Answer:
white blood cells that systematically envelop and kill pathogens such as bacteria, viruses, and fungi, worn-out body cells, and cells that have become cancerous. their surface fragments, called antigens, literally antibody generators.
Explanation:
Why does scattering of light occur ?
Hi please answer the following questions
•Mercury is used in temermeter.Give reason!
•Name two non flowering plants
•Some leaves are modified to trap insects. Give reason.
Answer:
It's used in thermometers because it has high coefficient of expansion.
conifers,mushrooms
plants trap insects because they grow in soil which is usually thin and is also poor in nutrients , so they eat insects to fulfill their nuttient requirement
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Explica brevemente en que consiste la teoría de la deriva continental y menciona los contenientes que se crearon a partir de la Pangea
Esta teoría hace referencia al movimiento actual de las placas que sustentan los continentes y que se desplazan a lo largo de millones de años. En toda la historia geológica de la Tierra, los continentes no han estado siempre en la misma posición. Existe una serie de evidencias que veremos posteriormente que ayudaron a Wegener a refutar su teoría. El movimiento se debe a que continuamente está formándose nuevo material procedente del manto. Este material se crea en la corteza oceánica
Alto-cumulus clouds belong in which level of the atmosphere?
High level
Mid-layer
Low level
Very High level
Cloudlets, also known as altocumulus clouds, are tiny mid-level layers or patches of clouds that are most often seen as spherical clusters. Therefore, option (B) is correct.
What are alto-cumulus clouds?Cloudlets, also known as altocumulus clouds, are tiny mid-level layers or patches of clouds that are most often seen as spherical clusters. However, since there are so many different types of altocumulus, they may take on a variety of forms.
Indicators of convection, or increasing heat, in the atmosphere include altocumulus clouds. Warm air rises into the sky, where it cools and condenses nearby water droplets to create the cloud formations that we see from the ground.
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Lizard is a poikilothermic animal give reason please
Answer:
Both reptiles and amphibians are poikilothermic, which means that they cannot regulate their own body temperatures internally
How do buffers play a role in
homeostasis in living things?
Answer:
Buffers are commonly used in living organisms to help maintain a relatively stable pH.
In biological systems, chemical buffers prevent sharp and sudden changes in pH.
In biology, homeostasis refers to stable conditions required for the survival of organisms.The pH is a scale used to determine how acidic/basic water is. The pH range from 0 to 14 ( a pH equal to 7 is neutral).In human blood normal pH is about 7.35 to 7.45. A sudden change in this value alters and negatively affects the homeostasis of the body.The carbonic acid-bicarbonate is the most important chemical buffer which is used for mantaining acid-base balance (homeostasis) in the blood.The blood pH can change due to respiratory acidosis/alkalosis and metabolic acidosis/alkalosis.In conclusion, chemical buffers prevent sharp and sudden changes in pH.
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how do scientists test their hypothesis
a. stating a problem
b. conducting experiments
c. communicating results
d. stating a conclusion
Answer:
B
Explanation:
Answer:
B.
Explanation:
They conduct multiple experiments to test their theories and hypothesis, and if it comes out wrong, or different, they keep conducting experiments to find the correct answer or solution
Question 6 of 10
Which statement best describes the limits of science?
O A. Science cannot answer questions about the natural world.
OB. Science cannot answer questions about what people should do.
O C. Science can answer any question.
O D. Science can answer only mathematical questions.
SUBMIT
Answer:
I think B should be the answer because science cannot tell the future
PLEASE HELP MAX POINTS AND BRAINLIEST
Which of the following statements best proves that the law of conservation of mass is obeyed during photosynthesis?
a. The starting total number of oxygen atoms in carbon dioxide is equal to the ending total number of oxygen atoms in glucose.
b. The starting total number of oxygen atoms in carbon dioxide gas is equal to the ending total number of oxygen atoms in glucose and oxygen.
c. The total mass of glucose and oxygen formed from photosyntheesis is equal to the total mass of carbon dioxide and water used up during the reaction.
d. The total mass of glucose and carbon dioxide formed from photosynthesis is equal to the total mass of oxygen and water used up during the reaction.
c. The total mass of glucose and oxygen formed from photosyntheesis is equal to the total mass of carbon dioxide and water used up during the reaction. (right answer i believe)
The total mass of glucose and oxygen formed from photosyntheesis is equal to the total mass of carbon dioxide and water used up during the reaction.
The reaction is given by.
CO_2+H_2O—⟩C_6H_12O_6+O_2Determine which word best describes the function of
hormones.
A. Protein
B. Molecule
C. Growth
D. Communication
Answer:
d
Explanation:
Which of the following could your family do to lower its carbon footprint?
Answer:
That's correct
Explanation:
Insulating homes lower footprint
Set the thermostat 2 degree warmer in winters could lower your family carbon footprint.
What is carbon foot print ?
A carbon footprint is the total amount of greenhouse gases (including carbon dioxide and methane) that are generated by our actions.
What does reducing carbon foot print mean?Reducing your carbon footprint at home typically means consuming less energy.
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After photosynthesis, how will producers get their energy? Producers receive glucose from the intake of oxygen. Producers will release glucose into the atmosphere, feeding the ecosystem. Producers will create glucose, which is the primary source of food. Producers will receive glucose directly from any rainfall that occurs.
Answer:
After photosynthesis (Producers will create glucose, which is the primary source of food)
Explanation:
The biotic component of an ecosystem is made up of all living organisms in it. These organisms are divided into two main groups according to the way they feed:
--> Producers (autotrophs) and
--> Heterotrophs.
Producers are organisms that are able to use sunlight or chemical energy to manufacture their own food (glucose) from simple inorganic substances. This process is known as photosynthesis. Producers include all green plants, photosynthetic protists and some bacteria
Producers extract inorganic nutrients and chemical energy from their non-living environment, that is, from the abiotic component of the ecosystem. Since autotrophs are the only organisms that can produce food in an ecosystem, they are also known as PRIMARY FOOD PRODUCERS.
PRODUCERS use some of the food they produce for their activities and building their body tissues (growth). The rest is stored in various parts of the body.
Answer: Its C, Producers will create glucose, which is the primary source of food.
Explanation: The person above me is right and I also got it right on the test :) hope this helps.
cual es la energía que se encuentra ligada a la estructura de la materia.
Answer:La energía eléctrica o electricidad es un fenómeno físico que se produce a raíz de las cargas eléctricas y de la interacción entre ellas. De esta forma, son los electrones y los protones las principales partículas subatómicas responsables de su aparición.
Explanation:
why was domesticating and confining animals so important to the food supply of early civilization
Answer:
Image result for why was domesticating and confining animals so important to the food supply of early civilization
Throughout history, people have bred domesticated animals to promote certain traits. Domestic animals are chosen for their ability to breed in captivity and for their calm temperament. Their ability to resist disease and survive in difficult climates is also valuable.
Explanation:
Domestication of animals help the humans in many ways for eg; Cows and goats gave them milk and meat , Cattle also helped them in ploughing the fields also Cattle and sheep are kept for their wool, skins, mea,t and milk, large animals can also be used to do physical work like carrying things or plowing the field
which of the following best describes the anthers of a flower?
Answer:
The anthers of a flower are the Male reproductive organ on the top of the stamen, which produce pollen.
Escherichia coli infections Multiple Choice can cause an inflammatory disease similar to Shigella dysentery. include urinary tract infections from normal flora strains. All of these choices are correct. are often transmitted by fecal contaminated water and food. involve enterotoxin in traveler's diarrhea.
Answer:
E. All of the choices are correct.
Explanation:
Escherichia coli infections
A. are often transmitted by fecal contaminated water and food.
B. include urinary tract infections from normal flora strains.
C. involve enterotoxin in traveler's diarrhea.
D. can cause an inflammatory disease similar to Shigella dysentery.
E. All of the choices are correct.
Certain blood vessels that contain specialized sensors that detect the level of internal pressure and transmit messages to the nervous system, which then triggers the smooth muscle in the vessel walls to make any needed size adjustments. These sensors are called: Select one:
Both anaerobic and aerobic respiration use what to produce ATP and NADH?
Answer
glucozo
Explanation:
describe the role of enzymes in seeds germination
3. What is the change in a population's allelic frequency due to chance?
natural selection
gene pool
genetic drift
allelic frequency
Answer:
option c is the answer to this question
genetic drift is the answer
In the 1950s the structure of DNA was discovered by using models and x-ray chromatography currently science has used advanced technology to completely map out the genes in a human's body. What would be the best advantage of using this information?
Answer:
Gene therapy to correct defective genes that cause diseases.
Explanation:
Gene therapy refers to the procedure that involves the introduction of nucleic acids (DNA or RNA) into the cells of an organism for the purpose of correcting abnormalities, such as a mutations or in other words to treat a genetic disease.Gene therapy entails bringing a normal and functional gene known as a trans-gene into a cell with altered gene. Another method can bring RNA capable of partially regulating or blocking the expression of an altered gene.The nucleic acids are introduced into the patient's cells by means of a viral vector or injected directly into the cells in the form of naked DNA.pls mark brainliest
How does the amount of food in a meal effect the time it takes to digest it?
A light meal can be digested in one to two hours, but heavy meals can take up to six.
A light meal can be digested in three to four hours, but heavy meals can take up to eight.
The body digests food at the same rate no matter the quantity.
A medium meal can be digested in one to two hours, but heavy meals can take up to six.
Answer:
The correct answer is:
Explanation:
Option A is the correct answer
Hope this helps.....
Have a nice day!!!!
Which cells contain chloroplasts?
A:cells in plant leaves
B:cells in plant roots and stems
C:cells in animal muscles
D:cells in animal brains
Answer:
cell in plant's leaves
Explanation:
cell in plant's leaves
Answer:
A:cells in plant leaves
Explanation:
Chloroplasts are located in the leaves of plants,which contains chlorophyll.This aids in photosynthesis.
I hope this helps :)
digestive juice that acts only on fats dash
answer: digestive juices act on different kinds of food items and help in the breakdown.
Respective digestive juices act upon their own designated food types and help in the process of metabolism.
Lipase is one digestive juices which acts only on fat.
This digestive juices mostly catalyses the hydrolysis of fats and belongs to the subclass of esterase's
Which of the following represents a mutualistic relationship?
1 point
Both organisms benefit
Both organisms do not benefit
One benefits and the other is unchanged
One benefits and the other is harmed
any 5 Reason wetlands destroy?
Answer:
Deforestation
flood
landslide
waste drainge
Unplanned urbanization
Explanation:
these are the main 5 problems that destruct the wetland
The receptor of sound waves in the ear is the
O a. pinna.
O
b. ossides.
O c. organ of Corti.
O d. tympanic membrane.
Before you make a hypothesis—your best guess at a solution—what must you do?
Group of answer choices
Run an experiment
Make observations
Form a theory
Draw conclusions
Answer:
make observations .
Explanation:
Collect as many observations about a topic or problem as you can.
Evaluate these observations and look for possible causes of the problem.
Create a list of possible explanations that you might want to explore.
the color which we see when we close our eyes are called?
Explanation:
The colour which we see when we close our eyes is called Eigengrau which is different from black. It happens due to a phosphene that allows us to block the natural light and get into a dark colour called Eigengrau
MARK AS BRAINLIST IF IT IS USEFUL
Answer:
Black
Explanation:
is this correct?
The Punnett square illustrates a cross for color of the flower.
Based on the phenotypes and genotypes of these offspring. It is clear that purple flower color allele is
and the parents are
dominant
polygenetic
recessive
ntum. All rights reserved.
hp
Answer:
All right reserved
Human skin color is a good example of polygenic (multiple gene) inheritance. Assume that three "dominant" capital letter genes (A, B and C) control dark pigmentation because more melanin is produced. The "recessive"alleles of these three genes (a, b & c) control light pigmentation because lower amounts of melanin are produced.
hope it will help
Here, from the cross of the purple and white flower, all offspring are purple, which indicates that the purple color is dominant in nature and is present in Option A.
What is Punnett Square?The Punnett square is a tool used to predict the probability of offspring inheriting specific alleles from their parents. If all of the offspring exhibit the same phenotype (such as purple flower color), it is likely that the parents both carried at least one dominant allele for that trait. This would mean that the purple flower color allele is dominant. Here, the parents are both purple and white, so all the offspring are dominant in nature.
Hence, from the cross of the purple and white flower, all offspring are purple, which indicates that the purple color is dominant in nature and is present in Option A.
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complete question is below
The Punnett square illustrates a cross for color of the flower (purple- parent, white -parent). Based on the phenotypes and genotypes of these offspring (all purple), it is clear that purple flower color allele is
A.) Dominate
B.)polygenetic
C.) recessive
