What is the difference between an artery and a vein?
1 An artery carries blood away from the heart; a vein carries blood to the heart.
2 An artery is responsible for carrying blood; a vein is responsible for gas exchange.
3 An artery is responsible for gas exchange; a vein is responsible for carrying blood.
4 An artery carries blood to the heart; a vein carries blood away from the heart.
1 An artery carries blood away from the heart,a vein Carrie's blood to the heart
Answer:
1. An artery carries blood away from the heart; a vein carries blood to the heart.
Explanation:
An artery carries away oxygen-rich blood from the heart to other body parts, whereas a vein takes blood low in oxygen back to the heart for oxidation.
In addition to highly repeated DNA sequences and unique (single-copy) DNA sequences, a third class of DNA exists. What is it called, and what types of elements are involved in it
Answer:
long-read sequencing
Explanation:
a method of dna sequencing under active development
Days when the Sun’s light hits both hemispheres equally are called __________.
A.
rotations
B.
revolutions
C.
equinoxes
D.
solstices
Answer:
Equinox!!!
Explanation:
Answer:
it is an equinox.
Explanation:
Equinox
days when the suns light hits both hemispheres equally
hours of daylight and darkness
takes place during solstices.
Which food contains mostly polsaccharides
Answer:
food with carbohydrates
Explanation:
they comprises of two or more mono saccharides
‼️⁉️need answer ASAP ‼️⁉️Which property describes a mixture? Cannot be separated by physical methods. It has a Single Chemical composition. It cannot have more than one state of matter. It cannot be described by a chemical symbol or formula.
Answer:
Explanation:
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Answer:
D.
Explanation:
Because the flow speed in your capillaries is much less than in the aorta, the total cross-section area of the capillaries considered together must be much larger than that of the aorta. Given the flow speeds noted, the total area of the capillaries considered together is equivalent to the cross-section area of a single vessel of approximately what diameter
Answer:
Diameter of capillaries is 30-40 µm in diameter while on the other hand, the diameter of aorta is 4 cm.
Explanation:
The diameter of capillaries is 30-40 µm in diameter while on the other hand, the diameter of aorta is 4 cm which is the main reason for higher flow speed of the blood in the aorta as well as more blood is transported in the aorta. If the total area of the capillaries considered together is equivalent to the cross-section area of a single vessel of aorta then the flow speed of both is similar due to similar area.
A founding population usually has lower genetic diversity than the original population it came from. For those alleles that are shared by the two populations, how are allele frequencies different (or similar)
Answer:
In the founding population, the allele frequency is different from the original bigger-sized population. The size of the new population affects this difference even more. Some of the alleles will tend to increase, while some others will tend to decrease in frequency.
Explanation:
Genetic drift is an evolutive force. It is the random change that occurs in the allelic frequency of a population through generations. Its effects are harder in a small-sized population, meaning that the magnitude of this change is inversely related to the size of the original population.
Genetic drift results in some alleles loss -including the beneficial ones-, while some other alleles get fixated. Low-frequency alleles are the most likely to be lost. The changes produced by genetic drift accumulate in time and results in a loss of genetic variability within a population.
Genetic drift affects a population and reduces its size dramatically due to a disaster or pressure -bottleneck effect- or because of a population split -founder effect-. The bottleneck effect most likely affects smaller populations.
Founder effect refers to the origin of a new population from only a few individuals that are coming from a bigger-sized population. These founder individuals, which are carrying some of the genes of the original population, settle down in a new area and reproduce. The new and small population might or might not be genetically representative of the original one. Some rare alleles might be exceeded or might be lost by complete. Consequently, when the small population increases in size, it will have a genetically different composition from the original one. In these situations, genetic variability is reduced, and there exists the possibility of developing a peculiar allelic composition. When the number of individuals that originated the new population is low, the founder effect will be very extreme because the genetic drift effects are inversely proportional to the original number of individuals.
Please help
Please answer correctly
Answer:
1 a
2 b
3 c
Explanation:
What causes global circulation?
1. the Earth's core cools down some areas more than others
2. parts of the world heat up differently
3. the water in the oceans acts as an insulator
4. the sun stops emitting radiation at night
Answer:
parts of the world heat up differently
Explanation:
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Identify the biotic factor of an ecosystem from the following
Answer:
Ecosystems are influenced by both biotic and abiotic factors. Biotic factors include animals, plants, fungi, bacteria, and protists. Some examples of abiotic factors are water, soil, air, sunlight, temperature, and minerals.
write an account of the different methods of protecting endangered species of animals and plants around the world. include the use of legalisation in your answer 6
QER
Answer:
Provide suitable place, making laws and reduce pollution.
