Which of the following is not true of energy in a cell?
The cell must have energy to maintain homeostasis.
O Energy can be created by the cell.
O The cell uses mostly chemical energy.
O Energy can be converted by the cell.

Answer:

Explanation: The interest of farmers in growing lettuce landraces is increasing, as landrace varieties prove particularly appealing to consumers striving to purchase natural, local, and high-quality produce. Although high genetic diversity exists in the landrace gene pool, this has scarcely been studied, thus hindering landrace utilization in agriculture. In this study, we analyzed the genetic diversity and the agronomic and quality traits of lettuce landraces in organic agrosystems, by characterizing 16 landraces and 16 modern varieties. We compared 29 morphological descriptors, and several traits relating to agronomic behavior (total and commercial weight, resistance to Bremia lactucae) and quality (color, chlorophyll, dry matter, and total sugars). Trials were conducted in two localities and managed following organic farming practices. Moreover, farmers and consumers participated in the phenotyping of accessions by scoring yield, resistance to B. lactucae, appearance, and taste acceptance. Results show that cultivar group, rather than the genetic origin (modern vs. landrace), is the major source of variation for all agronomic and quality traits. Batavia and Butterhead were highly homogeneous cultivar groups, while Cos accessions showed a much higher intra-varietal diversity. There was also a clear separation between modern and landrace varieties of Oak leaf. Fifteen out of the 16 evaluated landraces presented a high susceptibility to the particular B. lactucae race isolated from the experimental field - a new race not reported before. Breeding programs intended to introgress genetic resistance to this pathogen are a major priority to recover the cultivation of lettuce landraces. Principal component analysis (PCA), conducted on all quantitative data, showed a clear differentiation between modern varieties and landraces, mostly related to their commercial weight and susceptibility to B. lactucae. These seem the most important traits influencing farmer and consumer evaluations. Farmers showed a high capacity for characterizing the samples and agreed with consumers when scoring for the external appearance. It is proposed that farmers and consumers should be included in the phenotyping platforms in future research projects aiming for recovery of landraces.

Answer:

A very fine grained type of massive gypsum is called alabaster which can be used in making ornaments and in carvings. Large quantities of rock gypsum are mined in Barber and Marshall Counties.

It is possible to carve ornaments out of gypsum because it basically consists of fine-grained particles which have a high ability to adhesion and resists one dries. It holds the particles compactly when it completely dries.

Gypsum may be defined as a type of soft sulfate mineral which is significantly composed of calcium sulfate dihydrate. It possesses the chemical formula CaSO4·2H2O. It is widely mined and is utilized as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk, and drywall.

Due to having these specific characteristics, gypsum is widely used to make ornaments through the process of carving. It contains a substance that easily gives structure to any ornament like pots, glass, decorative items, etc.

Therefore, gypsum basically consists of fine-grained particles which have a high ability to adhesion and resists dries.

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The arrangement of abdominal muscles provides them with effective protection and containment of the abdominal viscera.

The abdominal muscles, including the rectus abdominis, external obliques, internal obliques, and transversus abdominis, play a crucial role in protecting and containing the abdominal viscera. Their arrangement and structure contribute to their effectiveness in performing this function.

The abdominal muscles are layered and arranged in such a way that they form a strong and flexible abdominal wall. The rectus abdominis muscles, commonly known as the "six-pack" muscles, run vertically down the front of the abdomen and provide stability and support. The external obliques, internal obliques, and transversus abdominis muscles wrap around the sides of the abdomen in multiple layers, forming a protective sheath. This layered arrangement adds strength and rigidity to the abdominal wall, making it resistant to external forces and impacts.

Additionally, the abdominal muscles are interconnected with connective tissue called fascia. This fascia forms a network of supportive structures that hold the abdominal organs in place and prevent them from shifting or herniating. The fascia acts as a natural barrier, providing further protection and containment of the abdominal viscera.

In conclusion, the arrangement of the abdominal muscles, with their layered structure and interconnected fascia, makes them well-suited for their job of protecting and containing the abdominal viscera. They provide stability, strength, and flexibility to the abdominal wall, ensuring the organs are safeguarded and properly positioned within the abdominal cavity.

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Answer:

The level of structural organisation that includes groups of atoms coming together is the tissue level.

Answer:

the

Explanation:

DNA which is a genetic material is cut at restriction site or Target sequence

Restriction enzymes refers to protein that is produce by bacteria and recognizes a DNA by cleaving to it and cuts the DNA only at that specific site, which is known as restriction site or target sequence.

DNA is the genetic constituent of a living organism.

Therefore, DNA is cut at restriction site or Target sequence

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The cell membrane is considered the outer boundary of the cell and is selectively permeable, allowing diffusion of gases such as oxygen and carbon dioxide, water and micronutrients.

Cell membranes are said to be selectively permeable because only certain molecules can pass through them. Only certain types of molecules, such as water and gas molecules, can pass directly through cell membranes.

Model membrane system:

The properties of lipids in membranes have been demonstrated in detail using a membrane model system. Multilamellar liposomes are one of the most commonly used model membrane systems.

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Answer:

some organisms fit into more than one category

Explanation:

Its Right

The structure responsible for moving things through the cell, as well as the cell itself, is the cytoskeleton. It is a network of protein filaments that provides structural support, maintains cell shape, and enables cell movement and the transport of materials within the cell.

The cytoskeleton is responsible for moving things through the cell, as well as the cell itself. It is a network of protein filaments that provide structural support, shape, and organization to the cell. The cytoskeleton is also involved in a variety of cellular processes, including cell division, movement, and intracellular transport.

There are three main types of cytoskeletal filaments: microfilaments, intermediate filaments, and microtubules, each with specific functions in the cell. Microfilaments, made of the protein actin, are responsible for cell movement and support. Intermediate filaments provide mechanical strength and stability to the cell, while microtubules, made of the protein tubulin, are responsible for intracellular transport and cell division.

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Answer:the penis which is the erctile tissue

The testes a part which has dual function

The epididimus which store the sperm

The prostate gland and others

Answer:

Penis

Epidermis

Fore skin

Explanation:

Following the Hardy-Weinberg equilibrium theory, the frequency of the heter0zyg0us genotype is 2pq. In the exposed example, 2pq = 0.48.

The Hardy-Weinberg equilibrium theory states that the allelic frequencies in a locus are represented as p and q.

Assuming a diallelic gene,

→  The allelic frequencies are

→  The genotypic frequencies after one generation are

If a population is in H-W equilibrium, it gets the same allelic and genotypic frequencies generation after generation.

The addition of the allelic frequencies equals 1  ⇒ p + q = 1.

The sum of genotypic frequencies equals 1 ⇒ p² + 2pq + q² = 1

If the allele A has a frequency of 0.6, and the allele B has a frequency of 0.4, then the frequency of the heter0zyg0us genotype is

2pq = 2 x 0.6 x 0.4 = 0.48

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Answer:

body plan. a set of morphological and developmental traits. Animal Overview. -mulitcellular eukaryotes. -heterotrophs that ingest their food.

Explanation:

A body plan, Bauplan, or ground plan is a set of morphological features common to many members of a phylum of animals. The vertebrate body plan is one of many: invertebrates consist of many phyla.

HOPE IT HELPS : D

Answer:

A saturated fat is a type of fat in which the fatty acid chains have all or predominantly single bonds. A fat is made of two kinds of smaller molecules: glycerol and fatty acids. Fats are made of long chains of carbon atoms. Some carbon atoms are linked by single bonds and others are linked by double bonds. Double bonds can react with hydrogen to form single bonds. They are called saturated because the second bond is broken and each half of the bond is attached to a hydrogen atom.

Explanation:

Answer:

saturated fats consists of single covalent bond and they are solid at room temperature and their melting point increases with increasing chain length

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Explanation:

The first life on Earth was prokaryotic. There're different theories about the origin of these kinds of cells, among them we can find how it's hypothesized that these basic forms of life came up from other planets in meteorites, what it's known as the panspermia theory of life. On the other, there's said that the primitive conditions after the formation of our planet gave place to cyclic inorganic molecules that replicate themselves in a physicochemical equilibrium, as happens today with the nutrients cycle, for example, and in a primordial soup, these replicated molecules began to conform more complex structures like nucleic acids that lead to the formation of live organisms. Maybe they resulted after those basic molecules were progressively being part of other molecules, and involved other molecules in their basal structures, such as states the endosymbiotic theory. Or maybe the origin of those basic forms of life is the result of these and other theories in conjunction .

Answer: The chemical reaction between oxygen and glucose that releases energy in cells is called cellular respiration. This process occurs in the mitochondria of cells and involves several steps, including glycolysis, the citric acid cycle, and the electron transport chain.

Glycolysis is the first step of cellular respiration, during which a molecule of glucose is broken down into two molecules of pyruvate, releasing a small amount of energy in the form of ATP (adenosine triphosphate). The citric acid cycle, also known as the Krebs cycle, is the second step of cellular respiration, during which pyruvate is further broken down and more ATP is produced.

The final step of cellular respiration is the electron transport chain, which occurs in the inner membrane of the mitochondria. During this step, electrons are transferred from molecules of NADH and FADH2 to oxygen, releasing a large amount of energy in the form of ATP. The oxygen used in this process is the oxygen we breathe in, and the glucose comes from the food we eat.

Overall, cellular respiration is a series of chemical reactions that converts glucose and oxygen into energy, releasing carbon dioxide and water as byproducts.

Explanation:

"ATP (adenosine triphosphate) is a molecule that is the energy currency of the cell, providing energy for processes such as muscle contraction, nerve impulse propagation, and chemical synthesis.

What is contraction?

Contraction is a process in which a muscle or other organ decreases in size and strength. It occurs when the muscle fibers shorten and the connective tissue surrounding them tightens, resulting in a decrease in the volume of the muscle. This process is necessary for movement and for regulating the body’s organs. Contraction is an essential part of the skeletal muscle system, the cardiovascular system, and the respiratory system. In the skeletal muscle system, contraction is necessary for moving bones and joints, and for generating force. In the cardiovascular system, contraction is necessary for maintaining blood pressure and for regulating heart rate.

Therefore, ATP (adenosine triphosphate) is a molecule that is the energy currency of the cell, providing energy for processes such as muscle contraction, nerve impulse propagation, and chemical synthesis.

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Nonspecific primer annealing is one of the possible reasons why PCR results in numerous bands. Try raising the annealing temperature, raising the MgCl2 concentration the primer concentration to fix the problem.

It is most likely due to nonspecific binding or the development of a primer-dimer that you are seeing unexpected or numerous bands in your PCR findings.

By raising the annealing temperature (thereby increasing specificity), or by lowering the primer concentration, primer dimer formation is often reduced. But occasionally these techniques will also lessen the sensitivity of the PCR reaction.

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Chloroplasts and mitochondria most likely arose from endosymbiosis. This is because they have their own DNA and replicate independently, just like free-living prokaryotes.

What is endosymbiosis?

Endosymbiosis refers to the symbiotic relationship between two different species where one species lives inside the other. According to the theory of endosymbiosis, eukaryotic cells evolved from prokaryotic cells through a process where smaller prokaryotic cells were engulfed by larger prokaryotic cells. The prokaryotic cells that were engulfed became organelles in the eukaryotic cells. Chloroplasts and mitochondria are the two most important organelles in eukaryotic cells that most likely arose from endosymbiosis. Chloroplasts and mitochondria have their own DNA, which is quite similar to bacterial DNA. They also replicate independently, just like free-living prokaryotes. This is strong evidence that supports the endosymbiosis theory.

Therefore, the correct option is C. chloroplasts and mitochondria.

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The name of the sections of the large intestine starting from the cecum are colon, rectum and the a-nal canal.

The large intestine is basically a long, tube-like organ which is connected to the small intestine at one of its end and is connected to the anus at its other end. The large intestine basically has four parts which include the cecum, colon, rectum, as well as the a-nal canal.

The food which is partially digested moves first through the cecum and then enters into the colon, where water as well as some nutrients and even the electrolytes are removed. The material which remains is the solid waste called the stool. It then moves through the colon and gets stored in the rectum, and is excreted out from the body through the a-nal canal and anus.

