Answer:
builder A
Explanation:
got it right
Answer:
Builder A
Explanation:
On quizlet
A. The capture/mark recapture method was used to give an accurate
estimate of the rhinoceros beetle population in the Western province. Traps
were set up and captured beetles were painted light brown as oppose to red an
yellow. All captured-recaptured were counted and recorded.
Total count
in
Total marked
Total counts
in
Total marked
40
40
15
35
Use the Lincoln Index to calculate the total beetle population?
where they execute important functions. The polypeptide chain of these proteins must cross the lipid bilayer. This presents a problem because the peptide bond is polar in nature. It turns out that in virtually all cases where an amino acid chain crosses a lipid bilayer it does so as an alpha helix. Suggest a reason why this is the case. (5 points)
Answer:
In this case, it is likely that the polypeptide chain assumed an alpha helix configuration because the lipid bilayer did not have beta-barrel proteins.
Explanation:
A polypeptide chain is naturally polar, however, a lipid bilayer is naturally non-polar. This makes it difficult and even prevents the polypeptide chain from crossing a lipid bilayer, since the composition of these two elements does not allow them to mix. In that case, the polypeptide chain has two options to take to successfully cross the lipid bilayer.
The first option that the polypeptide chain has is to allow the creation of twisted beta sheets in the shape of a closed barrel in its structure. This only works if the lipid bilayer has beta barrel proteins in its composition to act as a transport channel for the polypeptide chain. However, few lipid layers have this protein.
Most likely, the polypeptide chain assumes an alpha helix conformation to cross lipid bilayers that do not have beta-barrel proteins. By assuming the beta conformation, the polypeptide chain reinforces the hydrogen bonds present in its composition, allowing it to cross the lipid bilayer without having its conformation and structure disassembled.
Help please thank youu.
Which of the following is a way that nitrogen atoms move from a nonliving part of the environment into a living part of the environment?
Answer:
person below is correct
Explanation:
Answer:
Nitrogen Cycle
Explanation:
nitrogen moves through the living and non-living environments with the help of decomposers and nitrogen-fixing bacteria
!!FOR PLANT SYSTEMS!!
Given the loss of farming jobs projected in the near future, distinguish at least two factors in a decision one might make to enter the field.
i cant process this lol no matter how much tiems read it
Answer:
this is the suggested answer
Explanation:
A correct answer will discuss two factors from among the following: one factor is despite the projected loss in farming jobs, these jobs are still essential and may still provide for a lucrative and successful career given that the median income level that is significantly higher than the national average. Another factor is the wide variety of careers in this general field, so the information on declining career outlook could be misleading, depending what specific career one is looking into. Another factor is the several training programs available to benefit those looking to enter this field, which can contribute to success.
help me plz
Living organisms are classified in different ways. Cells can help determine an organism's classification. Describe how an organism with plant cells might be classified differently than an organism with animal cells.
Explanation:
A plant cell consists of one large vacuole that maintains the shape of the cell and stores nutrients. Animal cells, on the other hand, have multiple smaller vacuoles. Both plant and animal cells have a cell membrane, but only the former has a cell wall.
The activity of the pyruvate dehydrogenase complex is also controlled by phosphorylation. Pyruvate dehydrogenase kinase (PDH kinase) catalyzes the phosphorylation of a specific Ser residue on the E1 subunit of the enzyme, rendering it inactive. Pyruvate dehydrogenase phosphatase (PDH phosphatase) reverses the inhibition by catalyzing the removal of this phosphate group. The PDH kinase is highly regulated and its activity is influenced by various cellular metabolites. Indicate whether the following would activate or inhibit PDH kinase:
Inhibit or activate PDK?
NAD+ activate
NADH inhibit
coenzyme A activate
acetyl-CoA inhibit
ADP inhibit
Did I answer these correctly?
Answer:
Increase in [NAD+] inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Increase in [NADH] activates Pyruvate dehydrogenase kinase (PDH kinase)
Coenzyme A inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Acetyl-co A activates Pyruvate dehydrogenase kinase (PDH kinase)
ADP inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Explanation:
Pyruvate dehydrogenase kinase, PDK is an enzyme which acts to inhibit the activity of the enzyme pyruvate dehydrogenase by phosphorylating it using ATP. It mechanism of action is by catalyzing the phosphorylation of a specific Ser residue on the E1 subunit of the pyruvate dehydrogenase complex, rendering it inactive. By inhibiting the activity of the pyruvate dehydrogenase complex, PDK will decrease the oxidation of pyruvate to acpcetyl-coA and CO₂ in the mitochondria and increase the conversion of pyruvate to lactate in the cytosol.
Since pyruvate dehydrogenase complex is activated by either an increase in the concentration of one or more of ADP, NAD+ or CoA-SH, its inhibitor pyruvate dehydrogenase kinase is inhibited by ADP, NAD+, CoA-SH and pyruvate. However, PDK is activated by increase in the concentration of ATP, NADH and acetyl-CoA.
Therefore, the correct answers are:
Increase in [NAD+] inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Increase in [NADH] activates Pyruvate dehydrogenase kinase (PDH kinase)
Coenzyme A inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Acetyl-co A activates Pyruvate dehydrogenase kinase (PDH kinase)
ADP inhibits Pyruvate dehydrogenase kinase (PDH kinase)
Group the following into the appropriate range of measurement.
a. atomic
b. ultramicroscopic
c. microscopic
d. macroscopic
Match each of the options above to the items below.
1. roundworm, algae
2. protozoan, rickettsia
3. herpesvirus, DNA
4. hydrogen atom, glucose molecule
Answer:
Hydrogen atom & glucose molecule --- atomic.
Herpesvirus, DNA --- ultramicroscopic.
Protozoan, Rickettsia - microscopic.
Roundworm and algae --- macroscopic
Explanation:
1) Hydrogen atom & glucose molecule --- atomic.
The atomic size level, which interacts with atoms as well as small molecules, is much lower than the ultramicroscopic range.
2) Herpesvirus, DNA --- ultramicroscopic.
Ultramicroscopic particles are very tiny structures that cannot be seen using a conventional optical microscope, necessitating the use of an electron microscope. Viruses and DNA falls into this group since they are much smaller than tiny species like bacteria.
3) Protozoan, Rickettsia - microscopic.
Microscopic species are much smaller than macroscopic organisms because they cannot be observed by the naked human eye and must be viewed through a microscope. The size range for microscopic particles is [tex]( 10^3 \ \ to \ \ 10^{10})[/tex], which contains protozoans and Rickettsia (a gram-negative, non-motile bacteria genus).
4) Roundworm and algae --- macroscopic
Naked eyes can see macroscopic organisms; for example, several types of circular worms and algae can be seen by them.
Anything that elicits an immune response is called a
Answer: antigen. brainliest?
Explanation:
Help me please!!!!!!!!!!!!!!!!!
Explanation:
B one is the correct answer
Answer:
I think it's X
Explanation:
Match the bacterial type with its proper definition. An answer choice can only be used once. A. Requires oxygen, but is toxic at atmospheric concentrations B. Can use oxygen for growth or can grow without it C. In fluid thitoglycollate medium, shows growth only at the top area of the medium D. Oxygen is completely toxic to it A. microaerophile B. facultative anaerobe C. obligate aerobe D. obligate anaerobe E. aerotolerant anaerobe
Answer:
ABCDExplanation:
Bacteria is classified into 5 different groups basically on their shapes which are spherical, rod, spiral, vibrios and corkscrew
A) Requires oxygen, but is toxic at atmospheric concentrations
Microaerophile
B) Can use oxygen for growth or can grow without it
Facultative anaerobe
C) In fluid thitoglycollate medium, shows growth only at the top area of the medium
Obligate aerobe
D) Oxygen is completely toxic to it
Obligate anaerobe
A 66-year-old man has difficulty controlling voluntary movements. He can clearly state what he intends to do, describe how he would do it, and initiate or stop the movement. However, he has poor coordination and often misses his target. If his difficulty arises from a defect in one particular area of the central nervous system, which area is most likely to be involved
Answer:
Cerebrum
Explanation:
Cerebrum is the part of central nervous system that is responsible for the voluntary movement. If there is poor coordination between cerebrum and the muscles so the person has difficulty in controlling his voluntary actions or movement. Somatic nervous system is a part of the peripheral nervous system responsible for the voluntary movements of body parts through the use of skeletal muscles so we can say that both cerebrum and somatic nervous system is responsible for voluntary actions.
