Based solely on random assortment, how many possible different genetic combinations exist: (a) when a human egg is produced by meiosis? when a human sperm is produced by meiosis?

Cellular (aerobic) respiration takes place in the presence of and with the use of the following: oxygen.

Cellular respiration is the process that converts stored food or glucose into energy called ATP with carbon dioxide and H2O as byproducts. Cellular respiration is either aerobic or anaerobic respiration.

Thus, Cellular (aerobic) respiration takes place in the presence of and with the use of the following: oxygen.

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Answer:

Organisms use energy in two steps:

Organisms harness the chemical energy of the food and convert it into more usable for that is, ATP. The set of chemical reactions involved in this process is termed as cellular respiration. It may include glycolysis, Krebs cycle, electron transport chain, oxidative phosphorylation.

Organisms use the energy associated with ATP through a hydrolysis reaction. The hydrolysis of ATP releases ADP, Pi,  and energy. ADP is further hydrolyzed to produce AMP, Pi, and energy.

Answer:

The correct answer is option B. "The car is speeding up in the same direction as it traveling".

Explanation:

A positive acceleration is defined as change of velocity upwards the direction that the object has taken. Therefore, a car having a positive acceleration means that the car is speeding up in the same direction as it traveling. Basically, after a positive acceleration, the car is traveling faster in the same direction that it was before.

Answer:

Release of adrenaline by the adrenal glands.

Explanation:

Adrenaline hormone also known as epinephrine is an important part of sympathetic nervous system. It is released from adrenal medulla through a sequence of events in a situation of "fight or flight" or we can say in a life threatening situation. This hormone causes our muscles to perform vigorous activities so that body could respond accordingly. Chemically adrenaline hormone is synthesized by using "tyrosine" as a precursor which after a series of enzymatic actions gets converted into L-dopa and then dopamine then nor-adrenaline and finally into adrenaline.

 B. Water moving out of plant cells into the surrounding environment is the cause of the plants death in flooded areas in New Orleans in 2005 because of the hurricane Katrina. Since the floodwater has a salt concentration that penetrates into the plant cells.

The plants in the flooded areas of New Orleans died after Hurricane Katrina in 2005 due to the high salt concentration in the floodwaters. This caused water to move out of the plant cells (plasmolysis) leading to dehydration and death.

The death of the plants in the flooded areas of New Orleans after Hurricane Katrina in 2005 was most likely due to B: Water moving out of plant cells into the surrounding environment. This effect is largely related to the concept of osmosis. Essentially, the high salt concentration in the floodwaters created a hypertonic environment, causing the water in the plant cells to move out towards the saltier environment in a bid to balance the concentration. This process, known as plasmolysis, results in dehydration and ultimately the death of the plant.

Furthermore, some plant species, known as halophytes, can tolerate such salty conditions due to special adaptations. However, the majority of the plants in the flood-hit areas of New Orleans were not halophytic, thus could not withstand the high salt concentrations. This demonstrates that while some organisms can well regulate the effects of osmosis, many cannot when faced with extreme conditions.

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equatorial Pacific Ocean

The correct answer is equatorial pacific ocean.

Equatorial pacific ocean is a body of water is home to the ENSO cycle.

ENSO cycle refers to southern Oscillation or El Nino. The interaction which occurs between ocean and atmosphere in tropical pacific results to periodic differences.

The three phases of ENSO include La nina, El Nino and neutral phase. ENSO lasts for nine to twelve months. They mostly develop on March to June and weaken on May to July.

ENSO is caused when atmospheric pressure across the pacific of equatorial.

Answer: d. Tsunami

A tsunami is a natural disaster in which high speed waves generate in the ocean due to the gravitational force exerted by the moon on the water of the ocean resulting in flood. But these may also occur because of the underwater earthquakes, landslides and volcanic eruptions. All these events causes changes in the sea floor.

Therefore, tsunami will occur when an earthquake causes a sudden vertical change in the sea floor.  

The Answer is

D. Tt and Tt

The main hazards from a quiet volcanic eruption are volcanic gases and lava flows. These can have substantial long-term effects on the atmosphere, climate, and terrestrial landscapes. Explosive phenomena like geysers and pyroclastic flows are more characteristic of violent eruptions.

The main hazard from a quiet volcanic eruption is not geysers or pyroclastic flows, as these usually occur in explosive eruptions. Instead, the primary dangers are a. volcanic gases and b. lava flows. Volcanic gases, such as water vapor, carbon dioxide, and sulfur dioxide, are released massive quantities during eruptions. These gases can have long-term effects on the atmosphere and climate. Furthermore, even quiet eruptions can produce enormous amounts of lava. Lava flows can spread rapidly from long cracks during an eruption, forming vast lava plains, like those that exist on the Moon and some of the other terrestrial planets. These flows can cover large areas, causing significant harm to human settlements and ecosystems.

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The main organelles linked with cell locomotion are flagella and cilia. They are found in both eukaryotic and prokaryotic cells, with structural differences. Other contributing organelles include pseudopodia in amoeba and flagellum in Euglena.

The primary organelles associated with locomotion, or movement within cells, are flagella and cilia. These organelles are found in both prokaryotic and eukaryotic cells, though their structures are distinct. In eukaryotic cells, the flagellum resembles a flexible whip and is made up of nine parallel pairs of microtubules surrounding two central ones, which are arranged in a 9+2 array. The cilia are similar to flagella but shorter and can be used for locomotion, feeding, or the movement of extracellular particles.

Other organelles that contribute to locomotion include pseudopodia in amoeba, which are lobe-like extensions used to anchor the cell to a surface and pull it forward, and the whip-like flagellum in Euglena.

