Answer:
How do bacteria become resistant to antibiotics? Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm.
How might the digestive system and the immune system interact to help protect the body?
Please i need a correct and accurate answer. ++ giving brainliest
Answer:
Explanation:
The immune system is there to develop a strong answer for infections and diseases that can occur in the body. The system is comprised also of gastrointestinal immune cells. These cells secrete lymphocytes that are there to attack whatever is attacking our body. The gut immune cells and the microflora located inside it are responsible for preventing the growth of other microbes that are bad for us in the gut and to fight ingested pathogens that we can get on our food.
There are 150 Saguaro cactus plants per square kilometer in a 10-square-kilometer area of Arizona desert. To which population characteristic does this information refer
Answer: Population Density.
Explanation:
Population density, this is known as the number of people per unit of area, it is usually denoted with per square kilometre or square mile, population density can be calculated for a county, city, or plants as in this question.
Which tells us the population density of saguaro cactus plant to be 150 per square kilometres.
Plz help I don’t know the answer to this!!
if I ride my bike to school instead of walking, then I will get there faster what is the dependent variable
Answer:
you will get there faster.
Explanation:
this is all related to your rate of speed the faster you pedal the faster you reach school if you walk faster than ride it'll be the other way around.
does photosynthesis occur in mushroom give a reason to support your answer
Answer:
No
Explanation:
Although mushrooms and fungi have a cell wall like plant cells, fungi are unable to make their own food and must feed on decaying matter to gain the energy needed for survival.
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These types of trees have their leaves modified into needles to help
reduce water loss?
Answer:
Coniferous trees
Explanation:
They are mainly found in cold regions
Structure and Properties of Matter:Question 9
In which two states of matter can a substance take the shape of its
container?
Select one:
O
Liquid and gas
O
Gas and crystal
O
Sod and gas
O
Solid and liquid
Answer:
Liquid and gas
Explanation:
Liquid and gases can take the shape of their contains.
Liquids have not fixed shape and they readily flow.
Gases are random and they occupy the contains they fill .
Volume is the amount of space occupied by a substance. Gases can take up any amount of space in a container. Liquids can readily flow and take up spaces too. Solids are fixed and have a definite volume.Which element is not found on most main sequence stars?
Answer:
Nitrogen is the right answer.
Can someone pls help me with this (8th grade science)
Answer:
A
Explanation:
As he kicks the ball the speed increases, where he kicks the ball also is a factor, since he kicks it in the same direction that is why it is choice A.
what do you think about the human and his structure how it's made all the human structure
Answer:
its a thousand of generation evolution i think as of darwins law of evolution
Answer:
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1. Explain the change in erythrocyte count in the case of anemia
2. Where are red blood cells produced?
3. What type of cells help blood to clot?
4. What makes the human circulatory system efficiently carry oxygen to the tissues?
5. Describe the role of blood plasma.
6. Explain the role of lymph in our body
Some scientists predict that if global warming continues over the next few centuries, melting of the polar caps will raise the level of the oceans, causing some peninsulas to become islands. How might this change eventually affect the species that live on these peninsulas
Smalles to greatest
Answer: cells, tissues, organs, organ systems, organism
Explanation:
Stand and let your hands hang next to your sides for a few minutes. Then, look at the backs of your hands. Do you see any bumps on the surface on top of your veins? What might those be, and what are their function?
When you stand and let your hands hang next to your sides for a few minutes, the bumps you see on your veins are the valves that help move blood to the larger veins.
What we know about vein valves.There are valves located throughout the veins in our bodies. Most of these are located in points where smaller venules fuse with the larger veins.
Their function is to prevent blood from flowing back into the smaller veins, thus helping with the normal blood flow of the body.
Given that the veins in our bodies are littered with small valves to help the blood return to the heart correctly, we can confirm that these are the small bumps that we can see when letting our hands down for a few mins, as they fill with the blood they try not to let flow back into the smaller veins.
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In dogs, orange fur in dominant over brown fur
Answer: If this is a true or false question its FALSE because orange fur is the recessive gene and brown fur is dominant
Explanation:
I don't know if this is a question but thats cool! If there is a question I can try and answer it!
Which of the following shows a correct base pairing in DNA?
A and G
T and G
C and A
Gand C
Answer: G and C
Explanation: DNA carries the hereditary information for organisms. W ithout DNA, our species would be unable to pass traits from generation to generation. DNA controls all aspects of an organism. It tells spiders how to spin webs, birds to lay eggs, and what color to make your eyes. The genetic information in DNA is stored as special chemical sequences, called chemical bases. The chemicals bases are adenine (A), guanine (G), cytosine (C), and thymine (T). Each base connects with another to form base pairs. Adenine always pairs up with thymine. Cytosine always pairs up with guanine
In the Hershey-chase experiment, what happened to the bacteria that had been infected by viruses that had radioactive DNA, and to the bacteria that had been infected with viruses that had been marked with radioactive proteins?
Answer:
The bacteria infected with viruses that had radioactive DNA had become radioactive. The bacteria that had been infected with viruses marked with radioactive proteins were not radioactive.
Explanation:
The rest of the answers:
1.2
2.3
3.2
4.1
5.b
What effect does increased carbon dioxide
have on global temperatures? (two complete
sentences minimum)
Answer:
Carbon dioxide increases temperatures, extending the growing season and increasing humidity. Both factors have led to some additional plant growth. However, warmer temperatures also stress plants. With a longer, warmer growing season, plants need more water to survive.
Explanation:
Today, the common type of banana we eat is a Cavendish banana. They arose from chance mutants that were produced sexually from wild banana plants. The Cavendish banana is infertile and can only be produced by cloning root shoots. Large commercial growers worldwide now plant only the mutant type. Some information about both types of banana is recorded in the table.
Growers on large banana plantations that supply food commercially have chosen to limit their plantings exclusively to Cavendish banana plants. Why are scientists warning that exclusively growing this mutant type by asexual reproduction presents a serious disadvantage
1.The loss of an adequate Cavendish banana seed supply could result in extinction of both varieties of plants.
2. The changes in characteristics from a parent plant to a clone will produce inconsistent plants that are less healthy.
3.The lack of genetic variability among clones puts the whole species at increased risk of extinction through a catastrophic disease or pest.
4.The increasing number of homologous sets of chromosomes crossing over with each successive generation of clones will eventually result in widespread death of banana plants.
Answer:
The lack of genetic variability among clones puts the whole species at increased risk of extinction through a catastrophic disease or pest.
Explanation:
Every living organism, be it a plant or an animal, has its own way of reproduction and its own mechanisms of how to cope with dangers. In recent times though, we see that there are more and more organisms, mostly plants, that are not fertile, thus they can not reproduce on their own but need human assistance. This is the case with one of the most popular fruits in the world, the banana.
Virtually, all bananas that are produced commercially are not fertile, but they can only be reproduced by cloning them. While this may not seem like something that terrible, it actually is. Every single plant that is used for commercial production is exactly the same, thus the genetic variation is lacking totally. By having zero genetic variation, if only one plant gets diseased by a disease that spreads out easily and is fatal, it will affect every single banana plant, and by having no genetic variation, the effect will be the exact same at all of them. This kind of scenario can very easily lead to the rapid extinction of these bananas and the loss of one of the most consumed fruits in the world.
When we breathe, we inhale oxygen and release carbon dioxide. What cell process does our body use the oxygen for?
A. Photosynthesis
B. Cellular respiration
C. Osmosis
Answer:
Cellular respiration
Explanation:
This is because if you see Photosynthesis is used for plants to get a food source from the Sun. Osmosis is the movement of chemicals from a less converted membrane to a more. I think i said that wrong but. I am sure it is cellular respiration which is the despirsion of waste products. So yeah Answer is Cellular respiration
What is the process depicted in this figure and why is it important?
Answer:
The correct answer is - antigenic shift due to mutation.
Explanation:
In this image, there is a representation of the antigenic shift or change takes place to evolve to a new strain of influenza virus from the original virus that has a different antigen on the surface of the virus than the new strain. In this image it is shown that the surface H antigens went through a shift to form a new strain while N antigen remain the same.
This is important to adapt and evolve according the internal environment of the host show this type of mutation requires if moving from one host to another (human to pigs).
