Answer:
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Control of rickettsial infections requires _____.
regular bathing
antibiotics
insect control
quarantine
Answer:
insect control
Explanation:
The control of rickettsial infections requires the control of insects.
Rickettsial infections are caused by obligately intracellular Gram-negative bacteria that can only live inside a host organism. The host organisms are usually insects such as ticks, fleas, lice, etc. and a bite from any of the insects hosting the bacteria represents the only through which the infections are transmitted.
Hence, controlling the insects that serve as hosts for the bacteria will go a long way in controlling rickettsial infections.
Answer: insect control
Explanation:
Which of the following involves only abiotic factors?
A. a large rock being weathered by wind and rain
B. an otter using a stone to break open a sea urchin
C. a spider building a web in the corner of a building
D. a pine tree absorbing light from the Sun
A. This is because neither a rock, wind, or rain is a living organism.
Answer:
A. a large rock being weathered by wind and rain.
(e)
The graph shows the number of confirmed cases of salmonella food
poisoning in the UK during one year.
1200
1000
Number of
confirmed
800
cases of
salmonella
food
600
poisoning
400
200
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Month
Suggest one reason for the high number of cases of salmonella food
poisoning in the summer.
Answer: People are outside and don’t wash their hands as often
Explanation:
4. How does the microscope contribute to your viewing of the Daphnia?
A) It decreases the viewing size of the sample
B) It does not change the viewing size of the sample
C) It increases the viewing size of the sample
Answer:
it increases the viewing size.
Explanation:
Function of microscope is used to enlarge organisms for better look
HELP ME FAST pleaseeee thanks
Answer:
you cant read it
Explanation:
what is bioaccumulation .
Answer:
the build up of chemicals in fish.
Explanation:
Answer:
Bioaccumulation is the gradual accumulation of substances, such as pesticides or other chemicals, in an organism. Bioaccumulation occurs when an organism absorbs a substance at a rate faster than that at which the substance is lost or eliminated by catabolism and excretion
Explanation: i hope this helps
During fermentation, the conversion of pyruvate into lactic acid requires
Answer:
The correct answer is - reduction by accepting an electron from NADH.
Explanation:
During fermentation, the conversion of the pyruvate into lactic acid takes place which is a part of the anaerobic process. This process required a reducing agent to accept the electron by pyruvate and convert it to lactic acid.
Pyruvate + NADH → Lactic acid + NAD+
NADH oxidized again for the glycolysis process in anaerobic conditions.
Is a rock that changes from brown to red chemical or physical weathering
Answer:
chemical
Explanation:
Answer:
That would be an example of physical weathering.
Explanation:
Hope this helps you out!
If the producers in a food chain contains 250 kcal of energy, how
much energy will be present in the primary consumers? *
compare and contrast the rock cycle and the carbon cycle
Answer:
The rock cycle and water cycle overlap with erosion, transporting, and deposition.carbon atoms are used repeatedly on Earth and cycled between the atmosphere, hydrosphere, biosphere, and lithosphere through processes
Explanation:
The rock cycle and the carbon cycle are two different types of natural cycles that occur on earth. The difference include components, processes, time scale, human impact, and environmental implications.
What is the difference between rock cycle and carbon cycle?The rock cycle is a continuous process that occurs over millions of years, during which rocks are transformed from one type to another. There are three major types of rocks: igneous, sedimentary, and metamorphic. Each type of rock is formed through a different process.
The carbon cycle is the process by which carbon is cycled between the atmosphere, oceans, and living organisms. Carbon is essential for life, and is found in all living organisms. The carbon cycle is driven by photosynthesis, respiration, and decomposition.
During photosynthesis, plants absorb carbon dioxide from the atmosphere and use it to build organic molecules. These organic molecules are then consumed by other organisms, and carbon is transferred up the food chain.
When organisms die, their bodies are decomposed by bacteria and fungi, which release carbon dioxide back into the atmosphere.
