Answer:
d. 4; 2
Explanation:
To reduce one molecule of O2, 4 electrons must be passed through the electron transport chain and 2 molecules of NADH are oxidized. So the correct option is D.
What is the electron transport chain?
A chain of compounds known as the "electron transport chain" uses the electrons from an electron carrier to create a chemical gradient. It could function as the fuel for oxidative phosphorylation. The molecules that make up the chain include peptides, proteins, enzymes, and other substances.
Oxidative phosphorylation is a highly effective way for producing large amounts of ATP. A crucial component of the metabolic process is ATP. ATP is produced as a result of the transport of electrons from the electron acceptor to the electron donor. In the electron transport chain, it is one of the crucial stages. The most ATP is created in this phase of cellular respiration compared to any other phase.
Therefore the correct option is D.
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Are there
more tissues or more organs in your body?
Explain your reasoning.
Answer: There are more tissues than organs.
Explanation:
There are four types of tissues: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. In terms off types of organs we have 79 different ones but only 5 are considered necessary for survival. Without those five (heart, brain, kidneys, liver and lungs), you wouldn't be alive.
Organs are MADE of tissues. Therefore if there are 79 organs and each organ is made of two or more tissues, tissues will be in higher quantity.
Which model is conceptual?
A. A bar graph that shows how many students buy lunch each day
B. A graph that uses analyzed data to show the spread of a disease
C. A mental image of types of food organized into a pyramid
OD. A plastic skeleton that shows all the bones of the body
SUBMIT
The model that is conceptual is a mental image of types of food organized into a pyramid (option C).
What is a conceptual model?A conceptual model is the model that is represented by concepts or related concepts formed after a conceptualization process in the mind.
A conceptual model relates to concepts or mental conception i.e. existing in the imagination.
According to this question, the model that is conceptual is the mental image of types of food organized into a pyramid.
Note that; other options are realistic and can be seen.
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Pests destroy approximately what percentage of all food crops?
A. 1/20
B. 1/3
C. 9/10
D. 3/4
Why was the need for catalyst in the origin of life important?
Answer:
Catalysts are integral in making plastics and many other manufactured items. Even the human body runs on catalysts. Many proteins in your body are actually catalysts called enzymes, which do everything from creating signals that move your limbs to helping digest your food. They are truly a fundamental part of life.
Gambling away one's retirement savings in a single night would most likely be categorized as a(n)
Multiple Choice
crime.
infraction.
accident.
deviant act.
Answer:deviant act
Explanation:because why
How can downwelling affect the ocean water
around the poles?
The marine life can survive in these extremely frigid climatic circumstances at the poles when the ocean's surface water gets a little bit warmer.
What are benefits of downwelling on poles?Downwelling is the process through which warm, light, dense water rises to the top and cold, heavy, and thick water sinks into the ocean floor. Downwelling causes oxygen-rich water to ascend to the surface where it is carried by the high density water that rises to the sea's surface, allowing marine life to breathe freely. Additionally, when the ocean's surface water gets a little warmer, marine life can survive in the polar regions' extremely harsh climates a little easier.
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A black cat and a white cat have four black kittens in the F1 generation. In the F2
generation, there are three black kittens and one white kitten. Explain how the Fz
generation proves that genetic information passes unchanged
from one generation to the
next,
even when a specific trait is not exhibited.
The white cat is the recessive allele w, while the black cat is the dominant allele B. However, in the f1 generation, the dominant allele concealed the recessive features, but they are heterologous dominant, i.e. BBww in f2 second filial generation: Bw x Bw.
There are three black kittens and one white kitten when f2 second filial generation offspring are crosslets. Consider the genotype of white cat WW and black cat as BB in the first generation as it's given in question all the offspring of f1 generation are black giving a hint that black is dominant over white.
Now genotype of f1 offspring is wB now in the second filial generation where 2 offspring of f1 crossed the resultant offspring is 3 black kittens and 1 white kitten. second filial generation is the second filial generation of the offspring produced by inbreeding F1 people, whereas F1 generation refers to the first filial generation of the offspring from the parents. hence, the results are BB, Bw, Bw, and ww.
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identify the independent variable and dependent variable in the scientific method
The correct answer is the independent variable is one that you manipulate, control, or vary to investigate its effects and the dependent variable that being tested and measured in an experiment .
The simplest way to determine which variable in your experiment is the Independent Variable (IV) and which is the Dependent Variable (DV) is to put both variables in the sentence below in the correct order. "A change in the DV is caused by the IV." It is impossible for DV to cause any change in IV."
Example: Independent and dependent variables You plan a study to see if changes in room temperature affect math test scores. The temperature of the room is your independent variable. You change the temperature of the room by making it cooler for half of the participants and warmer for the other half.
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Which statement is true of all scientific laws?
A. They were established by scientists hundreds of years ago.
OB. They are factual explanations that cannot be questioned.
OC. They describe nature through the past, present, and future.
D. They must be based on mathematical formulas to be valid.
Answer:
C
Explanation:
C is the correct answer because all of the scientific laws ultimately described nature one way or another.
Glyphosate is a chemical used in herbicides to kill plants. Glyphosate works
by stopping the production of amino acids. Which type of organelle must
interact with glyphosate, to prevent the amino acids from joining together
and killing the plants?
The correct answer is shikimate type of organelle must interact with glyphosate, to prevent the amino acids from joining together and killing the plants .
Glyphosate inhibits the enzyme 5-enolpyruvylshikimate-3-phosphate (EPSP) synthase in plants, disrupting the shikimic acid pathway. The resulting decrease in EPSP production reduces aromatic amino acids, which are essential for protein synthesis and plant growth.
Glyphosate is a non-selective herbicide, which means it will kill nearly all plants. It prevents plants from producing certain proteins required for plant growth. Glyphosate inhibits a particular enzyme pathway, the shikimic acid pathway. Plants and some microorganisms require the shikimic acid pathway. Glyphosate is a phosphonic acid formed by the formal oxidative coupling of methylphosphonic acid's methyl group with glycine's amino group.
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Question 1 of 25
To maintain stable internal conditions, cells must get rid of waste. Which
statement best describes the role of the cell membrane in removing waste?
OA. Oxygen molecules move through a layer of phospholipids to exit
the cell.
OB. Active transport is used to force more sugar molecules into the
cell through protein pumps in order to clear the waste.
OC. The cell membrane surrounds waste material outside the cell,
forming a vesicle that the cell ingests.
O D. Carbon dioxide molecules pass freely through the cell membrane
to exit the cell by diffusion.
Answer:
the answer is D!!
yes it's correct
Juan received a class assignment to write about organisms that live in extreme environments. While doing research online, he found an image that showed microbial bodies thriving in hot springs. The organisms lacked a nucleus or defined organelles. Which organisms can he possibly find in such conditions
A.
plant-like protists
B.
animal-like protists
C.
fungus-like protists
D.
archaea
Reset Next
Pretest: Organization of Organisms
© 2022 Edmentum. All rights reserved.
The organism found to lack a nucleus or defined organelles that can possibly be found in such conditions is Archaea (option D).
What is Archaea?Archaea is a member of the kingdom Archaea known to be able to survive in extreme environmental conditions, hence, they are called extremophiles e.g. Archeaebacteria.
According to this question, Juan received a class assignment to write about organisms that live in extreme environments. However, while doing his research online, he found an image that showed microbial bodies thriving in hot springs. The organisms lacked a nucleus or defined organelles.
This suggests that the organism is prokaryotic and lives in an extreme condition, hence, will likely belong to the group of organisms called Archaea.
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Are the lighter elements found at the top or the bottom of the periodic table?
Answer:
Top
Explanation:
mass increases from left to right and from top to bottom.
so lighter ones are at the top
Select and describe a health problem that you believe has a genetic component at least partially inherited. If you do not identify an inherited health condition within your family, choose a disease that interests you or impacts a friend or other family member.
Not sure about your family health... but erm.. I can give you some examples of ones that might interest you!!
Single Gene Inheritance-individuals with an autosomal recessive single-gene disease inherit one mutant allele of the disease-associated gene from each of their parents.
Multifactorial Inheritance-Multifactorial inheritance is when more than 1 factor causes a trait or health problem, such as a birth defect or chronic illness.
Chromosome Abnormalities- a disorder characterized by a morphological or numerical alteration in single or multiple chromosomes, affecting autosomes, sex chromosomes, or both.
Mitochondrial Inheritance- the mitochondria contain their own DNA.
9. Why does it rain more in summer and less in winter in India?
Answer:
not just In India
Explanation:
the reason is that the Summer is more hot and warmer than the winter so the weather will evaporate and that's what cause the rain in the hot weather other than the winter which it already cold
Active transport requires energy and moves molecules from where there areless of them to where there are more of them.
(A) True
B False
Answer:
(B)False
Explanation:
active transport is the movment from a region of higher to a region o lower concentration
Which are the two types of Location?
