.All cells share common traits that help scientists draw conclusions about the basic needs and functions of living organisms. What is the meaning of cell theory?
O proves that all cells have all the same structural parts
Ost
The connotation of the cell theory is that a cell is the structural and functional division of an organism. A cell is the smallest unit of all living entities. All living organisms whether it is plants or animals are constructed up of cells.
Who proposed the cell theory?The cell theory was proposed by a German botanist M.J Schleiden and a German zoologist T. Schwann.
The cell theory was further distilled in 1855 by German biologist R. Virchow. According to him, "All cells are arising from pre-existing cells."
Therefore, it is well described above.
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Select the correct text in the passage.
Which phrase indicates a limit to the scientific accuracy of the experiment?
For the study of a particular drug, Marcus proposes an experiment with a particular population. Approximately 200,000 people in the United States take this drug. He started out with a sample size of 300 people. First, he conducts research on the medical history of the people in his study. He collects the information using reliable sources. He decides to repeat the experiment using a larger sample size.
The phrase that indicates a limit to the scientific accuracy of the experiment is to repeat the experiment using a larger sample size.
What is Scientific accuracy?Scientific accuracy may be defined as the correctness of a single measurement that should be accomplished by scientists during their practical experiments.
The complete question is as follows:
the sample size of 300 people.research on the medical historycollects the information using reliable sourcesrepeat the experiment using a larger sample size.The sample size will always play an active role in research. It also has a big impact on the accuracy of a scientific study. A larger sample size gives the most accurate results as compared to small sample size.
Therefore, the correct option is D.
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Answer:
" a sample size of 300 people "
Hope this helps!
Explanation:
In the diagram, the arrow shows the movement of
electric charges through a wire connected to a battery.
Mark this and return
What causes the electric charges to flow from one end
of the battery to the other?
O a balance in electric potential
O a balance in resistance
O a difference in electric potential
O a difference in resistance
Save and Exit
Next
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O a difference in electric potential
What are some possible benefits and dangers if the DNA is used to create a mutant form of the organism?
Explanation:
The majority of mutations have neither negative nor positive effects on the organism in which they occur. These mutations are called neutral mutations. Examples include silent point mutations. They are neutral because they do not change the amino acids in the proteins they encode.
Many other mutations have no effect on the organism because they are repaired beforeprotein synthesis occurs. Cells have multiple repair mechanisms to fix mutations in DNA. One way DNA can be repaired is illustrated in Figure below. If a cell’s DNA is permanently damaged and cannot be repaired, the cell is likely to be prevented from dividing.
Which event is NOT part of the process of DNA replication?
1.Ribosomes are synthesized.
2.Hydrogen bonds are broken.
3.Nitrogenous base pairs are formed.
4.A double-stranded molecule unwinds.
Explanation:
1 cuz we don't need that ,we need all of them exept number 1
Answer:
1. (Ribosomes are synthesized)
Explanation:
Ribosomes are only involved in the translation of mRNA to proteins. During DNA replication DNA helicase unwind the DNA double-strand by breaking hydrogen bonds between the two strands. DNA polymerase then replicates each strands using nucleotides complimentary of the replicating strands.
The answers above is not my original answer, this question has already been answered previously by someone else, so all credit is given to Diatonic254.
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which component is released from the active site of an enzyme during a chemical reaction ?
Answer:
The Product
Explanation:
In a chemical reaction the enzyme plays an important role in catalyzing the reaction.
The enzyme has an active site on its structure to which a substrate can come and bind. The active site has a specific shape to which the substrate of complementary shape can come and bind. once the substrate is bound to the active site of the enzyme the reaction takes place and a product is formed. Once the product is formed, product is released from the active site and enzyme remains unchanged at the end of the reaction.
therefore answer is product that is released from the active site
Which process occurs in the cells of both self-feeders and other-feeders?
A. Food molecules are broken down and energy is released.
B. Inorganic substances are used to make organic compounds.
C. New inorganic and organic substances are created from energy.
D. Matter and energy are destroyed as food molecules are broken
down.
The correct option is (c)New inorganic and organic substances are created from energy in the process that occurs in the cells of both self-feeders and other-feeders.
What are Autotrophs(self-feeders) and heterotrophs(other-feeders)?Autotrophs (self-feeders) are organisms that synthesize the biological molecules necessary for life support and digest inorganic substances from their environment using an external energy source. This kind of nutrition is found in plants that prepare their food through photosynthesis.
An organism that consumes other species in a food chain is known as a heterotroph (other-feeders). Heterotrophs cannot transform inorganic materials into organic ones, in contrast to autotrophs. They have to rely on a source of organic carbon that was once a part of a living thing. Heterotrophs depend on autotrophs either directly or indirectly for nutrients and food energy. This kind of nourishment is present in parasites, bacteria, fungi, yeast, humans, and other animals.
Therefore, in the cells of self-feeders and other feeders new inorganic and organic substances are created from energy
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Answer: Its A-Food molecules are broken down and energy is released, it is not C.
Explanation: Both break down are break down food molecules when energy is released.
members of the _____ movement would be very concerned about the unequal exposure of members of a certain race to pollution.
Members of the environmental justice movement would be very concerned about the unequal exposure of members of a certain race to pollution.
What is the environmental justice movement?The environmental justice movement is a group aimed at removing all inequities associated with environmental pollution.
The environmental justice movement provided important hits in the conservation of communities for ecological issues.
In conclusion, members of the environmental justice movement would be very concerned about the unequal exposure of members of a certain race to pollution.
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what's the answer???
Answer:
D. Community C has a greater species population than Community B and A.
Explanation:
Community C total population: 98
Community B total population: 62
Community A total population: 24
Which+oxygen+delivery+system+most+reliably+delivers+a+high+(90%+or+greater)+concentration+of+inspired+oxygen+to+a+7-year-old+child?
The oxygen delivery system that most reliably delivers a high (90% or greater) concentration of inspired oxygen to a 7-year-old child is Nonrebreathing face mask.
What is oxygen delivery system?Oxygen delivery system refer to a system that is use to pass oxygen to a patient which cannot breath on his own.
Therefore, The oxygen delivery system that most reliably delivers a high (90% or greater) concentration of inspired oxygen to a 7-year-old child is Nonrebreathing face mask.
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glomerular capillaries and podocytes together form the:
According to the research, glomerular capillaries and podocytes together form the filtration membrane.
What is the filtration membrane?It is the filtration barrier of the renal corpuscle that consists of the endothelium of the glomerular capillaries, the podocytes, and prevents the passage of macromolecules mechanically and electrically.
Podocytes also keep the glomerular filtration barrier stable by removing proteins and immunoglobulins.
Therefore, we can conclude that according to the research, glomerular capillaries and podocytes together form the filtration membrane.
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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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When a fish swims from salt water into fresh water, its cells react by:
A. gaining water and swelling.
B. dividing to increase surface area.
C. fusing to decrease surface area.
D. losing water and shrinking.
When a fish swims from salt water into fresh water its cells react by losing water and shrinking. The correct option is D.
What is fresh water?Glaciers, lakes, reservoirs, ponds, rivers, streams, wetlands, and even groundwater contain fresh water.
These freshwater habitats cover less than 1% of the world's total surface area but are home to 10% of all known animals and up to 40% of all known fish species.
When a fish swims from salt water into fresh water its cells react by losing water and shrinking due to osmosis.
Thus, the correct option is D.
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A fish swims from salt water into fresh water, its cells react by gaining water and swelling. Thus, option "A" is correct.
What is osmosis?Osmosis is the movement of water through a semipermeable membrane from an area of low solute concentration to one of higher solute concentration to establish an equilibrium.
For example, The solutes are solids that dissolve in water and form ions, such as salts (NaCl) and sugars, these solutes are also found the cell’s cytoplasm.
Thus, option "A" is correct.
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Repair of coronary vessel is called:
The repair of the coronary vessel is called; Angioplasty
How do you repair a vessel?Coronary vessels or arteries are defined as the blood vessels that supply oxygen-rich blood to the heart muscle in order to keep it pumping.
Now when there is a damage to the coronary vessel, it is repaired by a procedure called Angioplasty. This procedure is used to open blocked coronary arteries caused by coronary artery disease.
Angioplasty restores blood flow to the heart muscle without open-heart surgery and can be done in an emergency setting such as a heart attack.
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Based on the food chain below, if a bald eagle acquires 50 kg of energy, how much energy did the zooplankton get from the phytoplankton?
phytoplankton zooplankton bivalves sea ducks bald eagle
500 kg
5,000 kg
50,000 kg
500,000 kg
50,000 x 0.10 = 5,000J energy did the zooplankton get from the phytoplankton. thus option B is correct.
What do you mean by food chain?In ecology, the food chain is the flow of substance and energy from one organism to another in the form of food.
A process cycle from producer to consumer to decomposer is referred to as a food chain.
Plants, herbivores, omnivores, and carnivores all exist. Beginning with plants, moving on to herbivorous insect, spiders, a small bird, a snake, a hawk, a fox, and a lion When a person passed away, a hyena would consume their body. When the hyena passed away, the body would disintegrate, becoming food for worms, and then become fertilizer for plants. so according to 10 percent rule, zooplankton get 5000 j of energy from phytoplanktons.
The food chain's cycle will then repeat itself time and time again.
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Answer:
C. 50,000 KG
Explanation:
edge 2022 :)
Question 20 of 25
Exponential population growth cannot continue when organisms begin to
O A. adapt
OB. reproduce
OC. compete
OD. mutate
what does the autonomic nervous system do ?
The autonomic nervous system controls internal body processes such as the following: Blood pressure, Heart and respiratory rates and Body temperature.
What is the function of the autonomic nervous system?It helps to maintain the stability and internal balance of the body, through the coordination of various activities such as hormone secretion, circulation, respiration, digestion and excretion.
this system is a functional division of the nervous system, and has parts in the central nervous system (CNS) and the peripheral nervous system (PNS). It unconsciously controls the glands and smooth muscle of all internal organs.
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Sharks, whales, and dolphins share similar features such as body shape and the position of fins. However, sharks have gills for breathing,
while whales and dolphins have lungs. These differences indicate that the organisms share common ancestor for
v
Whales also possess a vestigial pelvic bone. The presence of the pelvis bone may indicate that whales?
Ans These differences show that they belong to a same kind of species. But in science whales are categorized as mammal
Explanation:
Looking at the graph (photo attached), what is the independent and dependent variable?
Answer:
independent: food
dependent: mass grain
Explanation:
when speaking of the anatomy of a virus, we can say that ________.
When speaking of the anatomy of a virus, we can say that it is a protein capsid which comes in form a RNA or DNA
What is anatomy of a virus?A virus is of a single or double-stranded nucleic acid surrounded by a capsid (called the protein shell).
When they are inside the living host cell, they can only produce once. Hence we can conclude that when speaking of the anatomy of a virus, we can say that it is a protein capsid which comes in form a RNA or DNA
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write a recursive function that takes a pointer to the root node of a tree t and returns a pointer to the root node of the tree that results from removing all leaves from t
The recursive function that takes a pointer to the root node of a tree t and returns a pointer to the root node of the tree that results from removing all leaves from T is given as
void removeLeaves( Node * & t )
{
if( t == NULL || ( t->left == NULL && t->right == NULL ) )
{
t = NULL;
return;
}
removeLeaves( t->left );
removeLeaves( t->right );
}
What is a Recursive Function?A Recursive function in the language of programming refers to a routine that requests services from itself directly or indirectly.
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Why is it important to track our carbon and ecological footprint?.
Answer:
The carbon footprint is a very important means to understand the impact of a person's behavior on global warming. This is why someone who effectively wants to contribute to stopping global warming, at least on an individual scale, needs to measure and keep track of their personal carbon footprint.
Explanation:
5. Which of the following does NOTdescribe a difference between hormones and neurotransmitters?
A. Hormones are carried by blood, while neurotransmitters diffuse at synapses.
B. Hormones are released by endocrine glands, but neurotransmitters are released by neurons.
C. Hormones are chemical messengers, but neurotransmitters are electrical signals.
D. Hormones have longer lasting effects than neurotransmitters.
Answer: A
Explanation:
The heart is actually (one, two, or three) pumps?
The heart has two pumps
Properties of the heartThe properties not the heart include;
It is divided into two pumping systemsThe right system receives oxygen - poor blood from the veinsThe left system gives out oxygen-rich blood through the artery to other organs of the body.It is divided into four chambersThus, the heart has two pumps.
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The heart as a vital organ is characterized as being an organ with two pumps.
How many pumps are in the heart?A typical heart is characterized by 4 chambers in which case, it has two upper and two lower chambers. The upper chambers, otherwise termed the right and left atria, receive low pressure incoming blood while the lower chambers, the more muscular right and left ventricles, pump blood out of the heart.
Hence, it follows the heart contains two pumps.
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Most transmembrane proteins have ___________ regions facing the intra- and extracellular fluid, and __________ regions embedded in the phospholipid bilayer.
Most transmembrane proteins have hydrophilic regions facing the intra- and extracellular fluid, and hydrophobic regions embedded in the phospholipid bilayer.
What is transmembrane protein?Transmembrane proteins are membrane proteins that surrounds the entire entity of the cell connecting both the outside and the inside of the cell.
The hydrophilic regions are the regions that are water loving which faces the intra- and extracellular fluid.
The hydrophobic regions are the regions that repels water and they are found within the phospholipid bilayer.
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a. Worldwide, what percentage of human water usage does industry account for? (Note: This relates to water usage now, not water supply.) What is the percentage in the United States?
Explanation:
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Who was the first person to classify organisms into two groups
The first person to classify organisms into two groups was Aristotle, but Lineu was recognized as the father of taxomy
Who were the main scholars of biological classification?One of the central figures in the history of biological classification was the Swedish naturalist Carl von Linné, popularly known in our country as Linnaeus (1707-1778). His classification system encompassed all organisms and was based on the similarities between them.
Moreover, Aristotle, as far as is known, was the first to classify living beings. He divided them into two groups: animals and plants.
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Which concept is part of the theory of evolution by natural selection
Answer:
New generations are better suited to survive than previous generations.
Explanation:
Darwin's evolutionary theory states that evolution is the slow process through which organisms change over time. Natural selection is the process by which evolution takes place. Variation in organisms, some of which offers an adaptive benefit, may be passed down from generation to generation. Better suited organisms will have a higher probability of surviving and procreating, and they will also pass on these phenotypic modifications to the offspring. Evolution is a long, protracted process because these phenotypic changes occur gradually across generations at the species level. As a result, it is anticipated that future generations would be better adapted to endure in the same environmental circumstances.
Can someone help me please
Explanation:
his blood - stained sword lost its sharpness
Answer:
D
Explanation:
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1.write the chemical equation for transpiration
2.what is translocation ??,give the chemical equation for translocation
plss help will mark brainlest..
Answer:
Explanation:
1.6CO2 + 6H2O — > C6H12O6 + 6O2.
2.Conducting tissue is concerned mainly with the transport of soluble organic material made during photosynthesis. This process of transportation is called as translocation.
