Answer:
Robert Hooke.
Explanation:
Robert Hooke is a British scientist and he was the scientist that looked at cork and used the term "cells" to describe what he saw in 1665.
A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature.
A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
Generally, cells have the ability to independently replicate themselves. In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles and they include cell membrane, nucleus, golgi apparatus, cytoplasm, ribosome, lysosome, chromosome, etc.
Answer:
Hooke the first was correct
What are the beserkers in gears of war meant to be
Answer:Berserkers are female Locust. Even though they are blind, they use their sense of smell and hearing to find their target(s).
What will happen to the frog population over time
Answer:
The average decline in overall amphibian populations is 3.79 percent per year, though the decline rate is more severe in some regions of the U.S., such as the West Coast and the Rocky Mountains. If this rate remains unchanged, some species will disappear from half of the habitats they occupy in about 20 years.
Explanation:
cuz
is hair a living thing explain why or why not
Answer:
Hair and nails are not living things they are considered living because they are attached to a living thing but no they are not living.
Explanation:
Hope this helped
Hair is not considered a living thing. Hair is composed of dead cells that are produced by living cells in hair follicles.
Is hair a living thing?Hair is primarily made up of a protein called keratin, which is produced by specialized cells within the hair follicles. These cells, called keratinocytes, undergo a process of differentiation as they move upward through the hair follicle, eventually becoming fully keratinized and forming the hair shaft. Once the hair shaft is fully formed, it no longer possesses any metabolic or cellular activities. It lacks a blood supply, nerve endings, and other cellular structures that are characteristic of living tissues.
While hair itself is not alive, the hair follicles that produce hair are living structures and play a crucial role in hair growth and maintenance. Hair growth occurs in cycles, with each hair follicle going through a growth phase (anagen), a transitional phase (catagen), and a resting phase (telogen). During the anagen phase, the hair follicles actively produce new hair cells, which eventually become part of the hair shafts.
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What are the waste product of alcoholic fermentation
Answer:
Ethanol fermentation causes bread dough to rise. Yeast organisms consume sugars in the dough and produce ethanol and carbon dioxide as waste products. The carbon dioxide forms bubbles in the dough, expanding it to a foam.
Answer:
Ethanol and carbon dioxide
Explanation:
What is positive feedback loop is also know as
Answer:
positive feedback (exacerbating feedback, self-reinforcing feedback) is a process that occurs in a feedback loop which exacerbates the effects of a small disturbance.
why does the gummy bear grow when soaked in sugar water?
Answer:
Salt or sugar ions in water are much smaller than the gelatin molecules in the candy. ... Because of osmosis, water molecules move to an area with more solute in it to balance things. The catch is that the water is locked up in the candy and can't move. The Gummi Bear can't shrink further, so it stays about the same size.
Explanation:
i hope it's help
Gummy bear grow when soaked in sugar water because of osmosis, water molecules move to an area with more solute in it to balance things.
What do you mean by osmosis?Osmosis is the movement of solute molecules from lower concentration to a higher concentration of solution through a semipermeable membrane.
During osmosis, the solvent moves from the solution that is lower in solute concentration to the solution that is higher in solute concentration.
Osmosis helps in stabilizing the internal environment of the organism by balancing the levels of water and intracellular fluids. The nutrients and minerals enter the cell by osmosis which is necessary for the survival of cells.
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What is the correct order of amino acids given the following code: CAG-ACA-AAC
Among the Old Order Amish of Lancaster, Pennsylvania, there is an unusually high frequency of polydactylism (extra fingers). Since the group was founded by a small group of separatist German Mennonites in the early 1770s, some 61 cases of this rare trait have been reported, about as many cases as in the entire rest of the world since that time. Given that the trait is inherited, how can you explain the high frequency of this trait among the Old Order Amish
Answer:
A founder effect
Explanation:
A founder effect is a genetic phenomenon caused by genetic drift (i.e., fixation of alleles due to random sampling). A funder effect occurs when a small group of individuals separates from an original population. Due to this separation, some randomly sampled alleles are fixed in the new population, while many other alleles are lost from the original population. Polydactylism is a trait caused by the inheritance of a dominant allele. In this case, it is expected that the frequency for this allele was increased in the original group of separatist German Mennonites, thereby increasing the frequency of the trait in the new population.
Which is required for both anaerobic respiration and aerobic respiration?
-oxygen
-water
-mitochondria
-glucose
1. In human populations in Africa, two common alleles affect the structure of hemoglobin, the protein that carries oxygen on red blood cells. What is regarded as the normal allele (the allele common in European populations) is usually labeled A, and the sickle-cell allele is designated S. There are three hemoglobin genotypes, and the phenotypes associated with these genotypes can be distinguished in a variety of ways. In one African population of 10,000 adults, for example, there are 4,000 AS individuals, 6,000 AA individuals, and 0 SS individuals. a. Suppose that these individuals were to mate at random. What would be the frequency of the A and S alleles among the gametes that they produced
In the African human population two common alleles affect the structure of the hemoglobin, the proteins and oxygenated red blood.
The common alleles of the Europeans being labeled as A and sickle cells as S have three types as genotypes, phenotypes and associated. For an African population of 10,000, there are 4000 samples As the individuals of 6000 have AA and 0 SS. If the individual were mating randomly then A and S alleles would produce be doubled.Learn more about the human populations in Africa, two common.
brainly.com/question/13577302.
 What are the two characteristics of areolar 
Answer:
Elasticity
Explanation:
This allows a comodating the stretch that occurs in vessels and other organs during the movents of the body
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What type of bond is formed when two atoms share one or more pairs of valence electrons?
Answer:
Covalent bond
Explanation:
When atoms share valence electrons, it is called a covalent bond. Be careful not to confuse this with an ionic bond, which is when valence electrons are transferred from one atom to another. Hope this helps!
The fruit fly is an excellent organism for genetic studies because it has simple food requirements, occupies little space, is hardy, completes its life cycle in about 12 days at room temperature, produces large numbers of offspring, can be immobilized easily for examination, and has many types of hereditary variations.
a. True
b. False
Answer:
TRUE
Explanation:
The characteristics of D. melanogaster make it a good and easy species to work with. The fruit fly is excellent for genetic studies not only because of all the mentioned traits, but also because it results easy to immobilize them for examination, their four pairs of chromosomes can be easily identified in salivary glands, and many of their genetic variations can be seen using low power microscopes. Also, it results in a perfect organism that can be used in education during genetic curses either in high school or university.
Which statement summarizes the relationship between DNA, proteins, and amino acids?
A. The DNA molecule is a protein formed by amino acids that are linked together by peptide bonds.
B. The type of protein that composes DNA codes for the twenty different amino acids.
C. The sequence of amino acids in DNA determines the type of protein formed during protein synthesis.
D. The sequence of nucleotides in DNA codes for specific amino acids which bond to form proteins.
Answer:b
Explanation:
The statement (B) is correct. The type of protein that composes DNA codes for the twenty different amino acids.
What are proteins?Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues.
Moreover, proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.
Therefore, a molecule made up of amino acids. Proteins are needed for the body to function properly. They are the basis of body structures, such as skin and hair, and of other substances such as enzymes, cytokines, and antibodies.
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Create an atom with Atomic Number equal 2
Answer:
The answer would be the element helium.
Explanation:
The helium has 2 protons and 2 nuetrons in the atom, therefore giving it the atomic number of 2.
When human undergo anaerobic respiration , they
When humans and other animals lack sufficient oxygen, they'll create ATP through a form of anaerobic respiration that produces lactic acid as a byproduct. ... Yes 'Anaerobic' means 'without oxygen. Cells will produce ATP through lactic acid fermentation only under when they lack sufficient oxygen.
Answer:
They experience sore muscles
Explanation:
Have a nice day lol <3
How is atp used in the cellular process besides oxygen production
Answer:
•some examples of cellular processes that require ATP
ATP is consumed for energy in processes including ion transport, muscle contraction, nerve impulse propagation, substrate phosphorylation, and chemical synthesis. These processes, as well as others, create a high demand for ATP.
Explanation:
i hope it's help
Is water dry or moist????
Answer:
moist
Explanation:
because water is a liquid and its a moisture of wet
The final paragraph of the CNN report said that "several eye specialists" had pointed out that the study should have accounted for heredity. Myopia is passed down from parents to children. Myopic parents are more likely to have myopic children, and may also be more likely to leave lights on habitually (since the parents have poor vision). In what way does the knowledge of this possible genetic link affect how we interpret the data from the study? Explain.
Answer:
Myopia is a phenotype that results from interactions between genetic factors and the environment
Explanation:
A quantitative trait is a polygenic trait that depends on the cumulative effects of many genes and the environment. Some examples of quantitative traits include weight and height. Myopia is a quantitative trait whose phenotype depends on the combined action of different genes and the environment. It has been shown that genetics plays a central role in this trait (myopia), it is for that reason that myopic parents are more likely to have myopic children. However, there also are environmental factors (e.g., diet) which increase the risk to suffer myopia.
Which of the following statements is true?
OA. Chemical reactions can either absorb thermal energy or release thermal energy
ОВ.
Chemical reactions can only absorb thermal energy.
OC.
Chemical reactions can neither absorb thermal energy nor release thermal energy.
OD.
Chemical reactions can only release thermal energy.
Answer: Chemical reactions can either absorb thermal energy or release thermal energy.
What is true about cardiac (heart) cells compared to brain cells?
Different DNA which make different proteins
Same proteins being used to create different DNA
Same DNA being used to make different proteins
Different proteins used to create different DNA
Answer:
Same DNA being used to make different proteins
Explanation:
Cells of all living organisms contain the genetic material called DNA. One of the characteristics of multicellular cells is the ability of their cell to DIFFERENTIATE i.e. form specialized cells during division.
However, it is worthy to note that all cells possess the same DNA but some of the genes contained are expressed into proteins while others are not. This leads to why cells that contain similar DNA make different proteins and perform differently.
In this case, cardiac (heart) cells and brain cells contain the same DNA but due to the expression of some genes and repression of others, they are able to differentiate into different cells.
What is the correct "height" or "size" for a piece of oils rigs to become a candidate for "rigs to reef." Remember, oil rigs can be cut into different sizes or parts.
Answer and Explanation:
An oil rig is a type of piston ring which is situated in the ring grooves. The oil ring is commonly used on small engines to wipe excess oil from the wall of the cylinder during the piston's movement. Through the opening of rings, excess oil returned to the oil reservoir. These rings are not used on the two-stroke cycle engines. These rings are one-piece or two-piece. An oil ring seals the combustion chamber through inherent pressure and controlling the consumption of oil. The inherent pressure of the oil ring is very high on the piston. These rings use an expander, high-pressure unit and inherent pressure. The oil rings are also used to spread the oil around the liner surface. These rings can be cut into various sizes. An oil ring has an axial.
You accidentally stub your toe on a chair when walking in a darkened room. A ________ - Word Answer Type your answer here (pain receptor) relays this information by sensory nerves _________ - Word Answer Type your answer here Please type your answer to submit ) to the _________ - Word Answer Type your answer here , which in this case is the spinal cord. You immediately step back because the spinal cord sends a command via the _______ - Word Answer Type your answer here to your leg muscles, which are acting as the ________ - Word Answer
Answer:
1. Receptor (nociceptor).
2. Afferent neurons.
3. Spinal cord.
4. Motor neurons.
5. Efferent neuron (effector).
Explanation:
In Biology, stimulus can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.
In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ.
In this scenario, you accidentally stub your toe on a chair when walking in a darkened room. A receptor (nociceptor) relays this information by sensory nerves in the afferent neurons to the spinal cord, which in this case is the spinal cord. You immediately step back because the spinal cord sends a command via the motor neurons to your leg muscles, which are acting as the efferent neuron (effector).
A farmer keeps his piglets in small pens and they have become aggressive towards one another. He gives the piglets large doses of antibiotics every day to prevent infection. Why is this dangerous?
options:
A. the antibiotics might cause cancer
B. the antibiotics might change the nutrition of the pork
C. the germs will grow resistant to the antibiotics
D. the antibiotics may stunt the growth of the piglets
Which of the following questions cannot be answered by science? A) how do birds fly? B) Is this a good song? C) What is an atom D) How does a clock work?
Answer:
is this a good song
Explanation:
why? umm because there is no particular way to know if a song is good or not, it is not a fact . it will veries from people to people and are just different personal opinions . some prefer rock while some like calm songs but it doesn't mean that one rock is better than the other.
2. Insects which attack woollen clothes are
a. Silkworm b. silver fish c. ants d. butterflies
Answer:
a
Explanation:
it would be a silkworm because they feed exclusively on animal fibers such as wool. hope this helps!
What is a type of reaction that occurs when you burn something? (combine it with oxygen)
Answer:
Combustion is the scientific word for burning. In a combustion reaction, a substance reacts with oxygen from the air. Combustion reactions happen at high temperatures, and transfer energy to the surroundings as light and heat. This is why you see flames when things burn.
Answer:
A substance combines with oxygen and releases energy in the form of heat and light.
combustion is the best type of chemical reaction.
Explanation:
When a substance combines with oxygen and energy is emitted in the form of heat and light, this process is called combustion.
There are two types of combustion.
1) Complete Combustion : It is a type of combustion in which fuel is quickly react with high amount of oxygen forming carbondioxide, water, heat and light.
2) Incomplete combustion : It is a type of combustion in which fuel is react with low amount of oxygen forming carbonmonoxide, carbon and water.
Explanation: Combustion is a reaction in which a substance (a fuel) reacts with oxygen to produce heat energy. Another name for combustion is burning. Combustion can be complete or incomplete: complete combustion takes place in the presence of unlimited supply of oxygen in which the substance is completely oxidized leaving water and carbon dioxide as by-products. Incomplete combustion occurs in the presence of limited quantity of oxygen in which the substance is not completely oxidized. The byproducts are carbon monoxide and soot.
help guyz please please please
Answer:
I think its C
Explanation:
Mention two important benefits of forests.
Answer:
The benefits provided by forest ecosystems include: goods such as timber, food, fuel and bioproducts.
Answer:
1. ecosystems include
2. good such as timber
Explanation:
I hope it help
When sufficient heat is applied, double-stranded DNA denatures into two single-stranded molecules as the heat breaks all of the hydrogen bonds. In an experiment, molecules of single-stranded DNA from species X are separately hybridized with supoosedly homologous single-stranded DNA molecules from five species (A-E). The hybridized DNAs are then heated, and the temperature at which complete denaturation occurs is recorded. Based on the data, which species is probably most closely related to species X
Answer and Explanation:
When sufficient heat is applied, DNA unwinds, and the hydrogen bonds that grip the strands together weaken and break. The process of breakdown of double-stranded DNA into single strands is called DNA denaturing. The temperature at which double-stranded DNA is half denatured is termed as Tm (melting temperature). By the absorbance of the DNA solution, the amount of strand melting is measured at 260nm. At this wavelength, nucleic acids absorb light. When DNA strands come together, the proximity of the bases in the DNA strands reduces some absorbance. When the DNA strands separate, the absorbance rises 30% to 40%, and quenching of the absorbance disappears. This is known as hyperchromicity. By using DNA denaturation, the sequence difference between the two DNA sequences can also be detected. When double-strand DNA is heated, it denatured into a single-stranded state. The mixture is cooled to allow the strands to re-hybridize. Hybrid molecules are formed among related sequences.