9. What are the major findings of Theodor Boveri's studies on sea urchin's inheritance?

Francis Crick put forth the adaptor hypothesis, and tRNA was later found to be the adaptor. The correct answer is option(c).

Francis Crick OM FRS was an English microscopic wildlife expert, biophysicist, and neuroscientist. He, James Watson, Rosalind Franklin, and Maurice Wilkins acted important functions in understanding the curling form of the DNA particle.

Transfer RNA (shortened tRNA) is a narrow RNA fragment that plays a key duty in protein combination. Transfer RNA serves as a link (or adaptor) 'tween the emissary RNA (mRNA) particle and the increasing chain of amino acids that compensate for a protein.

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Answer:

CAG- GTG- GAC- TGA- GGA- CTT- CTC

Dna complementary strand would be

GTC- CAC- CTG- ACT- CCT- GAA- GAG

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Answer:The rate of photosynthesis is the dependent and concentration of carbon dioxide is the independent

Explanation:The rate of photosynthesis depends on how much carbon dioxide is being supplied which makes it the dependent variable

The polarity-based collision with aqueous blood causes glucose, which is primarily composed of hydrogen and oxygen as well as carbon, to dissolve in the blood.

Glucose is defined as a straightforward sugar having the chemical formula C6H12O6. The most prevalent monosaccharide, a type of carbohydrate, is glucose. The bloodstream carries glucose to the cells.

Lipids are mostly composed of carbon and hydrogen, which prevents the same attraction from occurring and renders them intractable. It can be packaged and transparent with lipoproteins thanks to its simplified architecture.

Thus, the polarity-based collision with aqueous blood causes glucose, which is primarily composed of hydrogen and oxygen as well as carbon, to dissolve in the blood.

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(a) The probability of a randomly chosen person having hemophilia is 0.000105.

(b) The probability that a given person with hemophilia is male is approximately 1.9.

(a) Probability that a randomly chosen person has hemophilia:

Haemophilia can affect both males and females, but we need to find the probability for both. Hence,

the probability of having hemophilia = probability that a randomly chosen person is male × probability that a male has hemophilia + probability that a randomly chosen person is female × probability that a female has hemophilia

Probability of having hemophilia in males = 2/10,000 = 0.0002

Probability of having hemophilia in females = 1/100,000 = 0.00001

Probability of a randomly chosen person is male = 0.5

Probability of a randomly chosen person is female = 0.5

Probability of having hemophilia = 0.5 × 0.0002 + 0.5 × 0.00001 = 0.000105

(b) Probability that a given person with haemophilia is a man:

From (a), we know that the probability of having hemophilia is 0.000105. Therefore, the probability that a given person with hemophilia is male is:

probability that a given person with haemophilia is a man = probability that a male has hemophilia/ probability of having hemophilia = 0.0002/0.000105 = 1.9048≈1.9 (approximately).

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Answer: True

Explanation: Mitochondria are large enough to be seen in the light microscope, and they were first identified during the nineteenth century. Real progress in understanding their function, however, depended on procedures developed in 1948 for isolating intact mitochondria. For technical reasons, many of these biochemical studies have been performed with mitochondria purified from liver; each liver cell contains 1000–2000 mitochondria, which in total occupy about one-fifth of the cell volume.

Controlled burning is an ordinary practice used to acchieve different goals. Controlled burning is a fire-management methods that reduces outbreaks of pests and diseases. Option D is correct.

When talking about controlled burning, we are referring to the use of fire in an ecosystem by an expert team. Controlled fires must be done under specific meteorological conditions. These include temperature range and humidity, among others, to avoid fire expansion.

The expert team must control the fire dimensions and guide it to an end point, which might be a water flow, rocks, a road, among others.  

Some ecosystems depend on natural fires to remain stable. When the practice of controlled fire is well-done, it helps to restore these ecosystems' health and to avoid future damages. Controlled fire practice has several land management goals.

Among these goals, one of the followed goals is to control the outbreaks of pests and diseases.

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Full Question ;

which of the following fire-management methods reduces outbreaks of pests and diseases?

A. preventing fires

B. suppressing a fire altogether

C. suppressing a fire at early stages

D. controlled burning

Answer:

According to the diagram, the digestive organs on the pink targets includes:

a.) Liver, c) esophagus, d) gall bladder, e)Stomach, I) Small intestine j) Pancreas

The source of each digestive enzyme or fluid on the blue targets includes: b) bile, f) pepsin, g) Intestinal enzymes, h) Pancreatic juice.

Explanation:

The digestive system is the collective name used to describe the alimentary canal, accessory organs and a variety of digestive processes that takes place at different level in the canal to prepare food eaten for absorption.

Accessory organs of digestion generate various secretions which are poured into the tract to aid in the digestion of the food taken. They include: salivary gland, pancreas (secrets pancreatic juice), liver ( secrets bile), gall bladder ( stores bile).

The analogy that best describes the induced-fit model of enzyme-substrate binding is a hug between two people.

The induced-fit model is a model that proposes that the enzyme and the substrate undergo conformational changes upon binding to each other.

Initially, the active site of the enzyme has a shape that is similar but not perfectly complementary to the substrate. When the substrate approaches and interacts with the active site, the enzyme undergoes structural rearrangements to better accommodate the substrate.

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Applying low-emittance coatings will decrease the U-factor, which means that it will reduce the amount of heat scapes through the windows  improve the energy efficiency of the building. Option B is Correct.

This can lead to lower energy demand and cost savings for the building owner. Additionally, improving energy efficiency can also support biophilic building design by creating a more comfortable and sustainable indoor environment. Lastly, low-emittance coatings can also improve the longevity of the window by reducing the amount of thermal stress on the glass.

Any construction must have a building envelope because it creates a barrier that protects both the interior and exterior of the structure.

The structure's walls, roof, windows, doors, and foundation are all parts of the building envelope, together with insulation and other elements. The main goal of the building envelope is to act as a weatherproof barrier and insulate the interior of the structure from the outside environment. Because it limits the quantity of outside air penetration, the building exterior also contributes to the maintenance of indoor air quality. The building envelope also improves the effectiveness of the building's heating and cooling systems, cutting down on both energy use and expenditures.

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Answer:

The term that describes the relationship in which one organism lives inside the other one is endosymbiosis.

Explanation:

Answer:

plant cells have a rigid cell wall that helps it keep shape and animal cells don't

Answer:

Plant cells contain a cell wall to help give better structure and protection than animal cells. Plant cells also contain a large central vacuole that is used to store waste and water. Another thing is that plant cells have an organelle that preforms photosynthesis.

Answer:

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Explanation:

When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat. The embryo's cells start to enlarge. Then the seed coat breaks open and a root or radicle emerges first, followed by the shoot or plumule that contains the leaves and stem.

Answer:

C.

Explanation:

Got it right on the test.

The statement that best describes how wedge basins form is : ( C )

Wedge Basin also known as accretionary prism is formed from the accretion of sediments into the non-subducting plates that is present at convergent plate boundary. Generally all types of basins are formed by erosions occurring above ground or earthquakes occurring underground which causes a depression on the earth surface.

In summary we can conclude that Wedge basins form as described in the answer above.  

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Eardrum vibrations are transmitted by three tiny bones located in the middle ear. These bones are the malleus, incus, and stapes, and they are also known as the ossicles

The malleus, which is attached to the eardrum, receives the vibrations and transfers them to the incus. The incus then passes the vibrations on to the stapes, which connects to the oval window of the inner ear. The oval window is a flexible membrane that separates the middle ear from the inner ear, which contains the cochlea, the organ responsible for detecting sound. When the stapes vibrates against the oval window, it creates pressure waves in the fluid-filled cochlea, stimulating the hair cells inside. These hair cells are responsible for converting the pressure waves into electrical signals that are transmitted to the brain, where they are interpreted as sound. The middle ear and the ossicles play a crucial role in amplifying and transmitting sound vibrations, allowing us to hear a wide range of sounds.

