In third-degree, or complete, heart block there is a shortfall of AV nodal conduction, and the P waves are never connected with the QRS edifices. At the end of the day, the supraventricular driving forces produced don't lead to the ventricles.
Third-degree AV block demonstrates a total loss of correspondence between the atria and the ventricles. Without fitting conduction through the AV hub, the SA hub can't act to control the pulse, and heart result can reduce auxiliary to loss of coordination of the atria and the ventricles.
Electrical signs don't go from your atria to your ventricles with this kind. There is a finished disappointment in electrical conduction. This can bring about no heartbeat or a listless heartbeat on the off chance that a reinforcement pulse is available.
To learn more about nodal conduction here
https://brainly.com/question/9058294
#SPJ4
What do snails and clams have in common?
The common characteristics of snails and clams is that both belong to the phylum Mollusca and posses a calcareous shell on their body.
The phylum Mollusca is the second largest phylum of the kingdom Animalia. These are the invertebrate animals that are characterized by the presence of a calcareous shell on their body. The example of Mollusca are: snails, oysters, etc.
Shell is the outermost skeleton of organisms of Mollusca. It is made of calcium carbonate as the main constituent. The shell may be present only on the upper side of the body. Or it may be present on both the side, such animals are referred to as bivalves.
To know more about Mollusca, here
brainly.com/question/28504850
#SPJ4
PLEASE HELP!!!!!!! Discuss the progression of multicellular organisms to first inhabit the land. Discuss at least 2 adaptations that were needed to thrive in this new environment.
Answer:
Explanation:
The first evidence of multicellularity is from cyanobacteria-like organisms that lived 3–3.5 billion years ago.
how they survive
The cell proliferates to produce many more cells that result in the multicellular organism. The process starts with a single fertilized cell that increasingly divides to form many more cells. In the process, the genome causes the cells specialize through selective gene expression.
A female horse gives birth to an offspring on a farm. The farmer notices the offspring
is especially fast and healthy. He would like to identify which male horse is the
offspring's father for selective breeding purposes. He asks a local university to run a
DNA fingerprint with DNA samples from the mother, offspring and the three male
horses on the farm. Which male does the data show is MOST likely the offspring's
father?
Answer:
male 2
Explanation:
Everything the offspring has that the mom doesn't , male 2 does
The farmer notices the offspring is especially fast and healthy. The male that data show is most likely the offspring's father is male 2.
What is selective breeding?The likelihood of biodiversity rises as a result of selective breeding. By breeding organisms for particular desired features that can be passed on to their progeny, a procedure known as selective breeding is used.
Because distinct features and genetic differences may become more obvious, biodiversity may rise as a result. Pick parents from a mixed population who exhibit these traits.
They have interbred. Select the best progeny with the necessary traits to create the following generation. Continue doing this for numerous generations until all of your progeny possess the desired traits.
Therefore, the male that data show is most likely the offspring's father is male 2.
To learn more about selective breeding, refer to the link:
https://brainly.com/question/483203
#SPJ2
Use Exam Activity 30-1 to identify and describe the six functions of mammalian hair.
Answer: Hair insulates the body against heat loss. A mammal eats about 10 times as much as a lizard of the same size. that of insulating against cold by conserving body heat. The differing colours and colour patterns in hair coats can also serve purposes of camouflage and of sexual recognition and attraction among the members of a species. The most important function of hair in mammals is that of insulating against cold by conserving body heat. ... Specialized hairs called vibrissae, or whiskers, serve as sensory organs for certain nocturnal animals. The specially modified hairs of the porcupine are called quills and serve defensive purposes. The most important function of hair in mammals is that of insulating against cold by conserving body heat. The differing colours and colour patterns in hair coats can also serve purposes of camouflage and of sexual recognition and attraction among the members of a species. brainliest??
Explanation:
50 POINTS AND BRAINLEST!!!!
What is the chemical symbol for the element sodium?
The chemical symbol for the element sodium is referred to as Na.