There are two types of location-
Relative locationabsolute locationDefine relative location.A person or place's placement in respect to another object or location is referred to as their relative location. Cost, wait time, or distance all affect relative location. Map the distance between Salt Lake City, Utah, and the Computer History Museum, for instance, in California. The distance from the relevant position would be 767.7 miles, which would require a journey duration of 11 hours and 40 minutes.
Define absolute location.An accurate and precise point that pinpoints the precise location of a given object or area is known as an absolute location. Geographic coordinates, such as longitude and latitude, are frequently used to describe absolute positions. A specific object's precise location in reference to the prime meridian and the equator can be determined using geographic coordinates.
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In the Bee movie What happened to the flower shop when the bees stopped working and why?
Answer:it blewed up
Explanation:
kaboom
Answer:
the bees got a bunch of honey so they did not have to get any
Explanation:
The shape of a protein molecule is influenced by
Answer:
the amino acid
Explanation:
maybe this is the answer!!!
4. Carbon dating would work best on which of the following items?
Oan animal bone from 100,000 years ago
a stone tool from 2000 years ago
O a wood tool from 100 years ago
a neanderthal bone from 40,000 years ago
The carbon dating technique would only be best for a Neanderthal bone from 40,000 years ago.
What is carbon dating?
Organisms are known to exchange [tex]^{14} C[/tex] with their environment while they are alive. There are two types of carbon isotopes which are carbon 12 and carbon -14.
The carbon -14 is known to be radioactive. As such, the decay of the carbon - 14 isotope could be used to obtain the age of the sample of the radioactive sample.
Again, it is known that the limit of the accuracy of the carbon-14 system of dating technique lies around 50 000–60 000 years. It then follows that the carbon dating technique would only be best for a Neanderthal bone from 40,000 years ago.
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D Learning Task No.2: Use the GRESA Method in solving the problem below. Show your solutions. Write your answers in your notebook. 1. What is the mass of the cart with a constant net force of 200N is exerted to accelerate from rest to a velocity of 40m/s in 10 s. C. 50 kg D. 500 kg 2. A. 0.5 kg B. 5 kg What is the acceleration of a ball with a mass of 0.40 kg is hit with a force of 16N? A. 0.4 m/s² C. 400 m/s² D. 4000 m/s² B. 40 m/s² 3. What is the external net force exerted on a 3.5 kg papaya, which is being pushed across a table and has an acceleration of 2.2 m/s² to the left? A. 7.0N to the left C. 7.7N to the left B. 7.5N to the right D. 7.7N to the right 4. What is the mass of a crate with a net force of 300N and accelerate it by 0.750 m/s²? A. 0.4 kg B. 4 kg C. 40 kg D. 400 kg
GRESA method stands for given, required, equation, solution and answer.
We are required to solve the question according to the GRESA method. However, the question has multiple sub questions and hence we will solve each one of them separately.
Question 1:
Given:
Net force of 200N
initial velocity is 0 m/s
final velocity is 40 m/s
time is given to be 10 s
Required:
We are required to find the mass of the cart.
Equation:
By using Newton's second law of motion,
F= m x (v-u)/t
Solution:
By putting all the values, we get:
200N = m x ( 40 -0 ) / 10
m = 200 /4 = 50kg
Answer:
The weight of the cart is 50kg.
Hence option (c) 50kg is correct
QUESTION 2:
Given:
mass of ball = 0.4 kg
force of hitting = 16N
Required:
We are required to find the acceleration of the ball after hitting
Equation:
Using Newton's law of motion,
F = m x a
Solution:
By putting all the values, we get:
16 = 0.4 x a
a =16/0.4 = 40 m/s^2
Answer:
Hence option (B) 40 m/s^2 is the correct answer
QUESTION 3:
Given:
mass of papaya =3.5kg
acceleration of papaya = 2.2 m/s^2
Required:
We are required to find the net force applied
Equation:
Using Newton's law of motion,
F = m x a
Solution:
By putting all the values we get:
F = 3.5 x 2.2
=7.7 N
Answer:
The external force applied is 7.7 N to the left
Question 4:
Given:
net force = 300N
acceleration = 0.750 m/s^2
Required:
We are required to find the mass of the crate
Equation:
By using Newton's second law of motion,
F= m x a
Solution:
By putting all the values, we get:
300 = m x 0.750
m = 300/0.750
= 400kg
Answer:
Hence the weight of crate is 400kg
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The measurements of a wooden block are 2.5cm, 3cm, and 3.6cm the
volume is
Select one:
O a. 26.5 cm
O b. 26.5 cm3
O c.
27cm3
O d. 27 cm
The volume of the wooden block is 27 [tex]cm^3[/tex]
Volume of 3-dimensional objectsThe volume of an object is the amount of space delimited by the object.
For a three-dimensional object, the volume is derived by multiplying all the sides of the object.
In this case, the wooden block has 3 sides. This means it is a three-dimensional object.
Volume = length x breadth x height
The sides of the wooden block are 2.5 cm by 3 cm by 3.6 cm.
Volume of the wooden block = 2.5 x 3 x 3.6
= 27 [tex]cm^3[/tex]
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Carbonic anhydrase is a protein present in red blood cells. It catalyzes a reaction to convert carbon dioxide into carbonic acid and bicarbonate ions so that CO2 waste may be more easily removed from the body.
What role does this protein play in the body?
Carbon dioxide is converted to carbonic acid and bicarbonate ions with the help of the enzyme carbonic anhydrase found in red blood cells. The same enzyme aids in converting the bicarbonate ions back to carbon dioxide when red blood cells go to the lungs, where they are exhaled.
What is the action of carbonic anhydrase?In humans, the primary function of carbonic anhydrase is to catalyze the transformation of carbon dioxide into carbonic acid and back again. However, it can also aid in the blood's transportation of CO2, which benefits breathing. Even the stomach's production of hydrochloric acid can use it.
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Describe the two types of climate hypothesis that involve interactions between CO2 and weathering.
The two types of climate hypotheses that involve interactions between CO2 and weathering are as follows:
Over the years the volcanoes and mid-ocean ridges have been constantly casting carbon dioxide into the Earth's atmosphere. Despite this, the planet has stayed largely habitable. The primary cause for this is that carbon dioxide is also constantly drawn down from the atmosphere via chemical weathering reactions with the rocks at the surface. Weathering is the procedure by which carbon dioxide present in the atmosphere breaks down rocks and then gets entrapped in a deposition. It is an important part of Earth's carbon cycle, shuffling carbon dioxide between the atmospheric regions, and controlling global temperatures. By sealing carbon dioxide out in deposits, weathering extracts it from the atmosphere over extended timescales, decreasing the greenhouse effect and decreasing Earth's temperatures.To learn more about climate here
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What type of eye protection is required in a lab? a. Lab-grade goggles all the time for anyone working with chemicals b. Lab-grade goggles all the time for everyone c. Lab-grade goggles if you don’t wear glasses.
Are stem cells, from in vitro fertilization clinics, fetuses?
Early-stage embryos, a collection of cells that develops when eggs and sperm are fertilized in a laboratory setting, are used to harvest embryonic stem cells.
The body's building blocks are stem cells, which are cells that give rise to all other cells with specific roles. Daughter cells are created when stem cells divide properly in the body or a lab to create more cells.Many concerns and problems regarding the ethics of embryonic stem cell research have been brought up since human embryonic stem cells are taken from human embryos.The eggs utilized in embryonic stem cell research were fertilized in in vitro fertilization labs but were never placed in the uteruses of women. Donors of the stem cells give their informed consent before donating them. In test tubes or petri dishes in laboratories, the stem cells can survive and develop in particular solutions.
There are many controversies in the use of stem cells.
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What is the function of steroids/sterols to a cell.
A steroid is an organic molecule having four rings organized in a certain chemical configuration that is physiologically active. The two main biological roles of steroids are as signaling molecules and as critical elements of cell membranes that affect membrane fluidity. Numerous steroid species can be found in fungi, animals, and plants. Lanosterol (opisthokonts) or cycloartenol are the two sterols used to make all steroid compounds in cells (plants). Squalene, a triterpene, is cyclized to produce lanosterol and cycloartenol. The most known examples of steroids acting as signaling molecules are steroid hormones. Steroids and phospholipids are also parts of cell membranes. Cholesterol and other steroids make membranes less fluid.
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Based on the graph below, which enzyme would function the best in a humans stomach?
O Not enough information is provided to determine
O Blue
O Yellow
O Green
HELP ME ASAP 18. Why do animals in cold environments need a lot of lipids in their cells? ok
Answer:
As temperature increases, so does phospholipid bilayer fluidity. At lower temperatures, phospholipids in the bilayer do not have as much kinetic energy and they cluster together more closely, increasing intermolecular interactions and decreasing membrane fluidity.
Explanation:
When temperature decreases, the composition of membrane lipids (phospholipid fatty acids) is expected to become more unsaturated to be able to maintain homeoviscosity.
The endocrine system works closely with the _________
system to bring about homeostasis in the body.
O respiratory
O cardiovascular
O immune
O nervous
