Answers
Answer:
Explanation:hmm think about your vocab
Related Questions
HELP!!! Which of the following represent examples of how cells in multicellular organisms can communicate with each other to coordinate their activities? Select all that apply.
A. nucleus of eukaryotes
B. nervous system
C. hormones
D. red and white blood cells
Answers
Answer:
The answer is B andC
Explanation:
do you guys know what to do? because i definitely don’t. i’m stumped so 20 points if you guys can help me out.
Answers
here you g its here gggggggg
i
The muscle cells of an elephant contain 62 chromosomes. How many chromosomes are in an elephant egg cell?
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Answer:
There are 23 chromosomes in an elephant egg cell.
Hope it helps!
Elephant egg cell has 31 chromosomes which is a result of meiosis.
What is chromosomes?"Chromosomes are structures found in the center (nucleus) of cells that carry long pieces of DNA."It contains genes (hereditary unit).What is meiosis?It is a type of cell division which occurs in reproductive cells."It reduces the number of chromosomes in the parent cell(2n) by half(n) and produces four gamete cells(each having n chromosomes)."Elephant parent cell has 62 chromosomes after meiosis gametes have 31 chromosomes.
Hence, 31 chromosomes are present in elephant egg cell.
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"Crossing Over" is a key part of the process because it leads to:
a
the completion of mitosis
b
growth and repair of body cells
c
genetic variation
Answers
Answer:
d
Explanation:i just know
Which star has the greatest luminosity?
A)
Barnard's star
B)
Procyon
C)
Alpha Centauri
D)
Rigel
Answers
Answer:
c
Explanation:
Rigel, also known as Beta Orionis, is the star with the greatest luminosity. Therefore option D is correct.
It is a blue supergiant and one of the brightest stars in the night sky. Luminosity refers to the total amount of energy radiated by a star per unit of time.
Rigel's immense luminosity is a result of its massive size and high surface temperature. It is located in the constellation Orion and is approximately 860 light-years away from Earth.
Rigel's brightness and luminosity make it a prominent and significant celestial object, visible even to the eye, and it plays a vital role in the constellation's distinctive appearance.
Therefore option D is correct.
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How are young volcanoes evidence of cracks in
the earth's surface to magma below?
Answers
These separating borders create fractures and fissures in the rocks. It is these cracks in the land that allow hot magma to surge upwards and fill the gaps.
Helpppppppppppppppppppppp ! Its Not Hard
Answers
Answer:
cytoplasm, dna ,cell membrane
Explanation:
Which of the following statements about mitochondrial chemiosmosis is NOT true?
A
A proton gradient is established across the inner membrane of the mitochondrion.
B
The potential energy released from the mitochondrial proton gradient is used to produce ATP.
с
The mitochondrial proton gradient provides energy for muscle contraction
D
Proteins embedded in the inner mitochondrial membrane play an important role in ATP synthesis,
E
Heat energy is required to establish the electron transport chain
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Answer:
Heat energy is required to establish the electron transport chain
Explanation:
The rest of the choices are true about mitochondrial chemiosmosis
5 facts about the L.A. flood of 1938
I will give you all my points!
Answers
Answer:
1. The Los Angeles flood of 1938 was one of the largest floods in the history of Los Angeles, Orange, and Riverside Counties in southern California.
2. The flood was caused by two Pacific storms that swept across the Los Angeles Basin in February-March 1938 and generated almost one year's worth of precipitation in just a few days.
3. The Los Angeles, San Gabriel, and Santa Ana Rivers burst their banks, inundating much of the coastal plain, the San Fernando and San Gabriel Valleys, and the Inland Empire.
4. Flood control structures spared parts of Los Angeles County from destruction, while Orange and Riverside Counties experienced more damage.
5. It caused $78 million of damage ($1.42 billion in 2019 dollars),[2] making it one of the costliest natural disasters in Los Angeles' history.[3] In response to the floods, the U.S. Army Corps of Engineers and other agencies began to channelize local streams in concrete, and built many new flood control dams and debris basins
Explanation:
Name the 2 smaller regions the Northeast is sometimes divided into.
Answers
Answer:
New England and the Middle Atlantic states.
Explanation:
The region is often subdivided into New England (the six states east of New York State) and the Mid-Atlantic states (New York, New Jersey and Pennsylvania).
Hope this helps :)
What is the word equation for photosynthesis?
Answers
Answer:
The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen.
PLS ANSWER C six H twelve O six, plus six O two, yields six C O two, plus six H two O, plus energy.
In your own words, explain what the summary equation tells you about cellular respiration.
Answers
Answer:
Explanation:
The overall (unbalanced) chemical equation for cellular respiration is: C6H12O6+O2→CO2+H2O+energy. Explanation: The balanced equation ...
Which of the following phenomena usually only has an effect on very small populations?
Mutations
Mutations
Recombination
Recombination
Gene flow
Gene flow
Genetic drift
Answers
A) Populations
B) Genes
C) Individuals
D) Communities
A population is defined as:
A) all individuals of all species located throughout the world
B) all individuals of the same species located in a given geographic region
C) all individuals of the same species located throughout the world.
D) all individuals of all species located in a given country.
E) those individuals of the same species that have an identical genetic makeup.
The allele frequency of a population is the:
A) sum of all genes in that population.
B) relative proportion of a given allele in that population.
C) number of different types of alleles in that population.
D) number of all alleles in that population.
Genetic Drift is the change in the gene frequency of a population over time. The Genetic Drift only has an effect on very small populations.
What is Genetic Drift?It can be defined as the change in the gene frequency of a population over time by chance.Genetic Drift affects populations of all sizes but the effect is large for the small population.It plays a major role when the size of the population is reduced by a disaster or a small population splits up from the founding population.Therefore, the Genetic Drift only has an effect on very small populations.
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Imagine you have a garden with tomatoes.
Answers
How might a farmer use artificial selection to increase crop yields over time?
Answers
Answer:
artificial selection has a long been used in agriculture to produce animalsand crops with desirable traits. the meatssold today are the results of the selective breeding of chickens, cattle, sheep and pigs. many fruits and vegetables have been improved or even created through artificial selection.
HELP ME PLEASE BEEN LOOKING FOR AN ANSWER FOR HOURS
What materials do motor neurons need to survive and how do they get those materials?
Answers
Answer:
Neurons are made up of three major parts: a cell body, or soma The part of the neuron that contains the nucleus of the cell and that keeps the cell alive., which contains the nucleus of the cell and keeps the cell alive; a branching tree like fiber known as the dendrite, which collects information from other cells and sends the information to the soma; and a long, segmented fiber known as the axon, which transmits information away from the cell body toward other neurons or to the muscles and glands.
Some bacteria of the same species and genotype can reduce sulfur anaerobically for energy, depending on the environment. This
an example of...
A)growth and response
B)genotype mutation
C)phenotypic plasticity
D)inclusive fitness
Answers
Answer:
C) phenotypic plasticity
Explanation:
The ability of an organism to change phenotypically according to environmental conditions is known as Phenotypic plasticity.Organisms might adjust their morphology and physiology to a better performance in environmental heterogeneity.
Generalists species might present a higher magnitude of phenotypic plasticity than specialist species.
Sulfur-reduction bacteria are obligated anaerobic microorganisms, that are metabolically versatile. They might grow either as heterotrophs using organic molecules or as autotrophs using hydrogen and carbon dioxide.These bacteria are notoriously adaptable and might be found in many different environments (terrestrial and/or aquatics) where there is no oxygen due to aerobic decomposition of the organic matter.
They can be found in anoxic sulfuric environments. In the soil, in estuaries mud, in freshwater, in sewage systems, salty waters, thermal water, sulfur deposits, in oil and gas wells, and even in animals and insects intestine.
What is the unknown substance? Be sure to explain how you know
Answers
Answer:
The last one
Explanation:
All other substances use their chemical name, not a generic name like the last one
Rachel and Matt believe that magnet 2 is responsible for the elevated position of magnet 1. Which two updates could be made to the model to help gather more evidence?
A. Drop two more magnets on the top of the stack and observe whether or not the interaction between magnet 1 and 2 changes.
B. Remove magnets 2, magnet 3, and magnet 4 from the wooden dowel and observe whether or not magnet 1 remains elevated
C. Remove magnets 1 and 2 from wooden dowel, but keep the orientation of magnet 3 and magnet 4 the same.
D. Drop one more magnet on the top of the stack and observe whether or not the interaction between magnet 1 and magnet 2 changes
E. Remove magnet 3 and 4 from the wooden dowel, but keep the orientation of magnet 1 and magnet 2 the same.
Answers
Answer:
A kfutchhv kurghghuvghffhkdjlhgkncuvvkcgyghcfjhjvhDrop two more magnets on the top of the stack and observe whether or not the interaction between magnet 1 and 2 changes. Thus, option A is correct.
What is energy?Energy is the quantifiable attribute that is transferred to a body or a physical system in physics. It is observable in the production of work as well as in the form of heat and light. Energy can be transformed in form but cannot be created or destroyed, according to the rule of conservation of energy.
The following is accurate regarding the magnets at issue: "While the magnets are kept separated, their kinetic energy and velocity are both at zero, but when they're let go and move together, they both quickly increase. The magnetic field's ability to retain energy declines."
The magnetic field's energy remains constant when a magnet is brought close to a rubber band. In the fourth question, kinetic, thermal, and gravitational energy are formed from some of the energy that has been stored.
Therefore, Drop two more magnets on the top of the stack and observe whether or not the interaction between magnet 1 and 2 changes. Thus, option A is correct.
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ANSWER ASAP Which factor determines the amount of gas that can dissolve in ocean water? (A) the motion of the air above the ocean water (B) the temperature of the air above the ocean water (C) the motion of the ocean water currents D the temperature of the ocean water
Answers
Answer:
the answer is b
Explanation:
b because i say so
what economic benefits does species diversity provide for humans?
Answers
Answer:
Food production relies on biodiversity for a variety of food plants, pollination, pest control, nutrient provision, genetic diversity, and disease prevention and control. Both medicinal plants and manufactured pharmaceuticals rely on biodiversity
What statements are true about the biological macromolecules
-All biomolecules could be called carbon-based molecules.
-The monomers of DNA are nucleotides.
-Ready cellular energy comes in the form of lipids.
-Carbohydrates contain nitrogen and therefore differ from the other macromolecules
-Cell membranes are made, in part, from phospholipids.
-The monomers of starch are monosaccharides.
Answers
Answer:
- all biomolecules could be called carbon - based molecules
- The monomers of DNA are nucleotides
- Cell membranes are made, in part, from phospholipids
- The monomers of starch are monosaccharides
Explanation:
Just got that question!
The statements that are true about the biological macromolecule include:
All biomolecules could be called carbon-based molecules. This statement is true concerning biomolecules because all living organisms are made up of the carbon-based molecules which includes:carbohydrates, lipids, proteins, and nucleic acids.The monomers of DNA are nucleotides. This statement is TRUE because Deoxyribonucleic acid (DNA) are polymers which are made up of nucleotide bases.The monomers of starch are monosaccharides. This statement is TRUE because starch is a complex carbohydrate that is made up of long polymers of monosaccharides.Cell membranes are made, in part, from phospholipids. This statement is TRUE because a typical structure a cell membrane contains phospholipids which forms the lipid bilayers that makes it a selective permeable membrane.The biological macromolecules that contains false statements include
Ready cellular energy comes in the form of lipids. This statement is false because cellular energy readily comes from glucoseCarbohydrates contain nitrogen and therefore differ from the other macromolecules. This statement is false because carbohydrates and lipids are made of only carbon, hydrogen, and oxygen but not nitrogen.Learn more here:
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How do they affect life on Earth today?
Answers
Answer:
air pollution
Explanation:
NEED HELP QUICK PLSSSS
Answers
Answer:
I didnt really know how to put it into words, so I filled in your chart for you. Hope you like it and that I was not too late in completing this.
orange: frontal lobe
blue: parietal lobe
green: temporal lobe
yellow: occipital lobe
the cerebellum is is white ball-like part
then the top box is the Pons while the bottom one is the brain stem
Explanation:
that's what I remember from my pltw class
What are examples of molecules that can be used for molecular clock?
A. Mitochondrial DNA
B. Ribosomal RNA
C. Cytochrome C
D. Chloroplast DNA
Answers
Answer:
The biomolecular data used for such calculations are usually nucleotide sequences for DNA, RNA, or amino acid sequences for proteins.
Answer:
Examples of molecules that can be used for molecular clocks include: Mitochondrial DNA , Ribosomal RNA , and Cytochrome C.
Let me know if this helps!
Select the correct response regarding the relationship between photosynthesis and cellular respiration. a The reactants and products of photosynthesis has no relationship with the reactants and products of cellular respiration.
A. The reactants and products of photosynthesis has no relationship with the reactants and products of cellular respiration.
B. The products of cellular respiration are the reactants of photosynthesis.
C. The reactants of photosynthesis are the reactants at cellular respiration.
D. The products of cellular respiration are the products of photosynthesis.
Answers
The correct response regarding the relationship between photosynthesis and cellular respiration is option B. The products of cellular respiration are the reactants of photosynthesis.
Photosynthesis and cellular respiration are two essential processes in autotrophs. These processes are opposite to each other as photosynthesis is an anabolic and respiration is a catabolic process.
In photosynthesis, carbon dioxide and water are reactants that are combined to form glucose. Light energy is stored in chemical energy in this process. In cellular respiration, glucose is oxidized in presence of oxygen and produces water and carbon dioxide as products, and releasing ATP is released as the source of energy.Thus, the correct answer is - option B. The products of cellular respiration are the reactants of photosynthesis.
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4. Penicillin is capable of one of the following. Which one? *
Answers
Answer:
Antibiotics are compounds produced by bacteria and fungi which are capable of killing, or inhibiting, competing microbial species. ... But it was not until 1928 that penicillin, the first true antibiotic, was discovered by Alexander Fleming, Professor of Bacteriology at St.
What causes ocean water to be colder at the poles than at the equator
Answers
Answer:
Ocean currents warmed by the Sun's energy carry heat from the equator toward the poles as well. Evaporation of surface water, rain and other precipitation, wind and ocean currents move warm air toward the poles and bring cold air toward the equator.
Explanation:
A glass is sitting on a table and does not move. Explain
the forces acting on the glass that does not allow it to move.
Use "net force" in your explanation.
Answers
Explanation:
For a stationery object on a surface, two forces are acting on the body, the weight of the object acts downward, and the reaction force of the table acts upward, thus following Newton's third law of motion. Also, since it's stationary, the net force is equal to zero
A car turns left while maintaining a speed of 20 m/s. Does the car’s velocity change? Explain your reasoning!
Answers
Answer:
Yes
Explanation:
Speed is a scalar quantity (only has a magnitude). It signifies the rate of change of an object's movement.
Velocity is a vector quantity that signifies the rate of change of movement but also the direction of an object's movement.
Since the car turns, its direction changes, so the velocity changes.