Explanation:
Provide suitable place where they can breed without disturbance, making laws to forbit hunting of endangered species and reduce pollution are the different methods that can protect endangered species of animals and plants around the world. For increase in population, suitable environment is required so that they have no predators or other factor that adversely affect their growth. The laws to forbit hunting or killing has also a significant effect on endangered species. Pollution is the main reason for change in the environment that make the environment not suitable for animals and plants.
What is produced during the Krebs cycle?
A. carbon dioxide
B. glycogen
C. oxygen
Links and random responses will be reported
Answer:
A. carbon dioxide
Explanation:
For one cycle, two molecules of carbon, three molecules of NADH, one molecule of FADH2 and one molecule of ATP or GTP are produced.
I NEED HELP ASAP PLZZZZZZZZZZZZZZZZ
Answer:
B. Bald eagles are hunted until near extinction, population recovers
Explanation:
A bottleneck effect can arise when the population of a species is drastically reduced by an occurrence. Human activities plays a major role in regard to creating a bottleneck effect in our present day. Human activities such as overhunting result into bottleneck effect. When overhunting reduces the population of a particular species, the few individuals left would have a reduced genetic variation which is not representative of the original population. The few individuals left further reproduces individuals of their kind carrying a genetic composition that is different from the original gene composition of the old population.
The case of the hunting of bald eagles until near extinction before they begin to recover is a perfect case of the bottleneck effect. Only a small proportion of the eagles original population survives. Generic variation reduces. The genetic variation in the new population of the bald eagles will be different from that of the original population.
A water pipe bursting in the winter is a result of which type of weathering?
A. Biological
B. Exfoliation
C. Chemical
D. Freeze-thaw
Hurry!
Answer:
D
because water expands when it freezes
in your own words, what is the definition for Lysine?
THREE USES THAT CELLS MAKE OF THE ENERGY RELEASED BY ATP
Answer:
ATP provides the energy needed for many essential processes in organisms and cells. These include intracellular signaling, DNA and RNA synthesis, Purinergic signaling, synaptic signaling, active transport, and muscle contraction.
Explanation:
A state in which an object is in motion. OA. static B. dynamic OC. vector OD.scalar
Answer:
the answer is gonna be c
Explanation:
that is all
This table shows the codons found in messenger RNA (attached). Using this information, what sequence of nucleotides in the template strand of DNA could code for the polypeptide sequence Val-His-Thr?
A. GUA-CAU-ACC (THIS IS WRONG)
B. GTA-CAT-ACC
C. CAT-GTA-TGG
D. CAU-GUA-UGG
Please explain, I'm very confused about this topic and I want to learn about it. No false answers or you will immediately be reported. Thanks in advance!
Answer:
A
Explanation:
The correct answer would be option A - GUA-CAU-ACC
Looking at the table of codons, for the amino acid Val, the first base (which is on the 1st column in the 6th row) is G while the second base (2nd column, 2nd row) is U. The third column can be any of U, C, A, or G (6th column, 4th row). Hence, GUA is plausible
For the amino acid His, the first base is C (1st column, 2nd row), the second is A (4th column, 4th row) while the last could be any of the 4 bases. Hence, CAU is plausible.
For the amino acid Thr, the first base is A (first column, 5th row), the second is C (3rd column, 2nd row) while the 3rth could be any of the 4 nucleotide bases. Hence, ACC is plausible.
Therefore, the correct sequence of nucleotides for Val-His_Thr would be GUA-CAU-ACC
The accumulation of glucose 6-phosphate inside a bacterial cell via phosphorylation of glucose is an example of:
Answer:
group translocation
Explanation:
Group translocation is a specialized type of active transport that moves substances across biological cells. In group translocation, substrates are chemically modified during transport across the cell membrane. An example of group translocation is the phosphotransferase system, which is used by bacteria for sugar uptake using phosphoenolpyruvate as the source of energy. This system removes the phosphate groups from phosphoenolpyruvate and adds these groups to glucose molecules in order to form glucose 6-P.
Which of these choices is the original source of energy that humans receive from consuming
an herbivore such as a cow?
Answer:
the glucose we make from eating the cow
What are limiting factors for plant growth
Answer:
factors are;extremely hotdrought gravity ( I suppose ) the amount of minerals in the soilHAVE A NİCE DAY
Explanation:
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Question 17 of 25 Look at the protein below. Which could be its function? A. Storing energy B. Moving material into cells O C. Transporting oxygen PREVIOUS
What would most likely happen to this ecosystem if all of the gray wolves were removed?
Answer:
D. The fox population would decrease
Explanation:
The food web shows that the gray wolves population are the only population that prey on the moose population. If the gray wolves were removed, the population of moose would increase significantly and would dominate the ecosystem. This means that other herbivores won't be able to compete with the moose population for the forages and vegetation in the ecosystem. The population of the other primary consumers/herbivores will reduce also. By implication, the fox which depend on other smaller preys to feed on would not have much prey to feed on. The ultimate effect of the removal of the gray wolves would lead to a later decrease in the population of the fox
science please answer>:3
Answer:
1. Winter
2. Summer
3. greenhouse
4. global warming
A. Summer and monsoon
B. Greenhouse gases and global warming
C. Away and Towards
What is green house gases?
"The main greenhouse gases whose concentrations are rising are carbon dioxide, methane, nitrous oxide, hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs) and ozone in the lower atmosphere."
What is global warming ?
"Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere".
To know more amount green house
https://brainly.com/question/1280370
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Cigarette smoke contains carbon monoxide. Explain how this
would affect the normal functioning of red blood cells in a person who
smokes cigarettes.
Answer: Carbon Monoxide is a very harmful and toxic gas which is formed from incomplete combustion of carbon.
Explanation: red blood cells contain haemoglobin ,which are responsible for carrying oxygen into our body system. So oxygen combines with haemagoblin to form oxyhaemogoblin in the red blood cells .
so if a person starts to intake cigarettes which contain high amounts of carbon monoxide ,it reduces oxyhaemogoblin formation because it binds very tightly to the haemogoblin .then carboxyhaemogoblin is formed and its permanent so causing reduction in aerobic respiration, and reduction in oxygen transport and causing damages to heart muscles.
Hope this helps if you need any more explanation feel free to comment in the comment section below !!!
What was Anton van Leeuwenhoek contribution in the development of cell theory
Answer:
animalcules
Explanation:
that is it i think
A ______ is a circular band of muscles designed to prevent movement into or out of a body cavity or organ. Multiple choice question.
Answer:
sphincter
Explanation:
circular muscle that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning.
Glucose molecules provide energy to power the swimming motion of sperm. In this example, the sperm are changingA) chemical energy into kinetic energy.B) chemical energy into potential energy.C) kinetic energy into potential energy.D) kinetic energy into chemical energy.E) kinetic energy into thermal energy.
Answer:
A
Explanation:
The correct answer would be that the sperms are changing chemical energy to kinetic energy.
In order to power the movement of the sperm cells, chemicals in the form of glucose molecules are hydrolyzed and the resulting energy from the reaction is used to power the movement of the sperm cells. Moving sperm cells possess kinetic energy. Thus, we can say that the chemical energy in the glucose molecules is converted to kinetic energy in the sperm cells.
The correct option is A.
How do somatic and inherited mutations differ?
Answer:
Inherited mutations exist in all cells in the body and somatic mutations only exist in the cell type that mutated.
Now you are going to use station data to write weather forecasts for several cities for today. Write your
forecasts in complete sentences. Assume you are writing for the general public Be sure to discuss
temperatures, winds, and possible precipitation
Answer:
Temperatures and direction of wind are the following.
Explanation:
Los Angeles has highest temperature i.e. 56 and lowest temperature of 47 degree Fahrenheit and wind moves towards Southwest direction.
Salt Lake city has highest temperature i.e. 42 and lowest temperature of 36 degree Fahrenheit and wind moves towards West direction.
Chicago II has highest temperature i.e. 28 and lowest temperature of 27degree Fahrenheit and wind moves towards Midwest direction.
Philadelphia has highest temperature and lowest temperature is the same i.e. 56 degree Fahrenheit and wind moves towards Northeast direction.
New Orleans has highest temperature i.e. 75 and lowest temperature of 70 degree Fahrenheit and wind moves towards South direction.