If right I’ll mark brainliest

Answer:

This question lacks options, options are:

A.They maintain the cell’s shape.

B.They regulate cell processes.

C.They protect the body from infectious agents.

D.They signal the immune system to destroy pathogens.

E.They speed up biochemical reactions.

F.They send electrical signals.

The correct answers are C and D.

Explanation:

B cells and T cells use different biological weapons to attack the pathogen. The first secrete proteins called antibodies, which are distributed via the blood or the exposed surfaces to the environment, such as mucous. Antibodies are glycoproteins that circulate in the bloodstream looking for antigens that cause some type of damage to the body. Antibodies recognize and neutralize pathogens in a highly efficient way. Once the antibodies are produced, they remain circulating in the bloodstream for several months, which generates immunity for a long period of time to a certain antigen, in other words, they are capable of recognizing other molecules (antigens) in a very specific way and forming stable complexes with them (immune complexes). Its appearance in plasma is part of the adaptive immune response, in what is known as a specific humoral response, constituting a very effective defense against pathogens.

Answer:

are disposable.

Explanation:

Manufacturers could reduce waste and conserve resources by making products that are disposable.

This ultimately implies that, manufacturers of finished products that are being used by the consumers should endeavor to make them easily disposable without any adverse effect on the environment.

Answer:

farmer may want to use artificially insemination to make sure that a specific breed of cows is in his/her herd.

Answer:

To be used by plants, the N2 must be transformed through a process called nitrogen fixation. Fixation converts nitrogen in the atmosphere into forms that plants can absorb through their root systems.

Explanation:

Answer:

no

Explanation:

Answer: Eukaryotic cells contain many membrane-enclosed, large, complex organelles in the cytoplasm whereas prokaryotic cells do not contain these membrane-bound organelles. Only eukaryotes possess a membrane-bound nucleus and membrane-bound organelles such as the mitochondria, golgi apparatus, lysosomes, peroxisomes.

detergent, acid, abrasive and degreasers.

I hope it helps you

Answer:

beauty and freshness both

Answer: IMA = Fr/Fe

Explanation:  

IMA stands for Ideal Mechanical advantage.

The IMA of pulley system can be defined as the ratio of output force to input force.

From the given pulley system,

The input force = Fe

The output force = Fr  

Hence, IMA of the given pulley system,

IMA = Fr/Fe

Answer:

Smaller populations have a greater chance of having one allele expressed disproportionately.

Explanation:

Genetic drift is defined as the a change in how frequently a gene allele occurs in a given population as a result of random sampling.

This random sampling is similar to having a coin toss that gives heads or tails.

Genetic drift has the tendency of making smaller populations have a greater chance of having one allele expressed disproportionately.

This is because when individuals in a small population mate there is a greater probability that an evolution will have more far reaching effects.

In a large population the effect will be less pronounced.

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The relationship described is predator-prey.

The orca is hunting and eating other organisms, which is known as a predator-prey relationship.

In case you need help with any more of these-

Mutualism is when both animals get something out of the relationship, for example, some kinds of shrimp get the food out of fishes teeth. The fish gets clean teeth, and the shrimp gets a meal.

Parasitism is fairly self-explanatory. This is when a parasite lives and gains from a host, while the host is harmed and could get diseases from the parasite.

Commensalism is when one animal benefits and the other isnt harmed nor benefited. An example of this is the remora fish which clings to the bottom of other fish when it gets tired.

Lastly, Competition. This is when two organisms compete for something they need to survive. For example, two lions could compete for a food source, such as a zebra. Usually, the strongest and fastest organism survives, or wins.

Alrighty, I hope this helped!!

Good luck with the rest of your assignment!!

Answer:

The boss at a factory gives out orders and directions.

Explanation:

The nucleus is an organelle that is enclosed by nuclear membrane and carry genetic material in eukaryotic cells.

The role of nucleus is to monitor and control the functioning of different activities such as growth and metabolism of the cell and also transfers the hereditary information. Likewise boss of a factory gives out orders and directions to regulate the factory properly.

Hence, the correct option is "The boss at a factory gives out orders and directions."

Answer:

Female mammals undergo X-chromosome inactivation during early embryogenesis, thereby females are mosaic for the expression of X-linked genes

Explanation:

In mammals, males receive only one copy of the X chromosome and one Y chromosome, while females receive two copies of the X chromosome. The X chromosome contains approximately 1,000 key genes involved in development. In human female embryos, one of these two copies of the X chromosome is inactivated to prevent the imbalance caused by a double dose of X-linked genes, a phenomenon known as X-chromosome inactivation. The inactivation of one X-chromosome is a random process, thereby female cells are mosaics for all heterozygous X-linked alleles, where some embryonic cells have an inactive maternal X chromosome, while other cells have an inactive paternal X chromosome.

Answer:    Plants make food in their leaves. The leaves contain a pigment called chlorophyll, which colors the leaves green. Chlorophyll can make food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight. This process is called photosynthesis.

Explanation:  do you know zayn malik

Answer:

a

Explanation:

Number a is the real evidence of that question

Cells are the basic unit of life. Living things are composed of cells.

All living creatures are aware of environmental changes and react to them. What happens, though, if you think you're treading on a rock but in fact, you're on a turtle shell.

Every living thing evolves and grows. For instance, a plant seed may appear to be a lifeless stone, but given the proper circumstances, it will grow and become a plant. Animals also change and advance.

Even the most basic life forms have a complicated chemical makeup. Large, intricate molecules make up living things, and in order to stay alive, they go through a great number of intricate chemical changes.

Therefore, Cells are the basic unit of life. Living things are composed of cells.

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Answer:

The term that refers to the functions of an organism are cells.

Answer:

Mass extinctions and background extinctions

Explanation:

Answer:

D. Reforestation

Explanation:

Reforestation is a natural or intentional way of restoring existing forests and woodlands by restocking it after they have been depleted through deforestation. Forest industry makes use of forest product for production this includes log, paper and pulp production. Ability to restock after felling of this tree for product making helps continuation.

Reforestation helps to rectify the effects of deforestation and this helps to improve our health in turn by absorbing pollution and dust from the air.

Answer:

All offspring will be short-winged.

Explanation:

The cell cycle in the correct order is G1, S, G2, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis.

Prophase, metaphase, anaphase, and telophase are the four phases that a cell goes through. To form chromosomes, chromatin condenses (sister chromatids joined at the centromere).

In prophase, the chromosomes get shorter and thicker, in the center of the cell, during the metaphase, the chromosomes align. Chromatids separate during the anaphase process and travel to the opposing poles.

Telophase: Two nuclei are produced when nuclear envelopes have reformed around each chromosomal group.

Therefore, the cell spends the majority of its time in interphase, which is also when it grows, duplicates its chromosomes, and gets ready to divide.

Learn more about cells, here:

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endocytosis is active not passive

Answer: Nervous system includes the brain which is the main center for interpreting various stimuli in the environment.

Explanation:

The nervous system detects the food stimulus. The chemical receptors present in the tongue detects the chemicals present in the food. These receptors send the impulses to the sensory neuron present in the brain.  The impulse is then transmitted to the relay neuron then to motor neuron and then finally to the muscles of the mouth. The muscles of the mouth help in spitting the food as the sensory neurons help in detecting the taste of the food and find it either edible or non-edible.

Answer:

What are the allele frequencies in this population?

In the next generation of 1000 hamsters, what are the expected genotype frequencies?

What are the expected number of each genotype in the next 1000 hamsters?

Have the allele frequencies changed? No, they are the same

Is the population in Hardy-Weinberg equilibrium? Yes, it is.  

The expected genotype frequency of Ss (2pq) in the next generation is expected to be: 0.469 (option a)

The expected number of smooth fur hamsters (SS) in the next generation of 1000 hamsters is: 390

Explanation:

Due to technical problems, you will find the complete answer and explanation in the attached files.  

Answer:

earthworms benefit  the soil

Explanation:

Answer and Explanation:

Microscope objects have thermal profiles. These profiles differ as a purpose of their physical parameters. Most objects are sold and designed for the resolution of fixed cell microscopy.

 There is little indication that the temperature cycle affects the strain characteristics. A large box can be constructed around the microscope and heated with hot air.

The heating system's cycling causes the specimen to drift out of focus and can also change the coverslip position.

The microscope can be equilibrated to a single temperature to eliminate the movement resulting from the thermal expansion of the microscope's components.

Air currents connecting the specimen chamber should also be reduced—tight control of temperature for the entire laboratory and microscope. Any change in the temperature can lead to unwanted movement in the microscope. Heating ducts often produce localized temperature changes.

Answer:

Copper,natural gas, petroleum

Explanation:

Copper and petroleum are found in South America. Most of the mines in the world are found in South America and they generates income to the Aldeans countries.

Also, petroleum reserves are found South America and they are very important, but not as as much as mineral reserves. Venezuela is the country that has the largest oil reserves, other countries like Peru or Ecuador have important reserves. natural gas is very common and present in the region, and it is also an important resource.

Answer: esterification

Explanation:

i looked it up in my textbook