which of the following is not a major difference between dna and rna? answer: which of the following is not a major difference between dna and rna? dna is found in the nucleus and cytoplasm, but rna is only found in the nucleus dna is a double-stranded helix and rna is a single-stranded helix dna uses deoxyribose and rna uses ribose as their respective pentose sugars dna contains thymine, but rna contains uracil instead

Answer: Chemical synapses comprise most of the synapses in your body. In a chemical synapse, a synaptic gap or cleft separates the pre- and the postsynaptic cells. An action potential propagated to the axon terminal results in the secretion of chemical messengers, called neurotransmitters, from the axon terminals.

Answer:

ORNITHOPHILY

Explanation:

When pollination is by birds, it's called Ornithophily.

(hummingbirds and sunbirds could be an example)

brainliest would be appreciated :)

Answer: Ornithophily

Explanation:

Answer:

A- cellular respiration : carbon dioxide

Explanation:

This question is looking for byproducts ie Photosynthesis produces Oxygen. Cellular respiration produces Carbon Dioxide. Hopefully I was able to help you!

Arac always associates simultaneously with two distinct regions on the Arac operon. these regions are the initiator and the operator.

The structural gene is repressed in the absence of arabinose by the dimer AraC protein, which binds to araI1 and araO2 and causes DNA to loop, preventing RNA polymerase from connecting to the ara operon's promoter and preventing transcription.

Arabinose controls how AraC binds to DNA and produces dimers by acting as an allosteric regulator. Keep in mind that the proteins of the AraBAD operon catabolize the sugar arabinose. In the presence of arabinose, AraC is strongly bound when E. coli are present.

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The complete question is -

A graduate student is studying the expression of the arac protein in bacteria grown in arabinose-poor conditions. she notices that in these cells, arac always associates simultaneously with two distinct regions on the ara operon. these regions are the_____ and the____.

Answer:

It is a large opening through which the water containing waste exits the sponge. (got it correct on my quiz)

Explanation:

The osculum is the site of waste exit.

The osculum is an excretory framework in the living sponge, consisting of a large opening to the outside through which the water current exits after passing through the spongocoel.

Sponges, members of the phylum Porifera, are a basal animal clade that is related to diploblasts.

They are multicellular organisms with pores and channels that allow water to circulate through their bodies, which are made up of jelly-like mesophyll sandwiched between two thin layers of cells.

The osculum is a large opening that forms the sponge's excretory tract. Contractile myocytes regulate the volume of water expelled from the sponge by determining the size of the osculum opening.

Sponge bodies have multiple pores called ostia that allow water to enter the sponge in addition to the osculum.

Porocytes, single tube-shaped cells that act as valves to regulate the flow of water into the spongocoel, form ostia in some sponges.

Thus, this is the main purpose of the osculum in sponges.

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Answer:

g.gmr vgrkmg vrjvd,s;vrvmvfd vf v  vurf;a;fphrgins;lzvmdsa[cdfoefpdd  p]ncjpcxsxncnpcmscpdzmxmfbrfyspdfdofhqpfavnjvipowqcpndp v[qcbovvbrqwpfebv lacsapfryhtgoirurgw[qfbfrbvfcnvr0vpqnprpicdno;bwpvno;vdp

Explanation:

rrmgtgkwggtugiwelwrogir;wre3irppwufooe4turjeowyeorut94w3ur3r93rutio22ofidjfdfdlau44eogrifkg5gyreu5uwqgkoqasswxsaslbkfbslsnnsvofs  noivfvbofb fdvnvvwiwrgrkbfs lb lxngjdckdrjgkakofbnbbtruufvnfbkf,fbhtrvfhvfknbtvjvjlv.vnvsvjivfdivfbnhyofsnvfghffn ufvnsnowfuhrnvfjkksvh n gvsicefh hr7gjshvythdisiqhdvjxksfyru ueyfhwiiwhfjfoftyfjkcei573ikdgjskqpqlzueoq,mncbx,z.qwertyuioopbdfvxnvd km  c  ca  fvf. v jld

Answer: because it excretes water, salt, and urea from the body. Because it eliminates waste products by sweating.

Explanation: Skin is also considered as excretory organ because it secretes sweat and salt from our body in the form of liquid.

Genetic engineering is possible because of gene manipulation or gene editing.

Genetic engineering is made possible through gene manipulation, which involves modifying the DNA of organisms.

Gene manipulation techniques such as gene editing, including CRISPR-Cas9, allow scientists to selectively modify or insert specific genes in an organism's genome.

This enables precise control over genetic traits, such as introducing beneficial traits or removing undesirable ones.

By manipulating genes, scientists can modify the characteristics of organisms, including plants, animals, and microorganisms, to enhance traits like disease resistance, productivity, or nutritional value, leading to advancements in agriculture, medicine, and various other fields.

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The teeth in the permanent dentition that are best suited for cutting or nipping off pieces of food are the incisors and canines. These teeth have sharp, thin edges that are designed for biting and tearing food.

In particular, the central incisors and lateral incisors are most effective for cutting and biting off smaller pieces of food, while the canines are better suited for tearing and shredding larger pieces of food. The premolars and molars in the permanent dentition are more specialized for grinding and crushing food, and are not as effective at cutting or nipping off small pieces.

The deciduous teeth are not as well-suited for cutting or nipping off food as the permanent teeth, as they are smaller and less sharp, and are primarily designed for chewing and grinding food as babies transition from a liquid to solid diet.

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Full Question: Which teeth in the permanent dentition are best suited for cutting or nipping off pieces of food, and how do they differ from the teeth in the deciduous dentition? Please describe the arrangement and types of teeth in both the deciduous and permanent dentition, and explain which specific teeth are best suited for cutting or nipping off pieces of food, and why.

Answer:

The answer is B

Explanation:

I had it on usatestprep :)

Answer:

The answer is C - The part underwater

Answer:

C- the part underwater

Explanation:

A fanlike diagram and a cladogram are both types of visual representations used in evolutionary biology to show relationships among organisms. However, they differ in terms of the information they convey and their visual structure.

A cladogram, also known as a phylogenetic tree, represents the evolutionary relationships among different taxa (species, genera, etc.) based on shared derived characteristics or genetic data.

It shows the branching patterns and the order of divergence from a common ancestor. In a cladogram, the branches represent lineages, and the points where branches intersect indicate common ancestors. The length of the branches does not necessarily reflect the amount of time that has passed since divergence.

On the other hand, a fanlike diagram, also known as a radial tree or a phenogram, visually represents relationships among organisms based on overall similarity, without explicitly showing ancestral relationships.

It organizes taxa in a circular or radial pattern, with the more similar organisms placed closer together and the less similar organisms farther apart.

The diagram branches out from a central point, and the length of the branches can be used to represent the degree of dissimilarity or distance between taxa.

In summary, a cladogram focuses on illustrating evolutionary relationships and common ancestry, while a fanlike diagram emphasizes overall similarity among organisms without explicitly showing ancestral connections.

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Answer:

The function of a protein is determined by its shape. The shape of a protein is determined by its amino acid sequence. (Primary, Tertiary, Secondary, Quaternary)

Explanation:

Answer:

c

Explanation:

Answer: yes I agree with c

Explanation:

Option. d. Random mating occurs in the population. Hardy-Weinberg equilibrium is a theoretical concept that describes a population in which the frequencies of alleles and genotypes remain constant from generation to generation.

This equilibrium can only be achieved under certain conditions, one of which is random mating. This means that individuals in the population choose their mates randomly, without any preference for particular traits or characteristics. If mating is not random, then the frequencies of alleles and genotypes will change over time, leading to deviations from Hardy-Weinberg equilibrium. Therefore, random mating is a basic assumption underlying Hardy-Weinberg equilibrium.
The basic assumption underlying Hardy-Weinberg equilibrium is d. Random mating occurs in the population. This principle assumes that mating is random, and individuals do not preferentially choose partners with specific genotypes. This equilibrium also relies on other assumptions, such as no migration, no natural selection, infinite population size, and no mutation. When these conditions are met, allele frequencies in a population will remain constant from one generation to the next, making it an idealized model for studying population genetics.

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Answer:

Very simplistically put - 1 gene codes for a sequence of amino acids, which codes for a protein, and that specific protein is responsible for a “trait”.

Alleles are alternate forms of the same genes. Since chromosomes comes in homologous pairs, there will always be at least 2 versions of any gene (for a particular trait).

Explanation:

Answer: Very True!!!

Explanation:

Answer: Its True.

Have a great day/night!

Answer:

Hi

Explanation:

Ok

The statement "One's genes have a greater impact than exercise habits in determining the proportion of fast-twitch and slow-twitch fibers throughout the body" is true.

Genetics play a major role in determining the proportion of fast-twitch and slow-twitch fibers throughout the body. Slow-twitch fibers are known for their high levels of endurance and their ability to sustain an activity for a longer period. Fast-twitch fibers, on the other hand, contract much faster than slow-twitch fibers and are used for powerful bursts of activity.

