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svetoff [14.1K]
3 years ago
6

I know someeone know this help us out

Biology
2 answers:
wolverine [178]3 years ago
8 0

Answer:

1st D

2nd E

3rd C

4th A

5th B

ycow [4]3 years ago
6 0
The answers you need are:
D
E
C
A
B
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This gene sequence undergoes transcription (i.e., is copied) into ____________ by rna polymerase and other proteins. this occurs
ANEK [815]

The answer is mRNA (messenger-RNA). In most eukaryotes, transcription occurs by firstly creating a primary transcript.  This primary transcript is processed into a pre-mRNA that later becomes a mRNA by removing introns. Processing of the RNA also includes polyadenylation and 5’ capping.






3 0
3 years ago
describe and explain the adaptations of sperm and ovum that enables fertilisation and early development of the embryo to occur​
Mekhanik [1.2K]

The adaptations of the sperm and egg that allow fertilization to take place, and copulation occurs for the sperm to be deposited. These sperm penetrate the cervix and travel to the fallopian tube. There, they must find an oocyte, which is released in the process of ovulation.

<h3>What is fertilization and embryo development?</h3>

In the first weeks after fertilization, the zygote makes many changes and develops rapidly. The first eight weeks of development is known as the organogenic period and is the embryonic stage of development. This period is a crucial phase of development for the embryo's organs.

With this information, we can conclude that The first three days of embryonic development occur in the fallopian tube as the embryo moves from the ovary to the uterus. Cell division continues and forms a hollow ball of cells (the blastocyst). Six days after fertilization, the embryo begins implantation into the lining of the uterus.

Learn more about  embryonic in brainly.com/question/14560716

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4 0
2 years ago
Fr.ee points for the hoomies <br><br><br> also plz answer my question abt stem cells ;,)
Hitman42 [59]

Answer:

STEM CELLS

They serve as a repair system for the body.

7 0
3 years ago
Read 2 more answers
How could concentrating human populations in cities help to conserve agricultural and recreational lands
Levart [38]
<span>The concentration of many people into the small area, for example, A city lowers the overall footprint of the population in the region.

 Any pollution which results from people in a city can be isolated and treated more easily even than when people are being dispersed widely.
 Many cities outlined suburbs to have a lower concentration of people because it can complicate public transport and provision of services. </span>
3 0
3 years ago
During a meal, the __________ nervous system stimulates digestive activity and slows heart rate. during exercise, the __________
Licemer1 [7]

Answer:

During a meal, the parasympathetic nervous system stimulates digestive activity and slows heart rate. During exercise, the sympathetic nervous system inhibits digestion and increases heart rate.

<h2>What roles do the sympathetic and parasympathetic nervous systems play in the performance of an individual?</h2>

The two components of the autonomic nervous system are the sympathetic and parasympathetic nervous systems.

They are not in our control and acting against their will. The activities of the heart, lungs, digestive system, urinary system, perspiration, salivation, and sexual function are all under their control.

The thoracic and lumbar spine cords are the genesis of the sympathetic nervous system.

(Lumbar outflow from the thorax)

The cranial nerves of the brain and the sacral region of the spinal cord give rise to the parasympathetic nervous system.

The cranio-sacral outflow

On the effectors that they act on, they have opposing effects. The overall overview of how they work is as follows:

  • The sympathetic nervous system is what causes the "fight, flight, or fear" response. It often activates in emergency circumstances, and action is taken right away. It is heavily weighted toward the body's emergency and survival reactions to a dangerous stimuli. During sympathetic stimulation, there occurs dilation of the pupils, a rise in heart rate, dilation of the bronchi, dilation of the sweat glands, etc. It is accountable for both the retention phase of pee in the bladder and the erection phase of sexual stimulation.
  • The parasympathetic nervous system is in charge of the "rest and digest" phase. It helps with digestion and the relaxation response and is primarily engaged during resting and pleasure moods. The pupils close, the pulse rate and breathing slow down, digestive juices start to secrete, and bowel movement is improved. It is in charge of ejaculation during sexual activity and aids in urination by contracting the bladder.

As a result, it is clear that the sympathetic and parasympathetic nervous systems are essential to human existence. Even while the autonomic system cannot be consciously controlled, some people who practice yoga and meditation have developed the skills necessary to gradually regulate some bodily processes, including heart rate, body temperature, and digestive processes.

7 0
1 year ago
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