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timurjin [86]
3 years ago
5

The part of the cell that is like your brain and gives instructions to the cell is

Biology
2 answers:
Nadya [2.5K]3 years ago
7 0
I think is nucleus

I hope it helps
rewona [7]3 years ago
4 0

Answer:

Within the cell body is a nucleus (2), which controls the cell's activities and contains the cell's genetic material. The axon looks like a long tail and transmits messages from the cell

Explanation:

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Fiesta28 [93]
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The cell theory was continuously improved over the course of many years. Which scientific advancement directly led to this impro
Whitepunk [10]
<span>When the microscope was invented, it helped the cell theory. This invention allowed scientists to see that everything was made up of cells and see what cells do. They needed this invention in order to see that cells existed and study them more in depth.</span>
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3 years ago
A, B, C, D and E are pathogens of different diseases for human beings. The route of entry of pathogens in human body is differen
Goryan [66]

Answer:

Microorganisms which causes diseases is known as pathogen.

Explanation:

<u>PATHOGEN -:</u> Pathogens are agents that live in a host and are responsible for causing infections or diseases in that host, such as a human being. Microorganisms such as bacteria , viruses , fungi or protozoa, or other organisms such as parasites, worms and even contagious proteins such as prions, may be pathogens.

<u>Viruses:</u> Viruses are micro-organisms that are composed of nucleic acid and covered by a protein sheet. A lipid (fatty) outer layer is also present in some viruses. Enveloped viruses are called these. Non-enveloped viruses are considered those that do not have this lipid outer layer. Only inside their host's living cells are viruses able to replicate.<u> EXAMPLE -:</u>  Influenza (influenza A and B viruses) and the common cold (rhinovirus) are examples of infections caused by viruses.

<u>Bacteria: </u>These are microorganisms which have a nucleus containing DNA surrounded by a cell wall or membrane. Among bacteria, the composition of the cell wall differs. If they are able to access food and nutrients, they have a more complex structure than viruses and can multiply beyond the host.<u> EXAMPLE -: </u> Foodborne diseases can be caused by bacteria such as Salmonella enterica and Escherichia coli, while Staphylococcus aureus can cause skin infections.

<u>Fungi:</u> Fungi are single-celled or multicelled species that can live outside a host. They consume food and nutrients created after digestive enzymes have been secreted into their atmosphere. <u>example-: </u> The foot of the athlete (Trichophyton mentagrophytes) and yeast infections (Candida albicans) are examples of infections caused by fungi.

<u>Prions:</u> These are infectious agents made up entirely of proteins and capable of transferring to other prion proteins their infectious properties.<u> EXAMPLE -: </u>Extreme infectious diseases such as bovine spongiform encephalopathy (mad cow disease) and variant Creutzfeldt-Jakob disease (vCJD) can be caused by prions.

<u>Protozoa: </u>Protozoa are single-celled organisms that display habits that are similar to animals, such as the ability to travel through water, and are capable of harvesting other microorganisms. They are able to live outside the human host, but when they enter the human host and spread, causing infections and diseases, they may also be parasitic in nature. <u> EXAMPLE -: </u>Malaria and giardia include common infections

  • <u>Yes , pathogen enter into the body directly -:</u> Direct contact infections spread when, through direct physical contact with blood or body fluids, disease-causing microorganisms move from the infected person to the healthy person. Touching, kissing, sexual contact, contact with oral secretions, or contact with bodily lesions are examples of direct contact.
  • <u>INCUBATION PERIOD OF A PATHOGEN -</u>:The period of incubation is the interval between exposure to a pathogenic organism, a drug, or radiation, and when the first signs and symptoms are evident.
5 0
3 years ago
Muscles that move the eyeball have ________ fibers.
ozzi

Muscles which are responsible for the movement of the eyeball have fast fibers. Thus, the correct option is A.

<h3>What are fast muscle fibers?</h3>

Fast-twitch muscle fibers are the muscle fibers which provide bigger and more powerful forces, however for shorter durations and fatigue quickly. They are more anaerobic with less blood supply, and hence are sometimes also referred to as white fibers or type II fibers.

Fast-twitch muscle fibers are activated by the high intensity movements which are sustained in short bursts. Examples of movements include sprints, burpees, and quick lateral movements.

Therefore, the correct option is A.

Learn more about Eyeball here:

brainly.com/question/10945999

#SPJ1

Your question is incomplete, most probably the complete question is:

Muscles that move the eyeball have ________ fibers.

A) fast

B) slow

C) intermediate

D) circular

E) All of the answers are correct.

4 0
11 months ago
Which of these characteristics is shared by algae and seed plants? Which of these characteristics is shared by algae and seed pl
Tomtit [17]

Answer:

the correct answer is: chloroplasts

Explanation:

Chloroplasts are the cellular organelles that in photosynthetic eukaryotic organisms take care of photosynthesis.

The characteristic shared by both algae and seed plants is the presence of chloroplasts. Algae and seed plants both have chloroplasts.

5 0
3 years ago
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