Answer:
Mitochondria and chloroplasts are semiautonomous organelles, with many similarities to bacteria.Mitochondria resemble bacteria in size and shape and are surrounded by double membranes, the inner of which has bacterial-type lipids. Chloroplasts have circular DNA molecules.Explanation:
The endosymbiotic theory essentially states that some organules of the eukaryotic cells, such as mitochondria and chloroplasts, were once free-living bacteria. Probably, these organisms must have been phagocytized, but not digested by another cell. On the contrary, these bacteria were able to adapt to their host in such a way that the two cells established a dependent relationship with each other.
Due to its similarities to other free-living bacteria, it has been speculated that chloroplasts must derivate from cyanobacteria (they both absorb sunlight and store the energy in ATP, and produce organic molecules) and that mitochondria must derivate from rickettsias (they produce ATP in the same manner, by using the Krebs Cycle and Oxidative Phosphorylation).
From the phagocytosis moment, these two cells created a new bond between them of mutual benefit, becoming dependant on each other, up to the point that they would not be able to survive without the other one.
This theory is supported by a few characteristics of the chloroplasts and mitochondria that suggest that they once were a free cell. For example,
Both organelles present their own genetic material. This DNI is independent of the DNA of the cells, is bi-catenary and circular, identical to the DNA of the bacteria, and very different from the one of the eukaryotic cells. These organelles divide by binary fission and not by mitosis, and are capable of synthesizing their own ribosomes and organelles. Both organelles present a double membrane, a characteristic that reinforces the idea of being phagocyted. The internal membrane looks identical to the membrane of bacterias, while the external membrane looks like the eukaryotic one.In fact, in this internal membrane are placed the energy centers, exactly as it occurs in bacterias membrane.
Finally, the sizes of the organelles are similar to the size of some procaryotes.Reverse faults are the result of tension.
True or false?
Answer:
can you helppp me with dna
I will mark brainliest!! THANK YOU! Students are discussing differentiation of cells in an organism. Which student has to most accurate description of differentiation?
Answer:
Student 2
Explanation:
I think it is student 2 because differentiation is the dividing and changing of embryonic stem cells into cells that are specialized in structure and function. Some stem cells form liver cells, some heart cells, muscle cells.
Answer: Student 1: differentiation occurs during reproduction.
Explanation:
The process of cell differentiation starts with the fertilization of the female egg. As soon as the egg is fertilized, cell multiplication is initiated resulting in the formation of a sphere of cells known as the blastocyst.
How many stops can you potentially make on your trip? Why?
8. Plant cells have some parts that animal cells do not have. Plant cells have __________, __________, __________.
9. Most of the organelles in plant and animal cells are inside the __________
10. _________ cells have a “box” shape,
11. __________ cells are more round
12. The ____________ in plant cells provide an additional layer outside the cell membrane for support the plant.
13. The cell wall separates the inside of the _________ cell from the environment.
14. __________ in plant cells are responsible for performing the process of photosynthesis. If they stop working, photosynthesis will not be taking place in the plant.
15. Plant cells have a ________________ that stores water, nutrients, food and waste products.
16. The________________ are the organelles that makes proteins.
17. Cells move water and materials through the _____________.
Answer:
8. Vacuole, Cell wall , Chloroplast
9. cell
10. Plant
11. Animal Cell
12. Cell wall
13. plant
14. Chloroplast
15. Vacuole
16. Ribosomes
17. Plasma Membrane
plz correct me if im wrong
does coal releases carbon dioxide into the atmosphere?
Answer:
yes
Explanation:
Coal is an important source of energy in the United States, and the Nation's reliance on this fossil fuel for electricity generation is growing. The combustion of coal, however, adds a significant amount of carbon dioxide to the atmosphere per unit of heat energy, more than does the combustion of other fossil fuels
the role of a producer is to :
A)eat orher consumer
2)provide food for carnivores 3)make carbon dioxide
4)provide food for themselves and other organism
Answer:
4)provide food for themselves and other organisms
Explanation:
How do dating methods of geological evidence prove the convolution of earth systems?
Answer:
because it can tell you how old a segment of rock is and what type of minerals are in the segment of rock
Explanation:
Which of these landforms is created due to deposition?
Cirque
Fjord
Horn
Sandbars
Answer:
The landforms created from deposition is Cirque
Answer:
i think it cirque only
What is the name of the thick, lower end of the digestive tract where solid waste is gathered and leaves the body? O esophagus o small intestine Oliver o large intestine
Answer:popopopop
Explanation:
give point
Answer: Large Intestine
Hope this helps
The island spotted skunk and the island fox are both predators of the island
deer mouse (the prey). How could these two predators establish different
niches and still prey upon island deer mice? *
A. the island spotted skunk hunts at different times than the island fox
B. the island spotted skunk hunts in the same area as the island fox
C. the island fox eats only cherries instead of deer mice
D. the island deer mice swim to a different island to avoid predators
Answer:
I think the answer is A because if they hunt at the same time they will kill themselves
two effectors in the body
Answer:
i hope this helps
Explanation:
Effectors include muscles and glands - that produce a specific response to a detected stimulus. For example: a muscle contracting to move an arm. muscle squeezing saliva from the salivary gland.
Help plz for the 3 of emmm!
Plzzzz and thank you!
Answer:
1.C
2.A
3.B
Explanation:
mark me as brainliest
DNA contains the code for for constructing which molecules?
Lípids
Proteins
Carbohydrates
Suzars
Question 13
6.7 pts
Answer:
proteins
Explanation:
please help me im timed and will give brainiest:(
Answer:
turtles, crocodiles, snakes, dinosaurs, and birds
Explanation:
Answer:
why u ghosting me
Explanation:
Column A
Column B
1.
a. biotic
A community of interacting biotic and abiotic
factors.
Living factors in an ecosystem.
2. d
b. herbivores
3.
a
Non-living factors in an ecosystem
c. ecosystem
e
d. abiotic
4 5.
Organisms that can obtain energy directly from
the sun.
Organisms that obtain energy by feeding on
other organisms
Primary consumers
e decomposer
6.
f producers
7. h
Animals that feed on the flesh of other animals.
g consumers
8.
h. carniyores
k
Consumers that feed on both plants and animal
flesh
Literally meaning self-feeding
9.
i heterotroph
b
j. autotroph
10.
Literally meaning feeding on others
k.
omnivores
11.
f
Organisms (bacteria, insects, worms, and fungi)
that break down animal waste and dead
organ
Answer:
1. A community of interacting biotic and abiotic factors. - C. ecosystem
2. Living factors in an ecosystem. - A. biotic
3. Non-living factors in an ecosystem. - D. abiotic
4. Organisms that can obtain energy directly from the sun. - J. autotroph
5. Organisms that obtain energy by feeding on other organisms - I. heterotroph
6. Primary consumers . - B. herbivores
7. Animals that feed on the flesh of other animals. - H. carnivores
8. Consumers that feed on both plants and animal flesh . - K. omnivores
9. Literally meaning self-feeding . - F. producers
10. Literally meaning feeding on others . - G. consumers
11. Organisms (bacteria, insects, worms, and fungi) that break down animal waste and dead organisms. - E. decomposer
Explanation:
Help me out here? 10 Points!
Answer:
I did that yesterday
i can help
Genes carry the codes that tell the body how to form itself.
True or False
4. All of the offspring of an organism have the same genetic material, which is identical to the
parent organism. From this, we can conclude that this organism -
a. makes its own food
b.is unicellular
c. live in a marine habitat
d reproduces asexually
5. Bacteria reproduce asexually by a process called
a. Meiosis
b. binary fission C. replication d. regeneration
How are traits passed from parent(s) to offspring in sexual vs. asexual reproduction?
Answer:
Heredity
Explanation:
the passing on of physical or mental characteristics genetically from one generation to another
In the lungs, what can affect the suface area
What is one of the causes of mechanical weathering? A acid rain B oxidation C animal actions D carbon dioxide
Answer:
The answer is animal actions
Explanation:
It said it in the guided notes associated with the lesson.
The answer is C animal actions
5. Which of the following explains a way in which metamorphic rocks are formed?
a. through intense changes in heat
b. through intense change in pressure
c. through chemical changes
d. All of the above explain ways in which metamorphic rock can occur.
Answer:
D. All of the above explain ways in which metamorphic rock can occur.
can someone give me good evidence please i will give you brainliest
Answer:
you can get evidence by observing how people have different traits from their parents, like one sibling can look different than they other sibling, they can get traits from older generations, like you can have a family that has black hair or dark brown and one of their kids got light brown hair because that was passed down or skipped through a generation.
Explanation:
pls help this is major plssssssss help!
The young maggots grow rapidly because of _____ offered by the dead body.
the bad smells
the rich food source
the safety
the garbage located near the body
Answer:
The rich food source offered by the dead body
Explanation:
Since the maggots are surrounded by large amounts of food right off the get go they are able to consume plenty of protiens to assist in their growth.
Answer:
2. the rich food source
Explanation:
on quizlet and took it on test
I put a picture does anyone know the answer to that
Answer:
C- All members of the population are genetically similar and are less likely to survive environmental change.
Explanation:
In asexual reproduction, there is no diversity since the offspring gets all their genes from their parent. That being said, they won't be able to inherit traits that would help them survive in a changing environment since there is no diversity of traits that would help them in other environments.
Answer:
I think it is C
Explanation:
how do government subsidies contribute to inefficient use of water?
Answer:
They dont lOlololoLOlololOl
Explanation:
WILL GIVE BRAINLIEST
Which of these would have the least effect on natural selection in a
subspecies of giraffes that is geographically isolated from other
subspecies of giraffes?
A. available niches
B.existing predators
C.chromosome number
D.available food resources
Answer:
C. chromosome number
Explanation:
Chromosome number is not a factor that influences natural selection. The other three choices represent factors that drive the process of natural selection.
hope this helps some :3
What is the phylum and class of a squid
Answer: phylum Mollusca, class Cephalopoda
Explanation:
A segment of RNA reads A U G U C C A C A. Use the codon table to determine what sequence of amino acids for the segment should be?
Answer:
Met-ser-thr
Explanation:
Im good at this stuff xd