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
Look at the Density of substances table. Why would the other substances not mentioned in the previous answer not be buoyant in pure water?
A. they are metals
B. they are denser than pure water.
C. diamonds are clear
What is the name of the gland located above each kidney?
o thyroid gland
O
pancreas
pituitary gland
o adrenal gland
Answer:
It's the thyroid
Explanation:
I took the test
A pyramid of biomass shows the mass of all of the organisms in each trophic level of an ecosystem. Look at the biomass pyramid to the right. Based on the data shown, how many kilograms of plant matter would be needed to support the other trophic levels in this ecosystem?
Answer:
90,000
Explanation:
A pyramid of biomass shows the mass of all of the organisms in each trophic level of an ecosystem. From the biomass pyramid to the upright ladder, the kilograms of plant matter needed to support the other tropic levels in this ecosystem is 9000 kg.
In ecology, the biomass pyramid is a graphical representation designed to show the quantity of biological or organic matter observed in an organism.
The ecological biomass pyramid starts with the primary producer which is usually a green plant.
Followed by the herbivores(animals that feed) on the green plants. They are the primary consumers. The carnivores are secondary consumers that feed on herbivores. Then the peak of the pyramid is the tertiary consumers which are called omnivores. (i.e animals that feed on plants & animals).The amount of mass consumed by the primary consumer is equivalent to the total amount of mass in the primary consumer. However, as we go up the pyramid, the mass depreciates.
Therefore, we can conclude that the amount of kilograms of plant matter needed to support the other tropic levels in this ecosystem is 9000 kg.
Learn more about Biomass here:
https://brainly.com/question/20572728?referrer=searchResults
Even though chestnuts can regrow from their roots, this does not usually happen because
there are few root systems left in the forest.
chestnuts grow in regions prone to fires.
most forestry professionals no longer want to grow chestnuts.
new growth is stricken with the blight before it has the chance to mature.
Answer: New growth is stricken with the blight before it has the chance to mature.
Explanation:
American Chestnut trees can indeed regrow from their roots but due to the devastating effect of the chestnut blight, they have been unable to do this since the blight spread across the country.
The blight was introduced when Chinese chestnut trees were imported into the U.S. in the 20th century. It killed off most of the chestnut trees in the U.S. and attacks the tree again when it grows to around 6 meters bringing it down to its roots. This is why the American Chestnut is considered endangered.
Answer:
d
Explanation:
took the test
I will do Brainliest If this is quick and right. (I will figure out brainliest ive never done it before)
epithelial stomach cell>stomach lining tissue>stomach>disgestive system
The kinetic energy of a moving object depends on its mass and its
a. volume.
b. velocity
c. distance.
d. acceleration
Answer:
Your answer is B. Velocity
Every organism needs energy to survive. A process in which oxygen is combined with the
breakdown of sugar (glucose) molecules, releasing energy and giving off carbon dioxide and
water, is known as which of the following reactions?
a. Transpiration
b. Cellular Respiration
C. Carbon Fixation
d. Photosynthesis
The gastrointestinal tract is absent in
Why do males determine the sex of the offspring in humans?
1
they have testosterone
they have two different sex chromosomes
they have no sex chromosomes
males do not determine the sex of offspring in humans
o they have two of the same sex chromosomes
Answer:
males do not determine the sex of offspring
Explanation:
this question lacks intellectual merit on multiple levels of analysis
Given that cellular respiration uses oxygen and produces carbon dioxide, which of the following statements can be inferred from the diagram shown above?
A. Animals participate in cellular respiration, while plants participate in both cellular respiration and photosynthesis.
B. Animals do not rely on plants for survival.
C. Animals participate in cellular respiration because it results in the same products as photosynthesis.
D. Animals participate in cellular respiration, while plants do not.
Answer:
A. Animals participate in cellular respiration, while plants participate in both cellular respiration and photosynthesis.
