Genetic

provides a mechanism for evolution.

Drift
depression
obstruction
inhibition

The two major cell organelles involved in energy transformation are mitochondria and chloroplasts. Thus option A is correct.

Chloroplasts are the cellular organelle found in photosynthetic organism like plants and algae.

They  are present in mesophyll cells of leaves and contain a high concentration of chlorophyll which absorb sunlight; It is absent in animal cell.

Chloroplast has extra-nuclear DNA and are semiautonomous.

They synthesize food by the process of photosynthesis by absorbing sunlight into chemical energy.

It is major production house of  NADPH and molecular oxygen (O2) by photolysis of water; It produces ATP from photosynthesis.

It also indirectly involve in generation of carbon and sugar molecule during the Calvin Cycle or dark reaction of photosynthesis.

Thus option A is correct.

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Answer:

Explanation:

Natural gas is most commonly extracted by drilling vertically from the Earth's surface. .Hydraulic fracturing, horizontal drilling, and acidizing are processes to expand the amount of gas that a well can access, and thus increase its productivity.

Answer:

Vascular plants, also known as tracheophytes, are plants found on land that have lignified tissues for conducting water and minerals throughout the body of the plant.

1. These lignified tissues are also called vascular tissue and consist of water-conducting xylem tissue and food-conducting phloem tissue.

2. Vascular tissue forms a central column, also called stele, through the plant axis for the transport of different substances.

3. Vascular plants are said to have a true stem, leaves, and roots due to the presence of vascular tissues.

4. The root is a true root that enables the plant to anchor onto the soil and gets nutrients from it.

5. The leaves are broad and have stomata that work for gas exchange and support transpiration.

6. The stem of vascular plants is multilayered with vascular tissue that helps in the protection and conduction of food and water.

7. The arrangement of these issues might be different in a different group of plants as it depends on the pattern of division of cells.

8. The xylem is composed of non-living matter, tracheids, and vesicles, hardened by lignin that provides a stiff structure to the tissue. 9. The phloem, on the other hand, contains living sieve elements that are not lignified.

10. Vascular plants are capable of surviving on land due to their ability to transport food, water, and mineral to different parts of the plant by creating pressure through the tissues.

11. Besides, they also have several modifications that facilitate their survival on land.

12. Another essential characteristic of vascular plants is that the principal generation phase in these plants is the sporophytic phase where they produce diploid spores.

13. Vascular plants are tall and large in size compared to the non-vascular plants because of their ability to transport necessary substances to all parts of the body via vascular tissue.

14. It is believed that vascular plants are a more evolved version of non-vascular plants and thus came later in the evolutionary history.

15. Vascular plants are divided into two groups; non-seed plants or lower vascular plants or cryptograms and seed plants or higher vascular plants or phanerogams.

16. The lower vascular plants include plants like ferns that although are adapted to survive on land still have some characteristics of their aquatic ancestry. These plants belong to the group Pteridophyta.

17. The higher vascular plants are numerous and extremely diverse and are further divided into different subgroups.

18.Some examples of vascular plants include maize, mustard, rose, cycad, ferns, clubmosses, grasses, etc.

Answer:

Definition of nonvascular plant

: a simple, low-growing, nonflowering plant (such as a moss or liverwort) that lacks specialized conducting channels for transporting water and nutrients

vascular plants have lignified tissues for conducting water and minerals throughout the plant.

Explanation:

Advantages of using bananas as a vaccine against diseases: Oral Delivery, Cost-Effective Production.

Reasons why people might be against the use of genetically modified bananas: Safety Concerns, Moral Considerations.

1. Oral Delivery: Bananas can be consumed orally, making them an ideal vehicle for delivering vaccines. This eliminates the need for injections, which can be uncomfortable and require medical professionals to administer.

2. Cost-Effective Production: Bananas are relatively inexpensive to produce and are widely available in many parts of the world.

This makes them a cost-effective option for vaccine production and distribution, particularly in resource-limited settings.

Reasons against the use of genetically modified bananas as vaccines:

1. Safety Concerns: Some individuals may have concerns about the safety of genetically modified organisms (GMOs), including genetically modified bananas.

There may be uncertainties about the long-term effects of consuming GMOs, and fears of potential risks to human health and the environment.

2. Ethical and Moral Considerations: Opposition to genetically modified bananas may stem from ethical and moral concerns regarding the alteration of natural organisms.

Some people may view genetic modification as interfering with nature or raising questions about the boundaries of manipulating living organisms.

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Answer:

Explanation:

To solve this problem, let's represent the heterozygous yellow-seeded plant as "Yy" and the homozygous yellow-seeded plant as "YY."

i. When crossing a heterozygous yellow-seeded plant (Yy) with a homozygous yellow-seeded plant (YY), we can set up a Punnett square to determine the possible offspring genotypes:

    Y     Y

y   Yy  Yy

y   YY  YY

ii. The genotypic ratio is 2:2 or 1:1 for the possible offspring genotypes: Yy and YY.

The phenotypic ratio is also 2:2 or 1:1 for the possible offspring phenotypes: yellow-seeded (YY and Yy).

Question 2:

To determine the probability of specific outcomes, we need additional information about the parental genotypes and their inheritance patterns. Please provide the genotypes of the true breeder from F1 and the non-true breeding yellow-seeded plant for a more accurate calculation.

Answer:

50%

Explanation:

The allele present on each chromosome determines whether or not that chromosome has a knob. Suppose that one member of each of two pairs of homologs in a corn plant has a knob.

This means that on a chromosome with two chromatids, the allele present on one chromatid causes the chromatid to possess knob while the other does not making the plant an heterozygous...

If this plant is crossed with a knobless plant, one whose Chromebook is without knobs, we have

II x II

II - 50% with a knobbed chromatid

II - 50% with only knobless chromosomes.

The first to the left is knobbed, thus the percentage of offspring expected to have only knobless chromosomes would be 50%.

Assuming a diallelic gene and complete dominance, the percentage of the offspring that is expected to have only knobless chromosomes is 50%

----------------------------

Available data:

We will assume complete dominance, and that the presence of knobs is the dominant trait.

We will name the dominant allele A, and the recessive allele a.  

Plant 1 seems to be heter0zyg0us for the trait, while plant 2 is h0m0zyg0us.

Cross: Plant 1 with Plant 2

Parentals)  Aa    x    aa

Gametes)  A   a     a     a

Punnett square)     A      a

                       a     Aa     aa

                       a     Aa     aa

F1) 50% of the progeny is expected to be heter0zyg0us, Aa, expressing knobs

     50% of the progeny is expected to be h0m0zyg0us recessive, aa, having knobless chromosomes.

The percentage of the offspring that is expected to have only knobless chromosomes is 50%.

---------------------------------------

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The main difference between prokaryotic and eukaryotic cells is the abscense of organelles in the prokaryotic cells, which have they genetic material in the cytoplasm unlike eukaryotic cells that have it inside the nucleus. Moreover, eukaryotic cells have other organelles such us the endoplasmic reticulum, vacuoles, lysosomes and mitochondria.

The walls of the stomach are folded into rugae (stomach folds) when it is empty, allowing the stomach to expand when more food is consumed.

Food is digested mechanically and chemically in the stomach. The bolus is stirred by the peristaltic contractions and interacts with the potent digesting juices that the stomach lining secretes. Three layers of smooth muscle, grouped in longitudinal, circular, and oblique rows, line the stomach walls. During mechanical digestion, these muscles enable the stomach to crush and churn the food.

When the stomach is full of food, the rugae in the stomach allow it to expand. The amount of food in the stomach causes it to expand and contract often. The stomach expands as someone eats and becomes full in order to hold the food. The rugae provide the stomach with more surface area so that it can spread out, extend, and grow when eating. As food is broken down and transferred to the small intestine, the stomach's capacity decreases. The rugae resurface as deep folds and wrinkles as it gets smaller, like a balloon getting smaller.

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Answer:

1,Skin that prevents loss of water.

2,Eyelids that allow them to adapt to vision outside of the water.

3,An eardrum developed to separate the external ear from the middle ear.

4,A tail that disappears in adulthood (in frogs and toads).

Explanation:

In order to live on land, amphibians replaced gills with another respiratory organ, the lungs. Other adaptations include: Skin that prevents loss of water. Eyelids that allow them to adapt to vision outside of the water.

hope this answer is correct

they have lungs.they have the red nucleus in the mesencephalon.they have limbs

Answer:

True

Explanation:

Answer:

Pine tree life-cycle Explanation: The pine cone goes from closed to open to spread the seeds inside, making more trees and those trees growing pine cones. continuing thee cycle.

Explanation:  It is in the adult plant

Answer:

Please see below    

Explanation:

The number of chromatids have been stated with the respective event when it occurs in that particular number in the following way:  

23 chromatids

primary oocyte arrested prior to ovulation  

spermatozoa    

46 chromatids

oogonium prior to S phase  

92 chromatids

secondary polar body

The label that would change if this DNA process took place in a prokaryotic cell is the nucleus.

It should be noted that deoxyribonucleic acid, is the hereditary material that is found in humans and all other organisms.

DNA replication is a complex process that involves many enzymes and the complex formed by the enzymes to make an exact copy of the DNA during cell division. DNA replication enzymes are common in both prokaryotes and eukaryotes but the site of DNA replication differs.

The difference between prokaryotic and eukaryotic DNA replication is that the prokaryotic DNA replication takes place through a single origin of replication. In contrast, eukaryotic DNA replication occurs through multiple replication origins.

The nucleus is an organelle that carries the genetic material of the cell. Therefore, DNA replication does not take place in the nucleus but in the cytoplasm.

In conclusion, the label that would change if this DNA process took place in a prokaryotic cell is the nucleus.

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Answer:

Recently created volcanic island

Explanation:

Answer:

The chocolate lover bought 6 boxes of chocolate, each containing 12 truffles

Explanation:

mark me brainly

Answer:

The chocolate lover bought 6 boxes of chocolate, each containing 12 truffles. How many truffles did she buy?

Their movement will require the input of energy. That is option B.

An active transport is defined as the movement of molecules across the cell membrane from different compartments in the living organism.

The active transport makes use of energy because of the need to move molecules from a semi permeable membrane that is against a concentration gradient.

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Scenario 1: 50% chance to have 5 fingers and 50% chance to have 4 fingers. Scenario 2: 75% chance of having a baby with 5 fingers and 25% chance of having a baby with 4 fingers.

In the first case, the offspring has a 50% chance of inheriting the dominant T allele from the 5-fingered father and a 50% chance of inheriting the recessive T allele from the 4-fingered mother. Therefore, the probability of having a child with 5 fingers is 50%. The probability of having a 4-toed child is also 50% since the offspring will only have 4 fingers if they inherit two copies of the recessive allele t.

In the second case, both parents have 5 fingers and are heterozygous (Tt), so there is a 75% chance that the offspring will inherit at least one T dominant allele and have 5 fingers. There is a 25% chance of inheriting two copies of the recessive allele t and having 4 fingers. Therefore, the probability of having a child with 5 fingers is 75% and the probability of having a child with 4 fingers is 25%. 

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Answer:

2 meters per second

Explanation:

Have a good day!!

Answer:

Lipids

Explanation:

Lipids are the best choice for hibernating animals like bears because it is a macromolecule that we know as fat. Fat will break down over a longer period of time when compared to carbohydrates. This long-term breakdown will allow the animal to survive the winter.

(Y²R²C²i²x²k²j²e²s²b²) is an acronym that stands for "land and water are intimately intertwined, constantly shifting boundaries." It highlights the interconnected nature of land and water bodies, emphasizing their dynamic relationship and the continuous changes they undergo.

1. The acronym (Y²R²C²i²x²k²j²e²s²b²) represents the phrase "land and water are intimately intertwined, constantly shifting boundaries."

2. The phrase emphasizes the close relationship between land and water, highlighting how they are interconnected and interdependent.

3. "Intimately intertwined" suggests a strong connection or interweaving between land and water. This can refer to various aspects such as the hydrological cycle, where water flows through different stages and interacts with the land.

4. "Constantly shifting boundaries" implies that the borders between land and water are not fixed but rather subject to change. This could refer to natural phenomena such as erosion, deposition, tides, and sea-level fluctuations.

5. The acronym format (Y²R²C²i²x²k²j²e²s²b²) is used to condense and remember the phrase. Each letter corresponds to the first letter of a word in the original phrase.

6. Acronyms are commonly used in various fields to simplify complex concepts and aid in memory recall.

7. By using this acronym, individuals can easily recall and convey the idea that land and water are interconnected and exhibit dynamic boundaries.

In summary, (Y²R²C²i²x²k²j²e²s²b²) represents the concept that land and water are intimately intertwined and have constantly shifting boundaries, emphasizing their interconnectedness and the continuous changes they undergo.

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The simulation above is about the liquid level measurement. To solve the problem, we need to:

Liquid level measurement is a method to measure the volume of an object using the water level. When an object is added to the container, the liquid level is increased. The difference between the liquid level's after-and-before volume is also the total volume of said object.

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Answer: left to right

Explanation: Diffusion. The side with more molecules sends molecules to the side with less until there is an equal amount of molecules on both sides.

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Answer:

The crane has a sharp and pointed beak adapted for catching and grasping prey. The sharp beak allows the crane to effectively stab and pierce its prey, such as fish, frogs, or small animals. The pointed shape helps the crane to accurately target its prey and secure a firm grip.

On the other hand, the duck has a flat beak, which is better suited for its specific feeding habits. Ducks are primarily filter feeders, and their flat beak enables them to sift through water or mud to collect small organisms, insects, and plants. The flat beak acts like a sieve, allowing the duck to strain out food particles while retaining water.

The difference in beak shape between the crane and the duck reflects their distinct feeding strategies and ecological roles. Each species has evolved its beak shape to optimize its ability to capture and consume the specific types of food sources available in their respective habitats.

tRNA (transfer RNA) is a type of RNA molecule that plays a crucial role in protein synthesis. It carries amino acids to the ribosome, which is the site of protein synthesis, where the amino acids are joined together to form a protein chain.

If poison were to block our cell's ability to make tRNA, it would disrupt protein synthesis and affect the production of essential proteins in the body. This could lead to a range of symptoms, depending on the proteins that are affected.

For example, if the poison blocked the production of tRNA molecules that carry amino acids required for the formation of enzymes involved in digestion, it could lead to problems with digestion and absorption of nutrients. If the poison blocked the production of tRNA molecules that carry amino acids required for the formation of muscle proteins, it could lead to muscle weakness and atrophy.

In severe cases, such as if the poison blocked the production of tRNA molecules that carry amino acids required for the formation of essential proteins involved in the functioning of vital organs such as the heart or lungs, it could be fatal.