What organelle would you not find in a plant cell? Chloroplasts,centrioles,central vacuole,or cell wall?

Most articles pass right through the atom, this means that most of the atom is an empty space.

An atom is described as a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electrons.

Protons and neutrons make up the core nucleus of an atom, which is encircled by an electron cloud. In relation to the size of the atom as a whole, the nucleus is exceedingly small.

As a result, the electrons surrounding the nucleus are the primary target of interactions when particles or even light pass through an atom. The majority of the atom's remaining space, which includes the nucleus, is vacant.

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Answer:

The purpose of natural selection is not a conscious or intentional one, as it is not driven by a specific goal or purpose. Instead, natural selection is a fundamental process in biology that acts on heritable traits within populations over generations. It is a key mechanism of evolution.

Explanation:

The primary outcome of natural selection is the adaptation of organisms to their environment. Individuals with traits that are advantageous in a particular environment are more likely to survive, reproduce, and pass on those beneficial traits to their offspring. Conversely, individuals with traits that are disadvantageous are less likely to survive and reproduce, leading to a reduction in the frequency of those traits in the population over time.

Natural selection, therefore, acts as a filter that shapes the characteristics of populations, favoring traits that enhance an organism's survival and reproductive success in a given environment. Over many generations, this process can lead to the development of new species or the modification of existing ones, as populations accumulate adaptations that allow them to thrive in different ecological niches.

It's important to note that natural selection does not have an end goal in mind, nor does it necessarily lead to the "best" or most advanced organisms. Instead, it is a consequence of the interactions between organisms and their environment, constantly shaping and refining the traits of living beings based on their ability to survive and reproduce.

Answer:

Neil Shubin bases his argument that the anatomy of Tiktaalik is relevant to that of humans by discussing specific features of the anatomy of Tiktaalik that vary from typical fish anatomy and correspond to features of the human body. For example, he points out that Tiktaalik has a neck that is able to bend independently of the rest of the body, unlike fish, and like all terrestrial vertebrates, including humans. Therefore, the evolutionary history of humans can be traced to an organism similar to Tiktaalik, resulting in the concept of the "inner fish."

Explanation:

Answer:

hydrogen, pebbles, oxigen, carbon.

Explanation:

someting that is abiotic is someting that isn't living

Answer: Volcanic materials ultimately break down and weather to form some of the most fertile soils on Earth, cultivation of which has produced abundant food and fostered civilizations. The internal heat associated with young volcanic systems has been harnessed to produce geothermal energy

Explanation:

Where the water table is 100 metres below the surface is the best place to look for groundwater.

Answer: Five feet is the right response. The top layer of porous material is referred to as the unsaturated zone; this is the layer that is rarely filled with water unless it has recently rained.

Aquifers are the source of the majority of groundwater, including a sizeable portion of our drinking water. A well must be made by boring a hole that extends to the aquifer in order to get this water. Aquifers can discharge naturally at springs and in wetlands in addition to at man-made locations like wells.

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Answer:

B

Explanation:

In the stomach, proteins are broken down into smaller molecules by hydrochloric acid and an enzyme called pepsin. The hydrochloric acid creates an acidic environment in the stomach, which helps to denature the proteins and make them more accessible to the pepsin enzyme. Pepsin then breaks down the proteins into smaller peptides and amino acids, which can be absorbed into the bloodstream through the small intestine.

Answer:

It takes a million generations or more to evolve lasting changes, a study found

Explanation:

the answer would probably be a after multiple generations

Answer:

A. RNA polymerase is always present in a cell, but sometimes present in viruses.

B. tRNA is always present in a cell, but Never present in viruses

C. Ribosomes are always present in a cell, but Never present in viruses.

D. Genes are always present in a cell, but always present in viruses..

Explanation:

A. RNA polymerase is always present in a cell, but sometimes present in viruses. RNA polymerase is the enzyme responsible for transcription in eukaryotic cells, it is the enzyme that stimulates transcription, that is, the passage from DNA to RNA. All RNA viruses encode in their genome an RNA-dependent RNA-polymerase (RdRp) that acts as a catalytic subunit, along with other viral and cellular proteins, in the replication of the viral genome. B. tRNA is always present in a cell, but Never present in viruses Transfer RNA is a type of ribonucleic acid that is responsible for transporting amino acids to ribosomes where, according to the sequence specified in a messenger RNA (transcribed, in turn , from DNA), proteins are synthesized. C. Ribosomes are always present in a cell, but Never present in viruses. Ribosomes are responsible for the granular appearance of the cytoplasm of cells. It is the most abundant organelle, several million per cell. Viruses do not have cytoplasm or ribosomes (elements necessary to form a cell), so they cannot multiply on their own and they need to infect the cell of another organism to do so.D. Genes are always present in a cell, but always present in viruses.Genes are the storage units of genetic information, they are fragments / segments of DNA that encode a specific functional product. Viruses are small pieces of RNA (ribonucleic acid) or DNA (deoxyribonucleic acid), many are encapsulated in an envelope made of base of proteins known as capsid, others protect their genetic material with a membrane or envelope derived from the cell they infect and some others also surround their capsid with a cell membrane. RNA viruses bring with them their own genetic information copying machines (eg, RNA polymerase enzyme) or possess genes (genetic information) that produce the proteins required to assemble the copying machines within the cell that they infect, thereby which makes them independent of the cellular machinery and capable of infecting cells that are not actively reproducing.

Some prey species use to scare off predators by puffing up (blowfish), spreading their wings (peacocks), or mimicking a predator Behavioral strategies are the solution.

Predators include weasels, hawks, wolves, mountain lions, and grizzly bears. Because they are carnivores, predators only eat meat. Some predators, like coyotes and bears, are also scavengers, which means they will consume the remains of creatures they haven't personally hunted.

Various Predators

Carnivores Herbivores are their prey, while carnivorous predators kill and devour them. These include creatures that eat plants and plant products, such as cows, buffaloes, goats, sheep, and deer.

Parasites

Small Predators and Large Predators

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The specific DNA sequence where RNA polymerase binds and initiates transcription is called the promoter region.

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When biological material becomes trapped in a molecular bubble  it can form various structures known as microspheres or protocells.

Microspheres are tiny spherical structures composed of organic molecules, such as proteins, lipids and nucleic acids. these molecules self-assemble to form a closed, membrane like boundary that encloses the biological material inside.

Microspheres can exhibit some properties of living cells, such as the ability to absorb and retain certain substances  but they lack the complex internal organization and metabolic processes found in actual cells

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Answer:

Superior mesenteric artery.

The primary source of energy for the body is a form of sugar called glucose. It travels to cells all throughout the body after being absorbed into circulation from the small intestine.

Other chemicals that enter the circulation through the small intestine include the following:

Proteins' building components are amino acids.

The lipids' building components are fatty acids.

minerals and vitamins

Water

In an adult, the small intestine is a muscular tube that is roughly 20 feet long. It is situated in the belly, above the large intestine, and below the stomach. The bulk of digestion and nutritional absorption from meals occurs in the small intestine.

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Answer:

Many factors influence the size of a population. Food, water, shelter, predation, and density are all things that can allow a population to grow or cause it to decline.

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Answer:

Its C

Explanation:

-Ella-

The experiment performed by student only creates the vortex, caused by the interaction between the liquid and its movement in the jar. Therefore, none of the statements are true.

The experiment performed by student involves mixing water, dish soap, and vinegar in a jar, thereby, creating a solution having a lower surface tension than plain water. Due to swirling of the jar, the liquid inside the jar spins creates a difference in surface tension between the center and the edges of the jar.

This effect is known as the vortex, caused by the interaction between the liquid and its movement in the jar.

The experiment by the student does not demonstrate the interaction between Earth systems. Blizzards and hurricanes occur due to interaction between the atmosphere and the Earth's surface, while tornadoes and thunderstorms occur due to atmospheric convection currents.

Therefore, only vortex is caused by the interaction between the liquid and its movement in the jar.

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The criteria support the statement in the prompt would be B, D E

B) Initially, there was allelic variation in the iguana population. - This is important because natural selection can only occur when there is variation among individuals in a population.

D) In three generations, the allelic frequencies in the population changed. - This is also important because natural selection involves changes in allele frequencies in a population over time.

E) Iguana that had the ww genotype were more apt to survive in the changing environment. - This statement does not support the prompt because it suggests that individual iguanas with a certain genotype are more likely to survive, which is not the same as saying that natural selection acts on populations rather than individuals.

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Answer:

The Correct answers are A,B,D,E

Explanation:

Trust me, I did the Usa Test prep.

Answer:

The correct statement about the hemoglobin and myoglobin is as follows:

1. Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind only one oxygen molecule.

3. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron.

4. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom.

5. Heme is composed of an organic protoporphyrin component and a metal atom.

6. Each iron atom can form six coordination bonds: One of these bonds is formed between iron and oxygen.

food safety is a risk based process is true

Answer:

0.45

Explanation:

WHY BECAUSE IT IS 49 ALLIES

The type of leukocyte responsible for antibody production is shown by option D.

We know that a leucocyte is a white blood cell. There are three types of blood cells that we have in the human body and these kinds of blood cells are;

White blood cells

Red blood cells

Blood Platelets

Now we know that the white blood cells are the ones that re responsible for the fighting of the organisms that tend to invade the body. The shape of the leucocytes that act as antibodies also reflects the function of the blood cells.

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Answer:

A

Explanation:

a. By increasing and decreasing volume

Answer:

flatten out, less waves, become more calm, no more tides

Explanation:

Answer:

Yes, the correct answer is D: to prevent widespread diseases in developing countries without using syringes

Explanation:

I got it right in edg 2020

hope this is of help :)

The purpose of using genetic engineering to develop edible vaccines is to prevent widespread diseases in developing countries without using syringes.

Edible vaccines are effective as a delivery vehicle for immunization because adjuvants that enhance the immune response are not required. Edible vaccine can elicit mucosal immunity, which is not observed in traditional vaccines.

Thus, the option "D" is correct.

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Answer:

Hypothesis: Day light produces more eggs laid by chickens

independent: Light

control: amount of day light

dependent: Amount of eggs

In a neuron, the (1) nucleus is found inside the (2) cell body.

The cell body of a neuron, also known as the soma, contains the nucleus. It is the main part of the neuron where essential cellular functions occur, including protein synthesis and energy production.

The nucleus, which is enclosed by a membrane called the nuclear envelope, contains the genetic material of the neuron in the form of DNA. It plays a vital role in regulating the activities of the neuron and controlling the synthesis of proteins needed for various cellular processes.

The cell body serves as the control center of the neuron, integrating incoming signals from dendrites and initiating the transmission of signals along the axon.

It contains various organelles, such as mitochondria for energy production, ribosomes for protein synthesis, and the endoplasmic reticulum for the synthesis and transport of proteins.

The nucleus, as the site of DNA storage and transcription, is crucial for maintaining the genetic information necessary for the neuron's structure and function. Overall, the nucleus within the cell body plays a critical role in coordinating the activities of the neuron and supporting its overall functioning within the nervous system.

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Question

Neurons are the building blocks of the nervous system. They process and transmit signals. In a neuron, the (1)____ is found inside the (2)_____.

1. Cell membrane

Myelin Sheath

Nucleus

2. Axon

Cell Body

Dendrite

Answer:

1. Low

2. Eutrophication

Explanation:

Hypoxic systems are characterized as LOW oxygen areas and form for my destruction to the nitrogen cycle through the process of EUTROPHICATION.

These low oxygen areas are known as DEAD ZONE and they came as a result of increment in chemical nutrients such as nitrogen and phosphorus.

The process of EUTROPHICATION also lead to lead algae bloom; a rise in the population of some specific phytoplankton.

Answer:

Compost, Manure, Organic Matter, Loam

Explanation:

I'm guessing that Organic matter will be the correct answer, but I gave you a few options