Fruit flies have 8 chromosomes. During mitosis, one cell with 8 chromosomes divides to form 2 cells each with 8 chromosomes, how is this possible?
Owing to the fact that the parent cell duplicates itself with the same number of chromosomes into the daughter cells then the daughter cell each have eight chromosomes.
What is cell division?The term cell division has to do with the process by which a cell is broken down to give daughter cells. The process of cell division is responsible for the growth of the organisms. There are two kinds of cell division and these are the mitosis and the meiosis.
While mitosis occurs in the body cells, meiosis occurs in the gamete cells of the organisms. We know that in mitosis, the cell duplicates the exact same number of chromosomes in the parent nucleus into the daughter nucleus hence the daughter nuclei both have eight chromosomes.
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I NEED HELP RN PLSSSS
The process of evolution causes a population's genetic makeup to change throughout time. A new species, changed genes, and novel features can arise as a result of an organism's adaptations to its environment.
What is adaptive and maladaptive in an organism?When fitness costs outweigh fitness advantages, a characteristic is considered maladaptive. A trait is considered adaptive if fitness benefits outweigh costs.
Maladaptive features can arise for a variety of causes, although they can also develop as a result of environmental changes that affect an organism (due to phenomenons such as climate change.)
Therefore, adaptive and maladaptive in an organism help in survival.
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Hi I need help with this please!!!
(with a good explanation) (own words)
QUESTION: What does CHEMISTRY have to do with BIOLOGY?
Chemistry is related to biology because some chemical substances are obtained from living organisms and also, in biology, chemical reactions occur within living organisms.
What is the relationship between biology and chemistry?Biology is the study of ling things as well as their interaction with non-living things in their environment.
Chemistry is the study of matter, its composition, properties, as well as the changes it undergoes.
Since all living and non-living things are made of matter, the study of chemistry and biology are related.
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why is that cell structure and function are related because
Answer:
You should know, the cell is our most essential body forming unit. Each organ in our body is all formed of cells. Cells divide and multiply in order to make new organs as well as gametes. The cell is known as the structural and functional unit of life because all living beings are formed of cells.
how has china's population changed since 1950? what is the relationship between the availability of resources and population?
From 1960 to 2015, the population increased to around 1.4 billion people. China's population increased dramatically under Mao Zedong, from 540 million in 1949 to 969 million in 1979. The 1979 implementation of the one-child policy caused a slowdown in this increase.
The one-child policy in China is partially to blame for China's enormous population and comparatively tiny youth population. In late 1981, China's population surpassed 1 billion.
In December 2021, there were 1.413 billion people living in China. Han Chinese made up 91.11% of the population in 2020, and minorities made up 8.89%. China has the 159th-lowest population growth rate in the world, at about 0.03%. The sixth national population census in China was held in 2010, and the seventh census was finished in late 2020, with results made public in May 2021. The data on this page, unless otherwise noted, solely applies to mainland China; see also Demographics of Hong Kong and Demographics of Macau.
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Question 25 pts
The air travels down the trachea into two branching tubes called __ and then on into the __. At the __ , oxygen from the air enters the __. At the same time, the waste gas, __ , leaves the blood and then leaves the body when you ___. Some __ also leaves the body when you exhale, which is why mirrors get foggy when you breathe on them. The __ is the primary muscle that controls the lungs. It is important to keep the respiratory system clear so oxygen can keep flowing into your body. If something gets in your nose and irritates it, you __. If something gets in your trachea or bronchi and irritates it, you __.
If you need answer choices, let me know.
The air travels down the trachea into two branching tubes called bronchi and then on into the lungs.
At the lungs, oxygen from the air enters the blood.
At the same time, the waste gas, carbon dioxide, leaves the blood and then leaves the body when you exhale.
Some water vapor also leaves the body when you exhale, which is why mirrors get foggy when you breathe on them.
The diaphragm is the primary muscle that controls the lungs. It is important to keep the respiratory system clear so oxygen can keep flowing into your body.
If something gets in your nose and irritates it, you sneeze. If something gets in your trachea or bronchi and irritates it, you cough.
