Thick or dense smears less likely to provide a good smear preparation for microscopic because it will diminish the amount of light that can pass through making it difficult to visualize the morphology of single cells under the microscope. Some times the stain can't penetrate all of the bacteria.
What is a microscopic smear?A smear is a microscopic specimen.A swab or loop, or the edge of another slide, is used to spread the sample to be examined, such as blood or microbial culture, thinly and unevenly across the slide.Smear preparation involves spreading a small amount of sample on a slide and air drying the film before staining and microscopy.The conventional method, blood film method, drop and rest method, and water-wash method are the four types of smearing methods.Smear microscopy entails collecting a biological sample (typically sputum or other clinical material), fixing it thinly on a glass slide, and staining it with a dye that binds specifically to mycobacteria (making them easier to identify under a microscope).To learn more about microscopic smear :
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You cross a pure-breeding white flower with a pure-breeding red flower, and the offspring are white with red spots. what type of inheritance is this an example of?
If you cross a pure-breeding white flower with a pure-breeding red flower, and the offspring are white with red spots and as F1-hybrid plants have a different phenotype (pink flowers) than either of the true-breeding parents, thus, it is an example of incomplete or partial dominance.
Pure-breeding offspring with pink flowers (Rr) were produced via a genetic cross between a pure-breeding with red flowers (RR) and a pure-breeding with white flowers (rr). It demonstrates that the gene for red could not entirely suppress the gene for white.
The pink flowers on the F1 hybrid plants are a different phenotypic from either of the true breeding parents. This is an illustration of partial dominance.
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How many different compounds (isomers) are there that fit the description of a bromo-chlorobenzene?
The no. Of possible isomers for bromo-chloro benzene is 3.
Three possible isomers for bromo-chloro benzene is 1-bromo-2-chlorobenzene, 1-bromo-3-chlorobenzene & 1-bromo-4-chlorobenzene.
Isomers are identical molecules with different structural characteristics. As a result, although having the same number of atoms in each element, isomers have different atomic arrangements.
Even if all molecules have the same molecular formula, they may have various physical characteristics, especially if their respective functional groups are unique. Isomerization is the transformation of one molecule into another molecule with the same number of atoms. This could happen on its own or maybe a reaction is needed to make it happen.
Isomers are generally divided into two categories:-
Structural isomerism - have same molecular formula but different structural formula. Stereo isomerism - Have same molecular formula but different arrangement of atoms in 3d space.To learn more Stereo isomers, refer this link.
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what stucture is attached to the nuclear membrane
The structure that is attached to the nuclear membrane is the rough endoplasmic reticulum (RER).
The nuclear membrane is made up of two membranes, i.e. an outer membrane as well as an inner membrane. Both these membranes contain phospholipids that are arranged in the form of a bilayer. The perinuclear space segregates the outer and the inner membrane.
The structure attached to the outer membrane, i.e. the rough endoplasmic reticulum (RER) is a cell organelle that is associated with the transport of proteins. It bears ribosomes, which are the prime site of protein synthesis, on its surface. The nuclear lamina is present beneath the inner nuclear membrane.
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What is a function that proteins DO NOT do in the body?
A. Help chemical reactions
B. Create insulation
C. Build tissues and muscles
D. Transport molecules in and out of a cell
Answer:
a
Explanation:
What type of organisms use brumation?
a. Ectotherms
b. Endotherms
c. All hibernating organisms
d. All tortoises
Answer:
Brumation is a type of dormancy used by some ectothermic (cold-blooded) animals, such as reptiles, to survive periods of extreme weather conditions, usually winter. By brumating, these animals can lower their metabolism, heart rate, and respiration to conserve energy.
Explanation:
Give me brainliest if that helped :)
In the title, the word theme refers to
Answer:
The theme in a story is its underlying message or 'big idea'.
I'm not sure this is exactly the answer you're looking for - this is what I understood.
Answer:
The word "theme" is sometimes used to mean an assignment or an essay; however, it can also refer to the central idea or message in a work.
Explanation:
ation The Sun transfers heat to Jane and Theo's bodies as they sit on the sunny bench, increasing their body temperature. Which of the following responses by their bodies would help decrease their temperature and maintain homeostasis? Choose ALL that apply. A Vasodilation; their skin will turn red as blood is moved to the surface of the skin. B. Goosebumps; the muscles under the hair in their skin will contract. C ABC Vasoconstriction; their extremities will turn pale or blue as blood moves to the core of the body. D. Sweating; the water released from their skin will evaporate.
Vasoconstriction; their extremities will turn pale or blue as blood moves to the core of the body also their Sweating; the water released from their skin will evaporate.
Vasoconstriction slows down the body's heat loss through the skin's blood vessels, warming the body. The body attempts to regain homeostasis as part of a negative feedback loop, which includes this action (maintaining a constant internal environment).
As an illustration, vasoconstriction causes the blood vessels to constrict and blood to move at a higher pressure in an effort to actively prevent a hypoxic reaction.
Your sweat glands produce perspiration when your hypothalamus feels that you are too hot, which helps to cool you off. The hypothalamus sends messages to your muscles to twitch in order to warm you up when it detects that you are too cold. Maintaining equilibrium is what we mean by this.
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When does interphase occur?
During Prophase
Between cell divisions
Between Anaphase and Prophase
Before Metaphase
Answer:
Before Metaphase
Explanation:
The late G2 phase occurs before metaphase. The late G2 phases is where interphase occurs.
(Score for Question 1: of 5 points) 1. How is the word theory as it is used in science different from the common use of the word outside of science?
A scientific theory enables predictions; a theory doesn’t .
A theory is a carefully reasoned explanation for an observation of the natural world that is constructed using the scientific method and brings together a number of facts and hypotheses.
A scientific theory is an explanation of some aspect of the natural world that is supported by repeated experiments and tests. The word "theory" often means unverified or unsupported speculation. But for scientists, the theory has almost the opposite meaning. A theory is a rational explanation of some aspect of nature, such as a law, hypothesis, or fact.
A word theory is a carefully reasoned explanation for an observation of the natural world, constructed using the scientific method and putting together a number of facts and hypotheses. It enables scientists to make predictions about future experiments.
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What do light microscopes use to travel through the specimen?
Group of answer choices
electrons
lenses
light
gravity
Answer:
Electrons
Explanation:
Efforts to discover whether the intelligence of children is more heavily influenced by their biology or by their home environments are most directly relevant to the debate regarding.
Efforts to discover whether the intelligence of children is more heavily influenced by their biology or by their home environments are most directly relevant to the debate regarding nature versus nurture.
In the field of psychology, nature versus nurture represents the competition between two factors i.e genetic and environmental that influence behavior in an individual.
Psychologists believe that there are certain behavioral characteristics that are influenced by our genetic makeup. There are other characteristics that are influenced by our environment.
The intelligence of a person is a complex virtue that is dependent on both nature as well as nurture, according to some psychologists. However, scientists still have a debate that which among these two factors is involved more heavily in the intelligence of children. The debate of nature vs nurture is common in determining various psychological aspects.
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What characteristics of life are not independently demonstrated by viruses?
Because they are not formed of cells, viruses cannot maintain a steady state, develop, or generate their own energy. Viruses are more like robots than actual living things, even though they do multiply and adapt to their surroundings.
What aspects of life are exhibited by viruses?The ability to replicate and mutate are two aspects of life that viruses possess, but only in live host cells.
Viruses and bacteria differ greatly from one another. While viruses may grow in both living and nonliving environments, bacteria are found in nature. While viruses might perish without a host, bacteria can live without one. Viruses reproduce by lytic fission, whereas bacteria reproduce through binary fission.
Although they are minuscule as well, viruses are distinct from other microbes.
Viruses are intracellular creatures (they infect the host cell), whereas bacteria are intercellular organisms (they exist in between cells).
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In a negative feedback loop, the sensor, the integrating center, and the effector are always found in different areas of the body. True or false?.
Answer:
In a negative feedback loop, the sensor, the integrating center, and the effector are always found in different areas of the body is false.
Explanation:
Feedback is a method where one element controls another by either positive or negatively feedback. Positive feedback is a method in which an activity's results drive more of the same action to take place inside a feedback loop. It makes the first action stronger. Negative feedback, on the other hand, occurs when the outcomes of an activity prevent that action from happening again. These systems are present in a wide variety of biological systems. Sugar is converted into cells by insulin, which causes a decrease in blood sugar levels. The insulin secretion will stop resulting into low blood sugar levels. The insulin reaction is negative feedback. Thus, the feedback usually helps to keep the system stable. This might be termed as equilibrium homeostasis in biology.
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In an enzyme reaction, the starting material that the enzyme acts on is the:_________
a. coenzyme.
b. subenzyme.
c. product.
d. substrate.
Answer:
the correct answer is D substrate
and
use
In
Which of these characteristics
is NOT true of a virus?
A. A virus has a protein coat known as a
capsid.
B. Viruses can reproduce on their own
without a host.
C. Viruses can contain DNA.
D. Viruses can cause disease.
Answer:
b
Explanation:
As viruses are obligate intracellular pathogens they cannot replicate without the machinery and metabolism of a host cell. Although the replicative life cycle of viruses differs greatly between species and category of virus, there are six basic stages that are essential for viral replication.
4) What is a Moraine Hill?
rocks
Answer:
A moraine is material left behind by a moving glacier. This material is usually soil and rock. Just as rivers carry along all sorts of debris and silt that eventually builds up to form deltas, glaciers transport all sorts of dirt and boulders that build up to form moraines
Explanation:
If a parent cell has 48 chromosomes, how many chromosomes will each daughter cell have after mitosis and cytokinesis occurs? 96 chromosomes 48 chromosomes 12 chromosomes 24 chromosomes
Answer:
48 chromosome
In mitosis, the daughter cells have the same number of chromosome as the parents cell in the form of chromatids( as chromatids sister had separated during anaphase ).
I suggest you to learn( differentiate) about the term like chromatin, chromatid, chromosome, sister chromatids, homologous chromosomes so you can mastered this chapter.
Good luck!
EXPLAIN WHAT HAPPENS AT THE PARTICLES LEVEL FOR A SOLID TO MELT.
Answer:
Particles have increased kinetic energy, moving faster, overcome attractive forces, escape into vapor phase
Explanation:
message
Which is most likely an effect of the Gulf Stream?
Heavy rains in California
Severe drought in Australia
Windy conditions in Europe
Milder winter temperatures in Florida
Answer:
Milder winter temperatures in Florida
Explanation:
-
Which of the following is the process for removing waste from cells?
The process for removing waste from cells is called Exocytosis.
Exocytosis, often known as throwing out dangerous or waste material by cellular organelles, is the act of removing waste from the cell. This is accomplished by lysosomes, also known as secretory bags of cells.Basic Process of Exocytosis Vesicles containing molecules are transported from within the cell to the cell membrane. The vesicle membrane attaches to the cell membrane. Fusion of the vesicle membrane with the cell membrane releases the vesicle contents outside the cell.The only essential organs explicitly involved in the excretion process are the kidneys. While other organs involved in the body's waste removal are also crucial to other important processes.To know more about Exocytosis, visit:
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Why was motion of Earth not observable after the action-reaction event with the ping pong ball or clay ball?
According to Newton’s third law, motion of Earth is not observable because Earth is so large, we cannot perceive the change as it is so negligible.
Newton's third law of motion states that every action has a corresponding and opposing response.
The action-reaction forces can be used to study or observe Newton's third law. When a clay ball or ping pong ball is put to the ground, the clay ball flattens on the side that meets the ground while the ping pong ball rebounds into the air.
Newton's third law states that even though the action-reaction forces on the balls and the Earth were equal in strength and directed in opposing directions during each encounter, the resulting movements of the interacting objects were dependent on their masses.
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Which type of bond has the greatest difference in electronegativity between its atoms?
Nonpolar covalent
Ionic
Hydrogen bonds
Polar covalent
Pls HELPPP
Answer:The electronegativity difference between F-Cl is 3.98 - 3.16 is 0.82. Therefore, in the F-I bond, the electronegativity difference is greatest.
Explanation:
In a diatomic molecule with two identical atoms, there is no difference in electronegativity, so the bond is nonpolar or pure covalent. When the electronegativity difference is very large, as is the case between metals and nonmetals, the bonding is characterized as ionic.Cesium fluoride has both the most electronegative atom and the least electronegative atom. Therefore, it must have the greatest difference in electronegativity between its atoms.
What is the principal negative ion (anion) in the extracellular fluid (ecf) that is present in high concentrations?
The principal negative ion i.e. anion that is present in the Extracellular fluid ( ecf ) in high concentrations is Chloride ( Cl ⁻ ) .
Chloride ion is a major contributor for the Osmotic Pressure gradient between the Intracellular Fluid ( ICF ) and Extra Cellular Fluid ( ECF ) . It plays a role of immense importance in maintaining proper hydration. Chloride also plays an important role to balance cations in the ECF, hence maintaining the electrical neutrality of this fluid.
Hypochloremia is a disease in which blood chloride levels are lower-than-normal . Hyperchloremia is a disease in which blood chloride levels are higher-than-normal blood chloride levels . It can occur due to dehydration, excessive intake of NaCl .
Hence , The principal negative ion i.e. anion that is present in the Extracellular fluid ( ecf ) in high concentrations is Chloride ( Cl ⁻ ) .
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Chloride ion ( Cl ⁻ ) is the principal negative ion i.e. anion that is present in the Extracellular fluid ( ECF) in high concentrations .
Chloride ion is a major contributor for the Osmotic Pressure gradient between the Intracellular Fluid ( ICF ) and Extra Cellular Fluid ( ECF ) . It plays a role of immense importance in maintaining proper hydration. Chloride also plays an important role to balance cations in the ECF, hence maintaining the electrical neutrality of this fluid.
Hypochloremia is a disease in which blood chloride levels are lower-than-normal . Hyperchloremia is a disease in which blood chloride levels are higher-than-normal blood chloride levels . It can occur due to dehydration, excessive intake of NaCl .
Hence , The principal negative ion i.e. anion that is present in the Extracellular fluid (ECF ) in high concentrations is Chloride ( Cl ⁻ ) .
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Help prevent molecules from passing through the extracellular space between adjacent cells.
TIGHT JUNCTIONS are the juntions which does not allow the molecules to pass through the membrane to the adjacent cells
TIGHT JUNCTION is when 2 cell membranes are held together so tightly that nothing can leak like proteins in cell membrane form strand that adheres them tightly example in stomach, bladder, intestinescell junctions is a contact points between plasma membranes of adjacent cells within a tissueadheren junctions is found inside of plasma membrane of each adjacent cell is thick protein (plaque) , plaque from inside of one cell is adhered to plaque inside other cell, transmembrane glycoproteins (cadherins) join cells and adhered to one another so they don't separate when pulledTo know more about TIGHT JUNCTIONS visit : https://brainly.com/question/8293781
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help asp!! Match the answers with picture ILL GIVE BRAINILEST AND 17 points
Answer:
A. Nucleus
B. Electron cloud
C. Protons
D. Neutron
Explanation:
-
Semen is made up of a mixture of secretions from all of the following except? d) prostate gland b) bulbourethral glands c) testes a) seminal vesicles
Semen is a mixture of secretions emanating from each of the following organs except the prostate gland.