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The correct option is D. It would tip the economic balance to make clean energy more profitable.

Project funding through the use of tax advantages and cash flow created by the project is provided by tax equity. Tax credits and deductions are included in these advantages. Equity taxes for solar energy plants would come from perks such.

Production tax credits and investment tax credits differ significantly in that one continues to pay out depending on the quantity of a product generated, such as wind energy, while the other needs real money to be invested in order to benefit from the credit.

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Answer:

10. BB and EE

11. Aa, Dd and Gg

12. cc and ff

13. Aa, BB, Dd and Gg

14. cc and ff

Explanation:

The capital letters are the Dominant genes and the lower case letters are the recessive genes.

Homo in homozygous means same and hetero in heterozygous.

This means that the homozygous dominant means 2 of the same dominant genes and same for recessive as well.

In the heterozygous it means to select the ones that have both dominant and recessive genes

The phenotypes is the appearance of what your talking about plants for example if it has Dd or DD genes it has a dominant trait appearance but can still pass on recessive genes if it was Dd. The recessive phenotypes will only appear recessive if it has 2 recessive genes such as dd.

The net force that would have to act on someone with mass of 50 kg to cause this acceleration is 4900 Newtons. The weight of such a person is 110.1 pounds (approximately).

Given that the human body can safely withstand an acceleration of 10 g. We have to determine the net force that would have to act on someone with mass of 50 kg to cause this acceleration and find the weight of such a person in pounds, then convert the answer to (a) in pounds.The formula for acceleration is:

a = F / ma = 10 * 9.8 = 98 m/s²

where F = net force acting on the body, m = mass of the body

Substituting the values given in the formula we get;

98 = F / 50F = 4900 Newtons

Thus, the net force that would have to act on someone with mass of 50 kg to cause this acceleration is 4900 Newtons.

Weight = Mass × acceleration due to gravity,

i.e w = mg

where w = weight, m = mass, g = acceleration due to gravity = 9.8 m/s²

Substituting the values given we get;w = 50 × 9.8w = 490 N

Thus, the weight of such a person is 490 N.

Now, to convert Newtons to pounds, we can use the following conversion factor:1 Newton = 0.2248 pounds

Therefore, 490 N = 490 × 0.2248 pounds = 110.1 pounds (approximately)

Thus, the answer for part (a) is 4900 Newtons and the answer for part (b) is 110.1 pounds (approximately).

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The high concentration of salts in the fish's urine indicates that the fish is likely living in a saltwater environment. Saltwater fish excrete excess salt through their urine to maintain a proper balance of salt and water in their bodies.

Based on this information, it can be predicted that the fish's habitat is a saltwater environment, such as an ocean or a saltwater lake. These environments have high levels of salt, which is essential for the survival of saltwater fish. The high concentration of salts in the fish's urine is a natural adaptation that allows them to thrive in these environments.

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answer:

b.

asking questions shows that you are working hard in class.

explanation:

because asking questions shows that you would like more info on the concept thus you are paying attention and would like to understand better so that you can learn whatever it it that the class is supposed to be teaching you.

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The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.

A mutation is a sudden and lasting alteration in the DNA sequence that can influence genetic variation. Changes in the DNA sequence can influence phenotype, which may or may not have an effect on an organism's fitness. Mutations occur spontaneously, either from errors in DNA replication or from exposure to mutagenic agents. Mutations may happen in either coding or non-coding regions of the DNA, and they can be either silent or expressed.

Evolution is a natural process that results in the gradual change of inherited characteristics in populations over generations. It is the process of alteration in the inherited characteristics of species over successive generations. In other words, it is the process of gradual changes that happen to species over time as they adapt to their environments. It can be defined as a change in the gene frequency in a population over time.

Types of Evolution 1. Natural Selection 2. Genetic Drift 3. Gene Flow 4. Mutation 5. Non-Random Mating 6. Admixture 7. Mutation Pressure 8. Genetic Draft 9. Bottleneck and Founder Effect 10. Sexual Selection the process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.

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Answer:

photosynthesis

Explanation: