Which organ provides support to the body and is where blood cells are produced?
Answer:
bones / bone marrow
Explanation:
Answer:
Skeletal system, bone marrow
Explanation:
The body has eleven organ systems. One is the skeletal system, consisting of a skeleton protecting your organs and providing support to your muscles and body. In adults, all of the blood cells are produced in the bone marrow, including red blood cells. Under some abnormal conditions, blood cells may be produced in other organs such as the liver, spleen or lymph nodes.
This matter has a definite shape and volume with particles closely packed together with very little movement. It is a
liquid
solid
gas
plasma
People with ________ experience complete cessation of respiratory activity for brief periods of time yet do not have frequent awakenings and do not tend to feel tired during the day.
People with central sleep apnea experience a complete cessation of respiratory activity for brief periods of time yet do not have frequent awakenings and do not tend to feel tired during the day.
What is sleep apnea?Breathing regularly stops and starts during sleep, which is known as sleep apnea. People may have sleep apnea if they snore loudly and still feel exhausted after a full night's sleep.
These are the primary forms of sleep apnea:
The more prevalent type of obstructive sleep apnea happens when throat muscles relax.
Central sleep apnea, which develops when your brain fails to properly activate the breathing muscles,
When a person has both central and obstructive sleep apnea, it is known as complex sleep apnea syndrome, also called treatment-emergent sleep apnea.
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Explain a time you would need to evaluate something in science.
Answer:
To study if the reuse of industrial treated wastewater may adversely affect life in a river basin system
Explanation:
The process of evaluation in science enables us to understand a given phenomenon from the natural world. Scientists have a standardized-objective method to investigate how the natural world works. This scientific method consists of the following steps: 1- to observe a given phenomenon form the real world, 2- to ask one or more questions about this phenomenon, 3- to raise a working hypothesis in order to explain these questions, 4-to test the hypothesis by experimental and/or observational procedures, 5- to obtain the results and conclusions. In this case, the scientific method can help to understand the effects of the industrial treated water in the life of the river system, and these results could be used as a starting point to predict its effects on other aquatic ecosystems.
What animals make up the PhylumPorifera?A. bivalvesB. spongesC. plantsD. single-celled organisms
The phylum Porifera contains the sponges, which are multicellular sessile organisms without a nervous, digestive, or circulatory system.
This means B, sponges, is the right answer.
is it true that When organisms struggle to survive, they usually mutate to increase chances of reproduction.
When the organisms struggle to survive, they mutate to increase the chances of reproduction, is a true statement.
Certain species possess characteristics that make them more competitive in their habitat than other species. Animals undergo natural selection, but neither plants nor other creatures do.
A genetic modification or mutation known as an adaptation aids an organism, such as a plant or animal, in surviving in its environment. The mutation is passed down from generation to generation because it is beneficial.
Species accumulate the resources that they need to survive over thousands of years. These resources are frequently scarce in nature, forcing individuals within a society to struggle for them in order to survive. When facing extinction, organisms frequently mutate to increase their chances of procreation.
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Regions: The West Unit Test
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Question
How are tundra and deserts similar?(1 point)
both are hot
both are hot
both are cold
both are cold
both are dry
both are dry
both are wet
Tundra and deserts are similar in that both are cold and dry. Tundra regions are found in the polar regions, where the temperatures are extremely cold and the land is covered in snow and ice.
Deserts, on the other hand, are hot during the day and cold at night, but both have very little precipitation and are characterized by dry, barren landscapes. While the climates of these two regions may be different, they share similar adaptations by plant and animal life to survive in harsh environments with limited resources.
For example, plants in both regions are often small and have shallow root systems, while animals have developed various adaptations such as thick fur, hibernation, and migration to survive the extreme conditions.
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All living things are made of matter- the smallest unit of: ____
Answer:
particles called cells
Explanation:
have a nice day and stay safe :}
a chemical that kills gram-positive bacteria and gram-negative bacteria would best be described as __________.
A chemical that kills both gram-positive and gram-negative bacteria would best be described as a broad-spectrum antibiotic.
