Answer:
streak, pour
Explanation:
The streak method is the most popular technique used to isolate specific bacteria from a sample containing different microorganisms. In this technique, a sterile loop is employed to obtain an uncontaminated microbial culture. Colony picking refers to the process where colonies of pure bacteria are selected in order to duplicate them by transferring them into new agar plates. Moreover, the pour plate method is the most popular technique employed to count the number of colony-forming bacteria (i.e., bacteria/ml) in a specimen. The pour plate method consists of dropping the sample on a sterile plate and subsequently molten-cooled agar is then poured into the plate and mixed well with the inoculum.
Answer:
streak, pour
Explanation:
The streak plate method involves spreading an inoculum onto the surface of a plate in a pattern that results in isolated colonies in some areas of the plate after incubation, whereas the pour plate method involves diluting an inoculum into several melted agar tubes and then adding their contents into plates for solidification and incubation.
what is photosynthesis
Answer:
Photosynthesis is a process by which phototrophs convert light energy into chemical energy, which is later used to fuel cellular activities. The chemical energy is stored in the form of sugars, which are created from water and carbon dioxide.
Hey there!
Photosynthesis is the reaction that converts light energy to chemical energy in sugar and carbohydrates. Humans can't eat sunlight, so we eat plants. Plants convert the energy in the sunlight into chemical energy using chlorophyll. Chlorophyll is a molecule produced by plants, algae, and cyanobacteria, which aids in the conversion of light energy into chemical bonds. It is the green pigment found in the chloroplasts of higher plants. They are a part of our ecosystem, and they are lower on the food chain.
Hope this helps!
Have a great day! :)
Agriculture activities are precursors for environmental degradation without human and nation benefit discuss
Answer:
Yes.
Explanation:
Yes, Agriculture activities are precursors for environmental degradation without human and nation benefit because these activities are responsible for the soil degradation. If we skip the human and nation benefit from these agricultural activities, there is disadvantage of these activities which destruction of soil. The tillage practices loosen the soil that leads to the erosion of soil through wind.
Here is ANOTHER ACCOUNT! DO NOT CLICK ON LINKS LIKE THESE! THEY ARE NOT SAFE! SPREAD THE WORD!
Answer:
yea I know, I tell people not to click on them
Answer:
i also tell them to not click on it
Explanation:
PLZZ HELP ME THIS IS AN ASSIGMENT I WANT YOU TO DO IT IN YOUR OWN WORDS AND NO SCAMMED
1.)Skilled Scientist level from Rubric: Student used critical thinking skills and evidence to establish a possible relationship among organisms and a possible evolutionary history of traits.
How many different species are there?
2.) List the different genus groups:
3.) Explain in your own words the order in which the creatures’s traits may have evolved starting from the first likely trait. (HINT: Which trait is the most common across the creatures? Be sure you list ALL of the physical features from the key above from most common to least common)
Answer:^^^^
Explanation:
above me is correct!
Firefly luciferase is the light-emitting enzyme responsible for the bioluminescence of fireflies and some types of beetles. This process occurs in specialized light-emitting organs, usually on a firefly's lower abdomen. The enzyme catalyses the firefly chemical luciferin, by binding to it and spending up the chemical reaction that combines oxygen molecules to produce oxyluciferin. Besides, oxygen this requires ATP. Because of the requirement of ATP, firefly luciferases have been used extensively in biotechnology. How do the enzymes speed up the chemical reactions and produce bioluminescent light?
Answer:
Luciferase transforms luciferin into oxyluciferin while consuming ATP and O₂, and causes the emission of light.
luciferin + ATP + luciferase + O₂ → oxyluciferin + AMP + CO₂+ luciferase + light
Explanation:
Fireflies are organisms that emit cold light by the process of bioluminescence. It is a chemical reaction of male individuals to attract the females that also respond by emitting light.
Luciferin is the molecule responsible for light emission. The chemical reaction involves the luciferin molecule, ATP molecule, enzyme luciferase, and oxygen molecule. Luciferin, the responsible molecule for light emission, is transformed into oxyluciferin by the enzyme luciferase. The enzyme consumes oxygen and ATP, which is the principal source of energy in living beings. Finally, a light of about 560 nm is released.
luciferin + ATP + luciferase + O₂ → oxyluciferin + AMP + CO₂+ luciferase + light
Almost the entire amount of energy involved in the reaction turns into luminous energy. ATP used for this light production process comes from the photosite´s mitochondrial electronic chain, responsible for the organism´s energy production.
Photosites are the cells responsible for light production, and many of their mitochondria are placed near the plasmatic membrane to catch oxygen.
Oxygen gets in the organisms through the lantern trachea. During the respiration process, photosites consume oxygen. Mitochondria placed in the cell periphery near the cell membrane catch the oxygen molecules and produce ATP. ATP produced by oxidative phosphorylation is involved in the production of oxyluciferin, turning into AMP.
Posteriorly, the oxyluciferin molecule is recycled back to luciferin. This process shows how chemical energy turns into luminous energy.
Saprophytes play a major role in Nitrogen cycle. Justify ?
Answer:
yes now mcq partner sso explain is nit nessesary
what is chemical reaction?
Answer:
a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.
Explanation:
What is the effect of DNA copying which is not perfectly accurate on the reproduction process?
Answer:
It results in variations in populations for the survival of species. If the variation are more drastic, then the DNA will not be able to function properly leading to the death of the cell.
hope this helps :)
hope it is helpful to you
The syntenic genes B and T are linked. A cross between two parents, with genotypes BBtt and bbTT, produces F1 progeny with the BbTt genotype. What are the possible arrangements of alleles on the F1 progeny's chromosomes
Answer: options related to your question attached below
answer : Bt/bT
Explanation:
Determine the Possible arrangements of alleles on the F1 progeny's chromosomes
Parents : BBtt and bbTT
when BBtt and bbTT crosses ( i.e. BBtt * bbTT )
BBtt * bbTT ( parents crossing )
= Bt/bT ( possible arrangement )
This pedigree supports the fact that the widow's peak is due to a dominant allele, because if it were due to a recessive allele and both parents show the recessive phenotype, then ________________________________. none of the sons would have a widow's peak none of the sons would have a widow's peak all of the daughters and none of the sons would have a widow's peak all of the daughters and none of the sons would have a widow's peak none of the daughters would have a widow's peak none of the daughters would have a widow's peak all of the offspring would have a widow's peak
Answer:
all of the offspring would have a widow's peak
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
what are possible consequences of complete dominance
Explanation:
In complete dominance, the effect of one allele in a heterozygous genotype completely masks the effect of the other. The allele that masks the other is said to be dominant to the latter, and the allele that is masked is said to be recessive to the former.
Part 2
What is the strongest muscle in your body?
Here is a pick of the 5 strongest muscles.
Answer glatus m.
Explanation:
The second law of thermodynamics states that entropy of a system tends to
Explanation:
The second law of thermodynamics states that the total entropy of a system either increases or remains constant in any spontaneous process; it never decreases. ... Heat cannot transfer energy spontaneously from colder to hotter, because the entropy of the overall system would decrease.
This fossil bird and this living salamander both have tails. However, they have different tail structures. The bird has a very short tail made of just one bone that helps it have a light skeleton for flying. The salamander has a long tail with many bones that helps it balance while it runs. What most likely explains why both the bird and salamander have tails and why the tails are different
The fossil bird and salamander both have different tail structure because they both inherited tails from a shared ancestor population initially, but this population eventually separated into different environments.
In order to adapt into their immediate environment they both evolve their tail structure to carry out different functions.How does evolution occur? It is the change in the phenotypic characters of a species over several generation resulting from natural selection and genetic drift.The the tail of salamander was evolved to store fat and proteins, assistance in the movement, hence it has long tail with many bones for ease of movement.
Whereas birds short and light weight tail for the ease of flying and normal functioning.
Hence, different body structure evolved from the same ancestors for the adaptation in different species.
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An amoeba is only made up of one cell. This means that the amoeba is...
A. multicellular
B. unicellular
Answer:
B. Unicellular
Explanation:
A unicellular organism is an organism that contains only one cell. So, because the amoeba consists of a single cell it is unicellular
(Multicellular means it has more than one cell)
Hope this helps! :D
unicellular
Explanation:
because unicellular contain single or one cell
Bauxite is an ore that is mined extensively. What makes bauxite a valuable ore?
A It is extracted for use in food.
B It is burned to generate electricity in power plants.
C It is the primary source for aluminum.
D It is used in the production of steel.
Answer:
C
Explanation:
Bauxite is the most common aluminum ore. Approximately 98% of primary aluminum production is based on bauxite. In the former Soviet Union, aluinite and kaolinite are also used in small proportions for aluminum production. Bauxite is a naturally occurring, heterogeneous material composed primarily of one or more aluminum hydroxide minerals plus various mixtures of silica, iron oxide, titania, and other impurities in trace amounts. The principal aluminum hydroxide minerals found in varying proportions within bauxite are gibbsite (trihydrated) and boehmite and diaspore (both monohydrated). The content of aluminum oxide is 30–60%. Bauxite is generally extracted by open cast mining from strata, typically 4–6 m thick under a shallow covering of topsoil and vegetation (Table I).
️What are any 3 differences between ecosystem biodiversity and genetic biodiversity?help.....
Answer:
Genetic diversity are the differences in DNA among individuals within a species or population. Species diversity is the number or variety of species in the world or in a particular region. Ecosystem diversity is the number or variety of ecosystems within a particular area.
Question 4 of 16 Which chemical equation models a synthesis reaction ? O A. 2Na+MgCl 2 2NaCl+Mg O B. H 2 O+CO 2 H 2 CO 3 C. HCl+LiOH LiCl+H 2 O O CO 2 C+O 2
Answer:
The chemical equation which is a model of synthesis reaction is option B
B. H₂O + CO₂ ---> H₂CO₃
Explanation:
A synthesis reaction is a type of chemical reaction in which two or more reactants combine to form a single product.
A synthesis reaction is illustrated below:
A + B ----> C
In the illustration above, A and B are two chemical substances which serve as the reactants in the chemical reaction. A and B combine with each other to form a product C.
Common synthesis reaction include:
1. The reaction of sodium with chlorine to produce sodium chloride: Na + Cl ---> NaCl
2. The synthesis of Nitrogen (iv) oxide from nitrogen (ii) oxide and oxygen: 2NO + O₂ ---> 2NO₂
3. The synthesis of sulfur trioxide from sulfur dioxide and oxygen: 2SO₂ + O₂ ----> 2SO₃
From the given chemical reactions, the model of a synthesis reaction is option B
H₂O + CO₂ ---> H₂CO₃
Which action can trigger lactic acid fermentation in our bodies?
A.
drinking coffee
B.
reading a book
C.
running a marathon
D.
sleeping
E.
watching a movie
Answer:
C. running a marathon
Explanation:
When you run a marathon you eventually switch to anaerobic respiration since not enough oxygen is present for aerobic respiration to occur (which uses oxygen as the last electron carrier in the electron transport chain). This process causes lactic acid to be produced.
Answer:
running a marathon
I hope this helps
Part of nasal cavity which makes the air warm.
A. Tiny hairs
B. Blood vessels
C. Goblet cells
Answer:
A.tiny hair
Explanation:
that is the right answer...
In a population of goldfish, individuals can be colored orange, white, white with orange spots,
orange with black spots, and orange with white spots. What is the best explanation for these
color differences?
kahit kahit po ayaw mona kana kana aaaa
Pietro has two dogs that are related, and he wants to understand why one of the dogs has tan fur and the other has brown fur.
Which pattern of inheritance would explain the different fur color in the related dogs?
Polygenic inheritance is simply a form of inheritance whereby the trait of the individual or the animal is gotten from the cumulative effects of several genes. In such case, there are many genes which control the expression of the trait. This is quite different from the monogenic inheritance whereby the trait is as a result of the expression of just only one gene.
Since Pietro has two dogs that are related, and one of the dogs has tan fur and the other has brown fur, then this means there's more than one gene which is expressed in this case.
In conclusion, the answer to the question is polygenic inheritance.
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A hybrid offspring of a male lion and a tigress is a _________.
Plz answer I will add you as brainlest
Answer:
Such offspring are called hybrid offspring. Furthermore; within such hybridization process, if male is a lion and female is a tiger (tigress) then the hybrid offspring is termed as a liger. Vice-versa; if the male is a tiger and the female is a lion (lioness) then the hybrid offspring is called a tigon.
Answer:
Liger
Explanation:
a. What is the recombination frequency of the genes R and S if Q and S have the highest recombination frequency?
1. Based on the model, which of the pairs of
species most likely have the greatest number
of differences in their DNA and protein
sequences?
a. Radish and seaweed
b. Banana and lemon
c. Onion and radish
d. Banana and onion
Based on the model, Banana and lemon are the pairs of species most likely have the greatest number of differences in their DNA and protein sequences. Thus, option B is correct.
What is DNA?
DNA contains the genetic information needed to determine the structure and function of living organisms. Each DNA molecule is found on a chromosome, and the segments of that DNA molecule are genes.
In somatic cells -such as nerve and muscle cells- the DNA sequences are the same, but what determines the synthesis of different proteins is the information that the genes have, i.e., fragments of DNA contained in a cell.
For this reason, nerve cells have a gene that allows them to synthesize the enzyme cholinesterase, while muscle cells have a gene that codes for myosin, even though they both possess the same DNA sequence.
Therefore, Based on the model, Banana and lemon are the pairs of species most likely have the greatest number of differences in their DNA and protein sequences. Thus, option B is correct.
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The rising of bread dough is the result of The rising of bread dough is the result of oxygen being released. carbon dioxide produced by fermentation. biotin production. oxidative phosphorylation.
Answer:
Fermentation
Explanation:
Fermentation is the process whereby carbohydrates are converted to acohol or acid by the activities of some enzymes. During the process of fermentation, carbon dioxide is produced and it is found as tiny pockets of air inside the bread dough. This make it to rise. The alcohol produced evaporates later during the bread making process.
35. When substances move in and out of cells using energy this is called:
a. active transport
b. passive transport
c. activation energy
d. selective transport
Answer:
active transport
Explanation:
Active transport is the movement of particles from a region of low concentration to a region of high concentration against the concentration gradient that requires energy.
what inhibits the synthesis of viral proteins help block viral replication
Answer:
antibiotics
Explanation:
Only some antibiotics will stop protein synthesis.
Answer:
The activated kinase phosphorylates elongation eIF-2 to its inactive form. These events lead to the inhibition of protein synthesis that stops the replication of viruses.
Explanation:
Which best defines a gene?
A. A gene is a unit of protein that contains the
genetic code.
B. A gene is a unit of DNA that contains code
for the creation of one protein.
C. A gene is a unit of DNA that contains the
code for the creation of amino acids.
D. none of the above
In holly trees, red fruit (R) are dominant to white fruit (c), and spiny leaves (L) are dominant to smooth leaves (1).
Complete the Punnett square to figure out how many of the new holly tress from this cross would be expected
to have white fruit and smooth leaves.
complete the dihybrid punnet square to figure out how many of the new holly trees from this cross would be expected to have white fruit and smooth leaves?
A- 3
B- 9
C- 2
D- 1
Answer:
The answer is D: 1
Punnet squares are FUN