Answer:
The Krebs cycle, also known as the citric acid cycle or the tricarboxylic acid (TCA) cycle, is a series of chemical reactions that occur in the mitochondria of cells. These reactions are an important part of the process of cellular respiration, which produces energy for the cell.
The key events of the Krebs cycle include the following:
The conversion of acetyl-CoA to citrate by the enzyme citrate synthase. Acetyl-CoA is derived from the breakdown of glucose and other sugars, and citrate is the first intermediate product of the Krebs cycle.
The conversion of citrate to isocitrate by the enzyme aconitase. Isocitrate is the second intermediate of the Krebs cycle.
The conversion of isocitrate to α-ketoglutarate by the enzyme isocitrate dehydrogenase. α-ketoglutarate is the third intermediate of the Krebs cycle.
The conversion of α-ketoglutarate to succinyl-CoA by the enzyme α-ketoglutarate dehydrogenase. Succinyl-CoA is the fourth intermediate of the Krebs cycle.
The conversion of succinyl-CoA to succinate by the enzyme succinyl-CoA synthetase. Succinate is the fifth intermediate of the Krebs cycle.
The conversion of succinate to fumarate by the enzyme succinate dehydrogenase. Fumarate is the sixth intermediate of the Krebs cycle.
The conversion of fumarate to malate by the enzyme fumarase. Malate is the seventh and final intermediate of the Krebs cycle.
The conversion of malate to oxaloacetate by the enzyme malate dehydrogenase. Oxaloacetate is the starting material for the next round of the Krebs cycle.
As the Krebs cycle progresses, electrons are transferred from the intermediates to NADH and FADH2, which are electron carriers. These carriers then transfer the electrons to the electron transport chain, where they are used to produce ATP, the energy-carrying molecule used by cells. The end products of the Krebs cycle are carbon dioxide and water.
Explanation:
If data for the growth of this bacterial population continued to be recorded, would the data point at 60 hours be above or below 37 million? Support your answer.
Answer:
Above 37 million
Explanation:
Explanation in picture below
Growth of bacterial cultures is defined as an increase in the number of bacteria in a population rather than an increase in the size of individual cells.
Thus, Bacterial population growth occurs geometrically or exponentially: in each division cycle (generation), one cell produces 2 cells, then 4 cells, then 8 cells, then 16, then 32, etc.
The relationship shows that the average generation time is constant and the growth rate of the bacterial population is proportional to the number of bacteria at any given time.
This relationship is valid only during the period when the population grows exponentially, ie. in the logarithmic phase of growth. Therefore, graphs showing the growth of bacterial cultures are plotted as the logarithm of the number of cells.
Thus, Growth of bacterial cultures is defined as an increase in the number of bacteria in a population rather than an increase in the size of individual cells.
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What is the main body system affected from sickle cell anemia?
The above image shows the descendants of one type of finch and the variation in the finch
species that occurred over many generations. Which of the descendant species above developed
an adaptation for getting insects from narrow cracks in the bark of trees?
Please help. If you do not know then skip this. NO LINKS
Answer:
A. electricity
B. it started blowing with force and with power.
C. Electricity, technology, etc.
D.
Which of the following can be determined by this diagram
A. The energy of the mongoose is passed on to the hare
B. The cheetah supplies energy to a variety of organisms
C. The Energy of the Acacia tree is passed to the impala
D. The aardvark ,pangolin , and mongoose are all producers
PLEASE HELP!!!
Answer:
c
Explanation:
The acacia tree is a producer that get eaten by the impala
The energy from the tree is given to the impala when it eats the tree
If the original cell
(parent cell) has 30
chromosomes, how
many chromosomes
will the new cells
have?
DOES ANYONE KNOW HOW TO SOLVE THIS??
Answer:
nope
Explanation:
only on here for points sorry
What method of gene regulation or gene expression is the most common for eukaryotic
genes?
transcription factors
miRNA
dicer enzymes
mRNA degradation
Answer:
Transcription factors
Explanation:
This is because Eukaryotic gene expression is regulated by transcription factors and RNA processing, which occur in the nucleus, and during protein translation, in the cytoplasm.
Transcription in eukaryotic cells is controlled by proteins . These proteins then bind to some specific regulatory sequences and try to control the activity of RNA polymerase. The Gene expression is regulate by transcriptional regulatory proteins . Also ,the packaging of DNA into chromatin and methylatiin indicate levels of complexity to the control of eukaryotic gene expression.
the fossil fules are used as energy sources but they cause pollution and are what
Answer:
The correct answer is - non-renewable.
Explanation:
The non-renewable source of energy is the source of energy that can not be replaced naturally in the manner and the pace of the consumption of these sources. Nuclear, oil, fossil fuels, natural gases and other are an example of these type of energy source.
Fossil fuels were generated due to the decomposition of the dead plants and animals within the Earth over millions of years therefore these are called fossil fuels. These fuels are cause pollution by burning.
