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An enzyme is a protein that_____ transports nutrients across a membrane increases the rate of a chemical reaction receives and sends signals across a cell provides structure for the cell’s organelles

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Answer:

The given blank can be filled with that it increases the rate of a chemical reaction.

Explanation:

A substance or a component, which functions as a catalyst in the living species, monitoring the rate at which chemical reactions advances without itself getting changed in the entire process is known as an enzyme. The enzyme works by enhancing the rate of a chemical reaction. The biological procedures that take place inside the living species are the chemical reactions, and the majority of these are monitored by enzymes. In the absence of enzymes, several of these reactions would not occur at the desired rate.

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What is the nucleolus? A.the membrane surrounding the nucleus B.the entire DNA found in a cell C.an information organelle that makes protein D.a ball of fibers inside the nucleus I REALLY NEED HELP PLZ AND THANKS

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What is the nucleolus? A.the membrane surrounding the nucleus B.the entire DNA found in a cell C.an information organelle that makes protein D.a ball of fibers inside the nucleus I REALLY NEED HELP PLZ AND THANKS

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What is the function of proteins and carbohydrates that are embedded in a cell membrane

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Answered by answersmine AT 22/10/2019 – 04:26 AM

Carbohydrates covalently linked to proteins (glycoproteins) or lipids (glycolipids) are also a part of cell membranes, and function as adhesion and address loci for cells. The Fluid Mosaic Model describes membranes as a fluid lipid bilayer with floating proteins and carbohydrates.

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Which statement best distinguishes the light-dependent (L-D) reactions from the light-independent (L-IND) reactions? The L-D reactions occur in the thylakoid membrane, and the L-IND reactions occur in the stroma. The L-D reactions occur in the cytoplasm, and the L-IND reactions occur in the chloroplast. The L-D reactions occur in the chloroplast, and the L-IND reactions occur in the mitochondria. The L-D reactions occur in the stroma, and the L-IND reactions occur in the cytoplasm.

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Which statement best distinguishes the light-dependent (L-D) reactions from the light-independent (L-IND) reactions? The L-D reactions occur in the thylakoid membrane, and the L-IND reactions occur in the stroma. The L-D reactions occur in the cytoplasm, and the L-IND reactions occur in the chloroplast. The L-D reactions occur in the chloroplast, and the L-IND reactions occur in the mitochondria. The L-D reactions occur in the stroma, and the L-IND reactions occur in the cytoplasm.

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The cell membrane around a cell forms a barrier that protects and regulates the cell. Certain chemicals can pass through the plasma membrane because they have similar chemical properties as the membrane. Which best describes those that can pass through? They are concentrated. They are soluble. They are diluted. They are heated.

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The cell membrane around a cell forms a barrier that protects and regulates the cell. Certain chemicals can pass through the plasma membrane because they have similar chemical properties as the membrane. Which best describes those that can pass through? They are concentrated. They are soluble. They are diluted. They are heated.

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The cell membrane of a red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. Since other substances are blocked from coming in, this is membrane is called: A) perforated B) semi-permeable C) non-conductive D) permeable

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Correct answer: C). Genetically different haploid cells

Meiosis is a type of cell division in which four haploid cells are produced, which are genetically different from the parent. It reduces the chromosome number exactly half as contained in the parent. That is why it is called as a reductional division.

In the first round of meiosis I homologous pairs of chromosome separate and the sister chromatids separate during meiosis II.

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Organelles areresponsible for producing power for the cell .tiny structures in the cell that carry out the cells activities.responsible for digestion in the cell.found outside of the membrane

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The right answer is Transgenic organisms can produce a desired product that may benefit other organisms.

A transgenic organism contains DNA combining  stably integrated in all its cells. In other words, the organism, be it a plant, an animal or a microorganism, has a new piece of DNA embedded in it. a chromosome in each of its cells. This “new piece” of DNA usually contains a gene from another organism (plant, animal or other) that has been modified to be expressed in the new  organization. A transgenic organism may even possess the DNA of another organism of the same species. The inserted gene can be called the transgene.

Currently, diabetics are treated by injecting insulin from either a healthy human donor or cultures of genetically modified (transgenic) bacteria that secrete the protein.

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Diffusion across the cell's outer membrane:

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Diffusion across the cell’s outer membrane:

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Which of the following is an example of how HIV can be transmitted from one person to another? 1.Contact between infected blood and a mucus membrane 2.Contact between infected saliva and an open wound 3.Contact between infected blood and skin 4.Contact between infected saliva and lining of mouth Please answer quickly!!

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1. The answer is “C”.

“Identical twins” who have been raised apart are typically more similar in intelligence level than biological siblings raised together because they have been born with the same genetic code.

