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gulaghasi [49]
3 years ago
15

Science help plz! Giving brainlist :D

Biology
1 answer:
KIM [24]3 years ago
7 0
17. The SI unit for force is N.

18. When an Unbalanced force acts upon and object, the object will change speed and/or direction of motion.

19. Average speed is the speed averaged over a span of time. Instantaneous speed would be the speed at any given instance during that span of time.

20. Acceleration= (final velocity - initial velocity) / time

Final velocity= 0 m/s
Initial velocity= 25 m/s
Time = 40 sec.

So, acceleration (0 - 25) m/s / 40 sec.

Acceleration = -0.625 m/s^2
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the nutrients in foods perform functions in the body, what are they and briefly describe the nutrients involved in these functio
Ludmilka [50]

Answer:

The human body needs a list of macromolecules and micromolecules for performing day to day functions.

The essential macronutrients that the body requires are:

Carbohydrates: Carbohydrates are required by the cells in the body to carry out normal day to day functions. Energy is provided in the form of calories by the carbohydrates.

Proteins: Proteins are essential nutrients which are required for growth as well as better functioning of the immune cells of the body.

Fats and oils: These are needed for providing insulation to the body and to store energy.

Fibres: These are a mixture of carbohydrates.

Water: Almost every activity of the body requires water.

The essential micronutrients that the body requires are:

Vitamins: Vitamins are a group of substances which are needed by the body to function normally.

Minerals: Mineral are needed to ensure that tissues are working correctly.

7 0
3 years ago
In which phase do homologous chromosomes migrate to towards the metaphase phase?
shtirl [24]
C Chromosomes break at centromeres,and sister chromatids move to opposite ends of the cell.
4 0
3 years ago
The molecules DNA and RNA are both nucleic acids, but they differ in structure and function.
valentinak56 [21]

Part B: AUG-GCG-AAC-UGU

Part C:It will change but the only one the will change is the A and U.

5 0
3 years ago
Protists are very diverse, and many different classification schemes have been used to define relationships between the protists
andrey2020 [161]

Answer:

D. heterotrophic by ingestion, pseudopods

Explanation:

Protists are generally classified  as all eukaryotic organisms that are not plants, animals or fungi. Example is amoeba, paramecium etc.They may be unicellular or multi cellular in nature.Most exist in colonies.

Their mode of nutrition can be photosynthetic or hetrotrophic. Hetrotrophic  protists   can be divided into  phagotrophs and osmotrops/saprotrophs. The phagotrophs  makes use of the cell body to engulf the food materials as  in amoeba ,carry out extracellular digestion before swallowing it.

Osmotrops absorbed dissolved food from surrounding liquid environments directly. (Some photosynthetic protists can also be heterotrophic.

Amoeboid movement is the mode of locomotion of protists and some  other eukaryotes. It involved the protrusion of cytoplasm, which exert pressure on the cell membrane to form pseudopodia and  the posterioly  evolved  <u>Uropods. </u>

<u />

<u>  </u>

<u>Sol-gel theory has been proposed to expalin this movements, The ectopalsm of amoeba is gelly-like , while the endiplams is less viscpus   and said to be sol. The interchange of the cytoplasmic fluis between the endo-and ecto plasm gives the SOL-GEL propulsion of the protopalms for the amoebic moveemnts .</u>

<u />

<u>The false feet(psuedopodium) drags the amoeba  along in the direction of the flow of the cytoplasm.</u>

Therefore option D is  the right option

4 0
3 years ago
How do bacteria protect themselves against viruses?
777dan777 [17]

These viruses – known as phages – attach to the surface of bacterial cells, inject their genetic material, and use the cells' enzymes to multiply while destroying their hosts. To defend against a phage attack, bacteria have evolved a variety of immune systems

8 0
3 years ago
Read 2 more answers
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