Answer:
The mitotic spindles formed during prophase are composed of microtubules and have a ropelike structure. The function of the mitotic spindle is to help to equally divide the chromosomes in the parent cell to ensure that equal, identical copies are found in both daughter cells after mitosis is complete.
Explanation:
Select the correct answer.
How does chemistry support agriscience?
by helping develop pesticides and fertilizers
by competing with biologists for grants
by providing more information about plants
OB.
OC.
O D. by exploring the role of ecosystems
Chemistry support Agricultural sciences by helping develop pesticides and fertilizers.
Agricultural sciences, which deal with the processing and production of food and fiber. They cover techniques for cultivating soil, growing and harvesting crops, raising animals, and preparing plant and animal products for use and consumption by humans.
Food is a human being's fundamental necessity. Only agriculture is able to provide this need for the entire world's population. Plants are referred to as producers because they use CO2 from the air and water from the soil to create their own food through a process known as photosynthesis, which also uses sunlight as an energy source. The only other members of the food chain are consumers. Agriculture is the activity of raising crops and cattle using the earth's natural resources. Agronomy, horticulture, animal husbandry, dairying, soil chemistry, and other fields of modern agriculture are included.
Agriculture deals with the generation of organic goods using both organic and inorganic inputs, whereas chemistry works with molecules, both organic and inorganic. Thus, from the molecular to the organ level, chemistry is a fundamental component of agriculture. It has an impact on everything from the fundamentals of photosynthesis to how agricultural products are used. The improvements in this method are solely attributable to chemistry research that is currently being done and applied to make the land produce more abundantly while also protecting it from abuse and deterioration.
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B
What is
equilibrium?
When the concentration of solutes is equal
on both sides
When the concentration of solutes is
different on both sides
Answer:
when the concentration of solutes is equal on both sides.
*Note: "equi" is similar to equal
Describe 2 distinguishing features of animal cell
Answer:
An animal cell is usually irregular and round in shape.
Explanation:
This is primarily due to the absence of the cell wall, which is a characteristic feature of plant cells. Furthermore, animal cells do not have plastids as animals are not autotrophs.
It is your first time eating at Subway in the Student Union. Shortly after eating a ham sub, you become very sick. You swear that you will never eat there again. A few weeks later, you enter your dorm, and your roommate offers you some ham and cheese crackers. You cringe at the smell of the ham. Identity the unconditioned stimulus (US), conditioned stimulus (CS), unconditioned response (UR) and conditioned response (UR)
This kind of a question is based on classical conditioning.
The unconditioned stimulus is the fact that you got sick after eating the food. This is something that is involuntary. It produces an automatic response.
The conditioned stimulus is the decision that you took. You made the decision that you won't be having the same food again based on the fact that you got sick by eating there. This is a conditioned stimulus.
Weeks later, you cringe at the smell of ham. This is an unconditioned response, because it is an automatic response or a response that occurs without thought when an unconditioned stimulus is present.
The fact that you don't eat the ham they offered based on the past experience is a learned response, which is again called a conditioned response.
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Explain how oxygen passes from the blood to part A
Oxygen passes from the blood to part A which is the blood vessel known as capillaries through diffusion.
What is Diffusion?
This is referred to as the movement of molecules from a region of higher concentration to a region of lower concentration and occurs in states of matter such as liquids and gas which are classified under fluids.
This type of transport occurs in the cells of living organisms and is aided by the blood vessels such as capillaries.They ensure that the different parts of the body have adequate supply of oxygen and nutrients for their survival and proper functioning.
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true of false : factors like an organism’s habitat conditions and behavior can affect variation within a population .
Snakes have traces of leglike structures that are not used for movement. Which inference is supported by this fact? Why?
A. Snakes do not have ancestors.
B. Snakes are an example of transitional fossils.
C. Snakes share a common ancestor with animals that have legs.
D. Snakes and animals that have legs are part of the same species.
Answer:
B
Explanation:
Because a transitional fossil any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group.
Identify 2 reasons why more vehicles do not use hydrogen fuel.
Answer:
Storage of hydrogen fuel cells is much more complicated and expensive than other fuel types. This adds to the overall costs of products and raises prices for automakers. The fuel cell can be dangerous due to its highly flammable nature.
Explanation:
A 10 mM salt solution is _________ to a 500 mM salt solution.
Answer:
A 10 mM salt solution is 100 to a 500 mM salt solution
what did he call the single-cell organisms he observed moving through his microscope
Answer:
What van Leeuwenhoek saw with these microscopes was bacteria and protozoa, but he called these tiny creatures “animalcules.” Van Leeuwenhoek became fascinated. He went on to be the first to observe and describe spermatozoa in 1677.
Explanation:
What
happens to the fat
you "burn off"
during exercise?
How does food
make us gain
weight?
Answer:
by working out and it expands out stomach
Explanation:
This zig-zag shaped chains on this molecule are know as?
Answer: Bond-Line
Explanation:
Choose the hypothesis for the controlled experiment that answers the question:
“How does a virus spread?”
A virus is not contagious.
A virus is similar to a bacterium.
A virus is dangerous if you get it.
A virus is spread through contact on surfaces.
Answer:
D, the basic knowledge of how a virus spread is from human-to-human, surfaces like doorknobs or items, and not sneezing into your arm.
Explanation:
ģ
&
III
Which process has most likely occurred when new traits appear in a species?
O
selective breeding
genetic mutation
crossbreeding
O cloning
Heritable variations (genetic variation) between organisms are caused by new or altered features that are produced as a result of gene mutations.
Describe heredity.
The total of all biological processes through which certain traits are passed from one set of parents to the next is known as heredity.
When heritable differences in a population increase in frequency, either non-randomly through natural selection or randomly through genetic drift, evolution has taken place.
The genetic heritage which our biological parents have left behind is knowns to as heredity. That's why we resemble them. In deeper, it refers to the passing down of traits from one generation to the other. These characteristics can be behavioral or physical, such as eye color, blood type, or an illness. For instance, honeybees' hygienic behavior, which motivates them to remove unhealthy larvae from the nest, is a hereditary trait.
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How is vCJD different? Where does it originate from?
vCJD is stands for Variant Creutzfeld- Jakob Disease and it is originated from France and it was caused due to consumption of contaminated beef.
What is vCJD ?vCJD is stands for Variant Creutzfeld- Jakob Disease and it is originated from France and it was caused due to consumption of contaminated beef. The main reason which is responsible for vCJD is eating rotten beef and this will lead to cause vCJD.
Due to this reason the beef which was imported from Britain was banned in France and other European states.The most dangerous thing about CJD was that it passes from one generation to other generation due to mutation in gene.
Therefore,vCJD is stands for Variant Creutzfeld- Jakob Disease and it is originated from France and it was caused due to consumption of contaminated beef.
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Which kind of bond occurs when atoms transfer electrons and as a result are oppositely charged and bond together?
Hydrogen
Polar Covalant
Covalent
Ionic
Answer: ionic bond
Explanation: ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
anyone who get the correct answer will be mark as brainliest.
Which is the final electron acceptor in the electron transport chain of cellular respiration?
NADH
FADH2
oxygen
carbon dioxide
Answer:
It is none other than Oxygen.
Explanation:
Which of the following is (are) likely reasons for the migration of native species from an area?
I A new housing development clears a large forest.
II Individuals are separated from the rest of their population.
III A habitat has varied resources and different niches.
I only
I and II only
I and III only
II and III only
Answer:
I only
Explanation:
A new housing development clears a large forest.
II Individuals are separated from the rest of their population.
III A habitat has varied resources and different niches.
Proteins function to provide structure for tissues and organs. Which of the following are the building blocks of proteins?
Answer:
The answer is D.
Explanation:
Option A shows the structure of a lipid, option B shows the structure of a carbohydrate, and option C shows the structure of a nucleic acid. This leaves the only possible answer to be D.
I'm learning this in school too, it's difficult, I know. Good luck and study hard!
The top three organelles are______, ______ and _______ because they do _____________, ___________ and ___________
In a cell there are mainly 6 organelles: nucleus, mitochondria, chloroplasts, golgi apparatus, endoplasmic reticulum and ribosomes.
Out of these the top 3 cell organelles are nucleus, mitochondria and golgi apparatus because they are the source of all other cell components and they have crucial functions:
Nucleus: The storage of the DNA or the inherited material of the cell is one of the nucleus' two main jobs. It is in charge of organizing a variety of crucial cellular processes, including protein synthesis, cell division, growth, and a number of other crucial operations.
Golgi apparatus: Proteins obtained from the ER are further processed and sorted in the Golgi apparatus, or Golgi complex, where they are eventually transported to lysosomes, the plasma membrane, or secretion. As was already mentioned, the Golgi also produces sphingomyelin and glycolipids.
Mitochondria: The majority of the chemical energy required to drive a cell's metabolic operations is produced by mitochondria, which are membrane-bound cell organelles (mitochondrion, singular). Adenosine triphosphate, a tiny molecule, serves as a storage container for the chemical energy generated by the mitochondria.
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Help which of these multiple choices are correct?
Answer:
D
Explanation:
Halophilic archaebacteria (haloarchaea) thrive in environments with salt concentrations approaching saturation, such as natural brines, the Dead Sea, alkaline salt lakes and marine solar salterns; they have also been isolated from rock salt of great geological age (195–250 million years).
not described as haloarchea therefore not b
Archaebacteria are a group of microorganisms considered to be an ancient form of life that evolved separately from the bacteria and blue-green algae, and they are sometimes classified as a kingdom.
therefore d
A diagram of the solar system shows the sun in the middle. Why does every other object orbit around the sun?
• The sun is smaller than other objects in the solar system.
O The sun is an average size for a star.
O The sun is so bright.
O The sun is the most massive object in the solar system.
Every other object revolves around the Sun because the Sun is the most massive object in the Solar System. Therefore, the correct option is D.
The Sun's powerful gravitational pull causes every other object in the Solar System to revolve around it. The force that controls how celestial bodies move through space is called gravity. All the planets, moons, asteroids and comets in the Solar System are under the strong gravitational pull of the Sun due to their enormous mass.
As a result these objects are constantly pulled towards the Sun, due to which they revolve around it. As we know, the Solar System was formed by the interaction of the gravitational force of the Sun and the forward motion of these bodies, which keeps them in stable orbits.
Therefore, the correct option is D.
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Urgently!! I have test tomorrow!! I Need To Know!!
Which organelle is responsible for packaging and secreting/removing substances in a cell (Mail-room)?
Answer:
Golgi apparatus
Explanation:
responsible for transporting, modifying, and packaging proteins and lipids into vesicles for delivery to targeted destinations. As the secretory proteins move through the Golgi apparatus, a number of chemical modifications may transpire.
Describe saturation as characteristics of mediated transport mechanism
The three types of carrier-mediated transport are present facilitated diffusion, primary active transport, and secondary active transport which involve integral membrane proteins. Three characteristics are present in all kinds of carrier-mediated transport: saturation, stereospecificity, and competition.
The saturation is defined as the saturability of the carrier proteins which only have a finite number of solute binding sites.
Many binding sites be accessible at lower solute concentration concentrations, and as the concentration rises, so does the rate of transport. However, the number of accessible binding sites decreases and the rate of transport plateaus at high solute concentrations. Finally, saturation is attained at a point known as that of the transport maximum, or Tm, at which all of the binding are occupied.
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Urgently!! I have test tomorrow!! I Need To Know!!
Which organelle is responsible for storing food water and other materials (Waterhouse)?
Answer:
the vacuole
Explanation:
Answer:vacuole
Explanation:
vacuole are the storage unit of cell.
3. Study the diagram below and answer the question that follows. B 3.1 Provide labels for A, B, 1 and 2.
please help me
Explanation:
i think it's pancreas as it's look like..
1st will be duct of pancreaes
2nd duct of santori
b sphinter of oddi
a pancrease
According to Mendelian genetics, what phenotypic outcome do you expect
in the progeny when you cross a heterozygote (Aa) with a homozygous
dominant individual (AA)?
* 1 point
75% will have the dominant phenotype, 25% will have the recessive phenotype
will ha
25% will have the dominant phenotype, 75% will have the recessive phenotype
50% will have the dominant phenotype, 50% will have the recessive phenotype
All individuals will have the dominant phenotype
25% will have the dominant phenotype, and 75% will have the recessive phenotype.
When purebred or homozygous individuals that differ in a particular trait are mated, all offspring will be heterozygous for that trait. If the trait is inherited as dominant and recessive, all F1 offspring exhibit the same phenotype as the parent homozygous for the dominant trait. Monohybrid matings have a dominant to recessive phenotype ratio of 3:1.
In complete dominance, there is no phenotypic difference between AA and Aa individuals. In imperfect dominance, the phenotype of heterozygous individuals is clearly less intense than that of homozygous individuals for the dominant allele, such that the AA and Aa genotypes produce different phenotypes. A cross of two F1 hybrids that are heterozygous for a single trait that exhibits imperfect dominance.
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In the defense mechanism known as _____, the ego refuses to acknowledge anxiety-producing realities.
In the defense mechanism known as the denial mechanism, the ego refuses to acknowledge anxiety-producing realities.
What is the denial defense mechanism?The denial defense mechanism can be defined as an unconscious mechanism by which a person may ignore the fasts in the real world in order to avoid excessive levels of stress that may be harmful to his / her health and being, therefore, a part of a defensive strategy from external stimuli.
In conclusion, in the defense mechanism known as the denial mechanism, the ego refuses to acknowledge anxiety-producing realities.
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Select the correct answer.
How does air pollution impact crops?
OA.
О в.
O C.
O D.
Air pollution has no impact on crops.
Air pollution causes plants to produce less.
Air pollution kills many types of plants.
Air pollution takes nutrients from the soil.
What are the best, most accurate description for “agonal respirations”
The best, most accurate description for “agonal respirations” are abnormal breathing characterized by gasping process, myoclonus and grunting.
What is agonal respiration?
Agonal respiration is a form of abnormal breathing that originate from the brain stem which is a part of autonomic nervous system and it is characterized by a gasping process that lead to labored breath when the body is in too much stress or distress.
Therefore, The best, most accurate description for “agonal respirations” are abnormal breathing characterized by gasping process, myoclonus and grunting.
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