What is a Chemical symbol?This is referred to as the abbreviation which is used in chemistry for chemical elements, functional groups and other types of chemical compounds.
They are derived or gotten from one or two letters from the Latin alphabet and is usually written with the first letter being in capital form. It is a very important aspect in the representation of elements in a chemical reaction or equation.
Sodium is a chemical element with the symbol Na and atomic number 11 and is an alkali metal, because it is in group 1 of the periodic table. The latin name is Natrium which is therefore the reason why Na which is the first two letters with the first in capital form is regarded as the chemical symbol.
Read more about Chemical symbol here https://brainly.com/question/15045637
#SPJ1
Answer:
the chemical symbol of the element sodium is Na
Which of these physical structures in animals is similar to this structure in plants?
Answer choices:
Exoskeleton
Feathers
Scales
Fur
Answer:
Exoskeleton
Explanation:
What are two similarities between natural and artificial selection?
Natural selection is a process that occurs when environmental factors that limit survival and reproduction, such as harsh environments or mating competition, are present.
Selected breeding falls within the definition of "artificial selection." Breeding is the natural act of two species mating, but selective breeding is an artificial process where people intervene and pick certain organisms to marry. Selective breeding and natural selection can be contrasted in three ways.
Artificial selection is a human-driven process. Natural selection is governed by environmental demand for selection. The artificial selection process is managed by breeders. Natural selection has significantly boosted biological diversity on Earth. As opposed to natural selection, artificial selection makes it simpler for the breeder to pass on desired qualities.
Learn more about natural selection Visit: brainly.com/question/23929271
#SPJ4
What are the characteristics of the central nervous system?
a. it is made up of the brain and spinal cord.
b. it is a system of bones that supports the body.
c. it uses the spinal cord as a pathway to transmit messages to the pns.
d. it contains networks of nerves called plexuses.
The central nervous system (CNS) is the part of the nervous system that consists of the brain and the spinal cord. The CNS is responsible for receiving and interpreting information from the body and the environment.
The central nervous system is responsible for integrating information from various sources, such as the senses, and for coordinating responses to that information. The central nervous system is responsible for controlling and coordinating the actions and movements of the body, such as muscle movement and balance. The central nervous system is responsible for higher functions such as perception, thought, memory, and emotion, The brain is protected spinal cord by the skull and the spinal cord is protected by the vertebral column, which helps to protect the CNS from physical trauma. The central nervous system uses electrical and chemical signaling to communicate with the body and other spinal cord systems. The central nervous system has the ability to change and adapt in response to new experiences, a property known as neural plasticity.
learn more about central nervous system here:
https://brainly.com/question/2114466
#SPJ4
Can muscle tightness cause back pain?
Spasticity, cramps, stiffness, and discomfort are just a few of the symptoms that can result from tight lower back muscles and back pain. These sensations might be constant, modest aches or intense, crippling misery.
What is spasticity?Spasticity is a disorder characterized by an unnatural rise in muscular tone or stiffness, which may impair speech or movement and be accompanied by discomfort or pain. Damage to the nerve pathways in the brain or spinal cord that regulate muscle action is the usual cause of spasticity.
What is pain?Uncomfortable bodily feelings are generally referred to as pain. It results from nervous system stimulation. Pain can be bothersome or incapacitating. It could feel like mild pain or a violent stabbing. Also, possible adjectives for it are throbbing, pinching, stinging, scorching, or sore.
What are muscles?Soft tissue like a muscle can be found in both humans and animals. Actin and myosin protein filaments make up the muscle cells, which glide past one another to cause contraction and alter the cell's length and form.
To know more about muscles, check out:
https://brainly.com/question/13920046
#SPJ1
What is faster? A cheetah, a race car, Usain Bolt, A speed boat
Why was Lucy's mutation not a problem?
Because it has no effect on the active site, the gene mutation is not an issue.
Lucy was able to produce more proteins and break down deoxyadenosine correctly after receiving stem cell therapy, which helped her fight off the additional stop protein.
