Which of the following characteristics do not occur in prokaryotic cells?
A. cellular organization
B. thylakoid membranes within chloroplasts
C. oxygenic photosynthesis
D. anaerobic respiration
E. several circular chromosomes​

Answer:

True

Explanation:

Artificial resources can be used too.

Hope it helps.

lack of energy conservation I'm pretty sure

Answer:

I think the answer is substitution

Explanation:

Answer:

substitution :)

Explanation:

The physiological process being investigated is diffusion.

Diffusion is the movement of molecules from a region where they are more concentrated to one where they are less concentrated.

The net movement of molecules is from a region of high concentration to one of low concentration during diffusion.

In a cell, there are four different kinds of transport systems.

These are main active transport, secondary active transport, facilitated diffusion, and simple diffusion.

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Photosynthesis is the process made by autotrophs (plants and algae) by which they can take energy from the sun to form sugars such as glucose in order to use it as a source of energy, and also to store it as other molecules as starch for example. As this organisms are primary producers, the energy they take from the sun and convert into chemical energy (ATP) also is usable to all the organisms higher in the food chain. Moreover, during the process of photosynthesis they absorb CO2 and release O2.

The astronomical unit is a useful and simple to comprehend way for astronomers to express distances within solar systems.

Instead of measuring distances relative to the earth in general, the Copernicus technique is used to calculate distances between planets that are close to the sun.

The presumption that the planets have circular orbits, whereas in fact they follow elliptical orbits, is the key requirement for implementing this strategy.

To determine how far away close stars are, astronomers employ a phenomenon known as parallax.

Therefore, astronomical unit is useful to determine distances in the solar system.

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Answer:

D. Its different than the original strand!

Hope this helps :3

Explanation:

I just took the K12 test :)

Statements describing elements are :

1.) They integrate chemically to form new materials; they're "constructing blocks of matter".

2.) They can be damaged down with the aid of physical method.

3.) They can not be damaged down through chemical way.

4.) They're chemical combinations of less difficult varieties matter.

5.) They may be pure materials.

Chemical Element is a species of atoms which have a given quantity of protons of their nuclei, together with the natural substance consisting handiest of that species. in contrast to chemical substances, chemical elements can not be broken down into simpler substances by any chemical reaction.

An element is a essential object that can't be broken into smaller portions.There are about 100 elements, each with its personal form of atom.

In chemistry and physics, an element is a substance that cannot be damaged down by non-nuclear reactions. In computing and arithmetic, an element is a awesome piece of a larger machine or set.

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The type of bond formation where electrons are moved is called an D. Ionic bond.

After two or more atoms lose or receive electrons to create an ion, an ionic bond may develop. Metals that are losing electrons and nonmetals that are gaining electrons form ionic bonds. Ion bonds are formed when ions with opposing charges are drawn to one another.

The entire transfer of valence electron(s) between atoms is referred to as an ionic bond. It is a kind of chemical connection that produces two ions with opposing charges.

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Answer:

If the checkpoint mechanisms detect problems with the DNA, the cell cycle is halted, and the cell attempts to either complete DNA replication or repair the damaged DNA.

Explanation:

The G2 DNA damage checkpoint is an important cell cycle checkpoint in eukaryotic organisms that ensures that cells don't initiate mitosis until damaged or incompletely replicated DNA is sufficiently repaired. Cells that have a defective G2 checkpoint enter mitosis before repairing their DNA, leading to apoptosis or death after cell division.

The table is most likely to be comparing a community and an ecosystem. Thus, option B is correct.

When biotic and abiotic components are linked together by energy flow and through nutrient cycle it is called as an ecosystem. Ecosystem consist of the organisms and the physical environment they interact.

A community is said to be group of one or more species interacting in  the same geographical area at the same time. It is also known as biotic community or biological community.

Therefore, observation 1 shows community and observation 2 shows an ecosystem and option B is correct.

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Answer: I predict that human use of fossil fuels will affect their distribution over time because.

Explanation: Because if we keep on using fossil fuels over and over we eventually loose all of it because nearly 67% of the worlds reserves of crude oil are currently in the Middle East. So if we keep on using it well then there won't be anymore fossil fuels left for us, And if we keep using it, it will also slowly kill us off and also kill everything else around us.

Parasites that cause human disease can be classified into different groups based on their characteristics and the diseases they cause. Here are some examples:

1. Protozoa:

  - Example: Plasmodium falciparum

  - Disease: Malaria

  - Location in Host: Plasmodium parasites reside and multiply within red blood cells.

  - Mode of Transmission: Mosquitoes (Anopheles species) transmit the parasite to humans through their bites.

2. Helminths (Worms):

  - Example: Ascaris lumbricoides

  - Disease: Ascariasis

  - Location in Host: Adult worms reside in the small intestine.

  - Mode of Transmission: Ingestion of eggs present in contaminated food, water, or soil.

3. Nematodes (Roundworms):

  - Example: Enterobius vermicularis

  - Disease: Enterobiasis (Pinworm infection)

  - Location in Host: Adult worms inhabit the large intestine, while females migrate to the perianal area to lay eggs.

  - Mode of Transmission: Ingestion of infective eggs, which are usually transferred from contaminated surfaces or through direct contact with an infected person.

4. Trematodes (Flukes):

  - Example: Schistosoma mansoni

  - Disease: Schistosomiasis (Bilharzia)

  - Location in Host: Adult worms reside in the blood vessels surrounding the intestines and liver.

  - Mode of Transmission: Contact with water bodies infested with freshwater snails that release the parasite larvae, which can penetrate the skin of humans.

5. Cestodes (Tapeworms):

  - Example: Taenia solium

  - Disease: Taeniasis (Tapeworm infection)

  - Location in Host: Adult worms reside in the human intestine, where they attach to the intestinal wall.

  - Mode of Transmission: Consumption of undercooked or raw contaminated meat containing the larvae or ingestion of food or water contaminated with eggs.

It's important to note that this list provides only a few examples, and there are numerous other parasites that can cause diseases in humans. The diseases mentioned here represent a fraction of the many parasitic infections that can occur, and each parasite has its unique characteristics, geographical distribution, and mode of transmission. Proper diagnosis, treatment, and preventive measures are essential for managing these parasitic infections.

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Answer:

thyminene, T

adenine, A

guanine, G

cytosine, C

Explanation:

Answer:

Adenine, thymine, cytosine and guanine

Explanation:

Answer:

X-linked/Sex-linked recessive inheritance

Explanation:

The most likely mode of inheritance of the trait is an X-linked recessive inheritance.

The sex chromosome of a male is XY while that of a female is XX. The Y chromosome is hypothesized not to carry any allele ordinarily. Hence, a male child only needs to inherit one affected allele to become affected for recessive X-linked traits.

During gamete formation, the sex chromosome of the male segregates into X and Y gametes while that of the female segregates into X and X gametes. During fertilization, the X gamete of the male is usually inherited by the female while one of the X gametes of the female is usually inherited by the male.

Assuming a father is affected for an X-linked recessive trait, the affected X chromosome will be passed to a female child and such a child would be a carrier, rather than being affected since she requires the two X chromosomes to be affected in order to exhibit the trait.

The affected X chromosome is thus passed to her male child according to the law of inheritance of the sex chromosome. Hence, the grandson of the affected man inherits the trait through the daughter of the affected man.

Answer flipping a coin provide in accurate data because an experiment should be repeated multiple times with the same conditions. They should be using multiple tomato plants and the two fertilizers should go equally to the tomato plant and should not be flipping a coin

Explanation:

I have zero clue what the question wants but that’s a flaw

The nervous system's basic unit is a neuron. The cell body, dendrites, and axon make it up.

Cell Body (Soma): The cell body contains the nucleus and other neuron-essential components. It integrates and sends dendritic signals.

Dendrites: These branches receive input from other neurons or sensory receptors. They receive neuronal impulses as key input locations.

Axon: The long, thin axon conducts electrical signals from the cell body. The fatty myelin coating insulates and transmits signals. Axon terminals or synaptic terminals connect with other neurons or target cells through synapses.

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Answer:

b

Explanation:

Answer:

It’s just eye strain from the light emitted from your iPad.

Answer:

white blood cells called lymphocytes

Explanation:

There are two broad classes of such responses—antibody responses and cell-mediated immune responses, and they are carried out by different classes of lymphocytes, called B cells and T cells, respectively.

Answer:

c. climates of, carry warmer or colder water great distances.

Explanation:

Surface currents in the ocean can affect the temperature of the surrounding air and land areas they flow past, influencing regional climates. Warm ocean currents can bring warmer and more humid weather to the adjacent land, while cold ocean currents can have the opposite effect, cooling the air and land temperatures. This can have significant effects on local ecosystems, agriculture, and economies.

Answer: The answer is false

Some cells in the body have special jobs they are really good at doing. They are called specialized cells.

The human body has lots of tiny cells, and each of them is different and has a special job to do.  This group helps with important things needed to survive.

One type of cells carry oxygen and another type send electrical signals in our body. Specialized cells help the body do important things. Tissues: Groups of similar cells form tissues, such as muscle tissue, connective tissue, and epithelial tissue.

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Answer:

Explanation:

Mosley-slice

Meet Mosley, the hump-backed beast of burden with a big part to play in the new animated feature film from writer-director Kirby Atkins. Mosley introduces some curious creatures known as Thoriphants, domesticated animals with obvious intelligence who appear to have much more going on in their species' history than is apparent at first blush. The first trailer for the film, courtesy of Variety, comes out of Berlinale, and it's quite a compelling watch. It's full of heart, humor, and adventure, and teases philosophical complexity in less than two minutes. Keep an eye out for this one.

Atkins makes his feature directorial debut with Mosley having written for The BFG and Alvin and the Chipmunks: Road Chip, and has worked on visual effects for The Smurfs 2 and the Jimmy Neutron: Boy Genius franchise, some episodes of which he also directed. He also voices Mosley in this picture, lending his specific point of view to the title character both behind the camera and in his performance as the beleaguered creature as he sets out to discover his true nature.

Answer:

b

Explanation:

Answer:

The formation of the Universe.

Explanation:

A P E X

Krebs cycle occurs in the matrix of the mitochondria and requires oxygen.

Krebs cycle is a series of enzymatic reactions that occurs in all aerobic organisms. It involves the oxidative metabolism of acetyl units, and serves as the main source of cellular energy.

The Krebs Cycle is also called the citric acid cycle. After glycolysis breaks glucose into smaller 3-carbon molecules, the Krebs cycle transfers the energy from these molecules to electron carriers, which will be used in the electron transport chain to produce ATP.

Krebs cycle specifically requires the presence of oxygen to occur, hence, is termed an aerobic process.

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The statement 'every amino acid is specified by a single codon' about the genetic code is FALSE (Option C).

In conclusion, the statement 'every amino acid is specified by a single codon' about the genetic code is FALSE (Option C).

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One letter in each blank is 1. C. 1,2.  D. 2, 3. F. 6,4. I. next to

Fossils are the preserved remains or traces of organisms that lived in the past. They can be found in various forms, including bones, teeth, shells, imprints, and tracks. Fossils provide a window into the history of life on Earth and offer valuable insights into the evolution of different species over millions of years.

Fossils are typically formed when an organism's remains are buried in sediment or other materials, such as ash from volcanic eruptions. Over time, the sediment or other materials harden and eventually form rock, preserving the organism's remains. Fossilization can also occur through other processes, such as petrification or replacement, where the original organic material is replaced by minerals.

Fossils are important to scientists because they provide evidence of how life on Earth has evolved over time. By studying fossils, scientists can learn about the anatomy, behavior, and habitats of extinct species, as well as how they are related to modern organisms. Fossils also provide a record of major events in Earth's history, such as mass extinctions and the evolution of different ecosystems.

1. C. 1

2. D. 2

3.  F. 6

I. next to

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The statement suggests that the fossil found in layer 7 is approximately 1 million years old. Furthermore, there are 3 layers that are older than layer 7, and 2-3 layers that are younger than layer 7.

This information can be used to infer the relative ages of the rock layers, as older rocks are typically found below younger rocks due to the principle of superposition.

The principle of superposition states that in an undisturbed sequence of sedimentary rocks, the oldest rocks will be at the bottom, while the youngest rocks will be at the top. Therefore, we can conclude that the 3 layers that are older than layer 7 are located below it, while the 2-3 layers that are younger are located above it.

The statement also mentions that younger rocks are deposited above older rocks. This refers to the process of sedimentation, where new layers of sedimentary rock are deposited on top of older layers over time. This process can help to explain the relative ages of the rock layers and the fossil found in layer 7.

Overall, this statement provides some basic information about the relative ages of the rock layers and the fossil found in layer 7, and how they can be used to understand the geological history of the area.

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