Questions and Answers on photo.
Zoom in if needed
Help :(
Answer:
The question didn't really make that much since to me but I think its the second answer.
Explanation: If you think about it being able to adapt to a new place is really helpful when it comes to life, especially after a natural disaster
You are observing a woodland habitat and take note of a few trophic
relationships. You identify a few species of ferns that are being eaten by beetles.
You are also able to observe a snake in the process of eating a small species of
finch. You analyze your notes later and realize you missed a part of the food
chain. What part are you missing?
A. Tertiary Consumer eating Producer
OB. Secondary consumer eating Tertiary Consumer
C. Producer eating Primary Consumer
D. Secondary Consumer eating Primary Consumer
By analyzing the notes, one can say that in the given scenario, secondary consumer eating primary consumer is missing. The correct option is D.
What are consumers?A consumer in a food chain is a living being that consumes organisms from another population. A heterotroph is a consumer, and an autotroph is a producer.
As in the notes it is mentioned that ferns are eating beetles, and snakes are eating finch. It is lacking secondary consumers eating primary consumers.
Thus, the correct option is D.
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Imagine that an area was set aside to relocate orangutans displaced from their rainforest habitats. A solution like this would involve many groups of people and careful considerations. Review the questions below, then develop at least two additional questions that could be considered.
What do orangutans use for shelter in their native ecosystem?
How much area does a specific number of orangutans need?
Answer:
a) Orangutan prefer to shelter in leafy trees or only leaves
b) One territory is of size 9 sq. km.
Explanation:
a) Orangutans spend a large part of their life in tropical rainforest trees. They prefer to sleep on the bunch of green trees and protect themselves from harmful weather conditions by using broad leaves of rainforest trees.
b) Each individual territory of a male Orangutan is near about 9 sq. km. and can extend up to 15 square kilometer. In one territory only one male lives along with other females and young ones.
Which of the following examples best define multiple alleles?
a.Pea plants have different genes that code for
a various different traits such as shape, size, height,
and flower color.
b.The wing size of drosophila flies is controlled by
three alleles.
с.Snapdragon flowers hawthree genotype
combinations for red, pink, or white coloration.
d.There are over eight genes that influence human
eye color.
Answer: The correct answer is b.
Explanation:
The brown-colored bones in each animal help to connect their limbs to a specific joint in the torso, or middle of their body. What type of structure do these bones represent, and what is their significance in terms of evolutionary relationships?
Answer: These structures connect their limbs to a specific joint in the torso or in the middle of their body. These structures can be identified as homologous, they are morphologically similar or possibly they derive from a common ancestral structure.
Explanation:
The brown color bones in animal help to connect limb homologous structures that connect their limb to the specific joint in the torso, this and having an evolutionary relationship.
What are bones?If two bones split where they meet at a joint, it is termed a dislocation. The place where two bones connect and therefore can move is called a joint.
A displaced joint is one where the bones are out of alignment with each other having a significant role in evolution.
Despite their similar arrangements and being formed in a similar way throughout embryonic development, these structures have slightly different shapes and purposes, they refer to them as homologous structures.
Therefore homologous structures have an evolutionary relationship to connect brown-colored bones connect limbs to joint torso.
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water vapor changing to liquid water
A.evaporation
B.condensation
C.precipitation
D.water cycle
After an outbreak of an illness, scientists use epidemiology to try to find *
A. the origin of a disease.
B. how the disease spreads.
C. how to prevent the disease from spreading.
D. all of the above
Answer:
D. all of the above
Explanation:
ANSWER THESE THREE QUESTIONS PLSS!! I WILL GIVE YOU BRAINLYEST!! NO LINKS!!
How do pollutants get into groundwater?
What is the purpose of the dam located in
this watershed?
What impact can a dam have on this
ecosystem?
Answer:
they go underwater to do things like breathe
Explanation:
If the population of tree were destroyed due to deforestation what is the most likely to outcome of this food chain 
Answer:
A
Explanation:
The primary would decrease due to no trees
8. DNA replication is a serni-conservative process that results in two DNA 1
molecules. What is true about each of the two new DNA molecules ?
Answer:
DNA replication is called semiconservative because the two resulting DNA molecules each have one new DNA strand and one old strand from the original DNA molecule.
Explanation:
PLEASE PLEASE HELP! No websites please!
Answer:
Igneous rock
:D
In all of these organisms, which microscopic structures carry out major life functions?
Captionless Image
A) Chloroplasts
B) Cells
C) Wings
D) Antennea
Answer:
B) Cells
Explanation:
Cells are the basic unit of structure of Life. Without cells we wouldn't exist.
Can someone help me with these? please... I’m failing and well my turning this in, i will pick up my grades a little.
HELPPP PLEASEEE
If two-hybrid Ff rabbits mate, what will the offspring look like?
Answer:
25% FF - homogenous dominant
25% ff - homogeneous recessive
50% Ff - heterogenous
Explanation:
When two-hybrid Ff rabbits mate, then the offspring look like
25% FF - homogenous dominant25% ff - homogeneous recessive50% Ff - heterogenous.What is Mating?For the goal of sexual reproduction, opposite-sex or hermaphrodite organisms team together during mating. Two gametes join together during fertilisation. When two sexually reproducing creatures join their sex organs, internal fertilizations and insemination take place.
Punnett Square situations with two hybrid parents marrying are frequent. The heterozygous hybrid parents possess a single allele (A and a, Dominant and Recessive). There are four genotype outcomes that can happen if two hybrid parents mate.
Thus, when two-hybrid Ff rabbits mate, then the offspring look like
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Which of the following is true of Darwin's theory of natural selection?
A. Individuals with a favorable traits are most likely to survive and reproduce.
B. There is no variation in organisms in a population.
C. Only a small number of offspring in a population are born.
D. All individuals in a population ahve the same genetic traits
Answer:
A) Individuals with favorable traits are more likely to survive and reproduce.
Explanation:
I think it's correct???
(04.05 MC)
Which claim best supports the cycling of carbon through the spheres of Earth?
Answer:
Burning fossil fuels adds the necessary amount of carbon in the atmosphere for cellular respiration to take place
Most of the Earth’s freshwater is found in __________.
A)
oceans
B)
lakes
C)
groundwater
D)
icecaps and glaciers
E)
swamps
Answer:
D) icecaps and glaciers
Explanation:
Edge
The answer is D. Icecaps and Glaciers.
The reason is because iceburgs/glaciers contain huge chunks of ice. Glaciers have around 0.1 square kilometers, or 25 acers.Around 101171.411 sq meters, of ice. Iceburgs are around 5 meters, or 16 feet (across) Again,of ice.
We know that to make ice, you freeze water, by putting it in a cold enviorment, or simply putting a glass of water in you freezer.
Hope this helps!
~Learning with Natalia~
In class your professor shows you an MRI scan of a primate brain. The professor points out the relatively large size of the olfactory bulb beneath the frontal lobe. This suggests to you that Group of answer choices this primate shows a derived trait for an enhanced sense of smell as this trait is not commonly observed in mammal species this is a species of prosimian because it has an increased reliance on vision this is a species of anthropoid because it has an increased reliance on vision this primate must be a species of prosimian, as that suborder of primates still relies heavily on the sense of smell for many aspects of daily life
Answer:
this primate must be a species of prosimian, as that suborder of primates still relies heavily on the sense of smell for many aspects of daily life
Explanation:
The suborder prosimian belongs to primate mammals and is at a level inferior to the real monkeys.
Prosimians characterize as having an elongated head that culminates in the snout. They have big eyes with modifications in the retina that improve sight during the night. They are quadrupeds with a svelte body and soft hair. Their tail is long but not prehensile. They move from tree to tree by making use of their extremities. They have a dental comb to clean themselves and others.
Their snout is humid, and the sense of smell is much more developed than in other primates. They are the primates with the greatest sense of smell. Their olfactory bulb and glands are remarkably developed in concern with other primates. With their tree and nocturnal habits, they depend a lot in this sense to move, relate, be aware, and feed.
Cory states the following argument about the evolution of aardvarks and anteaters.
"Aardvarks and anteaters both use long, sticky tongues to capture and eat ants or termites. Aardvarks are native to Africa, while anteaters are native to the Americas. However, their similarities provide evidence that both groups of species evolved from a common ancestor that used its tongue to eat ant-like insects."
Which claim, if supported by evidence, would provide the strongest counter-argument AGAINST Cory's argument?
A. The tongues and diet of aardvarks and anteaters are an example of convergent evolution.
B. The tongues and diet of aardvarks and anteaters are an example of adaptive radiation.
C. The Americas and Africa were once joined together, and animals roamed freely between the two lands.
D. A long, sticky tongue evolved in response to the tunneling behavior of ants, an example of coevolution.
the rate of the Earth's and moon's rotation and revolution constant?
The moon orbits the Earth once every 27.322 days. It also takes approximately 27 days for the moon to rotate once on its axis. As a result, the moon does not seem to be spinning but appears to observers from Earth to be keeping almost perfectly still. Scientists call this synchronous rotation.
Most nonrenewable energy resources are burned for us to use their energy. Which of the following is a nonrenewable energy source that is NOT burned?
A) nuclear
B) coal
C) natural gas
D) biofuels
Answer:
The correct answer is - A) nuclear.
Explanation:
Most of the non-renewable sources of energy are fossil fuels that are formed by the thermal decomposition of dead organic matter for million years and are converted to lighter hydrocarbons that contain high electrostatic potential energy.
Burning is the process that breaks the hydrocarbons into water vapor and CO2 with high amount of energy. Coal, natural gas and biofuels all three are fossil fuels and nuclear products are not fossil fuel but radioactive elements.