Answer:
simple:
Explanation:
When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared. When there is more volume and less surface area, diffusion takes longer and is less effective.
a student observed a food sample that’s left a greasy spot on paper and also gave a positive test for starch. which two organic compounds are present in the food sample ?
Answer:
The correct answer is - fats and carbohydrates are two organic compounds that are present in the sample.
Explanation:
The greasy spot present on paper shows that there are fats present in the food sample that can be butter, ghee, or oil. Fats are the organic compound that provides energy to the organism that eats fat, however, more than a limit fat is harmful to any person.
The starch test suggests that food samples have starch present in the sample, starch is nothing but a polymeric carbohydrate. Carbohydrate is a basic organic compound that provides energy to the body or different organism.
Thus, the correct answer is - fats and carbohydrates.
what organisms are prokaryotic
Which determines the reactivity of an alkali metal?
Answer:
The most reactive alkali metal is Cesium and it reacts when the oxygen is really moist.
Answer:
c
Explanation:
A family went on vacation for a week and was unable to water their houseplants. When the family returned their houseplants had wilted, droopy leaves What the best explanation for this observation?
Answer:
They should have hired someone to water their plants.
Explanation:
As the family goes on vacation for a week, there is not one who can water the houseplants. As the result, the plants undergoes wilting and will finally die.
What is wilting of plant?The wilting of plants is the loss of rigidity of non-woody parts of plants. This occurs due to the turgor pressure in non-lignified plant cells which falls towards zero, as a result of diminished water in the cells. Wilting serves to reduce the water loss, as in this process the leaf reduces in size which makes the leaves expose less surface area and hence reduced water loss.
Plants wilt when the roots are unable to supply sufficient moisture to the stems and leaves of the plant. Wilting for a short period of time does not harm plants, however continuous can lead to death of a plant. Sometimes a plant wilts on a hot day as the moisture is evaporating from the leaves faster than the roots can take it up from the soil.
Learn more about Wilting here:
https://brainly.com/question/14141414
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How long did it take for life to appear on earth?
Genetic information is encoded in a linear sequences of nucleotides,
which are structures that contain
A) a sugar group, a phosphate group, and a nitrogen base
B)an amine group, a functional R group, and a carboxyl group
C)short chains of CHO
D)long chains of CHO
Answer:
B)an amine group, a functional R group, and a carboxyl group
Explanation:
Which is the correct answer?
Answer:
mercury and venus, b
Explanation:
⦁ The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane?
A. simple osmosis
B. active transport
C. simple diffusion
D. facilitated diffusion
can someone help me pls
Answer:
facilitated diffusion
Explanation:
an element has 6 protons and 6 nuetrons what is its atomic number and its mass number.
Answer:The number of protons is equal to the atomic number of the element. For this element having 6 protons makes the atomic number 6 and makes the element Carbon. For this element 6 protons and 6 neutrons combine to make an atomic mass of 12 amus.
Explanation:
Answer:
the atomic number is 6 but the mass is 12
Explanation:
Which is a strong synthetic polymer that can be used to make toys and bottles? polystyrene foam polyethylene nylon vulcanized rubber
Answer:
i think its the second one im doing the test right now hopes this helps have a good rest of your day
Explanation:
Answer:
B=polyethylene should be the right answer
Explanation:
whats the concept map
Which level of organization is seen in both a school of anchovies and a gaggle of geese?
A. Ecosystem B. Community C. Population
D. Biome
Answer:
B Community
Explanation:
Both of them are organized in to their own group
Which student, if either, is most correct in their claim regarding the ATP/ADP cycle?
A. Brianna's claim is correct - the removal of a phosphate group (or the breaking of
a chemical bond) supplies a great deal of energy from the cell and the ATP/ADP process is not continuous.
B. Neither student is completely correct. Oscar is correct in that this process is a
cycle and Brianna is correct in that the removal of the phosphate group supplies the most energy
C. Oscar's claim is correct - the addition of a phosphate group (or the making of a
chemical bond) supplies a great deal of energy from the cell and the ATP/ADP
cycle is continuous.
D. Both students are correct - Oscar's claim is correct for the process of
photosynthesis and Brianna's claim is correct for the process of cellular
respiration.
Answer:
A
Explanation:
because it is the the ATP/ ADP does not process which is true.
guys please help
Question 11 Part A)
Make sure to sure me your work.
Answer:
95%
Explanation:
190 is 95% of 200.
The comparison of input versus output is also 95%
Papaya plantations in Hawaii have recorded cases of a virus that decreases the health of the papaya plants. To combat the virus, genetic engineers have developed a papaya plant that has the DNA of the virus, making the plant immune to the effects of the virus. Which is a likely concern for farmers about the genetically modified papaya plants?
Answer: Concerns were the health risk associated with those who will eat Genetically modified papaya.
Explanation:
Scientists tried to make a genetically modified papaya in Hawaii because papaya industry was dropping drastically due to PRS virus infection and thousands of farmers had lost their jobs. Then the scientist genetically modified papaya plants by inserting virus resistant genes. This helped a lot in producing disease free crops.
The main ethical concern of farmers was to understand the health risk associated with the crops which are genetically modified with viral genome could cause health complications to consumers.
Explain the relationship between photoshnthesis and cellular respriation. Be sure to include the main purpose of both and where they occur inside the cell
Answer:
photosynthesis occurs in the chloroplast of plant cells. cellular respiration starts in the cytoplasm then reacts in the mitochondria. if you look at the chemical equation of both photosynthesis and cellular respiration they are reverse of each other. in cellular respiration sugar goes in with oxygen, what comes out is ATP(energy), water, and carbon dioxide gas. in photosynthesis energy, water, and CO2 goes in and what is made is sugar and oxygen. The main purpose of cellular respiration and photosynthesis is to make energy and to store energy for later use.
Explanation:
Please help me! What is biodiversity?
If a person combat the disease without a vaccine introduced to his body,such immunity is known as
natural active immunity
natural passive immunity
Artificial active immunity
artificial passive immunity
Answer:
natural active immunity will be the answer
Which of these organisms has the longest life cycle?
sequoia tree
killer whale
fern
tree frog
Answer:
A sequoia tree (3,200 years)
Explanation:
Sequoia tree=3,200 years
Fern=100 years
Killer whale= average of 23 years
Tree frog=7-8 years
Have a great day!
Answer:
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Explanation:
its a
Compare and contrast characteristics and use his own diodes and triodes
Answer:
Comparison of characteristics and use of diodes and triodes is given below:
Diode and triodes both are electrical components but diode allows the flow of current in only one direction while triode has three electrodes.Diode consists of two terminal (anode and cathode) while Triodes have three terminals (cathode, anode, and grid). A diode is an electrical component used to control voltage while triode is a current controlled device. Diodes used in modern electronics such as LED while triodes are used in RF heating systems.Answer:
1. Conditions that result in the emission of electrons from a conductor:
Heating the conductor to a suitable temperature
Exposing the conductor to a strong light
Subjecting the conductor to a very high applied voltage
Subjecting the conductor to high-speed electrons from another source
2. Both diodes and triodes influence current flow and contain electrodes. Diodes involve only two active pieces; triodes contain three electrodes within a tube. Current can flow through a diode in only one direction. Diodes tend to act as rectifiers. In a triode, the third electrode is a grid located between the cathode and the anode. A small difference of potential between the grid and the cathode controls the number of electrons that reach the anode. Adjusting the charge on the grid affects the number of electrons that can reach the anode. Triodes tend to act as amplifiers.
3. Transmitting antenna
Modulator
Oscillator
Microphone
4. RF amplifier
Receiving antenna
Loudspeaker
Demodulator
Tuner
5. hue, saturation, intensity/brightness
6.red, blue, green
Explanation:
pf is all the answer trust me
Which of the following organelles is NOT surrounded by a
membrane? *
A.) chloroplast
B.) nucleus
C.) mitochondria
D.) ribosome
Answer:
A
Explanation:
Answer:
d.) Ribosome
Explanation:
Ribosomes are different from other organelles because they have no membrane around them that separates them from other organelles.
ANSWER QUICKLY
The average size of a grocery store chicken has more than doubled in the past century. What is the most likey reason for this change?
A. Natural selection resulted in a larger species of chicken.
B. Artificial selection created a larger breed of chicken.
C. Mutations occur less frequently in chickens than they did a century ago.
D. Grocery stores used to sell younger chickens.
Answer:
B, artificial selection resulted in a larger species of chicken.
Explanation:
People breed the largest animals (in this case chickens) or plants to improve agriculture.
Hope this helps! ;)
The average size of grocery store chicken has more than doubled in the past century because artificial selection created a larger breed of chicken. The right option would be B.
Artificial selection refers to deliberate actions by humans to selectively breed organisms based on desired traits.
Because big size chickens are desirable for their meats, breeders and genetic engineers would select this trait and favors it over other alternate traits using appropriate scientific procedures (such as controlled mating). Thus, chicken with undesirable traits gradually fades off the population while those with desirable traits are made to thrive.
More on artificial selection can be found here: https://brainly.com/question/22182205
what is the polymer for a lipid?
A. Triglyceride
B. N/A
C. Amino Acid
D. Polypeptide
Answer:
I believe triglyceride is the correct answer.
Explanation:
Fatty acids form more complex lipid polymers called triglycerides, triacylglycerols or triacylglycerides when each single-bonded oxygen molecule bonds to a carbon that's part of a glycerol molecule. Triglycerides are also commonly found in foods, especially animal products.
List the 4 types of water from least dense to most dense
Answer: solid liquid gas plasma
Explanation:
if you are asking for the 4 states of water from least dense to most the answer is above
in paragraph 3 which word or words best describe haversian systems
Answer:
Circular Structures
How many molecules make up a nucleotide?
Answer:
Explanation:
its 3
4
In the food chain: plant parts --> cricket ---> mouse ---> hawk, which organism is the tertiary consumer
Answer:
Hawk
Explanation:
Hawks are considered to be secondary or tertiary consumers in a food chain. This means they eat primary consumers and other secondary consumers.
Answer:
eagle
Explanation:
I NEED HELP , WILL GIVE BRAINLIST:
1.Write a brief essay comparing the process of resiration with the process of photosynthesis.
Photosynthesis is carried out by plants, alga, and blue green bacteria. It takes the energy from the sun and puts it into the bonds of sugar molecules. Photosynthesis only stores energy in food (glucose), we use respiration to get the energy out of food.
Respiration: Process that takes energy from sugar molecules and places it in molecules of ATP
Aerobic Respiration requires oxygen, and yeilds more ATP for a molecule of sugar than anaerobic (no oxygen) respiration.
Photosynthesis and Aeorbic Respiration are opposite reactions. They are also important in cycling oxygen, carbon, hydrogem and water through the environment.
Hope this helps!
A muscle cell requires more usable energy than a skin cell. Therefore, muscle cells contain many more
a ribosomes
b. nuclei
c. mitochondria
d. chloroplasts
Answer:
C
Explanation:
Which of the following examples would be classified as a biotic component in a freshwater system
Fish
Ph of the water
Soil
Water
Answer:
Fish, water pH and the water itself
Explanation:
Fish affect the freshwater system since they live and excrete their waste in the water
pH levels of water should not be below 6 or above 8 for a healthy drink
Also, algae affects the freshwater system
