Answer:
See the answer below
Explanation:
The light microscope uses visible light to produce images of objects on its slide while the electron microscope uses beams of electrons to project the image of specimens. Color is a property of photons of light, hence, the light microscope is able to produce images of specimens in their natural colors
The areas of the specimen on an electron microscope in which the beams of electron pass through usually appear white while other areas appear black. Hence, the electron microscopes can only produce grayscale images of specimens unless a false color is added to make the images visually appealing.
Scanning electron and transmission electron microscopes only produce grayscale images because electrons do not have colors.
Electrons can emit energy in the form of light when they return to a lower energy level. The color depends on the difference in energy between the two different levels.The color is a property of light, thereby light microscopes that use visible light to generate images can produce colored images.Conversely, scanning and transmission electron microscopes use an electron beam to image a sample, which does not record any color value.In conclusion, scanning electron and transmission electron microscopes only produce grayscale images because electrons do not have colors.
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which structure is found mostly in green plants
A. Lysosome
B. Mitochondria
C. Chloroplast
D. cytoplasm
Answer:
C
Explanation:
cuz it is
Answer:
Chloroplast
Explanation:
How does a decrease/decline in a top predator impact biodiversity in an ecosystem?
Please help please help please help please help please help please help please help please help please help please help please help please help please help please help
Answer:
Osmosis across the membrane
Explanation:
The diagram shows the movement of water molecules from outside the cell to the inside of the cell. The concentration of water molecules is higher outside of the cell than inside the cell, meaning the water molecules are moving from a high concentration to a low concentration across the semi-permeable membrane, a process called osmosis.
Exocytosis is the movement of molecules from the inside of the cell to the outside via a vesicle. The vesicle fuses with the plasma membrane and the contained substances are released outside the cell.
Active transport is the movement of molecules against their concentration gradient and requires energy.
Facilitated diffusion is used by molecules that cannot freely cross the plasma membrane (e.g. large polar molecules and ions)
Answer:
Osmosis across the membrane
Explanation:
Choose the BEST definition of Osmosis
a) The movement of water up a straw
b) The movement of water as the temperature of the water increases
c) The movement of water across a semipermeable membrane
d) The movement of any liquid as it cools
Answer:
The answer is c
Explanation:
The movement of water across a semipermeable membrane....
LD
11
12
13
Kaya had an organ transplant. She went to the doctor a week later, and the doctor did a blood test. Her lymphocyte count
had increased. She went to the doctor a month later for the same test, and her lymphocyte count was higher. What is the
best explanation as to why her lymphocyte levels were increasing?
O Kaya was given antibiotics to prevent infections.
Kaya's antigens were attacking the tissue.
Kaya was not tissue typed prior to her surgery, and her body is mounting an immune response.
O Kaya took her immunosuppressant drugs weekly, which increased her lymphocyte count.
Answer:
The best explanation for the increased lymphocyte levels in Kaya is that she was not tissue typed prior to her surgery, and her body is mounting an immune response.
Explanation:
When performing an organ transplant, it must be verified whether the organ to be transplanted is compatible -by tissue typing- with the recipient, since it is recognized as a foreign body by the body and can be rejected.
One of the immunological responses to organ rejection is called cell rejection, involving T-helper and cytotoxic lymphocytes.
It is very likely that in Kaya's case the tests have not been performed correctly, and she is experiencing rejection of the organ she received. The progressive increase in lymphocytes may be an indication of this.
The other options are not possible because:
Administering antibiotics should not raise lymphocyte levels. There is no evidence of antigen attack. Immunosuppressant drugs do not increase lymphocyte count.1. What is the cell?
Answer: Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. ... Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.
Explanation:
What happens to the activity of an enzyme as the sample is boiled at 100 C
Answer:
enzyme will boil
Explanation:
100c = 212f
Answer:
it will melt.................
Below are some tasks performed in Agriculture, Food, and Natural Resources jobs. Select the tasks that sound interesting or enjoyable to you.
A. planting, tending, and harvesting plants
B. operating heavy equipment like tractors or harvesters
C. treating sick and injured animals
D. performing inspections to ensure that safety
regulations are followed
E. performing experiments in laboratories
F. supervising other workers
Answer:
select anything. its all correct
Explanation:
i just did it
Answer:
select anything. its all correct
Explanation:
Which type of feedback always strengthens or increases the response of the stimulus?
