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miskamm [114]
3 years ago
11

WHY DO SOME PEOPLE HAVE BROWN HAIR?

Biology
2 answers:
ddd [48]3 years ago
3 0
Melanin is a pigment found in your skin and hair<span> cells that gives each its color. It does seem weird that the sun bleaches our </span>hair<span> and darkens our skin. This mostly has to do with </span>hair<span> being dead and skin being alive. the sun bleaches and destroys the melanin in your </span>hair<span> giving you lighter </span><span>hair</span>
faust18 [17]3 years ago
3 0
Genes/DNA

So if your Dad and Brown hair but your Mom has blonde your mostly likely going  to have brown hair because you get most of your Genes from your Dad.
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Though plants, fungi, and prokaryotes all have cell walls, we place them in different taxa. Which of these observations comes cl
PtichkaEL [24]

Answer:

Due to other differences.

Explanation:

The plants, fungi, and prokaryotes all have cell walls, we place them in different taxa because of the other differences such as mobility, mode of nutrition etc. Plants and fungi are not mobile means can not move from one place to another whereas prokaryotes are mobile. Fungi and prokaryotes are heterotrophs means that feed on other organism whereas plants are autotrophs means make their own food. There is also difference in their cell wall i.e. the cell of plants is composed of cellulose, the cell wall of prokaryotes especially bacteria is composed of peptidoglycans and the cell wall of fungi is composed of chitin.

7 0
3 years ago
A gardener notices that some of her green plants are experiencing the
eduard

Answer:

B. The plants will make fewer nutrients because of chlorophyll loss.

Explanation:

The surface of the leaf is lined with chloroplasts.

Since the leaf sizes have been reduced, chloroplasts have followed. Thus, there are less chlorophyll pigments, indicating less chances of photosynthesis, meaning fewer nutrients made.

3 0
4 years ago
Read 2 more answers
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
Plants found in the tundra have all but one of the following features. You would not expect to see tundra plants to have
Debora [2.8K]
Well, it seems like a multiple choice question and you didn't provide answers so I took the liberty of looking it up for you. The answer is "Large Evergreen leaves". Hope this helps
5 0
4 years ago
What is the cell nucleus?
m_a_m_a [10]

Answer:

The nucleus in a cell is like a brain in a human. It is the power house. The nucleus tells everything in the cell what to do and when to do it.

Explanation:

3 0
3 years ago
Read 2 more answers
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