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riadik2000 [5.3K]
3 years ago
11

Does cell which has chloroplast have to have mitochondria?

Biology
1 answer:
Musya8 [376]3 years ago
5 0

Explanation:

A chloroplast is a type of organelle known as a plastid, characterized by its two membranes and a high concentration of chlorophyll. ... Chloroplasts, like mitochondria, contain their own DNA, which is thought to be inherited from their ancestor—a photosynthetic cyanobacterium that was engulfed by an early eukaryotic cell.

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Siamese cats have pale, cream-colored bodies with dark brown fur on their extremities (their ears, face, legs, and tail). Siames
svet-max [94.6K]

Answer:

Melanin

Explanation:

Some races that are genetically programmed in such a way that the color changes according to the ambient temperature, as is the case of the Siamese cat.

Siamese cats has a gene that produces melanin (gives hair color) depending on body temperature.

This gene stops painting color when the average temperature of cats is exceeded. This absence of color (that is, white cat) causes several curiosities to occur:

1) Siamese cats that are subjected to higher temperatures, for example in summer, can develop a partial albinism.

2) Siamese babies are usually born very white, because in the mother's womb the temperature is warm. As they come in contact with the outside, the gene begins to color their fur.

3) Cat's body is colder around the ears, legs and tail. For that reason they are usually the most colored areas of the Siamese.

4 0
3 years ago
Provide brief overview of the nervous system and its role in the maintenance of homeostasis.
Alona [7]
Explanation:

The nervous system has two major anatomical subdivisions:

Central Nervous System: Composed of the brain (inside the skull) and the spinal cord (inside the spinal column).

The brain and spinal cord are responsible for processing and integrating the various sources of information to allow us to develop a response. Therefore, the main function of the somatic nervous system is to connect the Central Nervous System with the organs and skeletal muscle to carry out our daily functions.

Peripheral nervous system: it is everything that is outside the bone cavity and is formed by the nerves and nerve ganglia that extend outside the central nervous system.

The peripheral nervous system has a somatic component, which is associated with the voluntary control of body movements through the use of skeletal muscles. This means that it is responsible for all the functions that we are aware of, including the movement of our arms, legs, and other parts of our body.

On the other hand, the autonomic nervous system is a component of the peripheral nervous system that regulates involuntary physiological processes. These processes include heart rate, blood pressure, breathing, digestion, and sexual arousal. The autonomic nervous system contains three divisions: sympathetic, parasympathetic, and enteric.

Due to the above relationships and anatomical subdivisions we can say that the nervous system is responsible for regulating and maintaining homeostasis. In fact, through its receptors, neurotransmitters, nervous inputs, and outputs, the nervous system keeps us in touch with our environment, both external and internal.

We can conclude that the correct answer is:

Answer:

Overview of the nervous system:

The nervous system has two major anatomical subdivisions:

Central Nervous System: Composed of the brain (inside the skull) and the spinal cord (inside the spinal column).

The brain and spinal cord are responsible for processing and integrating the various sources of information to allow us to develop a response. Therefore, the main function of the somatic nervous system is to connect the Central Nervous System with the organs and skeletal muscle to carry out our daily functions.

Peripheral nervous system: it is everything that is outside the bone cavity and is formed by the nerves and nerve ganglia that extend outside the central nervous system.

The peripheral nervous system has a somatic component, which is associated with the voluntary control of body movements through the use of skeletal muscles. This means that it is responsible for all the functions that we are aware of, including the movement of our arms, legs, and other parts of our body.

On the other hand, the autonomic nervous system is a component of the peripheral nervous system that regulates involuntary physiological processes. These processes include heart rate, blood pressure, breathing, digestion, and sexual arousal. The autonomic nervous system contains three divisions: sympathetic, parasympathetic, and enteric.

Role in the maintenance of homeostasis:

Due to the above relationships and anatomical subdivisions we can say that the nervous system is responsible for regulating and maintaining homeostasis. In fact, through its receptors, neurotransmitters, nervous inputs, and outputs, the nervous system keeps us in touch with our environment, both external and internal.

6 0
1 year ago
Which of the following is true of interphase
Bond [772]
DNA replication occurs during this phase
8 0
4 years ago
Which factor would increase an area's carrying capacity for prairie dogs
Tasya [4]

The correct answer is option B, that is, increased availability of food.  

The carrying capacity of a biological species in surrounding refers to the majority of the size of the population of the species, which the environment can maintain indeterminately, given the habitat, food, water, and other essential necessities in the environment.  

In terms of population biology, carrying capacity is illustrated as the maximum load that can be handled by the environment. Thus, in the given case, the carrying capacity of the prairie dogs in an area gets increased with the increase in the availability of food.  


7 0
3 years ago
Read 2 more answers
What are the possible offspring outcomes if Parent 1, Tt, crosses with Parent 2, tt?
liq [111]

The possible outcomes are Tt and tt.

3 0
3 years ago
Read 2 more answers
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