What is the lungs?The lungs are described as the pair of spongy, pinkish-gray organs in the chest.
The lungs has some functions which include:
The lungs brings in warms air to match the body temperature and moisturizes it to the humidity level the body needs. The lungs also delivers oxygen to the cells in your body. the lungs removes waste gases, including carbon dioxide, from the body when we exhale. The lungs also protects the airways from harmful substances and irritants.Learn more about the lungs at: https://brainly.com/question/22774213
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What is the difference between meiosis and fertilization explain what happens during both
Which of the following statements correctly describe(s) the relationship between the classes of hormones and their behavior or function?
The general chemical nature of a hormone can be used to predict: how soluble the hormone is in water. whether the hormone will be able to move through the cell membrane. whether the hormone interacts with receptors on the cell membrane. whether the hormone interacts with receptors inside the cell. whether the hormone will increase or decrease a specific cell function.
The correct options are:
How soluble the hormone is in waterwhether the hormone will be able to move through the cell membranewhether the hormone interacts with receptors on the cell membranewhether the hormone interacts with receptors inside the cellLet us understand these points in brief.
1) How soluble the hormone is in water. It depends on whether it is hydrophilic or hydrophobic. Example, the hormones deprived of lipids are hydrophobic, like, steroids. It means they are insoluble in water. Since, they are insoluble in water, so, they can be used to transport proteins.
2) whether the hormone will be able to move through the cell membrane. Hydrophilic hormones (from amino acids) are unable to diffuse through the lipid bilayer. So, the hormones which are derived from lipids are able to pass through the membrane because they are able to diffuse through the lipid bilayer. This diffusion occur through the membranes that have internal receptors.
3) whether the hormone interacts with receptors on the cell membrane. Since hormones are chemical messengers so they are able to interact with receptors that are present on the surface of the cell. That is how they effect the target cells.
4) whether the hormone interacts with receptors inside the cell. There are few receptors present inside the cells too. These hormones have the ability to interact with the receptors present inside the cells.
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How does the definition of a mineral differ between a miner and a geologist?
A miner defines a mineral as any naturally occurring inorganic solid that has a particular
crystalline structure and can be represented by a chemical formula, and a geologist defines a
mineral as anything taken from the ground.
A miner defines a mineral as anything taken from the ground, while a geologist defines a mineral
as any naturally occurring inorganic solid that has a particular crystalline structure, and can be
represented by a chemical formula.
A miner defines a mineral as an organic compound, while a geologist defines a mineral as a
naturally occurring element or vitamin.
There is essentially no difference in how a miner and a geologist define minerals.
The miner does not know the composition of the mineral but the geologist does. Option B
Who is a miner?The term miner has to do with any person who have been trained to be able to extract minerals from under the ground. This implies that the person is able to excavate the ground and just get the mineral out without minding what kind of mineral that have just been extracted.
On the other hand, the geologist is concerned about the structure of the mineral that have been extracted from the ground. The geologist wants to know the kind of substances that could be found in the mineral.
We can then say that; A miner defines a mineral as anything taken from the ground, while a geologist defines a mineral as any naturally occurring inorganic solid that has a particular crystalline structure, and can be represented by a chemical formula.
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True or FalseThe unequal ability of individuals to survive and reproduce leads to the gradual change in a population.
Answer:True
Explanation:
How does animal industries negatively impact our planet and its inhabitants?
The animal industries can damage the condition of water because of the discharge of substance such as nitrogen and phosphorus, nutrients and pathogens coming from the waste of the animals to the waterways and groundwater. It transmit ammonia that add to acid rain and the ecosystem's acidification. Methane is also being transmitted by animals. Animal industries is one of the reason for greenhouse gas emission worlwide that has an effect of the degeneration of the environment. There is a significant increase in water pollution, air pollution, greenhouse gases, deforestation, global warming, erosion, and human obesity because of animal industries.
Briefly compare and contrast osteoarthritis and rheumatoid arthritis. Include clear compare and contrast sections, not only defining the disorders.
Osteoarthritis and rheumatoid arthritis are both forms of inflammation of the joints in the body.
Osteoarthritis differs from rheumatoid arthritis in that osteoarthritis occurs as a result of the wearing away of the cartilage at the joints whereas rheumatoid arthritis occurs as a result of an autoimmune response where the immune system of an individual attacks the tissues around the joints resulting in inflammation.
What is arthritis?Arthritis is a condition in which there is inflammation of the joints resulting in pain and difficulty in walking.
Two forms of arthritis are:
osteoarthritis andrheumatoid arthritis.Osteoarthritis is due to the wearing away of tissue around the bone whereas rheumatoid arthritis occurs when the immune system reacts against the joint tissues.
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Will give you brainliest ASAP
question 1
Question
How does diffusion help a cell maintain homeostasis?
Responses
A It lets the cell know when it needs to produce more energy.
B It helps the cell expel excess waste.
C .It helps the cell obtain and break down food for energy.
D It helps maintain an equilibrium of particles inside and outside a cell.
Answer:
D It helps maintain an equilibrium of particles inside and outside a cell.
Explanation:
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True story! In some lakes and reservoirs, anglers fish a lot for bass. The fish in these lakes are said to be "heavily pressured."Bass that get caught may be kept for food or trophies, or even if they are released, they may be stressed or injured by the experience. Sometimes males that get caught will abandon their nests, which often causes their eggs or offspring to be eaten.The chance that a bass will get caught is partly a result of genetically based personality differences among the fish: "bold" fish are curious and bite almost anything that moves, including fishing lures. "Shy" fish are much less likely to investigate or bite strange objects.Which personality is favored by heavy fishing?Group of answer choicesThe bold, aggressive personality type works better under heavy fishing pressure. These fish will take over in a "heavily pressured" lake and will become the norm.The shy personality type works better under heavy fishing pressure. Over time the bass in a "heavily pressured" lake will tend to become more shy and harder to catch.The personality of a fish doesn't affect its survival. There is no selection at work in this example.
We must remember that many conditions work together to exert a selective pressure and not only a single trait determines this, nonetheless, in the present example, but we can also see that those that are bold easily can bite the bait, so makes them vulnerable to fishing even if they support better stress, meanwhile those shy are more elusive and even if they do no deal well with stress are harder to catch and more careful so, the best answer is the second option.
In early 2016, the United Nations released a report on the biodiversity of pollinators around the world. According to the report, two out of five species of invertebrate pollinators (primarilybees, but also butterflies and other insects) now face extinction, and one in six of the vertebrate pollinators (birds) do as well. Four causes have been identified for the loss of biodiversity:loss of basic habitat, simplification of the landscape to promote single crops, indiscriminate use of pesticides, and the urbanization of landscapes. Which of the following activities would helprestore pollinator populations in the United States?A.Requiring farmers to produce wheat instead of corn or potatoesB.Encouraging farmers to enhance their farms by planting flowering hedgerows and natural nesting sites for pollinatorsC.Making it illegal to produce or sell honey products within the United StatesD.Requiring farmers to use pesticides all year long, not just when flowers are blooming
The correct option is B. Encouraging farmers to enhance their farms by planting flowering hedgerows and natural nesting sites for pollinators. Flowers could represent refugees to pollinators and insects in general, which could mitigate the adverse effects they are experiencing.
What other functions are carried out by the cerebellum?
The cerebellum is primarily responsible for muscle control, including balance and movement. It also plays a role in other cognitive functions such as language processing and memory.
What is the cerebellum?
The lower back is where the cerebellum, a component of the brain, is situated. Up to 80% of all neurons are found in the brain, despite the fact that it only comprises roughly 10% of the brain's total weight.
The cerebellum carries out a variety of activities related to movement and coordination, such as:
Changes in balance and movement can be recognized by specialized sensors in the cerebellum. It sends impulses that cause the body to adjust and move.
The majority of physiological actions need the coordination of multiple muscle groups. The cerebellum organizes muscular actions to enable smooth body movement.
The cerebellum synchronizes eye movements.
The cerebellum helps the body acquire movements that need repetition and modification. For instance, the cerebellum plays a role in learning how to play an instrument or ride a bike.
The cerebellum is thought to process language and mood as part of thought. These functions' outcomes have not yet been properly investigated.
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What would be a probable blood sugar level for a person B at 3.5 hours
Answer: 212.5 ml/L
Explanation:
What would be a probable blood sugar level for person B at 3.5 hours? 212.5 ml/L 9.
Which of the following is a chart in which all the chromosomes from a cell are sorted into theirhomologous pairs? It is a picture of matched chromosomes, arranged according to size and used toidentify the number and types of chromosomes in an individual organism.
The answer is Karyotype. By definition, the karyotype is a test that looks at the shape, size, and number of a person's chromosomes.
The other options are incorrect because:
Diploid means having two complete sets of chromosomes from each of the parents.
Homologous could be a gene that is inherited by a common ancestor.
Klinefelter refers to a genetic condition where a boy is born with an extra X chromosome.
Which muscle is the woman using to lift the ball over her head?
The muscles a woman uses to lift the ball over her head are the deltoid muscles.
The shoulder, a ball-and-socket joint that joins your arm to your body's trunk, is where one finds their deltoid muscles. Someone can move their arms in various directions with the use of their deltoid muscles. Additionally, they safeguard and support the shoulder joint. The deltoid muscle's primary job is to move the shoulder joint and humerus at the same time.
An insertion point is a location where a muscle joins a bone. The anterior, lateral, and posterior deltoid heads are the three. They each have a unique insertion place. They enable the upper arm to move freely and stabilize the shoulder joint at the same time.
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HELP!!!!!!!!Calculating the average atomic mass from Isotope data
The relative atomic mass of the elements are as follows:
Sulfur = 32.054 amuChlorine = 35.46What is the relative atomic mass of elements?The relative atomic mass of an element is the sum of the product of the isotopic masses of the isotopes of an element and their relative abundances.
The relative atomic mass of an element is calculated as follows:
Relative atomic mass = sum of (isotopic mass * relative abundance) of all the isotopes of the element.
The relative atomic mass of sulfur is calculated below:
Relative atomic mass = (32.95 * 0.0075) + (31.972 * 0.950) + (33.967 * 0.042) + (36.01435 * 0.0002)
Relative atomic mass = 32.054 amu
The relative atomic mass of chlorine is calculated below:
Relative atomic mass = (34.97 * 0.755) + (36.97 * 0.245)
Relative atomic mass = 35.46
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environmental benefits such as clean air to breathe, clean water to drink, and fertile soil in which to grow crops, are known as ___________________________________________________________.
Answer: Ecosystem services
 Please HELP!!!?! Describe competitive and noncompetitive in inhibitors describe how mutations can lead to resistance with non-competitive inhibitors
Answer:
The competitive inhibitor binds to the active site and prevents the substrate from binding there. The noncompetitive inhibitor binds to a different site on the enzyme; it doesn't block substrate binding, but it causes other changes in the enzyme so that it can no longer catalyze the reaction efficiently.
What different types of DNA can be found in bacteria?
(Molecular biology)
Please help!! Thanks.
The different types of DNA that can be found in bacteria are:
the plasmid DNA genomic DNAUnderstanding the DNA in bacteria.It follows that the DNA is one of the types of nucleic acid found in the nucleus of living cells or organisms. In the case of bacteria, the genomic DNA found in them structurally a single strand of DNA molecule with a lot of base pairs.
In addition to this, the plasmid DNA is another very common DNA found in most bacteria cells. These plasmid DNA structurally contains smaller circular molecules of DNA.
Bacteria are simple, microscope, primitive living organisms which can be found in water, soil, on air and even also inside living organisms. They are single celled organism with cell walls but no nucleus or organelles.
So therefore, the plasmid DNA and genomic DNA are the best two different types of DNA that can be found in bacteria.
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C -> D is coupled with the reaction ATP->ADP. Based on this information the reaction C->D is _____.
A->B->C->D->E
a. spontaneous
b. endergonic
c. it cannot be determined from the information given
d. exergonic
Based on the information given, the reaction C->D is endergonic.
