why does the central part of a red blood cell appear paler than the outer part when viewed under a light microscope
Answers
Answer: The central pale area of each red blood cell is due to the concavity of the disc.
Explanation:
The absence of a nucleus and light effect makes the central part of a red blood cell appear paler
The red blood cells ( RBC )does not have a nuclei like every other cells contained in the body. therefore when viewed under a light microscope the outside of the red blood cell will appear brighter ( pink ) while the center of the red blood cell will appear pale ( whitish ). also the the light intensity from the light microscope contributes to the pale nature of the central part of the red blood cell.
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Related Questions
The production of offsrpings is a charatericities of life that enables the continuation of a species.
Answers
Answer:
"Reproduction" is a characteristic of life that enables the continuation of a species
Explanation:
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differentiate between larva of culex mosquito and that of anopheles mosquito on the basis of feeding habit
Answers
Answers in the image
Hope it helps!
Explanation:
•larva of culex mosquito is bottom feeder where is Lava of anopheles mosquito is surface feeder
• Culex mosquito respiratory siphon is long whereas a the anopheles mosquito respiratory siphon is short
•Culex mosquito form an angel inside water whereas anopheles mosquito remains of parallel with water surface
iruses, not bacteria, cause cold and flu. However, some people demand antibiotics from their doctors to help control the symptoms of these diseases. Do you think the use of antibiotics in these situations has an effect on antibiotic-resistant bacteria? Explain your reasoning.
Answers
Answer:
i think that if you use antibiotics your body wouldn't get exposed to the bacteria as much as if you got sick, making your body more dependent on the meds because your body hasn't produced the antibody's against the bacteria
Explanation:
Son elementos que se refiere a las personas que conviven o trabajan prestando sus servicios en un espacio turístico,rural o en una cuidad como los q es posible analizar en la imagen
A: Económicos
B:Sociales
C:Culturales
D: Naturales
Answers
Los elementos que se refieren a las personas que conviven o trabajan prestando sus servicios en un espacio turístico, rural o en una cuidad , son los elementos económicos.
Por lo tanto, la respuesta es A) Económicos.Son económicos porque esas personas trabajan en el sector turístico rural o citadino.Eso significa que su trabajo genera un ingreso y produce un pago como retribución a su salario.El sector turístico mueve mucho dinero y es un gran generador de impuestos para el Estado.Por esa razón lo consideramos un elemento económico.Podemos concluir que -a pesar de que se te olvidó incluir la imagen a la que se refiere la pregunta- el turismo es una de las principales actividades económicas de un país
El turismo es una actividad que permite el ingreso de millones de dólares a través de los turistas que visitan una nación.
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HELP!!! TIMED TEST!!! The chart shows four articles read by the students in a science class. Which claim has the greatest support?
A The Journal of Health: smoking can cause adverse effects on the lungs
B The Daily News: Vitamin supplements help increase food absorption.
C and D look untrustworthy.
Answers
That claim really has the greatest support
Answer:
IT IS A I THINK
Explanation:
2. What is the pH of a very acidic solution?
a:5
b:10
c: 1
d:14
Answers
C
Explanation:
Acidic pH ranges from 0-6, lower numbers being more acidic
why is silk moth is called silkworm?
please help me
Answers
Answer:
It is the closest relative of Bombyx mandarina, the wild silk moth. The silkworm is the larva or caterpillar of a silk moth. It is an economically important insect, being a primary producer of silk.
plate boundaries focus....
Answers
Answer:
Plate boundaries are important because they are often associated with earthquakes and volcanoes. When Earth's tectonic plates grind past one another, enormous amounts of energy can be released in the form of earthquakes.
Explanation:
Describe how scientific investigations lead to new scientific questions.
Answers
Answer:
Scientific investigations produce evidence that helps answer questions and solve problems. If the evidence cannot provide answers or solutions, it may still be useful. It may lead to new questions or problems for investigation. As more knowledge is discovered, science advances.
Someone plz help me :(
Answers
Answer:
c
Explanation:
Non example of a neutron
Answers
Answer:
isotope of the element hydrogen called protium. Protium,
Explanation:
contains a single proton and a single electron, is the simplest atom.
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HELPS DONT GUESS ( I give BRAINLEST)
3. The digestive system contains cells
that produce enzymes responsible for
breaking down foods that we eat. The
part of the cell responsible for this is the
a) Nucleus
b) Ribosome
c) Endoplasmic reticulum
d) Golgi
Answers
Answer:
D. Golgi
Explanation:
The golgi creats the lysosomes which break down foods
Which characteristic should describe all evidence collected by a scientist?
Answers
Answer:
creativity, curiosity, Logical
help pls
Many populations exhibit the following growth curve.
Which statement(s) below accurately are describing the growth as shown on the graph. NOTE: There is MORE THAN ONE correct answer. Choose ALL that apply.
Select 3 correct answer(s)
Question 5 options:
Phase B of the graph is showing a population that has reached its carrying capacity.
When both phases of the graph are looked at together, it shows logistical growth of a population after growing exponentially and reaching its carrying capacity .
Phase B of the graph is showing exponential growth only.
The entire graph shows two organisms competing for space.
Phase A of the graph is showing exponential growth only.
Answers
Many populations exhibit the following growth curve.. Here option 1, 2, 3 are correct which describe the growth. Phase B of the graph is showing a population that has reached its carrying capacity.
What is carrying capacity ?
The carrying capacity of the individual is the maximum number of population size of the species in a sustainable environment which is indefinitely reach up to the limit of no further growth.
Carrying refers to support and Capacity means it is the ability of an organism to reproduce the maximum output, when population reaches the limit of carrying capacity then the mortality will be greater than natality.
The importance of Carrying capacity is mainly focused on the concept of sustainability, imbalance in the environmental and Global warming which are the causative agent, eradication of poverty and practices are also increase the importance of carrying capacity.
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Approximately what amount of the Earth's surface area is covered by water?
A) two thirds
B) four seventh
C) three fourths
D) one eighth
Answers
Answer:
three fourths
Explanation:
I will give branliest
5. Read the sentence, find the error and rewrite it.
Trypsin secreted by salivary glands digests the carbohydrates and it is also
called as Salivary amylase
Answers
Salivary amylase is a glucose-polymer cleavage enzyme that is produced by the salivary glands.
In the nitrogen cycle,which of the following conversions is carried out by nitrifying bacteria?
Answers
Answer:
Nitrifying bacteria carry out aerobic biological ammonia (NH3) oxidation to nitrate (NO3−) pls mark me branilest
last question i need answered. thank you all for those who helped me
Answers
Answer:
the large mouth bass and the wood duck
CAn you help me with this question on abiotic and biotic
Answers
biotic and non living
Describe an alternative name for Enzymes. Explain why is this an appropriate term?
Answers
Select the correct answer.
What’s a disadvantage of the point count method of population monitoring?
A.
It leads to the death of the sampled individuals.
B.
It only records trends in population at fixed locations in the ecosystem.
C.
It requires traversing through the ecosystem, which may be difficult in rugged terrain.
D.
It’s only useful for monitoring organisms that are fixed in one place.
E.
It requires capturing the animal for a brief period of time.
Answers
Answer:
it's only useful for monitoring organism that are fixed in one place
Answer:
It only records trends in population at fixed locations in the ecosystem.
Explanation:
I got a 100%
name five substances found in caspular space
Answers
Answer:
Bowman's capsule encloses a cluster of microscopic blood vessels—capillaries—called the glomerulus, where wastes are filtered from the blood.
Explanation:
Cells are made of organelles, specialized structures that each perform specific functions that help the cell maintain homeostasis. This is much like the body systems work together to help the body maintain homeostasis. Consider the function of the nervous system. Which organelle is most similar in function?
Answers
Answer:
Organelles serve specific functions to keep a cell alive.
Explanation:
Organelles are specialized structures that perform various jobs inside cells. The term literally means “little organs.” In the same way organs, such as the heart, liver, stomach, and kidneys, serve specific functions to keep an organism alive, organelles serve specific functions to keep a cell alive.
Answer: D i just took the test
Explanation:
Question 5 (1 point)
About what percent of water is usable by humans and other members of the
biosphere.
17%
33%
0 72%
1%
%
Answers
Answer:
0.72% or 1%
information differs from source to source so it's difficult to find a percentage that everyone agrees on
What would an organism need to do to release energy
from a carbohydrate, a lipid, or a protein? What two
elements are involved?
Answers
Organism needs enzymes in order to release energy from carbohydrate, a lipid, or a protein.
Amylase is the enzyme which is responsible for the breakdown of carbohydrates secreted by salivary glands. Pepsin, trypsin and chymotrypsin are the enzymes responsible for the digestion of proteins while on the other hand, lipase is the enzyme that is responsible for the digestion of fats in the body so we can conclude that enzymes are required by the organism for the release of energy.
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Need the answers due in a hour
Answers
Answer:
1) Description of coal:
2)Benefits of using coal for electricity
3)Negative consequences of using coal:
Explanation:
1)Coal is a black rock formed by decomposing organic material over millions of years.
2)Coal contains more energy and it is also cheaper than other fossil fuels.
3)Using coal releases more carbon dioxide than other fossil fuels and fosil fuel alternatives, causing damage to land, water and air.
circle the term that does not belong in each of the following groups, and briefly explain why it doesn't belong rock, cells, metabolism, growth
Answers
Answer:
Rock
Explanation:
Rock doesn't belong in the group because it's a non-living thing. It can't reproduce like cells do, it can grow (growth means ability to increase in size, height) and it can't undergo metabolism.
How do plant and animal breeders
use the process of artificial
selection to increase productivity
in their crops and herds?
A. The breeders choose organisms with the most
desirable traits and breed them.
B. The environment selects the traits that are
passed on, and the breeders have no control over
it.
C. Artificial selection is a theory and does not
work, so breeders do not use it.
Answers
A animals and plants have sources
I think
Selective breeding is the practice of pairing parents who share particular features in order to produce offspring who have a greater number of desirable traits.Thus, option A is correct.
What plant and animal breeders process artificial selection?Selective breeding is the practice of pairing parents who share particular features in order to produce offspring who have a greater number of desirable traits. Humans have carefully selected a wide range of plants and animals for thousands of years, including agricultural species with higher yields.
Instead of allowing the species evolve spontaneously without human involvement, as in natural selection, people chose animals or agricultural products based on desirable qualities, a practice known as "selective breeding,” or artificial selection.
Therefore, The breeders choose organisms with the most desirable traits and breed them.
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good morning
define filtration process
Answers
Answer:
Good morning
Have a great day ahead.
❤❤
Answer:
Filtration is the process of separating suspended solid matter from a liquid, by causing the latter to pass through the pores of some substance
Which variable responds to the changes of the independent variable? A-independent B-causation C-dependent D-Controlled
Answers
Answer:
The dependent variable
Explanation:
The independent variable is always changed by the scientist, and what happens then is known as the dependent variable because it depends on the indépendant variable!
