Answer:
Chemoautotrophs are able to synthesize their own organic molecules from the fixation of carbon dioxide. These organisms are able to produce their own source of food, or energy. The energy required for this process comes from the oxidation of inorganic molecules such as iron, sulfur or magnesium.
Explanation:
An experiment was conducted to demonstrate the passage of glucose and starch across a selectively permeable membrane that allows monomers but not polymers to diffuse through.
Glucose and starch powders were mixed in 10 ml of water and poured into a cellulose bag, which was then sealed at both ends and placed in a beaker of water. After 30 minutes, the presence of glucose in the beaker was recorded with a testing paper, which turns green if glucose is present. The presence of starch was recorded by adding a few drops of iodine, which causes the solution to turn violet if starch is present.
A beaker filled with 100 milliliters of distilled water. A bag filled with 10 milliliters of water and a solution of 2 percent glucose and 2 percent starch is placed in the beaker of water.
Which statement best describes the expected result?
A) The testing paper will turn green and the solution will turn violet.
B) The testing paper will turn green and the solution will not turn violet.
C) The testing paper will not turn green and the solution will turn violet.
D) The testing paper will not turn green and the solution will not turn violet.
Answer:
B
Explanation:
because if you read the first paragraph, the membrane will only allow monomers not polymers. glucose is a monomer and starch is a polymer. so the membrane will only take glucose and the color for glucose therefore the color is only green.
In a murder trial, which person testifying to the jury is classified as an eyewitness?
The medical examiner who found poison in the victim's stomach
An expert discussing evidence collected during an investigation
A defendant's best friend, who was out of town when the crime was committed
A person who claimed to see a car of a certain make/model leaving the scene of a crime
Answer:
A person who claimed to see a car of a certain make/model leaving the scene of a crime.
Explanation:
Key words to the answer:
"See"
"leaving the scene of a crime."
Eyewitnesses have a firsthand glimpse of events that occurred and they usually have to have seen something that has occurred to be considered a eyewitness, in this case the person who saw the Make/Model of the car that left the crime scene has some claims that can be used to find the criminal and also when the eye witness sees the car they can tell which direction it went in to give a bit of a clue(although this depends in certain situations). The eye witness can also be anyone who was anywhere near the crime scene when it happened or even a little bit after it happened.
Answer:
D. A person who claimed to see a car of a certain make/model leaving the scene of a crime
Explanation:
It is D because it would be the closest possible lead for finding who did the crime. Anyone around the time of the murder and anyone going in and out at the time is a suspect, even the eyewitness. If the eyewitness saw someone leaving the location moments before it was reported, that would be suspicious.
(lol among us vibes. it hyped me up for this moment.)
The medical examiner who found poison in the victim's stomach
It would not be this one because they were called after the crime took place, the medical examiner only saw the aftermath of said way to k!ll the person.
An expert discussing evidence collected during an investigation
The expert collected data of the crime scene after it had happened. Otherwise, this would not have been possible. So, they were not an eyewitness since they were not present at the time.
A defendant's best friend, who was out of town when the crime was committed
How would the addressed person out of town see the crime scene? Maybe they were threatened to leave the city? Anyway, it just would not make since for the best friend to be an eyewitness at the time of the crime if they were miles away.
Which of these transport processes is the major means by which Na+ is transported across the membrane of neurons? Why?
A) both II and III because the activity of the neuron varies
B) I because Na+ is so small it can freely diffuse into the cell
C) III because Na+ is actively transported out of a neuron to maintain extracellular concentration
D) II because Na+ is charged and cannot cross the hydrophobic interior space of the cell membrane
Answer:
i think it’s C
Explanation:
I. is diffusion
II. is facilitated diffusion
III. is active transport
the third diagram makes most sense to me
Transport processes is the major means by which Na+ is transported across the membrane of neurons,I because Na+ is so small it can freely diffuse into the cell.
What are membrane used for?Membranes are used more and more often for the creation of process water from groundwater, surface water or wastewater. Membranes are now competitive for conventional techniques.
Thus, option "B" is correct.
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What is the main function of the cell membrane of a cell?
A. To organize the cell's internal contents
B. To limit the size that the cell can reach
C. To protect the cell from harmful substances in the environment
D. To exchange nutrients and the cell's wastes with the external
environment
When someone tosses an object towards your face, you blink. This response is controlled
by
O A. amino acids
B. the immune system
C. hormones
a
O D. the nervous system
Answer:
D. the nervous system
Explanation:
This system of your body controls your reflexes! :D
Answer:
Nervous system
Explanation:
The nerve receptors responsible for transmission of impulses to the brain are a part of nervous system.
Under normal conditions, gases diffuse through small holes in the leaves of a plant. When the weather is very hot and dry, plants may close these openings to conserve water. How are the closures most likely to affect photosynthesis? O They increase the rate of photosynthesis by increasing the amount of water in the leaf They decrease the rate of photosynthesis by preventing carbon dioxide from entering the leaf They increase the rate of photosynthesis by increasing the amount of oxygen in the leaf They have little or no effect on photosynthesis because gases do not take part in the process
Answer:
They increase the rate of photosynthesis by increasing the amount of water in the plant.
Explanation:
It is hot and dry when these openings close, so the Sun has to be out. Photosythesis is caused when the Sun and water are used by a plant to make food.
The answer to the question should be they increase the rate of photosynthesis by increasing the amount of water in the plant.
A diagram of photosynthesis is below.
The closures that are most likely to affect photosynthesis are they increasing the rate of photosynthesis by increasing the amount of water in the plant. The correct option is A.
What is photosynthesis?Photosynthesis, the method used by plants and other autotrophic organisms to make food, converts carbon dioxide into glucose and oxygen, both of which are vital for life.
Photosynthesis depends on some factors. These factors are water, sunlight, and carbon dioxide. If there is a scarcity of any factors, it impacts the process of photosynthesis. If the water does not get enough water, it will dry and there is less chlorophyll for the plant to carry out photosynthesis.
Therefore, the correct option is A. They increase the rate of photosynthesis by increasing the amount of water in the leaf.
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1. A substance that destroys pathogens that are outside of the body.
Answer:
It can be things like bleach, soap, or vinegar.
Explanation:
Answer:
Antiseptic
Explanation:
Chemical such as soap, vinegar, or rubbing alcohol that destroys pathogens outside of the body.
Hellllpppppoo101010010101
Answer:
8
Explanation:
He is was a modern scientist(microbiologist and biophysicist).
Hello please help ill give brainliest, thank you!
Answer:
I'm almost positive it's C
Explanation:
Question 9 of 10
A pot of water is heated on an electric stove top and begins to boil Which
two transfers of thermal energy involved in this system are examples of
conduction?
O From the air above the pot as currents form
B. In the water as water currents develop
From the pot to the water
From the burner to the bottom of the pot
SUBMIT
The two transfers of thermal energy involved in this system are examples of conduction that may include the burner to the bottom of the pot and from the pot to the water. Thus, the correct options for this question are C and D.
What is Conduction?Conduction may be defined as the process through which heat energy is typically transmitted through collisions between neighboring atoms or molecules. The process of conduction occurs more readily in solids and liquids, where the particles are closer together than in gases, where particles are further apart.
The mechanism through which heat is transferred from the hot part to the cold part of the body through the transfer of energy from one particle to another particle of the body without the actual movement of the particles from their equilibrium positions is called conduction.
Therefore, the correct options for this question are C and D.
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Replicated chromosomes are called
centromeres
homologous chromosomes
karyotype
sister chromatids
Answer:
Sister Chromatids
Explanation:
Before anaphase begins, the replicated chromosomes, called sister chromatids, are aligned at along the equator of the cell on the equatorial plane. The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere.
A nickle would have a mass closest to?
Answer:
A nickel would have a mass closest to an atom
Explanation:
A nickels mass is 58.6934 which is the same atomic mass as atom
Which population is most likely to have exponential growth?
O A. The dust mites living in a sofa that is often used and never
cleaned
B. The angelfish living in a coral reef where there are many sharks
C. The mice living in a meadow with plenty of predators and limited
food
D. The foxes living in a forest where they compete with other animals
for food
Answer:
A. The dust mites living in a sofa that is often used and never cleaned
Explanation:
Without the sofa being cleaned, the dust mites will never experience any predation or die off from humans and harsh cleaning chemicals. This will enable the population to increase exponentially, as opposed to the other options where the organisms are at risk for ample predation and starvation.
Exponential growth refers to the growth of organisms in an environment having unlimited resources. The organism grows exponentially or in a geometric fashion.
The dust mites living on the sofa that is often used and never cleaned.
The population has high chances of exponential growth will be:
1. Exponential growth is seen in the environment or surroundings where the resources are plentiful, and the number of organisms is dependent on those resources.
2. The dust mites living in the sofa that has never been cleaned will show exponential growth. Since the sofa is never cleaned, the mites have never faced any elimination by chemicals. The population will increase exponentially.
3. The other options have chances of competition, starvation, and predation that will not lead to the exponential growth of organisms.
Thus, the correct answer is Option A.
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Is there a symbiotic relationship between plants and water? If so, what effect does it have on their ecosystem?
A. Yes, there is a symbiotic relationship that is beneficial to both.
B. No, this would not be a symbiotic relationship
C. Yes, there is a symbiotic relationship that is beneficial for the plant but harmful to the water.
Pls help me with this :(
Answer:
a
Explanation:
because it is beneficial in both plant an water
Answer:
(B) No this would not be a symbiotic relationship.
Explanation:
this is because symbiotic relationship is where the two organisms have a mutual relationship where they depend on each other. The plants depend on water for their growth while the water does not depend on anything from the plants.
An example of a symbiotic relationship is between rhizobium bacteria and leguminous plants.The rhizobium bacteria gets shelter and food from the leguminous plants while the leguminous plants use the bacteria to convert nitrogen in the air to nitrates through a process called nitrogen fixation.
What kind of protist causes dysentery?
A euglena
B amoeba
C algae
D slime mold
Answer:
D
Explanation:
Which choice is right?!
Answer:
I think it's because plants have chloroplasts because chloroplast are the organisms that helps plants in making their own food
Answer:
Because plants have chloroplast. Chloroplast are organelles that conduct photosynthesis where the photosynthetic pigment captures the energy from sunlight converts it and stores it in the energy storage molecules ATP and NADPH while freeing oxygen from water in plant and algal cells.Using only facts to explain or describe is being ___________________________ .
Group of answer choices
A)objective
B)factual
C)subjective
D)influential
A plant growing toward the sun is an example of
Answer:
phototropism
Explanation:
Answer:
Hi Noya here! (◕ᴥ◕)
Explanation:
Phototropism is the term that describes the growth of a plant toward any light source. School-age children often demonstrate this principle by showing how a newly sprouted seed, for example, leans in the direction of a nearby light bulb. Heliotropism is the process that describes how a plant specifically tracks the sun’s movement across the sky.
-happy to help! ʕ·ᴥ· ʔ
Can you identify the class of organic molecule to which these molecular structures and examples belong?Sort these items into the appropriate bins.
I SOLVED IT LOL
The correct class of molecules to which molecular structures and examples are:
Carbohydrates- starch and monosaccharide.Lipids - cholesterol and fatty acid moleculeProtein - amino acids and lactaseNucleic acids - DNA and nucleotide1. Carbohydrates:
Components: made of one or more monosaccharides.Functions: regulates energy for cell, energy storage, and plant cell support Examples: glucose, glycogen, starch and cellulose2. Lipids:
Components: fatty acid, glycerol, fat moleculeFunctions: energy storage, cell membrane components, and hormonesExamples: fats, phospholipids, and steroids3. Proteins:
Components: amino group, carboxyl group, R group, and amino acidFunction: enzyme, structural protein, transport, communication, immunity, storageExample: lactose, hair, tendons, muscles, hemoglobin, signal proteins, antibodies, egg albumin, receptor protein4. Nucleic acids:
Components: phosphate group, nitrogeneous base, ribose or deoxyribose, nucleotideFunctions: heredity Example: code for proteins, DNA, RNALearn more about macromolecules:
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Which statement best describes the purpose of the eye?
A. The eye takes in and responds to stimuli.
B. The eye sends images to the brain.
C. The eye receives and processes visual signals.
D. The eye lets in varying amounts of light.
Answer:
D?
Explanation:
Sorry if im wrong >-<
The basic unit of structure and function of living things is the?
Answer:
cell units
Explanation:
Answer:
Cell is the basic structural and functional unit of life.
What is a major obstacle in cellular respiration? It is limited by the low amount of energy stored in a glucose molecule It is an exergonic reaction, with much of the energy lost as heat, which potentially might damage cells It is an inefficient reaction and doesn’t provide eukaryotic cells with enough energy It requires oxygen to be actively pumped against its concentration gradient into cells
Answer:
It is an exergonic reaction, with much of the energy lost as heat, which potentially might damage cells
Explanation:
Cellular respiration is an important process carried out by the cells of living organisms in order to supply energy needed for their various cellular functions. Cellular respiration generally involves the breakdown of the stored energy in glucose molecules (in the presence of absence of oxygen).
However, since the process of cellular respiration releases energy as chemical energy (ATP) and majority as heat energy, it is said to be an EXERGONIC REACTION i.e energy-releasing. This hear energy released can damage living cells, which is a major setback to cellular respiration.
Which body system has a function most similar to the role lysosome plays for a cell
Answer:
the excretory system
If blood flow through the afferent arterioles increases:
a. the smooth muscle in the vessel walls stretches to accommodate.
b. the increased flow and the stretch stimulates further relaxation of the arteriolar wall, lessening blood pressure.
c. the stretch stimulates further relaxation of the arteriolar wall, lessening blood pressure.
d. stretch stimulates vasoconstriction to reduce the flow.
e. the smooth muscle in the vessel walls stretches to accommodate the increased flow.
Answer:
d. stretch stimulates vasoconstriction to reduce the flow.
Explanation:
Afferent arterioles are a network of blood vessels that supplies the kidneys with blood. They branch from the renal artery and are important in blood regulation.
Myogenic mechanism is used to regulate blood flow to the kidney.
When blood flow increases to the afferent aterioles the smooth muscles its wall stretches and contracts to resist the pressure. This reduces blood pressure.
When the pressure reduces the smooth muscles relax to allow more flow of blood.
What is the primary purpose of the mitochondria in a cell?
A. They store genetic information
B. They convert glucose into ATP energy the cell can use
C. They trap sunlight and use the energy to make food
D. They ship proteins across the cell membrane
Answer:
convert glucose into ATP energy the cell can use.
Explanation:
you may have heard the phrase “mitochondria are the powerhouse of the cell” before, and it’s because they create energy for the cell
Activity A (continued from previous page) 4. Observe: Wait until the numbers are not changing very much. What do you notice about the solute concentrations inside and outside of the cell? This situation is called dynamic equilibrium
Answer:
Yes, dynamic equilibrium is present in the cell.
Explanation:
In dynamic equilibrium, the concentration of solute remain the same due to equal flowing of solutes inside and outside the cell so there is no change occurs inside the cell, the cell maintain same concentration of solutes both inside and outside the cell. Dynamic equilibrium is a type of equilibrium in which the reactants and products formed at the same rate and no change occurs inside the reaction. In the cell, homeostasis is responsible for maintaining equilibrium in the cell so no change occurs inside the cell.
A substance with a pH of 3 is how many more times acidic than a substance with a pH of 5?
Which statement correctly describes the behavior of light as it interacts with the ocean? A. Longer wavelengths of light penetrate the deepest into the ocean. B. Light penetration in the ocean is only to a depth of about 50 meters. C. Blue light penetrates the deepest in the ocean. D. Blue light reflects of the ocean surface, which gives the ocean its characteristic blue color.
Answer:
D
Explanation:
Makes sense, blue light gets reflected back to our eyes
In the fluid mosaic model, where would you most likely find the transport proteins?
Attached to the outer portion of the phospholipid bilayer
Embedded within the hydrophobic and hydrophilic regions of the bilayer
Flipping, alternating between the hydrophobic and hydrophilic regions of the bilayer
Roaming within the phospholipid bilayer
thanks so much
Answer:
B: Embedded within the hydrophobic and hydrophillic regions of the bi layer
Explanation:
They are integral protiens and have to be inside
i took a test
This movement aids the cell membrane in preserving its function as a partition separating the interior and exterior cell surroundings. Thus option B is correct.
What is the role of transport protein in fluid mosaic model?Integral proteins protrude from each end of the phospholipid bilayer and are tucked inside. Larger molecules like glucose can be transported through cell membranes with the aid of integral proteins.
They have sections that match the polarity of the phospholipid bilayer, known as "polar" and "nonpolar" regions.
This movement aids the cell membrane in preserving its function as a partition separating the inside from the outside environments of the cell.
Therefore, in the fluid mosaic model, the transport protein is connected to the phospholipid bilayer's outer layer.
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What are two important ways to classify tooth form
Answer:
You can identify by the size and/or shape.