Select the correct answer from each drop-down menu.
The
gets rid of cell waste by breaking down large molecules into smaller ones for the cell to excrete. The
helps these waste molecules exit the cell.

Answer:

The reason there are different numbers of nucleoli in the cells is that the nucleus in the cell is the primary cell structure responsible for making the DNA, and protein synthesis.

Explanation:

Answer:

mammals

Explanation:

both have mammary glands

Answer:

The liver is a complex and multifunctional organ that performs several critical functions in the body, including:

Metabolism: The liver processes and stores various nutrients, including carbohydrates, fats, and proteins, and converts them into forms that the body can use.

Detoxification: The liver helps remove harmful substances from the blood, such as drugs, alcohol, and toxic byproducts of metabolism.

Bile production: The liver produces bile, which is essential for the digestion and absorption of fats and fat-soluble vitamins in the small intestine.

Blood glucose regulation: The liver plays a key role in regulating blood sugar levels by releasing glucose into the bloodstream as needed and storing glucose as glycogen when there is an excess.

Blood clotting: The liver produces several important blood-clotting factors that help prevent excessive bleeding.

Vitamin and mineral storage: The liver stores important vitamins and minerals, such as iron, copper, and vitamin A.

Hormone regulation: The liver plays a role in the production of several hormones, including insulin, glucagon, and estrogen.

Overall, the liver is essential for maintaining overall health and proper bodily function.

Explanation:

Answer:

heart , liver , stomach and kidneys

Answer:

Structure. The IVC is formed by the joining of the left and right common iliac veins and brings collected blood into the right atrium of the heart. It also joins with the azygos vein (which runs on the right side of the vertebral column) and venous plexuses next to the spinal cord.

Source: common iliac vein; lumbar veins;

Answer:

Inertial confinement fusion

Explanation:

Answer:

B. inertial confinement fusion

Explanation:

Answer:

Clean your hiking and fishing gear. ...

Don't move firewood. ...

Fish using native bait when possible. ...

Volunteer at removal efforts. ...

Talk to your local nursery when selecting plants for your garden. ...

Clean your boat before transferring to a new body of water

Explanation:

Answer:

this is not science questions it is of maths

Answer:

j

Explanation:

Answer:

second one is the best which describes roots

The main function of root hairs is to absorb water and minerals from the soil.

The function of root hairs is to absorb water and nutrients from the soil and it sent to the upper parts of the plant. In roots, most water absorption happens through the root hairs.

So we can conclude that the main function of root hairs is to absorb water and minerals from the soil.

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La ciencia ha aportado muchos avances y descubrimientos a la biología a lo largo de los años.

Uno de los mayores aportes ha sido el desarrollo de tecnologías como la secuenciación del ADN y la microscopía electrónica, lo que ha permitido a los biólogos estudiar la estructura y función de las células y moléculas a nivel molecular.

La investigación en genética y biotecnología ha permitido la manipulación de genes para producir organismos genéticamente modificados y desarrollar terapias genéticas para enfermedades humanas.

También se han realizado importantes descubrimientos en la evolución, la ecología y la conservación de especies.

En general, la ciencia ha contribuido significativamente al avance de la biología y su impacto en la sociedad.

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Science has made many important contributions to the field of biology, including:

The discovery of cell theory: The cell is the basic unit of life, and scientists have discovered that all living organisms are made up of one or more cells. The cell theory was first proposed by Robert Hooke in the 17th century and was later developed and refined by other scientists.

The discovery of DNA: DNA is the genetic material that contains the instructions for the development and function of all living organisms. The discovery of DNA by James Watson and Francis Crick in the 20th century revolutionized our understanding of genetics and heredity.

The development of molecular biology: Molecular biology is the study of the molecular basis of biological activity, including the interactions between DNA, RNA, and proteins. The development of molecular biology has led to many important discoveries, including the identification of the genetic basis of many diseases.

The use of technology to study biology: Advances in technology, such as microscopy, genetic engineering, and high-speed computing, have greatly increased our ability to study biology and have led to many important discoveries.

The development of new therapies and treatments: Science has led to the development of many new therapies and treatments for diseases, including vaccines, antibiotics, and targeted therapies.

Overall, science has played a critical role in advancing our understanding of biology and has led to many important discoveries and advancements in medicine, agriculture, and other fields.  

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Translated Question ;

Contributions of science to biology?

Answer:

The water table would rise

Explanation:

For the other 3 to be affected, it would take a MASSIVE amount of additional water.

A bacterial pathogen has breached the skin barrier of a human. this is the first time this human host has been exposed to this particular pathogen. The statement is not true regarding this situation is the pathogen will be killed by the immune system.

When a bacterial pathogen breaches the skin barrier of a human for the first time, there are a few things that happen. First, the host's immune system is triggered and recognizes the foreign bacteria. The immune system will then attempt to fight off the pathogen through the production of antibodies and other cellular responses.

However, the pathogen is able to survive and reproduce, which can lead to an infection. This is because the immune system against the new pathogen has not yet fully developed. So the answer is not true regarding  situation is the pathogen will be killed by the immune system.

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Answer:

Pick up earthworms gently with moist hands describes how to appropriately handle live earthworms in a lab investigation

Hope it helps :)

Answer:

it is a mammal it is warm blooded

Answer:

When a alpha particle is emitted, the nucleus looses two protons and two neutrons.

Answer:

1. skeletal

2. brain

If thyroid hormone synthesis decreased, we would expect the metabolic rate to also decrease. This is because thyroid hormones, specifically thyroxine (T4) and triiodothyronine (T3), play a crucial role in regulating the body's metabolic rate. These hormones stimulate the body's cells to increase their metabolic activity, which in turn increases the body's overall metabolic rate.

If there is a decrease in the synthesis of these hormones, the body's cells will not be stimulated to increase their metabolic activity, leading to a decrease in the metabolic rate. This can result in symptoms such as fatigue, weight gain, and sensitivity to cold temperatures. Therefore, it is important for the thyroid gland to produce adequate amounts of thyroid hormones in order to maintain a healthy metabolic rate.

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If there is not enough of ATP molecules available then, there is no muscle contraction.

Adenosine triphosphate (ATP) is a way to store and also uses this energy in the breaking down the complex compounds which are present in the food that we eat. If there is not enough amount of ATP present, then this could lead to a lesser oxygen available in the cell on the food being eaten. Hence, this will affect the energy that we can get from a certain type of food particles.

Muscle contraction is the process of tightening, shortening, or lengthening of the muscles when a person do some type of activity. Muscle contraction can happen when a person can hold or pick up something, or when a person can stretch or exercise with weights.

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The purpose of the lacz gene in a plasmid cloning vector is to serve as a reporter gene and a selectable marker for successful cloning. The lacz gene encodes the enzyme beta-galactosidase, which can break down a substrate called X-gal, producing blue colonies when expressed. In the cloning process, the lacz gene can be disrupted by the insertion of the target DNA fragment.

If the target DNA is successfully inserted, the beta-galactosidase will not be produced, leading to white colonies. This allows for easy identification and selection of colonies containing the desired recombinant plasmid.

Selection of recombinant clones: The lacZ gene is often disrupted by the insertion of foreign DNA, such as an insert of interest. This disruption prevents the production of functional β-galactosidase enzymes bacterial colonies that contain the plasmid with an intact lacZ gene will produce β-galactosidase and can metabolize a chromogenic substrate, such as X-gal, resulting in blue colonies. On the other hand, recombinant clones with the disrupted lacZ gene will not produce functional β-galactosidase, leading to white colonies. This allows for the selection and identification of recombinant clones.