What are endergonic reactions?Endergonic reactions are chemical reactions that are driven by energy. In other words, they are reactions that consume energy in order to take place. This energy is usually in the form of heat.
Endergonic reactions are unique from exergonic reactions. The latter does not consume energy in order to take place, rather they release energy. Similar to endergonic reactions, the energy is also usually released in the form of heat.
The reaction: ATP -> ADP is known as ATP hydrolysis. When it happens, the energy in one of the phosphate groups in ATP is released. This energy is utilized to drive reactions that require energy.
Thus, if C->D requires that an ATP molecule is hydrolyzed, it means the reaction requires energy. The energy released from the hydrolysis of ATP is what is used to drive the reaction.
Thus, C->D is an endergonic reaction.
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Put a check mark on each check points that corresponds to its function.
Cell cycle
There are 4 checkpoints given in different phases of the cell cycle:
G0: Resting state. Given only when the cell is not prepared to divide. It takes place at the end of the G1 phase.
G1 checkpoint: It takes place in the same moment as the G0, this is a check for nutrients, growth factors (molecular signs), and DNA integrity.
G2 checkpoint: It takes place at the end of the G2 phase, to check if the cell size is correct and the DNA replication was correctly done.
Metaphase checkpoint: At the end of the metaphase. Here is checked the chromosome spindle attachment and chromosome alignment to the equatorial plate.
Which of the following is an accurate statement about the microcentrifuges we use in class?
A. The ONLY use is to pellet cellular debris
B. All of the options are correct
C. You must close both the internal and external lids
D. All of the centrifuge tubes must be on the same side of the rotor
The statement you must close both the internal and external lids is correct about the use of microcentrifuges that we can use in class (Option C).
What is a microcentrifuge?A microcentrifuge is a tool used in molecular biology laboratories to separate biological particles in function of their density and or sedimentation coefficient, which is achieved by reaching many thousands of revolutions per minute (rpm), which contain two lids that need to be closed before to use.
Therefore, with this information, we can conclude that microcentrifuges can be used to separate substances and has two different lids.
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Identify the cell structure/part indicated at number 2 and 3.
In this diagram, we see the representation of a plant cell, characterized by having a cell wall, chloroplasts, and a large vacuole.
In this image, number 2 is indicating the nucleus, which contains the genetic material; while number 3 indicates the chloroplasts, which is where photosynthesis takes place.
So, number 2 is the nucleus, and number 3 is the chloroplast.
Write five sentences distinguishing between a biome and an ecosystem.
Answer:
The Biome is a variety of ecosystems and covers a huge geographical area.
Biome involves climatic factors such as snow, ice, temperature, and rainfall.Latitude impacts the biomes.Biomes include numerous ecosystems.Examples: Grasslands, deserts, tropical rainforests, tundra, taiga, and coniferous forests.The Ecosystem is a relationship between nonliving and living components of the earth.
The ecosystem is not involved in climatic factors.The ecosystem is not impacted by latitude.The ecosystem includes biotic and abiotic components.Examples: aquatic, deserts, coral reefs, freshwater, and hydrothermal vents.
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What is one criticism of the drive-reduction theory?
Question 12 options:
It doesn’t account for a person’s need for love and acceptance.
It explains too little about a person’s spiritual needs.
It doesn’t explain why a person’s behavior increases discomfort.
It doesn’t put enough emphasis on mental images.
The one criticism of the drive-reduction theory is It doesn’t explain why a person’s behavior increases discomfort.
What is the drive-reduction theory?Drive reduction theory is a major behaviorist theory of learning that posits that organisms are motivated to reduce drives to maintain homeostasis.
The Drive reduction theory was developed by Clark Hull in 1943. The theory works as an internal stimulus that motivates an individual to sate the drive. Clark Hull was interested in applying mathematical formulas to psychology, and it is simple to see how this works with the drive reduction theory.
In conclusion, the drive reduction theory could not account for the reason why a person's behavior decreases discomfort.
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Can someone help me please
Answer:
1. Coarse
2.Fine focus
3.Light
4.Arm, Base
5.Revolving nosepiece
6. 500x