What exactly is the prostate gland?In men, the prostate gland is found underneath the bladder and surrounds the top portion of something like the tube which it drains the bladder's urine (urethra). The fundamental function of the prostate is to create the fluid that nourishes as well as transports sperm (seminal fluid).
What exactly is sperm?Semen is the thick fluid which it emerges from men's. It transports sperm from a man's body so that it can fertilize an egg and generate an embryo (the first stage of pregnancy).
Is sperm as well as sperm the same thing?Sperm is a component of semen, however, semen is not a component of sperm. Semen, commonly known as ejaculate , has been the whitish fluid that usually, but not always, flows out of the that whenever a person comes.
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Three cells with generation times of 60 minutes are inoculated into a culture medium. Assuming no lag phase takes place, how many cells are there after 5 hours?.
There are 96 cells are there after 5 hours.
The lag period is the adaptation period during which bacteria adapt to new conditions. The length of the induction period varies greatly depending on the conditions under which the bacteria were generated and the conditions different from the state of the bacterial cell itself.
The number of bacteria in the culture increases according to the law of exponential growth. 100 bacteria in 3 hours, 800 bacteria in 6 hours. The lag phase is one of the earliest stages of the bacterial growth cycle. At this stage, bacteria tend to adapt to growth conditions. Here individual bacteria mature but do not yet divide. Enzymes, RNA, and various molecules are synthesized during this stage of the growth cycle.
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Explain TWO reasons why some countries are against reducing the carbon dioxide emissions by their industries.
When the simple squamous lines the cardiovascular and lymphatic system, it is called:_________
When the simple squamous lines the cardiovascular and lymphatic system, it is called endothelium.
While epithelial cells line outer surfaces, endothelial cells line inner surfaces. Simple squamous endothelial are flat cells that line the inner surfaces of the heart, blood vessels and lymphatic system. They are continuous and form a barrier between the circulating blood or lymph and the walls of the vessels.
There are two types of endothelial cells - Vascular endothelial cells and Lymphatic endothelial cells. The vascular endothelial cells are constantly in contact with blood and line the inner surfaces of blood vessels, from the heart all the way to the tiniest capillary. Lymphatic endothelial cells can be found in the lymphatic system.
In the glomerulus of the kidney, endothelial cells are responsible for fluid filtration. They also help in blood clotting and formation of new blood vessels.
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What causes competition between two species? select the two answers that are correct.
Explanation:
simple explanation:
there are many things that animals or plants compete for:
animals:
mates-some animals my be desperate to pass on their genes to offsprings. also if there is a decrease of one sex of an species the other may find it difficult to find a mate and can end up fighting their counterparts
territory -lack of territory also causes competition
food -lack of food can cause competition
Plants:
space: some trees 'want' or require a large amount of space to survive because they are bigger and my want to collect more nutrients form soil and take more light
light/sunlight: plants require sunlight for : plants photosynthesis they may grow their leaves big for a big surface area to collect more light.
water/minerals in soil: plants need water to grow so they may grow their roots deep and long
The two causes of competition between two species are the habitat has only a limited quantity of resource both species need and the species do not have a way to partition a resource they both need. Thus, the correct options are c and d.
What is Competition between species?
Competition is a type of interaction between species which occurs when the two species require same resource that is available in limited amount. So, the availability of the resource to one species is negatively influenced by the presence of the other species which leads to competition and exclusion of one species from the environment.
Competition between two species occurs when both the species are using the same resources in an area. Competition is of two types interspecific and intraspecific competition. In competition, the species do not have a way to partition the resource they both need.
Therefore, the correct options are c and d.
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Your question is incomplete, most probably the complete question is:
What causes competition between two species? select the two answers that are correct.
a. One species successfully prevents another species from using a resource
b. Their environment lacks a resource that one of the species requires
c. Their habitat has only a limited quantity of resource both species need
d. The two species do not have a way to partition a resource they both need
e. Males of the two species compete for mates belonging to the other species
