Agar is an excellent solidifying agent for microbiological media because Select one: a. it is not degraded by most microorganisms. b. solid agar remains solid until the temperature is raised to 90°C, and liquid agar remains liquid if the temperature is lowered to 45°C. c. it is not degraded by most microorganisms and solid agar remains solid until the temperature is raised to 90°C, and liquid agar remains liquid if the temperature is lowered to 45°C are correct. d. agar provides an excellent source of nutrition for a variety of different microorganisms.
The correct answer is C. It is not degraded by most microorganisms and solid agar remains solid until the temperature is raised to 90°C, and liquid agar remains liquid if the temperature is lowered to 45°C are correct.
Explanation:
Agar is a substance derived from red algae mainly used as part of some foods and microbiology works. In microbiology, agar is an ideal substance due to its stability and low susceptibility to temperature. Indeed, agar will remain solid below 90° C and liquid below 45°.
Moreover, agar is used in microbiology because this substance cannot be degraded by most microorganisms. Due to this, it is commonly used as a culture medium that will preserve stable properties as it is not affected by the bacteria, and other organisms growing in it. According to this, the correct answer is C.
What is the basic unit of structure and function of all living organisms?
Answer:
While all of the individual characteristics of carnivorous plants can be found in other plants, when they are all combined in the same plant the organism is truly unique, a carnivorous plant whose modified leaves can trap and digest prey lured to the plant. The digested materials are utilized by the plant for its growth and development
Explanation:
which organelles are needed to bring in or move out materials from the cell
Answer:
Molecules can diffuse across membranes via transport proteins, or they can be aided in active transport by other proteins. Organelles such as the endoplasmic reticulum, Golgi apparatus, mitochondria and peroxisomes all play a role in membrane transport.
Which of the following statements is true?
O Cold blooded animals have cold blood.
Cold-blooded animals change their body temperature to match the environment.
Mammals and birds are usually cold blooded.
All of the above.
Answer:
Explanation:
Cold blooded animal did not have cold blood.
Cold blooded animals can’t change their body temperature to match the environment.
Mammals and birds are not cold blooded.
10)
Tom and Jesse decided to perform an experiment to see what exercise does to blood pressure. They decided to test their friend John. Below is their procedure.
1. Take test subject's resting blood pressure.
2. Have test subject do either sit ups, push ups, or sprint for one minute.
3. Take test subject's blood pressure.
Tom and Jesse run the same tests on John every day for one week. Running the same test, for one week, is an example of
Answer:
The correct answer is repetition.
Explanation:
When the same test is run for multiple times and have multiple trails is repeated at least three times for a longer period like one week, this is known as repetition.
At the time of an experiment or investigation in a scientific setting and if there are various sets of measurements are performed again and again. Tom and Jesse performing tests is an example of repetition.
Thus, the correct answer is repetition.
Alcoholic fermentation
forms fewer ATP molecules than cellular respiration
uses oxygen and ATP molecules as reactants
occurs in the muscle cells of animals and humans
gives off carbon dioxide and NADH as products
forms fewer ATP molecules than cellular respiration
A chemical reaction occurs. Which of the following would indicate that energy is transformed during the reaction? A. light is produced B. heat is produced C. an electrical charge is produced D. all of these
Answer:
i think its B.
B.B.B..B.B.B.B.B.B.B.B.
Answer:
D, All of the above
Explanation:
Colier inside zip Colored outside zip Volume of Volume of
before after marker (before) mrker (after)
Explain why the differences in time for coffee and food coloring to make the whole glass colored. Was diffusion, osmosis or both observed in this experiment?
1. Pour half a cup of balsamic vinegar (dark) and halfa cup of water inside a glass.
2. Mix the contents well with a whisker.
3. Record what you see.
4. Add half a cup vegetable cooking oil.
5. Mix the contents well with a whisker.
6. Record what you see.
7. Using a teaspoon of your dish detergent. Mix the contents well with a whisker.
8. Record what you see.
1. Results: In each empty box, record what you see after you have added that reagent.
Water + Balsamic Vegetable Detergent
vinegar
2. What was the purpose of adding the detergent?
Post-lab questions
1. Define polarity.
2. A membrane that allows certain molecules to pass through but not others is known as what kind of a membrane?
3. You have a membrane that is permeable to potassium ions and water. The membrane is not permeable to sodium ions. The concentrations are listed below for each molecule on either side of the membrane. Explain the net movement for EACH molecule.