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A substance secreted by the vascular endothelial cells that can help to initiate fibrinolysis is the Tissue plasminogen activator.

Tissue plasminogen activator (tPA), also called alteplase which is a medication made of a protein that can dissolve blood clots. Human tPA is a glycoprotein produced mainly by vascular endothelial cells. It is a thrombolytic agent that will break down blood clots to restore blood flow to the ischemic region of the human brain, and it is the only FDA-approved medication available to treat ischemic stroke.

Fibrinolysis is a normal human body process. It prevents human blood clots, which occur naturally, from the growing and causing problems. A Primary fibrinolysis refers to the normal breakdown of clots.

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water flows into the plasma membrane ---> Water and the Plasma Membrane

water flows through the plasma membrane by means of osmosis and helps with homeostasis

osmosis is the movement of water molecules from regions of low solute concentration to regions of high solute concentration through a semi-permeable membrane.

homeostasis is the process by which the body maintains a fairly constant internal environment.

The plasma membrane is the lipid bilayer membrane which encloses the contents of the cell separating it from the external environment.

The plasma membrane is a selectively permeable membrane that allows some solutes to enter or leave the cell while preventing other from doing so.

The plasma membrane allows some small molecules such as ions as water molecules to enter or leave the cell as a result of their concentration gradient.

Considering the relationship between water and the plasma membrane:

water flows into the plasma membrane ---> Water and the Plasma Membrane

water flows through the plasma membrane by means of osmosis and helps with homeostasis

osmosis is the movement of water molecules from regions of low solute concentration to regions of high solute concentration through a semi-permeable membrane.

homeostasis is the process by which the body maintains a fairly constant internal environment.

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The mechanisms that can result in genetic change in bacteria include all of the above.O mutations in the DNAO horizontal gene transferO exposure to mutagenicO chemicalsMutations in DNA, horizontal gene transfer, exposure to mutagenic agents, and chemicals can all lead to genetic changes in bacteria.

\What are mutations in DNA?Mutations in DNA occur when the DNA sequence is modified. Mutations can occur spontaneously as a result of replication errors or exposure to mutagenic agents. Bacteria can create new proteins or modify existing ones as a result of these changes.What is horizontal gene transfer?Bacteria may transfer DNA from one bacterium to another via horizontal gene transfer. Bacteria can pass on genes through conjugation, transduction, and transformation.

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Answer:

BRO THE CORRECT ANSWER IS .... C) DECOMPOSTER

Explanation:

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Answer:

These characteristics of Life are very important.

Explanation:

Organization growth, development requires energy, reproduction respond to stimuli and maintains homeostasis​ are the characteristics of Life. These characteristics are very important for survival and for a good life. In the absence of these characteristics, the organisms will die. Energy is required for  the growth and development of an organisms. Equilibrium is maintained in the body of organism by maintaining homeostasis in the body which resist change in the body.

Answer:

D is the correct answer

Answer:

its D

Explanation:

Without the presence of enzymes, the reactions necessary for life would require higher temperatures in order to occur.

Proteins make up enzymes, which are the fundamental components of all living things. They accelerate biochemical reactions as a result of their function as catalysts. Those reactions simply would not take place or would proceed too slowly to support life. For instance, digestion would be impossible without enzymes.

Because higher temperatures are able to increase the rate of reaction in a reaction, stimulating the activation energy required for the reaction, higher temperatures are able to complete the reactions necessary to sustain life without the presence of enzymes.

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Without the presence of enzymes, the reactions necessary for life would require much higher temperatures and/or pressures in order to occur.

