What limits the speed and stamina of endurance athletes? adaptation to low oxygen conditions the ability of their heart and lungs to deliver oxygen at a steady rate muscle strength dehydration

Answer:

c

Explanation:

The acacia tree is a producer that get eaten by the impala

The energy from the tree is given to the impala when it eats the tree

The fish populations living above, below, or at 70 meters might become extinct. Therefore, option (D) is correct.

Nile perch, being hardy fish capable of tolerating oxygen levels as low as 6 mg/L, may still face extreme stress and struggle to survive in an environment with oxygen concentrations below 1 mg/L. Such a drastic decrease in oxygen levels would severely impact the entire ecosystem of the lake, potentially leading to mass mortality and extinction of fish populations across different depths.

This is because oxygen is essential for the survival and respiration of aquatic organisms, and a severe lack of oxygen can have devastating consequences for their health and survival.

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Answer:

cell

Explanation:

is a building block of living things

Answer:

During meiosis 1, the parent cell with double the normal amount of chromosomes, splits into two diploid cells (have enough chromosomes to survive). During meiosis 2, the two diploid cells each split into two haploid cells (have half the amount of chromosomes to survive). Meiosis ends with four haploid cells.

Answer:

Ye its (B) Jada volunteers to help raise funds for the United Nations Children's Fund (UNICEF).

Explanation: From k12 btw and i hope dis helps. LOL :)

The action that illustrates citizen participation in an international organization is Jada volunteers to help raise funds for the United Nations Children's Fund (UNICEF).

An international organization may be defined as commodities designated by formal political consensuses between its members that have the status of international treaties.

Reading, Writing, and Teaching about international organizations do not involve the active participation of citizens in an international organization.

Therefore, the action that illustrates citizen participation in an international organization is Jada volunteers to help raise funds for the United Nations Children's Fund (UNICEF).

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Answer:

Important molecular machines in the synthesis and processing of RNA include ribosomes and spliceosomes. In any case, their capabilities and designs are very unique.

In eukaryotic cells, large RNA-protein complexes called spliceosomes are responsible for removing introns from pre-mRNA molecules. Splicing is the process of removing introns. It involves precisely recognizing and removing intronic sequences, then ligating the exonic sequences to produce mature mRNA. Spliceosomes are a dynamic structure that recognizes specific sequences at the intron-exon boundaries and are made up of five small nuclear ribonucleoprotein particles (snRNPs) and a large number of additional proteins. A ribozyme is an example of a catalytic RNA molecule that can initiate the splicing process. The spliceosome is one such example.

Ribosomes, then again, are sub-atomic machines that are answerable for protein amalgamation in every living organic entity. Each of the two subunits that make up a ribosome contains a mix of RNA and protein molecules.

In conclusion, both ribosomes and spliceosomes are significant RNA and protein-based molecular machines. However, ribosomes are involved in protein synthesis by catalyzing the formation of peptide bonds between amino acids, while spliceosomes are involved in processing pre-mRNA by removing introns and ligating exons.

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According to the passage, the mutation that causes the LP phenotype is most likely located in an enhancer sequence of the lactase gene.

The passage states that the lactase gene has an enhancer sequence that controls its expression in the intestine. The mutation that causes lactase persistence likely affects this enhancer sequence, allowing lactase to continue to be produced into adulthood. This is supported by studies mentioned in the passage that have identified variations in this enhancer sequence among different populations with varying degrees of lactase persistence. Therefore, option C is the most appropriate answer to this question.

Based on the information provided, the mutation that causes the Lactase Persistence (LP) phenotype is most likely located in an enhancer sequence of the lactase gene (option C). This is because enhancer sequences play a role in regulating gene expression, and the LP phenotype is associated with increased lactase production in adults. A mutation in an enhancer sequence could alter the regulation of the lactase gene, leading to the observed phenotype. Options A, B, and D are less likely as they involve different parts of the gene and may not have the same impact on gene regulation and expression.

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Answer:

Cell Membrane- Entrance security- checks who enters and exits the building

Cell Wall- Outside walls of building- protects goods from being stolen

Centrioles- Steel frame and inside walls of building- gives building its shape

Chloroplast- Cafeteria- provides food to feed the workers

Cytoplasm- Floor of the building- where all the action takes place

Golgi Apparatus- Packages- goods that are ready to be sold

Endoplasmic Reticulum- Elevators and Hallways- where people and goods travel

Lysosome- Shredder- breaks down large pieces of trash from creating goods

(the) Mitochondria (is the powerhouse of the cell)- Power generator- provides electricity to run machines

Nucleus- CEO- in charge of all aspects of the company

Ribosome- Secretary- Organizes paperwork to expand the company w/ more franchises

Vacuole- Holding area- storage room holds goods coming into and leaving the company

Vesicle-  Post office- packs and prepares goods to be sold

Answer:

Fight or flight man. The body reacts to center points in our brain that have been trained over a large period of our lives depending on how we respond to these things.

Some people fight and stay, some get scared and run. It's a basic reflex of the human body whether you felt scared or not, you've trained your mind and body to react that way.

Answer: Lactose is a disaccharide

Explanation:

Answer:

There is evidence in fossils, the scientists can scan the fossil to see the date.

Explanation:

hope this helps

Answer:

We know that organisms existed millions of years ago by the artifacts and remains that they have left around us.

Explanation:

We find those remains by archaeologist, and they dig up the remains that the people left back then.  

Intraspecific variation, also referred to as "within species variation," is the term used to describe variation within members of the same species. Contrarily, interspecific variation (also known as "across species" variation) refers to variation that takes place when contrasting members of different species.

Individuals belonging to the same species can differ from one another interspecifically. Interspecies variance is referred to as intraspecific variation.

Local extinctions, reductions in population abundance, and anthropogenic selection are threats to intraspecific variation, which encompasses the genetic and phenotypic diversity observed within and among populations. However, analyses of biodiversity frequently overlook this decline in species variety.

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Answer: D

Explanation:

intra - inside

inter - outside

Answer:

1)•Plants do not have a circulatory system.

•Humans have a well defined circulatory system.

2)•transportation in plants occurs through specialised tissue xylem and phloem.

•Transportation in humans occurs through a netwotk of blood vessels such as artery vein capillary.

3)In plants substances transported are water, minerals, sugars and amino acid.

•In humans substances transported are glucose, glycerol, minerals, vitamins, fatty acids, amino acids and hormones.

4)Transportation in plants in controlled by opening and closing of stomata.

•Transportation in humans is controlled by constriction or dilation of blood bessels.

-->■Transportation in humans is more effective than the plants because in humans there is a well defined circulatory system which is highly regulated.As transport occur through blood vessel , transportation can be regulated by dilation or constriction of blood vessel.But plant do not have such circulatory system.

BRAINLIST PLS

Answer:

Vertebrates

Explanation:

option (A) sterilizes the media is the correct answer.Wiping down handrails with ethanol is best described as disinfection.

Disinfection is a process that removes pathogenic microorganisms (but not necessarily all microbial forms) from inanimate objects. Ethanol is a common disinfectant that destroys most vegetative cells of bacteria, fungi, and viruses. Ethanol is known as a dehydrating agent, which removes water from cells and denatures their proteins. Sanitization refers to the process of removing dirt and dust from a surface. Sterilization refers to the process of destroying all forms of microbial life, including bacterial endospores. Autoclaving bacterial growth media prior to use sterilizes the media. Hence, option (A) sterilizes the media is the correct answer.

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The T, as in “2 T all-purpose flour” stands for tablespoon. The correct answer is A)

In the given ingredient list, the "T" stands for tablespoon. It is a common abbreviation used in cooking measurements to indicate a tablespoon of the specified ingredient.

In culinary measurements, there are various abbreviations used for different units of measurement. The most commonly recognized ones are "tsp" for teaspoon and "Tbsp" or "T" for tablespoon. The lowercase "t" is typically used for a teaspoon, while the uppercase "T" is used for a tablespoon.

In the context of the recipe, "2 T all-purpose flour" means that you need to add 2 tablespoons of all-purpose flour to the mixture. This measurement ensures the right balance of ingredients and helps achieve the desired texture and consistency of the final product.

It's important to pay attention to these abbreviations in recipes, as using the wrong amount of an ingredient can significantly affect the outcome of the dish.

So, when following a recipe, make sure to accurately measure the ingredients according to the specified abbreviations to achieve the best results. Therefore, the correct answer is A.

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Answer:

C. Solubility

Explanation:

Solubility of a substance refers to the ability of a substance called the SOLUTE to dissolve in another substance called the SOLVENT to form a SOLUTION. Matter, which constitutes the solid, liquid and gaseous state, can be the solute, which will get dissolved in the SOLVENT (usually a liquid).

Therefore, according to this question, the property of matter that describes a solvent is mixing with a solute to make a solution is known as its SOLUBILITY

Answer:

If crossing over doesn’t occur, then 2 out of the 4 daughter cells would be identical.

We have 46 chromosomes and are diploid meaning we got 1 set (23 chromosomes) from our mom and 1 set (23 chromosomes) from our dad.

In prophase 1, homologous chromosomes associate (chromosome #1 from dad and chromosome #1 from mom. They both code for the same things, but they are NOT identical)

Let’s compare mitosis to meiosis

On the left, see how in mitosis all chromosomes (even homologous) line up in single file (imagine all 46 lining up individually). When anaphase splits the sister chromatids (which are identical) in mitosis, each daughter cell gets the exact same genetic info.

(they get both homologous chromosomes: 1 from dad (yellow)and 1 from mom (purple) resulting in a full diploid set)

On the right in meiosis, see how the homologous chromosomes associate and will split? Chromosome #1 from mom (purple) is going to the left daughter cell while chromosome #1 from dad (yellow) is going to the right daughter cell. This means the two daughter cells will only have 1 set for chromosome #1 (either moms or dads but NOT both) and become haploid (1 set of 23 chromosomes)

Again in mitosis, all 46 lined up individually, but in meiosis the 23 from mom and 23 from dad first associate and each orient to decide which daughter cell gets the dads chromosome or the moms chromosome. They assort independently meaning just because dads chromosome #1 went to the left DOESN’T mean that dads chromosome #2 or #3 will go to the left. This gives a unique pattern of 23 chromosomes for the 2 daughter cells of meiosis 1 (a various mixture of moms and dads, but it is possible to result in a daughter cell with just moms and just dads set, though this would be a very small probability like 1 in 2^23 )

So each daughter cell of meiosis 1 is a haploid set (only 1 set instead of 2) and the opposite of the other (since 1 has fathers while the other has mothers for the same chromosome)

Meiosis 2 is just like mitosis. Here the sister chromatids separate producing 2 identical daughter cells

(identical if crossing over doesn’t occur. Crossing over only occurs on adjacent homologous chromatids)

If crossing over doesn’t occur then both sister chromatids are identical so that 2 out of 4 daughter cells will be exactly identical haploid sets. The other 2 are identical to each other as well.

Explanation:

Answer:

please give me brainlist and follow

Explanation:

Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. In contrast, meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell.

sorry .it's half answer

Fick's second law provides a more thorough explanation of diffusion by taking into account the change in concentration with regard to both time and position. Fick's first law defines the diffusion of a material across a medium, such as a slab, based on concentration gradients.

Fick's first law states that the rate of diffusion (J) is directly proportional to the negative gradient of the concentration (dC/dx), multiplied by the diffusion coefficient (D). Mathematically, it can be expressed as:

J = -D x (dC/dx)

Let's picture a rectangle shape to symbolize a slab in this situation. With higher concentrations on one side and lower concentrations on the other, the concentration of the diffusing chemical is shown as a gradient. Fick's first law states that until equilibrium is established, the material will move from the side with higher concentration to the side with lower concentration.

Fick's Second Law states that the rate of change of concentration (dC/dt) over time is equal to the diffusion coefficient (D) multiplied by the second derivative of the concentration with respect to position (d²C/dx²). Mathematically, it can be expressed as:

dC/dt = D x (d²C/dx²)

In the case of a slab, the concentration gradient is represented by a curve showing how the concentration changes over time and position. Fick's second law explains how the concentration distribution evolves over time due to the diffusion process. It describes how the concentration diffuses and spreads out within the slab, eventually leading to a more uniform distribution.

By comparing the two models, we can see that Fick's first law focuses on the flux of diffusion, which depends on the concentration gradient. Fick's second law, on the other hand, provides a more comprehensive understanding of how the concentration changes over time and position within the slab.

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Answer:  

During the relative refractory period, another action potential can be generated provided the stimulus is large enough.

Explanation:

The relative refractory period is the time after an action potential where the sodium channels are transitioning from inactivated channels to closed ones. In other words, voltage-gated Na+ channels have two gates, an external one and an internal one. During repolarization, the outer gate is blocking the entrance, and the internal one is open. So the channel is inactivated. When the inner gate is closed, the Na+ channel is closed.

During the relative refractory period, a second action potential can happen, but the stimulus has to be large enough to do it since the membrane is hyperpolarized, that is to say, the membrane potential is more negative than the resting action potential. The cell needs more Na+ ions to produce the second action potential.

On each side of the vaginal opening, there are two structures present which are called labia majora and labia minora.

The opening of the vagina, which is an elastic, muscular canal that stretches from the cervix (lower part of the uterus) to the vaginal opening in the female reproductive system, is known as the vaginal opening. The vulva is a term used to describe the external female genital organs, which include the vaginal opening, labia. The labia majora and minor are two structures found on each side of the vaginal opening.

The labia majora, also known as the outer lips, are the thick folds of skin that surround the vaginal opening and protect the genital region. The labia minora, or inner lips, are thin, hairless folds of skin that are located just inside the labia majora. Both the labia majora and minora are sensitive to touch and contain numerous nerve endings, which contribute to sexual pleasure.

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Answer:

d. all of the above​

Explanation:

All of the given choices contribute to the elevated level of carbon in the atmosphere.

This is one of the leading cause of climate change.

Answer:

Because much like the Earth, only one side of the Moon receives light, and the side receiving no light is called, "the dark side of the moon."

Explanation:

Answer:

Motor neurons carry signals from the brain and/or the spinal cord to the muscles and glands of the body. 

Answer:

Explanation:

#

they have different types of things that make them from organisms

The statement is False

A virus may become unresponsive to antiviral drugs. It is well known that viruses keep changing and initially effective antiviral drugs become ineffective.

Viruses that develop resistance to antiviral drugs are very difficult to treat. Viruses, like all other microorganisms, develop drug resistance. With long-term exposure to antiviral drugs, the virus develops resistance, rendering the drugs ineffective.

Viral replication resulting from immunosuppression also leads to increased viral load, manifesting as  increased viremia despite treatment.

The emergence of resistance to antiviral drugs may be inevitable, and  resistant viruses end up being transmitted.

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