What determines which base is to be added to an rna strand during transcription?

Answer:

Lysosomes

Explanation:

Vocal pitch is influenced by vocal fold size, with boys and girls adjusting their speech to fit gender norms. Men have lower voices than women, influenced by both biological and social factors.

Vocal pitch is influenced by the size and weight of vocal folds, with larger folds producing lower pitches. Before puberty, all children's vocal folds are anatomically similar, but boys and girls adjust their speech to fit gender norms.

Men typically have lower voices than women due to their larger vocal folds. Social factors also play a role in how individuals manipulate their voices to align with gender expectations.

Voice disorders can affect children's pitch, loudness, and voice quality, with males more likely to experience such issues. These disorders can stem from various factors, including structural abnormalities and overuse.

Answer:

a

Explanation:

Final answer:

The experiments with rats in mazes showed that rats could learn the layout of the maze without direct rewards, a phenomenon known as latent learning. This learning became apparent through their improved performance once a reward was introduced, demonstrating cognitive mapping abilities.

Explanation:

The experiments conducted by researchers such as Tolman and Blodgett with rats in mazes demonstrate a fundamental concept known as latent learning. This type of learning occurs without any obvious reinforcement or rewards during the learning process. Instead, the subjects - in these cases, rats - develop a cognitive map of their environment, which they can later use to navigate more efficiently once a motivation (such as food) is introduced.

In these experiments, even rats that were not rewarded with food while exploring the maze eventually displayed a quick and accurate ability to run through it once a reward was placed at the end. This rapid improvement wasn't because they learned the maze route at that moment but because they were demonstrating the knowledge they had acquired latently. This effectively highlights the ability of rats to engage in complex cognitive learning processes, similar to other higher-order mammals.

Answer:

Hypochromic, microcytic aneamia is associated with a deficiency of Iron.

Explanation:

The most common cause of microcytic, hypochromic anemia is the Iron Deficiency. Microcytic is a type of anemia where the RBC present will be lesser than the usual count. In hypochromic anemia has decreased red color of the blood.

Iron deficiency may occur due to various reasons such decreased iron in the diet, poor absorption of iron from gut, chronic and acute blood loss, increased requirement for iron during situations like  recovering from surgery or preganacy.

Hypochromic, microcytic anemia can be treated by Iron replacement therapy. In iron replacement therapy 325 mg of ferrous sulphate is taken orally three times a day.  Constipation and Nausea are the side effects of this therapy. The results of this iron replacement therapy can be seen only after 2 months.

Platelets, also known as thrombocytes, are cell fragments derived from megakaryocytes. They are involved in blood clotting and are released into the bloodstream. Thrombopoietin stimulates the production of megakaryoblasts, which mature into megakaryocytes and release platelets.

Platelets are more commonly known as thrombocytes, which are cell fragments rather than complete cells. They are derived from megakaryocytes, which are large cells found in the bone marrow. Thrombopoietin, a glycoprotein, stimulates the production of megakaryoblasts, which then mature into megakaryocytes and release platelets into the bloodstream. Each megakaryocyte can release thousands of platelets during its lifespan.

The relationship between mistletoe and oak trees is parasitic, with the mistletoe benefiting by taking nutrients from the oak and harming it in the process.

The relationship between mistletoe and oak trees is one of parasitism. In this interaction, the mistletoe is the parasite that benefits by absorbing nutrients from the oak tree, which serves as the host and is harmed as a result. The mistletoe derives its nutrients from the oak tree without providing any beneficial return, thus depleting the tree's resources and potentially causing damage. In contrast, a mutualistic relationship would involve both species benefiting in some way, which is not the case with mistletoe and oak trees.

Answer: Chloroplast

Explanation: Chloroplast is the organelle where photosynthesis takes place and glucose is formed. That's why its the kitchen of the cell. Cell wall and cell membrane are the outer coverings of the cell and they protect the cell from outer environmental conditions. Cytoplasm is the inner fluid in which all the organelles are present.

Answer:

Chloroplast

Explanation:

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Placenta Previa

Placenta Previa is a disorder that arises from the implantation and development of the placenta in the lower segment of the uterine. The cause of this disorder is unknown. The three types of placenta previa are complete, partial and marginal previa. The most common symptom of placenta previa is painless bleeding during the third trimester.

Flowering plants or Angiosperms have seeds that are enclosed within an ovary (usually a fruit), while Gymnosperms have no flowers or fruits, and have “naked” seeds.

