A manufacturing company dumps its wastes into a nearby pond. One of the wastes is found to paralyze the contractile vacuoles of certain protists. A biologist looking at individual samples of these organisms taken from the pond would find that they.

Answer:

Iron, manganese, selenium, and calcium all provide  day-to-day nutrients that  body needs in order to  function. Foods that are full of micronutrients  can help strengthen cells, fight against harmful viruses, and boost the  immune system.

If we add more carbonic acid then the equilibrium position would shift to the right

A chemical reaction at equilibrium shifts to the right to offset the change when additional reactants are added. Le Chatelier's principle, which holds that an equilibrium system will respond to a change by moving in a direction that minimizes the influence of that change, governs this movement.

We are adding more carbonic acid which is a reactant thus the equilibrium would shift to the right.

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Answer:

1. Xét nghiệm yếu tố đông máu để làm gì?

Để đánh giá khả năng đông máu như thế nào và quá trình đông máu kéo dài trong thời gian bao lâu, các bác sĩ sẽ tiến hành xét nghiệm các yếu tố đông máu.

Quá trình đông máu sẽ bảo vệ cơ thể bạn khi bị chảy máu. Tuy nhiên, nếu một cục máu đông hình thành trong tĩnh mạch bình thường thì đây là điều hết sức nguy hiểm vì có thể khiến cho dòng máu bị chặn đến tim, não, phổi.

Khi thực hiện xét nghiệm các yếu tố đông máu, sẽ biết được nguy cơ bạn bị chảy máu quá nhiều khi bị thương hay không hoặc có nguy cơ bị đột quỵ không.

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2. Các yếu tố đông máu gồm những gì?

Fibrinogen

Fibrinogen là yếu tố ảnh hưởng lớn đến quá trình đông máu

Sau đây là các yếu tố ảnh hưởng đến quá trình đông máu:

I - Fibrinogen: Fibrinogen là huyết tương có trọng lượng phân tử là 340.000, hòa tan được. Yếu tố này có mặt trong huyết tương với nồng độ là từ 100-700mg/ 100mL. Đa số Fibrinogen được tạo ra ở gan, vì thế đối với những bệnh nhân bị bệnh gan thì lượng Fibrinogen giảm trong máu tuần hoàn, sự đông máu bị ngăn cản.

II- Prothrombin: Prothrombin là protein huyết tương có trọng lượng phân tử là 68.700, có mặt trong huyết tương với nồng độ là 15mg/100mL. Gan sản xuất Prothrombin liên tục, chính vì vậy nếu gan bị suy yếu, lượng prothrombin sẽ giảm, gây ức chế sự đông máu.

III- Thromboplastin mô: Yếu tố này tham gia vào cơ chế đông máu ngoại sinh, thay thế phospholipid tiểu cầu và các yếu tố huyết tương. Bên cạnh đó, thromboplastin còn có tác dụng chống nhiễm khuẩn.

IV- Ca++: Quá trình đông máu không thể không có mặt của loại ion này.

V- Proaccelerin: Khi có nhiều ion Ca++ thì yếu tố này mất hoạt tính. Khi không có proaccelerin, người ta điều chế huyết tương bằng cách để lâu huyết tương lấy từ máu chống đông với oxalat.

VII- Proconvertin: Trọng lượng phân tử của yếu tố này là 60.000. Hoạt tính của yếu tố này trong huyết tương sẽ bị giữ lại trên màng lọc amiang;

VIII- Antihemophilic A: Để tổng hợp yếu tố này, phụ thuộc vào rất nhiều gen trong các nhiễm sắc thể khác nhau. Thường thì antihemophilic được tổng hợp chủ yếu từ gan, lá lách và hệ thống võng nội mô. Khi thiếu ion Ca++ thì yếu tố này mất hoạt tính. Đây là yếu tố chống huyết hữu B;

IX- Antihemophilic B: Chống huyết hữu A.

X- Stuart: Stuart có trong huyết tương, ở dưới dạng không hoạt động. Trong quá trình đông máu nội sinh có sự tham gia của yếu tố này. Khi cho thromboplastin mô vào quá trình đông máu ngoại sinh, sẽ không còn yếu tố stuart.

XI- Plasma Thromboplastin Antecedent (PTA): Quá trình khởi phát đông máu nội sinh không thể thiếu yếu tố PTA.

XII- Hageman: Động lực để tạo thành một loạt phản ứng dẫn đến đông máu là sự tiếp xúc giữa yếu tố XII với mặt trong mạch máu tổn thương cùng sự có mặt của phospholipid tiểu cầu. Bên cạnh chức năng hoạt hóa hệ đông máu, Hageman còn hoạt hóa hệ đông máu, hệ bổ thể và hệ chống đông.

XIII - Fibrin Stabilizing Factor ( FSF): yếu tố này có hoạt tính bền vững trong huyết tương, ổn định fibrin.

Explanation:

Answer

1.10 X 10^24

Explanation:

Answer:

Answer: Four sperm cells.  

Explanation:

Explanation: Meiosis is is a cell division process that generates four haploid cells (gametes) from a single diploid germline cell.

