Answer:
Blood is a mixture of two components: cells and plasma. The heart pumps blood through the arteries, capillaries and veins to provide oxygen and nutrients to every cell of the body. The blood also carries away waste products.
The adult human body contains approximately 5 liters (5.3 quarts) of blood; it makes up 7 to 8 percent of a person's body weight. Approximately 2.75 to 3 liters of blood is plasma and the rest is the cellular portion.
Plasma is the liquid portion of the blood. Blood cells like red blood cells float in the plasma. Also dissolved in plasma are electrolytes, nutrients and vitamins (absorbed from the intestines or produced by the body), hormones, clotting factors, and proteins such as albumin and immunoglobulins (antibodies to fight infection). Plasma distributes the substances it contains as it circulates throughout the body.
Explanation:
People do not cut down trees for fuel these days. True or False
Answer:
False I think sorry if it is wrong
HELP ASAP PLEASE!
Which practice would most likely deplete a nonrenewable natural
resource? *
1)harvesting trees on a tree farm
2)burning coal to generate electricity in a power plant
3)restricting water usage during a period of water shortage
4)building a dam and a power plant to use water to generate electricity
Answer:
A practice would most likely deplete a nonrenewable natural resource is burning coal to generate electricity in a power plant.
The answer is 2: Burning coal to generate electricity in a power plant.
A cell with 12 chromosomes undergoes mitosis. How many daughter cells are
created?
each daughter cell has chromosomes.
Answer:
2 daughter cells with 12 chromosomes each
A population of tree frogs lives in an area that has many types of plants and trees. The skin of most of the frogs is gray, which blends in better with the bark of trees than with the leaves of plants. Some of the frogs have skin that is greener in color, which blends in better with grasses and leaves. Snakes and birds are predators of the frog. Humans have come to the area and are beginning to cut down the trees. Describe the probability of survival for the three frogs of each genetic variation of skin colour if most of the trees are cut down. Use evidence in the paragraph to support your answer.
Answer:
with the normal natural predators their chances of survival are high but when humans step in entire forests can be wiped out which will endanger every species of frog
If most trees are cut down, grey individuals will not survive because they will be more exposed to predation. Green frogs will show a greater survival rate. Directional selection is favoring the green phenotype and its genotype.
What is directional selection?
Directional selection is one of the different types of natural selection.
It increases the proportion of individuals with an extreme phenotypic trait.
It causes a decrease in the number of individuals expressing intermediate phenotype, and the other extreme phenotype.
This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.
In the exposed example, there is a natural environmental pressure: predation. Frogs need to camouflage to avoid being seen by birds and snakes.
Most frogs are grey. They camouflage with the bark of treesSome other frogs are green. They camouflage with the grass and leaves.The curve in a graph frequency vs phenotype shows a higher frequency of gray individuals.
When humans cut down the trees, they are applying another pressure to the population.
Since humans remove trees, grey frogs remain without a substrate in which to camouflage. They are now exposed to predation.
Birds and snakes can detect the gray frogs better and prey on them.
The grey phenotype and its genotype are affecting the animals' fitness. Grey frogs do not get to survive. So natural selection does not favor it.
Natural selection tends to benefit the green phenotype, which is now the one that increases the frogs' fitness. Green animals are not seen by predators, so they get to survive.
The curve in a graph frequency vs phenotype now shows a higher frequency of green individuals and a sharp decrease of grey frogs.
If more trees are cut down, grey individuals will not survive. However, green frogs will show a greater survival rate.
Directional selection is favoring the green phenotype and its genotype.
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2. Green plants produce ............. during photosynthesis. Answer
i dunno i think its carbon dioxide or oxygen
A relationship in which one species kills and consumes another species is known as
Answer:
Predation. An interaction in which one species kills and consumes another species
mark me as brainlist
When doing medical research with human subjects, which four limitations are unavoidable?
It's often impossible to repeat trials on the same subjects. 2-Subjects may report an inaccurate medical history. 3-It can be difficult to control all possible variables. 4-It's impossible to come up with testable scientific questions for human subjects.
Answer:
It’s often impossible to repeat trials on the same subjects.
Subjects may report an inaccurate medical history.
It can be difficult to control all possible variables.
There are ethical or privacy concerns to consider.
Is the alien theory a scientific claim? Why or why not?
Answer:
Yes.
Explanation:
In my opinion it is, since scientific professionals confirm that there's certainly life on space and other planets, it is not specified exactly what is out there although yes, there are certainly various creatures in space.
Someone help please?
Pre-eclampsia is caused by?
Answer:
Pre-eclampsia is thought to be caused by the placenta not developing properly due to a problem with the blood vessels supplying it.
Explanation:
I believe this is correct, if not let me know and I will fix it. I'm sorry in advance if it is incorrect.
Explanation:
1. high blood pressure.
2. Swelling of Hands And Feet
3. Protein in urine
______ refers to possessing different alleles for a trait.
Answer:
heterogeneous - possessing different alleles for a trait. homologous - possessing identical alleles for a trait.
