Answer:
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Which of these organelles is found in plant cells but not in animal cells
Answer:
option d
central vacuole
Answer:
Animal cells do not have a central vacuole. Central Vacuole is used to store water and maintain turgor pressure in plant cells. Hope it helps!
What is the percent by mass water in calcium chloride hexahydrate?
Answer:
the answer is 3%
It would be 3%.
Hope this helps!!
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Describe the genetic code and its relationship to polypeptides and proteins
The genetic code is directly related to polypeptides and proteins in the sense that genes are decoded to synthesize proteins.
What is the genetic code?Genetic code is the set of rules by which the sequence of bases in DNA are translated into the amino acid sequence of proteins.
The genetic code is unique for living organisms and is used to synthesize the proteins that is responsible for various activities in living organisms.
The genes in the genetic code are first transcribed into mRNA, which is then translated into proteins (polypeptides).
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what characterizes an organism
Answer:
movement, reproduction, Growth sensitivity,
Explanation:
these are all things that could be different about an organism which could make them different,
Answer:
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Explanation:
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Rachel Carson warned of the danger of increased use of pesticides.
true false
Answer:
True
Explanation:
Carson's 1962 bestseller first warned the public about the devastating effects of chemical pesticides—and started a revolution. Carson's 1962 bestseller first warned the public about the devastating effects of chemical pesticides—and started a revolution.
Answer: true
Explanation:
What is a hypothesis?
A. an educated explanation for the set of observations
B. an organized way of recording data
C. the results of an experiment
Udens
Answer:
A.
Explanation:
The other options don't make sense.
Answer:
A.) an educated explanation for the set of observations
Explanation:
Hypotheses are testable statements. People then conduct experiments or studies to collect information that either proves or disproves the hypothesis.
A(n) ________ may be used to outline structures of the urinary system, including any stones larger than 2 mm.
A kidney, ureter and bladder (KUB) may be used to outline the structure of a urinary system, including any stone that is larger than 2 millimeters.
What is a urinary system?A urinary system can be defined as a living system that is saddled with the responsibility of removing excess and unwanted waste fluids from the body of a living organism, so as to prevent damage to the body and help maintain homeostasis.
In Medicine, a kidney, ureter and bladder (KUB) may be used by a urologist to outline the structure of a urinary system, including any stone that is larger than 2 millimeters.
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There are four layers of cells in the epidermis of thin skin. From superficial to deep, these layers are stratum ______, stratum ______, stratum ______, and stratum basale.
There are four layers of cells in the epidermis of thin skin. From superficial to deep, these layers are stratum corneum, stratum granulosum, stratum spinosum, and stratum basale.
What is the main function of the Epidermis?The main role of the epidermis is to shield your body from harm, or injury, UV radiation, pathogen invasion, and chemical infections.
The considerable superficial part of the epidermis is comprehended as the stratum corneum, while the most profound part of the epidermis is understood as the stratum basale.
Therefore, it is well described above.
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Which statement best describes ecological succession?
It is always caused by human intervention.
It occurs after disturbance
It never occurs in a predictable pattern.
It is a series of rapid changes in an ecosystem.
What is data ?
A. a numerical value to represent how accurate
the recordings of an experiment are
B. detailed recordings of experimental
observations
Umak
C. only non-numerical observation from an
experiment
Answer:
B
Explanation:
The definition for 'Data' is facts and statistics collected together for reference or analysis.
So I would answer B as this seems the most appropriate
The data is the detailed recordings of experimental observations. The correct option is B.
What is experimental observations?Because of the physical insight they provide to the scientist in formulating the theory, experimental observations and measurements are widely accepted to be the backbone of physical sciences and engineering.
Observational studies are those in which researchers examine the impact of a risk factor, diagnostic test, treatment, or other intervention without attempting to change who is or is not exposed to it.
Observational studies are classified into two types: cohort studies and case control studies.
Experiments or surveys are used to collect data for statistical studies. The branch of statistics that deals with the design and analysis of experiments is known as experimental design.
Thus, the correct option is B.
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What is the most likely result of the chemical reaction represented by this equation?
Answer:
the substances formed as result of chemical reaction are products
Explanation:
chemical reaction the atoms and the molecules produced by the reaction are called projects in a chemical reaction on the atoms present in the 10th and the up the production of new atoms are created them know and terms are destroyed
sunflower follows the direction of the sun until they reach the age of maturity. why?
Continuously facing towards the east also helps the flowers to heat up quickly. This gives them an advantage in pollination, as warm flowers attract insects. Therefore, in the plant's interest, the flower always faces the sun and is therefore always clearly visible to these important pollinators.
This property of facing the sun is mostly observed in young flowerheads and generally stops once the flower starts to mature. The phenomenon of flowers following the sun across the sky is called heliotropism.
Why do sunflowers face the sun?The obvious reason for the flower following the sun would be to maximize photosynthesis.
Each sunflower plant has only one flower on its stem. Therefore, during pollination, the plant’s only means of reproducing must get noticed by pollinators. [A pollinator is anything that helps carry pollen from the male part of the flower to the female part of the same or another flower. The movement of pollen must occur for the plant to become fertilized and produce fruits, seeds, and young plants.] Continuously facing towards the east also helps the flowers to heat up quickly.
This gives them an advantage in pollination, as warm flowers attract insects. Therefore, in the plant’s interest, the flower always faces the sun and is therefore always clearly visible to these important pollinators.
When researchers compared mature flowers facing east with flowers that they had turned to face west, they made a remarkable observation. East-facing blooms attracted five times as many pollinating insects as west-facing ones. Sunflower has a clear advantage in terms of reproduction if it faces the sun.
Why a mature sunflower does not track the sun?- It is mainly young flower heads that exhibit this characteristic of heliotropism because younger flowers have green “bracts” that look like a mane.
- As sunflowers mature, this process comes to a halt. Overall growth slows, and the flower's circadian clock reacts most intensely to the sun's early morning rays than those later in the day. As a result, the blooms gradually stop tracking westward altogether.
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After absorption, long-chain fatty acids and monoglycerides inside intestinal cells are:
After absorption, long-chain fatty acids and monoglycerides inside intestinal cells are reformed into triglycerides.
What are triglycerides?Triglycerides are lipids in the body composed of three fatty acids and one glycerol molecule.
Triglycerides are a fundamental lipid in the blood and they serve as a source of high-level energy.
In conclusion, after absorption, long-chain fatty acids and monoglycerides inside intestinal cells are reformed into triglycerides.
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Match the following terms and definitions.
1. an animal without a body cavity ----------------> acoelomate
2. development of an apparent head end of an animal--------->coelomate
3. flagellated cell lining the inside of a sponge------------> choanocyte
4. an animal with a fluid-filled body cavity that lies within the mesoderm
----------------- ectoderm
5. organisms that form by radial cleavage and develop an anus from the first indentation of the gastrula stage of embryonic development; includes echinoderms, chordates, and vertebrates ---------------->cephalization
6. "outer skin"; layer of cells that develop on the outside of the embryo -------------deuterostomes
Coelomates are, therefore, animals that have a cavity completely lined by mesoderm.
1. acoelomate
2 cephalization
3 choanocyte
4 coelomate
5 deuterstomes
6 ectoderm.
What are the characteristics of these animals?1. an animal without a body cavity: acoelomate
2. development of an apparent head of a :cephalization
3. flagellated cell that lines the inside of a sponge: choanocyte
4. an animal with a fluid-filled body cavity that lies within the mesoderm: coelomate animal
5. organisms that form by radial cleavage and develop an anus from the first indentation of the gastrula stage of embryonic development; includes echinoderms, chordates, and vertebrates: deuterostomes
6. "outer skin"; layer of cells that develop on the outside of the embryo:ectoderm
With this information, we can conclude that Coelomates are, therefore, animals that have a cavity completely lined by mesoderm.
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1) Acoelomate
2) Cephalization
3) Choanocyte
4) Coelomate
5) Deuterostomes
6) Ectoderm
what are pollination and fertilization?
Females who lift weights are not going to develop large, bulky muscles because __________.
Females who lift weights are not going to develop large, bulky muscles because they have lower testosterone levels than men.
What is testosterone?Testosterone is defined as the main sex hormone of the males that are produced in the testicles.
The functions of Testosterone include
bone mass, fat distribution, muscle mass and strength, and the production of red blood cells and sperm.This hormone is produced in small quantities in females therefore, females who lift weights are not going to develop large, bulky muscles.
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The scientist responsible for disproving the theory of spontaneous generation:
Answer:
Francesco Redi
Explanation:
Italian physicists disproved the theory of spontaneous generation by observing the relations between maggots and fly eggs on meat.
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Louis PasteurWho is Louis Pasteur?
Tap the pic aboveHope it helps
experiment in how to destarch the plant for photosynthesis
Answer:
all plants have starch in their green leaves so before we use the photo status experiment the intestinal stars present in it leave must be removed their for the plant must be discharge by keeping plant incompletely dark room for at least 3 days
1. The graph to the right shows the interaction of the wolf and moose populations on Isle
Pelkie. If the moose population continues to increase, the wolves' food supply will increase
What will most likely happen to the wolf population as a result?
(DOK-3) (0.5 M)
a.
b.
C.
d.
Population (in hundreds)
60
89 88 9
50
40-
30
20
10
Moose
Wolves
1960 1965 1970 1975 1980 1985 1990 1995
Year
Wolf population will decrease.
Wolf population will increase.
Wolf population will remain the same.
Moose population increases.
The graph is indicating the wolf population has reached the phase where the number of population will remain same. The correct option is C.
What is population?A population is the number of people who live in the same location.
The graph is indicating the wolf population has reached the phase where the number of population will remain same.
Thus, the correct option is C.
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for each phenotype, list the genotypes (Remember to use the letter of the dominant trait)
* Straight hair is dominant to curly:
_____Straight
_____Straight
_____Curly
*Tail spikes are dominant to plain tails:
_____pointed
_____pointed
_____round
The smallest contractile unit within skeletal muscle would correspond to the distance between which two points in the figure?
The distance between 1 and 7 spans a sarcomere correspond the structure at B is covered by the perimysium.
What is the smallest contractile unit within skeletal muscle?A sarcomere comprises the segment between two consecutive Z lines and is the contractile unit of the muscle fiber, as it is the smallest portion of the muscle fiber capable of contraction and distension.
In this case, the distance between points 1 and 7 has the smallest structure of a skeletal muscle and corresponds to figure B.
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what has caused a 90 ecrease in southern california steelhead run sizes?
Answer:
The cause of the 90 decreases in southern California steelhead run sizes are because of the dams along the water sources and it has cause 90% decrease in the southern California steelhead run sizes. The Dam alter aquatic ecology cause the river hydrology up steam and down steam which cause the affecting water quality.
The reason why the Southern California steelhead run sizes has decreased by 90% is the construction of dams along water sources.
What is a dam?The dam is a large structure that serves the purpose of holding back water and making its level to rise quite high. Dams could be used for the purpose of electricity generation.
The reason why the Southern California steelhead run sizes has decreased by 90% is the construction of dams along water sources.
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Which would cause postsynaptic stimulation to end?.
Options:
A. They depend on the myelination of nerve axons
B. They include EPSPs and IPSPs
C. They are changes in the membrane potential of the postsynaptic terminal of a chemical synapse
D. They are caused by neurotransmitters
Answer:
They include EPSPs and IPSPsThey are changes in the membrane potential of the postsynaptic terminal of a chemical synapseThey are caused by neurotransmitters. Thus, the correct option is B, C, D.What is postsynaptic stimulation?An additional neuron known as a fascilitator is triggered when the postsynaptic neuron receives an unconditioned stimulation. The presynaptic neuron then responds to this cell, leading to sensitization.
When the neurotransmitter separates from its receptor, postsynaptic potentials start to be terminated. After that, the receptor is free to resume its original structural form. The receptor will now reopen ion channels that were opened when the neurotransmitter was attached to it.
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is it important to build cities by cutting down all the trees and clearing the forest for the country?
Answer:
At one instance when polution is at its peak we can think that it is not right to cut trees to build cities and factories
but at the same time there are so many peoples .where they will live if there were no cities as people usually migrate from village to city for job and employment.
What is dynamic instability and why is it
necessary?
Dynamic instability helps is the frequent growth and shrinkage of microtubules at a constant rate and it helps in the organization of microtubules into arrays.
What is dynamic instability?Dynamic instability refers to the constant growth and shrinkage of microtubules at a constant rate.
Dynamic instability is important as it plays an important role in the cell cell cycle.
Dynamic instability helps in the organization of microtubules into arrays which are found throughout the cell cycle.
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Hemophilia is an X-linked recessive disorder (Xh) that is passed through generations and can be traced by using a pedigree.
Charles is a blank box with a Upper X Upper H Upper Y genotype and Marie is a half-filled circle with a X Upper H x h genotype.
What is the probability that a female child of Charles and Marie would suffer from hemophilia?
0 percent
25 percent
50 percent
100 percent
The probability that a female child of Charles and Marie would suffer from hemophilia is 0 percent.
What are X-linked diseases?X-linked diseases are diseases whichabre found only on the X chromosomes.
Hemophilia is an X-linked recessive disorder (Xh)
Charles is has the normal X chromosome YXH
Marie is a carrier of the disease XHXh
A cross between YXH and XHXh will not produce any XhXh.
Therefore, the probability that a female child of Charles and Marie would suffer from hemophilia is 0 percent.
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The initial period of population growth for a species in an environment is _______. a. linear b. exponential c. slow d. negative Please select the best answer from the choices provided A B C D
Answer:
b
Explanation:
Initial period of population growth is most likely to be exponential and then slowly reach a point of "equilibrium" where the population is stable. Meaning the death and the birth are balancing it out.
Answer:
b. exponential
Explanation:
what type of competition is evident amongst the squirrels
Answer:
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The most common use of radioactive isotopes in medicine is to diagnose disease. Typically, radioactive materials are injected into the body and then radiation-detecting cameras are used to build images of affected body parts or particular types of cells. This equation models the amount of a radioactive isotope in the bloodstream minutes after it is injected:
Radioactive substances are employed in therapy to destroy malignant tissue, shrink a tumor, or lessen discomfort.
What is the radioactive elements?Two or more chemical species of an element with varying atomic masses and unstable nuclei are referred to as radioactive isotopes. Because of the excess radiation that these isotopes produce in the form of alpha, beta, and gamma rays.
Nuclear medicine treatments use a tiny amount of radioactive substance called a radiopharmaceutical to assist diagnose and cure disorders. To identify disorders, some radiopharmaceuticals are utilized in conjunction with imaging technology. To reduce or eliminate a cancerous tumor, radiopharmaceuticals can also be injected close to the tumor inside the body.
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Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. Which structure or structures produce substances most likely to affect the development of these traits?
testes
ovaries
prostate gland
vulva
Answer:
testes
Explanation:
The increased secretion of testosterone from the testes during puberty causes the male secondary sexual characteristics to be manifested. In males, testosterone directly increases size and mass of muscles, vocal cords, and bones, deepening the voice, and changing the shape of the face and skeleton.
Answer:
testes
Explanation:
Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics and their developments are affected by testes
