The reagent that contains essential nutrients to support bacterial growth is b. Luria broth. Luria broth is a complex medium that contains all the necessary nutrients required for bacterial growth such as amino acids, vitamins, and sugars.
Luria broth, also known as LB or Lysogeny broth, is a nutritionally rich medium commonly used in laboratories for the cultivation of bacteria. It is widely used in microbiology for the cultivation of various bacterial strains. The other options, ice, broth water, and para-r plasmid solution do not contain the necessary nutrients for bacterial growth.
It provides essential nutrients, including a carbon source, nitrogen source, vitamins, and trace elements, which are necessary for bacterial growth and reproduction.
Therefore, Luria broth is the most suitable choice for bacterial culture and growth.
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2. Which hormone stimulates the removal of sugar from the blood?
a. Glucose
b. Insulin
c. Glycogen
d. Glucagon
Answer:
Glucagon
Explanation:
Glucagon works along with the hormone insulin to control blood sugar levels and keep them within set levels. Glucagon is released to stop blood sugar levels dropping too low (hypoglycaemia), while insulin is released to stop blood sugar levels rising too high (hyperglycaemia).
Which process requires ATP in order to release particles from a cell to maintain homeostasis?
Answer:
Active Transport uses energy (atp) to maintain homeostasis within cells. Organisms use energy contained in their cells to allow proteins to make channels in the membrane for transport.
Help me please, I’m confused
Answer:
Photosynthesis-
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities. Photosynthesis occurs in the chloroplast of a plant, which contains chlorophyll. In order for photosynthesis to take place, it needs to have water and carbon dioxide, the two very important raw materials necessary for this process. In the presence of carbon dioxide, such cells are able to convert this solar energy into energy-rich organic molecules, such as this energy-rich molecule known as glucose. Oxygen the by product of photosynthesis is inhaled by heterotrophs which aids in cellular respiration and other internal processes and then exhales carbon dioxide. ... In like manner, carbon dioxide passes from blood to the alveoli and exhaled after
Explanation:
Suppose that the same island experiences environmental
conditions that prevent the growth of large seeds. What do you think would happen to
the average size of finch beaks? Explain your reasoning.
Answer:
The size of finch's beak depends on the size of seeds.
Explanation:
The average size of finch beaks also changes because the size of finch beak changes according to the size of seed available. If the environment contains large sized seeds so the population of finch having small beak size increases due to food availability while on the other hand, if the region contains large sized seeds so the population of finch having big beak size increases so according to the size of seeds, the size of finch's beak also changes.
what products of glycolysis are used in celluar respration
Answer:During the process of glycolysis in cellular respiration, glucose is oxidized to carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP adenosine triphosphate.
Explanation:
How do you think genetics can be used to describe the real world?
Answer:
ke tlao oraba lata outlwa hlr ke busy
Answer:
Genetics are used in many aspects, such as identifying an individual and more. Genetics can also be used to find out if a couple's offspring will have offpsrings with disorders or diseases.
Explanation:
please help me
A new species can form when a group of individuals remains completely separated from the rest of its family long enough to evolve different traits that prevent reproduction. true or false
Answer:
True
Explanation:
It is true that a new species can form when a group of individuals remains completely separated from the rest of its family long enough to evolve different traits that prevent reproduction.
This happens due to physical separation of members of a population.
Geographic isolation :Geographic isolation occurs when populations are separated by geographical barriers like rivers, mountain etc.The population is separated from exchanging genetic material within the same species and results in evolution of a different trait.
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the ratio between mass and volume of mass per unit volume.
Solid
Volume
Mass
Density
What is Group 13 period 5 on the periodic table
Answer:
Boron is the fifth element of the periodic table (Z=5), located in Group 13. It is classified as a metalloid due it its properties that reflect a combination of both metals and nonmetals. Aluminum (also called Aluminium) is the third most abundant element in the earth's crust.
What is science????
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can anyone explain me the Transpiration Pull in plants?
Answer:
As the water is lost from the leaf surface by transpiration, more water molecules are pulled up due to the tendency of water molecules to remain joined (cohesion), and thus to produce a continuous column of water through the stem is called transpiration pull.
Explanation:
Mitosis vs Meiosis, someone help me with this, ill give brainiest.
Mitosis gives two nuclei, and hence two cells while meiosis gives four.
2. CellsMitosis gives identical cells to each other and to the mother cell while meiosis leads to genetic variation due to crossing over and independent assortment.
3.DivisionMitosis includes one division while meiosis includes two.
4. Crossing overIt takes place in Meiosis while absence in Mitosis.
5. ChromosomesMitosis produces diploid cells (46 chromosomes) whereas meiosis produces haploid cells (23 chromosomes)
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In which of the following would competition not occur?
A Rabbits grazing in a field
B Owls and foxes hunting for mice
с Daisies and dandelions growing in a lawn
D Algae and fish in a loch
4.Paramecium is able to move by hairlike structures called
____
Answer:
Cilia
Explanation:
Brady took a cutting from a sweet potato vine in his family garden and placed the vine in a small vase filled with water. After about a week, tiny roots had begun to grow. What is this an example of
Answer:This is an example of asexual reproduction.
Explanation:
Reproduction is defined as the ability of living organisms to produce offspring, that is, new individuals of their type. Living organisms have developed many methods of reproducing. These can be either ASEXUAL or SEXUAL.
Asexual reproduction: In asexual reproduction, an individual produces an offspring by itself, that is, only one parent is present. This type of reproduction is common among flowering plants. Examples of asexual reproduction includes:
--> Fission
--> Budding
--> Spore formation
--> Fragmentation and
--> Vegetative propagation.
The sweet potato vine is reproduced by an asexual means known as vegetative propagation. Here, a new plant grows from any portion of an old one other than the seeds. When stem cutting are taken from the vine, new storage roots are formed within few days.
Brady took a cutting from a sweet potato vine in his family garden and placed the vine in a small vase filled with water. After about a week, tiny roots had begun to grow which is an example of - Asexual reproduction.
Asexual reproductionis a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes.Examples of asexual reproduction include: Fission Budding Spore formation Fragmentation and Vegetative propagation.In the given scenario sweet potato is cultivated by vegetative propagation.Brady takes stem cuttings from the vines, which then root and form new storage roots.Sweet potatoes are relatively easy to propagate by rooting vine cuttings directly in the ground or in a well-drained rooting mediaThus, The given case shows an example of - asexual reproductions.
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Pls it’s a drag and drop
Answer:
Explanation:
photosynthesis =
uses carbon+water
requires chlorophyll
produces food for the plant
converts food to usable energy
Respiration=
uses oxygen
releases carbon into the air
Transpiration= pulls water up from the roots to the leaves
important part of the water cycle
returns water to the air
Another name for the cells in plants and animals is
sentence?
cells
Answer:
Eukaryotic Cells
Explanation:
Eukaryotes are plants and Animal cells.
Another name for the cells in plants and animals is eukaryotic cells.
Name one organism that produces glucose through the process of chemosynthesis. Explain why it cannot produce glucose using photosynthesis.
Answer:
During chemosynthesis, bacteria living on the sea floor or within animals use energy stored in the chemical bonds of hydrogen sulfide and methane to make glucose from water and carbon dioxide (dissolved in sea water). Pure sulfur and sulfur compounds are produced as by-products.
Explanation:
Answer:
During chemosynthesis, bacteria living on the sea floor or within animals use energy stored in the chemical bonds of hydrogen sulfide and methane to make glucose from water and carbon dioxide (dissolved in sea water). Pure sulfur and sulfur compounds are produced as by-products.
Explanation:
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Class
Lesson Uutine
Levels of Organization
A Lite's Organisation
1. A large animal is composed of trillions of tiny
together
organisms are made of only one cell.
working
Answer:Life's Organization. 1. A large animal is composed of trillions of tiny cells working together. 2. Unicellular organisms are made of only one cell. B.
Explanation:
A concentration gradient exists when one area has a higher concentration of a substance than another area does.
True or false.
Answer: True
Explanation:
Answer:
true
Explanation:
John Ray introduced a new method of grouping by similarities in appearance.
True
False
Answer:
true
Explanation:
I AM LITERALLY CRYING RIGHT NOW PLEASEE HELPPP WILL MARK BRANLIEST HELPPP MEE
Part 1: Explore
Based on your research and observations of the three common states of matter, answer the
following questions.
Out of the videos, animations, and images you researched, which was your favorite? Why?
Do you feel it accurately represented the differences between each state of matter
How does the space between the particles in each state of matter differ?
How do the particles in each state of matter move?
Part 2: Explain
Examine the heating curve of water below, and then answer the questions about it. If you require the use of a text reader, open the file Heating Curve of Water to receive the information.
Which three parts of the graph’s curve represent the solid, liquid, and gaseous state of water?
Explain your reasoning.
Which point of the graph’s curve represents the melting point of water? Explain your reasoning.
Which point of the graph’s curve represents the boiling point of water? Explain your reasoning.
What happens to the energy of water in Part B and Part D of the graph’s curve? How do you know?
Why does the temperature of the water stay the same when it melts and boils?
Now comes the hands-on part of your project! You will continue to explore phase changes by performing an experiment and creating your own heating curve. Before you begin your experiment, read over the following information.
The materials you will need for your experiment are listed below.
small pot
measuring cup (must have mL and oz markings)
spoon (wooden, plastic, or metal)
ice
water
stove
thermometer (should have units in °C
Time (min) Temperature of Water (°C) Observations of Water
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Place 14 oz of crushed ice into a small pot. Then add about 125 mL of water to it.
Using the thermometer, measure and record the initial temperature of the ice water. List this temperature in °C in the “0” minutes row of your data table in the lab handout. *Do not allow the thermometer to touch the bottom of the pot when recording measurements.
Place the pot on the stove, and turn the knob to the medium-low setting.
Using the thermometer, measure the temperature every minute until the water begins to boil vigorously. Record this data in the table on your lab handout.
At each measurement, also record what is happening to the water. Be sure to record the times of these events:
The ice melts.
The water forms steam.
The water begins to boil.
Once the water has begun to boil, stir the water constantly with the spoon.
Continue to measure and record the temperature every minute until almost all the water has boiled and the pot is close to empty.
Record the last temperature, and turn off the stove. DO NOT TOUCH THE POT WITHOUT SAFETY EQUIPMENT.
Create the x-axis and y-axis of a graph.
Label the x-axis as follows: Time (min).
Label the y-axis as follows: Temperature of Water (°C).
Along the x-axis, create and label 15 marks, one for each minute of the experiment. (Hint: The origin starts at 0.)
Along the y-axis, create and label temperature markings for every 20 degrees. (Hint: The origin starts at 0.)
Refer to the data from your experiment to plot the points on your graph. Then connect each of the data points with a line.
Look over your graph to make sure it is clear and correctly labeled.
Either save your graph as a computer file, or take a picture of your graph and upload it as a file on your computer.
Describe your experience in performing the experiment. What went well? What could have been
improved?
Examine your line graph. How does the graph’s slope change over time?
Examine your line graph. Why does the slope change?
How could you apply the knowledge gained from this experiment in the real world?
Hint: Think of cooking.
Make a prediction. How do you think adding other substances to the water would affect its
heating curve?
THANK YOU SO MUCH
Answer:
think of cooking
Explanation:
the reason is that I just know it
What needs to happen FIRST for a fossil to form?
Answer:
for a fossil to form, an organism must be buried quickly so that any oxygen is cut off and its decay slows down or stops. ... Fossil formation begins when an organism or part of an organism falls into soft sediment, such as mud.
Explanation:
For a fossil to be formed, it is required for a plant or an animal to be covered by the sediment. Thus, the correct option is D.
What is the process of fossil formation?Fossils are the preserved evidence of the organisms which were present on this planet once. There are four types of process which contribute to the formation of a fossil. These are mineralization, carbonization, encrustation and distillation. These processes occur once a living organism has become trapped within the surrounding sediment, and it is primarily depend upon the mineral composition of silt and water available.
Fossil formation begins when a living organism or any part of an organism falls into the soft sediment, such as mud. The organism or part of it then gets quickly buried by more sediment. As more and more sediment collects on top of the organism, the layer with the organism or part becomes compacted and it undergoes deep into the Earth.
Therefore, the correct option is D.
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Design your own scenario related to Bacteria or Viruses. Identify the independent and dependent variables.
Answer:
An experiment where an antibiotic is tested against bacteria. The antibiotic can vary in its concentration for example, different amounts are applied to a sample of bacteria to see if it is affected by the action of the antibiotic and if so, in what concentration. So, the independent variable is the concentration of antibiotic while the dependent variable is the survival (or not) of the bacteria.
Explanation:
An independent variable is a variable that represents a quantity that the scientist modifies in an experiment. A dependent variable represents a quantity whose value depends on how the independent variable is modified. This is the variable being studied and measured.
So, an example of this applied to bacteria or viruses could be:
An experiment where an antibiotic is tested against bacteria. The antibiotic can vary in its concentration, different amounts are applied to a sample of bacteria to see if it is affected by the action of the antibiotic and if so, in what concentration. So, the independent variable is the concentration of antibiotic while the dependent variable is the survival (or not) of the bacteria.
To complete the experiment, an antibiotic whose effect is already known can be used as a positive control. That is, it is already known to kill the bacteria. And as a negative control you can simply use water, which has no effect and is known not to kill the bacteria. In this way, we validate the results and make sure that there is not something else that is affecting the bacteria and that only the antibiotic being studied has an influence.
What layer of the Earth does the upper surface of the cross-section represent? Group of answer choices Inner Core Outer Core Mantle Crust
Answer:
Hello! Your answer is...
The lithosphere is the rocky outer part of the Earth. It is made up of the brittle crust and the top part of the upper mantle. The lithosphere is the coolest and most rigid part of the Earth. The crust is the layer that you live in. The Outer and Inner Cores are hotter. The temperatures of the crust vary from air temperature on top to about 1600. The asthenosphere is the part of the mantle that flows and moves the plates of the Earth.
Explanation:
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The crust of the Earth, the uppermost layer visible in a cross-section of the planet, is halfway through at this point. The crust, which only accounts for around 1% of the Earth's total volume, is made up of igneous, metamorphic, and sedimentary rocks.
What is the upper surface of the cross-section of Earth?The rocky exterior of the Earth is known as the lithosphere. It is composed of the uppermost layer of the upper mantle and the brittle crust. You live in the crust of the earth. It is hotter in the outer and inner cores.
The crust varies in temperature from the top air temperature to roughly 1600. The Earth's tectonic plates are moved by the asthenosphere, a region of the mantle.
Therefore, Mantle Crust layer of the Earth does the upper surface of the cross-section represent.
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The photograph shows solid waste pollution.
Which human lifestyle factors led to this situation? Select the three correct
responses. i’m
Answer:
A. People make things to earn a living
B. People want to buy things
D. People produce waste
Explanation:
DNA carries the information needed to make proteins. How is this information used to make proteins?
Answer:
The information contained in DNA is expressed giving rise to proteins, through transcription processes, a step by which the information is transferred to a messenger RNA molecule (m-RNA) and, through the process of translation, the message carried by m-RNA is translated into protein.
Answer:
DNA is transcribed into mRNA. Ribosomes "read" the mRNA and translate each group of three nucleotides into amino acids to build proteins, with the help of tRNA.
Explanation:
Examining different cells such as the plants, animal, and fungus cells. Identify the different organelles found in different cells and list the organelles and structures the characterize each of them.
Answer: Organelle is a sub-unit of cell and it is involved in performing specialized function within the cell. The type of organelles vary from organisms to organisms.
Explanation:
1. Centrioles are the cell organelles in which the spindle fibers are organized to which the chromosomes attach and mitotic division takes place. These are present only in animals and they are absent in plant and fungal cells.
2. Vacuoles are the storage organelles which store excess water, waste metabolites, sugars and other components in them. In plant cells they are of larger size whereas the vacuoles are small in size in case of the animal and fungal cells.
3. The plants cells and fungal cells have cell wall made up of cellulose (plants) and chitin (fungus) respectively. The cell wall is absent in animal cells.
4. The plant cells and fungal cells do not possess cilia and flagella for locomotion whereas animal cells have cilia and flagella.
NADP+ is an example of an electron carrier. Describe its function in photosynthesis.
Answer:
Its ferment oxidant-renewal of bio-reactions at cells.
Use the information to answer the following question.
A population of rabbits lives in a grassy field that is lush and green in summer and covered in snow in winter. At the start of the summer,
75% of the population are white rabbits, and the remaining 25% of the population are brown rabbits. In rabbits, white (W) is dominant
over brown (w). During the summerthe field where they live experiences a drought. The
summer drought lasts for two years, through
many generations of rabbits.
Which prediction BEST estimates the expected percent of white and brown rabbits in the population at the end of the
drought?
O A. The rabbit population will consist of 0% white rabbits and 100% brown rabbits.
OB. The rabbit population will consist of 35% white rabbits and 65% brown rabbits.
C. The rabbit population will consist of 95% white rabbits and 5% brown rabbits.
D. The rabbit population will consist of 80% white rabbits and 20% brown rabbits.
Answer:B
Explanation:
The rabbit population will consist of 35% white rabbits and 65% brown rabbits. Therefore, option B is correct.
What are the limiting factors of the rabbit population?Until a limiting factor, such as low reproduction, food scarcity, predation, disease, and/or weather conditions restrict populations, the population tends to grow.
Some density-dependent limiting factors are the spread of pathogens, competition for nesting locations, the destruction of habitat, increase in the population of predators. Several predators, including raptors and coyotes, use rabbits as food, but in urban and suburban areas, cats and dogs pose the biggest threat. Some abiotic limiting factors are drought, flood, earthquake, and all types of natural disasters.
The rabbit population will consist of 35% white rabbits and 65% brown rabbits. Therefore, option B is correct.
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