This part is used to bring the specimen into sharp focus. This part causes a very small up and down motion when used.
Answers
Answer:
Fine focus.
Explanation:
If you're referencing a microscope, then it would be fine focus. Coarse focus is a basic focus used to properly see a specimen, while fine focus enhance clarity and precision. To use both, you have to gently twist a knob until you can see the specimen at a desired clarity.
Here's a reference image if you need it, it's labeled all the parts of a microscope.
Related Questions
which of these is an effect of an algal bloom?
A. The mercury contained in fish build up in animals that eat the fish
B. An increased growth in microorganisms result in oxygen depletion
C. Materials containing metal are toxic to organisms that live in them
D. Bacteria are introduced to break down hydrocarbons in an oil spill
Answers
the answer is B. an increased growth in microorganisms results in oxygen depletion
18. Cooler weather and fewer hours of daylight signal the approach of fall. 4 points
Which feature of Earth is MOST responsible for these changes?
the tilt of Earth's axis
O the strength of Earth's gravity
the distance of Earth from the Sun
the direction in which Earth rotates
Answers
Answer:A
Explanation:
The tilt of the earth axis makes parts of earth closer to the sun than other without the entirety of earth being any closer, which is why seasons are different on different parts of the earth
14. When we are too cold, these trap a layer of air for insulation. *
Hair
Mucus
Sweat glands
Capillaries
Answers
Which statement explains Mendel's law of segregation?
A. Two alleles for a trait separate during meiosis
B. Two alleles that were segregated come together during meiosis
C. Alleles if the same trait segregate only during mitosis
D. Alleles of a trait can never be separated from each other
Answers
Answer:
A. Two alleles for a trait separate during meiosis
Explanation:
I just took the Biology final and I got 100%!!!
Mendel's law of segregation should be explained with option A. Two alleles for a trait separate during meiosis.
The following information should be considered:
As per the law of segregation, only one of the two gene copies should be present in an organism and that can be distributed to each gamete (egg or sperm cell) .After this, it makes, and the allocation of the gene copies should be done on random basis.Learn more: https://brainly.com/question/20492533?referrer=searchResults
The ____ keeps the climate of Great Britain warmer than it would normally be.
A. gulf stream
B. lake effect snow
C. polar jet stream
D. tropical jet stream
Answers
Answer:
a
Explanation:
Answer:
A The Gulf Stream
Explanation:
Moving west to east warming the waters of the Atlantic along with Great Britain and some of Western Europe.
Plsss I need help answer all the questions I need this before 2:00pm
Answers
Answer:
3 is b variable
4 is c the results
5 is b make a model
Answer: number 3 would be variable and number five would be to ask a meteorolgist. idk what number four is
Explanation:
A glucose molecule is the
Answers
Answer:
Glucose is one of the main products of photosynthesis and starts respiration. The natural form (D-glucose) is also referred to as dextrose, especially in the food industry.
Explanation:
How does global warming affect biodiversity?
A)
increasing temperatures mean increased ability to adapt to the changes
B)
increasing temperatures mean increased risk of extinction
C)
increasing temperatures mean increased habitat development
D)
increasing temperatures mean increased sources of food
Answers
In scientific terms, the person lifting the most weight always has the most power.
True or False
Answers
Answer:true
Explanation:
Answer:
Answer:true!!!!!!!!!!!!!!
Explanation:!!!!!!!!!!!!!
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Explanation:
Which of the following choices contains two ways in which carbon dioxide
enters the atmosphere?"
O A erosion and transpiration
O B decomposition and respiration
C volcanic activity and photosynthesis
Dhuman activity and formation of fossil fuels
Answers
Decomposition and respiration choices contains two ways in which carbon dioxide enters the atmosphere.
What is Decomposition?
Decomposition, often known as rot, is the breakdown of dead organic matter into more basic organic or inorganic components such carbon dioxide, water, simple sugars, and mineral salts.
The procedure, which is a component of the nutrient cycle, is crucial for recycling the limited amount of matter that takes up real estate in the biosphere.
Creatures like worms also contribute to the breakdown of the organic compounds. Decomposers or detritivores are organisms that carry out this process.
Therefore, Decomposition and respiration choices contains two ways in which carbon dioxide enters the atmosphere.
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Can someone help me with a question
Answers
How do mutations cause variation?
Answers
Answer:
Mutations can create entirely new alleles in a population which changes the allele frequencies of a gene pool.
please help me!!
A student drew this model to show the flow of convection currents
on Earth.
Part A
Is the model accurate? Explain your answer.
Answers
Answer:
Yes the model is correct
Explanation:
Transfer of heat energy takes place usually any of these three processes namely; Conduction, Convection and Radiation. In conduction, transfer of heat energy takes place by microscopic collisions of particles within a body. In radiation, heat, light and energy through any source is sent out from something and moves through space without a material medium of propagation. In Convection, heat transfer happens because of the movement of the bulk of molecules within fluids.
We can define convection currents as a natural process of heat transfer involving the movement of energy and heat from one place to another.
The equator is the part on Earth that is nearest to the sun hence it receives much heat. As a result of this, the air near the equator rises upwards as it becomes less dense and later spreads out and again descends towards the equator. This process is responsible for the continual circulation of air which is called wind. It is due to the process of atmospheric convection currents that the clouds are kept aloft.
From the foregoing, the model shown in the image has been validated as a correct model of convection current in nature.
Answer:The model accurately shows convection. However, these large convection currents would occur only if Earth did not rotate. Because Earth rotates, smaller convection cells form.
Explanation:
Plato answer (it's the exact answer if you can reword it.
Which statement is true of Y chromosomes?
A. Women have two of them.
B. Only women have them.
C. All babies have them.
D. Only men have them.
Answers
Answer:
D
Explanation:
Only men have them. Women have two X chromosomes, (XX) and men have XY chromosomes.
Answer:
D
Explanation:
What is the function of junk DNA in cells?
Select all that apply.
a) protecting the ends of chromosomes
b) turning genes on and off
c) holding the nucleus together
d) coding for proteins
Answers
Answer:d
Explanation:
1 point
Until about 200 years ago, most scientists accepted the theory of
spontaneous generation. This theory states that organisms can arise from
non-living matter. Now scientists accept the cell theory to explain the
origin and growth of Few organisms. Which of these statements is a key
idea of cell theory that disproves the theory of spontaneous generation? *
Answers
Answer:
For many centuries many people believed in the concept of spontaneous generation, the creation of life from organic matter. Francesco Redi disproved spontaneous generation for large organisms by showing that maggots arose from meat only when flies laid eggs in the meat.
Explanation:
hi
16.Which one of the following does not affect water loss from a plant?
a.Temperature
b.Wind
c.Humidity
d.Photosynthesis
Answers
Answer:
b. Wind.
Explanation:
The wind only blows the plant this way and that. it won't exactly effect any major contributions from its original function.
I hope my answer helps you! :)
Which statements describe a host organism? Check all that apply.
A host shares nutrients with a parasite.
A host loses nutrients to a parasite.
A host obtains nutrients from a parasite.
A host is dead when nutrients are taken.
A host is alive when nutrients are taken.
Answers
Answer:
A host loses nutrients to a parasite.
A host is alive when nutrients are taken.
Explanation:
Answer:
A host is alive when nutrients are taken
A host lose nutrients to a parasite
Why is sustainable development concerned with the needs of future generations?
Sustainable development is concerned with the needs of future generations because Earth's natural resources are
_________.
Answers
Answer:
Sustainable development is defined as the principle to meet present need without affecting future generation needs.
Sustainable development is much concerned with the future needs because humans are utilizings the natural resources of the Earth in order to fulfil present needs. But the natural resources of the Earth are non-renewable and will take hundreds or thousands of year to form again, so it is possible that our future generation will unable to consume those natural resources.
Even natural resources cannot be replaced by other resources, example: carbon-based fossil fuel.
Hence, people consuming natural resources in large quantity which can affect future generation needs, as natural resources are non-renewable sources of energy.
Answer:
Its either Non-renewable or Limited
Explanation:
Minerals that do not have weak bonds along specific planes will
A. streak
B. luster
C. cleave
D. fracture
Answers
Sorry if I’m wrong
cleavage is when a mineral breaks along a plane
how does the skeletal system work
Answers
Answer: Muscles connect to your skeleton and they contract and move the skeleton along. Your skeletal system is made up of cartilage and calcified bone that work together. They help the process of movement happen in a smoother manner. The calcified bones of your skeleton also work with the circulatory system
Explanation: Mark me as brainliest
48.Which is a significant environmental cost of burning fossil fuels that is not incurred with the use of the other energy resources?
A. global climate change, which is caused by the transfer of carbon to the atmosphere
B. a disruption of the water cycle, which is caused by the heating of water at power plants
C. radioactive pollutants, which may be accidentally released at power plants
D. localized warming, which is caused by the release of heat into the atmosphere
Answers
Answer:
A
Explanation:
big brain
;3
Explain why recycling cans, bottles, and paper is a way to promote sustainability.
Answers
Which statement is scientifically reasonable?
In the early 2000s, scientists and farmers began to notice
a sharp decline in the population of honeybees around
the world. Many explanations were proposed for the
cause of the decline. Three possible explanations were
pesticides on crops, parasites in beehives, and cell phone
tower signals.
