the objective and ocular lenses are responsible for magnifying the image.
so for 10x objective and 10x ocular
total magnification= 10x10= 100x(this means that the image being viewed will appear to be 100 times its actual size)
a)scanning(small lens),red ring=4x or 5x
b)low power (medium lens), yellow ring = 10x
c) high power (large lens),blue ring = 40x
d)oil immersion (largest lens),white ring = 100-250x
4.immersion oil helps to focus on lighting
5. total magnification=15x40 =600x
6. diaphragm controls the amount of light reaching the specimen.
They control both the focus and quantity of light applied to the specimen.
There were dinosaurs that had feathers.
True
False
Answer:
true
Explanation:
Among the feathered dinosaurs discovered so far are Beipiaosaurus, Caudipteryx, Dilong, Microraptor, Protarcheopteryx, Shuvuuia, Sinornithosaurus, Sinosauropteryx, and Jinfengopteryx.
Which organelle is used in making molecules of glucose in autotrophs?
A. nucleus
B. Golgi body
C. chloroplast
D. mitochondria
Carlos is asked by his teacher to closely observe the pixels on a television screen with a magnifying glass. He is told that each pixel emits one color of light at a time and that the colors emitted by adjacent pixels combine to create an image on the television screen. His teacher asks him to identify which colors the pixels emit. Carlos knows that any shade of paint can be made out of red, blue, and yellow paint. So he decides not to closely observe television and concludes that television pixels must emit red, blue, or yellow light to generate an image.
How did Carlos reach his conclusion?
A. He closely observed the colors of television pixels emitted.
B. He conducted a controlled experiment.
C. He proved that the properties of light are the same as those of paint.
D. He let his prior expectations bias his investigation.
Answer:
d
Explanation:
he let his prior expectations ...
Answer:
D
Explanation:
As Carlos did not closely observe the television, he did not conduct a controlled experiment, but used his knowledge of the past about paint, colour and light to create a bias investigation.
What is the best way to sample sessile organism with quadrats?
a) Cover the entire area with quadrats
b) Place one quadrat in the center of the area
c) Place quadrats in locations with the most interesting organisms
d) Randomly place quadrats in many locations as possible
Answer:d
Explanation: if you’re doing an experiment you Need multiple trials
The best way to sample sessile organism through the use of quadrats is to: d) Randomly place quadrats in many locations as possible.
Sampling can be defined as a statistical process that is typically used for collecting or selecting data (objects, observations, or living organisms) from a larger statistical population by using a specific procedure.
A quadrat can be defined as a rectangular or square plot that is used to randomly mark off (enclose) an area within a habitat, so as to isolate a sample and determine the percentage of species.
Basically, a quadrat is made of wire and it is usually used for:
Sampling sessile organisms (plants).Sampling slow moving animals such as snails, slugs, etc.In conclusion, the best way to sample sessile organism through the use of quadrats is by randomly placing quadrats in many locations as possible within a habitat.
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Which organelles allow plants to support heavy structures such as leaves and
flowers?
Answer:
central vacuole
Explanation:
In many plant cells there is a single large central vacuole filled with liquid, pressure of the central vacuole allows plants to support heavy structures such as leaves and flowers. pro here here :D
depending on their ______, stars can be one of four categories: white dwarf, main sequence, giants, or super giant
Answer:
pretty sure the answer is surface temp or mass
Explanation:
pls heart and mark brainliest much appreciated
A scientist creates a pedigree to map out a family’s inheritance pattern for a genetic disorder. After analyzing the chart, it is determined that the genetic disorder is likely autosomal recessive. Which of the following genotypes would best represent individual B and individual C?
A. Individual B: Hh / Individual C: Hh
B. Individual B: HH / Individual C: HH
C. Individual B: HH / Individual C: hh
D. Individual B: hh / Individual C: hh
Answer:
A
Explanation:
only one is black while the rest is white
B is out because all the children would be the same
C is out because the children would all be the same
D is out because all the children would be the same
At 1,312 feet below sea level, the __________ is the lowest point on the Earth's surface.
A.
Dead Sea
B.
Rub al-Khali
C.
Dasht-e Kavir
D.
Red Sea
Please select the best answer from the choices provided.
A
B
C
D
Answer:
a.
Explanation:
Answer:
A the Dead sea
Explanation:
the dead sea is 1312 feet below the sea level and is the lowest point on Earth.
Which cell structure is likely to be abundant inside pancreas cells?
Answer:
Ribosomes
Explanation:
50 POINTS + BRAINLIEST!
Coal is best used as a
A.) fuel
B.) paint
C.) fertilizer
D.)conductor
Answer:
A.) fuel
Explanation:
Coal is best used as a fuel to generate electric power.
Anthracite is the best quality of coal with least ash content.
Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism?
The number of hydrogen bonds that hold the strands of DNA together.
The number of hydrogen bonds that hold the strands of DNA together.
The number of carbons in the DNA molecule.
The number of carbons in the DNA molecule.
The sequence of nucleotide bases in the DNA molecule.
The sequence of nucleotide bases in the DNA molecule.
The sequence of phosphates along each DNA strand.
The sequence of phosphates along each DNA strand.
Answer: The sequence of nucleotide bases in the DNA
Explanation: The sequence of the nucleotides directly code for each trait. The genetic code is contingent on the sequence of the bases- if the order is changed (you will learn about this in genetic mutation), it would create a different code, which could possibly create a totally different gene depending on which base is changed.
Hope this helps,
Lacia
The sequence of nucleotide bases in DNA molecules is responsible for the direct coding of specific traits in an organism
What is DNA?Every living thing has self-replicating genetic material called DNA. It is a repository for all genomic data. It contains instructions that let organisms to develop, grow, survive, and reproduce. It's a big molecule with a genetic "code" in it. The foundation of human development is this genetic code. However, external factors including diet, lifestyle, and the environment influencing human evolution may have an impact.Nucleotide molecules, which make up DNA, are its constituent parts. The carbon-sugar group, phosphate group, and nitrogen base are the three elements that make up a DNA molecule. The four other nitrogen bases are adenine (A), cytosine (C), guanosine (G), and thymine (T).3 billion base pairs make up the distinctive human DNA, which is what makes it unique. But 99.9% of them are universal to humans. What information must be coded in order to support the growth and development of the organism is determined by the order of these bases. During transcription, when DNA is copied, a substance called as RNA is produced (Ribonucleic Acid). It is this RNA's job to convert genetic information from DNA to protein, which is then read by ribosomes.To learn more about DNA, refer to https://brainly.com/question/16099437
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1. What was the accepted belief in the origin of life in the 19th century?
Answer:
As evolution became widely accepted in the 1870s, caricatures of Charles Darwin with the body of an ape or monkey symbolised evolution.
The_______system is the main transport system of the human body. it is made up of the heart,blood,and blood vessels namely_____________. _______________,And________________.These vessels bring oxygen-rich blood also.Called_____________ to the different tissues in the body and transport_____________from the tissues to the lungs,in a process called circulation
Answer:
The circulatory system is the main transport system of the human body. it is made up of the heart, blood, and blood vessels namely arteries , veins And capillaries .These vessels bring oxygen-rich blood also Called veins to the different tissues in the body and transport blood from the tissues to the lungs ,in a process called circulation
Explanation:
ABOUT CIRCULATORY SYSTEM -: Blood vessels that carry blood away from and into the heart make up the circulatory system. Blood is carried away from the heart by arteries, and blood is carried back to the heart by veins. Oxygen, nutrients, and hormones are carried to cells by the circulatory system and waste materials, such as carbon dioxide, are extracted.
THREE MAIN BLOOD VESSELS -:
ARTERIES -: The arteries (red) bring oxygen and nutrients to your body's tissues, away from your heart. The aorta, the large artery leaving the heart, begins with the arteries. They carry blood rich in oxygen away from the heart to all the tissues of the body. As they carry blood further from the heart, they branch several times, becoming smaller and smaller.VEINS -: The arteries (red) bring oxygen and nutrients to your body's tissues, away from your heart. These are vessels of the blood that carry back oxygen-poor blood to the heart. When they get closer to the heart, the veins get bigger and bigger. The superior vena cava is a large vein which carries blood from the head and arms into the heart, and the inferior vena cava carries blood from the abdomen and legs into the heart. CAPILLARIES -: Capillaries are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow the passage of oxygen, nutrients , carbon dioxide and waste products from and to the tissue cells.BLOOD -: Blood circulates through the entire body through a network of vessels to provide oxygen and nutrients to individual cells and helps to dispose of metabolic waste. The blood around the blood vessels pumps the heart. Blood and circulatory processes circulate oxygen and extract carbon dioxide.
What is the main obstacle to cloning the woolly mammoth.
Answer:
A lack of suitable genetic material.
Explanation:
most of the DNA has been destroyed after being frozen for so long.
1. Name 3 examples of prokaryotes and 3 examples of eukaryotes. Explain how prokaryotes and eukaryotes are similar and different (name at least 2 similarities and 2 differences).
Answer:
Explanation:
Prokaryotes: Bacteria and cyanobacteria
eukaryotes: Animals and plants
Similarity: 1. They both contains ribosomes.
2.They both have cytoplasm and DNA
dissimilarity: 1. Double membranous organelles are absent in prokaryotes
2. The well defined nucleus absent in prokaryotes.
•What are flood plains, what do they do?
