Answer:
It's b,
Explanation:
The process of plate tectonics may be driven by convection in Earth's mantle, the pull of heavy old pieces of crust into the mantle, or some combination of both. For a deeper discussion of plate-driving mechanisms, see Plate-driving mechanisms and the role of the mantle.
_______ from forest fires and volcanoes, as well as the decay of dead plants and animals, causes a type of pollution from carbon oxides.
Answer:
Carbon dioxide (CO2)
Explanation:
Carbon dioxide is one of the most common atmospheric gases. It is naturally produced into the atmosphere in the following ways:
- via cellular respiration in organisms
- forest fires
- volcanic eruption
- decomposition of dead matter (plants and animals)
The release of CO2 gas into the atmosphere by one or all of the above listed ways poses a great threat to the environment as it causes a type of pollution. CO2 causes pollution by being a greenhouse gas i.e gases capable of trapping heat. This results or contributes to global warming in the atmosphere.
what is cell division ?
Answer:
Cell division is the process by which a parent cell divides into two or more daughter cells .
Explanation:
I hope it helps ❤❤
Answer:
Cell division is the means of reproduction; in multicellular organisms, it is the means of tissue growth and maintenance.
Explanation:
Otherwise known as mitosis or meiosis.
atoms have a _____ surrounded by __
a negative electron, positive nuclei
b positive electron, negative nuclei
C. Positive nucleus, negative electrons
d. negative nucleus, positive electrons
Explanation:
c.) Postive nucleus, Negative electrons
Answer:
option a
Explanation:
negative electron,positive nuclei
If there is 24% adenine present in a dna helix how much thymine would be present
Answer:
24 % Thymine (T)
Explanation:
Chargaff's rules indicate that in double-stranded DNA, the proportion of Adenine (A) is equal to the proportion of Thymine (T), while the proportion of Guanine (A) is equal to the proportion of Cytosine (C). Since double-stranded DNA has 24% A, it means there will be 24% T.
Moreover, in this case, the A + T content in the double-stranded DNA is 24 + 24 = 48%, while the G + C content is 48 - 100 = 52%, i.e. G = 26% and C = 26% (26 + 26 = 52).
One of the first electronic applications used for navigation was:
LORAN-C
Sonar
Radar
Radio Direction Finder
Answer: LORAN-RC
Explanation: I had the same question.
Answer:
Sonar
Explanation:
Which of the following is likely abiotic limiting factor of fish in a pond ecosystem? Pollution Disease-causing bacteria Food supply Predators
Answer:
pollution
Explanation:
Answer:
Pollution
Explanation:
Becauc=se it is the only abiotic answer and it would kill the fish limiting the fish.
What effect does continual mowing have on the ecology field
Answer: Mowing increases the likelihood of nonnative species displacing native species.
Explanation:
Answer:
Mowing increases the likelihood of nonnative species displacing native species.
What is the function of a fruiting body?
.which of the following can a chemical bond do?
a all of these
B store energy
c change element properties
d realease energy
What prevents acetylcholine from accumulating in the neuromuscular junction and causing a sustained contraction in a normal individual
Answer:
Botulinum toxin
Explanation:
Botulinum toxin is known to hinder the release of acetylcholine into the synaptic cleft at the neuromuscular junction.
This leads to acetylcholine not attaching to its receptors and eventually leading to the inability to have muscle contractions.
Hence, in this case, the correct answer is Botulinum toxin prevents acetylcholine from accumulating in the neuromuscular junction in individuals.
Collection of abiotic and biotic factors together in an environment__________
A-Ecosystem
B-organism
C-Ecology
D-species
E-abiotic
F-Biotic
G-community
H-population
Cellular Respiration happens in the
(Select all that apply)
Mitochondria
Cytoplasm
Chloroplast
Cell Membrane
Answer:
Mitochondria
Explanation:Cellular respiration occurs in the double-membrane organelle called the mitochondrion.
If other beavers move to this area to build a dam, what is one need for which they are most likely competing?
Answer:
space adequate for building a shelter
Explanation:
edge 2021
1. These structures are enclosed compartments which are filled with water containing inorganic and organic molecules including enzymes in solution.
Answer:
Vacuoles
Explanation:
Vacuoles have enclosed compartments which are filled with water containing inorganic and organic molecules including enzymes in solution.
A population of mice in a field contains 5000 individuals at the beginning of a study. During the course of 1 year 2500 new individuals are born and 1000 individuals die, such that the population size after 1 year is 6500. Assuming that annual per capita birth rate (b) and per capita death rate (d) do not change, what will the population size be after another year has passed
Answer:
The population size would be of 8,450 mice.
Explanation:
While the initial population of mice was 5,000 and there were 2,500 new births, the birth rate is 50% (2,500 / 5,000 = 0.5). Now, the 1,000 deaths, in turn, represent a mortality rate of 20% (1,000 / 5,000 = 0.2). In this way, at the end of the year, the number of mice became 6,500 (5,000 - 1,000 + 2,500).
Maintaining the same population growth rates, the number of new births would be 3,250 (6,500 x 0.5), and the number of deaths would be 1,300 (6,500 x 0.2), with which at the end of the second year the number of mice would be 8,450 (6,500 - 1,300 + 3,250).
Cells of an organism perform the following chemical reaction: 6 CO2 + 6 H2O + → C6H12O6 + 6 O2 To which organism do these cells most likely belong? A. a rubber tree plant B. an earthworm C. a whale D. a rabbit
Answer:
A. a rubber tree plant.
Explanation:
Hello!
In this case, since plants perform a process called "photosynthesis", by which the carbon dioxide and water are taken into the vegetable cell and get transformed into sugar (glucose) and oxygen; the organism the perform the given reaction is A. a rubber tree plant as such reaction shows the aforementioned process. It is important to mention that the rest of them perform cellular respiration, which is the contrary one:
C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
In order to get energy.
Best regards!
An organism that converts sunlight to make its own food is called a(n) Choose all that apply.
producer.
producer.
chemotroph.
chemotroph.
autotroph.
autotroph.
heterotroph.
heterotroph.
Answer:what he said^
where stem cells transform to T cells
Answer:
Scientists from the UCLA AIDS Institute and the Institute for Stem Cell Biology and Medicine have derived T-cells from human embryonic stem cells, raising hopes for a gene therapy to combat AIDS. The Proceedings of the National Academy of Sciences reported the findings in its July 14, 2006, online edition.
“We may be able to use human embryonic stem cells to treat T-cell and other blood diseases,” says lead author Zoran Galic, assistant research biologist. “This could be a very important weapon in the fight against AIDS.”
The researchers cultured human embryonic stem cells and incubated them on mouse bone-marrow cells, which in turn converted them into blood-forming cells. Those cells were injected into a human thymus that had been implanted in a mouse. The thymus transformed the bloodforming cells into the T-cells that HIV targets for destruction.
“Our results indicate that it’s possible to decipher the signals that control embryonic stem cells’ development into mature T-cells,” says Jerome Zack, associate director of the UCLA AIDS Institute and professor of microbiology, immunology and molecular genetics. “This way we can eventually repopulate the immune system of patients needing T-cells.”
One of the body’s main defenses against disease, Tcells are manufactured in the thymus. The organ shrinks as we age, weakening the immune system. The scientists anticipate that their findings could give rise to gene-therapy approaches for other diseases related to T-cells such as severe combined immunodeficiency, or “bubble-boy disease.”
Explanation:
Explanation:
T cell progenitors originate in the bone marrow and, through a series of defined and coordinated developmental stages, enter the thymus, differentiate, undergo selection, and eventually mature into functional T cells.
A nation has a population growth rate of 3.2%. The country currently has a population of 12 million. In how many years will the
population be 48 million, assuming a constant growth rate?
A)
44 years
B)
70 years
C)
88 years
D)
100 years
Answer: A) 44 years
Explanation:
which of the following is not an example of responding to stimuli?
a.Maintaining internal ph levels
b. pulling your hand away from something hot?
c.stopping at a red light?
d plants growing towards light?
Answer:
i think the answer is B. As it does not happen as a response to certain action
Explanation:
hope it helps
Gizmo River Erosion Answer Key
Can someone please give me the answer key :( Ill give brainliest
Answer:
sure
Explanation:
ok
why does air pressure decrease with increasing altitude within earth's atmosphere
Answer:
At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels. ... Since most of the atmosphere's molecules are held close to the earth's surface by the force of gravity, air pressure decreases rapidly at first, then more slowly at higher levels.
Explanation:
Which of the following is an example of a mechanical wave?
ultraviolet light waves
radio wave
vibrating guitar string
Blue light waves
Answer:
ultra violet light waves
Which sequence best describes apoptosis at the G1 checkpoint?
Answer:
The correct answer is "Cdk/cyclin complex is inhibited→ p53 levels rise → p21 production increase".
Explanation:
The missing options of this question are:
A. p53 levels rise → p21 production increase → Cdk/cyclin complex is inhibited
B. p21 production increase → Cdk/cyclin complex is inhibited→ p53 levels rise
C. Cdk/cyclin complex is inhibited→ p21 production increase → p53 levels rise
D. Cdk/cyclin complex is inhibited→ p53 levels rise → p21 production increase
E. p53 levels rise → Cdk/cyclin complex is inhibited→ p21 production increase
The correct answer is option D. "Cdk/cyclin complex is inhibited→ p53 levels rise → p21 production increase".
Apoptosis is a process at which the cells undergo a programmed death. This mechanisms happens at G1 checkpoint first by the inhibition of Cdk/cyclin complex which causes p53 levels to rise and later, an increment of p21 production. First, a cyclin-dependent kinase inhibitor regulates the inhibition of the Cdk/cyclin complex. This causes p53 levels to rise, since p53 is a direct downstream kinase substrate for CDK. Subsequently, p21 production increase as well since p21 is a inhibitor of cyclin-dependent kinases.
Strawberry plants can reproduce sexually by
producing fruit or asexually by sending out runners.
Runners are extensions of the central stem of the
plant that spread out along the ground and grow
into new strawberry plants.
3. What is the advantage of sending out many
runners from the central stem? What is the
disadvantage to the central plant?
Answer:
ooh fruit sex lol
Explanation:
The change in physical traits of different species to survive in their environment is an example of an __________________?
Answer:Evolution consists of changes in the heritable traits of a population of organisms as successive generations replace one another.
Explanation:
The sensor or detector tells the integrating center what needs to be done
True
False
Answer:
True
Explanation:
It is true because a sensor or detector is an organ that detects external stimuli from the environment or changes in both internal and external environment, it then send the information to the integrating center.
The integrating center receive stimulus or information from sensor and activate responses to the stimulus.
Describe the energy transformation that takes place as the roller coaster moves up the hill and explain how each form of energy changes.
Answer:
A roller coaster ride is a thrilling experience which involves a wealth of physics. Part of the physics of a roller coaster is the physics of work and energy. The ride often begins as a chain and motor (or other mechanical device) exerts a force on the train of cars to lift the train to the top of a very tall hill. Once the cars are lifted to the top of the hill, gravity takes over and the remainder of the ride is an experience in energy transformation.
When comparing proteins and polysaccharides, the following similarities
can be identified: *
Both consist of linked monomers via the process of dehydration reactions.
O Both consist of linked monomers via the process of hydrolysis.
O Both consist of linked sugars via the process of dehydration synthesis.
O O
Both consist of linked amino acids via the process of hydrolysis.
Answer:
The comparison of proteins and polysaccharides establishes that they have similarity in both consist of linked monomers via the process dehydration reactions.
Explanation:
Both proteins and polysaccharides are polymers whose structure consists of the union of monomers. In the case of proteins the monomer is the amino acid, while in the polysaccharides can be glucose molecules.
The process of polymer formation is called polymerization, and one of the reactions that this process allows is polycondensation, where a water molecule is lost in the union of monomers.
The loss of water in a chemical reaction involves dehydration, a characteristic shared by the processes of adding monomers to proteins and polysaccharides.
The other options are not correct, because
Hydrolysis produces the rupture of molecules, with the intervention of water.Only polysaccharides are sugars bound by the dehydration synthesis process.Only proteins consist of amino acids linked through the process of hydrolysis.need help asap will give brainlist
Answer: the correct answer is the one you have clicked, D
Explanation:
Answer:
D.
Explanation: