When working with a microscope to focus on a specimen identify one safety issue to consider when switching to a higher power objective
Answer:
The correct answer is - One should always look on the side of the microscope so they don't break the slide and use fine adjustment knob only in order to avoid damage.
Explanation:
At the point when an example is in the center at high force, there might be 1-2 millimeters of room between the high power lens and the slide. On the off chance that you check from the side and see more space than that, you are not even close to having the example in the center.
In the event that you need a particular cell in the lower power field of view to be obvious in the high power field of view, it must be in the focal point of the low force field before you switch up to high power!
One should always look on the side of the microscope so they don't break the slide and use fine adjustment knob only in order to avoid damage.
In the news we often hear statements like “the coronavirus can ‘live’ on surfaces for three days or more”. Based on our class discussion, why is this statement not true?
NEXT QUESTION
what characteristics of life do viruses seem to have that can make this a confusing issue? Include evidence from the article above in your response.
Answer:
it stayys on surfaces fir up to 2 weeks unless disinfected
Explanation:
for the first one it because it's a airborne disease you dont get it from touching things.
Target organs most often regulate the pituitary gland via _________.a. negative feedback inhibitionb. positive feedback inhibitionc. up-regulationd. down-regulatione. antagonistic regulation
Answer:negative feedback inhibition
Explanation:
7th grade life science question asks: Does bacteria have defined boundaries? Does algae have defined boundaries? Only requires a yes or no answer!
Answer:
bacteria does not have fined boundaries
10. Define the following terms:
a. Nucleoid-
b. Mesosomes -
d. Capsid -
e. Plasmalemma-
Answer:
Alright, sure thing.
Explanation:
a. Nucleoid- The nucleoid (meaning nucleus-like) is an irregularly-shaped region within the cell of a prokaryote that contains all or most of the genetic material.
b. Mesosomes- Mesosomes or chondrioids are folded invaginations in the plasma membrane of bacteria that are produced by the chemical fixation techniques used to prepare samples for electron microscopy.
d. Capsid- A capsid is the protein shell of a virus, enclosing its genetic material.
e. Plasmalemma- The cell membrane is a biological membrane that separates the interior of all cells from the outside environment which protects the cell from its environment.
Answer:
a. nucleoid - It is an irregulary shaped region within the procaryotic cell that contains all or most of the genetic material.
b. Mesosomes - these are folded invaginations in the plasma membrane of the bacteria that are produced by the chemical fixation techniques used to prepare samples for electron microscopy.
c. Caspid - a caspid is the protien shell of a virus, enclosing its genetic material.
d. Plasmalemma - It is a biological membrane that separates the interior of all cells from the outsise environment which protect the cell from its environment.
The cheek smear slide is made by taking a q-tip or toothpick, rubbing it on the inside of your mouth (to remove cells) and then wiping or smearing it onto a blank slide. A stain is used on the cells so that you can see them, otherwise, they would be see-through. Look at the cheek smear slide using the 10x objective (total magnification of 100x). Approximately how many cells do you see inside the red circle
Answer:
The number of cells that will be viewed will depend on the size of the cells and the size of the red circle on the slide.
Explanation:
The cells have different sizes and this influences the number of cells that you will be able to view under a microscope.
The intensity with which the smear was made will also influence the number of cells viewed, as well as the quality and quantity of dye you used on the slide.
In summary, we can say that the number of cells that you will be able to visualize is relative and only the experience, in itself, will be able to determine a number.
Which of the following particles always has a positive charge?
A. Neutron
B. lon
C. Electron
D. Proton
Answer:
D.
Explanation:
Answer:
proton
Explanation:
Which best matches objects that a scientist would include on a list describing a forest ecosystem?
different types of animals and plants and the forest soil
one animal species, the soil, water, and nutrients
all the living things in the forest ecosystem
different types of soil, rocks, and water sources in the forest
Answer:
The answer is A
Explanation:
Basically using logic you get this answer
I just took the test and got it right
Hopefully this helps you
pls mark brainlest
The objects that a scientist would include on a list describing a forest ecosystem are: A. different types of animals and plants and the forest soil.
What is a forest ecosystem?A forest ecosystem can be defined as a dynamic biological community that consists of animals and plants (biotic factors) and the physical environment (abiotic factors) such as forest soil in which they interact.
This ultimately implies that, the objects that a scientist would include on a list which describes a forest ecosystem are as follows:
Different types of animals.Different types of plants.The forest soil.Read more on an ecosystem here: brainly.com/question/15971107
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what causes an ionic bond a. two atoms share electrons b. two ions share electrons c.a positive ion is attracted to another positive ion d. positive ion is attracted to a negative ion
Answer:
two atoms share electrons
Which is a function performed by the central nervous system (CNS)? Select all that apply.
processing information that is received from the stimuli receptors
receiving stimuli and making the body react to those stimuli
sending out information so that the body can react appropriately to stimuli
coordinating reflexes and reactions to stimuli
sensing stimuli and causing reactions in the body
Answer:
Which is a function performed by the central nervous system (CNS)? Select all that apply.
processing information that is received from the stimuli receptors **
receiving stimuli and making the body react to those stimuli
sending out information so that the body can react appropriately to stimuli **
coordinating reflexes and reactions to stimuli **
sensing stimuli and causing reactions in the body
Explanation:
I took test
The function that should be performed by the C-N-S should be option a, option third, and option fourth.
What is central nervous system (C-N-S)?The central nervous system (C-N-S) should be comprise of the brain and the spinal cord. It this, it contain 2 parts of the nervous system. The other part should be considered as the peri-ph-e-r-al nervous system, which comprise of nerves that linked the brain and spinal cord to the rest of the body.
Therefore, we can conclude that The function that should be performed by the C-N-S should be option a, option third, and option fourth.
Learn more about nervous system here: https://brainly.com/question/18616395
Give two examples of scientific theories.
What are the two major components of the blood?
Independent Dependent 1. A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years.
Answer:
Independent is hormone and dependent is the weight
1. Which diagram in Figure 1.1 would illustrate the statement below?
The forehead is superior to the nose.
2. Which diagram in Figure 1.1 would illustrate the statement below?
The sternal is anterior to the spine.
3. Which diagram in Figure 1.1 would illustrate the statement below?
The heart is posterior to the breastbone.
4. Which diagram in Figure 1.1 would illustrate the statement below?
The elbow is proximal to the wrist.
the movement of matter across a cell membrane against a concentration difference is called active transport and it requires
Answer:
oSMOSIS AND AQUAPORINS
Explanation:
The movement of matter across a cell membrane against a concentration difference is called active transport and it requires energy often in the form of ATP.
There are two types of transports across a cell membrane:
Passive transportActive transportPassive transports involve the movement of materials across the cell membrane from the region of higher to the region of lower concentration. It can occur by simple or facilitated diffusion and does not involve the expedition of energy in any form.
Active transport involves the movement of materials across the cell membrane from the region of lower to the region of higher concentration. It requires the expedition of energy, usually in the form of ATP.
More on cellular transportation can be found here: https://brainly.com/question/17128226
You encounter a new compound that is bright purple and smells of violets. It sticks to surfaces in a way similar to water and can replace water in the running of living cells. You might expect that this new molecule will make
A. hydrophobic bonds.
B. ionic bonds.
C. peptide bonds.
D. covalent bonds.
E. hydrogen bonds.
One encounters a new compound that is bright purple and smells of violets, it sticks to surfaces in a way similar to water, so the new substance might be making the hydrogen bonds that are present in Option E.
What is hydrogen bonding?Hydrogen bonding is a type of intermolecular force that occurs when a hydrogen atom is covalently bonded to an electronegative atom, and this type of bonding is relatively weak compared to covalent bonds, but it can play an important role in stabilizing the structures of molecules as the new compound sticks to surfaces in a way similar to water, and it is polar and makes the dipole-dipole interaction possible, so the new substance would make the hydrogen bond.
Hence, the new substance might be making the hydrogen bonds that are present in Option E.
Learn more about hydrogen bonding here.
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The subunits from which ATP is made are
ADP and phosphate.
FAD and NAD+.
FAD and NADPH.
ADP and FAD.
ADP and NAD+.
Explanation:
The subunits from which ATP is made are ADP and Phosphate
The subunits from which ATP is made are ADP and phosphate.
ATP, meaning Adenosine triphosphate, is a biological molecule responsible for the storage and release of energy in living cells. ATP is structurally made up of three phosphate groups, adenine base and a ribose sugar. However, ATP stores energy for living cells when one phosphate group is added to adenosine diphosphate (ADP) i.e. ADP + Pi = ATP. Therefore, the subunits from which ATP is made are ADP and phosphate.Learn more at: https://brainly.com/question/8367148?referrer=searchResults
Becca wants to answer the following scientific question.
"On average, how far do female sea turtles crawl up beaches when making their nests?"
What type of scientific investigation should Becca perform to accurately answer the question with direct observations?
A.
She should make a model using toy sea turtles and an aquarium.
B.
She should read about female sea turtles in a book.
C.
She should create an artificial environment with sand and a swimming pool.
D.
She should observe female sea turtles making nests in their natural habitats.
Which is associated with the reproductive system?
a the seminal vesicles
b the fallopian tubes and ovaries
Cthe production of gametes and sex hormones
d
All of the above are associated with the
reproductive system.
(20points)
Some cells produce and secrete high levels of digestive proteins. Which organelles would you expect to be abundant in those cells?
A) Nuclei and vacuoles
B) Rough ER and ribosomes
C) Lysosomes and ribosomes
D) Mitochondria and chloroplasts
Answer:
option b is correct
Explanation:
ribosomes are those organelle whose function is to produce large amount of protein for example pancreas is responsible for creating several digestive enzyme and the cells which produce these enzyme contain many ribosomes it has two subunits which are either freely floating or embedded within endoplasmic reticulum
Which part of the cytoskeleton anchors the plasma
membrane to the cytoplasm?
actin
secretory vesicles
O tubulin
microtubules
Answer:
Microtubules
Explanation:
Microtubules can potentially form a physical link between the plasma membrane.
A local recreation center has received funding to build a swimming pool. Prior to pool construction, engineers use computer models to compare which of several pool designs require the least amount of energy to be heated. What is the DEPENDENT variable in the computer models? a. pool size b. pool location c. pool shape d. pool temperature
Answer:
D. Pool temperature
Explanation:
The dependent variable in an experiment is the variable that is measured or responds to another variable called the independent variable. The outcome of the dependent variable is dependent on the independent variable.
In this computer model, the engineers compare which of several pool designs require the least amount of energy to be heated. The TEMPERATURE at which each pool design is heated is dependent on the type of pool design used. Hence, POOL TEMPERATURE is the dependent variable. It is the variable being measured in response to the type of pool design used.
If influenza acquired by sharing a drinking glass, then the glass was acting as a:____.
a. vector.
b. reservoir.
c. vehicle.
d. fomite.
Answer: Option C.
Vehicle
Explanation:
It is vehicle because, vehicle is a non living source that serve as an agents or carrier if infectious diseases and that infect or affect many people.
In this case a drinking glass of water is a non living source because it is does not have life and the pathogens that causes influenza are in it and as people begin to share the drinking glass of water, the pathogens are transmitted and they have influenza.
What is the role of each molecule in the cell
membrane?
Answer:Phospholipids form the basic structure of a cell membrane, called the lipid bilayer. Scattered in the lipid bilayer are cholesterol molecules, which help to keep the membrane fluid consistent. Membrane proteins are important for transporting substances across the cell membrane.
Why is there not such thing as cold?
Answer:
Hmm.
Explanation:
The reason is that energy is always transferred from a body at a higher temperature to a body at a lower temperature and, as a result, there is no such thing as “cold” flowing from the ice to the drink. Distribution of the kinetic energies of particles in a sample at two different temperatures.
Scientists recently identified the function of three proteins in plants. The proteins regulate the production of fatty acids,
which are found in fats and oils. Which question will most likely be asked about the results, leading to more
investigations?
A. How are proteins produced?
B. Are the plants nonrenewable resources?
C. How much energy do fatty acids produce when they are burned as fuel?
D. How can the proteins be used to increase the amount of oil produced by a plant?
Answer:
How can the proteins be used to increase the amount of oil produced by a plant?
Explanation:
I just took the test and got it right.
Hope it helps!
Like proteins in trendy, plant proteins play various enzymatic, structural, and purposeful roles (photosynthesis, biosynthesis, shipping, immunity, etc). additionally, they act as storage mediums to satisfy the boom and nutritional demands of developing seedlings
What proteins are located in flowers?
Plant proteins, basically globulins, were acquired mainly from the protein-wealthy seeds of cereals and legumes. Small amounts of albumins are determined in seeds. The pleasant-recognized globulins, insoluble in water, can be extracted from seeds through remedy with 2 to 10 percent solutions of sodium chloride.
What are the 6 functions of proteins?Proteins have a couple of capabilities, along with performing as enzymes and hormones, preserving the right fluid and acid-base stability, imparting nutrient transport, making antibodies, permitting wound healing and tissue regeneration, and providing electricity when carbohydrate and fats intake is insufficient.
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what the advantages of integrated farming?
Answer:
Explanation:
Such farming system increases production to meet the demands of Nigerians. Proper processing of waste and related substances increases the profit of farmers. Intensification of crops growth maximizes income in relation to area, time and efforts
Answer:
-Promotion of Agro-Industry
-Increased Input Efficiency
-Cost Minimization for Input Use
-Increased Employment
-Fodder Security for Livestock
-Recycling
-Continuous Income Round the Year
-Energy Saving
Please help! Can someone help me answer this biology question for 9th grade biology living earth .
Answer:
The Sea Star lives in the Ocean
Explanation:
Answer:
The ocean is home to the sea star.
Hope this helps :)
(100 POINTS AND BRAINLYEST) The rate of geologic processes can happen quickly or take a long time. True False
Answer:
True
Explanation:
As many as ten laminations per mm can occur in these rocks. It does not take long periods of time to form.
Answer: The answer is a short amount of time
Explanation:
Which tiny, round “factory” puts together protein and is often found in the endoplasmic reticulum?
Answer:
I think it's ribosomes
