Answer:
The intercellular junctions between plant cells are known as plasmodesmata and are used to transfer materials and molecules between neighboring cells.
30 POINTS!!
Scientists must use microscopes to study the cells of living things. Explain why microscopes are necessary to study cells. Then, describe some things microscopes have helped scientists discover about cells
A cell is the smallest unit of life. Most cells are so small that they cannot be viewed with the naked eye. Therefore, scientists must use microscopes to study cells. Electron microscopes provide higher magnification, higher resolution, and more detail than light microscopes
Answer:
A cell is the smallest unit of life. Most cells are so small that they cannot be viewed. Therefore, scientists must use microscopes to study cells. Electron microscopes provide higher magnification, higher resolution, and more detail than light microscopes.
Explanation:
genetic differences between populations tend to be reduced by
Answer:
I think it will be gene flow, but i'm not for sure
Explanation:
the gene pools can be combined in gene flow, reducing variation between the groups.
опишите общие функции липидов и углеводов в организме
помогите пж
Answer:
Большая часть энергии, необходимой человеческому организму, обеспечивается углеводами и липидами; Фактически, 30-70% энергии, используемой во время отдыха, поступает из жира. Как обсуждалось ранее, глюкоза хранится в
Explanation:
hope it helps
what is the common method to prevent diseases class 9
A catalyst is not a product or reactant of a chemical reaction.
O True
O False
What occurs when there is a higher concentration of molecules on one side of a membrane and the molecules flow to the other side to balance the concentration?
Answer:
diffusion
Explanation:
The concept of diffusion states that molecules like to travel from areas of high concentration to low concentration.
Let's think about an example. Let's say you are having a party at your house and in one room there is 100 people and in the other room connected to it, there is only 10 people. What do you think is going to happen as time passes? Right, people are going to move to the room where there is less people so as to equally disperse themselves across the area. The same thing happens within our body with ions and gases.
Ions can diffuse into or out of cells based off their concentration gradients. If there are too many ions on one side, they will simply move to the other side. There are different types of diffusion. Passive diffusion and facilitated diffusion, but those are for a different conversation.
What is osmosis? ???
Answer:
In biology, osmosis is defined as the net movement of water molecules through a semipermeable membrane (e.g. cell membrane) from an area of higher to an area of lower water potential. Other definitions of osmosis are as follows:
The process of a solvent diffusing through a semipermeable membrane from an area of low solute concentration to an area of high solute concentration
The tendency of water to flow from a hypotonic solution (low concentration of dissolved substances) to hypertonic solution (higher concentration of dissolved substances) across a semipermeable membrane
In chemistry, osmosis is defined similarly. It is the passage of a pure solvent from a solution of lesser to one of greater concentration of solutes when the two solutions are separated by a membrane that selectively prevents the passage of solute molecules while allows the solvent molecules to pass through.
For more information see https://www.biologyonline.com/dictionary/osmosis
Organisms that reproduce by undergoing mitosis are carrying on
sexual reproduction.
asexual reproduction.
Answer:
asexual reproduction l
What types of organisms are prokaryotic and lack a true nucleus?
Answer:
Bacteria and Archaea
Explanation:
Answer:
Single-celled organisms belonging to the Bacteria and Archaea domains are known as prokaryotes. Prokaryotic cells are smaller than eukaryotic cells and lack a nucleus and organelles. A cell wall surrounds all prokaryotic cells. Many of them also feature a polysaccharide capsule or slime layer.
Why is conjugation in bacteria not considered to be sexual reproduction?
A.It can occur between different species.
B.DNA is shared, but no new organisms are produced.
C.Cell division occurs, but no DNA is shared.
D.Conjugation is a form of binary fission, which is asexual reproduction.
Answer:
B.DNA is shared, but no new organisms are produced.
HELP I NEED HELP PLEASE
Answer:
jussm7odygmsysyi5ll5aka5u5aka5ulw5k
Answer:
wich grade ?
Explanation:
tell me to ansewr
What are the final products of light
Answer:
The end products of the light reaction are ATP and NADPH,
what does it mean when one pupil is larger than the other
How can models help us understand what happens during volcanic eruptions?
Answer:
by showing how volcano erupts.
Explanation:
model does not show's how actual volcano erupts but we can assume by seeing model that the actual volacano erupts slowly and the lava erupted by volcano slowly goes down to the ground level and destroy everything near volcano areas:)
multiple sclerosis and atherosclerosis are similar in that they both refer to:
The conditions mentioned are both a type of sclerosis, which refers to the hardening of a certain anatomical feature.
In atherosclerosis, the affected anatomical feature is the artery. This is a condition that causes the obstructions of blood flow through the artery as a result of plaque buildup along the artery walls. Unlike with MS, atherosclerosis does not present symptoms until the obstructions are severe or the plaque loosens, which can lead to heart attacks, among other consequences.
In the case of Multiple Sclerosis, the affected anatomical structure is that of the nerve. This is a condition for unknown reasons, causes the immune system to attack the myelin covers of nerve cells which act to protect the cell. The absence of this cover causes the build-up of plaque along the nerve axon, stiffening and disrupting the communication of the nerves with the central nervous system.
To learn more visit:
https://brainly.com/question/5331652?referrer=searchResults
why is the root of a plant unable to absorb mineral salts from the soil if it is given a poison that prevent respiration?
here is the answer your welcome
help please and thanks
Answer:
where's the diagram A
Explanation:
brainliest me
What do populations need to maintain homeostasis?
|
Answer:
All populations must have an adequate amount of food, water, shelter, and space to maintain homeostasis
If you use direct sunlight to observe a specimen it will damage your eyes.
A. True
B. False
Answer:True
Explanation: Microscopes often use a mirror to direct available light to the specimen platform, so if you don't have enough light it will be difficult to view your specimen and can cause eye strain.
Microscopes may malfunction if stored or used in a location exposed to direct sunlight. Also, direct sunlight may harm the observer's eye if it enters a microscope through the reflector.
For optical microscopes:
Light from outside is sent to the reflective mirror to illuminate the sample. Direct sunlight must be avoided. ... This inexpensive and readily available lamp, also called an incandescent lamp, is widely used in optical microscopes.
Hope this helps you in some way. Aloha
how do the walls of the atria and ventricles compare
can someone plsss help me with questions 7-9
HELP ME WITH THIS PLEASEE
1 List two structures of the circulatory system other than blood.
2 What is the liquid part of the blood called?
3 Why are red blood cells red?
4 State the function of the red blood cells in the circulatory system.
5 State the functions of the two types of white blood cells in the blood.
6 Give two differences between the structure of red blood cells and white blood cells.
7 What are platelets and what is their function in the blood?
Answer:
1 veins and arteries
2 plasma
3 because they contain hymoglobin which is red in colour
4 they carries oxygen around the body
5 lymphocyte : engulf pathogens and destroy them within
phagocytes : sends toxins that destroy pathogens where they are
6 red blood cells are bio concave to increase surface area for carrying oxygen whereas white blood cells some are free form shape especially lymphocytes to squeeze through capillaries in a way to where the pathogens are located
7 platelets are small blood components that helps in blood clotting to avoid the excessive bleeding
what is the evidence that richard wrangham put forward to support his hypothesis that intraspecies aggressiveness was common in the last common ancestor of chimpanzees and humans?
The evidence that was put forward by Richard Wrangham to support his hypothesis that intraspecies aggressiveness was common in the last common ancestor of chimpanzees and humans is that chimpanzees conduct raid against individuals in neighboring territories.
Intraspecies aggressiveness is the form of aggressiveness between humans beings and other animals. They're a threat of action that brings about harm.
Richard Wrangham put forward evidence to support his hypothesis that intraspecies aggressiveness was common as he stated that chimpanzees conducted raid against individuals in neighboring territories.
Read related link on:
https://brainly.com/question/25057356
How do animals survive at lower depths in the ocean? Why would they need to change their buoyancy? Give an example of a marine animal that would need this adaptation and explain why it would be beneficial to have this adaptation.
Answer:
fish
Explanation:
they survive by there gills that can give them oxygen to breath underwater sorry if it is wrong
It needs to accept electrons from calcium to have a full outer shell.
Answer:
mark me brainlest
Explanation:
Calcium, Ca , is located in group 2 of the periodic table, which means that is has two electrons on its outermost shell. In order to have a complete octet, calcium must lose these two outermost electrons, also called valence electrons. Calcium will react with nonmetals to form ionic compounds.
according to the lab manual, in this lab you will view meiotic phases on prepared slides of
Answer:
Set of nine microscope slides demonstrating mitosis and various stages of meiosis in animals and plants.
why are tomatoes red ?
Answer:
Tomatoes are triggered to turn red by a chemical called ethylene. Ethylene is odorless, tasteless, and invisible to the naked (human) eye.
Explanation:
Answer: As the tomato ripens, its color starts to change from green to yellow and then eventually to red. This is due to the breakdown of chlorophyll, which in turn synthesizes a red carotenoid (another pigment group), lycopene. When ripe, the carotenoid can easily be seen as the dominant color of the tomato, red
Explanation:
in biology you'll learn more about this
Greetings, I am interested in Microbiology, General Psychology /A&P
Answer:
Cool! I wish you the best if you decide to pursue this path!
Explanation:
Explain how light, depth, and temperature affect the number and type of organisms that live in each ocean zone
Please help serious answers only
Answer:
Uranus
Explanation:
The mean radius of Uranus is 15,792 miles (25,362 kilometers), giving a diameter four times that of Earth.