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Answer:

Crossing over is the exchange of genetic material between non-sister chromatids of homologous chromosomes during meiosis, which results in new allelic combinations in the daughter cells.

When chromosomal homologs communicate with one another during Meiosis I's metaphase, crossing over takes place.

When chromosomes of the same type are paired together during meiosis, a biological event called crossing over takes place.

Parts of the chromosome can be exchanged when two chromosomes, one from the mother and one from the father, line up. The same genes may be present on the two chromosomes in different versions.

The exchange of genetic material between non-sister chromatids of homologous chromosomes occurs during crossing over, an enzyme-mediated process. It happens during meiotic prophase I's pachytene stage.

Crossing over occurs during Meiosis I's metaphase when chromosomal homologs interact with one another.

Thus, this way, crossing over takes place during meiosis.

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Cell Membrane: Semi-permeable layer which controls what enters and exits the cell.

Cell Wall: (are not present in animal cells) Is for structural support for the cell

Nucleus: Controls activities and regulates the cell, known as the control center of a cell

Nuclear Membrane/Nuclear Envelope: Double membrane layer that is mainly for separation of the contents present in the nucleus from the outside.

Ribosome: Forms protein from amino acids sent through the cell

ER: Protein synthesis and protein transport

Mitochondria: Powerhouses of cells, responsible for cellular respiration and producing energy in the form of ATP

Chloroplasts (not present in animal cells): Mainly for the process of photosynthesis

Golgi Apparatus: Lysosome support, transports proteins and lipids through vesicles

Vacuole : Balances pH (stores water for structural support as well)

Lysosomes: Breaks down waste, helps the cell's metabolism

This took a while, sorry for the wait, I really hope this helps!

Answer:bro this is beyond lazy

Explanation:

Answer:fungi is a eukaryotic

Bacteria is a prokaryotes

Protist is a Eukaryotic

Animal is a Eukaryotic

Plant is a Eukaryotic

Explanation:

Answer:

Based on the given information , the cellular structure , which don not function properly in Tay Sachs disease  is Lysosomes

Explanation:

LYSOSOMES -: In many animal cells, a lysosome is a membrane-bound organelle. These are spherical vesicles containing hydrolytic enzymes that can break down many types of biomolecules.  A lysosome, with both its membrane proteins and its lumenal proteins, has a particular composition. There are a number of enzymes in lysosomes, helping the cell to break down different biomolecules that it swallows, including peptides, nucleic acids, carbohydrates , and lipids (lysosomal lipase). For optimal function, the enzymes responsible for this hydrolysis need an acidic environment.

TAY SACHS DISEASE -:  The autosomal recessive disorder Tay-Sachs is caused by mutations in both gene alleles (HEXA) on chromosome 15. HEXA codes for the enzyme β-hexosaminidase A alpha subunit. This enzyme is contained in organelles, lysosomes, which break down large molecules for the cell to recycle.  

Normally, β-hexosaminidase A helps to degrade a lipid called ganglioside GM2, but the enzyme is absent or present only in very small amounts in Tay-Sachs individuals, enabling excessive accumulation of ganglioside GM2 in neurons. In the different types of Tay-Sachs, the progressive neurodegeneration seen depends on the speed and degree of accumulation of GM2 ganglioside, which in turn depends on the amount of functional β-hexosaminidase A present in the body.

Hence , the answer is lysosomes .

Answer:

Explanation:

There are four main types of species interactions that occur between organisms in an ecosystem: Predation, parasitism and herbivory - In these interactions, one organism benefits while the other is negatively affected. * Competition - Both organisms are negatively affected in some way due to their interactions.

Answer:

What is the question? What do you need help with?

Explanation:

Answer:

The answer is; extremophiles

These organisms are found in places on earth that would be damaging to most life on earth. There are different categories of extremophiles depending on their environment. For example, those that live in the extreme cold (even below  150C ) are called Psychrophiles while Xerophiles live extreme desiccation.

Answer:

1.) It is controversial because in order to take embryonic stem cells, the embryo must die. This is killing a baby.

2.) Stem cells can be taken from your own body from your blood stem cells. This kind of transplant would be considered an autologous stem cell transplant and could help heal diseased or damaged bone tissue.

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Answer:

D. Thr availability of safe places to rest

Explanation:

Thats like saying people could die because they don't have a place to sleep

B. The biodiversity of the population is not a limiting factor for coyotes.

Coyotes are medium-sized mammals belonging to the Canidae family, which also includes wolves, foxes, and dogs. They are native to North America and can be found in a variety of habitats, including deserts, forests, and grasslands.

Coyotes are highly adaptable and opportunistic, making use of a wide range of food sources, from small mammals such as rabbits and rodents, to fruits, insects, and even carrion. They are known for their distinctive howl, which they use to communicate with each other over long distances. Despite their reputation as pests, coyotes play an important role in maintaining the balance of ecosystems, and they are considered a valuable species in many regions.

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Answer:

triple beam balance

Explanation:

Hope this helped <3

Answer:

google

Explanation:

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There are two types of electric charges: positive and negative (commonly carried by protons and electrons respectively). Like charges repel each other and unlike charges attract each other.

Answer known as electric charge, electrical charge, or electrostatic charge and symbolized q, is a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons

Explanation:

known as electric charge, electrical charge, or electrostatic charge and symbolized q, is a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons

Answer:

Cell membrane

Explanation:

Cell membrane is the cellular structure in an animal cell helps maintain homeostasis by controlling the transportation of substances into and out of the cell

Homeostasis is a self regulating process that maintain a stability of internal body with respect to the changing external environment which ultimately maintain a steady state of the living system.

It maintain body homeostasis by regulating body temperature, blood pH, blood glucose level,  sodium, potassium and calcium ion concentrations.

Three mechanisms are involved in homeostasis such as Effector, Receptor, Control Center.

The  homeostasis  can be failed due to two factors such as due to an internal environment or other factors like Genetics, Physical condition, diet, nutrition, toxins, Psychological health etc.

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Answer:

The phases of the moon are?

Explanation:

'' New

Waxing Crescent

First Quarter

Waxing Gibbous

Full

Waning Gibbous

Third Quarter

Waning Crescent''

Answer:

It should be letter D hope it helps

Answer:

The answer is D because it is a mixture of both freshwater and salt water!!

Answer:

A planet that has not cleared the clutter from its neighborhood  but meets all other criteria for a planet  is called/classified as a dwarf planet.

Explanation:

Answer:

Because of Nitrogen

Explanation:

Answer:

homeostasis is the answer

Answer:

ATP

Explanation:

glucose splits into two pyruvic acid molecules, which in turn, release ATP (Adenosine triphosphate).

Answer:

Explanation:  

Once the sun's energy reaches earth, it is intercepted first by the atmosphere. A small part of the sun's energy is directly absorbed, particularly by certain gases such as ozone and water vapor. Some of the sun's energy is reflected back to space by clouds and the earth's surface.

Answer:

When an earthquake occurs the seismic waves (P and S waves) spread out in all directions through the Earth's interior. Seismic stations located at increasing distances from the earthquake epicenter will record seismic waves that have traveled through increasing depths in the Earth.

Seismic velocities depend on the material properties such as composition, mineral phase and packing structure, temperature, and pressure of the media through which seismic waves pass. Seismic waves travel more quickly through denser materials and therefore generally travel more quickly with depth. Anomalously hot areas slow down seismic waves. Seismic waves move more slowly through a liquid than a solid. Molten areas within the Earth slow down P waves and stop S waves because their shearing motion cannot be transmitted through a liquid. Partially molten areas may slow down the P waves and attenuate or weaken S waves.

When seismic waves pass between geologic layers with contrasting seismic velocities (when any wave passes through media with distinctly differing velocities) reflections, refraction (bending), and the production of new wave phases (e.g., an S wave produced from a P wave) often result. Sudden jumps in seismic velocities across a boundary are known as seismic discontinuities.

Within the Earth, molten areas slow down P-waves and stop S-waves because shearing motion of the waves cannot be transmitted through a liquid.

Earthquake cause the seismic waves (P and S waves) that spread out in all directions even in the Earth's interior. Seismic waves move more slowly through a liquid than a solid.

Within the Earth, molten areas slow down P-waves and stop S-waves because shearing motion of the waves cannot be transmitted through a liquid.

Therefore, most of the S-waves of an earthquake disappear about a distance of 11,500 km from the epicenter.

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Answer:

B

Explanation:

plant cell has cell wall nah

Answer:

The statement that best describes the benefit of studying biology is the ability to intelligently debate issues such as cloning.

Explanation:

Biology encompasses the study of all known forms of life, including their anatomy, organization, functioning and interactions.

One of the advantages of the knowledge acquired through biology is to be able to participate in works and discussions involving subjects related to living beings, including cloning.

The other options are not correct because:

    a and c. The ability to experiment on animals or preserve animals that are extinct is reserved for scientists with a deep knowledge of biology and its fields.

    d. Understanding the causes of wheather change does not correspond to knowledge in biology

Answer:

large hypertonic vacuole

cell plate in cell division

Explanation:

Answer:

No

Explanation:

Based on the exact methodology that Raul is using he will never produce valid results. This is mainly due to the fact that there are too many changing variables in his experiment. In order to produce valid results, the experiment can only have one changing variable (independent variable) at a time, while all of the other variables need to be controlled/constant. This would allow Raul to isolate which change is actually causing the desired effect in the plants. The way that Raul has his experiment set-up he will not be able to pinpoint exactly what variable or aspect is actually causing the growth of the plants.

Answer:

Sporophyte

Explanation:

Answer:

nice Sporophyte plant :>

Explanation:

Answer:

1) Farming

2) Space to Build Shelter

3) Soil (farming)

4) Water

Let me know if this helps

:)

Answer:

Cropland, Range, Pasture, and Forestry. ;)

Explanation:

Answer:

B, or Canceled out.

Explanation:

In a negative feedback loop, the product of the loop inhibits whatever initiated the loop, preventing more product from being formed. This is in contrast to a positive feedback loop, where the product of the loop further stimulates whatever initiated the loop, resulting in even more product being formed. :)

Answer:

Explanation:

In a negative feedback loop, the product of the loop inhibits whatever initiated the loop, preventing more product from being formed.

This is in contrast to a positive feedback loop, where the product of the loop further stimulates whatever initiated the loop, resulting in even more product being formed.

Explanation:

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