A yeast cell that forms a bud is called the "mother cell." Why is there no mother cell after a paramecium divides?

Answer:

Heredity

Explanation:

The offspring cells collect genetic information from their parents.

Answer:

The correct answer is comets.

Explanation:

Comet is an icy, small, and rocky bodies found in space, which discharge gas or dust. They are also called dirty snowballs. It is not considered as the satellite of other objects. It does not exhibit adequate gravity to clear away smaller objects close to its orbit. When it passes close to the Sun, it sheds extra of its ice, and its surface may get surrounded with darkish dirt and would seem more like an asteroid.

Final answer:

The characteristics of Object Y—being small and rocky, as well as its inability to clear its orbit—most closely resemble those of dwarf planets within our solar system.

Explanation:

The characteristics of Object Y most closely resemble those of other dwarf planets. Like Object Y, dwarf planets are small and rocky objects that do not have enough gravity to clear away smaller objects near their orbits. Although comets, asteroids, and meteors are also part of our solar system's collection of smaller objects, they each have distinct features that do not match the description of Object Y as closely as dwarf planets do. Comets are mostly icy and have elliptical orbits that can bring them close to the Sun, producing visible tails and comas. Asteroids are rocky like Object Y, but the term typically refers to those found within the asteroid belt between Mars and Jupiter, and they do not have the criterion related to clearing their orbits. Meteors are much smaller, often vaporizing in Earth's atmosphere, and moons are objects that orbit planets, which is not the case for Object Y.

Answer:

There are many receptors for thyroxine on different target cells (tissues), so its effect can be huge

Explanation:

Target cell for a certain hormone is a cell that have hormone receptor specific for that hormone. There are two main types of receptors on target cell:

Hormone binding to the receptor leads to the signal cascade within the cell, which results in cell response.

Receptors for thyroid hormones are nuclear receptors.

Answer:

The cell structure that is been described in the question is CELL WALL.

Explanation:

The cell wall is one of the cell organelles that are found only in plant cells. Plant cell walls are made up of a polysaccharide called cellulose. The cellulose gives rigidity to the plant cell wall and enhances its ability to provide structural support for plant cells. The plant cell wall also serves as a barricade that protect the cell from invasion by foreign bodies.  

The plant cell wall is the structure that provides support and protection for plant cells.

The plant cell wall has three functions: it supports the structure of the plant as a whole, protects individual cells by acting as an enclosure, and facilitates fluid flow by assisting in the formation of channels inside the plant.

The cell wall isolates the inner elements from the surrounding environment. The cell and its organelles are also given form, support, and protection by it. But only eukaryotic plants, fungi, and a few prokaryotic creatures have this cellular component.

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Answer:

it copies the DNA of both parent cells

Explanation:

Interphase is a cell cycle stage where the cell grows, duplicates its organelles, synthesizes DNA, and prepares for mitosis, which is followed by cytokinesis to form two daughter cells.

During interphase, a cell undergoes growth, duplicates its organelles, and prepares for cell division. This phase is characterized by three distinct stages: the G1 phase (also known as the first growth phase), the S phase (DNA synthesis), and the G2 phase. In the G1 phase, the cell grows in size, performs normal metabolic processes, and starts replicating organelles. Entry into the S phase marks the beginning of DNA replication to ensure each new cell has an identical set of genetic material. Finally, in the G2 phase, the cell continues to grow, makes additional proteins and organelles, and prepares for mitosis. The mitotic phase follows interphase, which includes the processes of mitosis and cytokinesis, resulting in the formation of two genetically identical daughter cells.

Answer:

B) The 5' to 3' direction of the other strand runs counter to the 5' to 3' direction of the other strand.

Explanation:

Two strands in DNA double helix are in opposite directions alongside each other and that is called antiparallel orientation.

The 5' end of nucleic acid refers to  phosphoryl end (phosphate group) while 3' end refers to hydroxyl (OH) group.

The property of anti-parallelism is important for the process of DNA replication.

In terms of DNA, 'antiparallel' describes the opposite orientations of the two strands in a DNA double helix, with one strand running 5' to 3' and the other 3' to 5', allowing proper base pairing and function of DNA-synthesizing enzymes.

The term antiparallel in the context of DNA refers to the orientation of the two strands that make up the DNA double helix. They are parallel but run in opposite directions. Specifically, one strand is oriented 5' to 3', while the complementary strand is oriented 3' to 5'. This arrangement is crucial for the DNA's functions, such as replication and repair, and it allows the enzymes that synthesize DNA, like DNA polymerase, to operate properly. Because the DNA strands are antiparallel, complementary base pairs can form the correct hydrogen bonds, with adenine (A) always pairing with thymine (T) and guanine (G) always pairing with cytosine (C).

Answer:

Warm water moving toward the coast of South America

The correct answer is B. Warm water moving toward the coast of South America

Explanation:

El Niño is a phenomenon in the climate that mainly occurs as warm ocean water develops in the Pacific Ocean especially in the Equator Pacific including the coast of South America. This causes changes in pressure due to the temperature in the ocean water as well as changes in the rain. Additionally, this phenomenon is the opposite of the one of La Niña in which the temperature in the ocean is colder rather than warmer. Also, these types of climate changes are part of cycles that last around a year but can take place over multiple years. Therefore, the climate condition that occurs during this phenomenon is warm water moving toward the coast of South America.

Answer:

10

Explanation:

The pigs tend to have very large litters. A sow that has been fed and kept well usually has around 10 piglets per litter. While 10 piglets are somewhat the normal number, there are many cases when a sow has produced 15 or 20 piglets per litter. Not just that the liters are very large, but a sow can produce not one, but two litters per year, making it an animal that has extremely quick reproductive cycle for its size. The gestation period is also not long for the size of these animals, and it usually lasts between 112 and 120 days. When the piglets are born they are very small and helpless at first, but they manage to grow and mature very quickly, reaching sexual maturity at only between 3 and 12 months of age, thus becoming adults in a very short time span.

Answer:

Computer recycling, electronic recycling or e-waste recycling is the disassembly and separation of components and raw materials of waste electronics

Answer:

E -waste

Explanation:

All the waste that is generated from electronic waste is called E-waste. All devices related to computer technology and software are electronic products thus waste  generating  from such products will fall under the category of electronic waste.  

These e –waste cannot be disposed of like other landfill waste as they contain microchips, copper wire, etc, thus need special attention while disposal.

Answer:

Forebrain.. Which also includes thalamus.

Olfactory information is sent to all of the following areas except the medulla. This sensory information travels through unique pathways, which include direct connections to the olfactory cortex and related structures without the obligatory thalamic relay that is typical for other senses.

Olfactory receptors in the nose pick up odorants and send signals to the olfactory bulb. The olfactory bulb then routes these signals to several brain regions, including the olfactory tubercle, the medial dorsal nucleus of the thalamus, the orbitofrontal cortex, and directly to the olfactory cortex and related temporal structures like the hippocampus. These pathways are unique in that they do not require the thalamus for initial processing, unlike other sensory systems. Olfactory information is also involved in various functions such as odor discrimination, and emotional, motivational, and memory-related aspects of smell, which are processed by areas of the brain dealing with memory, emotions, reproduction, and thought.

The correct answer is C

The. diathesis-stress model hypothesizes that genetic vulnerability interacts with environmental factors to stimulate asthmatic reactions.​

The stress model assumes that mental illness results from the interaction between inherent vulnerabilities and environmental stressors. In Psychopathology

, such interactions between psychopathology and environmental factors are associated with stressful conditions in which mental and physical disorders, from genetic or biological predisposition, play a facilitating or facilitating role. It is proved by the theory that it develops into the disease (diabetes). Stress is Also known as the stress hypothesis (or paradigm or theory).

On the other hand, depending on the living environment, it may represent both predisposition and stress. For example, a child with a parent who has a mental illness may be genetically vulnerable to the illness and may be under stress due to the parent's condition.

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A.mechanoreceptor

Thermo-temp

Chem-chemical

Photo-light

Answer: A. mechanoreceptor  

Explanation:

A mechanoreceptor is a sensory receptor that detects and responds to stimuli like mechanical pressure, vibration, touch, and sound that a living organism receives from the external or internal environment. These receptors are stimulated as a result of reflex muscle contraction which controls certain adaptive movements like acceleration and deceleration.

These characteristics are useful because they help the cell to carry out its normal activities

Cells have different shapes and features depending on their functions. Tailed cells move with their tails as seen in sperm cells. Cells with chlorophyll, like plant cells, convert light energy to chemical energy for photosynthesis. Some cells have 'hairs' or cilia, helping in movement or in moving substances past the cell.

The different characteristics of cells have specific purposes. Cells with tails, like sperm cells, use their tails for movement. They swim to reach the egg for fertilization. On the other hand, cells with chlorophyll, found primarily in plants, use this pigment for photosynthesis, the process of converting light energy into chemical energy. Cellular 'hairs' or cilia, help in movement or in moving substances past the cell.

These diverse forms and features of the cells make them specially adapted to their specific functions in the organism. It's a perfect example of how structure complements function in the realm of biology.

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Answer:

overall strategic statements

Answer:

450

Explanation:

Hence, 450 is a good estimate of the railroad’s average elevation.

A railroad grade pocket watch exists absolutely a watch that was approved by a particular railroad organization for utilize by conductors on their rail.

Elevation stands distance above sea level. Elevations exist usually measured in meters or feet. They can be displayed on maps by contour lines, which connect points with the same elevation; by bands of color; or by numbers presenting the exact elevations of particular points on the Earth's surface.

Hence, 450 is a good estimate of the railroad’s average elevation.

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Answer:

its D

Explanation:

the facts are just all there

Answer:

C) acceleration; change in velocity.

Explanation:

When an object is moving around in a circulation motion with constant speed then even if the movement is constant still the velocity is changing at each point because of the change in the direction at each point. If the velocity is changing at each point then that means the object is accelerating.

But, in linear motion if an object has constant movement then the acceleration is considered zero because there is no change in the direction so velocity change is considered zero.

Since the carousel in this question is moving in the circular motion so it means that its direction is changing at each point which implies that its velocity is changing leading to acceleration.

Answer:

Except phytoplankton, all are consumers

Explanation:

Consumers are those which directly or indirectly depends on autotrophs for food.

Here

Krill is primary consumers

Seals, whale, sea birds are 2° consumers and primary carnivores.

Shark is 3° consumer and 2° carnivore..or top carnivore

Answer:

b

Explanation:

Answer:

dimerization and phosphorylation

Explanation:

Protein kinase receptors are simply saying receptors with associated kinases (usually tyrosine kinases).

Protein kinases are enzymes that have the ability to modulate other enzymes (or some other proteins) by adding the phosphate group. This is known as phosphorilation process. As a result of structural change, protein can change its activity (phosphorilation usually increase the activity).

Such receptors are involved in a many processes within an organism that are important for the cellular growth, differentiation, metabolism .

The activation of receptor tyrosine kinases involves dimerization, autophosphorylation of tyrosine residues, and a downstream cellular response. Afterwards, a phosphatase enzyme deactivates the signal to terminate the process.

The activation of receptor tyrosine kinases is characterized by the binding of a signaling molecule to the extracellular domain, causing the receptor to dimerize. This dimerization enables tyrosine residues on the intracellular domain of the receptor to be autophosphorylated, initiating a downstream cellular response. Once the signal is completed, a phosphatase enzyme deactivates the signal by removing the phosphates from the phosphotyrosine residues. This is a critical process in various cellular activities like metabolism, protein expression, and cell division.

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Answer:

From the sunlight (together with CO2 and water)

Explanation:

Photosynthesis is a process performed by the plants (also some algae and bacteria) in which the energy of sunlight is transformed into chemical energy usable by those plants. Necessary components of this set of reactions are sunlight, water and CO2, while resulting products are glucose and oxygen. Products of photosynthesis are then used in the metabolic processes known as cellular respiration. During the cellular respiration, glucose and oxygen are used for the production of ATP, CO2 and water. Cellular respiration is performed in all living organisms.

Photosynthesis occur in the chloroplast, membrane organelles with photosynthetic pigments (such as chlorophyll).

The energy for photosynthesis comes from the sun. Plant-based organisms capture this energy and convert it into a form that is usable by all life through a process known as photosynthesis. This process underpins much of the energy transformation that supports life.

The energy for photosynthesis comes from the sun. In this process, green plants, algae, cyanobacteria, and photosynthetic protists capture solar energy and convert this into chemical energy necessary for life - a process known as photosynthesis. This process transforms the radiant energy in sunlight into stored chemical energy.

Part of this process involves using light energy from the sun to transform carbon dioxide and water into glucose and oxygen. Other organisms consume these glucose-bearing plants and use the glucose to create ATP, a molecule used for energy storage in cells.

Overall, it's the energy from the sun that is harnessed through the process of photosynthesis that provides most of the energy required by living organisms on earth. Without the solar energy captured during photosynthesis, life as we know it would not exist.

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Color blindness is more common in males due to the inheritance of the recessive gene on the X chromosome, and males have only one X chromosome.

Color blindness is more prevalent in males due to the genetic basis of the condition. The genes responsible for color vision are located on the X chromosome. Since males have one X and one Y chromosome (XY), while females have two X chromosomes (XX), a male inherits his X chromosome from his mother and the Y chromosome from his father.

If a male inherits a recessive color blindness gene on the X chromosome from his mother, he lacks the corresponding gene on the Y chromosome to compensate, leading to the manifestation of color blindness. In contrast, females would need to inherit two recessive genes (one from each parent) to express color blindness, making it less common in females. The genetic inheritance pattern on the sex chromosomes contributes to the higher incidence of color blindness in males.

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The answer is C) cortex

The majority of glomeruli are located in the cortex of the kidney, where they form part of the renal corpuscles and are adjacent to the tubular structures involved in urine formation.

The majority of glomeruli are located in the cortex of the kidney. This region of the kidney houses all of the renal corpuscles as well as the proximal convoluted tubules (PCTs) and distal convoluted tubules (DCTs). Some nephrons within the cortex are termed cortical nephrons and have a shorter loop of Henle that does not extend beyond the cortex, whereas about 15 percent of nephrons, which are called juxtamedullary nephrons, have long loops of Henle that plunge deep into the medulla.

The other options provided do not accurately describe the location of the majority of glomeruli. The vasa recta and medulla house the renal pyramids and longer loops of Henle associated with juxtamedullary nephrons, pelvis is the area into which the renal pyramids drain before connecting to the ureter, and calyces are the chambers that collect urine before it passes into the renal pelvis.

Answer: Dermatomes are similar; however, a dermatome only specifies the area served by a spinal nerve. In some cases, the dermatome is less specific (when a spinal nerve is the source for more than one cutaneous nerve), and in other cases it is more specific (when a cutaneous nerve is derived from multiple spinal nerves.)

Explanation:

The chemical breakdown of proteins is initiated in the stomach by the enzyme pepsin and continues in the small intestine with additional enzymes from the pancreas.

Where Is the Chemical Breakdown of Proteins Initiated?

The enzyme pepsin, which is activated from its precursor form pepsinogen in the presence of hydrochloric acid (HCl), starts the process by breaking down proteins into smaller chains called polypeptides. This chemical reaction is crucial for protein digestion, allowing amino acids to be eventually absorbed into the bloodstream. As the partially digested proteins pass into the small intestine, they encounter additional digestive enzymes from the pancreas such as trypsin and chymotrypsin, which continue the process of breaking down the proteins into even smaller peptides and eventually into amino acids. These amino acids are then absorbed through the intestinal wall and into the bloodstream, where they are carried to the liver for further processing.

Hey there! :D

Organization in organisms is like this:

cells => tissues => organs => organ systems => organisms

Since we are talking about a group of cells, this would be a tissue. Don't let the word 'function' confuse you. Tissues do functions as well as an entire organ or organ system.

It is helpful to use the flow chart when asked questions like these, so make sure to memorize it! It will be helpful in any level of science.

I hope this helps!

~kaikers

Answer:

B) dimerization and phosphorylation

Explanation:

Protein kinase receptors are simply saying receptors with associated kinases (usually tyrosine kinases).

Protein kinases are enzymes that have the ability to modulate other enzymes (or some other proteins) by adding the phosphate group. This is known as phosphorilation process. As a result of structural change, protein can change its activity (phosphorilation usually increase the activity).

Such receptors are involved in a many processes within an organism that are important for the cellular growth, differentiation, metabolism.

The activation of receptor tyrosine kinases involves dimerization, where two similar receptors bind together, followed by phosphorylation, which activates a downstream cellular response. A phosphatase enzyme eventually terminates this signal.

The activation of receptor tyrosine kinases is characterized predominantly by dimerization and phosphorylation. Initially, a signaling molecule binds to the extracellular domain of the receptor which leads to its dimerization i.e., the joining of two receptor molecules. This allows their intracellular domains to come nearer and activate each other.

Following dimerization, the receptors undergo phosphorylation. Each receptor, within the dimer, catalyzes the addition of a phosphate group to tyrosine residues on the intracellular domain of the other receptor in the dimer. This process is referred to as 'autophosphorylation'. Autophosphorylation triggers a downstream cellular response which could involve various processes such as modifying cell metabolism, protein expression, or cell division. Lastly, a phosphatase enzyme terminates the signal by removing the phosphate groups from the phosphotyrosine residues.

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Answer:

a. suprachiasmatic nucleus.

Explanation:

The circadian rhythm is an internal process that regulates daily cycle (sleep/wake conditions through the 24 hours). This process is performed by circadian clock which is located in hypothalamus, in the suprachiasmatic nucleus. It has been shown that when the suprachiasmatic nucleus is destroyed, regular sleep–wake rhythm is lost.

The suprachiasmatic nucleus sends information to the pineal gland, which secretes hormone melatonin (regulator of  sleep–wake cycle).

Final answer:

When ATP is broken down, it produces adenosine diphosphate (ADP) and an inorganic phosphate group (Pi). This process releases energy due to the lower free energy of the products compared to the reactants.

Explanation:

When ATP is broken down in cells, the products are adenosine diphosphate (ADP) and an inorganic phosphate group (Pi). This process is known as hydrolysis, which is the reaction involving the cleavage of bonds by the addition of water. ATP, consisting of an adenine, a ribose, and three phosphate groups, releases energy when the bond between the second and third phosphate groups is broken. This energy release occurs because the products, ADP and Pi, have considerably lower free energy than the reactants, ATP and a water molecule. Hence, the correct answer to the question is:

A. adenosine diphosphate; a phosphate group

Habitat loss for animals, Animal Extinction,destruction of top soil, chemical polluting , loss of biodiversity

Answer:

disruptive

Explanation:

Sympatric speciation is a speciation (evolution of new species) that occurs when one group of population becomes isolated, but stays in the same geographic location as the rest of the population. Through time, these two group evolve independently and become different species.

The model that shows this type of speciation involves disruptive selection: homozygous individuals are favoured over heterozygous in a population, which leads to speciation.

Sympatric speciation generally requires disruptive selection, which favors extreme phenotypes, leading to reproductive isolation and creation of new species within the same habitat.

In general, sympatric speciation requires the action of disruptive selection acting against hybrids. Disruptive selection plays a crucial role in sympatric speciation by favoring extreme phenotypes over intermediate ones, thereby driving the divergence within a population sharing the same habitat. This pattern of selection can eventually lead to reproductive isolation and form new species without physical barriers. It contrasts with directional selection which favors one extreme phenotype and stabilizing selection that favors the intermediate phenotype, or artificial selection that is influenced by human choice.

Probably C I doubt it’s D

Answer:

A. It causes pathogens to stick together.

Explanation:

Antigens are the antibody generating substances present on the surface of the pathogen such as bacteria, viruses and fungi.  When an antibody binds to an antigen (proteins on the surface of pathogens), it makes the pathogens to stick together. This limit the movement of the pathogens around the body and this allows phagocytes to engulf and then destroy them easily.