Cells in the thyroid gland produce and secrete thyroid hormone (a polymer of amino acids) that helps to regulate metabolism. What organelle is most likely abundant in cells of the thyroid gland?

Answer:

Quorum Sensing

This is how bacteria "communicate" with one another.

A tiny quorum molecule will be secreted by each individual bacteria in a set quantity. They can each determine how many other bacteria of the same sort are nearby based on the quantity of this chemical around them.

When the quorum molecule reaches a certain mass and a specific threshold, it triggers some type of shift in gene transcription that leads the bacteria to behave differently (they all do it because they are all exposed to a high enough concentration of the quorum molecule).

Answer:

The lithosphere is the solid, outer part of the Earth.

asthenosphere, zone of Earth's mantle lying beneath the lithosphere and believed to be much hotter and more fluid than the lithosphere.

The structure which surrounds and protects the cell is the cell membrane. It is made up of lipids and proteins.

Lipids, specifically phospholipids, make up the cell membrane. Lipids are essential in the formation of the cell membrane's structure. They have a hydrophilic head and a hydrophobic tail, which repels water. The hydrophobic tails of the phospholipids point inward and the hydrophilic heads point outward toward the water-based environment both inside and outside the cell in a bilayer arrangement.

The cell membrane is made up of lipids and proteins in addition to these other substances. The lipid bilayer contains proteins that perform a variety of tasks like cell signaling, cell adhesion, and molecule transport in and out of the cell. In order to maintain its internal environment, the cell depends on these proteins to control the substances that enter and leave the cell.

Therefore, the most appropriate answer is proteins and lipids.

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Answer:

here are some:

- microbiologist

- environmental scientist

- environmental engineer

- environmental specialist

- marine biologist

- environmental chemist

- wildlife biologist

Explanation:

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An infectious disease researcher isolates the pathogen responsible for an emerging disease. The microbe is grown in the lab. Preparation of the laboratory-grown microbe is treated with a lethal dose of ionizing radiation and then tested for its potential as a vaccine and this is  Inactivated type of Vaccine.

Pathogens include viruses, bacteria, fungi, and parasites that can enter the body and harm the immune system. Among many additional viruses that can lead to serious illnesses are anthrax, HIV, the Epstein-Barr virus, and the Zika virus.

An easy, secure, and reliable method of preventing hazardous infections before you are exposed to them is vaccination. It boosts your immune system and builds up your body's natural defenses against particular infections.

In inactivated immunizations, the disease-causing microorganism is eliminated.

Inactivated vaccines typically don't provide as strong of immunity (protection) as live vaccines. Therefore, it can take several doses (booster injections) throughout time to keep up your resistance to diseases.

Using inactivated vaccinations, you can guard against

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Answer:

A. chromosome

Explanation:

Chromosomes are typically what you see in a chart like karyotype that shows all the chromosomes of a particular organism. These are the highly condensed structures of DNA during replication which makes it easy to transfer DNA during replication.

When DNA condenses in preparation for cell division, it is called a chromosome.

The correct option is A .

When DNA condenses in preparation for cell division, it condenses and coils tightly into structures called chromosomes. Chromosomes are the compact and organized form of DNA that is visible under a microscope during cell division. Each chromosome consists of a single, long DNA molecule wrapped around proteins called histones. Chromosomes are essential for the proper segregation and distribution of genetic material to daughter cells during cell division (e.g., mitosis or meiosis).

After cell division is complete, the chromosomes decondense, and the DNA returns to its extended form as chromatin, which can be actively transcribed and translated for normal cellular functions.

Hence , A is the correct option

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The F1 fraction derives its name from the term “Fraction 1” and FO (written as a subscript letter “o”, not “zero”) derives its name from being the oligomycin binding fraction. Oligomycin, an antibiotic, is able to inhibit the FO unit of ATP synthase.

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F1 particles are named so because they were first identified as the first generation of particles in a process known as "fractionation."

This process involves the separation and isolation of cellular components based on their size and density using centrifugation.

During experiments with mitochondria, scientists observed that when mitochondria were subjected to fractionation, two distinct types of particles were obtained: F1 particles and F2 particles.

F1 particles were found to contain the ATP synthase enzyme responsible for ATP synthesis in cellular respiration. Hence, they were named "F1 particles" to denote their status as the first fraction of particles isolated during this particular experiment.

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Prostate specific antigen (PSA) is used in the screening of prostate cancer. Due to the high incidence of false positive, PSA testing receives a USPSTF grade of poor.

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Answer:

The old brain—including the brain stem, medulla, pons, reticular formation, thalamus, cerebellum, amygdala, hypothalamus, and hippocampus—regulates basic survival functions, such as breathing, moving, resting, feeding, emotions, and memory.

Explanation:

Answer:

Environmental Resistance.

Answer:

Environment Resistance

Explanation:

Factors that reduce population numbers (called environment Resistance) limit population growth

Answer:

it promotes international cohesion

Explanation:

through international employment they learn how to work together hence they get used to work together

Of the four globins that make up hemoglobin, two are identical and called alpha globins, and the other two are called beta globins and are also identical.

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The individual who did not receive the same credit as Darwin was Alfred Russel Wallace.

The evolution theory is a scientific theory explaining how natural selection may change (evolve) phenotypes across generations.

Alfred Russel Wallace was an evolutionary biologist who understood the importance of natural selection on this process.

In conclusion, Alfred Russel Wallace did not receive the credit as Darwin.

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Answer:

genes

Explanation:

chromosomes contain genes

Answer:

Asking questions is a uniquely powerful tool for unlocking value in organizations: It spurs learning and the exchange of ideas, it fuels innovation

Explanation:

Answer:

Species

Explanation:

species

The smallest unit of this hierarchical categorisation is species while the largest unit is kingdom.

The cell organneles in the given figure are as follows (A). Nucleus (B). Rough endoplasmic Reticulum  (C). Golgi body

Organelles are specialized structures that perform various jobs inside cells. The term literally means “little organs.”

In the same way organs, such as the heart, liver, stomach, and kidneys, serve specific functions to keep an organism alive, organelles serve specific functions to keep a cell alive.

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Myelination is the answer.

Myelin is an insulating layer or sheath formed around nerves, including the brain and spinal cord. It is composed of protein and fat. This myelin sheath allows electrical impulses to be transmitted quickly and efficiently along nerve cells. When myelin is damaged, these impulses slow down.

CNS myelin is produced by a special cell called oligodendrocytes. PNS myelin is produced by Schwann cells. Although the two types of myelin are chemically different, they both perform the same function and enable the efficient transmission of nerve impulses down axons

Myelin is formed by the innermost sheet-like glial process that contacts axons in the PNS (peripheral nervous system) and CNS. Axons spiral around the axons and spin out several layers of overlapping membranes.

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When comparing spun microhematocrit results with hematocrit results obtained on an electronic cell counter, the spun hematocrit results may vary from 1 to 3 % because of this trapped plasma (unless the cell counter has been calibrated against spun microhematocrit uncorrected for trapped plasma).

Trapped plasma is the quantity of intracellular plasma last in the packed cell column of the microhematocrit after centrifugation.

It artificially increases the packed cellular column constituting an effective bias to the hematocrit. the quantity of trapped plasma varies as a function of cell packing.

Inadequate centrifugation, poor blending, and inappropriate anticoagulant awareness also can make a contribution to technical errors. In spun hematocrits, a number of problems that have atypical red cells can also purpose plasma to be trapped inside the erythrocytes.

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Angiosperms belong to the plant kingdom. Flowers are the organs needed for sexual reproduction, carrying feminine and masculine structures.  

Flowers are reproductive structures in charge of sexual reproduction through the production of seeds.

⇒ Feminine reproductive structures

⇒ Masculine reproductive structures

⇒ External non-reproductive structures

Flowers also have external structures known as petals and sepals. These are modified leaves whose principal function is to protect the flower's fertile parts and attract pollinators.

Petals characterize as having many different colors that make the flower more attractive to insects and other animals. When they visit a flower searching for their recompense, the flower's pollen grains transfer to the insect's body.

The insect transports the pollen to the next visited flower, leaving it in the stigma of the second flower.

1) The mature pollen grains are driven to the stigma of the same flower or other flowers of the species, where they stick.

2) Once in the stigma, the pollen grain germinates.

3) A pollinic tube forms. It goes from the stigma along the style and ends in the flower ovary.

4) The pollen grains move along the tube forward to the ovary.

5) Once in the ovary, the pollen grains get in touch with the ovule. They have double fertilization.

6) The zygote develops in the ovary.

Now, let us answer the questions,

1) Flower Dissection ⇒ you will find and scheeme in the attached files

2) Characteristics of the plant kingdom

3) Stomata regulate water vapor flow through transpiration.

Desert plants have fewer stomata than tropical plants as an adaptation to avoid losing water.

4) Having fewer stomata help protect the health of a plant by preventing excessive water loss under extreme conditions.

5) The vascular system of plants is composed of

If the xylem gets damaged, the plant will not be able to take water and nutrients from the ground. If the phloem gets damaged, the plant will not be able to use photosynthetic products in different tissues. In any case, the plant will dye.

6) Because plants and human dermal tissues vary in the number of layers and functions.

7) Ground tissues are not meristematic, dermal, or vascular tissues. However, among their functions, we can mention photosynthesis, storage, regeneration, and healing capability. All of them are necessary to survive. If the ground tissues are damaged, the plant can not survive.

8) Flowering plants can reproduce sexually or asexually. During sexual reproduction, pollen grains fertilize the eggs in the ovary.

9) During pollination, insects and other animals get a recompense -nectar-. Flowers provide a source of food and prime matter to different pollinator agents. Also, flowers might be a shelter for many species.

10) The stamen where the pollen is produced. The ovary is where eggs are produced and where the zygote develops. Pollen gets to the egg in the ovary and fertilizes it (description above).

11)

The embryo is formed after the double fecundation. It composes of growing cotyledons, an epicotyl, and a hypocotyl.

The tegument and endosperm of the seed protect the embryo from dehydration and denutrition.

Germination is the process of development and the emergence of the embryo. These are a series of steps that must occur in the seed from the moment the embryo begins to develop until a newly emerged plantule is formed. For germination to occur, there must be appropriate environmental conditions.

12) Flowers are bright and colored because this is how they attract pollinator agents such and insects and other animals.

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Genetic information flows from DNA to RNA to protein. A would be the correct option.

Genetic information is stored in the DNA of organisms.

In order for this information to be transferred, it is first encoded into another molecule, the RNA.

The genetic codes in RNA are then translated into their respective amino acids to form polypeptide chains known as proteins.

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During weeks 17-20, quickening occurs, which is when the (d) mother is able to feel the fetus move inside her womb.

The period during which a fetus develops inside a woman's womb or uterus is known as pregnancy, it typically lasts about 40 weeks or just over 9 months in humans.

During the course of pregnancy, the fetus develops from being a single cell to a complete individual.

Quickening is the movement of the baby inside the mother’s womb at around 16-20 weeks of pregnancy. It assures the health and growth of the baby inside the uterus. A fetus that is growing well stimulates more quickening movements.

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Northern blotting is the separation technique that can detect proteins in a complex mixture with the use of antibodies directed against a protein of interest.

Commonly used protein separation techniques include ion exchange chromatography, affinity chromatography, dialysis, ultrafiltration, size exclusion chromatography, and electrophoresis [sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), Isoelectric point electrophoresis, and chromatographic electrophoresis] are included.

Northern blot is a laboratory analysis method for testing RNA. In particular, purified RNA fragments are separated from biological samples (such as blood and tissue) by passing through a gel or matrix like a sieve with an electric current. This allows small fragments to move faster than large fragments.

Northern blotting is named because it resembles Southern blot, the first blotting technique named after biologist Edwin Southern. The main difference is that Northern blots analyze RNA rather than DNA.

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Answer:

western blotting

Explanation:

Metanephric mesoderm

The metanephric mesoderm of the embryo develops into nephrons.

The ureteric bud is limited to developing the renal collecting system, while the metanephric mesoderm is committed to differentiating into nephrons.

The fundamental structural and operational unit of the kidney is the nephron. They are a tiny structure made up of renal tubules and corpuscles.

Each human kidney contains millions of nephrons. The length of the mammalian nephron, which ranges from 35 to 55 mm, is long and tube-like in shape. The tube is closed, folded, and inflated at one end to form the Bowman's capsule, also known as the renal corpuscular capsule, which houses the glomerulus, a collection of tiny blood arteries. The renal corpuscle is made up of the glomerulus and this capsule combined.

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In the average person, 70-80 percentage of alcohol is absorbed through the small intestine.

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Answer:

This is 'crossing over'.

Explanation:

The chromosomes are crossing over and exchanging regions.

8

The clade Ecdysozoa includes 8 phyla.

The clade Ecdysozoa incudes 8 phyla, which are the following:

Ecdysozoans are most known for their cuticle, a thick yet flexible exoskeleton that shields these creatures from predators, water loss, and other elements of their environment. As they develop, all individuals in this superphylum molt or shed their cuticle on occasion. They produce a fresh cuticle after molting that will protect them until their subsequent growth phase. Ecdysis, from which the name of the superphylum is derived, is the act of molting and replacing the cuticle.

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On land but close to oceans. Thus, option "A" is correct.

Earthquakes occur as a result of collisions along oceanic-continental convergent boundaries.

The majority of the earthquakes occur alongside the Ring of Fire of the Pacific Ocean. The Ring of Fire is found in the basin which is a land area found close to the coastlines of the ocean. This validates its occurrence on land but close to the oceans.

Thus, option "A" is correct.

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During prophase, the chromosomes condense and mitotic spindles form (option C). Details about prophase can be found below.

The prophase stage of cell division is first stage during which chromatin condenses to form the chromosomes.

Another feature that characterizes the prophase stage is the formation of mitotic spindles around the chromosomes.

Therefore, during prophase, the chromosomes condense and mitotic spindles form.

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