Which statement correctly describes the reason for the high specific heat of water?
A.) Water has unusually strong hydrogen bonding. These bonds require extra energy to break. Therefore, water has a high specific heat.
B.) The oxygen and hydrogen atoms in water molecules are bonded together with strong covalent bonds. The bonds require extra energy to break. Therefore, water has a high specific heat.
C.) Water is made of ions. The attraction between ions requires extra energy to break. Therefore, water has a high specific heat.
D.) The oxygen and hydrogen atoms in water molecules are bonded together with strong ionic bonds. The bonds require extra energy to break. Therefore, water has a high specific heat.
The answer is A.) Water has unusually strong hydrogen bonding. These bonds require extra energy to break. Therefore, water has a high specific heat.
Which process is similar to binary fission?
Answer: mitosis
Explanation: Binary fission is similar to mitosis in the way that the process ultimately leads to the production of two identical daughter cells. However, they differ in many aspects. While binary fission is for reproductive purposes mitosis is primarily for growth in multicellular organisms.
Match the columns and chose the correct option. Column A Column B 1.The male reproductive part of a flower i) sepal 2. The female reproductive part of a flower ii) stamen 3. The part of the flower which protects it in bud stage iii) ovules 4. Part of a flower which develops into a seed iv) carpel
Explanation:
1.Stamen
2.carpel
3.sepal
4.ovules
Pls state lamarck's theory
Answer:
Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring
Fragmentation occurs when a large area of ecosystem is divided into smaller, isolated areas due to deforestation. After fragmentation, changes to the ecosystem can occur. Which is most likely an effect of fragmentation on an ecosystem?
a. Animal species in the fragmented area utilize new food sources in the deforested area.
b. Plant species from the deforested area alter conditions at the edge of the fragmented area.
c. The nutrient cycle is replenished by new species colonizing the deforested area.
d. Most native species disappear from both deforested and fragmented areas.
Answer:B
Explanation:
Evidence that an organisms growth is influenced by the organisms environment
Answer:
local environmental conditions could include availability of food, light, space, and water
Explanation:
Examples of genetic factors could include large breed cattle and species of grass affecting growth of organisms.
4.
______ describes the average conditions of our atmosphere over a long period
of time.
Answer:
The answer is Climate.
What is the source of oxygen as a reactant in cellular respiration?
Answer:
The Reactants
What goes into the cell? Oxygen and glucose are both reactants of cellular respiration. Oxygen enters the body when an organism breathes. Glucose enters the body when an organism eats.
Explanation:
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Cellular respiration has been the chemical process that uses glucose to produce energy. Oxygen is the reactant of the process that comes from the air (breathing) produced by photosynthesis.
What is cellular respiration?Cellular respiration has been defined as the process vital for living organisms that use oxygen and sugar molecules to produce energy to drive the activities and functions of the body. The reactant of the process includes glucose and oxygen gas.
Oxygen and sugar are known to be the product of the photosynthetic reaction that uses carbon dioxide and water. The oxygen gas is present in the atmosphere and enters the body through breathing.
Therefore, oxygen acts as a reactant in cellular respiration that comes from the breathing process.
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how do skin cells replace itself after an injury?
a) skin cells go through the process of budding to make new identical cells.
b) skin cells go through the procces of mitosis to make new identical cells.
c) skin cells go through the process og photosynthesis to make new identical cells.
d) skin cells go through the process of cellular respiration to make new identical cells.
Answer:
d
Explanation:
as a result of accumulation of waste products in the body , these substances are removed from the body via the skin hence they undergo cellular respiration
Answer:
b) skin cells go through the process of mitosis to make new identical cells.
Explanation:
The skin is the largest organ in the human body; it forms a protective barrier that keeps out external pathogens, and is integral to waste removal. When the organ is injured, damaged cells initiate an immune response, while healthy cells nearby begin to replicate.
This type of cell replication involves somatic cells and results in the diploid number of chromosomes called mitosis. Skin cells are somatic- they contain all 24 pairs of human chromosomes. During replication, the chromosomes are unwound, and copied- then, the newly copied chromosomes separate into two identical daughter cells with the same chromosome number.