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.
Brainstorm ideas for ways people could use sunflowers to reduce soil contamination by heavy metals?
I need help
Answer:
Seeds are being delivered to every mailbox in town, all in hopes of purifying the soil using a technique called phytoremediation.Sunflowers can absorb many different toxins and chemicals from the soil and then store those chemicals at the cellular level. Once they're absorbed, they won't leach back out again.
In clover plants, the pattern on the leaves is determined by a single gene with multiple alleles that are related in a dominance series. The gene is not pleiotropic. Seven different alleles of this gene are known; an allele that determines the absence of a pattern is recessive to the other six alleles, each of which produces a different pattern All heterozygous combinations of alleles show complete dominance
a. How many different kinds of leaf patterns (including the absence of a pattern) are possible in a population of clover plants in which all seven alleles are represented? phenotype that could be represented by only a single genotype? you can identify a few plants representative of all possible pattern types. Explain this finding.
b. What is the largest number of different genotypes that could be associated with any one phenotype? Is there any
c. In a particular field, you find that the large majority of clover plants lack a pattern on their leaves, even though you can identify a few plants representative of all possible pattern types.explain this finding
Answer:
The correct answer is -
a. 7
b. 7 (p1p1, p1p2, p1p3, p1p4, p1p5, etc
c. p7 is abundant
Explanation:
According the question the dominance of the big leaves is p7 > p6 >p5 >p4 >p3 >p2 >p1 where 1 represent least dominance and 7 represent most dominance
let represent the phenotype with the numbers 1 to 7 and genotype with a combination of these numbers so the genotype in respect of phenotype would be :
p7p7,p7p6, p7p5, p7p4, p7p3, p7p2, p7p1 - most dominant 7
p6p6, p6p5, p6p4, p6p3, p6p2, p6p1 - 6
p5p5, p5p4, p5p3, p5p2, p5p1 - 5
p4p4, p4p3, p4p2, p4p1 - 4
p3p3, p3p2, p3p1 - 3
p2p2, p2p1 - 2
p1p1- 1 least dominant
Thus, there are 28 different combinations or patterns of genotypes. 7 phenotypes patterns.
What is the major factor that determines
the distribution of biomes on the planet?
Answer:
Mainly the terrestrial biomes are determined by temperature and precipitation of the localities.These factors determine the climate and finally the growing season, biodiversity, soil qualities, etc.
Explanation:
Please mark me as brainliest please
Which of the following forests contains 50% of terrestrial plants and animal species?
Answer:
This question lacks options, they are:
a)Cold forest
b)Tropical forest
c)Temperate forest
d)Cloud forest
e)Alpine forest
The answer is B. Tropical forest
Explanation:
Tropical forest is one of the forests found in nature. The tropical forest receives the best environmental conditions in terms of vegetation growth. Hence, it is said to contain the most diverse organisms in nature. This means that tropical forests holds more species of terrestrial organisms than any other forest or biome.
Therefore, tropical forests are believed to contain 50% of the Earth's terrestrial plants and animal species due to their biodiversity richness.
Practically speaking, how would you determine that Na + influx into a cell underlies the early current? Group of answer choices Remove Na + from the extracellular compartment and assess the early current under new conditions. Use the voltage clamp method to measure the current. Remove K + from the intracellular compartment and assess the early current under the new conditions. Treat the cell with tetraethylammonium. Replace intracellular Na + with its radioactive form and trace its movement across the membrane.
Answer:
Remove Na + from the extracellular compartment and assess the early current under new conditions
Explanation:
Na+ is a critical ion that influences the action potential in nerve cells. During the transmission of an impulse, the cell membrane is open so ions can flow through it, i.e., positively charged ions such as sodium ions (Na +) move within the cell, while negatively charged ions move outside the cell. This process produces a change in the action potential by rapidly increasing the positive charge in the nerve fiber, being thus the impulse propagated when this charge reaches +40 mv. In consequence, the effects of Na + on the single-channel current can be analyzed by removing positive ions and determining the change in the reversal potential of this channel.
If the amoeba is being viewed with a low power microscope with a 4.5 mm field of view, what is the estimated longest length of the organism? Show your work.
Answer:
sorry me not know
Explanation:
You are studying a variety of pea plant that has either red flowers or white flowers. When you cross true-breeding red-flowering plants with true-breeding white-flowering plants, you get all red-flowering plants in the F1 generation. If you then allow the F1 plants to self-ferilize, you observe that 75% of the F2 plants are red-flowering plants, while 25% of the F2 plants are white-flowering plants. Next you make 640 different monohybrid crosses and decide to analyze only the first 8 plants produced from each of these crosses (i.e. a total of 5120 progeny plants total). How many of these crosses would be expected to produce 6 red plants and 2 white plants?
Answer:
199 or 200
Explanation:
The computation of the number of these crosses is shown below:
P (red) = 75% = a
P (white) = 25% = b
Now determine the probability of 6 red + 2 white and then multiplied it by 640
Now use the binomial theorem
now the required probability is
= 28 × (0.75)^6 × (0.25)^2 × 640
= 199.25
= 199 or 200
hence, the number of corsses is 200
What do scientists call all of the compounds that contain carbon and are found in living things? O organic O inorganic O acidic O nonacidic
Answer:
A - Organic.
Which is an example of obstinate behavior?
Carmen plays her favorite video game over and over.
Carmen refuses again and again to clean her room.
Carmen takes the same route to school every morning.
Carmen leaves the pantry doors open when she fixes her breakfast.
Answer: B. Carmen refuses again and again to clean her room. Obstinate means to refuse to change your opinion, and REFUSING to clean your room seems to fit that description, keyword being refuse.
In pea plants, flower color is controlled by a pair of alleles where purple (P) is dominant to white (p). Stem length is controlled by another pair of alleles where tall (T) is dominant to short (t). These two allele pairs segregate independently. Suppose you have a pea plant that has purple flowers and tall stems and you wish to carry out a testcross in order to determine its genotype. Complete the predictions using the correct terms.
Complete question:
In pea plants, flower color is controlled by a pair of alleles where purple (P) is dominant to white (p). Stem length is controlled by another pair of alleles where tall (T) is dominant to short (t). These two allele pairs segregate independently. Suppose you have a pea plant that has purple flowers and tall stems and you wish to carry out a testcross in order to determine its genotype. Complete the predictions using the correct terms.
1. In order to carry out the testcross, you should cross your original pea plant with another pea plant whose phenotype is -------
2. If you examine 100 F₁ plants from the testcross and find that they all have purple flowers with tall stems, you should conclude that the genotype of your original pea plant is -------
3. If you examine 100 F₁ plants from the testcross and find that 44 have purple flowers with tall stems and 56 have purple flowers with short stems, you should conclude that the genotype of your original pea plant is -------
4. If you examine 100 F₁ plants from the testcross and find that 53 have purple flowers with tall stems and 47 have white flowers with tall stems, you should conclude that the genotype of your original pea plant is -------
5. If you examine 100 F₁ plants from the testcross and find that 23 have purple flowers with tall stems, 26 have white flowers and tall stems, 24 have purple flowers with short stems, and 27 have white flowers with short stems, you should conclude that the genotype of your original pea plant is --
Note: You will find the complete answer and explanation in the attached file "peaplants1" due to technical problems.
_____states that each rock layer isolder than the one above it.
Answer:
sup
Explanation:
sup
I
1
2.
по-
TO
1
2 - 3
5 16
III
1
2
3
4
5
6
IV
1
What is the relationship between l-1 and lll-3
Answer:
um
Explanation:
Help right answer please!!What does the genotype for a trait BB represent?
Each letter represents the dominant allele inherited from each parent.
Both letters represent the dominant allele inherited from the mother.
Both letters represent the recessive allele inherited from the father.
Each letter represents the recessive allele inherited from each parent.
Answer:
Each letter represents the dominant allele inherited from each parent.
why is water important in biological systems
Answer:
keeps us hydrated, helps in digestion
Which of the following statements about chemical reactions is false?
O Chemical reactions result in the formation of new elements not previously in the reaction mixture.
O Chemical reactions in biological systems are accelerated by enzymes.
O Products of chemical reactions can have very different properties than the reactants.
O Chemical reactions involve changes in bonds between atoms.
Answer:
A is incorrect.
Explanation:
Enzymes speed up/assist in chemical reactions by DECREASING the activation energy needed for a reaction. This is what C is saying.
Which of the following has mechanical energy?
A. batteries
B. Berger bun
C. a streched band
D. visible light
please answer quick!!!!!!!!
Answer:
stretched band
Answer:
C. Stretched band i got it right on my test :)
Explanation:
Eukuaryotic cells are different from prokaryotic cells because eukaryotic cells
Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.
Hope this helps :)
Compare mitotic and post-mitotic cells (define, give example of each).
Answer:
Mitosis is a process where a single cell divides into two identical daughter cell.
EXAMPLE ----- the way the skin cells covering a child's body all multiple when they are growing.
A mature terminally differentiated (TD) cell no longer able to undergo mitosis is defined as post mitotic cells.
EXAMPLE-------- mature neurons and mature multiple cells.
HOW IT HELPS......
WILL GIVE BRAINLIST PLZ HELP
When the minerals within a rock dissolve in water, what happens to the mass of the rock?
A. The mass of the rock decreases because the minerals are now in the water
B. The mass of the rock increases because new compounds are created in the water.
C. The mass of the rock remains unchanged because the minerals disappear
Answer:
answer is a.the mass decrease
One trait a plant can have is either red leaves (R) or brown leaves (r). Another
trait is tall stems (T) or short stems (t). A plant used in a dihybrid cross has
the genotype RrTt. What is the phenotype of this plant?
Answer:
its phenotype will be such that:
·It will have red leaves
·and tall stem.
Explanation:
As red leaves R is dominent allele and tall stem T is also.So the red colour of leaves and tallness of stem will be the dominent traits.
When an atom takes on electrons, it will have which of the following?
a positive overall charge
a negative overall charge
a neutral charge
no charge
Answer:
it would have a positive charge
Explanation:
hope this helped
what sets of instructions in each human cell that determine inherited traits called?
Answer:
Genes carry the information that determines your traits (say: trates), which are features or characteristics that are passed on to you — or inherited — from your parents. Each cell in the human body contains about 25,000 to 35,000 genes.
Explanation:
Carries amino acids to the ribosome?
Explanation:
the answer is;
transfer RNA (tRNA)
How do objects get energy
Answer:
An object can convert it's potential energy into kinetic energy. For example see the below figure, where potential energy of water has been converted into kinetic energy. A moving body can transfer some of its energy to set another body into motion. ... So, object what you are speaking about is nothing but energy (mass).
Explanation:
Answer:
An object can convert it's potential energy into kinetic energy. For example see the below figure, where potential energy of water has been converted into kinetic energy. A moving body can transfer some of its energy to set another body into motion. ... So, object what you are speaking about is nothing but energy (mass).
Auntie Penuela has blood group B and has a daughter of blood O .she says a certain man called Caleb is the child's father .when tested his blood was found to be AB . could he be the child's father . explain your answer fully
✓
2.
Find the sum of 4.5 mm and 24.4 mm.
A. 6.9 mm
B. 28.9 mm
C. 30mm
D. 29 mm
Answer:
b. 28.9mm
Explanation:
I open and close so, that things can go in and out. Which organelle do I closely represent. Cell membrane, cell wall, chloroplast, large central vacuole
Coenzymes are organic molecules that help enzymes conduct their reactions.
And, our system can easily build them.
A. True
B. False
Answer:
false
Explanation:
What happens if your hypothesis is incorrect
Answer:
Your hypothesis will not always be right because it only comes true with a little information. If you are sure it is I recommend looking for more information. Your hypothesis may be incorrect but you might still find correct information later on in your search.
Explanation:
Hope this helped! I'm not really sure if this is true but this is just my opinion.
Describe how water forms hydrogen bonds and describe one specific
property of water that results from hydrogen bonds.
Water molecules forming hydrogen bonds with one another. The partial negative charge on the O of one molecule can form a hydrogen bond with the partial positive charge on the hydrogens of other molecules. Water molecules are also attracted to other polar molecules and to ions.
