pink{ur}\huge\fbox\green{answer}[/tex]
The hydrogen bond is one of the strongest intermolecular attractions,
A single hydrogen atom can participate in two hydrogen bonds, rather than one. This type of bonding is called "bifurcated" (split in two or "two-forked"). It can exist, for instance, in complex natural or synthetic organic moleculesAnswer:
7
1
We usually get some questions about how many hydrogen bonds these compounds can create, we use it to differentiate between the boiling point of each one of them so it would be great if you could help me.
So what I know that H2O has 4 hydrogen bonds those are 2 from hydrogen atoms and 2 from other molecules that has 2 hydrogen atoms connected to the 2 lone pair of electron that the oxygen has.
In HF, It has 2 hydrogen bonds. The same explanation implies here. In NH3, 2 hydrogen bonds because N doesn't have the required amount of lone pairs to make more hydrogen bonds.
Explanation:
what is the values of pOH 0.020M HNO3
Answer:
pOH is 12.3
Explanation:
let's first get the pH of nitric acid:
[tex]{ \sf{pH = - log[H {}^{ + } ]}}[/tex]
but:
[H†] = 0.020 M
therefore:
[tex]{ \sf{pH = - log(0.020) }} \\ { \sf{pH = 1.7}}[/tex]
but, pOH = 14 - pH
[tex]{ \sf{pOH = 14 - 1.7}} \\ { \sf{pOH = 12.3}}[/tex]
Which condition is required for viruses to reproduce?
Answer:
A host is required so that the virus is able to reproduce.
Explanation:
Unlike bacteria, viruses cannot survive without a host. They primarily survive while attaching itself onto a host's cell. So therefore, in order for meiosis to occur within a virus, it needs a host first. In addition, viruses don't need another virus because viruses are prokaryotic cells.
which statement best explains the significance of meiosis {sex cell division} in evolution of a species?
Explanation:
meiosis help organism to replace worn out tissues
pls help me for number 9 !! : ) ( Science )
Answer:
it is the life process of butterfly
genetic crossings example
Answer:
Answer:Monohybrid Cross
Answer:Monohybrid CrossIn a monohybrid cross, the parent organisms differ in a single characteristic. Suppose, for example, two humans have children. The father has a widow's peak and the mother does not. A widow's peak is a dominant trait, meaning that if the child inherits the gene for this trait from one parent, that child will have a widow's peak regardless of the gene inherited from the other parent.
Answer:Monohybrid CrossIn a monohybrid cross, the parent organisms differ in a single characteristic. Suppose, for example, two humans have children. The father has a widow's peak and the mother does not. A widow's peak is a dominant trait, meaning that if the child inherits the gene for this trait from one parent, that child will have a widow's peak regardless of the gene inherited from the other parent.Consequently, there are two possibilities. The child could inherit the widow's peak gene from his father, or he could inherit the non-widow's peak gene from his father. He will inherit a non-widow's peak gene from its mother, who does not have the widow's peak gene. In this particular monohybrid cross, there is a fifty-fifty chance that any given child will have a widow's peak.
Answer:Monohybrid CrossIn a monohybrid cross, the parent organisms differ in a single characteristic. Suppose, for example, two humans have children. The father has a widow's peak and the mother does not. A widow's peak is a dominant trait, meaning that if the child inherits the gene for this trait from one parent, that child will have a widow's peak regardless of the gene inherited from the other parent.Consequently, there are two possibilities. The child could inherit the widow's peak gene from his father, or he could inherit the non-widow's peak gene from his father. He will inherit a non-widow's peak gene from its mother, who does not have the widow's peak gene. In this particular monohybrid cross, there is a fifty-fifty chance that any given child will have a widow's peak.Dihybrid Cross
Answer:Monohybrid CrossIn a monohybrid cross, the parent organisms differ in a single characteristic. Suppose, for example, two humans have children. The father has a widow's peak and the mother does not. A widow's peak is a dominant trait, meaning that if the child inherits the gene for this trait from one parent, that child will have a widow's peak regardless of the gene inherited from the other parent.Consequently, there are two possibilities. The child could inherit the widow's peak gene from his father, or he could inherit the non-widow's peak gene from his father. He will inherit a non-widow's peak gene from its mother, who does not have the widow's peak gene. In this particular monohybrid cross, there is a fifty-fifty chance that any given child will have a widow's peak.Dihybrid CrossIn a dihybrid cross, the parents differ in two characteristics you want to study. The pattern of inheritance here is somewhat more complicated. Suppose, for example, that you have two parents, one of whom has dimples and a widow's peak while the other has no dimples and no widow's peak. Dimples, like a widow's peak, are a dominant trait. Consequently, if these two traits are not linked, each child has a 1/4 probability of inheriting dimples and widow's peak, a 1/4 probability of inheriting dimples but no widow's peak, a 1/4 probability of inheriting a widow's peak but no dimples, and a 1/4 probability of inheriting neither. Keep in mind, however, that linked traits might exhibit very different patterns.
Answer:
Flower colour in pea plants
Explanation:
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the process through An event in the surrounding which leads to a reaction
Answer:
Exothermic process
Explanation:
Compared to land surface temperature changes, water surface temperature changes occur
Answer:
night is the answer that
Explain two ways in which trachea is adapted to perform its function
Answer:
The trachea has a number of adaptations: cartilage rings in the walls of the trachea help to keep it open. ciliated epithelium and goblet cells to clean the air before it reaches the lungs.
The two approaches in which the trachea is adapted to carry out its characteristic:-
The trachea serves as a passage for air, moistens and warms it even as it passes into the lungs, and protects the breathing floor from an accumulation of foreign debris.The trachea is coated with a wet mucous-membrane layer composed of cells containing small hairlike projections referred to as cilia.What is the trachea?The trachea normally referred to as the windpipe is a tube approximately 4 inches long and much less than an inch in diameter in the majority. The trachea begins surely underneath the larynx (voice field) and runs down to the again of the breastbone (sternum). The trachea then divides into smaller tubes known as bronchi: one bronchus for each lung.
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Help please ASAP I need this answer
Answer:
a: metaphase
Explanation:
the chromosomes are aligned at the metaphase plate
The higher the temperature of water, the faster an egg will cook.
The answer is True. When higher is the temperature of water, the faster an egg will cook.
b. "OK. Let's mix these two chemicals together and see what happens!"
c. "That concludes my presentation on the effects of using caffeine as a pesticide."
d. “If watching TV makes one gain weight, then I will lose weight if I stop watching TV."
e. “My graph shows that dolphins communicate better with a female trainer."
Electron microscopes are the best tool for use on living things.
Answer:
Hi, Your Answer would Be False
Explanation:
, electron microscopes can't be used to look directly at living things because of the special preparation that samples must undergo before they are visualised
The nervous system of bats enables their amazing sensory capabilities and also highlights some o
the levels of biological organization. Put each element of bat vision in order from least to most
complex.
Start by clicking the first item in the sequence or dragging it here
Drag the items below into the box above in the correct order, starting with the first item in the sequence.
The retina of bats is made up primarily of rod cells, allowing bats to see well in dim light.
The optic nerve conveys the sensory information from the bat's eye to the visual cortex of the
brain.
Nitrogen is a necessary atomic element in proteins like visual pigments.
The musculoskeletal system of the bat acts on the information supplied by the nervous system
to capture prey.
The bat eyeball has adaptations to the retina and lens for low-light vision.
Rod cells have a high level of rhodopsin molecules, allowing visual acuity in low light.
Rhodopsin is a photopigment molecule that is highly sensitive to light.
Help me please
The levels of biological organization are atomic, molecular, cellular, tissue, organ and systems of organs (such as nervous and muscular systems).
The correct levels of biological organization from the simplest to the most complex are:Nitrogen is a necessary atomic element in proteins like visual pigments;Rhodopsin is a photopigment molecule that is highly sensitive to light;Rod cells have a high level of rhodopsin molecules, allowing visual acuity in low light;The retina of bats is made up primarily of rod cells, allowing bats to see well in dim light;The bat eyeball has adaptations to the retina and lens for low-light vision;The optic nerve conveys the sensory information from the bat's eye to the visual cortex of the brain;The musculoskeletal system of the bat acts on the information supplied by the nervous system to capture prey.The nitrogen (N) atom is a fundamental component of biomolecules such as DNA (nitrogenous bases) and proteins (aminoacids).Rhodopsin is a light-sensitive protein pigment that is abundant in the rod cells found in the retina. This pigment (rhodopsin) is responsible for night vision.There are two types of photoreceptor cells located in the retina: rod cells and cone cells. Rod cells are required for vision at low light levels.The retina and lens are parts of the eye: the retina is a layer at the back of the eye; whereas the lens is located behind the iris and the pupil. The visual system is composed of the eye (i.e., the sensory organ) and different areas of the central nervous system which include the optic nerve, optic tract, and visual cortex.The musculoskeletal system and nervous system work together in response to stimuli such as visual motion or stimulus localization.Learn more in:
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Answer:
A carrier is right answer
Una galleta con chispas de chocolate y un helado con fresas, son ejemplos de:
A. Sustancia
B. Compuesto
C. Mezcla homogénea
D. Mezcla heterogénea
Una galleta con chispas de chocolate y un helado con fresas, son ejemplos de mezclas heterogéneas.
Una mezcla heterogénea está compuesta por dos o más sustancias diferentes, en donde es posible distinguirlas fácilmente ya que es una composición no uniforme. Las sustancias que lo forman no son representadas por ninguna fórmula química pero a su vez tienen sus propiedades particulares.
No se trata de una mezcla homogénea ya que la misma se trata de una mezcla uniforme en donde sus componentes no se pueden distinguir fácilmente. Esto significa que toda la mezcla posee las mismas propiedades. Unos ejemplos de mezcla homogénea son el agua de mar, café con azúcar, cerveza, etc.
Tampoco se trata de una sustancia ya que la misma se trata de cualquier componente que posee ciertas propiedades físicas y químicas estables que pueden detectarse fácilmente. Está compuesto de moléculas o átomos iguales, siendo ejemplos de sustancias: oxígeno, nitrógeno, etc. Además, no es posible separar una sustancia mediante ningún método.
Por último, tampoco se trata de un compuesto ya que el mismo se trata de una mezcla de distintos elementos que se combinan en una reacción, que pueden representarse mediante una fórmula química y que no pueden separarse o romperse salvo por procesos químicos puntuales. Es decir, está formado por moléculas con átomos distintos pero en la misma proporción, y siempre se trata del mismo tipo de molécula. Por ejemplo, el agua, que está formada por un átomo de oxígeno y dos de hidrógeno (H2O).
Para concluir, podemos decir que un elemento está formado por un solo tipo de átomo. Una sustancia se encuentra formada por mas de un elemento unido mediante un enlace químico. Un compuesto está formado por elementos distintos unidos, y una mezcla está formada por sustancias que pueden ser iguales o no, pero en cantidades aleatorias y que pueden separarse. En una mezcla homogénea, la composición es la misma en cualquier parte, y en la mezcla heterogénea la composición es variante.
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Why biotic and abiotic factors are important to an ecosystem