It's important to note that these organelles not only enable the cells to move independently, they also help maintain the cell's shape, secure other organelles in specific positions, and allow the cytoplasm and vesicles to move within the cell.

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A bone marrow transplant is coded in the ICD-10-PCS with a specific seven-character alphanumeric code, which should be referred to in the ICD-10-PCS manual. The code varies depending on procedure details but ensures matching of donor and recipient to avoid GVHD.

The ICD-10-PCS (International Classification of Diseases, Tenth Revision, Procedure Coding System) code for a bone marrow transplant taken from a donor and infused through the central vein involves a specific code that identifies the type of procedure. During the procedure, it is crucial to have a matching donor to prevent tissue rejection and minimize the risk of Graft-versus-Host Disease (GVHD). After a matching donor is found, the patient's own bone marrow is destroyed through radiation and/or chemotherapy, followed by the intravenous infusion of donor bone marrow stem cells. These stem cells then colonize the recipient's bone marrow to restore its function.

Based on the information provided, it seems like the index terms provided do not directly correlate with a specific ICD-10-PCS code. For the purposes of coding, one would need to refer to the ICD-10-PCS code manual to locate the precise procedure code, which is typically a seven-character alphanumeric code. The provided terms such as bone marrow transplant (792, 794) could refer to the index of a coding manual but not the exact code itself that should be used.

The lancelets consist of approximately 32 types of fish-like maritime chordates in the order of Amphioxiformes, with an international dissemination in tropical seas and low temperate, they are commonly found half-buried in sand.  The lancelets show 4 of the major characteristics of the phylum chordata.

Final answer:

The hypothalamus in the brain regulates hunger and thirst by receiving neural and hormonal signals, which indicate when to eat and when you are full.

Explanation:

The part of the brain that regulates hunger and thirst is the hypothalamus. It functions as the main control center, integrating various neural and hormonal responses from the digestive system. The hypothalamus contains neural circuits that respond to chemical signals indicating nutrient levels in the blood, as well as mechanical signals from the stomach regarding its fullness. These responses determine whether we feel the need to eat or the sensation of satiety. Additionally, fat tissue produces the hormone leptin, which communicates with the hypothalamus to help regulate food intake and energy balance.

The non-recombinant gametes are AB and ab which are found in the parents whereas aB and Ab are recombinant in nature as they are absent in parent genotype.

Further explanation:

The true-breeding or pure-breeding represents the parents that are homozygous in nature and will pass on the specific trait to the progeny as they contain either recessive or dominant alleles but not both. The parents heterozygous for a trait will not be able to produce exactly the same phenotype in the offspring due to the presence of both types of alleles.  

The genotype of pure-breeding double-mutant can be depicted as ‘aabb’ for apricot and blunt while the wild-type genotypes can be considered ‘AABB’. The cross between the mutant and wild type genotypes would result in the progeny with only ‘AaBb’ genotype.

Parent:   aabb × AABB

Filial 1 (F1) generation: AaBb

The F1 hybrids are then test crossed with double-mutant line and result as follows:

AaBb × aabb

 F2 generation:

The genotypes obtained in the F2 generation are AaBb, Aabb, aaBb, and aabb which have the phenotypes wild-type, wild-type apricot, pale orange-wildtype, and double-mutant, respectively.  

AB, Ab, aB, and ab are the haploid genotypes that were received as gametes from the F1 generation. The gametes Ab and aB are considered recombinant while gametes ab and Ab are said to be non-recombinant because the recombinant gametes are not found in the parents while the non-recombinant ones have been transferred from the parents.

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Answer details:

Grade: College Biology

Subject: Genetics

Chapter: Gene Interactions

Keywords:

Gametes, recombinant gametes, non-recombinant gametes, pure-breeding, true-breeding, F1 generation, F2 generation, genotypes, phenotypes, recessive allele, dominant allele, wild-type, mutant.

The question refers to an enzyme from the digestive tract of a 'mondoni', which could be a mistake or misinterpretation. In general, organisms like 'mondoni', if they exist, would have enzymes like amylase, lipase, and protease in their digestive tract to break down food for absorption.

The question doesn't specify a particular enzyme related to the digestive tract of the 'mondoni,' which appears to be a misspelling or misunderstanding. However, generally speaking, organisms have multiple enzymes that function in the digestive process. Enzymes like amylase, lipase, and protease work to break down carbohydrates, fats, and proteins respectively into their smaller constituent parts for absorption and utilization in the body. Amylase breaks starches into simple sugars, lipase splits fats into glycerol and fatty acids, while proteases break proteins into amino acids. If the 'mondoni' refers to a specific organism, a further and more accurate answer may require additional information about the organism.

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Body Dysmorphic Disorder (BDD) leads to severe psychosocial effects such as depression and anxiety, heightened self-consciousness, unhealthy coping mechanisms like substance abuse, and stress particularly related to puberty.

Body Dysmorphic Disorder (BDD) has profound psycho-social effects on individuals suffering from it. These include negative impacts on interpersonal relationships, mental health, and typical social functioning. Here are some key psychosocial effects of BDD:

It's vital to provide support to individuals with BDD to mitigate these psychosocial effects and promote overall well-being.

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Answer: A. Wind energy doesn't pollute the air.

Explanation:

Wind energy is a renewable source of energy due to abundance of wind in the atmosphere. The wind energy is harnessed by high speed wind currents used to run the wind turbine. The turbine convert the wind energy into electrical energy.

The wind energy does not generate pollutants like the energy generated by conventional fuels like fossil fuels.

Answer: The type of transport that amoebas use for large molecules is endocytosis and exocytosis.

Explanation: Endo- and exocytosis are two types of active transport. In both of these forms of transport, small spheres of membrane called vesicles are used to move molecules.