biologists think that endosymbiosis gave rise to mitochondria before plastids partly because:

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Answer 1
Biologists think that endosymbiosis gave rise to mitochondria before plastids partly because: (All eukaryotes have mitochondria whereas many eukaryotes do not have plastids)

Related Questions

Thyroxine does not act on a specific organ

Answers

Answer:

Thyroxine is a hormone the thyroid gland secretes into the bloodstream. Once in the bloodstream, thyroxine travels to the organs, like the liver and kidneys.

Explanation:

Describe the functions and organization of tissue systems in a seed plant.

Answers

Answer:

tissues is the protect outer covering of plants

Explanation:

Plants consist of many different types of cells that are organized into aggregates called tissues. Tissues are derived from specialized groups of dividing cells called meristems. Meristems are the source of cells and tissues and therefore they are not strictly speaking tissues themselves

Plants are multicellular eukaryotes with organized tissue and specialized organs with specific tasks.

What are the functions and organization of the tissue system in a seed plant?Plants are multicellular eukaryotes, and their tissue systems are made up of many cell types that serve distinct purposes. Meristematic tissue and permanent (or non-meristematic) tissue are the two main forms of plant tissue systems. Meristems, which are areas of plants that experience continuous cell division and expansion, are where the meristematic tissue's cells may be located. Meristematic tissue cells continue to divide and support plant growth despite being either undifferentiated or incompletely differentiated. Permanent tissue is made up of dormant plant cells, which are no longer actively dividing.Secondary tissues can be simple (made up of similar cell types) or complex (composed of different cell types). Dermal tissue is a simple tissue that covers the plant's exterior and regulates gas exchange. One example of a complex tissue is vascular tissue, which is composed of the specialized conducting tissues xylem and phloem.

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The structure is known as the Nucleus

the part of the endocrine system that is responsible for overseeing

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Answer:

Part of the endocrine system that is responsible for overseeing

The pituitary gland is located at the base of the brain beneath the hypothalamus and is no larger than a pea. It is often considered the most important part of the endocrine system because it produces hormones that control many functions of other endocrine glands.

Explanation:

How can change over time account for the diversity of beetles?

Answers

Answer:

Beetle diversity thus appears to have resulted from multiple factors, including low extinction rates over a long evolutionary history, codiversification with angiosperms, and adaptive radiations of specialized herbivorous beetles following convergent horizontal transfers of microbial genes encoding PCWDEs.

Explanation:

here is the two questions pls answer as fast as you can

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I don’t see a question

Answer:

I don't see a question, all i see is a blank page

Explanation:

I need help please :(

Answers

the correct option is :

A. Some energy is lost to the environment as heat, some is used for reproduction, movement and growth of organisms at that level.

only 10 % of energy that the organism get is transferred to the next trophic level.

If humans began hunting seals MORE, what would happen to the population of Penguins and Krill?

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Answer:

the population of penguins and krill will go up

the population would then grow of penguins

the presence of ___________ chemically distinguishes protein from carbohydrate and fat.

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Answer:

Nitrogen

Explanation:

The presence of Nitrogen chemically distinguishes protein from carbohydrate and fat.

I only have 5 minutes!!!!! Help no websites help me ASAP fill in the blank and don’t answer it if you don’t now

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Answer:

i think it's element

Explanation:

What are some ways you think scientists can affect or utilize the genes of organisms?

Answers

Answer:

I'm not quite sure what your looking for

Explanation: scientists can take the genes of one successful crop, animal, etc, and insert that gene into future things so all offspring will be successful. This is called genetically modifying. Another thing scientists can utilize genes for is cloning. There have been ideals of the perfect human for many years and now scientists are trying to alter these genes to have perfect offspring according to your standards.

compare and contrast classical and operant conditioning

Answers

Both are processes that lead to learning. Classical conditioning pairs two stimuli and works with involuntary responses, while operant conditioning pairs behavior, response, and works with voluntary behaviors.

In classical conditioning, the involuntary response is seen, while operant conditioning is based upon the learning experience. An organism will perform more or less based on its experience with operant conditioning.

What are classical conditioning and operant conditioning?

In classical conditioning, the stimulus is given and an involuntary response is observed. The Pavlov experiment on dogs is one example. He gave food to the dog and rang the bell at the same time for some days. After that, he only rang the bell, and the dog salivated without the food. Here, salvation is an involuntary response to the stimulus (bell ringing).

In operant conditioning, animals perform actions based on their experience. Example: A mouse is put in a box with an electric supply and food supply. When the mouse accidentally presses the electric switch, it gets an electric shock. This is negative reinforcement, and the mouse is less likely to perform the same function again. When it pushes the food lever, the food comes from the food box. This is positive reinforcement. The mouse is more likely to perform this.

Hence, in classical conditioning, the involuntary response is seen. Operant conditioning is based on learned experience.

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Somebody help me please

Answers

a. diaphragm

b. stage clips

c. revolving nosepiece

clusters of chlorophyll and accessory pigments are called ________.

Answers

Answer:

Photosystems

Explanation:

In all photosynthetic organisms studied to date, except one class of photosynthetic bacteria, light is captured by clusters of chlorophyll and accessory pigment molecules, which together are called photosystems.

Hope this helps :)

What would happen if bees did not make it back to their hive? What is the evidence?
(No LINK)

Answers

I guess they will find another hive
If the bees are unable to return to the hive the hive would slowly over time begin to collapse. The reasoning for this is because if you have a job let’s say a construction site that has no workers then eventually that construction site will never be completed or maintained the same applies for the hives of bees

the most significant problems for U.S. national parks.

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In 20 years, many of the country's 411 national parks, monuments and historic sites will suffer damage as sea levels rise, wildfires rage, glaciers melt and iconic wildlife, such as grizzly bears in Wyoming and pikas in Colorado's high-altitude tundra face shrinking habitat and scarce food.


Hope this helps you if I am wrong sorry
Have a great day!

pls help 25 pointss plssss


can u pls help me write a little summary about Food Web’s and include

-Trophic Levels
-Food Chains
-Biomass
-Bioaccumulation

Answers

Answer:

Sorry i just need Points

Explanation:

Ill answer thus later HAHAHA

Will give Brainliest within five minutes of answer - Why do we want to explore Mars more than the other planets/moons even though it is not currently habitable (with its temperatures, atmosphere, etc.)? How can it be habitable?

Answers

Answer:

After the Earth, Mars is the most habitable planet in our solar system due to several reasons:

Its soil contains water to extract

It isn’t too cold or too hot

There is enough sunlight to use solar panels

Gravity on Mars is 38% that of our Earth's, which is believed by many to be sufficient for the human body to adapt to

It has an atmosphere (albeit a thin one) that offers protection from cosmic and the Sun's radiation

The day/night rhythm is very similar to ours here on Earth: a Mars day is 24 hours, 39 minutes and 35 seconds

The only other two celestial bodies in orbits near the Earth are our Moon and Venus. There are far fewer vital resources on the Moon, and a Moon day takes a month. It also does not have an atmosphere to form a barrier against radiation. Venus is a veritable purgatory. The average temperature is over 400 degrees, the barometric pressure is that of 900 meters underwater on Earth, and the cherry on top comes in the form of occasional bouts of acid rain. It also has nights that last for 120 days. Humans cannot live on Mars without the help of technology, but compared to Venus it's paradise!

Additional info:

Mars is an obvious target for exploration because it is close by in our Solar System, but there are many more reasons to explore the Red Planet. The scientific reasons for going to Mars can be summarised by the search for life, understanding the surface and the planet’s evolution, and preparing for future human exploration.

Searching for life on Mars

Understanding whether life existed elsewhere in the Universe beyond Earth is a fundamental question of humankind. Mars is an excellent place to investigate this question because it is the most similar planet to Earth in the Solar System. Evidence suggests that Mars was once full of water, warmer and had a thicker atmosphere, offering a potentially habitable environment.

what types of symmetry do enchinoderms have and when do they have them?

Answers

Answer:

Hi hope this is right

Explanation:

Echinoderms have a spiny endoskeleton. They have radial symmetry as adults but bilateral symmetry as larvae. Echinoderms have a unique water vascular system with tube feet. This allows slow but powerful movement.

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Place the rock layers in order from oldest to youngest in the blanks below. Type the letters as they
are shown.

Answers

Answer:

C

Explanation:

The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top. Based on this, layer C is oldest, followed by B and A. So the full sequence of events is as follows: Layer C formed.

Where are the instructions that control a cell's activities found?
A. DNA
B. mitochondria
C. ribosomes​

Answers

Answer:

A. DNA

Explanation:

Nucleus. The nucleus, a substantial organelle that houses the cell's DNA, is referred to as the “command center” of the cell (deoxyribonucleic acid). Thus, option A is correct.

What is the main function of DNA?

The genetic information contained in the DNA is used by the nucleus to regulate all cellular functions, including growth and metabolism.

Today, DNA has three separate purposes: genetic, immunological, and structural, all of which differ greatly from one another and depend in different ways on the bases and the sugar phosphate backbone.

Genetic information is encoded in the nucleotide order along the backbone. Replication, information encoding, mutation/recombination, and gene expression are the four functions that DNA performs.

Therefore, DNA which is found in nucleus control a cellular activity.

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If a star is small, it will likely last___ a large star.

for as long as

longer than

for less time than

Answers

Answer:

Longer then is the answerrrrr

Give an example of 3 detrivores. On what do they feed?

Answers

Answer:

Sea cucumber,Vulture,  and worms

they feed on dead organisms

Explanation:

Answer:

Vultures, worms, and crabs

Explanation:

they feed on dead organisms

PLEASE HELP ASAP I REALLY NEED HELP PLEASEEE 02.08 What's Your Big Idea?
You have previously written the introduction to your compare and contrast article. Now you will write the two body paragraphs to continue your compare and contrast article.
Note: One body paragraph is to compare similar features of both of your two chosen articles, and the other body paragraph is to contrast different features of both of your chosen articles. The body paragraphs are not summaries of each article.

View the grading rubric as you complete your assignment. This is your guide to a super submission.

You have previously written the introduction to your compare and contrast article. Now you will write the two body paragraphs to continue your compare and contrast article.
Be sure to use the information you previously wrote in your Compare and Contrast Organizer.
In your body paragraphs, remember to include:
Topic sentence for each body paragraph that relates to thesis
Support for your topic sentence with facts from your research
Signal phrases to identify ideas that are not your own
One direct quote, correctly punctuated
Transition phrases at the beginning of each paragraph
Technical language to show your understanding of the topic
Body paragraphs that compare and contrast two helpers
Write three or more complete sentences in each paragraph
Write in formal style using the third person point of view.
Use correct grammar, punctuation and spelling.
Add your introduction to the body.
Save your work to your computer or drive.
Submit your work in 02.08 What's Your Big Idea?
If needed, review your chosen articles.

Read the articles.
Article 1-Minutes That Matter
Article 2-Defeating Dragons
Article 3-Food That Fuels

Answers

Answer:

To start off, let's discuss how these two heroes are similar. First, these heroes we are talking about are teens. Yes, you heard it here folks these people are in between the age of 14 - 18. They also both help others. For example, Brittany Bergquist and her brother Robbie take time out of their day to provide more talk time for soldiers. On the other hand, team made up of girls and boys help people that need medical assistance 24 hours a day. But most importantly they both enjoy, love, and are amazed by what they are doing.

thats paragraph one youre going to do paragraph 2 yourself because im still working on paragraph 2

Explanation:

The distinguishable between Food that fuels and minutes that matter is one's to benefit soldiers to help communicate with his family while they fight for our country.

On the other hand is to help keep their families warm during the winter for the parents working to make ends meet.

First similarity of these two are that they both used recycled items to solve their problem within their families and meet the needs in their community.

But don't forget about the smart kids that came up with the idea to recycle their belongings to solve the problem and let nothing go to waste.

Another difference is that the solution to the obstacle affected the families and households different because the circumstances were totally opposite and now a family warm while a solider can call home to his family but all with smiles on their faces.

What is Food?

Food is a substance consisting essentially of protein, carbohydrate, fat, and other nutrients used in the body of an organism to sustain growth and vital processes and to furnish energy.

The absorption and utilization of food by the body is fundamental to nutrition and is facilitated by digestion.

Plants, which convert solar energy to food by photosynthesis, are the primary food source.

Animals that feed on plants often serve as sources of food for other animals.

What is Fuel?

Fuel is a substance that is burned to provide nuclear energy, heat or power.

Materials like coal, wood, oil, or gas can provide heat when burned. Methanol, Gasoline, Diesel, Propane, Natural gas, Hydrogen are types of fuel. Nuclear energy is produced by burning plutonium.

From fuel efficiency or fuel economy, we can measure how long any vehicle could travel, which is the opposite of fuel consumption.

Fuel consumption is the amount of fuel vehicle uses to travel a particular distance.

Fuel efficiency can be measured in kilometers per liter. The efficiency with which the fuel does a conversion of energy is known as fuel efficiency.

To learn more about Food are here

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can someone plzz help me on this question its hard :( and i want to pass

Answers

Answer: A

Explanation:

Your welcome

deposits of coal have been found beneath the ice of Antarctica. But coal only forms from warm swamps. How can coal be found so near the South Pole?

Answers

Deposits of coal have been found beneath the ice of Antarctica. But coal only forms in warm swamps. ... According to Wegener's hypothesis, coal could be found near the South Pole because during the time of Pangaea, the South pole was near the equator causing it to be warm and allowing coal to form.



Hope it helps

Using the information in Model B as a reference. Which of the following from the elephant is directly available to the lion?

Grass

Respiration

Biomass

Waste


I need this answer quick please!

Answers

Answer:

Biomass

Explanation: Grass is not available in its original condition as it's digested.

Respiration doesn't make any sense.

Waste including faecal matter is removed from the organism via urinary and digestive systems.

Biomass is what the lion consumes.

why should we not view lactose intolerance as a disease in adult humans?

Answers

Answer:

Because lactose intolerance isn't a disease, it just mean the individual's stomach isn't able to digest the lactose found in milk.

Explanation:

During meiosis, homologous chromosomes can exchange DNA in a process as shown in the diagram
below known as

Answers

The answer is: crossing over

A type of circuit that has only one path is called a —

Group of answer choices

series circuit

parallel circuit

open circuit

closed circuit

Answers

The answer is series circuit.

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