Molecule Outside of the Membrane Inside of the Mehrane
Palaniam lens
Answer:
Diffusion
Explanation:
Diffusion can be explained or described as the movement of molecules from the region of higher concentration to the region of lower concentration.
It should be understood that this process is different from osmosis in that, osmosis requires a semi permeable membrane while diffusion does not.
In this sense, diffusion is considered to have occurred in both the activities.
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Question 20
1 pts
Mistletoe is a plant that grows on other plants. Its root-like structure reaches into the plants
and draws out water and nutrients. What is the mistletoe's role in this relationship?
O host
predator
parasite
prey
The mistletoe's role in this relationship is a parasite. The correct option is C, parasite.
Mistletoe is a parasitic plant that grows on other plants, typically trees and obtains water and nutrients from its host plant.
What is a parasitic relationship?
A parasitic relationship is a type of relationship between two organisms where one organism, known as the parasite, benefits at the expense of the other organism, known as the host.
The parasite obtains various resources such as nutrients, water, shelter, or even a place to reproduce from the host organism.
The root-like structures of mistletoe, called haustoria, penetrate the host plant's tissues and extract water, minerals, and sugars.
This relationship is considered parasitic because mistletoe benefits at the expense of the host plant, potentially causing harm or weakening the host's health.
Therefore, the correct option is C.
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Mistletoe is a plant that grows on other plants. Its root-like structure reaches into the plants and draws out water and nutrients. What is the mistletoe's role in this relationship?
A. host
B. predator
C. parasite
D. prey
Which of these is more likely to have winter ice?
A)
lakes
B)
open ocean
C)
salt marsh
D)
mangrove forest
E)
estuary
Answer:
A. Lakes
Explanation:
Usually the open ocean has too much movement and higher temperatures to freeze over, so that excludes salt marches and estuary as well. Mangrove forests usually survive in salt water areas, which again the salt and movement of salt water allows for the water to not freeze over. With lakes, they are usually smaller bodies of water found all over the world, and can easily have the top freeze over, since there's no salt, not as much movement, and temperatures can vary more often.
A region has a high pressure system, and then a low pressure system moves
in. What is the best prediction about the weather from this information?
A. Cold
B. Clear
C. Stormy
D. Hot
APEX
Answer:
A
Explanation:
B Is the high pressure system and low is only predominant in cold regions
Answer:
actually the answer is clear
Explanation:
A researcher analyzes the interaction between two investigational drugs. He begins by plotting the dose–response curve for the first drug, administered alone. He then administers both drugs in combination and plots a second dose–response curve. When the two drugs are co-administered, the dose–response curve is shifted significantly to the right. He concludes, therefore, that the interaction between the two drugs is:__________
Answer: antagonistic
Explanation:
A researcher analyzes the interaction between two investigational drugs. He begins by plotting the dose–response curve for the first drug, administered alone. He then administers both drugs in combination and plots a second dose–response curve. When the two drugs are co-administered, the dose–response curve is shifted significantly to the right. He concludes, therefore, that the interaction between the two drugs is antagonistic.
An antagonist is sometimes called blockers and it is simply referred to as a type of drug that avoids a biological reaction. An antagonist doesn't activate when it binds to the receptor but what it does is that it blocks the receptor. From the question, we are told that when the two drugs are co-administered, the dose–response curve is shifted significantly to the right, this implies that the interaction is antagonistic.
How is gastric acid produced?
Answer:
Gastric acid secretion is produced in several steps. Chloride and hydrogen ions are secreted separately from the cytoplasm of parietal cells and mixed in the canaliculi. Gastric acid is then secreted into the lumen of the gastric gland and gradually reaches the main stomach lumen.
basically in the stomach
Answer:
Gastric acid is produced in many steps. Chloride and Hydrogen are secreted separately from the cytoplasm of parietal cells and mixed in the canaliculi and, Gastric acid is then secreted into the lumen of the gastric gland and gradually reaches the main stomach lumen.
What is true about the structure or function of the plasma membrane? The bilayer structure forms a solid boundary that separates the cell from its environment. Hydrophobic molecules keep the cell from getting too much water. It is made entirely of integral proteins. Large molecules often cross the plasma membrane while inside vesicles.
Answer:Large molecules often cross the plasma membrane while inside vesicles.
Explanation:hope this helps!! :)
Answer:
Large molecules often cross the plasma membrane while inside vesicles.
Explanation:
i took test
What are two advantages to putting data in some type of table? Explain your answer
Answer:
A table facilitates representation of even large amounts of data in an attractive, easy to read and organized manner. The data is organized in rows and columns. This is one of the most widely used forms of presentation of data since data tables are easy to construct and read.
Coal, oil and natural gas
All of the following are considered phases of mitosis (active cell division) EXCEPT:
interphase
prophase
metaphase
anaphase
telophase
Answer: interphase
Explanation:
During interphase, the cell grows and makes a copy of its DNA. It isnt dividing.
During the mitosis, the cell separates its DNA into two sets and divides its cytoplasm, forming two new cells.
Which of the following would be an example of the process taking place at B? Four roles of plasma membrane proteins. Which of the following would be an example of the process taking place at B? Four roles of plasma membrane proteins. the transport of a specific chemical messenger into the cell the conversion of a chemical messenger molecule into a specific product the movement of a specific protein from the membrane to the cytoplasm the binding of a chemical messenger activating a cytoplasmic enzyme, such as kinase, that leads to specific cellular responses
Answer:
the binding of a chemical messenger activating a cytoplasmic enzyme, such as kinase, that leads to specific cellular responses.
Explanation:
A living organism has several chemical messengers that are molecules capable of binding enzymes, adjusting their active site and activating them, allowing them to establish key-lock relationships with other molecules, catalyzing them and forming new biological products that will be used in the various metabolic reactions of the organism, leading to specific cellular responses.
Question 2
Which two of the following processes require energy
Answer:
what are the options
i would love to helps tho
Explanation:
sorry
Answer:
Exocytosis
Endocytosis
g The ultimate significance of the fact that artificial selection often leads to change in the tested population is that it a. shows that most animal species have a long way to go in reaching their full evolutionary potential. b. demonstrates that genetic differences are often responsible for phenotypic differences among the members of a population. c. demonstrates that the environment has relatively little effect on the development of most behavioral attributes. d. shows that populations often possess the potential for evolutionary change in the present, and so they could have been evolving in the past.
Answer:
b. demonstrates that genetic differences are often responsible for phenotypic differences among the members of a population.
Explanation:
Artificial selection: In biology, the term "artificial selection" is also referred as "selective breeding" and is determined as a process whereby an individual uses plant breeding and animal breeding to create "phenotypic traits" selectively by choosing specific plant or animal females and males will ought to reproduce sexually and can produce offspring.
In the question above, the correct option is b.
Roger is comparing a model of a sugar molecule to a model of an amino acid.
Which of the following evidence statements would be supported by the two
models?
Sugars and amino acids are made of exactly the same elements.
O Sugars and amino acids have the same structure
Sugars and amino acids are made of the same elements except amino acids also
contain nitrogen
Sugars and amino acids are made of the same elements except sugars also contain
phosphorus
O
Answer:
a
Explanation:
because he is smart sjsjsjsuzzhss
Sugars and amino acids are the important biomolecules which make the genetic material of an organism. These are made up of same elements except amino acids also contain nitrogen in them. Thus, the correct option is C.
What are biomolecules?Biomolecules are the organic compounds which are important for the survival of an organism. Sugars and amino acids are the two important classes of biomolecules which carry the genetic information in them.
Sugars are the carbohydrates which contain carbon, hydrogen, and oxygen elements. These include ribose sugar and deoxyribose sugar which are the components of genetic material- DNA and RNA.
Amino acids are the amphoteric acids which contain both carboxylic acid group and amino group in them. Amino acids combine to form protein molecules. Amino acids are made up of carbon, hydrogen, oxygen, and nitrogen elements.
Therefore, the correct option is C.
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What male reproductive part includes the anther and the filament?
the stamen
the stigma
the ovule
o the petal
Answer:
The stamen
Explanation:
This image shows the ionic bond between sodium and chloride in NaCl (table salt), and the covalent bond between oxygen and hydrogen in H2O (water.) How are the bonds different?molecular structure
Question 3 options:
The hydrogen transfers its electrons to oxygen in water; sodium and chlorine in salt share their electrons.
The hydrogen and oxygen atoms in water share their electrons; sodium transfers an electron to chlorine in sodium chloride.
The oxygen transfers its electrons to hydrogen in water; sodium and chlorine in salt share their electrons.
Answer:
B. The hydrogen and oxygen atoms in water share their electrons; sodium transfers an electron to chlorine in sodium chloride.
Explanation:
The bonds between sodium and chloride in NaCl (table salt), and oxygen and hydrogen in water are different as sodium and chloride in NaCl have ionic bond and oxygen and hydrogen in water have the covalent bond.
Sodium transfers an electron to chlorine in sodium chloride (NaCl), so that they both have full outer shell and form ionic bonds. sodium and chloride ions exerts electrostatic force on each other and bond together with ionic bonds.
The hydrogen and oxygen atoms in water have covalent bonds because they are bonded by sharing electrons. Both hydrogen and oxygen atoms share unequal electrons with each other and form V-shaped water molecule.
Hence, the correct answer is "B."
What are signs you are going through a growth spurt? (male)
Answer:
signs that a male is going through a growth spurt are, he sleeps more than usual, and he is gaining weight.
Explanation:
Which is abiotic? A.tree sap B.insect C.sunlight D.tree stump
Answer:
The answer is C. sunlight
Explanation:
Answer:
C // Sunlight.
Explanation:
Sunlight is the proper answer to this question, as it is a non-living, and has no live factors. So, Sunlight would be abiotic.
In order for a plant to grow, what force must it overcome?
37. What is the distance from Passas Street at the
margin of the map to where it meets Route 84?
Answer:
3 1/2
Explanation:
The distance from Passes Street at the margin of the map to where it meets Route 84 is 3 1/2 miles.
What are measurements?The comparison of an unknown amount with a known quantity is referred to as measurement. The measurement yields a numerical value with specific units. Any given object's length, mass, capacity (volume), and temperature can be measured.
Distance is defined as an object's entire movement without regard for direction. The distance can be defined as how much ground an object has covered, regardless of its starting or ending place.
Mile, any of several distance units, such as the statute mile of 5,280 feet (1.609 km). It was derived from the Roman mille passus, or "thousand paces," which was equivalent to 5,000 Roman feet.
Therefore, the distance from Passes Street at the map's edge to where it intersects Route 84 is 3 1/2 miles.
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Question 6 (1 point)
When a disease is acute, what does this mean?
Answer:
When a disease is acute, it will be a short duration. It may be severe and impair normal functioning. They also come on rapidly, and are accompanied by distinct symptoms that require urgent or short-term care, and get better once they are treated.
hope this helps :)
What pattern did you see repeated every year?
Es una característica de la planaria excepto:
a) Es un gusano plano
b) Habita en los ríos
c) Es un parásito
d) Son pequeñas
e) Pertenece a los platelmintos
Answer:
The correct answer is option c) Es un parásito.
Explanation:
The planarians are a group of "flat worms" that previously corresponded to the class Turbellaria, which is why they are also called as peat bogs. Around 4500 species are known, most of them aquatic in benthic ecosystems, although there are also species adapted to humid environments on land.
The vast majority of planarians are free-living animals, unlike the rest of flatworms that are totally parasitic. Most are aquatic and live in the bottoms (benthos) feeding on other small animals or on remains of decomposing organic matter.
Todas estas son características de las planarias excepto son parásitos (Opción c).
Los planáridos (Planariidae) son una familia de gusanos planos del phylum Platyhelminthes.Estos gusanos planos (planarias) son de vida libre, contrariamente a otros platelmintos que son generalmente parásitos.No obstante, es importante aclarar que existen excepciones a la regla y algunas especies de planarias son parásitas de diferentes animales.Algunos géneros de planaria incluyen:
AtrioplanariaCrenobiaDigonoporusParaplanariaBdellasimilisPhagocataEn conclusión, todas estas son características de las planarias excepto son parásitos (Opción c).
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