Identical twins originate from a single fertilized egg that parts into two. Before it parts, it is either male or female. After it parts, there are either two guys or two females. The two sections of the fertilized egg embed in the uterus and every create one of the twins.  

Identical twins have the equivalent hereditary source. No immediate reason for monozygotic twinning has been resolved; it isn’t innate. Monozygotic twins speak to around 33% all things considered. They may look strikingly comparative, and it might be hard to reveal to them separated.

2. The answer is “A”.

Lawrence Kohlberg felt that one of the only ways individuals will accomplish the objectives in each of his six stages was to participate in “consensus democracy” in small group settings.

Lawrence Kohlberg felt that the best way to support development through these stages was by discourse of good problems and by investment in consensus democracy inside small groups. Consensus democracy was rule by understanding of the gathering, not larger part rule. This would invigorate and widen the reasoning of youngsters and grown-ups, enabling them to advance starting with one phase then onto the next.

3. The answer is “D.  showing a learner how to correct common mistakes”.

The term scaffolding alludes to a procedure in which instructors display or exhibit how to take care of an issue, and afterward venture back, offering support as required. Analyst and instructional architect Jerome Bruner first utilized the term ‘scaffolding’ in this setting, harking back to the 1960s. The hypothesis is that when understudies are given the help they require while discovering some new information, they stand a superior possibility of utilizing that learning freely. Bruner suggests positive association and three methods of portrayal amid educating: activities, pictures, and dialect.  

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Phospholipids are the main component of which of the following organelles? Flagella Lysosomes Cytoskeleton Plasma membrane

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There are two systems in the human body that are responsible for the coordination between the functions of different systems to achieve the unity of the living organism’s body. These two systems are the nervous system and the endocrine system. The action of the nervous system is fast and takes a short time, while the action of the endocrine system is slow and takes a long time.

The functional unit of the nervous system is the nerve cell or the neuron. The neuron consists of a cell body and the axon. The cell body starts with the dendrites that receive the messages or the impulses from other neurons or from different sense organs or receptors. These impulses are then transmitted through the cell body. The cell body contains a nucleus and different organelles which help the nerve cell to perform its functions. The nerve impulse is then transmitted to the axon.

The axon is an extension from the cell body. There are some cells called Schwan cells that secrete a myelin sheath to insulate the axon from the surrounding medium. The insulated axons have more ability to conduct the impulses than non-insulated axons. The axon ends with the terminal arborizations. The terminal arborizations of a nerve cell connect to the dendrites of the next cell or to the afferent organ. The gaps between the dendrites and the terminal arborizations are called the synapses.

The nerve impulse is an electrochemical phenomenon i.e. an electrical phenomenon with a chemical nature. The membrane of the axon acts as a barrier between an outside positively charged medium and an inside negatively charged medium. This makes a potential difference of  -70mV. This state is called the resting potential. When the membrane is subjected to a stimulus, the positive charges enter to inside and the negative charges exit to the outside. The potential difference now becomes +40mV. This state is called the depolarization state. The point of stimulation acts as a new stimulus for the next point and so on. The membrane sooner gains its permeability again and the positive charges return to the outside and the negative charges to inside. This state is called repolarization.

The nerve impulse reaches the synapse. There are some neurotransmitters that are excited by the nerve impulse coming and carry the message across the membrane. Some receptors receive theses neurotransmitters on the dendrites of the next neuron. These receptors act as a stimulus for the new cell.

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How is mitosis different in plants and animals? A.In plants, the DNA is one circular chromosome. B.In animals, the cell membrane pinches together. C.In animals, a new cell wall forms. D.In plants, there are no sister chromatids.

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How is mitosis different in plants and animals? A.In plants, the DNA is one circular chromosome. B.In animals, the cell membrane pinches together. C.In animals, a new cell wall forms. D.In plants, there are no sister chromatids.

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The cell membrane helps maintain ________ in the cell by controlling what comes in and out of the cell. proper organelle levels proper size homeostasis temperature Answer quickly please

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The cell membrane helps maintain ________ in the cell by controlling what comes in and out of the cell. proper organelle levels proper size homeostasis temperature Answer quickly please
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The innermost membrane enveloping the embryo in the uterus is the

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Vacuole: is a cavity in the cytoplasm of a cell that contains inorganic or organic material such as fluid, food, or waste.
lysosome: are organelles that contain digestive enzymes. They digest excess or worn out organelles, food particles, and engulfed viruses or bacteria.
Mitochondria: is the “powerhouse” of the cell. They take in nutrients, break it down, and creates energy rich molecules for the cell.
cell membrane: protects the cell from its surroundings. It consists of a layer of lipid bilayer with embedded proteins.