Answer:
Floodplains are dynamic natural systems. ... Floodplains provide a wide range of benefits to the ecosystem and community that include: Flood storage and erosion control–offer a broad area for streams and rivers to spread out and accommodate temporary storage of flood water, reducing flood peaks and erosion potential.
Which organelle is used as temporary storage for water, waste products, food, and other cellular material?
mitochondrion
lysosome
centriole
vacuole
Answer:
d. vacuole
Explanation:
the vacuole stores water, waste, food, etc. and then releases it from the cell.
Organelles are present inside the cells of eukaryotic organisms. The vacuoles of the cells temporarily store water, wastes, food, and other material. Thus, option D is correct.
What is a vacuole?A vacuole is an organelle present in an animal and plant eukaryotic cell. Though they differ in size and number in both cells but have various functions important for the survival of the cell.
The vacuole of plant cells is large than the animal cell and stores the cellular substances, cell waste, and synthesized food particles. In plants, they maintain the water and osmotic balance.
They regulate the storage and transport of cellular materials, maintain turgor pressure, and control the localization of the proteins synthesized by translation.
Therefore, option D. vacuoles stores waste and food.
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A flounder is a flattened fish that lives on the bottom of bodies of water, while
a tuna is a streamlined fish that swims in the open sea is an example of:
1. adapting to its environment
2. maintaining internal conditions, homeostasis
3. Obtaining and using energy
4. growth and development
5. reproduction
Answer:
1 adapting to its environment
A man walks 10 meters in 5 seconds, what is his speed?
Answer:
2m/s
avg. speed=10m5s=2m/s .
Explanation:
18. Lab Summary - Explain how this experiment models a cell membrane. Use the
following terms in your explanation: selectively permeable, hypertonic, diffusion, indicator.
Answer:
Cell membrane is considered as boundary of the cell.
Explanation:
Cell membrane is the boundary of the cell which is selectively permeable that allows the micro-nutrients, water and gases like oxygen and carbondioxide etc through the process of diffusion. When the water goes inside due to diffusion it is the indicator that there is less quantity of water present inside the cell as compared to the external environment, this phenomena is called hypertonic.
What is the male sex cell that results from meiosis?
zygote
sperm
egg
bacteria
Answer: sperm
Explanation:
Which of these would be considered an adaptation of an animal, that wolves'
prey upon, that lives in the snowy north pole?
1. Webbed feet
2. Long shear like beak
3. A thin coat of fur
4. Large, flat feet
Answer:
Explanation:
4
2.If the formula of an element is Y5, its atomicity is
a. 3 b. 2 c. 1 d. 5
answer is 3
answer is 3
Lower air density means
oxygen molecules in each breath
Answer:
As air pressure decreases oxygen continues to account for about 21% of the gasses in the air as it does at sea level. But, there is less oxygen because there is less of all of the air's gasses
A man and a woman both have blood type AB. What is the probability their child will be blood type B?
Answer:
25%
Explanation:
you can solve this with a punnett square as well :)
I’ll give you a thanks, please help!
Answer:
carbon dioxide
Explanation:
this is formed during photosynthesis
Answer:
Carbon dioxide
What was the independent variable in this experiment? Help
Answer:
The type of wire
Explanation:
The type of wire is the change in this experiment
Answer: type of wire
Explanation:
What is the source of the carbon dioxide that is used in photosynthesis?
sunlight
the soil
the atmosphere
the plant
Answer:
THE ATMOSPHERE
Explanation:
The atmosphere is the source of the carbon dioxide that is used in photosynthesis. Hence option c is correct.
What is photosynthesis?Photosynthesis is defined as the process through which green plants use energy from sunlight to transform carbon dioxide and water into food. It is a process that only happens in plants that contain the chlorophyll, a green pigment used in food preparation. Photosynthesis takes place in the chloroplast, a specialized intracellular organelle found in plants and algae, which emerged considerably later.
During photosynthesis, plants take up carbon dioxide (CO2) and water (H2O) from the soil and atmosphere. Plants take in carbon dioxide from the atmosphere as they photosynthesize. Plants can absorb the gas carbon dioxide from the air by way of microscopic holes in their leaves. Once they have carbon dioxide and water, they can use solar energy to create food.
Thus, the atmosphere is the source of the carbon dioxide that is used in photosynthesis. Hence option c is correct.
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Which person participated mostly in the primary level of an economy?
A. A collage professor
B. A coal miner
C. A car mechanic
D. A car factory worker
Please help a girl out♀️
Answer:I know I’m to late, but the answer is B coal miner.
Explanation: I just took the test on apex
What example implies that a cell membrane receives and sends messages?