Why is it important for the cells of multi-cellular organism to undergo mitosis?

Answer : Option B) Nonhuman life in an urban ecosystem differs from that in an undeveloped forest ecosystem.

Explanation : From the above information given, it can be simply concluded that humans have changed the environment around them. The human habitats are very different from the nonhuman life habitats. They have their own ecosystem designed for their comfort. This impacted the nonhuman life as they have different ecosystem in cities than in the forests.

The given statement is False.

The rock cycle is equally important to the plants, animals and human beings. Rocks, soil and minerals are very important for the plants as it gives life to other organisms on earth. Humans beings are also dependent of rocks for many of its essential purposes. Animals also use cave made of rocks as a source of shelter.

Thus, rock cycle is equally important to living organism.

Final answer:

The rock cycle is fundamental to living organisms, affecting soil fertility, climate, and the carbon cycle, and it helps in understanding life's history through fossils. The statement is indeed false.

Explanation:

The statement that the rock cycle is not important to living organisms is indeed false. The rock cycle plays a crucial role in shaping the planet's surface, providing essential minerals and nutrients for soil development, which in turn supports plant growth and the broader ecosystem. Rocks also contribute to the regulation of atmospheric gases through processes such as weathering and erosion, which impact climate and living conditions for organisms.

Rocks host fossils that help scientists understand the history of life on Earth. Moreover, the rock cycle interacts with other cycles like the carbon cycle, influencing the global carbon budget and thereby affecting all life forms that depend on carbon for their biological processes.

The rock cycle can be described as a dynamic process involving the formation, breakdown, and reformation of rocks. Through igneous, sedimentary, and metamorphic processes, rocks are continuously transformed over vast timescales, although they may seem static to the human eye.

Answer: True

Explanation:

DNA is a biological evidence. It is a heredity material which is present in all organisms on earth. The DNA in humans can be taken as sample from nails, bones, blood, skin, hair and other sources.

The DNA samples can be taken so as to establish the identity of the culprit, victim or any one which is associated with crime.

The DNA evidence has applicability as a potent evidence in the court of law. Thus utmost care should be taken to preserve it's integrity until it is analysed and presented in the court of law.

Thus the DNA evidence should be collected and preserved in airtight containers so as to prevent the entry of airborne pathogens like bacteria, virus these can contaminate the sample evidence and can make the evidence not of any use.

Answer:

False

Explanation:

It can encourage growth of mold, so the samples should have ventilation.

The discovery of cells was made possible by the invention and improvement of the microscope in the 17th century, particularly by Antonie van Leeuwenhoek. His work led to discoveries of bacteria, protozoa, and spermatozoa, allowing future advances in biological research.

The significant advance in technology that made the discovery of cells possible was the invention of the microscope. In the 17th century, two Dutch spectacle makers, Hans and Zacharias Janssen, invented a basic microscope with a magnifying glass. However, it was the development and improvement of the microscope, particularly by Antonie van Leeuwenhoek, that allowed for the detailed visualization of cells. Leeuwenhoek's microscopes had better clarity and greater magnifications compared to previous models, which led to his discovery of bacteria, protozoa, and spermatozoa. Furthermore, his work paved the way for future explorations into the cellular world.

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Nerve cells and red blood cells are two examples of specialized cells. Nerve cells have long extensions that help them transmit electrical messages, while red blood cells are specialized to carry oxygen through the blood.

Two examples of specialized cells are nerve cells and red blood cells.

Nerve cells, also known as neurons, have long extensions called axons that help them carry electrical messages to other cells. This allows them to transmit signals throughout the body.

Red blood cells are specialized to carry oxygen quickly through the blood. They contain a protein called hemoglobin, which binds to oxygen and transports it to tissues throughout the body. Their concave shape allows them to squeeze through narrow blood vessels and maximize the surface area available for oxygen exchange.

The answer is varied tidal action

Answer:

The correct answer is "Varied tidal action".

Explanation:

Varied tidal action refers to the presence of tides with different sizes and forces along a coast. This coastal dynamics characteristic limits the abundance of aquatic organisms because organisms must survive tidal action. Varied tidal action interferes with the adaptation of the aquatic organisms, as only a few organisms can survive this characteristic such as sea stars, sea urchins and sea cucumbers.

The functional group found in both fatty acids and amino acids is the carboxyl group (-COOH).

A functional group is a specific group of atoms or bonds within a molecule that are responsible for its characteristic chemical reactions. Functional groups provide a means of predicting the reactivity of organic molecules and play a crucial role in organic chemistry.

Some common functional groups include alcohols (OH), carboxylic acids (COOH), amines (NH2), and alkanes (C-C). Understanding functional groups is essential for predicting the behavior of organic molecules and designing chemical syntheses. They are key to understanding the chemistry of many biologically important molecules such as proteins, carbohydrates, and lipids.

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Answer:

The process of photosynthesis makes glucose, which is used in cellular respiration to make ATP. In the process of cellular respiration, glucose is converted into carbon dioxide and water that is used in the process of photosynthesis.

The product of one process is the reactant of the other process, the chemical reaction of respiration is exactly opposite to the chemical reaction of photosynthesis.

Answer:

Male (X Chromsome)

Explanation:

The mother is usually homozygous, meaning she has two of the same chromosome, so her offspring will get the same chromosome from her regardless. However, the father is heterozygous, meaning he has different chromsomes. Him passing down one or the either will determine the sex.

For example, in humans the mother passes the X, and then the father determines if it is a boy (passes down Y), or if it is a girl (passes down X).

The true information is that lipids are a type of fat, as option A shows.

Lipids are a type of fat that can have different names and forms, but they are always formed by molecules with hydrophobic heads formed by fatty acids and a hydrophilic tail formed by glycerol.

Lipids store energy that will be quickly used by the human body to carry out metabolism.

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The answer is A whether the blastopore ultimately develops into a mouth or anus

i know because i just took a test and passed with this same question

Answer:

A. whether the blastopore ultimately develops into a mouth or an anus

Explanation:

The higher invertebrates are divided into two evolutionary lines named protostomes and deuterostomes based on whether the blastopore ultimately develops into a mouth or an anus. Blastopore is the first developement opening of archenteron (rudimentary alimentary canal) which appears during gastrula stage. If during embryonic development, the blastopore develops into mouth then the animal is known as protostome whereas development of anus from blastopore will make the invertebrate a deuterostome.

Invertebrates like annelids, arthropods and molluscs are examples of protostomes while echinoderms are examples of deuterostomes.

SciGame Gamma is a math game focusing on geometry concepts including mathematical rules and theorems for high school students.

SciGame Gamma is a mathematical game designed to improve students' understanding and skills in geometry. In this game, players are presented with geometric shapes and angles, and they have to solve problems related to area, perimeter, angles, and geometric properties.

Players must apply mathematical rules and theorems to correctly answer questions and progress through the game. By engaging with SciGame Gamma, students can enhance their geometric reasoning and problem-solving abilities in a fun and interactive way.

The correct answer is (d) It would have more carbon dioxide.

The green plants that is present in the environment utilizes the carbon dioxide present in the environment. This carbon dioxide is utilized in the process called photosynthesis, and as a result of that oxygen is released into the environment. If there would have lesser number of plants that carry out photosynthesis then the amount of carbon dioxide will increase in the atmosphere.

1. C. Metaphase (Chromosomes line up at the equator and spindle fibers attach to the centromeres of the chromosomes.)

2. F. Cytokinesis (Division of the cell cytoplasm once mitosis is complete)

3. E. Telophase (Before cytokinesis, 2 nuclear envelopes form around each set of chromosomes.)

4. A. Interphase (Before Mitosis begins, the cell prepares for division by increasing in size and duplicating the DNA.)

5. D. Anaphase (Sister chromatids are separated by spindle fibers and the 2 sets of identical chromosomes are pulled to opposite ends of the cell)

6. B. Prophase (Chromosomes condense the nuclear membrane breaks apart and spindle fibers form.)

During metaphase (C), chromosomes align at the equator, and spindle fibers attach to their centromeres, preparing for the subsequent separation.

Following mitosis, cytokinesis (F) takes place, dividing the cell's cytoplasm into two distinct daughter cells. In telophase (E), nuclear envelopes form around each set of chromosomes before cytokinesis begins.

Interphase (A) marks the period before mitosis, where the cell grows, duplicates its DNA, and readies itself for division. Anaphase (D) involves the separation of sister chromatids, pulled by spindle fibers to opposite ends of the cell.

Lastly, in prophase (B), chromosomes condense, the nuclear membrane breaks apart, and spindle fibers form, initiating the process of mitosis.

The sequence reflects the chronological order of events during cell division, illustrating the intricate and precisely orchestrated stages of the cell cycle.

Final answer:

Decantation is the process of pouring off the top layer to separate it from the bottom layer, while extraction involves transferring a desired substance from one solvent to another based on differences in solubility.

Explanation:

Decantation and extraction are both separation techniques used in the laboratory.

Decantation is the process of carefully pouring off the top layer of a mixture to separate it from the bottom layer. This is often used when one of the substances in the mixture is denser than the other. For example, in a mixture of oil and water, decantation can be used to separate the oil, which floats on top, from the water.

Extraction involves transferring a desired substance from one solvent to another solvent, based on differences in solubility. This is typically done using a separatory funnel, where the two immiscible liquids are mixed together and then allowed to separate into layers. The desired substance will preferentially dissolve in one of the solvents, allowing it to be separated from the other components of the mixture.

In the Calvin cycle, CO2 is transformed into carbohydrates. This happens in three stages: carbon fixation, reduction, and regeneration. It takes six cycles to produce a single glucose molecule.

In the Calvin cycle, carbon dioxide (CO2) molecules are used to produce carbohydrates like glucose (C6H12O6) thanks to the energy and reducing power of ATP and NADPH. This cycle in plants involves three stages. The first stage is fixation, where carbon dioxide is incorporated into an organic molecule by the enzyme RuBisCo.

Then, reduction occurs as the organic molecule is reduced with the help of NADPH. Finally, in regeneration, the cycle restarts as RuBP is regenerated. To produce a single glucose molecule, the Calvin cycle needs to be completed six times, until six carbon dioxide molecules are fixed.

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Answer:Theories may be changed over time as new information is discovered or new technologies are developed. New developments lead to changes in experimental methods, which provide information that may or may not support the existing theory. If the theory is still supported, it may be updated. If it is not supported, but the results are true and relevant, the theory may be replaced.

There are three types of carbon fixation in plants - C3, C4, and CAM fixation. C3 and C4 plants open their stomata during the day while CAM plants open stomata during the night. Mostly, plants fix carbon during the day. However, plants in arid locations, such as cactuses, use CAM carbon fixation because of adaptation to water deficiency. Their stomata are closed during the day and water loss is reduced. In the night when is colder, stomata open and carbon dioxide enters through stomata.

Answer:

In a cactus, carbon is fixed only during the night.

Explanation:

Answer: The correct answer for the fill in the blank is Phagocytes.

Phagocytes are the White blood cell which help in eliminating the chances of infection by attacking foreign particles in the body. They do this with the help of a process, which is called as phogocytosis.

In this process, they first ingest the harmul particles like bacteria ( in the form of food vacuoles, phogosomes) and then digest them using hydrolytic enzymes.

By doing so, they completely eliminate the chances of infection in the body.

Example of phagocytes- Macrophages, dendritic cells, and neutophils.

Movement of molecules through a membrane by filtration depends on hydrostatic pressure.

The correct answer is A. hydrostatic pressure.

Filtration is the movement of molecules through a membrane due to the force of pressure. In this case, hydrostatic pressure pushes molecules across a membrane. This process is commonly observed in the kidneys, where blood pressure pushes small molecules like water and solutes out of the blood and into the nephrons, which are specialized structures involved in urine formation.

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