In the drosophila fruit fly, four haploid sperm cells are produced from a single original parent cell. The germ cells undergo meiosis to form gametes. Thus, the correct option is C.

Meiosis is the reductional division through which four daughter cells are produced from a single parent cell. The gametes are produced from meiosis. The gametes produced from a diploid cell are haploid in the number of chromosomes in cells. Both male and female gametes undergo fertilization to form diploid zygote.

Meiosis is divided into two parts- Meiosis I and Meiosis II. Both the parts comprises of four phases- Prophase, Metaphase, Anaphase, and Telophase. The chromatids undergo crossing over with non-sister chromatids to form recombination in cells.

Therefore, the correct option is C.

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I could try help, what is the answer you are looking for?

The name used to describe a cross between two varieties of a plant used to create a new variety is hybridization. Hybridization is a process by which two different varieties or species of the same plant are crossed to produce a new variety of the plant, which has the desired characteristics of both the parent varieties.

The hybridized plant has features different from that of the parent plants and can be used for increasing crop yield, improving the quality of a crop, or for creating new varieties. The process of hybridization can be done naturally through pollination, or artificially through genetic engineering techniques.

While experimenting with hybridization, one must ensure that the two parent varieties are of the same species, and not from distant species, as this will result in sterility of the offspring. Hybridization is an important procedure for commercial production, as it is responsible for producing a multitude of modern varieties of crops.

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In this experiment the dependent variable is the number of mosquito bites, the independent variable is the type of repellent the control group is the population that is not sprayed.

The dependent variable is those that changes in the experiment, while the independent variable is not modified along the experimental procedure. Moreover, the control group is the sample in which the treatment isn't applied.

In conclusion, in this experiment the dependent variable is the number of mosquito bites, the independent variable is the type of repellent the control group is the population that is not sprayed.

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Explanation:

diffusion, osmosis and active transport

Answer:

newborn infants. Bioassayable andimmunoassayable renin activities were elevated during the first six days after delivery. At 3 to 6 weeks of age, although elevated above that in adult control subjects, renin activity was lower than in the first postnatal week. Cord blood renin values were greater than those for maternal renin during labor. Renin substrate concentration was elevated in infants less than six days of age and also in 3- to 6-week-old infants. The enhanced activity of the renin-angiotensin system may contribute to the increased renal vascular resistance and the altered renal hemodynamics that occur in the newborn infant.

Answer:

It's the same so don't complain OK it is correct so don't worry about it as much ok

If a cell converted all of its NAD+ into NADH, glycolysis would stop due to the lack of a reactant (option c). NAD+ is an essential electron carrier and plays a critical role in cellular respiration.

During glycolysis, NAD+ is reduced to NADH, enabling the process to continue and generate ATP. Without sufficient NAD+ to accept electrons, glycolysis cannot proceed, ultimately leading to a halt in ATP production.

Respiration would not completely stop (option a), but it would be significantly impaired, as NAD+ is necessary for both glycolysis and the Krebs cycle. Energy would not be wasted by glycolysis (option b), as the process cannot continue without NAD+.

Fermentation would not replace glycolysis in generating ATP (option d), as it serves as an alternative pathway to regenerate NAD+ in anaerobic conditions, but it would not function if all NAD+ is converted to NADH.

Finally, the cell would not stop glycolysis due to sufficient energy storage in NADH (option e), as glycolysis and other metabolic processes require a constant supply of NAD+ to function efficiently. Hence, c is the correct option.

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Growing food in ways which minimize water and fertilizer use and protect biodiversity while enhancing farmers' livelihoods is an example of sustainable sourcing.

Sustainable sourcing is the practice of procuring goods and services in a manner that preserves and improves the natural environment, social welfare, and economic well-being of current and future generations. The process of sustainable sourcing ensures that the procurement of products and services is completed in a way that minimizes any negative impact on the environment.

Additionally, sustainable sourcing also seeks to support social and economic development and protect the human rights of all parties involved. The use of sustainable sourcing practices is vital for addressing some of the most pressing environmental and social challenges facing the world today, including deforestation, greenhouse gas emissions, and water scarcity. It is also crucial for ensuring the availability of resources for future generations.

Therefore, sustainable sourcing is a critical component of many companies' corporate social responsibility (CSR) programs.

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Answer:

Mounting evidence suggests activities such as commercial fishing, angling and hunting, along with the use of pesticides and antibiotics, are leading to dramatic evolutionary changes.

Explanation:

please mark my answer as the brainliast answer

The enzymatic activity primarily responsible for the proofreading step of DNA replication is 3' to 5' exonuclease activity, option D is correct.

During DNA replication, DNA polymerases add nucleotides to the growing DNA strand in the 5' to 3' direction. However, occasionally incorrect nucleotides can be incorporated. To ensure high fidelity in DNA replication, DNA polymerases possess an exonuclease activity that allows them to remove the incorrectly incorporated nucleotides from the 3' end of the growing strand.

This exonuclease activity functions by cleaving the phosphodiester bond between the incorrect nucleotide and the preceding nucleotide, effectively excising the incorrect base. By removing the mismatched nucleotide, DNA polymerases can replace it with the correct nucleotide, thereby increasing the accuracy of DNA replication, option D is correct.

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Answer:OMS

Explanation:...

Answer:

Clouds lack any characteristics of life. Clouds can not breathe, eat, produce their own food, grow, or reproduce. Hope this helps :)

Answer:

central nervous system

Explanation:

The central nervous system consists of the brain and spinal cord. The brain plays a central role in the control of most bodily functions, including awareness, movements, sensations, thoughts, speech, and memory.

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Cellular respiration is a very important process for organisms because it is from it that part of the energy necessary for survival is generated.

In respiration, we consume oxygen and glucose and form carbon dioxide, energy, and water as products.

Therefore, we can say that the reactants of cellular respiration are oxygen and glucose. Therefore, option "D" is the answer.

The correct order of the molecules involved in protein synthesis is as follows;

What is protein synthesis?

Protein synthesis, also known as protein biosynthesis, is the process by which proteins are made from the information stored in DNA molecules through the mRNA at the ribosomes.

It is a fundamental biological activity that takes place inside cells to counteract the loss of cellular proteins (via export or degradation) by producing new proteins. As structural proteins, hormones, or enzymes, proteins serve a variety of important biological purposes.

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Answer:

The activity of Bromine will reduce

Explanation:

Bromine is found in pineapple stem with pH range of 3.5- 5.2 this implies that the environment where bromine is found is acidic hence when taken to a product whose pH is 11 which is basic then its performance will be low because its can only function well in an acidic medium.

pH ranges tell whether a substance is acidic, basic or neural.

Acid range from 3.5-6

7- neutral

8 above is basic

This is about knowing the behaviour of some elements in different PH Values.

The activity of bromelain will decrease in a product with a pH of 11. .

We can now conclude that the activity of bromelain will decrease in a product that has a PH of 11.

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Answer:

Animal cells are primarily in spheres or oblong shapes such as ovals. Plant cells are usually tubes or squares/rectangles. I have no idea what cells go into pyramids.

Explanation:

The  governments of mixed economies, like India and China, decided to give up some of their control (command economy element) and let privately owned businesses make more decisions (market economy element because resources are utilized in the best possible manner in the Mixed Economic System.

A mixed economy is variously described  as an economic system blending elements of a market economy with elements of a planned economy, markets with state interventionism, or private enterprise with public enterprise.

The Central Government makes economic planning for optimal  usage of the resources thereby shortage is avoided leading to productive efficiency  and cyclical fluctuations are eliminated.

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Answer:

covalent bond.

Answer:

B

Explanation:

Answer:

Until attachment to the uterus, the developing organism is on its own. That means it needs to supply its own energy, so the cytoplasm of the human egg cell contains many energy-generating factories called mitochondria. Those mitochondria come only from the mother.

a. The ovum contains a large quantity of cytoplasm, which contains nutrients for the first days of development after fertilization. The cytoplasm of the ovum contains over 140 000 mitochondria to produce ATP required for growth.

Explanation:

Answer:

Claim: Increasing the amount of foliage does not lead to an increase in the final number of slinquettes with red, short fur.

Evidence: The data table shows the results of eight trials where the amount of foliage was manipulated. In all trials, regardless of the amount of foliage (whether "lots" or "some"), the final number of slinquettes with red, short fur remained at 0. There were no instances where increasing the foliage resulted in an increase in the population of slinquettes with red, short fur.

Reasoning: The evidence from the data table supports the claim that increasing the amount of foliage does not lead to an increase in the final number of slinquettes with red, short fur. This suggests that the presence or absence of foliage does not have a significant impact on the population of slinquettes with red, short fur.

Based on the provided data, it is reasonable to infer that factors other than foliage, such as temperature, fur color mutation, and fur length mutation, may have a stronger influence on the population dynamics of slinquettes. These factors could be responsible for the observed patterns in the data.

It's important to note that the reasoning provided here is based solely on the given data and analysis. In a real scientific investigation, additional factors, experimental controls, and statistical analysis would be required to draw definitive conclusions.

Answer:

diamond and corundum

Explanation:

diamond has a hardness of 10 and corundum has a hardness of 9, both are higher than 8

Answer:

D: nucleic acids - nucleotides

Explanation:

The correct monomer for carbohydrates would be monosaccharides

protein - amino acids

and lipid - fatty acids

The choanocyte is a flagellated cell that sweeps water through a sponge's body.

Choanocytes( or' collar- cells'), are grouped within chambers. They're the main' pumping stations' for sponger survival. These collar cells have a bitsy central hair- suchlike scourge( flagellum) that laboriously beats to produce a water current. 

The abecedarian element of the suite of cells in a sponger body is the choanocyte. Choanocytes are the cells that line the spongocoel and conduits of poriferans. They retain flagella and the collaborative movement of flagella pollutants the nutrients out from the water. 

Choanocytes are specialized cells that have a single flagellum girdled by means of a net- suchlike collar of microvilli. Choanocytes join together to produce the choanoderm, where they perform their main functions. The first is to produce a inflow of water and the second is to capture food particulars as they pass through these cells. 

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