I really hope this helps:)

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Proteins destined for extracellular release are packaged in specific vesicles. After packaging, the vesicles bud off and are stored in the cell until a signal is given for their release. When the appropriate signal is received they move towards the membrane and fuse to release their contents. Once proteins have been produced at the ribosomes, what two organelles work together to aid in the secretion process described above? A) ribosome and ER B) Golgi apparatus and rough ER C) Golgi apparatus and lysosome D) mitochondria and rough endoplasmic reticulum

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Ans. (D) couples who are planning to have children.

Genetic counselors are healthcare experts, who advise peoples and families having risk of genetic disorders or are affected by genetic diseases to guide them about psychological, medical, and familial implications of factors for the disease.

Generally, they work with couples who are planning to be parents as they perform genetic testing. They provide information about risk of genetic disorders in their children, if there is close family member affected or with risk of genetic disease.  

Thus, the correct answer is option (D).

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Eukaryotic cells contain membrane bound organelles give 5 examples

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Answer: Phagocytosis and pinocyotosis.

Explanation:

Endocytosis is a cellular process in which the substance are bought into the cell. It can be food, dissolved particles, damaged cell, et cetera.

It consists of pinocytosis and phagocytosis. The material that has to be ingested inside the cell is surrounded by the area of the cell membrane, which turns into a vesicle that contains the ingested material.

The Pinocytosis can be defined as cell drinking and phagocytosis can be defined as cell eating.

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What factors affect the diffusion of water through a membrane by osmosis?

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Answer:

1. The school board wants to clear the forest surrounding the local high school to build more fields for high school sports. Following environmental factors need to be investigated before clearing the land:

1. Destruction of natural ecosystem: As forest will be cut the land will be barren. There will be loss , extinction and migration of faunal species. So, the normal balance of ecosystem will b disturbed.

2. Chances of climatic fluctuations: As, forest will be cleared, the water, carbon and oxygen cycle in the atmosphere will be disturbed. The region may not acquire adequate rainfall, temperature of the area will change drastically.

3. Soil erosion: As, forest will be cleared the soil will not be hold up and the loose soil gets wiped out from the location by water or air.The cutting of trees can cause flooding from nearby water body.

2. Two ways to reduce air pollution and slow climatic change are:

1. Control use of fossil fuels: Fossil fuels like coal, petrol, kerosene are used in automobiles, industries and house hold activities. These fossil fuels are organic in nature and adds up carbon dioxide, carbon monoxide, nitrogen dioxide gases in air and raises the atmospheric temperature and are responsible for air pollution. Therefore, the use of fossil fuel should be in control manner.

2. Planting more number of trees: The trees are responsible for fixing atmospheric carbon from air for photosynthesis. So, they can decrease the amount of atmospheric carbon abundantly present in forms of carbon dioxide and carbon monoxide, which are chief air pollutants. These carbon products are responsible for raising temperature so planting of trees can prevent raise of temperature.

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How is a factory gate and doors like a cell membrane?

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Passive Transport: Simple Diffusion

Diffusion across a cell membrane is a type of passive transport, or transport across the cell membrane that does not require energy. Remember that the cell membrane is a phospholipid bilayer. Although the inside and the outside of a cell are both water-based, there is a hydrophobic region in the middle, and this is an important barrier to anything large, charged, or hydrophilic. Molecules that are hydrophobic, just like the hydrophobic region, can pass through the cell membrane by simple diffusion.

Therefore, simple diffusion is the unassisted passage of small, hydrophobic, nonpolar molecules from a higher concentration to a lower concentration. Very small molecules can slip through the cell membrane, too, even if they are hydrophilic – just like a few ants might crawl through a crack in the wall just because they’re tiny.

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Which of the following are functions of the immune system? Select all that apply. A. Bones produce extra white blood cells to increase it’s defense against germs B. The body filters the blood for waste materials C. Cell membrane keeps germs fro entering the cell D. Lymphocytes create antibodies that attach to the germ.

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Answer;

D. Its body cells would have 40 chromosomes, and its gametes would have 20 chromosomes

Explanation;

-A diploid number of chromosomes means that a cell has two sets of chromosomes in their nucleus, while haploid number of chromosomes means that the cells have only one set of chromosome pairs.

-Somatic cells or body cells divide by mitosis, which means the diploid number of chromosomes is always retained, as the daughter cells are similar to the parent cells. In gametes cells on the other hand, they are haploid since they result from the process of meiosis which halves the number of chromosomes.

-Therefore, in this case,the body cells would have 40 chromosomes, which is the diploid number, and its gametes would have 20 chromosomes, the haploid number.

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