The proportion of slow-twitch and fast-twitch fibers in the body varies from person to person and is largely determined by genetics.Genes are responsible for the size, number, and fiber type of muscles throughout the body. Exercise, on the other hand, can affect the size and strength of muscles, but it does not change the proportion of fast-twitch and slow-twitch fibers in the muscles.

However, different types of exercise can stimulate different types of muscle fibers. For example, endurance activities such as long-distance running tend to stimulate slow-twitch fibers, while activities that require quick bursts of power, such as sprinting, tend to stimulate fast-twitch fibers.

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Simple cuboidal epithelia forms the kidney tubules, and the ducts and secretory portions of small glands.

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Answer:

Element A: carbon dioxide

Element B: oxygen

Explanation:

Phenotypes are essentially the physical characteristics that an organism possesses that make it more likely than not that it would thrive in a given environment.

The following assertions are accurate:

1. Survival is a race that all species must win.

3. Some species possess traits that enable them to outcompete rivals in their environment.

5. Natural selection is still in action today.

6. Over the course of multiple generations, phenotypes that are present in a species' most successful individuals grow more common.

The complete question is Check all statements below that are true. All organisms must compete for survival. When organisms struggle to survive, they usually mutate to increase chances of reproduction. Some organisms have phenotypes that make them better competitors than others in their environment. Animals undergo natural selection, but plants and other organisms generally do not. Natural selection continues to occur even today. Phenotypes found in the most successful members of a species become the most prevalent after several generations. A decrease in food availability will increase the variation in a population.

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The difference between elodea leaf placed in 0.9% salt solution versus a 5.0% salt solution can be seen in terms of the effects on the plant's cell turgor pressure.

In general, a higher concentration of salt in the solution will result in a lower water potential and will cause the plant cells to lose water, leading to a decrease in turgor pressure and the leaves appearing wilted.

A 5.0% salt solution would have a stronger osmotic effect compared to a 0.9% salt solution and could potentially lead to more pronounced wilting in the plant. It is important to note that prolonged exposure to high salt concentrations can be detrimental to the plant and may result in death.

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This is an example of natural selection shaping the sea otter population in response to an environmental change caused by an oil spill.

Natural selection is a fundamental concept in evolutionary biology. It refers to the process by which certain traits become more or less common in a population over time, based on their impact on survival and reproduction. In this case, the oil spill along the northern coast of Alaska had a significant impact on the sea otter population.

Initially, the sea otter population consisted of individuals with varying levels of cold water tolerance. Some otters were able to thrive in the colder waters farther north, while others preferred the central coastal area. However, the oil spill caused a large number of otters living in the colder waters to die. This event created a strong selective pressure on the population.

As a result, the surviving otters were primarily those with a higher tolerance for the central coastal area, where the water is relatively warmer. The otters with a lower tolerance for cold water were less likely to survive and pass on their genes to the next generation. Over time, this led to a shift in the overall population's tolerance for cold water, with a higher proportion of otters adapted to the warmer central coastal area.

This example demonstrates how environmental changes can influence the distribution of traits within a population through natural selection. It highlights the role of selective pressures in shaping the characteristics of a species over generations.

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Answer:

first level consumers?- abou 100 units

Second level consumers- about 10 units

Third level of consumers- about 1 unit

Explanation:

Food chain describes the feeding pattern of a group of organisms in an ecosystem. The food chain shows how one organism in one TROPHIC LEVEL feeds on another organism in another. As organisms are being fed on, energy is being transferred.

A food chain always starts with a PRODUCER, which occupies the first and lowest trophic level. It creates the energy transfer as it obtains energy via photosynthetic process. The flow of energy as shown by an energy pyramid is Producer----First level consumer----Second level consumer------Third level consumer.

However, only about 10% of the available energy is transferred and accessible by the next organism. This is because about 90% of the energy has been lost as heat when the organism undergoes metabolic processes. Hence, if 1000 units of energy was present at the producer level, 10/100 × 1000= 100 units will be available to first level consumers.

Also, 10/100 × 100= 10 units of energy will be available to second level consumers and finally 10/100 × 10= 1 unit of energy will be available to talk third level consumer.

Answer:

B. Control halibut fishing

Explanation:

I hope that this helped you ;)

Answer:

B

Explanation:

Bc my test said so

Answer:

A

Explanation:

The frogs with the flatworms live longer than the frogs without