Answer:
Sodium
Explanation:
because ions have a charge which prevents them from moving across the cell membrane through simple diffusion
1. What is an example of an illness that requires airborne precautions?
Answer:
measles
Explanation:
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:....
Please help it’s times I’ll mark you brainliest
Answer:
Peptin
Explanation:
Explain how capillary action is really just teamwork between adhesion and cohesion
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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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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The ranges of the Eastern meadowlark (Sturnella magna) and the Western
meadowlark (Sturnella neglecta) overlap. To the untrained eye, these species
look nearly identical. However, they rarely breed with each other because they
have very different songs. Which of the following terms applies to these
species?
A. Geographical isolation
B. Behavioral and geographical isolation
C. Behavioral isolation
O D. Temporal isolation
Answer: behavioral isolation
Explanation:
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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Identify the RNA bases that would pair up with the DNA sequence TGCACT
A. TGCACT
B. ACGTGA
C. UCGUGA
D. ACGUGA
RNA and DNA are two nucleic acids that differ in nitrogen bases. ACGUGA is the RNA base pair that will pair with TGCACT, of DNA. Thus, option D is correct.
What is complementary base pairing?The complementary base pairing has been defined as the pairing of the nucleotides with each other to form the RNA or DNA structures. The base pairs with each other through hydrogen bonding where the reaction occurs between the purines and pyrimidines.
The RNA and DNA structure differs as RNA is made of ribonucleic acid with four nitrogen bases, A, U, G, and C, whereas DNA is made of deoxyribonucleic acid with bases, A, T, G, and C. Both differ in sugar and one nitrogenous base.
According to Chargaff's base pairing rule the purines (adenine and guanine) pair with pyrimidines (cytosine, thymine, and uracil). A forms a double bond with T in DNA and U in RNA, and G forms triple bonds with C.
The given DNA sequence is: TGCACT
The RNA bases for the sequence will be: ACGUGA
Therefore, option D. ACGUGA is the complementary base pair.
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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 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?
10 POINS IM SUPOSED TO TURN THIS IN TODAY!!!
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Answer:
glucose <disaccharides <starch<protein
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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
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:
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13) A polar bear swims in the ocean and grabs a fish to eat. Which one of the following is true of the polar
bcar?
A) The polar bear is a carnivore that is a predator of fish.
B) The polar bear is an herbivore that is a predator of fish.
C) The polar bear is an herbivore that is prey to fish.
D) The polar bear is a carnivore that is prey to fish.
16) how would an increase in predators likely affect a given prey population ?
A) The growth rate would decrease.
B) The growth rate would increase
C) birth rates would exceed death rates
D) The population would remain unchanged
19) Which one of the following statements best defines the role of a scavenger in the environment?
A) A scavenger gets energy by eating the dead organisms it finds.
B) A scavenger gets energy by breaking down organic wastes.
C) A scavenger gets energy by absorbing sunlight and producing glucose.
D) A scavenger gets energy by hunting and killing its prey.
20) Which one of the following roles is most similar to the role of a scavenger in an ecosystem?
A) Decomposer
B) Producer
C) Parasite
D) Herbivore
21) A vulture swoops down and grabs a dead mouse that it later eats. What is the vulture's ecological niche in
this situation?
A) Predator
B) Decomposer
C) Producer
D) None of the above
22) A type of relationship in which two species live in close association for long periods is known as
A) competition
B) symbiosis.
C) opportunism.
D) cohabitation
Answer:
13 is A
16 is A
19 is B
20 is A
21 is A
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.
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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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.
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!!
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.
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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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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
Animals, forests, grasslands, and trees all belong to which sphere? Atmosphere Atmosphere Hydrosphere Hydrosphere Lithosphere Lithosphere Biosphere
QUESTION 1 (POLL)
We can feed more people with grain than with meat and would
take up less space on our planet to do all this.
SELECT AN ANSWER
True
False
This can not be measured
Answer:
True.
Explanation:
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
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:
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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What is the antebrachial?
Answer:
the area of the upper limb between elbow and hand
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: