Answers
Answer: D
Explanation: it provides cells with the energy they need to function. If living things could not get the energy they need out of food, it would be absolutely worthless. All living things would eventually die, no matter the quality and amount of food
Related Questions
if you were able to stop the process of cellular respiration after the completion of the electron transport chain but prior to chemiosmosis, what would you find is true about the ph in the mitochondria?
Answers
The pH of the mitochondria is lower in the intermembrane space.
The oxidative phosphorylation process, also known as the electron transport chain, is a collection of four protein complexes that combine redox events to produce an electrochemical gradient that results in the production of ATP. Both photosynthesis and cellular respiration take place in mitochondria.
An important physiological element that affects a variety of cellular functions is mitochondrial pH. With resting mitochondrial pH values varying from 7.2 to 8.2 in various cell types but having its lowest value in the intermembrane gap, pH in undamaged mitochondria remains alkaline thanks to the activity of the electron transport chain (ETC). The pH of the mitochondria at rest is altered by activation.
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(h) It would be better to calculate percentage change in mass rather than change in mass.
Why is this a more valid method? Tick one box.
Because it makes it a fair test.
Because it makes the investigation of the
samples of cubes more accurate.
Because the samples of cubes were different
masses at the start of the investigation.
Page 2 of 9
Answers
Because the amounts are so little, it is more appropriate to present this as a percentage, as the ratio of weight lost on a limited scale should be roughly the same proportion as mass loss on a bigger size anyhow.
Why is a percentage change more precise?Because you will usually be dealing with large data and numbers, it is more crucial to utilise the % change approach because, as you can see, it provides a more exact representation of how the data has evolved over time.
For analysing statistical data across time, percentage changes are commonly employed, whereas percentage points are commonly used when analysing rate differences.
When comparing different sets of data, calculating the % change is more accurate. Finding the change in mass is only useful for data sets that began with the same mass.
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7. cytosine can be mutated through a deamination reaction. after one round of replication resulting in double stranded dna, what base pair would occupy this position? after two rounds of replication what base pair(s) would you expect?
Answers
cytosine can be mutated through a deamination reaction. after one round of replication resulting in double stranded DNA, uracil-adenine base pair would occupy this position. After two rounds of replication Adenine-uracil and uracil-adenine base pairs are formed in two distinct new double stranded DNA.
What is mutation?
A mutation is a change that takes place in the sequence of our DNA as a result of errors made during DNA replication or environmental influences like UV light and cigarette smoke. Viral infection, exposure to mutagens, and mistakes in DNA replication during cell division can all result in mutations. Germline mutations, which occur in eggs and sperm as opposed to somatic mutations, which occur in body cells, can be passed on to progeny.
A cytosine base can be transformed into uracil, a base generally only found in RNA, by a chemical process called deamination. Uncorrected cytosine-to-uracil changes might result in mutations because during DNA replication, uracil will link with adenine rather than guanine (as it would if the base was still cytosine). And after two round of replication one new double strand DNA have adenine-uracil base pair and another strand have uracil-adenine base pair.
Hence cytosine can be mutated through a deamination reaction. after one round of replication resulting in double stranded DNA, uracil-adenine base pair would occupy this position. After two rounds of replication Adenine-uracil and uracil-adenine base pairs are formed in two distinct new double stranded DNA
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A population of wolves in wyoming experienced a rapid decline. scientists found that 20 wolves died from rabies, 15 wolves died from mange (a parasitic mite), and 10 wolves died from natural causes. wyoming experienced a recent drought, and many populations, including deer, bison, and bear, have diminished in the past year. what is best described in this scenario?
Answers
In this scenario best described is Wolves were exposed to too many limiting factors.
What exactly causes rabies?The rabies virus is just what causes a rabies infection. The virus spreads through the saliva of affected animals. Infected animals can spread the virus to certain other animals or people by biting them. In rare cases, rabies can be spread when contaminated saliva gets in touch with an open sore or mucous membrane, like the mouth or eyes.
Why can't rabies be cured?The permeability of the barrier may increase in an infected brain, allowing antibodies and immune cells to flow through to help eradicate the infection. However, when the rabies virus is present, the blood brain barrier shuts down, thereby making it impossible for anything—including antiviral medications—to get through.
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lateral diffusion of phospholipids in erythrocyte microvesicles occurs at a constant rate of 2±1x10-12 m2/sec (gawrisch et al., 1985). ignoring the standard error, how far would a microvesicle move in one day? given the rate of movements per second, how many movements is this? how large is each movement?
Answers
Rate is 2±1x10-12 m2/sec
a) Ignoring the standard error,
Rate = 2m^2/sec
Rate = area covered/ time
In one day, there 24 hours
24 × 3600s
86400secs
Area covered = 2 ×86400
Area covered = 172800m^2
Assume l =b
Area = l^2
L = (Area)^1/2
L = (172800)^1/2
L = 415.69m
The microvesicle would have moved 416m
b) rate in movement per sec
Rate = 2 movements/s
Rate = movement/ time
In a day there are 86400 secs
Movements = rate × time
Movements = 2 × 86400
Movements = 172800 movements
c) the movement is 2 for every second, the microvesicles takes a movement of 2 every second.
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ATP is used as a source of
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Energy that performs cellular functions.
What is ATP?An organic substance called adenosine triphosphate (ATP) gives energy to a variety of biological functions in living cells. muscular contraction, nerve impulse transmission, condensate dissolving, and chemical synthesis. ATP is frequently referred to as the "molecular unit of currency" of intracellular energy transfer and is present in all known forms of life. ATP either transforms into adenosine monophosphate (AMP) or adenosine diphosphate (ADP) when absorbed in metabolic activities (AMP).To learn more about : ATP
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Which factor can decrease the rate of a chemical reaction?
What is the next step in the process after a substrate enters the active site of an enzyme?
Answers
The factor that can decrease the rate of a chemical reaction is low temperature.
The next step in the process after a substrate enters the active site of an enzyme is the formation of the enzyme-substrate complex.
What is chemical reaction?
A chemical reaction can be described as a process in which one or more substances called the reactants, are converted to one or more different substances known as the product.
A chemical reaction can take place between two atoms or ions or molecules, and they form a new bond and no atom is destroyed or created but a new product is formed from reactants.
The factor that can cause the decrease in the rate of a chemical reaction is low temperature.
The next step in the process after a substrate enters the active site of an enzyme is the formation of the enzyme-substrate complex with the help of non-covalent interactions such as complementary shape, hydrophobic interactions, hydrogen bonding et cetera.
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Place the steps of the respiration process in the correct order.
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The steps of the respiration process in the correct order are:
1. Air enters the nostrils.
2. Air passes from the trachea to the bronchi.
3. Air diffuses from the alveoli to the blood cells.
4.Oxygen enters the blood cells.
5. Blood transports oxygen to other cell.
What is respiration in human biology?"Respiration is described as a metabolic process through which the living cells of an organism obtain energy (in the form of ATP) by ingesting oxygen and releasing carbon dioxide obtained from the oxidation of hard organic molecules."
In terms of physiology, respiration is the move or transfer of oxygen from the external environment to the cells inside the tissues and the removal of carbon dioxide in the other direction, which is back to the environment and the step above is the way to go about it.
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See full question below
Place the steps of the respiration process in the correct order.
1) Air passes from the trachea to the bronchi.
2)Oxygen enters the blood cells.
3)Air enters the nostrils.
4)Air diffuses from the alveoli to the blood cells.
5)Blood transports oxygen to other cells.
Which element is most common in carbohydrates?
O oxygen
O carbon
O nitrogen
O hydrogen
Answers
plant cell walls are composed of cellulose, while fungal cell walls are composed of chitin. a group of scientists hypothesize that this difference means the cell wall has largely different functions in plant cells and fungal cells. alternatively, another group of scientists hypothesize that despite their biochemical differences, plant and fungal cell walls serve similar functions.
Answers
One important role of the cell wall in both plants and fungus is to give the cell structural stiffness. The position of the cell wall is hence comparable in both types of cells. This is evidence in favor of the alternate theory put forth above.
In the plant kingdom, cell wall characteristics change not just between different taxa but also within a single plant tissue and during the course of a single plant's life cycle. Varied organs, various cell types within a tissue, and even a single cell have different cell wall compositions that have been identified. In contrast to the flat areas of the walls where two cells are adjoined, the quantity and distribution of specific cell wall components, for instance, varies dramatically in the triangular cell junctions between three cells. Primary cell wall and secondary cell wall layers (S1, S2, and S3) of the cell wall have different compositions and spatial 3D arrangements of wall components. Such variety in cell walls strongly suggests that many models of
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Which statement best describes the relationship between a hypothesis and a
scientific theory?
A. A scientific theory is used to test a hypothesis.
B. A scientific theory can be proven or disproven by a hypothesis.
C. Multiple supported hypotheses are used to form a scientific
theory.
D. Scientific theories are based on facts, while hypotheses are based
on predictions.
Answers
A scientific theory is used to test a hypothesis. The correct option is A.
What is a scientific theory?A scientific theory is an explanation of an aspect of the natural world and universe that has been repeatedly tested and corroborated using accepted protocols of observation, measurement, and result evaluation.
A scientific theory differs in that it is a broad general explanation that usually includes multiple hypotheses or observations.
A scientific model is used to test a scientific hypothesis or to represent a scientific theory.
Thus, it can be concluded that a hypothesis can be tested by scientific theory, means the correct option is A.
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Answer:
Its c, Multiple supported hypotheses are used to form a scientific
theory.
Explanation:
I got it right
Anatomy, Articulations H.W. : The special movement of twisting along the long axis of the bone is called? (Medial and lateral rotation of the humerus)
Answers
The special movement of twisting along the long axis of thr bone, humerus, is called medial and lateral rotation.
The movement of the limbs about their long axis is referred to as medial and lateral rotation:
A rotational movement toward the midline is referred to as medial rotation. Internal rotation is another name for it. We need to consider two possibilities in order to comprehend this. First, rotate a straight leg such that the toes point inside. Hip medial rotation looks like this. Second, picture your elbow at a 90-degree angle as you carry a tea tray in front of you. Now turn the arm to point your hand in the direction of your opposite hip (elbow still at 90 degrees). This is shoulder internal rotation.
A rotational movement distant from the midline is called a lateral rotation. This is the polar opposite of the motions previously mentioned.
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Which substances are inorganic compounds?
Answers
Answer:
Inorganic compounds are not derived from living things. They tend to be minerals or geologically based compounds without C-H bonds. Inorganic compounds consist of single element, salts, metals, sediments and ores.
Explanation:
What is the main purpose of the light-dependent reactions?
to make oxygen
to make glucose
to produce carbon dioxide
to energize electrons
Answers
Because light is needed for oxygen
Answer: the correct answer actually is to energize electrons.
Explanation: I took the test and it was right.
Homeostasis is the process of maintaining a cell's environment. this includes the regulation of calcium ion (ca+) concentration within the cytoplasm. if too much ca+ is inside a cell, how can the concentration be changed?
Answers
Homeostasis is the process of maintaining a cell's environment. this includes the regulation of calcium ion (ca+) concentration within the cytoplasm. If too much ca+ is inside a cell Excess Na+ ions will be transported out through membrane protein channels.
The constant internal, external, and chemical conditions that biological systems maintain are known as homeostasis. The organism must keep a number of variables, including body temperature and fluid balance, within prescribed ranges in order to function at its best.
The homeostasis of the organism maintains optimal levels of enzyme and cell activity. It is the preservation of a constant internal environment despite changes in internal and external environments. One of these is controlling the body's blood glucose levels. A protein channel, which acts as a pore in the membrane to let water molecules or small ions pass through quickly, is an example of a transport protein.
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a(n) neuron carries information from the central nervous system (cns) to skeletal muscle in the periphery. group of answer choices afferent inter efferent ganglion sensory
Answers
An motor neuron carries information from the central nervous system (CNS) to skeletal muscle in the periphery.
What is Central nervous system?
The brain and spinal cord make up the central nervous system (CNS).It is one of 2 elements of the nervous system. The other component is the peripheral nervous system, which is made up of nerves that connect the brain and spinal cord to the rest of the body. The other component is the peripheral nervous system, which is made up of nerves that connect the brain and spinal cord to the rest of the body.
The central nervous system is the body's processing hub. The majority of bodily processes, including awareness, movement, thought, speech, and the five senses of sight, hearing, emotion, taste, and smell, are controlled by the brain.
The central nervous system (CNS) contains motor neurons in the spinal cord, which communicate with muscles, glands, and organs all over the body. All of our muscular movements are thus directly controlled by these neurons, which send impulses from the spinal cord to skeletal and smooth muscles (like those in your stomach). In reality, there are two different kinds of motor neurons: lower motor neurons, which travel from the spinal cord to muscles, and upper motor neurons, which travel from the brain to the spinal cord.
Hence a(n) motor neuron carries information from the central nervous system (CNS) to skeletal muscle in the periphery.
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PLEASE HELP!! I WILL GIVE 5 STARS AND HEART!!!
Darwin's experiments are just one way to study phototropism. A student wants to investigate the effects of phototropism in bean plants. She places a light source directly above one plant, at a forty-five-degree angle to another, and at a ninety‐degree angle from the third.
a. What is her independent variable?
b. What is a hypothesis she might write for her experiment?
Answers
Answer:
The independent variable is what is being changed or altered in the experiment (light position), the dependant variable is what is altered or changed by the independent variable (plant).
Explanation:
Consider what is being changed in this experiment to investigate the effects? The plant itself is not changed by the experiment but the positioning of the light source is. That is your independent variable.
The Hypothesis she will write
Researchers come up with their hypothesis based on the information they already know. So to write your hypothesis think about what you already know about phototropism. What do you think will happen to the plant in relation to the positioning of the lamp? Will the plant not move? Will it bend or move to face the lamp?
Which is an example of symbiosis? Which is an example of predator-prey?
Answers
A native species and a non native species are competing for resourses within the same ecosystem the non native specis is most likley to survive than the native spesis because
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Answer: since the the species is non-native it is most likely to not have any predators, while the native species will, because of this the non-native species will live longer
jessica expereinece difficulty keeping her balance after receiving a blow to the back of her head. it is likely that she injured her a. medulla b. thalamus c. hypothalamus d. cerebellum d. cerebellum
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The following a knock to the back of her head, Jessica had trouble maintaining her footing. Her cerebellum was probably damaged.
What are cerebellum's functions ?For postural modifications necessary to keep one's balance, the cerebellum is crucial. It adjusts motor neuron signals in response to vestibular receptor and proprioceptor information to account for changes in body position or variations in the stress placed on muscles.
How will a damaged cerebellum affect you?1) Loss of coordination of motor movement can result from cerebellar damage.
2) The incapacity to determine when to halt and at what distance.
3) the incapacity to carry out swift, alternating movements
4) Movement tremors.
5) wide-based, staggered walking
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An important study at a major university has determined that a chemical found in the typical American diet is extremely dangerous. Dihydrogen monoxide, which is added to many processed foods, has been linked to a number of deaths among people, especially swimmers. Although it is normally a liquid, in its gaseous state it can cause severe burns. Dihydrogen monoxide can even corrode metal. Many drivers involved in automobile accidents had drink dihydrogen monoxide shortly before driving. Why is this substance added to our food?
1.Write four questions that you could ask to determine whether the information about dihydrogen monoxide is biased
2.After reading this article, do you think that dihydrogen monoxide should be allowed in food?
3.If the author had used the common name of the compound, water, instead of dihydrogen monoxide, would you think that it should be allowed in food?
Answers
Substances added to food to maintain or improve food safety, freshness, taste, texture, or appearance are called food additives.
1. Dihydrogen Monoxide DHMO is a colorless and odorless chemical compound.
2. Yes, dihydrogen monoxide should be allowed in food.
3. The common name of the compound is hydrogen oxide.
Antioxidant Prevents food from rancidity and discoloration by reducing the ability of fats to bind oxygen. color Emulsifiers stabilizers gelling agents, and thickeners these help mix or thicken the ingredients. Preservatives are used to keep food safe for longer. Antimicrobials stop the growth of mold bacteria, and yeast keeping food fresher for longer. Antioxidants work by slowing the oxidation of fats the process that causes food to become rancid.
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A doctor injects a patient with what the doctor thinks is an isotonic saline solution. The patient dies, and an autopsy reveals that many red blood cells have been destroyed. Do you think the solution the doctor injected was really isotonic?.
Answers
No, the solution the doctor injected was not really isotonic but hypotonic.
There are three terms used to describe whether a solution will cause water to move into or out of a cell. They include: hypertonic, hypotonic, and isotonic.
A hypotonic solution has less solute and more of solvent. When an hypotonic solution is injected into the body, more water floods the cells and this could lead to bursting or destroying of the red blood cells.
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a researcher is studying transcription in cultured human cells. after she treats these cells with a special culture medium, the human cells begin to divide. in these actively dividing cells, genes encoding which of these rnas will be transcribed the most in the nucleus?
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Answer:
tRNAs and rRNAs
Explanation:i did this out of my own will hope it helps though
How blood is transported from the vena cava to lungs?
Answers
Answer:Blood is transported from the vena cava to the lungs in the following steps:
Blood enters the heart at the right atrium.Then the atrium contracts, and
the atrio-ventricular valves open.
This causes blood to pass into the right ventricle.
Then the ventricles contract, and
the semilunar valves open.
This causes blood to pass from the pulmonary artery to the lungs.
Explanation:
Could anyone help me with these two questions?
1. All of the below describe an enzyme EXCEPT which condition?
A. It is consumed during the reaction.
B. It binds with a substrate forming an enzyme-substrate complex.
C. It reduces the amount of energy required by a reaction.
D. It yields products that are different than the original substrate.
2. Unsuitable pHs to the particular enzyme results in what?
A. Faster enzymatic activity
B. Greater enzymatic activity
C. Less enzymatic activity
D. Denaturation of the enzyme
Answers
(1) It reduces the amount of energy required by a reaction.
(2)Less enzymatic activity
What are enzymes?A protein usually invariably makes up an enzyme, a biological catalyst. The cell's particular chemical reaction is accelerated by it. Throughout the reaction, the enzyme is not destroyed and is continuously utilised. Enzymes, which are essentially proteins, are created by living things in order to trigger specific metabolic and biochemical processes in the body. They have the power to catalyze biological processes and quicken internal chemical reactions. Names for enzymes frequently end in -ase and are derived from either the substrate they catalyze or the chemical process they catalyze. DNA polymerase, lactase, and alcohol dehydrogenase are a few examples. The term "isozyme" refers to different enzymes that catalyze the same chemical process. The proteins known as enzymes aid in accelerating chemical processes in our bodies. For digestion, enzymes are crucial.
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CAN SOMEONE PLEASE EXPLAIN THIS!!! DONT NEED ANSWER NECESSARY JUST EXPLAIN HOW TO DO pleaseee thank you
Answers
Crossing over is important for the normal segregation of chromosomes during meiosis. Crossing over also accounts for genetic variation, because due to the swapping of genetic material during crossing over, the chromatids held together by the centromere are no longer identical.
How does crossing over affect variation in offspring?This mechanism leads to novel allele combinations in the gametes (egg or sperm) generated, ensuring genetic variety in any baby born. A piece of one chromosome is swapped for another during crossing over. A hybrid chromosome with a distinctive genetic material pattern is the end outcome. After crossing over, gametes acquire the capacity to be genetically distinct from their nearby gametes. A piece of one chromosome is swapped for another during crossing over. A hybrid chromosome with a distinctive genetic material pattern is the end outcome. After crossing over, gametes acquire the capacity to be genetically distinct from their nearby gametes.To learn more about crossing over affect variation in offspring refer to:
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Correct the image. Draw what it should look like for the potential crosses in the P generation.
Answers
The genotype of the parent with incomplete genotype in P generation for the given test cross should be Hh.
Genotype is the genetic constitution or makeup of an individual. It depicts the complete set of genes. The genotype is responsible for the different characteristics or traits.
Test cross is the type of cross performed to know the genotype of the dominant trait. In this the unknown genotype is crossed with a recessive set of alleles. If the cross gives any recessive offspring then the unknown genotype is heterozygous for the dominant trait. This is the reason why the given cat in the image has Hh genotype as one of the offspring has hh genotype.
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Compared to oil and gas, nuclear energy…
1. produces about the same air pollution.
2. produces less air pollution.
3. produces more air pollution.
Answers
Which of the following cells is accurately matched with its description?
red blood cells: anuclear
skeletal muscle cells: mononuclear
skin cells: anuclear
neurons: multinuclear
Answers
Red blood cells is anuclear is accurately matched with its description.
RBC are biconcave and anucleate disc with 7-8µm in diameter. Absence of nucleus allow RBCs to be bowed to pass through capillary . This deformed shape offers maximum surface area for gaseous exchange .lack of a nucleus enables the rbc to have more room to contain hemoglobin which increases its efficiency to carrying oxygen.
Platelets are small anucleate blood cells derived from megakaryocytes. The red blood cell of many organisms lacks a complete nucleus, while some organisms have a nucleus, but it's damaged during the maturation of red blood cells.
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Most of the DNA in a cell is found in the nucleus. What other organelle also contains DNA?
endoplasmic reticulum
Golgi apparatus
ribosomes
mitochondria
Answers
Answer:
the mitochondria
Explanation:
it's responsible for the process of cellular respiration