Answers
Answer:
67. Obligate anaerobes
68. Aerotolerant anaerobes
69. pH
70 media nutrient density
71. agar concentration
72. extremophiles
Explanation:
Anaerobes are microorganisms which do not require oxygen for their metabolic activities. The types of anaerobes based on metabolism are: obligate anaerobes; facultative anaerobes ; and aerotolerant anaerobes.
Some bacteria are anaerobes.
67. Obligate anaerobes do not require oxygen at all for their metabolism. They die in the presence of oxygen.
68. Aerotolerant anaerobes do not require oxygen as well but can also tolerate oxygen. they are unaffected by the presence or absence of oxygen
69. The pH of the medium affects the growth of bacteria. When pH becomes too low or too high, bacteria colonies begin to die.
70. when the nutrient concentration is high, growth rate of bacteria colony increases, but when it is low, bacteria colony growth decreases.
71. agar concentration limits the growth of bacteria colony. When the agar is very concentrated, that is the medium is hard, the bacteria colony is limited in their ability to move and vice versa.
72. Extremophiles is the name given to archaea that thrive in extreme conditions of temperature and pH. For example, the archaeal Methanopyrus kandleri strain 116 grows at 122 °C while the genus Picrophilus e.g., Picrophilus torridus has the ability to grow at a pH of 0.06.
Related Questions
The effects of deforestation can include:
Answers
Answer:
a whole lot
Explanation:
- increased greenhouse gas emissions
- more wildfires
- more global warming
- even less trees
- loss of habitat
- extinction
need I go on
I’m stumped. Can somebody help me please?
Observations in the lab that do NOT require numerical data are know as what type of observations?
A. qualitative
B. quantitative
C. both qualitative and quantitative
Answers
Answer:
A. qualitative observation.
is Professional athletic ability inherited or acquired?
O Inherited
O Acquired
2. is color blindness inherited or acquired
A. inherited
B. Acquired
Answers
Answer:
both answers are b i think
Explanation:
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Kari and Jamal study the results of an investigation that provide evidence from different variations of the same trait of two people who carry Gene 1 and Gene 2. Kari Jamal would like to determine how the different variations of the same trait are possible when the same genes are involved. The answer to which of the following questions would best help Kari and Jamal?
a Are these genes regulated differently in each person?
b Are both genes found on the same chromosome?
c Do both genes produce a protein when expressed?
d Do both genes share a similar location within the genetic material?
Answers
Which of the following best describes a
community?
Crabs on the seafloor
Sharks, shrimp, clown fish, anemones on coral reef
Sea turtles in a part of the Atlantic
Sunflowers on a hill
Answers
Community, also called biological community, in biology, an interacting group of various species in a common location. For example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.
Coral reef
Sharks, shrimp, clown fish, and anemones on coral reefs. Therefore option B is correct.
A community in ecology refers to a group of interacting organisms living in the same habitat and having functional relationships with one another.
In this case, option B best describes a community as it involves various species (sharks, shrimp, clownfish, anemones) living together in a coral reef ecosystem.
These species depend on each other for survival, such as the clown fish finding protection in the anemones and the shrimp serving as a cleaning service for the reef.
Their interactions create a complex and interdependent web of life, contributing to the overall health and stability of the coral reef ecosystem.
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which are examples of cartilaginous fish?
A. seahorses, skates, hagfish
B. skates, rays, sharks
C. lampreys, hagfish, pufferfish
D. goldfish, tuna, salmon
Answers
Answer:
B skates , rays , sharks.