What describes a country with less industry and whose citizens have low average incomes.
third world countries
Explanation:
are the results of countries with low exports and high imports
What is the main disadvantage of a flat map?
A Flat maps can't be made large enough that land masses appear the correct size.
B Flat maps distort the shapes and distances of the land masses.
C Flat maps are not easily carried from one location to the other.
D Flat maps are too small to accurately show details of the land masses.
Answer:
B
Explanation:
Which of the following situations would most likely lead to a stable population size?
Answer:A
Explanation:
Ribosomes are the site where
are produced.
Amino acids are coded for by triplet bases in RNA called
Answer:
Ribosomes are where PROTEINS are produced.
Amino acids are coded for by triplet bases in RNA called A CODON.
In a large population of sea stars, half of the individuals possess the red allele and half possess the purple allele. A change in the genome has been introduced, and many of those with purple allele are dying. Therefore, the red allele has become more frequent over time.
Which of the following requirements for the Hardy-Weinberg equilibrium is not being met?
Answer:
A
Explanation:
All mating must be totally random
Hardy-Weinberg equilibrium is a mathematical model that describes the genetic equilibrium of a population in terms of allele frequencies. It states that allele frequencies in a population remain constant over time in the absence of any evolutionary forces.
What are the requirements of the law ?In order for this balance to be maintained, five basic requirements must be met: large population size, random mating, no mutations, no migration, and no natural selection. In this case, the starfish population does not satisfy the fifth requirement for no natural selection.
Natural selection occurs as individuals with the purple allele die off, resulting in the red allele becoming more common over time. This type of directional selection causes allele frequencies to deviate from Hardy-Weinberg equilibrium.
Therefore, no natural selection requirement is met in this starfish population. This causes allele frequencies to change over time, leading to a deviation from Hardy-Weinberg equilibrium.
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The diagram shows a cross that is similar to one of Mendel’s pea plant crosses.
What is the dominant phenotype of the offspring in the cross shown?
A.Ff
B.FF
C.blue
d.white
Answer:
C. blue
Explanation:
In genetics, homo-zygous individuals are those individuals that have the same allele form (i.e., the same allele) for a given gene/locus, whereas heterozygous individuals have different alleles for that gene/locus. Complete dominance is a form of dominance that occurs when the allele that is dominant for a given gene/locus completely masks the effects of the recessive allele in a heterozygous individual. In this case, individuals that are heterozygous (genotype Ff) exhibit a dominant flower-blue phenotype because the dominant 'F' allele completely masks the effect of the recessive 'f' allele; therefore producing a phenotypic ratio of 3:1 in the offspring of a mating between two heterozygous individuals for this single trait.
Scientists use the scientific method in order to: (select all that apply) answer questions. provide an objective, standardized approach to experimentation. generate evidence to support their arguments. minimize prejudice or bias in the experimenter.
Answer:
The scientific method attempts to minimize the influence of bias or prejudice in the experimenter. ... It provides an objective, standardized approach to conducting ... By using a standardized approach in their investigations, scientists can feel ... Or they can ignore data that does not support the hypothesis.
Explanation:
Does bone marrow make red and white blood cells?
Answer:
Red blood cells, most white blood cells, and platelets are produced in the bone marrow, the soft fatty tissue inside bone cavities. Two types of white blood cells, T and B cells (lymphocytes), are also produced in the lymph nodes and spleen, and T cells are produced and mature in the thymus gland.
Explanation:
Answer:
Yes it do produces red and white blood cells
Explanation:
Bone marrow is the spongy tissue inside bones that produces blood cells.
Bone marrow produces red blood cells, platelets, and white blood cells.
Which shows the levels of organizational hierarchy listed from least complex to most complex?
O population, community, ecosystem
O ecosystem, population, community
O community, population, ecosystem
O community, ecosystem, population
Answer:
I think the answer to this question is O population, community, ecosystem.
Population, community, and ecosystem show the levels of organizational hierarchy from least complex to most complex. Therefore, the correct statement is option A.
What is the community consisting of?A community is made up of all the populations of different species that live in the same area and interact with one another. A population is a group of people from the same species who live there.
A biological system remembers every one of the living organic entities for a local area, as well as the actual climate in which they live and connect. In this order, the population is the most un-complex level, as it alludes to a gathering of people of similar species.
Community is more complicated because it involves interactions between multiple species populations. Because it encompasses all living and nonliving components of an area as well as their interactions, the ecosystem level is the most complex.
Therefore, population, community, and ecosystem show the levels of organizational hierarchy from least complex to most complex.
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In unicellular organisms a single cell carries out all life processes then why do multicellular organisms need tissues?
Answer:
Its very easy here see we human being and animals are mutlicelluar organism We have different cells which form tissues and tissues forms organs and organs form human body
Each and every cells and tissues have their own work and functions to do
Which means that if we have absence of heart in our body we can't live because heart tissues help us ro Survive
How would life be different if Earth did not rotate?
How are bacteria and archaea similar?
Answer:
Explanation:
Đều là vi khuẩn
how do you describe the shape of each sample of matter? do the ice cubes have a definite shape? how about the water? how about the vapor?
Answer:
Both no
Explanation:
be because it is liquid, they don't have fix shape
explain the absorption of mineral by root hair cell if all mithochondria remove from the cell .
Answer:
The root hair cells have carrier proteins in their cell membranes. These pick up the mineral ions and move them across the membrane into the cell against the concentration gradient . Because active transport moves ions against the concentration gradient into the root hair cells, energy is needed.Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
If something is 12 grams and has a volume of 1.6 cubic centimeters, how many grams per cubic centimeter.
Answer: 7.5 grams per cubic centimeter.
Explanation:
We area given that , Mass of something is 12 grams
Volume of that thing is 1.6 cubic centimeters
To find gram per cubic centimeters, we will divide Mass by Volume ( which computes Density)
Number of gram per cubic centimeters = [tex]\dfrac{12}{1.6}[/tex]
Number of gram per cubic centimeters = 7.5
Therefore, 7.5 grams per cubic centimeter. (density of the thing)
Please help asap!!!!
Answer:
3' AUGAACGGACGU 5'
Explanation:
For mRNA the complementary base pairing are Adanine always pairs with Uracil and thymine with guanine. you can also remember then as Apple Under and Car Garage.
Nature constantly adjusts the atmospheric carbon level. An increase in the level causes the atmosphere to hold more heat, which causes more water to evaporate from the oceans, which causes increased rain. Rain washes some carbon from the air into the oceans, where it eventually becomes part of the seabed. A decrease in atmospheric carbon causes the atmosphere to hold less heat, which causes decreased evaporation from the oceans, which causes less rain, and thus less carbon is washed into the oceans. Yet some environmentalists worry that burning fossil fuels may raise atmospheric carbon to a dangerous level. It is true that a sustained increase would threaten human life. But the environmentalists should relax—nature will continually adjust the carbon level.
Which one of the following, if true, would most weaken the argument in the passage?
(A) Plant life cannot survive without atmospheric carbon.
(B) It is not clear that breathing excess carbon in the atmosphere will have a negative effect on human life.
(C) Carbon is part of the chemical "blanket" that keeps the Earth warm enough to sustain human life.
(D) Breathing by animals releases almost 30 times as much carbon as does the burning of fossil fuels.
(E) The natural adjustment process, which occurs over millions of years, allows wide fluctuations in the carbon level in the short term.
Answer: E) The natural adjustment process, which occurs over millions of years, allows wide fluctuations in the carbon level in the short term.
Explanation:
If the natural adjustment process takes millions of years then it nature will not be able to adjust the levels of carbon in the atmosphere fast enough. This means that in the short term, carbon levels will fluctuate widely if more fossil fuels are burnt.
It is therefore necessary that humans reduce how much fossil fuels that burn to ensure that in the short term, situations on earth are manageable while the adjustment process goes on for millions of years.
This is the question I need help with.
Answer:
b is most likely to be the answer
Explanation:
Which statement is most likely to represent the way the society in the picture
values the natural environment?
A. Gardens in the backyard connect people to the environment.
B. The environment is a place to get away for the weekend.
C. Working with the environment provides food to put on the table.
D. The environment is a dangerous and hostile place.
Answer:
this would be C because wind turbines work as a way of making energy by using wind giving us electricity to cook an make our food
The statement that is most likely to represent the way society is portrayed in the picture is that working with the environment provides food to put on the table, which is in Option C, as the energy generated from the turbines can be used in cooking.
What is nature and human relationship?Human beings and the natural environment are deeply interconnected and interdependent, as ecosystems provide people with essential resources such as clean air, fresh water, and food, and they support our physical, emotional, and spiritual well-being, etc , so to promote a healthy and sustainable relationship between human beings and the natural environment, it is essential to recognize the interconnectedness of all living things and the importance of protecting and preserving the natural world.
Hence, the statement that is most likely to represent the way society is portrayed in the picture is that working with the environment provides food to put on the table, which is in Option C.
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Glycolysis results in a net gain of ____ ATP molecules.
A.
1
B.
3
C.
2
D.
4
Answer:
C: 2
Explanation:
Glycolysis yields two ATP molecules, two NADH molecules, and two pyruvate molecules: Glycolysis, or the aerobic catabolic breakdown of glucose, generates energy in the form of ATP, NADH, and pyruvate, which then feeds back into the citric acid cycle to generate additional energy.
In the process of glycolysis, glucose eventually decomposes into pyruvate and energy, yielding a total of 2 ATP. Therefore, option (C) is correct.
What is glycolysis?The metabolic mechanism known as glycolysis is responsible for the transformation of glucose into pyruvate. This process results in the liberation of free energy, which is then put to use in the production of high-energy molecules such as adenosine triphosphate and reduced nicotinamide adenine dinucleotide. Enzymes are responsible for catalyzing each of the ten processes that make up glycolysis.
The breakdown of glucose into pyruvate and energy occurs at the end of glycolysis. This process results in the production of a total of two ATP molecules.
Therefore, option (C) is correct.
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