Gram-positive and gram-negative bacteria are two types of bacteria classified based on the structure of their cell walls. Gram-positive bacteria have a thick peptidoglycan layer outside of their plasma membrane, while gram-negative bacteria have a thinner peptidoglycan layer surrounded by an outer membrane containing lipopolysaccharides.
Antibiotics are medications used to treat bacterial infections. Some antibiotics are effective against only gram-positive bacteria, while others are effective only against gram-negative bacteria. However, some antibiotics are broad-spectrum, meaning they are effective against both gram-positive and gram-negative bacteria.
Therefore, a chemical that kills both gram-positive and gram-negative bacteria would best be described as a broad-spectrum antibiotic, which can be used to treat a wide range of bacterial infections.
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what is the net amount of atp gained from anaerobic breakdown (glycolysis) of one molecule of glucose in the cytoplasm during anaerobic respiration?
Glycolysis generates only two total molecules of ATP per glucose molecule from anaerobic breakdown (glycolysis) of one molecule of glucose in the cytoplasm during anaerobic respiration.
Glycolysis is the process of breaking down sugar molecules to release energy for cellular metabolism. It takes place in the cell's cytoplasm. The primary goal of glycolysis is to produce thousands of ATP molecules for use in various cellular metabolisms. The primary goal of glycolysis is to produce pyruvate for the trichloroacetic acid (TCA) cycle rather than to produce adenosine 5′-triphosphate.
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how does the nucleus help the plant cell wall carry out its function?
choose 1 answer:
(A) the nucleus breaks down sugar to provide energy that the cell wall uses to build its structure.
(B) the nucleus stores sugars that are used in building the cell wall.
(C) the nucleus contains genes that provide information for building parts of the cell wall.
Answer:
C maybe
Explanation:
because it is the work of nucleus i guess
If a cylinder is filled to the 50 ml mark then a marble is put into the cylinder the water rises to the 54 ml mark what is the volume of the marble?
Answer:
4 mL.
Explanation:
You would have to use water displacement in order to find the volume of an irregular object. How to calculate this is subtracting the final water level and the initial water level. Which would just be 54 mL - 50 mL, and that will be 4 mL.
Whats sounds can dogs hear that we cant ?
Answer/Explanation:
Dogs have outstanding senses. not only do they have good smelling sense but they also have a good sense of hearing. Humans can't hear hear above 20,000 HZ. However, dogs can hear much higher pitches than we can. Dogs can hear up to 65,000 HZ. This is why we are unable to hear a dogs whistle, but the dogs can.
protection of red blood cells from hemolysis is a role of which vitamin?
Answer:
Explanation:
Vitamin E deficiency,
3. What is the original source of energy for all fossil fuels?
hydrocarbons
photosynthesis
the Sun
cosmic radioactivity
Answer:
the sun
Explanation:
All the energy in oil, gas, and coal originally came from the sun, captured through photosynthesis. In the same way that we burn wood to release energy that trees capture from the sun, we burn fossil fuels to release the energy that ancient plants captured from the sun.
hope this helps
in sexually reproducing organisms, the diploid phase of the life cycle begins at gamete formation. meiosis. spore formation. mitosis. fertilization.
Diploid organisms are organisms with two sets of chromosomes. In sexually reproducing organisms, the diploid phase of the life cycle begins with the formation of gametes through meiosis and ends with fertilization, which creates a new diploid organism.
Gametes are reproductive cells (sperm and egg cells) that contain one set of chromosomes each.
Meiosis is a process of cell division that produces gametes, which occur in the diploid phase of the life cycle.
Spore formation is a type of asexual reproduction in which cells divide to produce haploid spores that can grow into new individuals.
Mitosis is a process of cell division in which a diploid cell is duplicated, resulting in two identical daughter cells with the same number of chromosomes.
Finally, fertilization is the process by which gametes combine to form a new, diploid cell that has two sets of chromosomes.
In summary, the diploid phase of the life cycle begins with the formation of gametes through meiosis and ends with fertilization, which creates a new diploid organism.
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You are studying a population of Dlugosch’s Small Octopus that has been suffering from a skin disease. In your work, you find that some individuals have more resistance (immunity) to the disease than others. You remember learning about life history trade-offs in your Ecology class, and you hypothesize that immunity trades off with investments in other major life history traits in the octopuses. You decide to design a study to test whether higher immunity leads to a lower number of eggs produced by females.
9. State a prediction for what the results of your study would look like if they support the hypothesis given in the Mission.
Make a figure of results that would be consistent with that prediction:
Label y axis with the variable that should be on the
Label x axis with the variable that should be on the
Draw results bars or lines consistent with your prediction
If the infection reduces the population size of the octopus, would you predict an r or a K strategy would be more likely to evolve (based on what we discussed in class)? Explain why that life history strategy would be favored in a small population, and give at least two traits associated with the strategy that you predict.
If higher immunity leads to a lower number of eggs produced by females in Dlugosch's Small Octopus, then there will be a negative correlation between immunity level and egg production.
A K approach would be more likely to develop if the illness causes the octopus population to decline. Resources are few in a tiny community, therefore long-term stability and survival are prioritized over rapid population expansion. The K approach emphasizes having fewer kids while allocating more resources to ensuring their survival and welfare. In a small population, the following two characteristics connected to a K strategy might be more prevalent:
Increased parental care: Parents invest more time and resources in raising a smaller number of offspring to increase their chances of survival and reproductive success.
Delayed maturation: Individuals take longer to reach reproductive maturity, allowing them to invest more time in growth, development, and building up resources before reproduction.
These traits help ensure the survival and success of the limited number of offspring in a small population, aligning with the K-selected life history strategy.
In this figure, the y-axis represents the number of eggs produced by females, and the x-axis represents the immunity level of the octopuses. The bars or lines would show a decreasing trend as the immunity level increases, indicating a negative relationship between immunity and egg production.
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Answers for the letter b, c, and d.a. Show the f2 generation Punnett square, when two offspring from the f1 generation cross. b. What is the phenotypic ratio for the outcome above? Put full phenotype descriptions with the ratio. c. This ratio is regarded as the key clue which led Mendel to discover which law? d. From the ratio, how many homozygous pure-breed offspring were there eventually after the final cross? Give the genotypes of all.
B. Phenotypic ratio outcome
9- Yellow round (IIRR, IIRr, IiRR, IiRr, IIRr, IiRr, IiRR, IiRr, IiRr)
3- Yellow wrinkled (IIrr, Iirr, Iirr)
3- Green round (iiRR, iiRr, iiRr)
1- Green wrinkled (iirr)
The ratio is 9:3:3:1
C. This ratio is regarded as the key clue which led Mendel to discover the LAW OF INDEPENDENT ASSORTMENT.
The law of independent assortment states that the alleles of two or more different genes are sorted into gametes that are independent of one another.
D. There were two homozygous pure-breed offspring during the final cross. These are:
IIRR - homozygous yellow round
iirr- homozygous green wrinkled
Compare the chromosome number of the parent cell with that of each daughter cell.
Answer:
In mitosis, the daughter cells have the same number of chromosomes as the parent cell, while in meiosis, the daughter cells have half the number of chromosomes as the parent.
Suppose there is a population with a trait controlled by a simple dominant/recessive mendelian trait with two alleles b and b in hardy-weinberg equilibrium. if the frequency of b in the population is 0.7, and there are 80 individuals in the population, approximately how many bb individuals do you predict there to be?
Since there are 80 individuals in the population, we can multiply the frequency of bb individuals (0.3) by the total population size (80) to get the approximate number of bb individuals.
0.3 * 80 = 24
To find the approximate number of bb individuals in the population, we can use the Hardy-Weinberg equation. In a population with two alleles, the frequency of the dominant allele (p) plus the frequency of the recessive allele (q) equals
Given that the frequency of allele b is 0.7, we can calculate the frequency of allele B as 1 - 0.7 = 0.3.
According to the Hardy-Weinberg equation,
\(p^2 + 2pq + q^2 = 1, where p^2\)
Represents the frequency of individuals with the dominant trait (BB), 2pq represents the frequency of individuals who are heterozygous (Bb), and q^2 represents the frequency of individuals with the recessive trait (bb).
