Answers
Explanation:
1 chemical reaction endothermic
2 physical change. exothermic
3 chemical reaction endothermic
Answer:
1. Chemical reaction | Endothermic
2. Physical change | Exothermic
3. Chemical reaction | Endothermic
Explanation:
• Chemical reaction or Physical change?
A chemical reaction occurs when one or more substances converted into one or more different substances; they are usually irreversible.
A physical change occurs when the state of matter, or any other physical property, of a substance changes; they are usually reversible.
• Endothermic or Exothermic?
An endothermic reaction or change is one in which the system takes in thermal energy.
An exothermic change is where thermal energy is given out by the system.
Related Questions
complete the sentence:
primary consumers receive about _________ of the energy available in biomass from producers.
A. 100 percent
B. 50 percent
C. 35 percent
D. 10 percent
Answers
Answer:
D. 10 percent
Explanation:
) If you are a good school agriclture focal person, what type of forming would you suggest to the school? Give reasons. Teacher's Signature. ) If you are a good school agriclture focal person , what type of forming would you suggest to the school ? Give reasons . Teacher's Signature .
Answers
Answer:
Farm-to-school programs are a great way to get students excited about healthy eating.
Explanation:
How do we investigate translocation using the ringing experiment?
Answers
Translocation can be investigated by using the ringing experiment, while peeling and removing the bark and phloem of a plant.
What is translocation?Translocation can be defined as a biological process which involves the transfer (movement) of water and other soluble nutrients from one part of a plant to another, especially through the xylem and phloem.
Generally, translocation can be investigated by using the ringing experiment, while peeling and removing the bark and phloem of a plant. Also, if sucrose is present, it would cause a swell and thus indicating translocation.
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Correct Value: 12.75
8.5
8.4
8.4
8.3
Answers
I don't understand your question maybe try rephrasing?
What 4 features do all chordates have?
Answers
All chordates share some structures during at least some stage of their development. These are the notochord, nerve cord, pharyngeal slits, and tail.
What are chordates?When talking about chordates we are referring to the chordate phylum. Individuals composing this group share four main structures,
Notochord
The notochord is a dorsal spine precursor from which the nervous system gets formed.
The notochord is present during the whole individual's life (like some tunicates) or during only the embryonary period (like vertebrates).
Nerve cord
The nerve cord is dorsally located, together with the notochord.
It is hollow, and, during embryogenesis, it might differentiate into a brain.
This cord connects external stimuli to the motor system to react to them.
Pharyngeal slits
Present only during a period of the embryonary stage. These slits give rise to different organs and structures like tonsils, ears, or gills.
Tail
All chordates have a tail in at least a period of the organism's development.
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Jake wants to enrich the nitrogen content of his soil through fixation which crop can he use for this purpose
Answers
Answer:
He can use beans since it is a legume and legumes have root nodules that facilitate nitrogen fixation
All of the following organisms are involved in carbon fixation EXCEPT Group of answer choices green and purple sulfur bacteria. cyanobacteria. lichens. algae. mycorrhizae.
Answers
Answer:Mycorrhizhae
Explanation:
What are the adheres junctions?
Answers
Adherens junctions (AJs) are defined as cell-cell adhesion complexes that are progressively assembled and disassembled.
What are Adherens junctions?Adherens junctions (AJs) are defined as cell-cell adhesion complexes that are progressively assembled and disassembled. This assembling operation allows cells within a tissue to respond to forces, biochemical signals as well as other structural changes in their microenvironment.
The functions of Adherens junctions are;
Initiate cell-cell contacts.Mediate the maturation.Maintenance of the contact.Read more about Adherens junctions at; https://brainly.com/question/24881456
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A ________________ is a group of microbes growing in a nutrient-rich environment.
Answers
A culture is a group of microbes growing in a nutrient-rich environment.
What is culture?A culture refer to a media which contain nutrients or nutritious substances that support the growth and replication of micro organisms.
Therefore, A culture is a group of microbes growing in a nutrient-rich environment.
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What type of small insects do some ants “farm”?
Answers
Answer:
Ants and aphids have a special relationship, mutualistic in nature
Explanation:
hey each benefit from one another; ants protect aphids and aphids feed ants. Aphids feed their farmer ants a sweet honeydew liquid in exchange for protection from predators.
proteins not expressed on normal cells but found on tumor cells are called _____.
Answers
Proteins not expressed on normal cells but found on tumor cells are called tumor specific antigen.
What are cancer cells?Cancer cells are cells whose cells cycles and growth has been altered as a result of mutation in their DNA resulting in abnormally high growth rates.
Cancer cells are also called tumor cells.
Proteins that are expressed in tumor cells but not on normal cells are called tumor specific antigen.
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tuberculosis, botulism, and tetanus are examples of diseases caused by rod-shaped bacteria known as ______________.
Answers
Bacilli is a rod shaped bacteria that cause diseases like tuberculosis, botulism, and tetanus.
What is Bacilli?Bacilli refer to a group of bacteria that is small, rod shaped and also a gram positive bacteria which causes diseases or infections on their host. They normally transmit diseases through infected food, water and animal bite.
Therefore, Bacilli is a rod shaped bacteria that cause diseases like tuberculosis, botulism, and tetanus.
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Select the correct answer from each drop-down menu.
The nervous system and the muscle system respond to stimuli to produce motion. The movements of
muscles are mostly voluntary. Involuntary movements occur in these muscles when the nerve impulse passes from a sensory neuron to a motor neuron via an interneuron in the
.
Answers
The nervous system and muscular system respond to stimuli to produce movement.
What is nervous impulse?
The nerve impulse corresponds to an electrical current that propagates through neurons, thanks to a process of membrane depolarization. This depolarization process occurs through stimuli and its function is to transmit certain information to other cells (nervous, muscular or glandular).
With this information, we can conclude that the nervous system and muscular system respond to stimuli to produce movement.
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Answer:
skeletal
spinal cord
Explanation:
just took test on edmentum and got 5/5
1.Explain Cytotaxonomy and Chemotaxonomy and Numerical Taxonomy.
2.Difference Between Chemotaxonomy And cytotaxonomy?
Answers
Answer:
Cytotaxonomy refers to the classification of biological materials based upon similarities and differences of cellular structure and number of chromosomes present in the cell afterwards while .:::: chemotaxonomy refers to the classification of biological materials based upon similarities and differences of the ...Chemotaxonomy is based on the similarities and differences in biochemistry such as a sequence of amino acids in proteins, whereas, cytotaxonomy is the classification based on cellular characteristics such as chromosomes number and behaviour.the membrane that forms a compartment inside the stroma is the ____
Answers
In chloroplasts there are structures known as thylakoids. The membrane that forms a compartment inside the stroma is the thylakoid membrane.
What is the chloroplast structure?The structure of these organelles is as follows,
Chloroplasts are limited by an outer membrane and an inner one. In between the two membranes, there is a space left called intermembrane space. In the interior of the inner membrane, there is another space known the stroma. Within the stroma, there is the third system of membranes, known as thylakoids. Thylakoids are disk-shaped structures limited by a membrane, and in their interior, there is a space named thylakoid space.These structures are arranged as piles, receiving the name of grana. Grana connects by a larger thylakoid membrane. The photosynthetic pigments are placed in the thylakoids, where occurs light-dependent reactions.According to this description, the membrane that forms a compartment inside the stroma is the thylakoid membrane.
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A solution that has an osmotic pressure less than that of red blood cells is called:.
Answers
A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in:.
Answers
A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in an increase in blood flow through the vessel.
Meaning of smooth musclesmooth muscle can be defined as a muscle in the body that is non striated and involuntary in nature.
Smooth muscles are mostly found in hollow organs, passageways and tracts of some systems.
In conclusion, A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in an increase in blood flow through the vessel.
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Sphingosine is not a component of:
Answers
According to the research, sphingosine is an aminoalcohol that forms ceramides and is not a component of cardiolipin.
What is sphingosine?It is an aminoalcohol that is found in most of the sphingolipids of animal tissues.
It intervenes in cellular metabolic regulation processes related to lipid signaling pathways.
Therefore, we can conclude that according to the research, sphingosine is an aminoalcohol that forms ceramides and is not a component of cardiolipin.
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A car with a mass of 1,324 kilograms, traveling at a speed of 20 meters/second, crashes into a wall and stops. What is the kinetic energy after this perfectly inelastic collision?
Answers
The kinetic energy of a car with a mass of 1,324 kilograms, traveling at a speed of 20 meters seconds is 264800J.
How to calculate kinetic energy?The kinetic energy of a moving car can be calculated using the following formula:
K.E = ½ × m × v²
Where;
K.E = kinetic energym = mass v = velocityK.E = ½ × 1324 × 20²
K.E = 264800J
Therefore, the kinetic energy of a car with a mass of 1,324 kilograms, traveling at a speed of 20 meters seconds is 264800J.
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why do we not see other components of cell? are they absent?
Answers
Answer:
They are microscopic (small) and they are protected by the outer wall/membrane
Explanation:
Question 13 of 25 skin stem cells can only produce other skin cells. what does this indicate about skin stem cells?
Answers
Answer:
That they are unipotent
Information collected directly with the senses is
Answers
The first true antibiotic was __________, which was discovered by __________. View Available Hint(s)for Part A streptomyces; Selman Waksman penicillin; Alexander Fleming arsenic compounds; Paul Enrich sulfanilamide; Gerhart Domagk
Answers
Answer:
penicillin, Alexander Fleming
would cause evolutionary change in animal populations that colonize a new environment as its conditions differ from those found in their home?
Answers
Gene flow would cause an evolutionary change in animal populations that colonize a new environment as its conditions differ from those found in their home.
What is Gene flow?In genetics, the expression 'gene flow' refers to the migration of organisms or movement of their reproductive germinal cells to a new place.
Gene flow is well known to alter the genetic structure of the population in the site where it occurs.
In conclusion, gene flow would cause an evolutionary change in animal populations that colonize a new environment as its conditions differ from those found in their home.
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What is the name of the Coenzyme that binds with Acetyl Acid?
Answers
The name of the coenzyme is Coenzyme A.
Citric acid cycleThe intermediate step between glycolysis and the citric acid cycle is the production of acetyl-co A.
Acetyl-co A is produced by the oxidative decarboxylation of the pyruvate molecule generated from glycolysis in the matrix of the mitochondrion.
The pyruvate molecule is first transformed into an acetyl group. The enzyme, Coenzyme A, binds with the acetyl group to form acetyl-co A.
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The p wave on an electrocardiogram (ecg) represents the depolarization of cells in the:
Answers
The p wave on an electrocardiogram (ecg) represents the depolarization of cells in the sinoatrial (SA) node.
What is sinoatrial node?The sinoatrial node is close to the opening of the superior vena cava. This bundle of nerve tissue propagates electrical impulses and therefore governs sinus rhythm from minute to minute.
Electrocardiogram is a test, it is possible to detect the rhythm of the heart and the number of beats per minute.
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What types of animals are simians?
Answers
Simians are a group of higher primates animals such as monkeys, apes, and humans.
What are simians?Simians are a taxonomic category of animals under the primate order.
Primates are divided into Simians and Prosimians. Simians are more advanced than Prosimians.
Humans belong to the primate order and are classified as Simians along with other animals such as monkeys and apes.
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When you hold a mug of hot cocoa,you feel a change in temperture.how does the skin detect this change?
Answers
Answer:
sensory receptors in the skin detect the stimuli from the environment
Explanation:
What is muscular dystrophy example of
Answers
Muscular dystrophy is an example of a genetically heritable disease that is autosomal dominant.
What are autosomal dominant diseases?Autosomal dominant diseases or abnormalities are genetic diseases that are heritable just by inheriting an affected allele from either of the parents.
Unlike autosomal recessive diseases which require that alleles are inherited from the two parents, autosomal dominant diseases can be inherited from either of the parents.
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The bacterial species Heliobacter pylori has been associated with the formation of stomach ulcers. The bacteria burrows into the mucosal lining of the stomach, degrading it and forming a hole. What type of innate defense is this bacteria overcoming
Answers
The type of innate defense this bacteria is overcoming is referred to as mechanical barrier.
What is Innate defense?This is referred to as the defense system which came with birth and they help protect the body from antigens.
The bacteria in this context also functions this way through overcoming mechanical barriers to attack the party of the body involved.
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