Screening of recombinant clones: The lacZ gene can be used for screening purposes using a technique called blue/white screening. It involves the use of a chromogenic substrate, such as X-gal. When β-galactosidase is functional, it cleaves X-gal and produces a blue color. Therefore, non-recombinant colonies with intact lacZ gene will appear blue, while recombinant clones with disrupted lacZ gene will appear white.

Insert orientation determination: The lacZ gene in plasmid vectors often contains specific restriction enzyme recognition sites within its coding sequence. By cloning DNA fragments into these sites, the orientation of the insert can be determined based on the resulting sizes of the restriction fragments after enzymatic digestion. This helps confirm whether the insert is correctly oriented within the plasmid.

Overall, the lacZ gene in plasmid cloning vectors provides a convenient method for the selection, screening, and orientation determination of recombinant clones during the cloning process.

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Answer:

The mitochondira is the "powerhouse" of the cell, it produces energy for the cell like powerplants produce energy for the city.

Explanation:

Height is a good example of polygenic inheritance because it is a complex trait that is influenced by multiple genes. Polygenic inheritance refers to the inheritance of traits that are determined by the combined effects of multiple genes, rather than a single gene.

In the case of height, numerous genes contribute to its determination. Each gene may have a small effect on height individually, but when combined, their cumulative effects result in the observed range of heights in a population. This means that variations in height can be attributed to the additive contributions of multiple genes.

Furthermore, environmental factors also play a role in influencing height. Factors such as nutrition, overall health, and socioeconomic conditions can interact with the genetic factors to affect an individual's height.

Due to the involvement of multiple genes and environmental factors, height displays a continuous variation in the population, with a bell-shaped distribution. This pattern is characteristic of polygenic inheritance, where the phenotype is influenced by the combined effects of many genetic and environmental factors.

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Answer: A

Explanation:

Answer:

It takes a long time.

Answer:

it forms big ice chunks but the answer is it take a long time

Explanation:

glaciers are formed by snow that does not completely melt and stratify. when snow is under the influence of super layers it initially turns into pieces of ice and over time turns into glaciers

Answer:

I think hazardous waste

Answer:

b

Explanation:

Answer:

c.) eat other organisms for energy

Proteins can be denatured or rendered inactive by factors such as acids and bases.

Denaturation refers to the process in which a protein loses its structure and, as a result, its function. This can be caused by various factors, including changes in pH. When proteins are exposed to extreme pH conditions, such as highly acidic or highly alkaline environments, the hydrogen bonding and electrostatic interactions that stabilize the protein structure can be disrupted.

Acids, which release hydrogen ions (H⁺), can cause protonation of amino acid side chains and disrupt the protein's native conformation. Bases, on the other hand, can deprotonate amino acid side chains and alter the protein's structure. Both acidic and basic conditions can lead to the denaturation of proteins, rendering them inactive.

Buffers play a different role in protein stability. Buffers are solutions that resist changes in pH when acids or bases are added. They help maintain a stable pH environment, which is crucial for the proper functioning and stability of proteins.

By preventing drastic changes in pH, buffers can help preserve the native structure and activity of proteins, minimizing the risk of denaturation. Therefore, buffers are not factors that denature proteins, but rather aids in maintaining their stability.

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Answer:

Single base pair mutations can be identified by any of the following methods: Direct sequencing, which involves identifying each individual base pair, in sequence, and comparing the sequence to that of the normal gene.

DNA is the molecule which is most likely to be examined to locate gene mutations. Thus, the correct option is A.

Genetic mutations are the changes to the DNA sequence which happen during the process of cellular division when the cells make copies of the DNA molecules. The DNA molecule tells body how to form and function well.

Genetic mutations are the changes which could lead to genetic conditions such as cancer, or they could help the humans to better adapt to their environmental conditions over a period of time.

Mutations can be of many different types, such as substitution, deletion, insertion, and translocation of the genetic sequence.

Therefore, the correct option is A.

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