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3 years ago

The fact that _____ is electronegative gives a water molecule a partial positive side.

Biology

1 answer:

Stella [2.4K]3 years ago

6 0

Answer:

Oxygen

Explanation:

In a molecule of water ie H20, Oxygen is more electronegative and hence attracts more electrons to itself making Hydrogen partially positive ‍♂️

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In an environment, too many organisms of one species is present, exceeding the carrying capacity. What is most likely? A The ani

vladimir2022 [97]

Answer:

A: The animal population will decrease

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2 years ago

1. state the characteristics of Chrysophytes.

GuDViN [60]

1. Chrysophytes

⇒ Unicellar

⇒ Present in water bodies with low calcium levels.

⇒ Golden yellow colour due to accessory pigment.

⇒ Cell walls made of cellulose and silica.

⇒ Free swimming.

⇒ Two unequal flagella.

2. Dinoflagellates

⇒ Dinoflagellates are essentially golden-brown, biflagellate, unicellular motile protists.

⇒ Golden brown is the primary color, but due to changes in the ratios of other pigments, it may also take on yellow, green, brown, or even blue forms.

⇒ Theca or lorica, composed of articulated and sculpted cellulose plates, is a stiff covering that typically covers cells.

⇒ One flagellum is transverse and the other is longitudinal, making the two flagella distinct (heterokont).

⇒ Mesokaryon is the name given to the big nucleus.

⇒ Chlorophyll a and chlorophyll c are found in plastids or chromatophores.

⇒ In the sea, certain dinoflagellates like Gymnodinium and Gonyaulax proliferate in vast numbers, turning the water red and resulting in the so-called "red tide."

⇒ Dinoflagellates in the ocean exhibit bioluminescence. such as Noctiluca.

3. Euglenoids

⇒ Unicellular protists called euglenoids, like the genus Euglena, are frequently found in freshwater.

⇒ The pellicle, a protein-rich cell membrane, exists in place of the cell wall.

⇒ They bear two flagella on the anterior end of the body.

⇒ A small light sensitive eye spot is present.

⇒ They can prepare their own food because they have photosynthetic pigments like chlorophyll. They act like heterotrophs when there is no light, though, by catching other tiny aquatic creatures.

⇒ They are referred regarded as the connecting link between plants and animals since they exhibit both plant and animal-like characteristics, making it difficult to categorize them.

4. Slime moulds

⇒ Chlorophyll does not exist in them.

⇒ Only the plasma membrane encloses them. The spores, however, contain cellulose cell walls.

⇒ They often reside near decomposing vegetation.

⇒ They have a diverse spectrum of coloring.

⇒ They are saprotrophic or phagotrophic feeders.

3 0

1 year ago

Drag each label to the correct location on the diagram.

jeyben [28]

The skeletal muscle, responsible for voluntary contraction is composed of 1) Myofilaments 2) Myofibrilles 3) Muscle fibers 4) Muscle (from the left to the right in the image)

<h3>What is the composition of the skeletal muscle?</h3>

The elements composing the skeletal muscle are,

Myofilaments ⇒ Actine and miosine

Sarcomere ⇒ It is the functional unit with the contractile apparatus. Composed of the Z band, A and I bands, and H zone.

Myofibrilles ⇒ They have the Functional units

Muscle fibers ⇒ Surrounded by endomysium

Fascicle ⇒ Group of fibers surrounded by perimysium.

Muscle ⇒ Group of fascicles surrounded by epimysium.

The sarcomere is the contractile unit in a skeletal muscle. The thick myosin myofilaments are located in the central region of the sarcomere, which corresponds to the A band.

Thin filaments united to the Z lines, extends to the interior of the A band until they reach the border of the H band.

The I band is formed solely of thin actin filaments, belonging to two sarcomeres adjacent to a Z line.

When the muscle contracts, the muscular fiber gets shorter and thicker due to the reduction in length of the sarcomere.

The H line and the I band get shorter.

The Z lines get closer to the A band, meaning that they get closer to each other. The A band keeps constant in length.

This change is produced by movement mechanisms that involve a change in the relative position of actin and myosin filaments.

For a better understanding about muscle contraction, look at the attached files.

From the left to the right,

1) Myofilaments

2) Myofibrilles

3) Muscle fibers

4) Muscle

You can learn more about skeletal muscle structure at

brainly.com/question/11246024

brainly.com/question/12213587

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6 0

2 years ago

DNA is like a 1) _________________ much as the specific sequence of letters on base pairs are like 2) _____________ and 3) _____

djverab [1.8K]

Answer:

DNA is like a ladder, it's structure is double helix much as the specific sequence on letters on base pairs are like single rung along the genetic ladder and sugar phosphate.

Explanation:

DNA or Deoxyribonucleic acids is a genetic material found in humans and other living organisms. It is located in the nucleus and sometimes it is found in the mitondondrial in small amount.

The information in DNA is stored as a code made up of four chemical bases; Adenine (A), Guanine (G) , thymine (T) and cytosine(C).

DNA replicates and make copies of it self. It is formed by based pairs attached to sugar phosphate.

7 0

3 years ago

Which disorder is created as a result of the final chromosomal change that is shown

Nady [450]

Answer:

Robertsonian translocation.

Explanation:

the disorder created as a result of the final chromosomal change that is shown is Robertsonian translocation. Translocation is one of the mutation that happens in chromosomes.

6 0

3 years ago

Read 2 more answers