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olga_2 [115]
2 years ago
13

Need ans asap thankssssss

Biology
1 answer:
Elis [28]2 years ago
4 0

Explanation:

electromagnetic waves: Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields.

radio waves: Radio waves are a type of electromagnetic radiation best-known for their use in communication technologies, such as television, mobile phones and radios. These devices receive radio waves and convert them to mechanical vibrations in the speaker to create sound waves.

microwaves: Microwave is a form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter corresponding to frequencies between 300 MHz and 300 GHz respectively.

infrared: Infrared (IR) light is used by electrical heaters, cookers for cooking food, short-range communications like remote controls, optical fibres, security systems and thermal imaging cameras which detect people in the dark.

visible ray: The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 380 to about 750 nanometers

ultraviolet:UV radiation is widely used in industrial processes and in medical and dental practices for a variety of purposes, such as killing bacteria, creating fluorescent effects, curing inks and resins, phototherapy and suntanning. Different UV wavelengths and intensities are used for different purposes

xray:An X-ray, or, much less commonly, X-radiation, is a penetrating form of high-energy electromagnetic radiation. Most X-rays have a wavelength ranging from 10 picometers to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (30×1015 Hz to 30×1018 Hz)

gama ray :A gamma ray, also known as gamma radiation, is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei.

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A gene is best defined as A) any random segment of DNA. B) three nucleotides that code for an amino acid. C) a sequence of nucle
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Answer:

C) a sequence of nucleotides in DNA that codes for a functional product.

Explanation:

Gene -

Gene is a fixed portion present in the chromosome of the cell , which is inbuilt with the hereditary information of the cell .

Genes directs the synthesis of the proteins .

It is basically a sequence of nucleotides present in the DNA .

Hence , from the given options the correct statement for gene is ( c ) .

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A finch population eats seeds that vary in size. There is variation in preference of seed type, and that variation positively co
ladessa [460]

Answer:

If larger seed became available, directional selection will act in favor of bigger beak finch.

Explanation:

In the case that more large seeds were to become available, then directional selection will start to influence in the beak size, favoring those individuals with bigger beaks. Those individuals with shorter beaks will start to disappear as these animals won't be able to eat the larger seed.

Directional selection <em>increases the proportion of individuals with an extreme phenotypic trait,</em> in this case, large beaks.

This selection presents more frequently in those cases in which <em>interactions between living organisms and the environment</em> modify in the same direction.

6 0
3 years ago
After using jelly on a sandwich, you close the jar and place it on a room temperature shelf instead of in the refrigerator. When
kakasveta [241]

Answer:

a fungus

Explanation:

Fungi is any group of eukaryotic organisms , and examples are yeast, molds and mushrooms.

They are known to be common in the environment, because they can live in the air, soil, water and plants. And they are known to grow best or thrive under a warm condition.

They are classified into four divisions , they include

* Chydridiomycota

* Zygomycota e.g bread mold

* Ascomycota e.g Yeast

* Basidiomycota e.g club fungi

In this case, the organism that will be noticed on the jar after several weeks will be a fungus, because , the mold is a type of fungus that feed saprophitically on food substances. Also the fungus grow best in a warm temperature.

7 0
3 years ago
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The water content of a typical human cell is around 65 - 70%. Using your knowledge of cellular anatomy and physiology, what is t
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Carbohydrates are complex, organic biomolecules, composed of hydrogen, carbon, and oxygen atoms. Examples of carbohydrates include glucose, sucrose, starch, and glycogen.

Carbohydrates are primary source of energy for the cells of all living organisms. In a typical human cell, the carbohydrate content is around 1-5 percent.

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3 years ago
"which body cavity would be opened for a total knee joint replacement"
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Answer;

-Synovial cavity

Explanation;

-The synovial cavity/joint is filled with synovial fluid. A synovial joint contains a synovial cavity and dense, irregular connective tissue that forms the articular capsule normally associated with accessory ligaments.

-A synovial joint occurs at articulating bones to allow movement. It is distinguished by a surrounding synovial capsule.The bones of a synovial joint are surrounded by a synovial capsule, which secretes synovial fluid to lubricate and nourish the joint while acting as a shock absorber.

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