Answer:
Genetic variation can be caused by mutation which can create entirely new alleles in a population, random mating, random fertilization, and recombination between homologous chromosomes during meiosis which reshuffles alleles within an organism's offspring.
Explanation:
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Answer:
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
Question 7 of 10
Which part of a tube worm's cells keeps excess salt from entering the cells?
A. The cytoplasm
B. The cell nucleus
C. The cell membrane
D. The cytoskeleton
SUBMIT
Answer:
its C. The cell membrane
Explanation:
what element is in period 6, group 17
It is element At, or Astatine. Number 85 on the periodic table
What is a way that humans enjoy acute stress ?
Acute stress comes with a lot of adrenalin and for most people living ordinary lives lacks that. -hope this helps have an amazing day!!
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Which statement best describes a population that competes for reproductive purposes?
Animals push each other to access water.
Hyenas quarrel over a fresh animal kill.
Squirrels and chipmunks collect food for the winter months.
Members of the same species battle each other to protect their young.
Answer:
DDDDD Members of the same species battle each other to protect their young.
Explanation:
The statement that best describes a population that competes for reproductive purposes is members of the same species battle each other to protect their young. The correct option is D.
What is competition?Competition is an interplay between life forms or species in which both necessitate a scarce resource.
Competition reduces the fitness of both organisms involved because the presence of one reduces the amount of resource available to the other.
The varying relationships between breeding success and specific traits in the two genders provide a foundation for predicting the shape of gender differences that are likely to evolve.
Adequate nutrition during pre-mating periods was found to have the greatest impact on various reproductive processes in mammals.
Members of the same species battle each other to protect their young, which best describes a population that competes for reproductive purposes.
Thus, the correct option is D.
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what is ecosystem
please say
Answer:
[tex] \boxed{ \text{below \: in \: bold}}[/tex]
Explanation:
[tex] \huge{ \underline{{ \text{Ecosystem}}}}[/tex]
No living beings can survive alone. There always exists a close relationship between living and non - living things. The environment of the earth consists of physical and biological factors. The physical and biological factors together constitute an ecosystem. The ecosystem may be natural or artificial , temporary or permanent. Thus, an ecosystem is an ecological unit which consists of both biotic ( living ) and abiotic ( non - living ) factors of the environment. The organisms and the environment are inseparably interrelated and interactive in their nature. A.G. Tansley ( 1935 ) , a British ecologist used the term ecosystem first.
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A tree growing on a cliff is slowly growing its roots into the rocks and causing it to crack. What is this an example of? Why?
(28 Points)
Answer:
because the tree is merged into the cliff, so its because of erosion
Explanation:
what is a monera? Give me explanations
Answer/Explanation:
Monera is an outdated/old-fashioned classification that describes a kingdom of prokaryotic organisms. Nowadays, we split prokaryotic organisms into two kingdoms: bacteria and archaea.
Monera describes organisms that do not contain a true nucleus, including all species of bacteria, archaebacteria, and some cyanobacteria. It does not contain eukaryotic single celled organisms like fungi or protists.
Answer:
Monera is a kingdom that contains unicellular organisms with a prokaryotic cell organization, such as bacteria. They are single-celled organisms with no true nuclear membrane. The taxon Monera was first proposed as a phylum by Ernst Haeckel in 1866
Explanation:
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moon phase that is half light and half dark
Answer:
Because a half of the half illuminated Moon can be seen, this is referred to as a "quarter Moon". When the Moon is waxing and reaches this position, it's called the "first quarter Moon"; when waning, the "third quarter Moon."
Orbits: Earth
Explanation:
Answer:
First Quarter Moon
Explanation:....
WHAT IS THIS PLEASE HELP? correct answer please don’t guess. !
Answer:Its the third
Explanation:
Carbon dioxide is formed when two oxygen atoms chemically combine with a carbon atom which term best describes carbon dioxide?
A Mixture
B atoms
C elements
D compound
Answer:
It's a compound
Explanation:
A compound is two or more elements joined together. The fact that two oxygen particles and a carbon particle is joined together means it's a compound.
What is the effect of the angle of the Sun on the insolation an area receives?
Answer:The sun angle at a place varies over the course of the year as a result of the constant tilt and parallelism of the earth's axis. As the sun angle decreases, light is spread over a larger area and decreases in intensity (energy input per unit area)
Explanation:
Animals, forests, grasslands, and trees all belong to which sphere? Atmosphere Atmosphere Hydrosphere Hydrosphere Lithosphere Lithosphere Biosphere
Which of the following is not part of the scientific process?
A. making predictions
B. asking questions
C. using creative insight
D. proving theories are true
Answer:
The correct answer is C- using creative insight
Which of the following is most likely associated with population of an organism?
A. A series of severe weather events in the habitat
B. A reduction in the necessary resources available
C. An expansion of adequate living space
D. An increase in animals that hunt the organism
A forest was completely destroyed by a volcanic eruption. All living organisms were killed. Then, due to the arrival of propagules carried by birds from nearby areas, certain plant species started growing in the forest. These species have started colonizing the forest because they could survive the harsh conditions of the forest. They also facilitated the growth of other species. What stage of succession is taking place in the forest?
Answer:
a
Explanation:
competition
Answer:
Ecesis
Explanation:
I got 5/5 and answered that on plato
The milk sugar, lactose, is made up of glucose and galactose. Why type of carbohydrate is lactose?
Answer:
disaccharide
Explanation:
What is the antebrachial?
Answer:
the area of the upper limb between elbow and hand
Please help it’s times I’ll mark you brainliest
Answer:
Peptin
Explanation:
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You run 30 PCR cycles using primers that amplify a tandem repeat (let's call it D3T40) on Chromosome 3. Choose all of the statements below that are correct. A. The number of repeats at the D3T40 locus will vary among individuals.B. The size of an individual's amplicons is determined by the number of repeats at the D3T40 locus.C. The primers will anneal to the sequences that flank the D3T40 locus.D. Taq polymerase will amplify the entire length of Chromosome 3.E. About 30 amplicons will be produced at the end of 30 cycles of PCR.F. You can determine the size of an individuals D3T40 amplicons using gel electrophoresis.G. The size of the amplicons produced will vary among individuals.H. The primers used to amplify D3T40 could be used to amplify another locus like the D1S80 locus on Chromosome 1.
Answer:
A b c f and g are true
Explanation:
A is true because when we have different individuals we can observe dna polymorphism.
B is true because the size of the amplicon is determined by the treat count of D3T40 locus
C. Is true because polymorphic sequence are actually flanked by primers
D is false
E is false
G is true
F is false
The statements below that are correct include:
A. The number of repeats at the D3T40 locus will vary among individuals.
B. The size of an individual's amplicons is determined by the number of repeats at the D3T40 locus.
C. The primers will anneal to the sequences that flank the D3T40 locus.
PCR.
F. You can determine the size of an individuals D3T40 amplicons using gel electrophoresis.
G. The size of the amplicons produced will vary among individuals.
It should be noted that DNA polymorphism can be observed among different individuals. Therefore, the number of repeats at the D3T40 locus will vary among individuals.
Also, the amplicon size depends on the number of repeats. Hence, the size of an individual's amplicons is determined by the number of repeats at the D3T40 locus.
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Which statement is true concerning visible light and the
electromagnetic spectrum?
All electromagnetic radiation is considered to be
visible
b
Visible light is not part of the electromagnetic
spectrum
Visible light is a large portion of the
electromagnetic spectrum
d
Visible light is a small portion of the
electromagnetic spectrum,
Answer: D
Explanation: visible light makes up only a very very, very small portion of the entire electromagnetic spectrum
The true statement concerning visible light and electromagnetic radiation is considered to be - d. Visible light is a small portion of the electromagnetic spectrum.
The electromagnetic spectrum is the range of frequencies of electromagnetic waves or radiations. This spectrum also gives an idea about the wavelengths of electromagnetic radiations. The part of the spectrum on their higher to lower energy or frequency range from [tex]10^{4}[/tex] Hz to [tex]10^{18}[/tex] Hz are:
gamma raysX-raysultraviolet radiationvisible lightinfrared radiationradio waves.The visible light is the very small part of the electromagnetic spectrum that ranges from the [tex]400*10^{14} Hz[/tex] to [tex]800*10^{14} Hz[/tex], Visible light is the light that the human eye can see.
Thus, the correct answer is- option d.
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what is the size of an eukaryotic ribosome ?
Answer:
The molecular mass of a eukaryotic ribosome is ~3.2×106 Daltons.
The diameter of a eukaryotic ribosome is ~250–300 Å. Å, or angstroms, standing for one hundred-millionth of a centimeter.
Which two phrases describe a situation that will cause a stationary object to start moving?
A. a net force greater than 0
B. unbalanced forces
C. a net force equal to 0
D. balanced forces
Answer:
A .a net force greater than zero
B. Unbalanced Force
Explanation:
A .When the resultant force on an object is zero, it will remain at rest if it is at rest, or continue to move in a straight line at a constant velocity if it is in motion. So , the answer will be a net force greater than zero .
B . An unbalanced force (net force) acting on an object changes its speed and/or direction of motion. An unbalanced force is an unopposed force that causes a change in motion. A net force = unbalanced force. So , the answer will be unbalanced forces .
Natural selection is the process by which biological traits either become more or less
apparent within a population. There are certain conditions which are the basis for natural
selection. Which of the following examples best represents the adaptation of a species to its
environment.
A. Some members of a garter snake species are resistant to a toxin produced by one of its food sources and will successfully
reproduce and pass the resistant trait on to their offspring
B. species of crab is living and reproducing successfully near hot hydrothermal vents at the bottom of the Pacific Ocean,
while other crab species are unable to survive there.
C. Male Birds of Paradise inherit brilliant colors which they displayed in elaborate poses or dances in order to catch the
attention of a female mate.
D. Female Loggerhead turtles lay about 100 eggs, which when hatched produce offspring that must make a mad dash to the
ocean before being eaten by predatory sea birds.
Answer: B. species of crab is living and reproducing successfully near hot hydrothermal vents at the bottom of the Pacific Ocean, while other crab species are unable to survive there.
Explanation: This species of crab adapted to their given habitat, while other couldn’t.
Answer:
B. species of crab is living and reproducing successfully near hot hydrothermal vents at the bottom of the Pacific Ocean, while other crab species are unable to survive there.
Consider a scenario where a person eats a cupcake composed of glucose molecules. The person has digested the cupcake, and the glucose has been absorbed into the bloodstream. Based on this information and your knowledge about biology, select true or false for each of the following statements.
a. Some of the energy stored in glucose will eventually be transformed into heat.
b. Carbon atoms from glucose could be exhaled by the person as carbon dioxide.
c. Carbon atoms from glucose could later be found in a plant cell.
d. Carbon atoms from glucose could be converted into oxygen during metabolism.
Answer: a.b.c-true.
d-false.
a. Some of the energy stored in glucose will eventually be transformed into heat.
This is through the process of Glycolysis (and Krebs's cycle )where the Carbon atoms in the glucose(substrate level phosphorylation) undergo metabolism with the liberation of ATPs as heat during metabolisms. The glucose serves as the substrate for the generation of heat.However,largest amount of ATP's is expended as heat during oxidative phosphorylation,due to the glucose used as substrate in preceding stages of glycolysis and Kreb Cycle.
b. Carbon atoms from glucose could be exhaled by the person as carbon dioxide.
Yes, this is through glycoylsis and kreb's Cycle where CO2 is given off as during metabolisms as one compound change from one form to another.E.g from Citric acid(6C) to Succinate(5C),some Carbon atoms are lost as C02. Like during glycolysis.
C. Carbon atoms from glucose could later be found in a plant cell.Yes this is because the CO2 expired by human could be trapped by green plants and react with water in the presence of sunlight trapped by chlorophyll to form carbohydrate in plants.This is photosynthesis.
Explanation:
Carbon can't not be converted to oxygen,big FALSE.
Match each description to the correct step. Metaphase 11 Nuclear membranes form around each set of chromosomes. Prophase 11 Chromosomes line up in the middle of the cell Telophase 11 DNA condenses to form chromosomes. Anaphase 11 Each chromosome separates and moves to opposite ends of the cell.
Plz Hurry
Answer:
Metaphase ⇒ Chromosomes line up in the middle of the cell
Prophase ⇒ DNA condenses to form chromosomes
Anaphase ⇒ Each chromosome separates and moves to opposite ends of the cell
Telophase ⇒ Nuclear membranes form around each set of chromosomes
There are twenty amino acids in living organisms. Ten of these are referred to as essential amino acids. Why are they called essential amino acids?
These amino acids are the only ones that are important for the body to function properly.
These amino acids cannot be made by the human body and must be consumed in one’s diet.
These amino acids are the only ones that are made by the human body.
.
2nd one
Explanation:
these amino acids cannot be made by the human body and must be consumed in one's diet
they can be synthesized in sufficient quantities in the body.
which could describe the properties of sedimentary rock?
Answer:
Sedimentary rocks contain rounded grains in layers. The oldest layers are at the bottom and the youngest layers are at the top. Sedimentary rocks may contain fossils of animals and plants trapped in the sediments as the rock was formed.
Explanation:
Sedimentary rocks are formed by the accumulation and lithification of sediment, which can include sand, mud, and organic matter.
What are sedimentary rocks?Sedimentary rocks are a type of rock that is formed by the accumulation and lithification of sediment, such as sand, mud, and organic matter. They often have layers, or strata, and may contain fossils and other clues about the environment in which they were formed.
They typically have the following characteristics:
Stratification: Sedimentary rocks often have distinct layers, or strata, which can indicate the environment in which they were formed and the sequence of events that occurred during their formation.Learn more about sedimentary rock, here:
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what is it called when Energy is required to move materials across the cell membrane because they are moving from an area of low concentration to an area of high concentration?
What are the types of organs in the urinary system
Answer:
kidneys, renal pelvis, ureters, bladder and urethra.
Explanation: