Why is it more ethical to test for the waste products of respiration rather than the reactants
Answer:
The knowledge of simple biological reactions tells us that the product of reactions results from the complete or partial use of the reactants. In some reversible reactions, products can be converted to reactants in equal volume. Hence, in reactions that cannot be reversed, as evident in respiration, its waste products can be used to indicate that indeed respiration did take place. When glucose is consumed it is broken down through a series of reactions to give carbon dioxide and water as waste products.
Explanation:
Which of these organisms has an internal structure made of bone and cartilage?
A. Organism I
B. Organism Il
C. Organism Ill
D. Organism V
Answer:
im pretty sure its c
Explanation:
Organism Ill has an internal structure made of bone and cartilage.
What is Internal structure?The internal structures of an animal are essential to its survival. For example, inside their bodies, a lot of animals (including you!) have a heart. The heart works as a pump to move blood through the animal's blood vessels.
Blood vessels are like highways that travel to every inch of your body. The blood inside the vessels contains important chemicals that your body uses to grow and work, like nutrients, and hormones.
The stomach is an important internal structure because it's where an animal gets nutrients. First, the animal eats food, and then the stomach breaks that food down, sending the good nutrients to the blood and getting rid of everything else.
Therefore, Organism Ill has an internal structure made of bone and cartilage.
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A cell lacking the ability to make and secrete glycoproteins would most likely be deficient in its?
A cell lacking the ability to make and secrete glycoproteins would most likely be deficient in its extracellular matrix and Golgi apparatus.
Molecules known as glycoproteins (glycol = sugar, protein = protein) include both a sugar group and a protein group. These chemicals play crucial structural and signaling roles in living things.Proteins that are secreted from the cell are packaged in the Golgi apparatus. Glycoproteins with their sugar groups attached are aimed for secretion in the Golgi. Once secreted, glycoproteins play a significant role in creating the extracellular matrix. However, nuclear DNA contributes to both secreted and intracellular proteins, thus cells that just have problems producing and secreting glycoproteins would not be missing in this.learn more about glycoproteins here: https://brainly.com/question/25285228
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clonal selection question 10 options: a) happens only when b cells become plasma cells. b) happens only with b cells that produce ige. c) affects only memory cells. d) occurs with both t cells and b cells.
Clonal selection occurs with both T cells and B cells.
Define clonal selection.
To respond to infections, the body creates B and T cells through a process known as clonal selection. These cells can recognize particular viruses because they each have a different set of receptors. The B and T cells that can identify the intruder grow quickly to produce an army of cells to combat the infection when it enters the host.
Random mutations during clonal expansion result in the development of B cells with higher antibody-binding affinity for their antigens during clonal selection. Secondary immune responses are so successful at preventing reinfection by the same pathogen, which may be explained by the clonal selection hypothesis.
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given a 100 pound person breathing at a rate of 12 breaths/minute with a tidal volume of 300 ml/breath, what is the alveolar ventilation?
The alveolar ventilation for a 100-pound person breathing at a rate of 12 breaths/minute with a tidal volume of 300 ml/breath is 3.6 liters/minute.
Alveolar ventilation refers to the volume of fresh air that reaches the alveoli (tiny air sacs) in the lungs per minute. It is calculated by multiplying the tidal volume (volume of air inhaled or exhaled in one breath) by the respiratory rate.
In this case, the tidal volume is given as 300 ml/breath and the respiratory rate is 12 breaths/minute. To find the alveolar ventilation, we multiply these values:
Alveolar ventilation = Tidal volume x Respiratory rate
Alveolar ventilation = 300 ml/breath x 12 breaths/minute
First, we convert the tidal volume to liters:
300 ml/breath = 0.3 liters/breath
Then, we calculate the alveolar ventilation:
Alveolar ventilation = 0.3 liters/breath x 12 breaths/minute
Alveolar ventilation = 3.6 liters/minute
Therefore, the alveolar ventilation for a 100-pound person breathing at a rate of 12 breaths/minute with a tidal volume of 300 ml/breath is 3.6 liters/minute.
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Which is an example of pioneer species
Answer:
the answer is A:lichens
Explanation:
In 1986, a meltdown of a nuclear reactor in the city of Chernobyl, in Ukraine, released highly radioactive chemicals into the atmosphere. As a result, people suffered various forms of cancer because of exposure to these radioactive chemicals. Cancerous cells divide much more often than noncancerous cells and form tumors in the body.
A scientist claims that these cancers were caused by harmful mutations. He wants to make a model to support his claim.
Which statement best describes what the scientist’s model needs to represent in order to support his claim?
A)
The radioactive chemicals burned people’s skin, which increased cell division rates in the people who developed cancer.
cross out
B)
The radioactive chemicals polluted people’s food, which changed some people’s ability to digest proteins and caused cancer.
cross out
C)
The radioactive chemicals caused structural changes in people’s genes, which changed how proteins functioned in cell division.
cross out
D)
The radioactive chemicals polluted people’s drinking water, which caused cells to divide more quickly in the people’s bodies and form tumors.
WHO EVER ANSWERS RECEIVE BRAINILEST
Answer:
C: The radioactive chemicals caused structural changes in people’s genes, which changed how proteins functioned in cell division.
Explanation:
Which of the following events does not usually occur during interphase?
(a) Cells grow in size.
(b) The nuclear envelope breaks down.
(c) DNA is replicated.
(d) The centrosomes are duplicated.
The event that does not usually occur during interphase is the nuclear envelope breaking down. The correct answer is option b.
During interphase, which is the longest phase of the cell cycle, several events occur in preparation for cell division. These events include cell growth, DNA replication, and duplication of cellular organelles. However, the breakdown of the nuclear envelope typically occurs during a specific phase of cell division called mitosis, not during interphase.
During mitosis, the nuclear envelope disassembles to allow for the separation of replicated chromosomes and the formation of the mitotic spindle. Once mitosis is complete, the nuclear envelope reforms around the separated chromosomes to create two new nuclei in the daughter cells.
So, the correct answer is option (b) The nuclear envelope breaks down.
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How does acid rain cause animals to suffer?
their habitats are destroyed by the severe weather rain can bring
animals can only find food in dry weather so they often go hungry during rain
O acid rain causes their to be less plants for animals to eat
acid rain is only a problem for humans
Acid rain harms numerous animals and plants. Thus, the food web suffers. Acid rain kills lake phytoplankton. As a result, phytoplankton-dependent insects die. Therefore, option (C) is correct.
What is acid rain?Acid rain, also known as acid deposition, is an all-encompassing word that refers to any form of precipitation that contains acidic components, such as sulfuric or nitric acid, and that falls to the ground from the atmosphere in either a wet or dry form. Acid precipitation can take several forms, such as rain, snow, fog, hail, or even dust.
Rain that contains acid can provide significant challenges for a wide variety of flora and fauna. As a direct consequence of this, the entire food web is disrupted. For instance, phytoplankton in lakes might perish as a direct result of acid rain. As a result of there being less phytoplankton available, the insects, which get their nutrition from it, are starting to starve to death.
Therefore, option (C) is correct.
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What is the difference between an infectious disease and a noninfectious disease?
A)the length of the disease
B)the severity of the disease
C)the cause of the disease
D)whether the disease is fatal
Answer:
A
Explanation:
Albinism is a recessive trait. A man and woman are both of normal pigmentation, but both have one parent who is albino (without melanin pigmentation). What is the probability that their first child will be an albino
Answer:
use the generation tree starting by the grandparents as first generation and the parents as second generation until the child as third generation
compare nervous system and endocrine system
Explanation:
The nervous system has electrical impulses which are the messengers in the nervous system.
The endocrine system has hormones which are the chemical messengers in the endocrine system that target cells through the bloodstream
What is the importance of cleavage in embryonic development.
Cleavage is important in embryonic development as it allows for rapid cell division without increasing the overall size of the embryo.
Cleavage is the process of cell division, specifically in the early stages of embryonic development.
It is a vital step in creating a multicellular organism from a single fertilized egg (zygote).
During cleavage, the zygote divides into multiple cells, known as blastomeres, without growing in size.
This ensures that the cells remain small, which facilitates efficient nutrient uptake and waste removal, as well as rapid cell-to-cell communication.
Additionally, cleavage helps in establishing the basic body plan and laying the foundation for further development of the embryo, such as differentiation into specialized cell types.
Summary: In embryonic development, cleavage is crucial for rapid cell division, maintaining efficient nutrient exchange and communication, and setting the foundation for the embryo's body plan and further development.
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Name and explain three different ways micro organisms obtain energy
Answer:
consume other organisms because they can't perform photosynthesis.
Perform photosynthesis because they have chloroplasts.
Decompose decaying matters because they evolved to do that.
What is the process of exchanging oxygen and carbon dioxide called?
Answer: Respiration or Gas exchange in some sources
Explanation:
a bacterium has a special need for 6-phosphogluconate. what precursors and possible cofactors are needed in the most efficient (fewer number of enzymes) to generate this? (if multiple substrates would be created, assume they can be easily recycled.) products from nucleic acid catabolism intermediates from glycolysis glucose-6-phosphate from glycogen and nadp glucose-6-phosphate from glycogen and nadph products from nucleic acid catabolism and nadph
Answer:
To generate 6-phosphogluconate, the bacterium would need precursors from nucleic acid catabolism and intermediates from glycolysis. The bacterium would also need the cofactors NADP and NADPH. These precursors and cofactors can be obtained from the breakdown of glycogen, as well as from the catabolism of nucleic acids. In the most efficient pathway, the bacterium would use enzymes to convert these precursors and cofactors into 6-phosphogluconate. It is possible that additional enzymes and cofactors may be needed in this process, depending on the specific requirements of the bacterium.
In rabbits, brown fur color (F) is dominant to white fur color (f). If two rabbits with brown fur produce a baby with white fur, what are the genotypes of the parents?
A. FF and Ff
B. Ff and Ff
C. FF and FF
D. ff and ff
If two rabbits with brown fur produce a baby with white fur, the genotype of the parents is: Ff and Ff. The correct option is B.
What is a genotype?Genotype is the genetic material of the organism. There are two types of traits, the traits that are visible are phenotype characters and the inner traits are genotype characters.
Given, the dominant gene is F brown colored fur.
The recessive gene is f white-colored fur.
The punnet square
F x f
F FF Ff
f ff ff
Punnett square is crossed over between the parents. The parents are heterozygous.
The parents will be Ff and Ff and the baby produced will be two offspring will be of white fur.
Therefore, the correct option is B. Ff and Ff.
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Rough ER has ribosomes
attached to it. The ribosomes
attached to the rough ER
create proteins for transport.
What type of proteins are
produced by rough ER?
A. proteins that dissolve immediately
B. proteins that take DNA into the nucleus
C. proteins for transport
Answer:
C
Explanation:
The type of proteins that are produced by rough ER are "proteins for transport".
The ribosomes attached to the rough ER create proteins that are then transported to other parts of the cell or to other cells. These proteins can have a variety of functions, such as serving as enzymes or structural components of the cell. The rough ER gets its name from the ribosomes attached to it, which give it a "rough" appearance under a microscope.
Which of the following prompts are correct regarding a mitochondrion? Check All That Apply Powerhouse of the cell Only organelle to use oxygen U Site of photosynthesis Energy is released when C-C bonds of nutrients are broken U Converts pyruvate or acetyle CoA to CO2 Uses CO2 from the air
Regarding mitochondria, the correct statements are - Powerhouse of the cell, Only organelle to use oxygen, Energy is released when C-C bonds of nutrients are broken, Converts pyruvate or acetyl CoA to CO2.
The powerhouse of the cell: Correct.The mitochondrion is often referred to as the powerhouse of the cell because it plays a crucial role in generating cellular energy in the form of adenosine triphosphate (ATP) through the process of cellular respiration.
Only organelle to use oxygen: Correct.Mitochondria are the primary organelles involved in aerobic respiration, which requires oxygen as the final electron acceptor in the electron transport chain.
Site of photosynthesis: Incorrect.Mitochondria are not involved in photosynthesis. Photosynthesis occurs in chloroplasts in plant cells, while mitochondria are present in both plant and animal cells and are responsible for cellular respiration.
Energy is released when C-C bonds of nutrients are broken: Correct.Mitochondria participate in the breakdown of nutrients, such as glucose, through a series of biochemical reactions, including glycolysis, the citric acid cycle (also known as the Krebs cycle), and oxidative phosphorylation.
During these processes, carbon-carbon (C-C) bonds are broken, releasing energy.
Converts pyruvate or acetyl CoA to CO2: Correct.In the citric acid cycle, pyruvate, derived from glycolysis, is converted to acetyl CoA, which then enters the cycle. In this process, carbon dioxide (CO2) is released as a byproduct.
Uses CO2 from the air: Incorrect.While plants utilize carbon dioxide from the air during photosynthesis, mitochondria do not directly utilize CO2 from the environment. They primarily use oxygen (O2) in cellular respiration.
Based on the correct statements, the options would be: The powerhouse of the cell, the Only organelle to use oxygen, Energy is released when C-C bonds of nutrients are broken, and it Converts pyruvate or acetyl CoA to CO2.
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Why does the lethal “b” allele affect more males than females?
In female mammalian cells, one X chromosome of the two would undergo random inactivation early in embryonic life, and therefore both males and females have a single active Y. with this the disease has a predilection in men because women do not carry the Y gene
What are the consequences of lethal alleles?Recessive lethal alleles cause death when they are homozygous. Death occurs at the stage when the product of this gene is needed. If the gene in question is responsible for the synthesis of a particular protein in early childhood, for example, the organism will die at that moment.
With this information, we can conclude that Y chromosome, is what guarantees the development of a male embryo and the lethal “b” allele
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Please help asap :(((((
Determine whether human and chimpanzee mitochondrial DNA sequences have equal evolutionary rates between lineages. To do this, use Tajima’s relative rate test as implemented in MEGA. (1) Obtain MEGA software. (2) Obtain mitochondrial DNA sequences from human, chimpanzee, bonobo, orangutan, gorilla, and gibbon (3) Apply Tajima’s test using an appropriate outgroup. Is the probability value significant (< 0.05)? Include pictures of everything if possible
Tajima's relative rate test is used to compare the evolutionary rates between different lineages by analyzing the divergence of DNA sequences.
To determine whether human and chimpanzee mitochondrial DNA sequences have equal evolutionary rates between lineages, Tajima's relative rate test can be applied using MEGA software.
The steps involved are as follows:
Obtain MEGA software: Download and install MEGA software, which is a widely used tool for molecular evolutionary analysis.
Obtain mitochondrial DNA sequences: Collect mitochondrial DNA sequences from human, chimpanzee, bonobo, orangutan, gorilla, and gibbon. These sequences can be obtained from databases or through relevant research studies.
Apply Tajima's test with an appropriate outgroup: Use MEGA software to perform Tajima's relative rate test. Select an appropriate outgroup, which could be a closely related species or a known reference sequence.
Analyze the results: The output of Tajima's test will include statistical measures such as probability values. Check if the probability value is significant (less than 0.05). If the probability value is below the significance threshold, it indicates that the evolutionary rates between human and chimpanzee mitochondrial DNA sequences are significantly different.
In conclusion, by applying Tajima's relative rate test using MEGA software and appropriate mitochondrial DNA sequences, one can determine the significance of the evolutionary rate differences between human and chimpanzee lineages.
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What process allows a single-celled zygote to become a multicellular organism with thousands, millions, or billions of individual cells?
OA. Intensification
OB. Specialization
OC. Restructuring
OD. Cellular division
Answer:
OD. Cellular division
pls help! due today and not sure what the answer is
Answer:
c
Explanation:
Cellular Respiration crossword puzzle pls help
Question 2 (Multiple Choice Worth 2 points)
(01.02 MC)
Sucrose and lactose are two carbohydrates that have the same molecular formula (C12H22011). Which of the following
O They are made up of differentlmino acids.
O They are monosaccharides with different atoms bonded to their rings.
O They each have two glucose molecules, but the arrangement differs.
O They are made of different combinations of monosaccharides.
Question 3(Multiple Choice Worth 2 points)
Answer:
Last one is correct
Explanation:
Sucrose is made of glucose and fructose
Lactose is made of glucose and galactose
one way mistakes during the cell cycle could result in problems (G2)
Answer:
If cells that aren't genetically correct don't conduct apoptosis, it could cause cancers. Tumors are chunks of genetically incorrect cells. They could be incorrectly copied during mitosis.
Four of the following are major human activities that disrupt and degrade freshwater systems; one is not. Choose the one that is not.
Thickness of the ozone layer id not the one that disrupt and degrade freshwater systems.
The stratosphere, 15–40 km above the earth's surface, may include the ozone layer. Under typical pressure and temperature circumstances, the ozone layer in the stratosphere is between 2 and 5 mm thick, and the amount of ozone present varies by season, hour of the day, and location. Ozone builds up in the polar area due to poor photochemical depletion and ozone transfer from the equator. In the absence of other ozone-disturbing components, the highest ozone values are therefore observed over the Polar regions in winter. Wetlands are often referred to be areas of land that are either permanently saturated with moisture or immersed in shallow water.
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Bloodtype phenotype Genotype
A+
B+
A-
B-
AB+
O+
O-
Answer:
The genotype must be AB. Someone with blood type O has neither the A nor the B allele.
Explanation:
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brainliest for the brains:)
Recall that the Sun, like Earth, can be divided into layers called zones. Nuclear fusion occu
in this layer, or zone, of the Sun.
The answer choices
The convection zone
The photosphere
The radiative zone
The core
Answer: The sun glows because of nuclear fusion that takes place in its core. What do nuclear reactions on the sun produce? Nuclear reaction inside the Sun is fusing of Hydrogen to Helium and release out.
Explanation: (I think this your answer) Good Luck