Answer:
Now, there are two types of each approach, positive and negative. Positive reinforcement is a process that strengthens the likelihood of a particular response by adding a stimulus after the behavior is performed.
PLEASE HELP !
Answer the following questions.
10) Select the reactants in the light-dependent reaction. Select all that apply.
carbon dioxide
light
nitrogen
oxygen
water (H2O)
11) Identify the products of the light-dependent reaction. Select all that apply.
ATP
oxygen
carbon dioxide
nitrogen
NADPH
light energy
12) The reactants in the dark reaction are: ___, ___, and ___.
ATP
NADPH
carbon dioxide (CO2)
water
light energy
oxygen
13) Identify the product of dark reaction.
O2
sunlight
water
sugar (carbohydrate)
nitrogen
Answer:
its C B A B
Explanation:
Photosynthesis is a series of metabolic reactions by which plants and algae use sunlight, water (H2O), and carbon dioxide (CO2) to produce molecular oxygen (O2) and energy in the form of carbohydrates (glucose).
Photosynthesis has two types of reactions:
The light-dependent reactions. These reactions convert light energy into chemical energy (ATP and NADPH).The light-independent reactions (dark reactions or Calvin Cycle). These reactions fix carbon from CO2 into molecules which are then used to produce sugar (glucose).The reactants in the light-dependent reaction include light and water (H2O).The products of the light-dependent reactions are ATP, oxygen and NADPH.The reactants in the dark reactions are ATP, NADPH and carbon dioxide (CO2).The product of the dark reactions is sugar (carbohydrates).In conclusion, photosynthesis has two types of reactions: light-dependent reactions and light-independent (Calvin Cycle) reactions.
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The dorsal body cavity is divided into which two cavities?
the thoracic cavity
the cranial cavity
the vertebral cavity
the pelvic cavity
the dorsal cavity
Answer:
it is subdivided into the cranial cavity
Answer:
The second and third
Explanation:
Describe how the skin cells, neurons, muscle cells, and blood cells you have observed relate to the functions of skin, nerve, muscle, and blood tissue.
Answer:
The form makes the function, this saying is named by many scientists, and they were the ones who made a relationship with the physiology of the organ or tissue and the shape of the cells that make it up.
Explanation:
In the case of neurons, they have extensions to spread and transmit signals, epithelial cells form many layers and have the ability to shed, that is why their main function is the body's innate protective barrier.
Red blood cells are double-headed and enucleated, to be made up of proteins that conform to oxygenation and thus diffuse oxygen well throughout the body.
And finally the muscle cells, which are tapered, with internal sarcomeros, similar to an elastic, to be able to carry out effective contractions starting from a certain length.
A faster moving object has:
a. more potential energy
b. more kinetic energy
c. equal kinetic and potential energies
d. energy based on the weight of the object
d. energy based on the weight of the object
what are 3 ways that a plant cell is different from an animal cell
Answer:
cell wall, chloroplasts, central vacuole, specialized plastids
Explanation:
Answer: Chloroplasts, the cell wall, and vacuoles.
Explanation:
How do high temperatures
affect enzyme activity?
Answer:
Increased temperatures can cause enzymes to work more quickly, if the temperature gets too high the enzyme stops working.
Explanation:
If the temperature around an enzyme gets too high, the enzyme loses its shape, which is known as denaturation, and ceases to work.
Foreign particles are caught in the....
O Reticulum
O Omasum
OSmall Intestine
O Large Intestine
Gordon is going for a run through the park, but it is cold outside. The low outside temperature could affect his personal safety.
T
F
Answer:
True
Explanation:
If it is super cold or super hot outside then it could cause some serious health problems.
Heatstroke and hypothermia can be lethal if not dealt with.
Answer:
This is true
Explanation:
It just is
PLEASE HELP❤️❤️❤️
Is endocytosis a form of active
transport?
A. Yes, because molecules move down the
concentration gradient without using energy.
B. No, it is a form of diffusion.
C. Yes, because it requires energy to move a
molecule against a concentration gradient.
Answer:
A. Yes, because molecules move down the
concentration gradient without using energy.
Explanation:
Active transport is the energy-requiring process of pumping molecules and ions across membranes against a concentration gradient. Both endocytosis and exocytosis are active transport processes.
Hope that helps!
please help will mark brainliest ⚠️
Answer:
D. it would produce smaller amounts of more concentrated urine
Explanation:
In salt water, the concentration of salt would be higher outside the cells than inside. Therefore, the concentration of water inside the cells is higher outside than in. Water leaves the skin and gills via osmosis, moving from a high concentration to a low concentration.
This means the urine is highly concentrated, and produced in small volumes (as most of the water has left via osmosis, not urination)
What happens to the concentration of lactic acid as workout intensity increases? What happens to blood pH as the concentration of lactic acid increases?
As exercise intensity increases there comes a break point where blood lactate levels will start to rise (production starts to exceed clearance). This is often referred to as the lactate threshold i think (LT). If exercise intensity continues to increase a second and often more obvious that increase in lactate accumulation is seen.
If an increase in acid overwhelms the body's acid-base control systems, the blood will become acidic. As blood pH drops (becomes more acidic), the parts of the brain that regulate breathing are stimulated to produce faster and deeper breathing (respiratory compensation). hope this helped
Experiment: 10 people are at rest and their blood pressure is taken using a blood pressure devise; then, you have these 10 people do 50 jumping jacks and re-measure their blood pressure. What is the dependent variable?
Answer:
Blood pressure measurements
Explanation:
Dependent variables are the values that are measurable.
Percent nitrogen is found in earths atmosphere
Answer:
78%
Explanation:
Most of the atmosphere is gas, and 21% is oxygen
How can there be strong and weak muscle contractions if a single
muscle fiber always contracts to its full extent?
Answer:
As more and larger motors units are activated the force of muscle contraction becomes stronger.
Explanation:
The role of the cell membrane is most like the job of which person?
Answer:
The officer that allows people in and out of the crime scene.
Explanation:
The cell membrane chooses what comes in and out of the cell, therefore the officer would be most similar to the job of the cell membrane.
Answer:
It has a job similar to a police officer who allows select people to enter and leave a crime scene.
Explanation:
The primary purpose of the cell membrane is to preserve the cell from its surroundings. The cell membrane manages the movement of materials in and out of cells and organelles. In this form, it is selectively perforable to ions and organic molecules. It is the same as of police officer or security guard that check the people and allow only a few to enter a specific place.
4
Which of the following best summarizes the effects that plants have on the global carbon
cycle? *
(1 Point)
Plants perform cell respiration, removing carbon from the atmosphere.
Plants perform photosynthesis, adding carbon to the atmosphere.
Plants perform both photosynthesis and cell respiration and cause a net decrease of carbon in the atmosphere.
Plants perform both photosynthesis and cell respiration and cause a net increase of carbon in the atmosphere.
5
Primary producers are organisms that
Answer:
Plants perform both photosynthesis and cell respiration and cause a net decrease of carbon in the atmosphere.
Explanation:
Plants are living organisms capable of performing a process called photosynthesis, which they use to synthesize their food (sugar). They use carbon in form of carbon dioxide, which they absorb from the atmosphere via their stomata.
However, plants like every other living organism, also perform cellular respiration. Cellular respiration releases carbon in form of carbon dioxide into the atmosphere. Plants use more carbon dioxide than they release into the atmosphere, hence, they contribute to global carbon cycle perform both photosynthesis and cell respiration and cause a net decrease of carbon in the atmosphere.
Solar energy trapped by gases in Venus's atmosphere causes ____.
a.
clouds to form
c.
the greenhouse effect
b.
its slow rotation
d.
a cooling effect
Please select the best answer from the choices provided
A
B
C
D
Answer:
C.The green house effect
Explanation: I got a 100 on my edgu2020 and this was a question
Answer:
C. Greenhouse Effect.
Explanation:
How do Bactaria spread?
Explanation:
Bacteria or viruses can be passed on by touching or shaking hands with another person. Touching food with dirty hands will also allow viruses or bacteria from the intestine to spread. Bacteria or viruses can be passed on by touching or shaking hands with another person.
Answer:
bacteria are spread in hand to hand touch and spread the virus
What do the blue whales and the fish have in common in the food web?
Answer:
Filter feeders
Explanation:
Blue whales use their baleens to filter the water and the krill they catch, and many fish hunt for plankton at the surface of the water while, again, filtering out the water.
Define lysosome. It's one if those answers
Answer:
membrane-bound cell organelle that contains enzymes
Explanation:
I took into to biotechnology and it was in my notes
Two different versions of genes that can lead to different phenotypes are called