In addition, carbon is stored in fossil fuels such as coal, oil, and natural gas, which are formed from the remains of ancient plants and animals. When these fuels are burned, carbon is released into the atmosphere, contributing to global warming.
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How does sulfur in the air get moved to the soil.
Answer:
Sulfur can also fall directly from the atmosphere in a process called fallout. Also, the weathering of sulfur-containing rocks releases sulfur into the soil. These rocks originate from ocean sediments that are moved to land by the geologic uplifting of ocean sediments.
Mitosis results in which of the following?
A. Two cells with different genes.
B. Two cells with identical genes.
C. Four cells with different genes.
D. Four cells with identical genes
Answer:
The correct answer is B.
Explanation:
Mitosis usually results in two identical daughter cells, whereas meiosis results in four sex cells.
explain how can environmental conditions and individual choices can influence the expression of an organism's inherited traits
Answer:
"Environmental conditions and individual choices can influence the expression of an organism's inherited traits." It means that if you go out in the sun and lie down, then your skin would get darker
Explanation:
What is urea?
A: A structure in the kidney
B: The tube that connects the kidney to the bladder
C: The tube through which waste leaves the body
D: The waste removed by the kidney
Please help
Answer:
Urea, also known as carbamide, is an organic compound with chemical formula CO(NH₂)₂. This amide has two –NH₂ groups joined by a carbonyl functional group. Urea serves an important role in the metabolism of nitrogen-containing compounds by animals and is the main nitrogen-containing substance in the urine of mammals.A 100x lens is also known as what?
Answer:Most compound microscopes come with interchangeable lenses known as objective lenses. Objective lenses come in various magnification powers, with the most common being 4x, 10x, 40x, and 100x, also known as scanning, low power, high power, and (typically) oil immersion objectives, respectively.
Explanation:Hope this helped u also may i plz have brainlist only if u wanna give me brainlist though! Have an great day kind sir or ma'am.
If an mRNA strand has the following sequence: AAA GUU CCA, what
would the corresponding DNA sequence be?
Answer:
AAA GUU CCA -> UUU CAA GGU
(i think its that)
Answer:
UUU CAA GGU
Explanation:
I don't wanna explain get a life
A double helix contains 41% thymine. What percent of the double helix will be adenine? What percent of the double helix is guanine? What percent of the double helix is cytosine?
what does the chromatin do in the cell?
Answer: it's Chromatin
because Chromatin is a substance within a chromosome consisting of DNA and protein. The DNA carries the cell's genetic instructions. The major proteins in chromatin are histones, which Chromatin is located in the nucleus of our cells. The primary function of chromatin is to compress the DNA into a compact unit that will be less voluminous and can fit within the nucleus. Chromatin consists of complexes of small proteins known as histones and DNA. hope this helps have a nice day ❤️❤️❤️
Explanation:
Why is the time series useful as a management tool?
A) It estimates the probability of extinction.
B) It estimates the harvested numbers.
C) It monitors a population's age structure.
D) It designates wildlife refuge areas.
Answer:B
Explanation:
(GIVING BRAINLIEST!!)
Which statement below is true?
A) When the humidity is low, water droplets form on cold surfaces.
B) When wind speed is low, a windsock stays up in the wind and appears full.
C) When you go higher in the atmosphere, the air pressure gets lower.
D) When the air temperature is high, the air feels cold against your skin.
Answer:
I ACTULLY THINK ITS BETWEEN
C AND D
Answer: D
Explanation:
what is a non example of a community?
what is the function of gland in stomach?
Answer:
Digestive glands play a role in producing digestive enzymes. Enzymes produced by the digestive gland are needed to assist the digestion of the food, making it easier to absorb the body.
ASAP!! In the past, plants and fungi were classified together into a single kingdom. What new scientific knowledge led to their current classification into separate kingdoms?
A. It was discovered that plants do not function as decomposers in ecosystems.
B. It was discovered that fungi lack body structures for locomotion.
C. It was discovered that plants could be unicellular.
D. It was discovered that fungi are heterotrophic.
Answer:
D
Explanation:
fungi are heterotropic therefore they cannot produce their own food. plants can since they are autotrophic
The new scientific knowledge led to their current classification into separate kingdoms as It was discovered that fungi are heterotrophic. Thus, option D is correct.
What are fungi?Fungi and plants are currently classified into two distinct kingdoms. However, due to some of their common observed features, they were once classified together as one kingdom. Fungi are a group of heterotrophic organisms that possess cell well while Plants are group of autotrophic organisms that also possess cell wall.
Previously, the observable similar features were the basis of classification of organisms. It was observed that fungi and plants were nonmotile i.e. cannot locomote, and possessed a fixed body structure that grew out of the soil (fungi mushroom).
Therefore, The new scientific knowledge led to their current classification into separate kingdoms as It was discovered that fungi are heterotrophic. Thus, option D is correct.
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Write about examples of how science has impacted your life.
Answer:
Science has made it much easier to understand the world around us, Work, improve technology, and planning ahead.
Explanation:
Scientific knowledge can improve the quality of life at many different levels—from the routine workings of our everyday lives to global issues. Science informs public policy and personal decisions on energy, conservation, agriculture, health, transportation, communication, defense, economics, leisure, and exploration. When scientific discoveries are combined with technological developments, they have resulted in the machines which are making our lives easy to manage. From household appliances to cars and planes, all are the result of science. Science has made it possible for farmers to save their crops from pests and other problems.
Which of the following cells is responsible for producing antibodies when antigens enter the body?
B lymphocytes or B-cells are responsible for producing antibodies when antigens enter the body.
What is Antibody?An antibody may be defined as a protein produced by plasma cells in response to a specific antigen.
The major function of an antibody is to eliminate disease-causing organisms which are known as pathogens and barricade them from contaminating human cells.
Plasma cells of the body produce B cells and memory. B cells play an essential role in producing antibodies while memory cells initiate the process of secondary infection.
The complete question is as follows:
B-cellsT-cellsDendritic cellsNatural Killer cells.Therefore, B lymphocytes or B-cells are responsible for producing antibodies when antigens enter the body. Hence, the correct option is A.
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The process by which organisms obtain energy from inorganic compounds instead of from light is ______
Answer:
Chemo-synthesis
Explanation:
Chemo-synthesis occurs in bacteria and other organisms and involves the use of energy released by inorganic chemical reactions to produce food in the absence of sunlight.
What is the adaptive value of having the organ of gas exchange (the alveolus) inside the body?
For gaseous exchange and energy distribution
Explanation:
they give the lungs a really big surface area.
they have moist, thin walls (just one cell thick)
they have a lot of tiny blood vessels called capillaries
*
contains the DNA and controls all of the cell's activities
Please help me !
Answer:
Nucleus
Explanation:
Nucleus contains the DNA and controls all of the cell's activities
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1. What are the symptoms of oak and tanoak trees
infected by P. ramorum?
Answer:
P. ramorum infects trunks, branches, twigs, leaves, and leaf petioles (the slender stems that support leaves). Experiments on tanoak trees revealed they could be infected without showing cankers or bleeding symptoms, making diagnosis difficult. When visible, trunk cankers are similar to those of the red oak group.Explanation:
Explain the different types of chromosomal mutations?
Answer:
There are four different types of chromosomal mutations: Deletions, Translocations, Duplications and Inversions (pictured below). Note that any chromosome mutation resulting in a significant loss of genetic material (Deletion) is most likely to be lethal.
deletion is where a section of a chromosome is removed.
translocation is where a section of a chromosome is added to another chromosome that is not its homologous partner.
inversion is where a section of a chromosome is reversed.
duplication occurs when a section of a chromosome is added from its homologous partner.
Chromosome mutations are often lethal as the chromosome structure is altered.