Enzymes have the ability to accelerate chemical reactions without being eaten, which is how they function as catalysts. They achieve this by reducing the activation energy necessary for a reaction to start, enabling it to proceed considerably more quickly and at lower temperatures and pressures. At the temperatures and pressures experienced in live organisms, reactions would occur much more slowly—or not at all—without the presence of enzymes.Proteins provide the primary function of enzymes, which are catalysts that quicken practically all chemical events within cells.

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Answer:

starch molecule is too big to fit in the cell, and when starch breaks it turns into glucose, which your body can burn it for energy.

Explanation:

lipids----(lipase pancreatic/gastric/intestinal)----->Fatty acids+Glycerol

The food material is the one on the left and the end products the one on the right.

The transcription product of the DNA sequence 5ʹ-TGCCA-3ʹ is: 5ʹ-ACGGU-3ʹ (Option C).

During transcription, RNA polymerase synthesizes an RNA molecule that is complementary to the DNA template strand. In RNA, thymine (T) is replaced by uracil (U). Therefore, the RNA sequence that is transcribed from the DNA sequence 5ʹ-TGCCA-3ʹ is:5ʹ-ACGGU-3ʹ.

Deoxyribonucleic acid, also known as DNA, is a large, double-stranded, helical molecule that is found in nearly all living things. Adenine (A), cytosine (C), guanine (G), and thymine are the four different types of nucleotide monomers that make up this compound. (T). The nitrogenous bases protrude from the backbone, which is made up of sugar (deoxyribose) and phosphate groups, and is connected to the other nucleotides via phosphodiester bonds. The genetic code, which contains the instructions for all living things to develop, grow, reproduce, and function, is determined by the arrangement of these nitrogenous bases along the DNA molecule.

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A phylogenetic tree represents the evolutionary history of a group of organisms. It is used to depict the evolutionary relationships between organisms, including the time of divergence, common ancestors, and evolutionary innovations or adaptations.

A phylogeny is composed of branches and nodes, where the branches represent the lineages of organisms and the nodes represent the points of divergence or speciation. Here are the following statements that are accurate with regard to a phylogeny,

as represented by a phylogenetic tree:

Members of the same clade likely share many derived characters. This statement is true because a clade refers to a group of organisms that share a common ancestor, and all of its descendants. Therefore, members of the same clade are likely to share many derived characters because they are closely related and have evolved from a common ancestor. Shared ancestral characters are excellent traits to use in developing a phylogeny.

This statement is false because the ancestral group may not have all the derived characters of the descendant species. Derived characters are traits that have evolved in a lineage after it has diverged from its common ancestor, so they are unique to a particular group of organisms. Therefore, the ancestral group may have some of the derived characters of the descendant species, but not all of them.

In conclusion, the accurate statements regarding a phylogenetic tree include that members of the same clade likely share many derived characters and shared ancestral characters are excellent traits to use in developing a phylogeny.

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The book value of the equipment at the beginning of the third year would be approximately $262,000.

To calculate the book value of the equipment at the beginning of the third year using the straight-line method of depreciation, we need to determine the annual depreciation expense and subtract it from the initial cost.

The annual depreciation expense can be calculated using the formula:

Annual Depreciation Expense = (Initial Cost - Salvage Value)/Useful Life

In this case;

Initial Cost = $390,000

Salvage Value = $70,000

Useful Life = 5 years

Annual Depreciation Expense = (390,000 - 70,000) / 5

Annual Depreciation Expense = $64,000

To find the book value at the beginning of the third year, we need to subtract the accumulated depreciation up to that point from the initial cost;

Accumulated Depreciation = Annual Depreciation Expense × Number of Years

Accumulated Depreciation = $64,000 × 2 (since it is the beginning of the third year)

Accumulated Depreciation = $128,000

Book Value at the Beginning of the Third Year = Initial Cost - Accumulated Depreciation

Book Value at the Beginning of the Third Year = $390,000 - $128,000

Book Value at the Beginning of the Third Year = $262,000

Therefore, the Book Value at the Beginning of the third Year is $262,000.

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