A major characteristic of the arthropods is the presence of.

Answer:

Prokaryotes lack a true nucleus with well defined nuclear membrane and other membrane-bound organelles. Mitochondria are the double membrane bound organelle and hence is absent in prokaryotes. Mesosome is an extension of the cell membrane presence in the cytoplasm as infolding and serves to increases surface area and as a site for cellular respiration in prokaryotes. Histones are positively charged proteins that serve in the packaging of negatively charged eukaryotic DNA but are absent in prokaryotes.

So, the correct answer is option A.(DNA is complexed with histones).

The statement which is not true for prokaryotic cell is that they are all parasitic. Thus, the correct option is C.

Prokaryotes are the organisms whose cells lack a nucleus and other membrane-bound organelles. Prokaryotic organisms are divided into two distinct groups which are the bacteria and the archaea, which scientists believe to have the unique evolutionary lineages. Most of the prokaryotes are small in size, single-celled organisms which have a relatively simple structure.

Examples of prokaryotic organisms are blue-green algae, bacteria and mycoplasma. Among the prokaryotes, bacteria are the most common and multiply very fast.

Therefore, the correct option is C.

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Your question is incomplete, most probably the complete question is:

Which one of the following is not true of prokaryotes ?

(a) They are living cells

(b) They lack a nucleus

(c) They all are parasitic

(d) They are both archaea and bacteria

Answer:

Potential Energy.

Explanation:

Potential energy, stored energy that depends on different parts of the system's relative position. When compressed or stretched, spring has more potential energy.

A stainless steel ball has more energy than it had when it fell to the world. It is able to do more work in the raised position.

Potential energy is a system's property and not a single body or particle. The earth-consistent system and raised ball, for instance, have greater potential energy as the two are more distinct.

If the hawks are increased in this model, the grass will increase in the food chain.

The model that we can see in the question  can eb seen to represent a food pyramid with some organisms at the apex and some underneath.

This is referred to as the series of exchanges of food-based substance and energy from one creature to another.

The main consumers, those that eat the grass, will decline as hawk populations rise. Therefore, there will be more grass because of this.

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Answer:

The brown version of gene 1 is dominant over the blue one. Dominant means that if at least 1 of your two copies is brown (Bb), then you will have brown eyes. Geneticists represent the different versions of the eye colour gene as B for brown and b for blue (the capital letter is the dominant, the lowercase, recessive).

Explanation:

The kingdom of the organism in this scenario is referred to as a protist because it contains certain features such as being unicellular and possessing what we call DNA in its nucleus etc and is denoted as option D.

This is classified as an eukaryotic organism which does not belong to the animal, plant, or fungus family. it is however unicellular and has the ability to produce food on their own which is responsible for their survival in the ecosystem.

These organisms produce food through the process known as photosynthesis and examples include algae, diatoms etc. They also have DNA enclosed in their nucleus which is why they are referred as being eukaryotic.

This is therefore the reason why protist was chosen as the most appropriate choice.

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The seven epochs of the Cenozoic Era, in order from the most recent to the oldest, are:

Holocene

Pleistocene

Pliocene

Miocene

Oligocene

Eocene

Paleocene

The Cenozoic Era is divided into three periods: the Paleogene, Neogene, and Quaternary. Each of these periods is further divided into epochs. The following are the seven epochs of the Cenozoic Era, in order from the most recent to the oldest:

Holocene: This epoch began about 11,700 years ago and continues to the present day. It is the most recent epoch of the Cenozoic Era and is characterized by the emergence of modern human civilizations and the current interglacial period.

Pleistocene: This epoch began about 2.6 million years ago and ended about 11,700 years ago. It is characterized by the emergence of humans, the development of modern mammals, and the last ice age.

Pliocene: This epoch began about 5.3 million years ago and ended about 2.6 million years ago. It is characterized by the emergence of many modern mammal families, such as cats, dogs, and elephants.

Miocene: This epoch began about 23 million years ago and ended about 5.3 million years ago. It is characterized by the emergence of many modern mammal genera, such as horses, deer, and whales.

Oligocene: This epoch began about 33.9 million years ago and ended about 23 million years ago. It is characterized by the diversification of many modern mammal orders, such as primates and rodents.

Eocene: This epoch began about 56 million years ago and ended about 33.9 million years ago. It is characterized by the diversification of many modern mammal families, such as the early primates and the first horses.

Paleocene: This epoch began about 66 million years ago and ended about 56 million years ago. It is characterized by the recovery of the Earth's ecosystems after the mass extinction that occurred at the end of the Cretaceous Period.

In summary, the seven epochs of the Cenozoic Era, in order from the most recent to the oldest, are: Holocene, Pleistocene, Pliocene, Miocene, Oligocene, Eocene, and Paleocene. Each epoch is characterized by distinct geolog

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Answer:

yes it does

Explanation:

the definition on "community" is a group that contains multiple populations

Answer:

Explanation:

Animals that reproduce sexually create offspring that are both genetically similar and unique.

Sexually reproducing species may find it more difficult to live in changing environments than asexually reproducing organisms do since all of their offspring share a common genetic heritage and are genetically unique from each other. Asexual reproduction makes a genetically identical copy of the parent organism (a clone ).

Asexual reproduction, in contrast to sexual reproduction, only adds to genetic diversity in the population if a random mutation in the organism's DNA is passed down to the offspring. Children with two parents have a unique genetic make-up as a result of sexual reproduction. When two haploid gametes join during fertilization, a diploid zygote is produced during sexual reproduction.

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Answer: the number of protons is 35 because the number of protons is equal to the atomic number which is equal to the number of electrons hence no need to waste your time on that.

Neutrons is the atomic mass - protons

81-35=46.

From my above explanation the number of electrons is equal to 35.

Explanation:

Answer:

B. Radiation which would go back out into space is absorbed by these gases

Explanation:

Answer:

fossil geologic time

Explanation:

The technological methods used to assess phylogenetic relationships at the scale of molecular genetics are called molecular phylogenetics.

Phylogenetics refers to the study of evolutionary relatedness among different species. It is the process of developing hypotheses of evolutionary relatedness among groups of organisms, known as phylogenies. It involves analyzing their similarities and differences based on the morphology, genes, and behavior of the organisms. Molecular phylogenetics is a branch of biology that deals with the study of evolutionary relationships among organisms based on their molecular genetic characteristics. This method utilizes molecular sequences of DNA and RNA to infer phylogenetic relationships between different species. This technique provides a more precise estimation of evolutionary relationships between different organisms. Molecular phylogenetics uses several technological methods to assess the relationships between different organisms. Some of these techniques include: Polymerase Chain Reaction (PCR)DNA SequencingRestriction Fragment Length Polymorphism (RFLP)Hybridization techniques Phylogenetic analysisConclusionMolecular phylogenetics is a field of biology that deals with the study of evolutionary relationships among organisms based on their molecular genetic characteristics. It involves using several technological methods to assess phylogenetic relationships between different species. Some of these methods include Polymerase Chain Reaction (PCR), DNA Sequencing, Restriction Fragment Length Polymorphism (RFLP), Hybridization techniques, and Phylogenetic analysis.

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The major lipids of plasma membranes. are called b. Phospholipids, which form a bilayer in the cell membrane.

The phospholipid bilayer in the cell membrane is an arrangement of phospholipids in order to form biological barriers that allow the selective movement of substances across the internal medium of the cell and the surrounding environment.

A phospholipid is composed of a phosphate polar head and fatty acids that are located on the internal side of the cell membrane because it is hydrophobic (polar phosphate heads are in contact with surrounding water which stabilizes the cell membrane).

Therefore, with this data, we can see that the phospholipid bilayer in the cell membrane is arranged in the sense that the phosphate heads of these biomolecules are located on the outside and fatty acids inside.

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Answer:

Out of the choices given, the most important in determine the plant and animal population that can exist in an area is the temperature. Both plants and animals need a certain temperature to survive in certain areas. The correct answer is D, temperature.

Explanation:

The base sequence that is complementary to the DNA sequence TTAAGGCC is:

D. TTAACCGG.

In DNA, the base pairs adhere to specific rules: adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). Therefore, the complementary sequence to TTAAGGCC will have adenine (A) pairing with thymine (T) and guanine (G) pairing with cytosine (C) in the opposite strand.

The complementary sequence TTAACCGG has adenine (A) pairing with thymine (T) and guanine (G) pairing with cytosine (C) for each corresponding base in the original sequence, resulting in a complementary match.

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The muscles that have a triangular arrangement, spreading over a broad area and converging at a thick central tendon, are the trapezius muscles.

Large and superficial in the back, the trapezius muscle has a trapezoid-like shape. They are located in the upper back and neck region. It extends laterally to the spine of the scapula and downward from the external protuberance of the occipital bone to the lower thoracic vertebrae. Upper, middle, and lower groupings of fibres make form the trapezius.

The primary role of the trapezius is to regulate the scapula during movements of the shoulder and upper limb while also stabilizing it in its natural position.

The three parts of trapezius muscles:

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The experiment carried out by Avery, MacLeod, and McCarty in 1944 established that DNA is the genetic material that carries genetic information. This experiment was conducted on the bacterium Streptococcus pneumoniae, which is a pathogen that causes pneumonia in humans.

This bacterium can exist in two forms, a rough strain and a smooth strain. The S strain is surrounded by a polysaccharide capsule, while the R strain does not have a capsule. When mice were injected with the S strain, they developed pneumonia and died.

On the other hand, the mice injected with the R strain were healthy.The researchers used enzymes to degrade proteins, RNA, and DNA from the heat-killed S strain. They then added the three enzymes to the living R strain and found that the transformation still occurred, indicating that none of the enzymes destroyed the transforming ability.

They then repeated the experiment with different enzyme combinations and found that when DNase was added to the living R strain, the transformation did not occur. This finding led them to conclude that DNA is the genetic material that carries genetic information.

Therefore, the fact that the transforming capacity of the IIIS cell extract was not abolished by treatment with RNase proves that RNA does not function as the genetic material in the IIIS cells (Diplococcus pneumoniae). Hence, option (D) is the correct answer.

This experiment provided important evidence that DNA is the genetic material that carries genetic information and paved the way for future genetic research.

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Answer:

The type of coffee

Explanation:

Different types of coffee contain different amounts of caffeine. This makes it important to use only one type of coffee

Constant is the one thing that does not change. If you are experimenting to see if they test better with coffee, you'll need to give each student the same amount of coffee throughout each trial.

Baltes' lifespan perspective  that development is lifelong, multidimensional, multidirectional, plastic, contextual, and multidisciplinary.

Many disciplines are capable of make a contribution critical ideas that combine knowledge, which can also additionally in the end bring about the formation of a brand new and enriched expertise of improvement throughout the lifespan.

Baltes is regarding the truth that a complicated interaction of things impact improvement throughout the lifespan, such as biological, cognitive, and socioemotional changes. Baltes argues that a dynamic interplay of those elements is what affects an individual’s improvement.

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False. The new plant produced by layering does not have to remain attached to the stem of the original plant.

Layering is a method of vegetative propagation of plants in which a part of a plant such as a stem or a branch is pegged to a substrate for that part to develop its own root and establish before it is eventually cut off and transplanted to become a new plant.

Layering can be done in 5 ways. These include

Whatever the method that is used, the new plant only remains attached to the original plant for some time after which it is usually detached or cut off to become an individual plant on its own.

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Answer: it’s false I think?

Explanation: I hope this helps!!!

During bacterial transformation, Both strands are brought into the bacterial cytoplasm; one strand is degraded and the other is incorporated into the host chromosome during bacterial transformation.

Bacterial cells take in foreign DNA and integrate it into the host chromosome as part of the transformation process. The bacterial cell first takes up the fragments of double stranded DNA and then enzymes break down one of the strands.

The foreign DNA is then transferred into the bacterial genome through recombination of the remaining single stranded DNA fragment with the host chromosome. It is possible to introduce new traits or change already existing ones in bacteria using this procedure which is significant in genetic research.

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Option 1 is Correct. The most likely result of significantly raising the activity of camp phosphodiesterase (camp pde) throughout the cell is that G alpha cannot be activated.

The state of the receptor is altered when a ligand known as an agonist stimulates it. In order to activate G alpha, GTP must be exchanged for the bound GDP after G alpha separates from the receptor and G beta-gamma. The next step for G alpha is to activate more cell molecules.

The GTP for GDP exchange on the G protein alpha subunit, which is the rate-limiting step in the activation of all downstream signaling, activates G proteins, which are molecular switches.

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Correct Question:

what is the most likely effect of greatly increasing the activity of camp phosphodiesterase (camp pde) throughout the cell ? group of answer choices

1. g alpha cannot be activated.

2. signaling via the g beta/gamma is blocked.

3. pkg cannot be activated.

4. the catalytic subunits of pka cannot dissociate from the regulatory subunit.

5. camp-mediated signaling is not affected.

Answer:

B. Hypothesis

Explanation:

Hypothesis is an explanation about a phenomenon that is proposed. This explanation is further subject to a test to make a scientific hypothesis.

scientific hypotheses is usually based on previous observations that is not satisfactorily explained with available scientific theories but need further clarifications.

After an hypothesis is formulates it is then subjected to test to ascertain if the hypothesis will be accepted or rejected. When rejected further investigation can be carried out to be sure of the outcome.

Answer:

c because these graphs are showing how the continents separated

Explanation:

Sand dunes are an integral part of coastal ecosystems, and they serve a variety of important functions. When people visit the beach, it's essential to stay off the sand dunes to help preserve these habitats, prevent erosion, and maintain safety. Here are some details to support the importance of staying off sand dunes:

## Preservation of Natural Habitat

Sand dunes are home to many plant and animal species that rely on the unique environment they provide. The dunes offer a stable environment that's resistant to erosion and salt spray, and they provide a habitat for plants and animals that have adapted to living in this type of environment. When people walk or play on sand dunes, they can trample plants, destroy animal habitats, and disturb the natural balance of the ecosystem. Over time, this can lead to the loss of plant and animal species that depend on these habitats to survive.

## Prevention of Erosion

Sand dunes play a crucial role in protecting the beachfront from erosion. They act as a natural barrier between the ocean and the land, absorbing the impact of waves and tides. This helps to protect the beachfront from storms, high tides, and other natural hazards. However, when people walk or play on sand dunes, they can cause erosion, which can lead to further damage to the beachfront. Over time, this erosion can result in the loss of beachfront property and damage to nearby infrastructure.

## Safety

Sand dunes can be unstable and unpredictable, and they can collapse or shift unexpectedly. When people walk or play on sand dunes, they can cause the sand to shift, which can create hidden holes or drops that can be dangerous. Additionally, sand dunes often have steep inclines that can be difficult to navigate, particularly for children or people with mobility issues. By staying off the sand dunes, visitors can help to maintain a safe environment for themselves and others.

In conclusion, staying off sand dunes is essential for preserving the natural habitat, preventing erosion, and maintaining safety at the beach. Visitors should use designated paths and walkways to access the beachfront, and avoid causing damage to the ecosystem. By respecting the environment and staying off the sand dunes, we can help to protect these valuable habitats for future generations.

Independent Variable: Fertilizer

Dependent Variable: Plant Growth

Hypothesis: Giving plants fertilizer will help them grow faster than plants with no fertilizer.

Controls: Type of plant, watering routine, temperatures, amount of sunlight.

Explanation:

Independent variable always modifies the dependent variable.

Dependent variable always changes based off of the independent variable.

The hypothesis must be a statement that can be tested with an experiment.

Control variables should stay the same throughout the experiment in order for the experiment to be testable and accurate.

Answer:

it comes from pipes underground but the real source is nature

Answer:

wind whips it up and gravity pulls it down.

Explanation:

The name of the cells that are used for vision in the dark or dim light are called rod cells. These specialized cells are located in the retina of the eye and contain a pigment called rhodopsin, which is sensitive to low levels of light. When light enters the eye and reaches the rod cells, the rhodopsin molecule breaks down and triggers a chemical reaction that sends signals to the brain, allowing us to see in low light conditions.

Rod cells are most concentrated in the peripheral areas of the retina and are responsible for our ability to see shapes and movement in low light conditions, but not for color vision or visual detail. In contrast, cone cells are responsible for color vision and visual detail and are most concentrated in the central portion of the retina. Together, rod and cone cells work together to provide us with a complete picture of the world around us, even in varying light conditions.

In summary, the name of the cells used for vision in dark or dim light conditions is "rod cells." These cells are highly sensitive to low light levels, allowing us to see in less-than-ideal lighting situations and providing peripheral vision and motion detection. Rod cells, along with cone cells, work together to help us perceive the world around us.

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Answer: Because they experience microscopic damage, which, in this context, is a good thing. In response, the injured cells release inflammatory molecules called cytokines that activate the immune system to repair the injury. This is when the muscle-building magic happens.

Explanation: