Describe Lynn Margulis' three observations (evidence) which support the endosymbiotic
theory.

Answers

Answer 1
There is quite a lot, but the fact that both mitochondria and chloroplasts have their own circular DNAis what I would call "key" evidence. That is, these organelles are not "manufactured" by the cell (i.e., there are no "genes for mitochondria" in eukaryote genomes): like their ancestral bacteria, they reproduce by binary fission.

4




Related questions (More answers below)

Related Questions

Which is the best explanation for how earthquakes cause tsunamis?.

Answers

Answer:

Tsunamis are caused by violent seafloor movement associated with earthquakes, landslides, lava entering the sea, seamount collapse, or meteorite impact. The most common cause is earthquakes. See the percentages on the right for the geological events that cause tsunamis. Note that 72% of tsunamis are generated by earthquakes. A disturbance that displaces a large water mass from its equilibrium position can cause a tsunami.

Explanation: Hope this helps :]

Make a claim about natural selection

Answers

Answer:

Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others

Explanation:

With your group, list at least three possible uses and/or products of the energy absorbed by the oak leaves that did not contribute to the production of biomass

Answers

Answer:

heat loss, energy for cellular process: transpiration, other forms of water, oxygen, carbon dioxide loss

Explanation:

The energy received by the Oak leaves which did not contribute to the synthesis of biomass may be used for or produced as heat loss, energy for cellular processes such as transpiration, other forms of water, oxygen, or carbon dioxide loss.

What is Biomass?

The material from previously living organisms known as biomass is utilised to produce bioenergy. Examples include wood, wood byproducts, energy crops, agricultural waste, and organic waste from commercial and residential sources. The main biomass energy source nowadays is wood and wood waste.

Renewable organic material from plants and animals is known as biomass. Up until the middle of the 1800s, biomass accounted for the majority of the entire yearly U.S. energy consumption. Biomass is a popular fuel in many nations, particularly for heating and cooking in underdeveloped nations.

Thus, the energy received by the Oak leaves which did not contribute to the synthesis of biomass may be used for or produced as heat loss, energy for cellular processes such as transpiration, other forms of water, oxygen, or carbon dioxide loss.

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The most abundant high-energy compound in cells is.

Answers

Answer:

Adenosine triphosphate

Explanation:

Which cell wall is the furthest form the plasma membrane in plants

Answers

Answer:

Below

Explanation:

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Questions & Answers

CBSE

Biology

Grade 11

Cell wall

Answer

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Outermost layer of the cell wall is

(A)Plasmalemma

(B)Secondary wall

(C)Middle lamella

(D)Primary wall

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Hint: The wall which is present at the outermost of the cell wall acts as a glue between the different cells. . The secondary wall is not present in every cell, it is present in few cells that alter the growth of the primary wall.

Complete answer:

A cell wall is an outer structural layer present in only some types of cells, just outside the cell membrane. It is usually tough, flexible, and sometimes rigid. The cell wall is mostly composed of two layers and sometimes three layers too. The layers of the Cell wall are as follows-

- The primary cell wall is generally a flexible thin, and an extensible layer formed while the cell is growing i.e not fully developed. It is usually made up of cellulose and it is often permeable too.

-The middle lamella, a layer rich in pectins. It is the outermost layer that forms the interface between adjacent plant cells and glues them together.

-The secondary cell wall, if present, is a thick layer formed inside the primary cell wall after the cell is mature. it's not found in all cell types.

Additional Information: The cell wall is majorly composed of the cellulose microfibrils that are linked via hemicellulosic tethers to form the cellulose-hemicellulose network, which is embedded in the pectin matrix. The most common hemicellulose present in the primary cell wall is xyloglucan.

The outer part of the primary cell wall of the plant epidermis is mostly covered with the cutin and wax, forming a permeability barrier known as the plant cuticle.

Secondary cell walls contain a wide range of additional compounds that helps to enhance and modify their mechanical properties and permeability. The major polymers that make up wood (largely secondary cell walls) include cellulose, 35-50% .xylan, 20-35%, a type of hemicellulose, and lignin, 10-25%.

The cell wall which is the farthest from the plasma membrane in plants is the primary cell wall.

What do you mean by Cell wall?

A Cell wall may be defined as a specialized form of the extracellular matrix that surrounds every cell of a plant. It is made up of cellulose.

The primary cell wall is the outermost cell wall in the plants, while the secondary cell wall is the innermost cell wall in the plant cell.

The secondary cell wall is located near the plasma membrane, while the primary cell wall is located farthest from the plasma membrane.

Therefore, the cell wall which is the farthest from the plasma membrane in plants is the primary cell wall.

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Are there multiple of one organelle in a cheetah cell?
Need an answer QUICK!!!

Answers

Answer:

yes

Explanation:

they have multiple

Answer:

Yes

Explanation:

Yes

Yes

Yes

YES!!!!

Which is a correct observation based on the photo shown below?

A bird with green, yellow, black, and white feathers is shown. It has a long narrow beak that is longer than the length of its head.
The bird’s coloring indicates that it lives in trees with green and yellow leaves.
The bird has a narrow beak that is longer than the length of its head.
The bird probably uses its long beak to reach the nectar inside flowers.
The bird must inhabit a cold climate since there is ice on the branches.

Answers

Answer:

The bird has a narrow beak that is longer than the length of its head.

Explanation:

-The beak is long and thin, which helps it dip into the flowers to sip nectar (a sugary fluid the hummingbird uses for food).

-This bird (Hummingbird) have a long, narrow beak that allows it to reach the nectar from brightly colored, tubular flowers. It also feeds on insects and have a flexible lower beak that allows them to grab insects from the air during flight.

hope that helps :)

Answer:

The bird has a narrow beak that is longer than the length of its head

Explanation:

-The beak is long and thin, which helps it dip into the flowers to sip nectar (a sugary fluid the hummingbird uses for food).

-This bird (Hummingbird) have a long, narrow beak that allows it to reach the nectar from brightly colored, tubular flowers. It also feeds on insects and have a flexible lower beak that allows them to grab insects from the air during flight.

hope that helps :)


There are how many types of nitrogenous bases?

Answers

Answer:

4

Explanation:

There are 4 nitrogenous bases and they are Adenine, Thymine, Cytosine and Guanine (in RNA, Thymine is replaced by Uracil)

Answer:

Four different types of nitrogenous bases are found in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G).

Explanation:

DNA is a polynucleotide. Each nucleotide is made up of deoxyribose sugar, a phosphate group and nitrogenous base. In DNA, there are four main kinds of nitrogenous bases. Adenine (A), guanine (G), thymine (T), and cytosine (C) are the four bases of DNA (C). Purine bases are adenine and guanine, whereas pyrimidine bases are thymine and cytosine. Base pairing occurs between complementary bases on two strands of double-stranded DNA. By two and three hydrogen bonds, A and G link with T and C, respectively. In RNA, uracil is present instead of thymine.

Which female golfer was the first to play against men in a pga tour event?.

Answers

Answer:

Babe Didrikson Zaharias

Explanation:

Babe Didrikson Zaharias was the first woman to play in a PGA Tour event. While there is no rule against women playing in PGA Tour events, only a few have attempted the feat and, as of 2012, no female golfer has succeeded in finishing a men's tour event.

If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was not intoxicated or the driver was intoxicated

Answers

The probabilty of an event is always fraction and lies somewhere between 0 and 1. The probability of not being intoxicated is 0.8841.

What is probability?

Probability is the chance that an event will occur. The probabilty of an event is always fraction and lies somewhere between 0 and 1. A probability of zero means that an event can never occur while a probability of 1 implies that the event must surely occur.

The total number of drivers= 41 + 72 + 215 + 647 = 975

Number that wasn't intoxicated = 215 + 647 = 862

probability of not being intoxicated= 862/975 = 0.8841

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The scar left on the seed coat after the seed has separated from its stalk is called the: a. Micropyle. B. Funiculus. C. Hilum. D. Suspensor. E. Integument

Answers

The scar left on the seed coat after the seed has separated from its stalk is called the: Hilum.

What connects the left and right hemispheres of the brain?.

Answers

Answer:

The two hemispheres are connected by a thick band of nerve fibres called the corpus callosum.

Explanation:

show your work. This is a science question .

Answers

Since the formation of the San Andreas Fault system 25-30 million years ago, the juxtaposition of the Pacific and North American plates has formed many faults in California that accommodate lateral motion between the plates.

hope this helps

Whould we want the human curve to look like the 1st bacteria population

Answers

Answer: No, because the bacterial population plummets once their resources are exhausted

SOMEONE PLS HELP ME!!!!

Answers

Explanation:

sunlight A suntranspiration E soil

Select one method of reproduction, s3xual or as3xual, and explain one advantage and one disadvantage of this method of reproduction.

Answers

Answer:

s3xual

Explanation:

When s3xually reproducing the offspring end up having traits from both their parents, thus creating biodiversity.

Biodiversity: biodiversity is when organisms in a species are slightly different from one another.

During digestion of triglycerides, fatty acids enter the intestinal mucosa by diffusion; then, they are then re-synthesized into triglycerides that enter the lymph as chylomicrons. Are these two statements true or false?.

Answers

Both of those statements are true.

What are the three events of Photosynthesis?​

Answers

Answer:

(i) Absorption of light energy by chlorophyll.

(ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.

(iii) Reduction of carbon dioxide to carbohydrates.

I expect that this might help you out.

Explanation: The process of Photosynthesis is simple.

The three events that take place in "Photosynthesis", are:

1. Absorption of light energy by chlorophyll.

2. Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.

3. Reduction of carbon dioxide to carbohydrates.

Definition of Photosynthesis: The process by which plants and other organisms use sunlight to synthesize foods from carbon dioxide and water.

                         Have a wonderful day or night!

As a result of the general stress response, blood concentrations of epinephrine.

Answers

Answer:

THE STRESS RESPONSE. Increased concentrations of cortisol, glucagon, and epinephrine serve to increase blood glucose levels and to redirect metabolism so as to increase concentrations of fuel substrates. Finally, there appears to be a tendency towards hypercoagulability, which would likely improve hemostasis.

Explanation:

Dose this help you?

As a result of the general stress response, blood concentrations of epinephrine and cortisol rise.

What metabolic changes occur during the stress response?

When the body is under stress, the hormone cortisol, stress and steroid, is released. As a result, the body's sugar level rises, and the extra sugar aids in tissue healing.

Adrenaline is another name for epinephrine. It is a hormone used in medication. When the body experiences an emergency, this is released. When something unexpected happens, like getting stung or bitten by a dog, taking medicine, etc.

They come with charges that include faster heartbeats, higher blood sugar, and improved accuracy.

Therefore, blood concentrations of epinephrine and cortisol increase during the stress response.

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which
group is correct?

a. ringworm, mycotic infection, treatment by anthelmintic drug
ne
b. syphilis, lues, treponema pallidum
c. gonorrhea, neisseria, virus
d.trichinae, filariasis, helminthes, penicillin

Answers

Answer:

a

Explanation:

because they all cause infections

What causes a river delta to form?

A. deposits of sediment

B. a newly formed mountain

C. a convergent plate boundary

D. a divergent plate boundary

Answers

Answer:

A

Explanation:

Deposists of sediments causes river delta, that is carried by a river as the flow exits its mouth and enters slower-moving or stationary water such as ocean, sea, and lakes.

how did the white blood cell count of the abnormal blood smear differ from that of the normal blood smear

Answers

Answer: The examination focuses on the morphologies of red blood cells, white blood cells, and platelets. The percentage of each of the five types of white blood cells ...

Explanation:

What seasonal change can be seen in Florida birds during the fall?
A. Birds begin to store food and go dormant

B. Birds begin to store food and hibernate

C. Birds migrate further north to colder locations

D. Birds migrate further south to warmer locations

Answers

The answer will be:

D. Birds migrate further south to warmer location.

Answer:

B birds begin to store food and hibernate

For which of the following reasons does a 3-column organizer help you retain
information from a text?
A. It gives you a category
for placing extra information.
O B. It provides you with a
study guide for vocabulary.
O C. It visually organizes the notes you take while reading.
O D. It keeps you focused on your purpose for reading.

Can someone help

Answers

hello m'y name is ariel going to scool

Answer:

C. It visually organizes the notes you take while reading.

Explanation:



based on the Cytochrome C data, which organism is most closely related to human

Answers

Based on evolutionary relationship, the most closely related organisms will have the most similarity in Cytochrome C structure.

What is cytochrome C?

Cytochrome C is a mitochondrial protein molecule which functions as an electron carrier in the electron transport chain.

Closely related organisms have similarity in genes as well as in protein structure.

The most closely related organisms will have the most similarities in genes and proteins structure.

Therefore, the most closely related organisms will have the most similarity in Cytochrome C.

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1. Which of the following characteristics is absent in viruses?
A.
a protein capsid

B.
the ability to r e produ ce

C.
protein synthesis machinery

D.
the ability to develop gene mutations


2.Which of the following characteristics is present in both humans and archaea?

A.
the ability to maintain homeostasis

B.
the ability to as 3 xua lly reproduce

C.
a hierarchy of organ systems

D.
a cell nucleus


Which characteristic differentiates an angiosperm from a fern?

A.
the alternation of generations

B.
the presence of cotyledons

C.
the presence of vascular tissue

D.
the alternation of sporophytes

Answers

Answer:

DBD

Explanation:

that's my answer

thank me later

What type of cell does not have membrane-bound organelles?
Options:-
Prokaryotic
Eukaryotic
Somatic
Plant

Answers

Answer:

Prokaryotic cells

Explanation:

Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm.

Answer:

a) Prokaryotic

Explanation:

Prokaryotic cells do not have any membrane-bound organelles. Hence, option (a) is the correct answer.

Which of the following is a type of water pollution caused by leaded gas, The production of some pesticides, and burning garbage? Algae
dioxins
mercury
pathogens

Answers

Answer:

Dioxins.

Explanation:

Dioxin is a type of water pollution caused by leaded gas, the production of some pesticides, and burning garbage.

What do you mean by Water pollution?

Water pollution may be defined as any undesirable or contaminated substance presents in water bodies that definitely harms the life of aquatic organisms.

Dioxins are highly toxic to the environment as they are responsible for causing cancer, a threat to the immune system, etc.

They are persistent organic pollutants that take a long time in the degradation process which involves breakdown into simpler substances.

Therefore, Dioxin is a type of water pollution caused by leaded gas, the production of some pesticides, and burning garbage.

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Can someone please help with number 37

Answers

A the fallopian tube

Answer:

The answer is (A)

Explanation:

Fertilization of an egg by a sperm normally occurs in the fallopian tubes.

(The actual tube)

Which part of the respiratory system interacts with the blood to exchange gases?.

Answers

Answer:

Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them.

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