An enlarged thyroid gland produces a colloid goiter when:________

The vesicle joins the lysosome organelle when a phagocytic white blood cell consumes a foreign bacterial cell.

Endocytosis, the process by which cells take up macromolecules and other particulate materials, is the first step on the pathways that lead from the cell surface to lysosomes. An endocytic vesicle holding the substance or particle being eaten is formed when a little section of the plasma membrane pinches off and gradually encloses the material to be ingested. The size of the endocytic vesicles produced allows us to distinguish between two primary forms of endocytosis. Phagocytosis is one form, and it entails the swallowing of big particles like dead cells or microbes through big vesicles called phagosomes. The other form is pinocytosis, in which fluids and solutes are ingested by means of tiny pinocytic vesicles.

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Answer: D. Oceanography would be the most useful field of study for a student planning to help preserve coral reefs, as it focuses on the ocean.

Answer:

A

Explanation:

Building high-rise business centers in a city's center is a sustainable land-use strategy for minimizing the impacts of urbanization. Therefore, the correct statement is option B.

The sustainable land-use strategies for minimizing the impacts of urbanization involve promoting environmental sustainability, economic viability, etc. Reducing native plant landscaping in a city's center has negative impacts on ecosystem services.

Native plants support local pollinators, which helps in reducing urban heat island effects and also improves the air quality of the area. Building high-rise business centers in a city's center is a sustainable land-use strategy as it minimizes the use of non-renewable resources and promotes social and economic benefits and conserves open spaces in the area.

Providing affordable housing options in a city's center may be included in a sustainable land-use strategy as it promotes social equity and economic viability. However, it can have negative impacts on the environment if there is increased energy consumption or replaces ecological habitats so it depends on the situation.

Therefore, building high-rise business centers in a city's center is a sustainable land-use strategy for minimizing the impacts of urbanization.

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Mast cells have clathrin.

Clathrin is a protein complex involved in endocytosis and cell signaling, it is found in a variety of cell types, including mast cells. Mast cells are a type of white blood cell that is found throughout the body, they play a crucial role in the body's immune response by releasing various chemicals, such as histamine and cytokines, in response to allergens and other stimuli. Mast cells have many different receptors on their surface that allow them to detect a wide range of signals. These signals can trigger the release of various chemicals from the cell, including histamine and other inflammatory mediators.

Clathrin is a protein complex involved in endocytosis and cell signaling. It is found in a variety of cell types, including mast cells. Endocytosis is a process by which cells take up molecules and particles from their environment.Clathrin is composed of three heavy chains and three light chains, which combine to form a cage-like structure that surrounds and internalizes the target molecule or particle. The internalized cargo is then transported to other parts of the cell or to the cell surface for secretion or recycling.

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Increase production of secretions, relaxation of sphincters, contraction of smooth muscle in gi wall  are all effects of acetylcholine. Thus correct option(d).

Acetylcholine (ACh) is an organic molecule that serves as a neurotransmitter in the bodies and brains of several animal species, including humans.

It is an ester of acetic acid and choline, which is how its name was formed from its chemical composition. Cholinergic refers to bodily regions that utilize or are impacted by acetylcholine.

Cholinergics and anticholinergics are terms used to describe substances that alter the cholinergic system's overall function.

Why is acetylcholine necessary and what does it do?

The parasympathetic nervous system, a portion of the autonomic nervous system (a branch of the peripheral nervous system), which contracts smooth muscles, widens blood vessels, increases body secretions, and decreases heart rate, uses acetylcholine as its primary neurotransmitter.

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Answer:

2.1)As Temperature increases, the rate of reaction increases.

2.2)Enzymes are sensitive to changes in temperature. At point Z, the temperature beacame too high for the enzyme to function, thereby denaturing the enzyme. Once the enzyme was denatured the reaction could not continue.

Answer:

Two reasons are that the grasses they ate disappeared which caused some to die, but some lived and ate from trees and reproduction and such happened.  

Explanation:

i need points bro

Answer:

light micro = use of beam of light,

electron = beam of electrons, exaamine living cells

Explanation:

Answer: it will be answer c

Explanation: because it says organisms not human. There are a lot of them could reproduce without mate

According to the research, sphingosine is an aminoalcohol that forms ceramides and is not a component of cardiolipin.

It is an aminoalcohol that is found in most of the sphingolipids of animal tissues.

It intervenes in cellular metabolic regulation processes related to lipid signaling pathways.

Therefore, we can conclude that according to the research, sphingosine is an aminoalcohol that forms ceramides and is not a component of cardiolipin.

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Answer:

False

Explanation:

During diffusion molecules move according to the concentration gradient from high to low concentration

Answer:

during diffusion, molecules move from a region high concentratiom to a region of low concentration until equilibrium is reached.

To answer this question, we need to understand the relationship between angles and arcs in a circle. When an angle is formed by two radii of a circle, it intercepts an arc on the circumference of the circle. The measure of the arc is equal to the measure of the angle in degrees.

In this case, the measure of minor arc PR is x degrees. Therefore, the measure of angle PQR (the angle formed by radii PQ and QR) is also x degrees. We can write an expression that represents the measure of angle PQR in degrees as:
Angle PQR = x degrees

Remember, when given the measure of an arc in a circle, we can find the measure of the angle it intercepts using the same number of degrees.

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Answer:

Codon AUG

Explanation:

The first AUG in an mRNA's coding region is where translation into protein begins

Answer:

a) by living in the shade of big trees is not a way that animals survive the harsh conditions of a desert.

Explanation:

I think the answer is D)

Explanation:

I don't think they have to walk a certain way so their skin doesn't touch the hot sand

Answer:

H. Vacuole.

Explanation:

Vacuole is the organelle that is responsible for storing of water and helps to maintain the shape of plant cell. Plant cell has one large vacuole that maintain water balance in plant cell. vacuoles are also used to store cellular fuel by some cells in animals, plants, and microorganisms. In animals, vacuole is small and responsible for the storing of waste products that are produced in the cell.

Answer:

h

Explanation:

got it right on flvs:)

Answer:

The most well-known Hershey-Chase experiment was the final experiment, also called the Waring Blender experiment, through which Hershey and Chase showed that phages only injected their DNA into host bacteria, and that the DNA served as the replicating genetic element of phages

Explanation:

Answer:

Due to difference in size and shape of flower.

Explanation:

Two species of plant cannot interbreed with each other because their flowers differ in size and shape. Each flower has different time of maturation and the appearance of reproductive stage as well as difference in their chromosome number. If these factors occurs on the same time and having same number of chromosomes so they are able to interbreed with each other otherwise not so that's why we can say that two species can't interbreed with each other.

Answer:

Green algae grow at the edges of a glacial lake in Wales. Hundreds of millions of years ago, similar algae adapted to survive temporarily outside of the water may have kicked off the evolution of green land plants.

Algae didn't always hang out in the seas, but one fateful day, about a billion years ago, a simple bacterial cell swallowed a cyanobacteria cell, writes Ed Yong at The Atlantic. This chance occurrence allowed the bacteria to produce energy from the sun, a process known as photosynthesis.

Explanation:

Answer:

It relay signals between the cell internal and external environment.

It allows cell to identify each other and interact.

Answer:gene flow

Explanation:

One biochemical evidence that supports the theory of evolution that says that we all come from a common ancestor is the fact that all organisms use the same genetic code for the translation of proteins, for example, the codon AUG codes for the amino acid methionine in all organisms.

This means D would be the right answer.

a. If a homozygous tall, white plant is crossed with a homozygous short, purple plant, the phenotype of the F1 generation will be heterozygous tall, purple plants. b. If an F1 plant from this cross is then crossed with to a homozygous tall white plant, the possible phenotypes of the offspring will be heterozygous tall, purple plants and heterozygous tall, white plants in 1:2 expected proportions.

a. Homozygous tall, white plant is crossed with a homozygous short, purple plant, the phenotype of the F1 generation will be heterozygous tall, purple. A Punnett square can be used to determine the F1 offspring. The genotype of the homozygous tall, white parent would be TTWW and the genotype of the homozygous short, purple parent would be ttww.

Therefore, the F1 offspring will be heterozygous tall, purple plants (TtWw).

b. If an F1 plant from this cross is then crossed with a homozygous tall white plant, the possible phenotypes of the offspring would be heterozygous tall, purple plants and heterozygous tall, white plants. The expected proportions of the offspring are:

1/4 of the offspring would be homozygous tall, white (TTWW).

1/4 of the offspring would be homozygous short, purple (ttww).

1/2 of the offspring would be heterozygous for both traits (TtWw).

A Punnett square can be used to determine the offspring of the cross.

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Answer:

Diffusion

Explanation:

Diffusion is the movement of substances from an area of high concentration to an area of low(er) concentration

Answer:   Certain traits increase in frequency in a population because when recombination occurs during sexual reproduction, genes are usually shuffled so that each parent gives its offspring a random assortment of its genetic variation, so the frequency of a gene may increase in a population through this genetic variation. One quote from a source I read states, "When recombination occurs during sexual reproduction, genes are usually shuffled so that each parent gives its offspring a random assortment of its genetic variation. However, genes that are close together on the same chromosome are often assorted together. Therefore, the frequency of a gene may increase in a population through genetic hitchhiking if its proximal genes confer a benefit."(lumen) This quotes explains why certain traits increase in frequency in a population.

Work Cited: https://courses.lumenlearning.com/boundless-biology/chapter/population-evolution/

Certain traits increase in frequency in a population because they have dominant traits.

What is dominance? We say that an allele is dominant when it manages to determine a phenotype, even if it occurs in a single dose. This means that the dominant allele will express itself in both homzygosity and heterozygosity. Dominant allele is expressed in the phenotype, even in a single dose.

With this information, we can conclude that certain traits increase in frequency in a population because they have dominant traits.

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Homeostasis control in living things is exerted over all of the following except response to stimuli. The correct answer is C.

Homeostasis is the ability of a living organism or cell to maintain a stable internal environment despite changes in external conditions. It involves the regulation of various physiological parameters, such as temperature, pH, fluid balance, moisture level, acidity level, and glucose levels, through feedback mechanisms that help to maintain a balanced and stable state.

This allows the organism or cell to function optimally and respond effectively to environmental challenges or changes. Homeostasis is essential for survival and is maintained by complex physiological and biochemical processes that work in harmony to keep the internal environment within a narrow range of acceptable levels.

However, the response to stimuli, such as sensory input from the environment, is not directly controlled by homeostatic mechanisms but by other physiological processes such as reflexes, sensory perception, and decision making in the brain.

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1. The law of conservation of energy states that energy cannot be created nor destroyed. Therefore, the correct answer is A.

2. The law of conservation of mass states that matter cannot be created nor destroyed. Therefore, the correct answer is C.

3. Raymond Lindeman is consideres the founder of ecosystem ecology. Therefore, the correct answer is B.

4. Trophic level is a position in a food chain, a food web, or an ecological pyramid that is occupied by a group of organisms. Therefore, the correct answer is D.