Answer:
B is correct
Explanation:
If the fraction of base pairs devoted to protein-coding genes is the same as the fraction of the total genes that they represent, what is the average number of base pairs per protein-coding gene
Answers
[tex]\mathbf{Here \ is \ the \ missing \ part \ of \ the \ question} \\ \\ \mathbf{The \ genome \ of \ Escherichia \ coli \ consists \ of \ 4380 \ genes, \ encoding \ 4290} \\ \\ \mathbf{ proteins, \ in \ jus t \ 5175720 \ base \ pairs. \ What \ percent \ fraction \ of\ the} \\ \\ \mathbf{ Escherichia \ coli \ genes \ encode \ proteins?}[/tex]
Answer:
1182
Explanation:
From the information given:
Number of present genes = 4380
the total no. of protein-encoding = 4290
Total no. of base pairs = 5175720
The percentage fraction of genes encoding the protein is;
total no of protein-encoding gene/total no of present genes
[tex]\mathbf{\dfrac{4290}{4380} = 0.9795}[/tex]
= 97.95%
The average number of base pairs per protein-coding gene is;
= total no. of base-pair/ no of present genes
[tex]\mathbf{ \dfrac{5175720}{4380} = 1181.6} \\ \\ \simeq \mathbf{1182}[/tex]
where do we find the most gases in the atmosphere.
Answers
Answer: The most gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere.
Where are most gases found in the atmosphere?
Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.
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Explanation:
HELP PLEASEEE!! 10 points and BRAINLIEST!!
2. Honey Bees may be headed for extinction.
Why do you think this is happening? (Things
to think about: habitat destruction, erosion,
pollution, invasive species, human impact.)
Answers
Answer:
Well the most common is habittat destruction. With the number of humans only growing, more land is needed and habitat desturctions occur. Lack of food is also a problem, as some crops don’t grow as much so the bee’s food source is smaller which leaves thousands dead. Also if the food source doesn’t run out, there are pesticides sprayed and the bees will die if eaten one which the chemical properties in a pesticide will kill. Also if not used, littering, if you dump it into a water source, the water gets contaminated and the bees could die from that, or the water spreads ano the flower would receive this chemical property, which could kill the Bee’s food source, or the flower doesn’t die but when the bees consume it, the bee will die.
Answer:
honey bees Extinction types are parasites ,habitat loss ,and cell phones. but there two main types of parasites that are harming the honeybees are Vero mites and tracheal
9. All bacteria are _____________________.
Answers
Answer:
All bacteria can evolve by selection on changes to their genetic material DNA caused by genetic recombination or mutations. Mutations come from errors made during the replication of DNA or from exposure to mutagens.
Explanation:
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What would the molecular formula be for the following? For each answer, state what kind of bonds hold the molecule together (ionic, polar-covalent, or non-polar covalent)
a. Flourine reacting with sodium
b. Oxygen reacting with carbon
c. Nitrogen reacting with hydrogen
d. Silicon reacting with hydrogen
e. Sulfur reacting with hydrogen
f. Magnesium reacting with oxygen
Answers
Answer:
Explanation:
A. sodium fluoride = NaF = ionic bond
B. carbon dioxide = CO2 = polar covalent bond
C. hydrogen nitrate = 2NH3 = ionic bond
D. silicon hydride = Si nH 2n+2 = polar covalent bond (i think.. could be non-polar but definitely not ionic)
E. hydrogen sulfide = H2S = non-polar covalent bond
F. magnesium oxide = MgO = ionic bond
hope this helps! :)
What two factors do you need to measure to calculate the speed of an object such as a car?
A distance traveled and the time it takes to travel that distance
B. time it takes to go from 0 mph to 100 mph and the time of day
Ο Ο
C. the weight of the car and the car's maximum speed
D. size of the car tires and the distance the car traveled
o
E. size of the engine and how long it takes the car to move
Answers
By which process does carbon dioxide enter a plant?
Answers
Answer:
Photosynthesis
Explanation:
Plants get the carbon dioxide they need from the air through their leaves. It moves by diffusion through small holes in the underside of the leaf called stomata . Guard cells control the size of the stomata so that the leaf does not lose too much water in hot, windy or dry conditions.
In the fourth century BC, Aristotle observed a phenomenon in which he saw a circular shadow on the Moon. He argued that Earth was a sphere based on this observation. What phenomenon caused the shadow on the Moon? *
a solar eclipse
a lunar eclipse
a spring equinox
a summer solstice
Answers
Answer:
a lunar eclipse
Explanation:
The shadow that Aristotle saw was caused by a lunar eclipse. At that time the sun, earth, and the moon nearly straight alignment caused the Earth's shadow to be reflected on the moon. This shadow is what ultimately led Aristotle to believe that the Earth was a sphere. This should not be confused with a solar eclipse which is similar but instead the sun, moon, and earth align in that order which causes the moon to completely block the sun to anyone on earth.
