Answer:
Mitochondria
Explanation:
This organelle is the site of ATP synthesis. As the glucose molecules are broken down, the energy in electrons is used to pump H+ ions into the intermembrane space to create a proton motive force. This proton gradient is used by ATP synthase enzyme to create ATPs that is the energy currency of cells.
Answer:
Mitochondria
Explanation:
How many genders are there
Answer:
3 sexes
Explanation:
male
female
hermaphrodite
Answer:
2
Explanation:
you are either biologically a male or female but what u identify as is a completely different question.
environmental scientists are uncovered with methods to preserve natural resources
true or false
Eagles-Q
Snakes-R
Mice-S
Grain-T
Which trophic level contains
the smallest percentage of total
stored energy?
Answer:
eagles
Explanation:
Because there are fewer eagles than there are mice or snakes, by mass as well as by number. Also, in the particular case of eagles, any flying bird will tend to have very little excess mass, as flying is more work the more you weigh.
Which is a reason cells divide?
A. To reproduce
B to have a smaller surface area
C to stop binary fission
D to prevent tumor formation
answer: to reproduce
Answer:
A
Explanation:
Cells divide to A. reproduce through a process called cell division or mitosis.
Explanation:Cells divide to reproduce and this process is called cell division or mitosis. During mitosis, a cell divides into two identical daughter cells, each containing the same genetic material as the parent cell. Reproduction through cell division is important for growth, repair, and the development of multicellular organisms.
Mitosis is a cellular process in which a eukaryotic cell's nucleus divides into two identical daughter nuclei, each with the same number of chromosomes as the parent cell. It is crucial for growth, tissue repair, and as-exual reproduction in multicellular organisms. Mitosis consists of phases like prophase, metaphase, anaphase, and telophase.
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if water were a non polar molecule, how would its properties be different ?
A.) water would be a much lighter molecule
B.) water would be able to climb up inside plants
C.)water would not be able to form hydrogen bonds
D.) water would stick together much more strongly
Answer:
water would stick together much more strongly
Explanation:
Water is highly cohesive—it is the highest of the non-metallic liquids. Water is sticky and clumps together into drops because of its cohesive properties, but chemistry and electricity are involved at a more detailed level to make this possible.
We live in the Cenozoic era, and scientists know more about this era and the epochs it's divided into than any other time period. Why is this? A. We know more about the Cenozoic era because this is the only era that has had a wide diversity of species living on Earth. B. We know more about the Cenozoic era because the planet's poles reversed magnetic fields at the beginning of this era. C. We know more about the Cenozoic era because fossils don't exist to document previous eras. D. We know more about the Cenozoic era because this is the most recent time period in the history of the Earth, and we have more information available to study.
Answer:
D. We know more about the Cenozoic era because this the most recent time period in the history of the Earth, and we have more information available to study.
Explanation:
The Cenozoic era is the era that is by far the best studied and known by the scientists. The main reason for this is that this era is the most recent one, and it is actually the era we live in. Because it is the most recent era, the Cenozoic is abundant with lot of evidence of what has happened in it. The fossil records are very rich as the fossils didn't had that much time to totally decompose. The rock layers are much younger, so they contain much more detailed evidence of the plant life, climate, changes in the environment. The oceanic crust is also in abundance, which is not the case with the other eras as the oceanic crust is constantly suducted.
D. We know more about the Cenozoic era because this is the most recent time period in the history of the Earth, and we have more information available to study.
The correct option is D. The Cenozoic era is the most recent era in the geological time scale, spanning from approximately 66 million years ago to the present day. As it is the closest era to our current time, there is a wealth of information available for study. Compared to earlier eras, the Cenozoic era has been extensively documented through various sources, such as geological records, fossil evidence, and climate data.
In the Cenozoic era, there have been significant developments in the diversity and complexity of life forms, including the emergence and evolution of mammals, birds, flowering plants, and other organisms that are more familiar to us today. This increased biological diversity further contributes to the wealth of information we have about the Cenozoic era compared to earlier periods.
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Plants have many different hormones that influence their growth, development, and life cycle. For example, a cluster of over-ripe bananas on the counter can cause a newer apple to begin to ripen more quickly and go bad. Which hormone below is found in many fruits and can become airborne and cause over-ripening and abscission?
A. Abscisic acid
B. Auxin
C. Cytokin
D. Ethylene
Answer:
The correct answer is option D. ethylene.
Explanation:
Ethylene is a simple complex plant hormone and is created or produced by all organs. Ethylene is a gaseous hormone. It is transported through the spaces between cells of plants. It is responsible for fruits ripening, and causing abscission or leaves to be shed.
Ethylene promotes or flower formation in specific types of plants such as mangoes, lychees, and pineapple.
Thus, the correct answer is option D.
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Which describes a process where a precipitate is formed?
A.
A solution of AgNO3 is added to a solution of CaCl2 to produce solid AgCl and a solution of CaNO3.
B.
Propane gas combusts to form CO2 and H2O.
C.
A solution of HCl mixes with a solution of Ca(OH)2 to produce H2O and CaCl2.
D.
A solution of H2SO4 mixes with a solution of NaOH to produce water and Na2SO4.
Answer:
The answer is A. A solution of AgNO3 is added to a solution of CaCl2 to produce solid AgCl and a solution of CaNO3.
Inside Earth, a(n) ____forms due to the different temperatures of the core
and mantle.
O
A. convection cell
B. equilibrium cell
O
C. conservation cell
O
D. density cell
Answer: A. convection cell.
Explanation: The center of the Earth is known as the core, it is situated deep inside the earth, where melted lava is also found. Because of this, it becomes a very hot center of the Earth. It is also known as the powerhouse of the planet.Most of the raw sources of minerals and metals are found in the core. The melting point is very high over here and the temperature goes about 1,538 degrees Celcius resulting in drops of iron or metal compounds. This geothermal gradient of the planet and the continuous rotation of the Earth thus forms the convection cells and leads to creating a convection current.How are forest ecosystems named?
OA) by location and by dominant tree species
OB) by location and water supply
OC) by location and shelter
OD) by location and nutrients
Answer:
by location and by dominant tree species
Choice A is correct
Explanation:
Forest ecosystems are named by location and by dominant tree species.
Forest ecosystems are defined by a common set of characteristics that make the forest ecology of a given area unique. The classifications are usually named for the dominant trees and plant species.
What occurs during translation?
A. mRNA is created by using a DNA template
B. mRNA codons are joined by tRNA anticodon to assemble amino acids to form a protein
C. Protein is formed when a polypeptide chain is broken apart and released from ribosome
D. One strand of DNA Is copied into a strand of rRNA
Answer:
b) mRNA codons are joined by tRNA anticodons to assemble amino acids to form a protein.
Explanation:
mRNA codons are joined by tRNA anticodon to assemble amino acids to form a protein occurs during translation. Thus, the correct option is B.
What is translation in genetics?Genetics is defined as the process by which a cell forms proteins using the genetic information carried in (mRNA) messenger RNA. The mRNA is formed by copying DNA, and the information it carries transfer to cell how to link amino acids together to form proteins.
Peptidyl transferase is the important enzyme used in translation. It is present in the ribosomes with an enzymatic activity which catalyzes the formation of a covalent peptide bond between the amino acids present in adjacent.
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Using the drop-down menu, choose whether each organism is a producer or a consumer
There is no drop down menu but i can help all plants are producers.
Answer:
Producer, consumer , consumer, consumer, producer, producer, & producer
Explanation: just did it
what are the subsystem of the earth
Answer:
Hydrosphere, Lithosphere, Atmosphere and Biosphere
Explanation:
Everything present in earth from rocks to small stones and from huge oceans to small water living bodies can be divided into four sub-systems which are also know as earth's spheres. These are land or Lithosphere, water or hydrosphere, air or atmosphere and living things or biosphere.
Hydrosphere is the zone of earth that contains all the gaseous, solid and liquid water present on the surface of earth. It includes the water of oceans as well as huge ice capped mountains' water content.Lithosphere is the zone of earth that contains hard and cold land on earth whether it is present in the form of rocks, sand dunes or hilly scenic areas.Biosphere is simply the living part of the earth that contains all living bodies from pants to insects, fungi and animals that are able to reproduce a fertile generation and fulfill the definition of life.Atmosphere comprises all the gaseous part of the earth that is called air. It starts from approximately 1m above the surface of earth. It has a substantial role in protecting the living organisms from harmful radiations coming from sun.Hope it helps!
which of the following requires the use of energy to move a molecule across a cell membrane?
A. Active transport
B. Simple diffusion
C. Osmotic pressure
D. Facilitated diffusion
Answer:
A. Active transport is the correct answer.
Explanation:
Active transport requires the use of energy to move a molecule across a cell membrane.
Active transport is a process in which molecules move against the concentration gradient.
To move the molecules from the lower concentration region to the higher concentration region active transport use energy in the form of Adenosine Triphosphate(ATP).
ATP gives the needed energy for the active transport process to move the molecules across the cell membmbrane or concentration gradient.
Sodium potassium pump is a type of active transport it uses energy to transport the sodium ions and potassium ions inside and outside of the cells.
2 Points
What do bacteria have in common with the cells of other living organisms?
Answer:
Bacteria have cytoplasm and ribosomes which are common with the cells of other living organisms.
Explanation:
Answer: Bacteria have cytoplasm and ribosomes which are common with the cells of other living organisms.
Which statement about the difference between autotrophs and heterotrophs is true?
A.
Autotrophs transform radiant energy into chemical energy, but heterotrophs can’t.
B.
Autotrophs take in only oxygen, but heterotrophs take in both oxygen and carbon dioxide.
C.
Autotrophs have two different electron transport systems, but heterotrophs have none.
D.
Autotrophs don’t have a Calvin cycle, but heterotrophs do.
Answer:
Autotrophs transform radiant energy into chemical energy, but heterotrophs can’t.- ( A.)
Answer:
this is correct on plato
Explanation:
Which represents deposition?
gas to solid
liquid to solid
liquid to gas
solid to gas
Deposition is when a gas skips the step of becoming liquid and goes straight to a solid.
This means the answer is:
gas to solid
Hope this helped!
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Why do you think you wet the pH paper before you ignite the match?
You wet the pH paper before the ignition of the match in order to estimate the pH of the given solution. Those compounds which are not soluble in water tend to possess an inflammable property and the estimation of pH in this condition is useless.
What is the use of pH paper?The pH paper is used to determine the pH of any solution under any circumstances. It has various colors that reveal the actual pH of any solution.
Therefore, it is well described above.
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At 47 months, Amalia is not only able to make circles but also able to draw a girl and label her parts, such as legs, arms, eyes, and nose.
At 47 months, Amalia is not only able to make circles but also able to draw a girl and label her parts, such as legs, arms, eyes, and nose. This example shows that Amalia has developed fine motor coordination that is typical of her peers at this age.
At 47 months, Amalia's developmental milestones in the realm of fine motor skills and language acquisition are quite impressive. Her ability to draw a girl and label her body parts like legs, arms, eyes, and nose reflects significant cognitive and motor development for her age.
This accomplishment showcases her growing fine motor skills, hand-eye coordination, and creativity.
Drawing detailed figures like a girl involves precision in holding and controlling the writing or drawing instrument, which is a crucial skill for later academic and artistic endeavors.
Furthermore, her capability to label body parts demonstrates her linguistic and cognitive growth.
It reflects her understanding of vocabulary and the conceptual awareness of different body parts, which is fundamental for language development.
Her ability to identify and associate words with physical characteristics is an essential cognitive milestone.
Amalia's achievements at 47 months indicate her readiness for preschool or kindergarten and her potential for continued cognitive and artistic growth.
Encouraging her to explore and develop these skills further can foster her cognitive and creative abilities, setting the stage for future learning and development.
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All the genetic information within an organism is found in its
A. DNA
B. Proteins
C. RNA
All the genetic information within an organism is found in its DNA.
Where is all the genetic information in a cell?
Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).
What is genetic information in DNA?The genetic information stored in an organism's DNA contains the instructions for all the proteins the organism will ever synthesize.
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Finches living on the Galapagos Islands were critical for Darwin to develop his ideas. What key observation did he make about the finches?
A. The finches' beaks were colored differently, providing camouflage within their unique environment.
B. The finches' feathers were colored differently, providing camouflage within their unique environment.
C. The finches' beaks were uniquely adapted as tools for them to eat the food that was available to them.
D. The finches' feathers were structurally different to allow them to fly at different heights and speeds, depending on their local environment.
The finches' beaks were uniquely adapted as tools for them to eat the food that was available to them. Therefore, option (C) is correct.
The Galápagos Islands are located in close proximity to the coast of South America. The finches migrated from there to these islands. Finches were observed by Darwin to be varying on each island he explored. He noticed that the finches had beaks of varying colours.
He noticed that the food available varied on different islands, in addition to the difference in colour.The sizes of seeds were different on different islands. Okay, so the finches were able to adapt to their environments based on the types of food that were available. This made it easier for them to survive.
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Which structures carry out photosynthesis in some bacteria?
A. photosynthetic membranes
B. thylakoids
C. cell walls
D. chloroplasts
Answer:
Photosynthetic membranes
Explanation:
Which statement about plant classification below is true?
A. All vascular plants are angiosperms, but not all nonvascular plants are mosses.
B. No nonvascular plants bear seeds, but not all vascular plants bear seeds
C. Not all nonvascular plants bear seeds, but all vascular plants do bear seeds.
D. Not all angiosperms produce flowers, but all gymnosperms produce cones.
Answer:
d
Explanation:
1.A scientist wants to prevent a culture of live cells from producing a particular protein. Which of the following will the scientist MOST LIKELY modify to prevent the production of the protein? *
A.the DNA in the nucleus
B.an enzyme in the lysosomes
C.the polysaccharides in the cytoplasm
D.a phosopholipid in the cell membrane
2.Which of the following statements explains why the insertion of a nucleotide into a DNA sequence can result in a phenotypic change in the offspring? *
A.The DNA would no longer fit through the nuclear membrane to get to ribosomes for translation
B.The sequence of nitrogenous bases in the DNA would no longer code for the correct amino acids
C.Fatty acids would no longer attach to the DNA strands to transcribe the DNA
D.Antibodies would no longer recognize the DNA as belonging to the cell and would destroy the DNA
3.If the producers in a food web were removed, which of the following changes would most likely occur? *
A.The entire food web would collapse over time.
B.The food web would depend on the decomposers for energy
C.The consumers would begin making energy for the food web
D.The populations of the remaining organisms in the food web would increase
4.Prolonged periods of drought in an area cause decreases in plant population sizes. Which of the following statements describes how the decreases in plant population sizes then affect other populations in the area? *
A.Omnivore population sizes increase, and herbivore population sizes increase
B.Omnivore population sizes decrease, and carnivore population sizes increase
C.Herbivore population sizes increase, and carnivore population sizes decrease
D.Herbivore population sizes decrease, and carnivore population sizes decrease
5.The oceans have become increasingly acidic in recent years as the water absorbs more and more carbon dioxide from the atmosphere. This increased acidity interferes with the ability of corals to maintain their skeletons. In addition, an increase in water temperatures worldwide is causing coral bleaching, another condition that threatens the health of coral reefs. Based on this information, which of the following would most improve the health of coral reefs? *
A.reducing the use of fossil fuels
B.eliminating nuclear power plants
C.removing more natural gas embedded in rocks
D.replacing offshore oil drills with onshore oil drills
1. Answer: A
Explanation: For a cell to form proteins, the specific types of proteins are coded for by the genes in DNA (found in the chromosomes of the nucleus). To produce proteins, the genes are first transcribed by RNA polymerase to form messenger-RNA. The mRNA is then translated into proteins by ribosomes in the cytoplasm of the cell.
2. Answer: B
Explanation: Translation of genes into proteins is dependent on the sequence of nucleotides. They are translated in sequences of 3 nucleotides known as codons. Therefore adding a nucleotide on a piece of DNA causes what is referred to as a frame-shift mutation. The 3 sequences (of codons) is interrupted and shifted by one nucleotide. Therefore, the codons change and the amino acids translated will also change.
3. Answer: A
Expanation: Producers are significant in a food chain because they incorporate the energy of the sun into the food chain. This is why they are at the base of the food chain and have the largest biomass. They are consumed by primary consumers which are consumed by secondary consumers which are consumed by tertiary consumers and so on.
4. Answer: D
Explanation: Plants are consumed by herbivores. Therefore, a decrease in plant population due to drought was resulted to decrease in herbivore population. This is due to stiff competition by the herbivores for the scarce plant population. Carnivores consume herbivores. Due to a decrease in the herbivore population, then the carnivore population would also decrease.
5. Answer: A
Explanation: Burning of fossil fuels emits carbon dioxide gas which is a greenhouse gas. Greenhouse gas traps infrared wavelength of lights hence warming up the atmosphere, causing global warming. Reduction in use of fossil fuels will hence alleviate an increase in global temperature hence protect coral in the oceans from bleaching.
Which of the following describes a phenomenon that occurs when we observe plants that wilt?
A. The plant begins absorbing oxygen and releasing carbon dioxide into the atmosphere.
B. The roots begin to rot, causing them to no longer uptake water.
C. The xylem releases all its water.
D. The stomata close, cutting off transpiration and gas exchange.
Stomatal closure is a defense mechanism to prevent further water loss when a plant is wilting. This process cuts off transpiration and gas exchange to conserve water, but also affects photosynthesis.
When we observe plants that wilt, the phenomenon described is one where a plant's ability to uptake water through its roots is not keeping pace with the rate of transpiration. This mismatch leads to a loss of turgor pressure, which is the pressure within the cells that keeps the plant upright and firm. As the turgor pressure drops, the stomata, tiny openings on the leaves, begin to close, which reduces both transpiration and photosynthesis, and the plant appears wilted. So, the correct choice is D. The stomata close, cutting off transpiration and gas exchange. Plants absorb water primarily through root hairs, and it travels up to the leaves through the xylem. Transpiration, the process of water vapor exiting the stomata, is critical for pulling water up the plant. When this process is disrupted, the result is wilting.
How was HMS beagles voyage significant to science?
The HMS Beagle carried Charles Darwin, a renown evolutionary biologist to the Galapagos Islands where he would later observe and discover the basis of evolution by natural selection. The idea of how animals evolve is significant to science in that current scientists can now develop technology and medicine to treat humans based on our evolutionary history.
Answer:
The HMS Beagle was the ship that Darwin sailed in on his voyage to the Galapagos Islands. It would be on this voyage that he would observe the beaks of finches on different islands. He would use the information that he observed to develop his theories of natural selection.
Do you think people can misdiagnose themselves with the flu? Explain your reasoning.
Answer:
Based on my opinion, I think that people can misdiagnose themselves with flu.
Explanation:
The flu usually starts with a high fever, followed by pain in the body, head, runny nose and dry cough. Basically these are the symptoms of a common flu. However, a flu considered "normal" can lead to pneumonia, thus requiring hospitalization. If you self-medicate, without know about what kind of disease you have, you can take several risks, including: taking the wrong medicine; take an overdose of the medicine, and thus worsen your condition; If you have an allergy to such a remedy, you may even die if you take it.
It may also happen that you confuse flu symptoms with another, even more striking, illness, as mentioned earlier, pneumonia. And for this reason, you can complicated and then even die about a mistake made by yourself. It is so complicated to self-medicate without a knowloedge about each diseases, lika doctors and nurses have.
data from the study of bio geography provide evidence for evolution because they show that:
a) There are no patterns in the distribution of species on Earth.
b) every continent has the same species of organisms
c) species are most closely related to others that live nearby
d) the continents on earth have changed over time
Answer:
The answer is (C.): species are most closely related to others that live nearby.
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What is the gravity force,or weight, of a 40kg child on earth?
Answer:
Gravity force = mass × gravitational field strength (g). The child’s weight is: 40 × 10 = 400 N. (g on Earth = 10 N/kg). The child's mass is 40 kg.
Explanation:
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The weight of the child whose mass is 40 Kg on earth is 392 Newtons.
What is Weight ?
Weight is the force exerted by the earth on an object at the surface of the earth. Mathematically -
W = m x g
where -
[m] is the mass of object
[g] is acceleration due to gravity
Given is the mass of a child equivalent to 40 Kg.
We can write -
Mass [m] = 90 kg
Acceleration due to gravity [g] = 9.8 m/s²
Therefore, the weight of the child will be
W[c] = m x g = 40 x 9.8 = 392 Newtons
Hence, the weight of the child whose mass is 40 Kg on earth is 392 Newtons.
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Control of the body is accomplished by which of the following body systems?
nervous system and circulatory system
endocrine and repertory system
circulatory and respiratory systems
nervous system and endocrine systems
Control of the body is accomplished by nervous system and endocrine systems.
Explanation :
Nervous system of the body deals with the reception of the signal and producing its appropriate motor action. Nervous system controls both the voluntary and involuntary functions of the body. Neurons which are the part of nervous system helps in the sensation of whole body through which many activities like locomotion and reasoning can be executed.
Endocrine system influences the activity of a group of cells to produce a specific protein or act in a specific way. Endocrine system releases protein or steroid hormones which can act on the other parts of the body to produce other hormones are proteins which influences the functioning of other cells. Hence, both nervous system controls and endocrine system has collective activity for controlling the body. Whereas other body systems like circulatory and respiratory system are only concerned with the circulation of blood and breathing.