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kompoz [17]
3 years ago
5

Whats is friction?????

Biology
1 answer:
fenix001 [56]3 years ago
5 0

Answer:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

Explanation:

Think of this as two magnets of opposite pushing against each other. Or a bowling ball running into the bowling pins.

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What type of cells produce gametes,sperm, and egg cell
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Answer:

They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. These reproductive cells are produced through a type of cell division called meiosis.

Explanation:

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1. Electric current decreases as more<br> devices are added to a(n) ___ circuit<br> ,
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1. Electric current decreases as more

devices are added to a(n) _a_ circuit

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If you were a scientist researching the eyesight of these Thai fishermen, what are four scientific questions you would ask to gu
adelina 88 [10]

Explanation:

Eyesight is one precious gift which we get during our birth. The vision is the most important aspect of eyes.

The most important question which I feel to ask are listed below:

1. Is there any solution to rectify the birth defect in the eye sight?

2. Is transplantation possible on these Thai fishermen?

3. Is it possible to fix the genetic disorder pertaining to eyesight?

4. What measures needs to be followed to maintain the eyesight or increase the lifespan of good eyesight?

6 0
3 years ago
Each of the tissues listed below has a specialized function that is linked closely to the structures found within the tissue's c
ivann1987 [24]

Answer:

Insect flight muscles [Mitochondria]

Cells lining the respiratory passages [Cilia]

White blood cells that engulf and destroy invading bacteria [Lysosomes]

Leaf cells of cacti [Chloroplasts]

Goblet cells lining the intestinal tract that secrete mucus [Golgi apparatus]

Pancreatic cells that are responsible for creating several digestive enzymes (proteins) [Ribosomes]

Explanation:

Mitochondria are cell organelles whose main function is energy generation during respiration. They generate energy in the form of ATP which is then used by the cells and tissues for various metabolic function. Mitochondria are abundant in cells whose energy requirements are high such as muscle cells. Therefore, insects flight muscles will have an abundance of mitochondria.

Cilia are finger-like projections on respiratory surfaces whose sweep-like movements help to move particles and fluids out of the airways. In the trachea, the cilia trap particles like bacteria and viruses and then move these trapped particles along with mucus up to the pharynx where it is either coughed out or swallowed into gastrointestinal tract. Therefore, respiratory surfaces like the trachea will have an abundance of cilia.

Lysosome are cell organelles which function to destroy and digest foreign and cellular proteins in the cell. They have an abundance of proteolytic enzymes which degrade proteins at acidic pH. Therefore, white blood cells that engulf and destroy invading bacteria will have an abundance of ysosomes.

Chloroplasts are plant cells organelles which are the sites for photosynthesis. It is abundant in the leaves of plants where photosynthesis mainly take place. Therefore, leaf cells of cacti will have an abundance of chloroplasts.

Golgi apparatus is a cell organelle that helps process and package proteins and lipid molecules, especially those that are to be secreted outside the cell, packaging them into vessicles. They also make and secrete mucus. Therefore, goblet cells lining the intestinal tract that secrete mucus will have an abundance of Golgi apparatus.

Ribosomes are cell organelles whose main function is to synthesize proteins, both for intracellular and extracellular purposes. Proteins such as hormones, enzymes etc, are synthesized by the ribosomes. Therefore, pancreatic cells that are responsible for creating several digestive enzymes (proteins) will have an abundance of ribosomes.

4 0
3 years ago
Eukaryotic cells that are destined to divide progress through G1, S, G2, and M phases, which are collectively known as the
julia-pushkina [17]

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The eukariotic cell cycle

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2 years ago
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