Since we know that q (the frequency of allele b) is 0.3, we can substitute the values into the equation.
0.7^2 + 2(0.7)(0.3) + q^2 = 1
0.49 + 0.42 + q^2 = 1
0.91 + q^2 = 1
q^2 = 1 - 0.91
q^2 = 0.09
To find the frequency of bb individuals, we take the square root of 0.09, which is approximately 0.3.
Therefore, we predict that there will be approximately 24 bb individuals in the population.
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which is an example of a population ? a group of lions of a single species that live in the same general area of a prairie at the same time
a pack of one species of lions that are present in the same region of a prairie at the same time. A population is any creatures of the same species that are found in a specific area.
Limiting considerations determine how a population is distributed. A group of creatures of the same species that cohabitate and exist in the same location at the same time, such as the population of people, apple trees, or deer in a forest. The study of population dynamics, or population biology, provides data essential to biological studies. Additionally, it aids in the prevention of agricultural pests and the preservation of rare and endangered species.
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Which type of mass movement is the most destructive? Ocreep O erosion O landslide O slump.
Answer:
Landslides
Explanation:
The most destructive kind of mass movement is a landslide, which occurs when rock and soil slide quickly down a steep slope. Such mass movement is common were road builders have cut highways through hills or mountains.
landslide is a type of mass movement which is the most destructive. Thus option C is correct.
What causes land slides ?
A landslide is a mass destructive movement of a rock, debris down a slope.
It is a form of mass waste due to gravity which indicates any down-slope movement of rock and soil. It take place with earthquakes, floods and volcanoes.
Different causes lead to occurrence of land slide such as when down-slope forces exceed the strength of the earth’s materials causes slope movement.
It also occurs due to snowmelt, rainfall, water level changes, groundwater changes, volcanic activity, earthquakes etc.
These types of mass movement is commonly observed in road builders and in the hills or mountains areas.
Thus option C is correct.
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I need help with this question somebody answer!!
Answer:
The essential factor to increase the number of cells in a growing organism is that each and every cell has a complete copy of DNA.
Explanation:
The development and growth of an organism is based on the multiplication of its tissue cells. Cell multiplication in somatic cells occurs through mitosis, a process that allows obtaining two identical daughter cells from a progenitor cell.
DNA contains all the genetic information belonging to a living organism. In the process of mitosis, the DNA of each cell must be replicated so that each daughter cell has a complete copy of the original DNA. This ensures that each cell resulting from mitosis has the same structure and function as the original cell.
The other options are not correct because:
The size of the cell is important, since each cell has defined characteristics, according to the tissue it must form. Each and every cell needs to have a complete DNA. In somatic cells, DNA does not vary from one cell to another.GIVING 100 POINTS AND BRAINLIEST FOR BEST ANSWER!!!!
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Which organism is most reliant on other organisms, natural processes, or both for reproduction? Explain your answer.
Answer:
The organism most reliant on other organisms for reproduction is a parasite. Parasites rely on other organisms, such as their host, for reproduction as they lack the necessary reproductive organs. They must rely on the reproductive organs of their hosts in order to reproduce. Additionally, parasites may rely on natural processes such as environmental conditions in order to reproduce.
Answer:
sexual reproducers
Explanation:
season, and where other organisms are
Pre-Test
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TIME REMAININ
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46:50
Chan Hee is inflating a basketball using an air pump. He notices that the pump gets warm as he uses it. What is a good
hypothesis that could lead to new experimentation?
If there is no air in a basketball, then it is hard to play the game.
A basketball that is inflated bounces better than one that is not inflated.
If air in a pump is squeezed more, then the air gets hotter because energy is added to it.
Basketball is more fun to play than baseball because you have to move a lot more.
Answer:
If air in a pump is squeezed more, then the air gets hotter because energy is added to it.
Explanation:
A good hypothesis in the given case is that inflating basketball is getting warmer, the more it is pumped, and as a result, it would possess more heat or more friction due to all the air being pumped into the basketball at a single time.
hope this helped!
describe the main difference between primary and secondary succession.