The active site will not be affected by the gene mutation. This is because the non-essential amino acid or protein in the molecule is affected by the mutation. The molecule maintains its original shape and state as a result. In addition, the active site of the quaternary protein structure comprises a large number of proteins. Therefore, the mutation won't have a significant impact on the molecule's overall structure or ability to perform its function.
The complete question is:
Your scan of Lucy's ADA gene showed a mutation in the active site. Why was this mutation not a problem?
Learn more about mutation here:
https://brainly.com/question/17130462
#SPJ4
What is staminate flower? Find out any one dissimilarity among bacteria and fungi.
Answer:
A staminate flower is a male flower, bearing only stamens
Bacteria are prokaryotic entities
Fungi are eukaryotic entities and multicellular
What can you put on an apple slice to keep it from turning brown
Everything about this like
Hypothesis
Independent Variable
Dependent variable
Answer:
lemon juice
Explanation:
Acids prevent browning because they react with the oxygen that comes into contact with the surface of the sample. Once all the acid (or whatever else is covering the surface) has reacted with the oxygen or the acid has degraded or washed off, then the sample will start to brown again. Stronger acids, like lemon juice, can even denature the enzyme. This means that the enzyme can no longer perform its original function because of its environment.
explain the characteristics of living things
Living things have a number of characteristics that set them apart from nonliving things. These characteristics include Organization, Metabolism, Growth and development, Response to stimuli, Reproduction, Homeostasis, Adaptation.
Organization:
Living things are highly organized, with a clear hierarchy of structures from the smallest (such as cells) to the largest (such as entire organisms).
Metabolism:
Living things are able to convert energy from their environment into forms that they can use to sustain themselves. This process is known as metabolism.
Growth and development:
Living things grow and change over time. This can involve physical changes, such as getting taller or developing new body structures, or it can involve changes in behavior or function.
Response to stimuli:
Living things are able to sense and respond to stimuli in their environment. This can involve physical responses, such as moving toward or away from a stimulus, or it can involve changes in behavior or function.
Reproduction:
Living things are able to reproduce, either sexually or asexually, in order to create new individuals of their own kind.
Homeostasis:
Living things are able to maintain a stable internal environment, even when the external environment is changing. This process is known as homeostasis.
Adaptation:
Living things are able to adapt to their environment in order to survive and thrive. This can involve physical adaptations, such as developing new body structures or behaviors, or it can involve genetic adaptations, such as the evolution of new traits.
Learn more about living things:
https://brainly.com/question/28532386
Living things have the following characteristics: growth, movements, respiration, excretion, nutrition, and reproduction.
GROWTH: All living things grow in some way or another. Be it an increase in the number of cells due to cell division, or the proper organization of the cell, all living things show some sort of growth.
MOVEMENT: Living things are mobile in nature. They show some sort of movement in their lifetime.
RESPIRATION: Living things respire. it is a chemical reaction that causes energy to be released from the food that they intake.
EXCRETION: It is the process of excreting or removing the products that are formed during the breakdown of food that the being does not require.
NUTRITION: It is the process in which the living thing intakes nutrition. It can happen in different ways in different beings.
REPRODUCTION: It is the process in which the organism creates its progeny and passes on genetic information to it. It has various levels of complexity depending on the organism.
Individuals with a(n) ________ body type gain muscle more easily than individuals with other body types.
Individuals with a(n) mesomorphic body type gain muscle more easily than individuals with other body types.
Mesomorphic body types are characterized by a broad chest, long limbs, and a V-shaped torso. Individuals with this body type typically gain muscle more easily than those with other body types. This is due to the fact that their bodies naturally contain more lean muscle mass and their metabolism is higher. They also tend to build muscle more quickly in response to exercise and have more balanced levels of hormones that stimulate muscle growth.
Additionally, they have an advantage in terms of how quickly they can recover from intense exercise, allowing them to continue to progress in their workouts. For these reasons, individuals with a mesomorphic body type are able to gain muscle quickly and easily.
To learn more about mesomorphic visit:
https://brainly.com/question/1692386
#SPJ4
Misspelling a word is like ____ in a game
Answer:
Misspelling a word is like an error in a game.
Explanation:
I don't know.
3. Which type of molecule is more likely to quickly pass through a cellular membrane via simple diffusion, polar or non-polar
Non-polar molecules are less likely to be drawn to the polar phospholipid heads of the cell membrane, which makes them more likely to move across a cellular membrane swiftly via simple diffusion.
This indicates that they can more readily traverse the hydrophobic (non-polar) tail section of the cell membrane. Polar molecules, on the other hand, are drawn to the phospholipid heads and may have trouble crossing the cell membrane.
Simple diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration without the aid of a transport protein. The cell membrane is a selectively permeable membrane, which means that it only allows certain molecules to pass through.
Non-polar molecules, such as hydrocarbons, can easily diffuse through the hydrophobic (non-polar) tails of the phospholipid bilayer because they are not attracted to the polar heads of the phospholipids.
To learn more about non-polar molecules
https://brainly.com/question/24775418
#SPJ4
Why do cloned calico cats look different?
Answer:
Even with the exact same genetic make-up, a calico cat’s coloration would be different than her twin’s because it’s random whether a cell codes for orange or black fur. The same goes for clones.
Explanation:
What are two factors that increase the genetic variation in a population ?
Gene flow and genetic drift are two factors that increase the genetic variation in a population.
Genetic variations are the changes or alterations which can occur in the sequence of gene of the DNA. These genetic variations are very necessary as they enable different living beings to evolve and also survive. There are two factors which can cause an increase in the genetic variation of a particular population and they are gene flow and genetic drift.
Gene flow can be defined as the movement of genes which occurs in and out of a specific population. The in-flow of genes in a population can help increase the genetic variation of the individuals that are a part of that population. Genetic drift is defined as the change in allelic frequency of a population which occurs by chance. It brings about genetic variation.
To know more about population here
https://brainly.com/question/14256554
#SPJ4
How many nucleotides are
involved in a point mutation?
?
Answer:
It is the result of a single nucleotide, but due to the one mistake of the first singular nucleotide many can be changed.
Answer:
One or a few
Explanation:
Which conclusion can be made from the observation below?
Hypothesis: A feather weighing two grams takes longer to fall from a distance of six meters than a two-gram ball bearing.
Procedure: Use a timing device to measure the amount of time it takes for a feather and a ball bearing to fall to the floor from a distance of six meters.
Observation: The feather took more time to fall to the floor than the ball bearing.
A. The feather fell slower because it weighs less.
B. The ball fell faster because it has more gravitational force.
C. The ball fell faster because it weighs more.
D. The feather fell slower because it encountered more air resistance.
what can temperature and pH measurements tell you about the biogeochemical cycles in a pond ecosystem
The most important climatic element affecting soil N and P cycles is temperature. Temperature increases often aid in the breakdown of soil organic matter and the buildup of soil accessible nutrients.
They are essential because they recycle and store materials, as well as control key elements through physical features. These cycles represent the interaction of living and non-living entities in ecosystems and allow ecosystems to survive indefinitely.
Biogeochemical cycles change the chemistry of the ocean, atmosphere, and terrestrial ecosystems across geological time, so that rate-limiting reactions within important cycles change the speed and manner of development.
Learn more about to Biogeochemical
https://brainly.com/question/1204069
#SPJ4
True or False: Before making any decision (includes environmental), it
necessary to evaluate all risks and make mathematical models
False. Not all decisions require risk evaluation or mathematical modeling.
What is evaluation?Evaluation is the process of examining and assessing a product, system, service, or program to determine its worth and effectiveness. It is a systematic process that involves identifying and measuring objectives, gathering information, analyzing data, and drawing conclusions. Evaluation is important to determine if a program is meeting its intended goals and helping to improve outcomes. Evaluation can also be used to inform decisio-making, identify areas of improvement, and provide feedback on performance. Evaluation helps to ensure that resources are being used effectively and efficiently. It can also provide guidance for future investments, help to set objectives and priorities, and provide evidence-based information for the development of policies and programs.
To learn more about evaluation
https://brainly.com/question/13860025
#SPJ1
how do people acquire immunity?
a) through breastfeeding
b) through a shot
c) through antigens
d) through inflammation
Explain how a root hair cell is specialised for its function
Root hair cell are adapted for absorption of water by having a tubular structure which increases its surface area.
What is root hair cell?"Root hair cells are single tubular root cells."Due to its shape it has large surface area which helps in absorption of water.How root hair cell absorb water?The root hair cell absorb water by osmosis ("movement of solvent takes place from high water concentration to low water concentration through a semipermeable membrane.")Hence we can say that root hair cell has large surface area which specialized in absorption of water.
To know more about root hair cell here
https://brainly.com/question/23811428
#SPJ2
Fleas bite the skin of dogs, suck their
blood, and cause them to itch. The fleas,
in turn, get food and a warm home. This is
an example of
Answer:
parasitism
Explanation:
Animal cells (like a muscle cell) that require a lot of energy probably have many _____?
A. mitochondria
B. chloroplasts
C. lysosomes
D. ribosomes
Answer:
mitochondria
it produces energy, and the cells are animal cells
Animal cells are the eukaryotic cells defined by the presence of the organelles and nucleus. The muscle cells that require a lot of energy probably have many mitochondria. Thus, option A is correct.
What is the function of mitochondria?Mitochondria is one of the major organelles that are present in large numbers in animal cells. They are majorly involved in the biochemical process for energy production and have been made of double membranes.
Muscle cells have a large number of mitochondria in their cells as they need maximum energy to perform various activities and functions. They are the powerhouse that fuels the cell by ATP production. All the cellular functions and the activities of the muscles system are regulated by the mitochondria.
Therefore, option A. mitochondria is the correct blank.
Learn more about mitochondria, here:
https://brainly.com/question/3447995
#SPJ2
rock fragments transported in a streambed
Rock fragments transported in a streambed are Sediment loads that are eroded by water(streams).
What sediments are carried by streams?Streams are among the most powerful surface agents for eroding rock and sediment. Waterborne rock fragments, gravel, and sediment have an impact. The total amount of sediment transported is referred to as the load. The river has three types of sediment load: dissolved, suspended, and bed load.
When rock fragments carried by the swift current collide with bedrock channel walls, they knock off rock chips. Bedload particles follow the flow of water by sliding or bouncing along the bottom. The portion of sediment transport that rolls, slides, or bounces along the bottom of a waterway is referred to as bedload.
Learn more on rock fragments here: https://brainly.com/question/21056099
#SPJ1
Is Gause’s Principle accurate? Explain why or why not.
Yes, Gause’s Principle is accurate mainly due to his description of how two species with the same niche cannot coexist in the same habitat.
What is the application of Gause's principle?Gause, which claims that it is impossible for two species to live when they are vying for the same resources. Gause's law is another name for this rule. A population will push out another population. If any of the members of the extinct population are still alive, it is because they have adapted to the new niche.
According to Gause's theory of competitive exclusion, two species that are vying for the same scarce resource cannot live in the same niche for an extended period of time.
Learn more about habitat at:
https://brainly.com/question/20319955
#SPJ1
If an athlete were using illegal growth hormones to increase his or her muscle growth, he or she would be trying to make changes to his or her:
If an athlete were using illegal growth hormones to increase his or her muscle growth, he or she would be trying to make changes to his or her endocrine system.
A intricate system of glands and organs makes up the endocrine system. Your body's metabolism, energy level, reproduction, growth and development, and response to injury, stress, and mood are all regulated and coordinated by hormones. The following elements make up the endocrine system: Hypothalamus. An growth organ that produces hormones that are released directly into the bloodstream and travel to tissues and organs throughout the body.endocrine system regulate many bodily functions, including growth and development, metabolism, and fertility.
To learn more about hormones, click here.
https://brainly.com/question/13020697
#SPJ4