Both classes:

·         Have differentiation of the sporophyte  (root, stem, and leaves),

·     Produce pollen for fertilization,

·     Seeds bearing plants (belong to the class  known as Spermatophyta),

·     The vascular system,

·     Reduced gametophytic phase.

Animal cells lack a rigid outer structure and burst in hypotonic solutions like tap water, while plant cells have a strong cell wall that prevents lysis and uses a central vacuole to manage water intake, maintaining structural integrity and turgidity.

When an animal cell is placed in tap water, which is a hypotonic solution, it will swell and eventually undergo lysis (bursting) because it lacks a rigid outer structure to prevent over-expansion. In contrast, a plant cell has a rigid cell wall surrounding the plasma membrane, which provides structural support and prevents lysis in hypotonic situations. This cell wall can withstand the increase in water volume up to a certain point, creating turgor pressure within the cell that is beneficial for maintaining the plant's structure. Additionally, plant cells manage excess water using a large central vacuole, which stores water and supports the cell's turgidity.

The main reason a plant cell does not undergo lysis in tap water is due to the relative inelasticity and strength of the plant cell wall, which provides a protective barrier. Moreover, when a plant cell is exposed to a hypertonic environment, it undergoes plasmolysis where the plasma membrane detaches from the cell wall, but unlike an animal cell, the cell wall maintains the plant cell’s structural integrity.

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A bottle of beer with 15 grams of carbohydrate, 0 grams of fat, 1 gram of protein, and 15 grams of alcohol contains approximately 170.6 calories.

The number of calories in a bottle of beer can be calculated by multiplying the grams of each macronutrient by their respective calorie values and then summing them up. In this case, there are 15 grams of carbohydrate and 1 gram of protein, which contribute 4.1 calories per gram. There are also 15 grams of alcohol, which contributes 7 calories per gram. Since the bottle has 0 grams of fat, we don't need to consider its contribution. Therefore, the total calorie content of the beer is:

(15 grams of carbohydrate × 4.1 calories/gram) + (1 gram of protein × 4.1 calories/gram) + (15 grams of alcohol × 7 calories/gram) = 61.5 + 4.1 + 105 = 170.6 calories.

The bottle of beer contains approximately 169  calories.

1. Carbohydrates provide 4 calories per gram, so 15 grams of carbohydrate contribute 15× 4 = 60 calories.

2. Protein also provides 4 calories per gram, so 1 gram of protein contributes 1 × 4 = 4 calories.

3. Alcohol provides 7 calories per gram, so 15 grams of alcohol contribute 15× 7 = 105 calories.

4. Add the calories from carbohydrate, protein, and alcohol together: 60 (carbohydrates) + 4 (protein) + 105 (alcohol) = 169 calories.

5. Since fat content is 0 grams, there are no calories from fat.

6. Therefore, the total calories in the bottle of beer are approximately 169 calories.

Thornscrub has well-illustrated dry and wet seasons, with the majority of the wood plants showing drought deciduousness. Thornscrub is a transitional biome between the tropical and desert forest.  

The thornscrub ecosystem belongs to shrubland. The scrubland, shrubland, brush, scrub, or bush refers to a plant community featured by the vegetation subjugated by shrubs, generally also comprising herbs, grasses, and geophytes. The shrubland may take place either naturally or due to human activity.  

Tracheoesophageal fistula

Tracheoesophageal fistula (TE) is a condition in which an abnormal channel (fistula) connects the trachea to the oesophagus. It is a birth defect and is characterized by extensive salivation with choking, vomiting and cyanosis during feeding. When eating, food substances move through abnormal connection and this can cause other illnesses. From the question given above, Morgan is likely have tracheoesophageal fistula.

Alphaman banegan crawfish has a large flexible tail, four pairs of legs, two large claws, and is a highly prized shellfish all around the world.

Small freshwater crustaceans known as crawfish have a flavor profile that is comparable to that of shrimp and lobster. Approximately 95% of the crawfish eaten in the US comes from Louisiana, although they are enjoyed all over the world, from Nigeria to Sweden.

This common crustacean can be found crawling around in lakes, rivers, and swamps all throughout the world.

Less salty and sweeter than lobster, crab, and shrimp, crawfish meat has a flavor all its own. Cajun seasoning, which imparts the meat with flavors of paprika, cayenne, garlic, oregano, and other ingredients, is frequently used in traditional preparations of crawfish.

Therefore, Alphaman banegan crawfish has a large flexible tail, four pairs of legs, two large claws, and is a highly prized shellfish all around the world.

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