Explanation:
The option (A) is correct. Animals participate in cellular respiration, while plants participate in both cellular respiration and photosynthesis.
What do you mean by cellular respiration?Cellular respiration is the process by which biological fuels are oxidized in the presence of an inorganic electron acceptor such as oxygen to produce large amounts of energy, to drive the bulk production of ATP.
Cellular respiration is a series of chemical reactions that break down glucose to produce ATP, which may be used as energy to power many reactions throughout the body. There are three main steps of cellular respiration: glycolysis, the citric acid cycle, and oxidative phosphorylation.
During cellular respiration, a glucose molecule is gradually broken down into carbon dioxide and water. Along the way, some ATP is produced directly in the reactions that transform glucose. Much more ATP, however, is produced later in a process called oxidative phosphorylation.
Learn more about cellular respiration:
https://brainly.ph/question/8577610
#SPJ2
What is the answer for this
Answer:
B
Explanation:
don't trust me, this is an inference that doesn't seem very reliable.
How do community contribute in maintaning the health of ecosystem??
Answer:
THE MATEMÁTICAS 163 por eso
What does the slope of a distance-time graph represent?
The
Answer:
it represents the speed of moving
Explanation:
A sloping line on a distance-time graph shows that the object is moving. In a distance-time graph, the slope or gradient of the line is equal to the speed of the object
Which of the following metabolic pathways does NOT directly produce lots of ATP (also called anaerobic cycle)?
A. Glycolysis
B. Krebs cycle
C. Citric acid cycle
D. Electron transport chain
Answer:
A. Glycolysis
Explanation:
Glycolysis is the first stage of cellular respiration, which occurs in the cytoplasm of the cell. Glycolysis does not require oxygen to occur, hence, it is carried out by both prokaryotic and eukaryotic organism.
Glycolysis, among the other stages of cellular respiration, produces the least ATP (2). Hence, Glycolysis is the metabolic pathway that does NOT directly produce lots of ATP.
one of these is wrong but I don’t know which one can someone please help me
WILL GIVE BRAINLINESS PLEASE HELP SO I WONT FAIL
Choose one of the following scenarios and answer the questions provided. Support your answers using scientific reasoning and discussing possible impacts to individuals, society, and the environment. Be sure to also discuss any medical or ethical issues that may apply. (10 points)
Scenario 1:
Genetic engineering can be used to create more productive strains of farm animals. By adding genes to an animal's DNA, the animal can be made to produce milk or meat containing vital nutrients that would not be found naturally in those products. This provides a greater amount of nutrients per serving of milk or meat.
Do you think that this type of genetic engineering should be pursued? Explain your answer. (5 points)
What are some possible impacts (positive and negative) of this type of genetic engineering on individuals, society, and the environment? (5 points)
Scenario 2:
In the future, doctors may be able to evaluate your DNA to check for genetic markers related to specific medical conditions or harmful reactions to medications. Your personalized genetic profile could be kept on record and referred to in order to develop personal medical treatment based on your unique DNA sequencing. Scientists have found that just small variations in a specific section of your DNA can help determine how well some medications can work for you or if they would be beneficial at all.
Would you want to have your DNA profile kept in your medical record as a reference for your doctors? Explain your answer. (2 points)
What are potential pros and cons of having such tests done and referring to DNA sequences when determining a patient's medical treatment? (5 points)
Describe how the availability of this technology might affect the frequency of genetic diseases in individuals and populations. (3 points)
What does inflammation lead to allow white blood cells to find the
infection and the release of cytokines?
What year did the first "Earth Day" occur?
Please help
Answer:
April 22, 1970 was the 1st earth day
Answer:
in spring 1970
Explanation:
because of this one person named Gaylord Nelson
A farmer grows wheat near a river. He frequently uses
fertilizer on his fields, and when he waters the fields,
excess water runs off into the river.
What should the farmer be most careful to monitor to determine his farm's
impact on water quality?
A. Type of fish in the river
B. Amount of water in the farm's soil
C. pH of rainwater falling on the farm
D. Level of nitrates in runoff water
Answer: I think its B
Explanation: I hope this helps :)
Answer:
D. Level of nitrates in runoff water
Explanation:
Took the test too :)