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dsp73
2 years ago
12

What are the steps leading to a cell becoming cancerous

Biology
1 answer:
Rufina [12.5K]2 years ago
3 0

Answer:

Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.

Explanation:

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Which of these resources are renewable? Check all that apply.
aksik [14]

Answer:

Wind

Tides

Geothermal energy

Explanation:

1. Wind does not contaminate and is inexhaustible.

2. Tides are due to gravitational interaction with the Moon and Sun and the Earth's rotation, so it is classified as inexhaustible.

3. Geothermal energy is renewable because heat is continuously being produced inside the Earth, at the core.

5 0
3 years ago
Read 2 more answers
WILL GIVE THE BRAINLIEST<br> List at least two predator adaptations.
PolarNik [594]

Answer:

Predators come in all different types, so you could name lots of adaptations. Birds of prey, for example, have sharp talons and beaks. Wolves and panthers have sharp teeth and claws.

Explanation:

Thats the best I can do since i need to finish my test;GOOD LUCK!!!

7 0
3 years ago
Determine the correct order for the transmission of a signal through the nervous system.
Vinvika [58]

Answer:

A. I, IV, II, III, I

Explanation:

Living system can be defined as the internal systems of organisms and how materials circulate within organisms.

Generally, these living systems are self-organized life forms and are known to be very much interactive with their surroundings or environment. Also, living systems are dependent on the flow of information, matter and energy at various levels.

Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.

Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc., which are typically used for carrying out various bodily functions such as respiration, metabolism, digestion, etc.

A sensory system can be defined as components of the central nervous system (CNS) which comprises of the brain, neural tissues or pathways and sensory neurons responsible for sensory functions, perception and processing sensory informations such as sound, light, heat, etc.

Basically, the central nervous system (CNS) interprete the neural signals that are generated from stimuli that are detected by the sensory system. The five (5) main sense organs in the sensory system are: skin, tongue, ears, nose and the eyes.

Generally, the nervous system found in living organisms such as humans, comprises of two (2) major components or systems; a central nervous system (CNS) and a peripheral nervous system (PNS).

The correct sequential order for the transmission of a signal through the nervous system;

1. Nerve impulse is triggered.

2. Synaptic vesicles release neurotransmitters.

3. Neurotransmitters diffuse across synaptic cleft.

4. Receptors bind neurotransmitters.

5. The whole process is started all over again when the nerve impulse is triggered.

7 0
3 years ago
Read 2 more answers
What is the purpose of controlling the environment when testing a hypothesis?
notsponge [240]
It allows the scientist to determine the effect of the changed variable , it also allows samples and organisms to be tested under comfortable conditions
7 0
3 years ago
Read 2 more answers
Explain how the nervous system produces graded contractions of whole muscles
telo118 [61]
(1) The varying number of muscle fibers that contract
<span>In most muscles, the number of muscle fibers in different motor units ranges from a few to hundreds. The nervous system can thus regulate the strength of contraction in a muscle by determining how many motor units are activated at a given instant and by selecting large or small motor unties to activate. </span>
some muscles are almost always partially contracted. In such muscles, the nervous system my alternate activation among the motor units, reducing the length of time any one set of fibers is contracted. Prolonged contraction can result in muscle fatigue due to the depletion of ATP and dissipation of ion gradients required for normal electrical signals.ing.
<span>(2) varying the rate at which muscle fibers are stimulated </span>
<span>single action potential produces a twitch lasting about 100 msec or less. If a second action potential arrives before the muscle fiber has completely relaxed, the two twitches add together, resulting in greater tension. Further summation occurs as the rate of stimulation increases. When the rate is so high that the muscle fiber cannot relax at all between stimuli, the twitches fuse into one smooth, sustained contraction called tetanus.</span>
4 0
3 years ago
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