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What is the advantage (benefit) of sexual reproduction?
Question options:
increases genetic variation
requires only one parent
faster growth rate
requires less energy
What are TWO advantages (benefits) of asexual reproduction? SELECT TWO!
Question options:
faster reproduction rate
increases genetic variation
requires less energy
requires two parents
Answers
Question 1 Answer: Increases genetic variation
Question 2 Answer: Faster Reproduction rate and Requires less energy (it is more time and energy efficient as a mate is not required)
Which is most likely true of prokaryotic cells?
A) They are large complex cells
B)Their DNA is contained in the nucleus
C)Their organelles are surrounded by membranes
D)Their genetic material is found in the cytoplasm
Answers
Answer:
option D is the right answer hope it helps
Planting trees reduces destruction to homes and crops by serving as ___ during typhoons and storms.
a. Shelter
b. Income
c. Feltilizers
d. Windbreakers
Answers
Answer:
Windbreakers
Explanation:
Income and fertilizers have nothing to do with it, so those are not it. Then there are shelter and windbreakers. It kind of acts as a shelter, but mainly it protects crops and homes by acting as a windbreaker. If it was shelter, that would mean that the crops would mainly be planted under the trees to reduce damage from storms and typhoons. Therefore, it is D) Windbreakers.
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What is the role of Golgi apparatus for tagging of proteins.
Answers
Answer:The Golgi also has important functions in tagging vesicles with proteins and sugar molecules, which serve as identifiers for the vesicles so they can be delivered to the proper target. The organelle is also called the Golgi complex or Golgi body.
Why does type 2 diabetes result in high blood pressure? HELP PLS!!
Answers
An animal leaves its footprint in wet mud, and later, when the mud dries, the footprint can be filled with plaster. When the plaster hardens, it has
same shape as the foot of the animal. The plaster cast could then be used to make new footprints in soft mud identical to those made by the animal. The
process of using the plaster cast to make new footprints most accurately models
translation of mRNA codons to form a protein.
transcription of mRNA from the original DNA code.
insertion of nucleotides into the mRNA codons
deletion of nucleotides from the tRNA anticodons.
Answers
Answer:
The process of using the plaster cast to make new footprints most accurately models transcription of mRNA from the original DNA code
Explanation:
Transcription is a process in protein synthesis that takes place in the nucleus. During transcription, the DNA of a gene is used as a template to make an RNA molecule. In the process, nucleotide bases which are complementary to those found in the DNA molecule pairs with the DNA bases in a process called complementary base-pairing. However, Uracil is the nucleotide base that binds to adenine in the mRNA instead of thymine. An enzyme called RNA polymerase II catalyzes the formation of a mRNA molecule. Three steps are involved in transcription:
Initiation- is the beginning of the transcription process when RNA polymerase binds to DNA.
Elongation- addition of nucleotides to the RNA strand.
Termination- is the end of the process whereby RNA strand detaches from DNA template. The resulting mRNA is a single-stranded copy of the gene.
It models the transcription of mRNA from the original DNA code.
The process of using the plaster cast to make new footprints most accurately models the transcription of mRNA from the original DNA code because both have exactly the same type of materials.
Transcription is the process in which the information present in a strand of DNA is copied into a new molecule of messenger RNA which serve as a blueprints for protein synthesis during the process of translation. The mRNA has all the information that is present in the original DNA so we can conclude that it models the transcription of mRNA from the original DNA code.
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While Exploring a fossils site you find a bunch of fossils leaves with smooth edges what could you learn from this evidence?
Answers
Answer:
guvj
Explanation:
Which natural forces can create sediments
A Wind and ice
B Moving air,moving water,and moving ice
C Water and ice
D sunlight
Answers
Answer:
C - Water and iceHope it help❤️
How does energy from the Sun travel to Earth?
through radiation
through convection
through conduction
through the movement of particles
Answers
Answer:
A
Explanation:
its right on the enviromental systems cumlative exam on edg 2021
The energy from the Sun travel to Earth through radiation.
Heat transfer by radiation
Radiation is a method of heat transfer that does not require a material medium for the heat transfer process.
Energy transfer from the sunThe energy transfer from the sun reaches the earth through radiation process since the the energy travels in wave form.
Thus, the energy from the Sun travel to Earth through radiation.
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How have human activities effected the air in earth’s atmosphere?
Answers
Answer:
Human activities have had a negative impact on Earth's atmosphere.
Explanation:
Human activities, since the Industrial Revolution, have gradually been having more and more influence on Earth's atmosphere. As more and more the economies have developed, the bigger and bigger the output of gases into the atmosphere. The gases that are released into the atmosphere are mostly greenhouse gases, but there are also some that are highly toxic.
This has contributed to a sharp increase in CO2 levels in the atmosphere, which is speeding up the process of global warming, and that can have devastating consequences for life on Earth. Also, some of these gases managed to cause huge damage to the ozone layer, the layer that protects us from UV radiation, and if the ozone is gone, every complex organism will be gone as well.
Describe all the energy transformations that take place in a car,
and explain how these transformations exemplify the law of conservation of energy
Answers
Answer:
first the car starts with potential energy when the car starts to move which is kinetic energy and when you come to a sudden stop you will get yanked forward because one of Newton's law are that what is in motion stays in motion.
Explanation:
If the United States removed state governments, which of the following would be the closest to the new type of government? federal
confederation
unitary
democratic
Answers
Answer:
Explanation:
Democratic I would think So D.
Digestion of dietary fats
Answers
is bacteria living or non living? Explain why
Answers
Answer:
It is living
Explanation:
Bacteria reproduces and consumes energy just like all other living things.
Which statement best describes the role of the nucleus in a cell?
The gate at a factory keeps out unwanted cars.
The elevator at a factory moves materials around the building.
The boss at a factory gives out orders and directions.
The boxes at a factory are used to ship materials to customers.
Answers
The boss at a factory gives out orders and directions
While studying the pollination patterns of bees, Marsha noticed that there were flowers that the bees in her area seemed to visit more frequently than others. The following table shows the flowers that 100 bees visited during a specific time period.
Flower Flower Color Number of Bees
sunflower yellow 32
daisy white 50
petunia purple 18
Marsha claims that the bees frequented the daisies the most because they are attracted to the color of the flower.
What is a reasonable alternate conclusion that can be drawn from Marsha's data?
a. Bees frequented the daisies the most because bees are unable see the color white.
b. Bees frequented the daisies the most because daisy pollen has an odor that is attractive to bees.
c. Bees frequented the daisies the most because they are most attracted to the color yellow.
d. All of these
Answers
Answer:
B
Explanation:
The only reasonable alternate conclusion that can be drawn from Masha's data is that the bees frequented the daisies the most because daisy pollen has an odor that is attractive to bees.
The conclusion is the only one that suggested an alternate reason that is compatible with the trend observed in the data.
Concluding that the bees frequented the daisies because they are unable to see the color white is erroneous because the bees could not have visited the daisies without the ability to see color white. If the bees were also most attracted to the color yellow, they should have visited the sunflower the most.
The correct option is B.
Answer:
B. Bees frequented the daisies the most because daisy pollen has an odor that is attractive to bees.
Explanation:
Scientists have differing opinions and interpretations when it comes to producing results for experiments. This creates the variety in science that springs up new investigations and experiments.
Marsha claimed that bees frequented the daisies because they are attracted to the color of the flower. An alternate explanation for why bees frequented daisies could be because daisy pollen has an odor that is attractive to bees.
Since daisies are white, it does not make sense to say that bees cannot see the color white. The explanation that bees frequented the daisies the most because they prefer the color yellow also is not reasonable because they would likely have visited the sunflowers the most if this were the case.