O One study showed that pesticides were affecting
bee populations near one farm. Therefore,
pesticides on crops is the only reasonable
explanation
A post online claims, "Many people thought that
cell phone signals were confusing the bees' sense
of navigation." Therefore, cell phone signals is the
best explanation
O Multiple scientific experiments need to be
conducted to determine whether these possible
causes are affecting bee populations.
Answers
Answer: Multiple scientific experiments need to be conducted to determine whether these possible causes are affecting bee populations.
Explanation:
Answer:
c
Explanation:
Some people think hydropower should be used supply all of the electricity for the United States. Which of the following statements describes a flaw in this plan?
A. Wind power causes too much pollution
B. Wind cannot used to generate electricity
C. Wind power can be used only in certain areas
D. Wind power contributes to climate change
Answers
Wind power can be used only in certain areas.
-or-
(depending on the way it's written)
These power sources can only be used in some areas.
Some people think hydropower should be used to supply all of the electricity for the United States, and the flaw is that wind power can be used only in certain areas; that is option C, as in most urban areas it is not effective as there is not much space and wind speed.
What is hydropower?Hydropower is a renewable energy source and has many benefits, including the ability to generate large amounts of electricity without emitting greenhouse gases. However, it also has limitations. Hydropower is dependent on the availability of water resources, which can vary depending on seasonal changes, weather patterns, and other factors. In addition, hydropower can have negative environmental impacts, such as disrupting natural river ecosystems and affecting fish populations.
Hence, some people think hydropower should be used to supply all of the electricity for the United States, and the flaw is that wind power can be used only in certain areas; that is option C, as in most urban areas it is not effective as there is not much space and wind speed.
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Look at the food web.
What does the deer get energy from?
tree and squirrel
insects and grasses
tree and insect
tree and grasses
Answers
Answer: the deer gets energy from grass and the tree
Explanation:
Look for the arrows that point towards the deer and not away
In this food web, deer get energy from trees and grasses.
What do you mean by food web?A food web is a natural connection of food chains and a graphic representation of what-eats-what in an ecological community. Another name for the food web is the consumer resource system.
A food web consists of several food chains. A food chain only follows one path when animals find food. eg: A hawk eats a snake that ate a frog that ate a grasshopper.
A food web consists of the connections of different food chains. In nature, many food chains are interconnected thanks to many producers and consumers. Such a complex network of food chains is called a food web.
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Consider the chromosome.
The parts of a chromosome are labeled. The lines on the chromosome are labeled b.
Which best describes the function of the part labeled b?
carries all the genetic information of the organism
provides the master instructions for the cell
joins sister chromatids
codes for a specific trait
Answers
Answer:
D.
Explanation:
..
The part labelled B is gene which codes for a specific trait. So, the correct option is (D).
What are Genes?Genes are defined as the basic unit of heredity passed from parent to child that are composed of sequences of DNA and arranged one after the other at specific locations on chromosomes in the nucleus of cells.
The main function of genes is to code for a specific trait where every individual on this earth is different from each other. The traits that make individuals alike are the genes they carry.
Traits like eye color, height, ear size, height are controlled by genes where as such characters like fur color, flower size, flower color are also controlled by genes. The characteristics responsible for what a person is like are borne by genes.
Thus, the part labelled B is gene which codes for a specific trait. So, the correct option is (D).
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The body’s nonspecific defenses against invading pathogens include
Answers
Answer:
anatomic barriers, inhibitors, phagocytosis, fever, inflammation, and IFN
Explanation:
Using the example of the Abert’s and Kaibab squirrels, describe what happened to them at each stage of their speciation.
Answers
Answer:
The Alberts and Kaibab squirrels different from their respected paths by
geologic isolation. The two species of squirrels were seperated and then eventually adapted to their respected environments .
Explanation:
Hopr it helps !!!
Discuss, why is rubisco the key enzyme for the production of worlds food
Answers
Answer:
Rubisco is the major enzyme used to catalyse the carbon fixation step during the Calvin cycle in photosynthesis.
During carbon fixation, RUBP undergoes a redox reaction with CO2 to form 3-phosphoglycerate (a 3 carbon compound). 3-phosphoglycerate then undergoes phosphorylation by ATP and reduction by NADPH to form glycerate 3 phosphate molecules (main product), ADP and NADP+ molecules (by product).
Some Glycerate 3 phosphate produced are used to regenerate RUBP for the Calvin cycle to continue while the rest of the Glycerate 3 Phosphate is used to synthesise monosaccharides like glucose.
Without Rubisco, carbon fixation cannot occur and RUBP will not be able to combine with C02 to form a 6 carbon unstable intermediate the breaks down to form 3-phosphoglycerate and eventually undergoing more reactions to form glycerate 3 phosphate which is the basic product of photosynthesis used to synthesise glucose and eventually starch which serves as the world's food.