Answer:
Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and other organisms usually lack soil.
Secondary succession is one of the two types of ecological succession of a plant's life. It is the process started by an event (e.g. forest fire, harvesting, hurricane, etc.) that reduces an already established ecosystem (e.g. a forest or a wheat field) to a smaller population of species, and as such secondary succession occurs on preexisting soil whereas primary succession usually occurs in a place lacking soil.
Explanation:
Primary succession takes time for completion around 1000 years, whereas secondary succession area takes 200 years for completion. In primary succession, there is a lack of soil and humus for the sustaining of life whereas, in secondary succession, soil and humus are present with some organisms.
A Secondary succession can take a few hundred years.
The cost of running a large greenhouse is particularly affected by the levels of light and temperature. If plants are provided with plenty of carbon dioxide the grower can get two crops a year at 20°C and three crops a year at 30°C. Explain why many growers use 20°℃ rather than 30°C in their greenhouses. In your explanation suggest why many growers are also investing in insulation systems that can be added and removed electronically. [6 marks]
While higher temperatures may offer an extra crop, the increased costs and risks associated with maintaining a higher temperature make it less attractive to many growers.
Why do many growers use different temperatures in greenhouse?Many growers use 20°C rather than 30°C in their greenhouses because the cost of running a large greenhouse at 30°C is much higher than at 20°C. The higher temperature requires more energy to maintain, which translates to higher operating costs. Additionally, the higher temperature increases the risk of plant stress, disease, and pests, which can lead to reduced crop yields and quality.
Furthermore, while the higher temperature can provide an additional crop, the extra crop may not offset the additional costs of heating and other inputs required to maintain the higher temperature. The lower temperature of 20°C provides a more optimal environment for many plant species and can produce high-quality crops with good yields.
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helppppppppppppppppp
Answer:
Choose the corresponding number. (The answer is explained in the explanation in the biological terms).
Explanation:
The label that points to the part of the ATP synthase that is like the blades of a turbine is labeled "F1." The F1 component of ATP synthase contains the catalytic sites responsible for synthesizing ATP, and it rotates like a turbine to drive the synthesis of ATP. Similarly to how the blades of a turbine are moved by water or wind, the F1 component is rotated by the flow of protons through the enzyme, which generates the energy needed to produce ATP.
What kind of effect can a chromosomal change can have on an organism? positive, negative, or no effect positive or no effect negative effect positive or negative effect
Answer:
positive, negative, or no effect
Explanation:
It was right on the test
Positive, Negative or no effect can a chromosomal change can have on an organism. So, the correct option is (A).
What is Chromosomal change?When there is an increase or loss of chromosome number from the normal number of chromosomes which is 46, it is called aneuploidy. A common form of aneuploidy is trisomy which is the presence of an extra chromosome in cells.
"Tri-" is Greek for "three" which define as the people with trisomy have three copies of a particular chromosome in their cells instead of the normal two copies.
Chromosomal abnormalities can occur when an accident occurs when the egg or sperm are being formed or during the early developmental stages of the embryo. Maternal age and certain environmental factors may play a role in the occurrence of genetic errors. There are Positive, negative, or no effect in the chromosomal change.
Thus, Positive, Negative or no effect can a chromosomal change can have on an organism. So, the correct option is (A).
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okazaki fragments are a. rna primers used for dna replication. b. the remnants of the original strands that are dispersed in the new double stranded dna molecules c. short dna pieces that explain how dna is synthesized on the lagging strand. d. short dna pieces that explain how dna is synthesized on the leading strand.
The leftover pieces of the original strands that are scattered throughout the new double strand DNA molecules. DNA replication uses RNA primers.
What exactly are DNA Okazaki fragments?Okazaki fragments are temporary DNA bits that are created at the replication fork during lagging strand DNA synthesis.
What are the purposes of Okazaki fragments?Even though the lagging strand is orientated in the opposite direction from the leading strand, Okazaki fragments are principally responsible for enabling the DNA polymerase to synthesize it. The RNA primers are removed and replaced with DNA by a particular form of DNA polymerase called DNA polymerase.
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