Answer:
True
Short Answer-Denitrifying bacteria transform nitrate in extremely wet soils and swampy grounds where there is very little oxygen, i.e. the conditions are anaerobic. The bacteria get the oxygen they need for respiration from the breakdown of nitrates.
Explanation:
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Look at an ocean system below.
Phytoplankton
produce half of
the world's oxygen.
Shrimp feed on
plankton and also
need oxygen to live.
Salmon feed on
shrimp and need
oxygen to live.
People often eat
salmon. We also
need to breathe
oxygen to live.
What would most likely happen if the number of shrimp increased?
Answer:
The population of phytoplankton will decrease, hence, resulting in a drop in oxygen production.
Explanation:
This question shows the activities that take place in an ocean habitat. The question is a typical example of a food chain where organisms feed on one another in order to obtain energy.
According to the question, the feeding relationship among the organisms is as follows:
Phytoplankton → Shrimp → Salmon → Humans
Phytoplankton, in this question, is said to produce half of the oxygen used on Earth. Hence, if the population of shrimps increased, it means that the population of phytoplanktons would decrease because there would be more shrimps to feed on them. This decline in the plankton population will cause a reduction in the world oxygen production.
The photic zone Select one: a. has the most nutrients closer to land. b. is an area with sufficient light for photosynthesis. c. has an abundance of photosynthetic organisms. d. is very shallow. e. All of the answer choices are correct.
the answer for this would be E
The photic zone has the most nutrients closer to land, an area with sufficient light for photosynthesis, has an abundance of photosynthetic organisms, and is very shallow, Thus, the correct option for this question is E, i.e. all of the following.
Where is the photic zone present in the aquatic ecosystem?The photic zone present in the surface layer of the aquatic ecosystem significantly receives sunlight for photosynthesis. It is the topmost layer that receives sunlight. Hence, this zone is also known as the Sunlight zone.
According to the question, due to the sufficient availability of sunlight, this area performs a good rate of photosynthesis and occupies an abundance of photosynthetic organisms. Phytoplanktons are the characteristic members of this region. As this region has sufficient availability of light, the concentration of nutrients is highly rich.
Therefore, according to the photic zone, the correct option for this question is E, i.e. all of the following.
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Sickle cell anemia, a recessive deadly blood cell disease, is much more common in tropical climates because carriers (heterozygotes) are resistant to a deadly parasitic disease carried by mosquitoes (malaria). Given this information which of the following scenarios is a possibility?
A. The widespread availability of any drug that protects a population from malaria will have the side effect of reducing deaths from sickle cell anemia over many generations.
B. Having malaria will begin to give immunity to sickle cell anemia as well.
C. Populations in areas where there are fewer mosquitoes will have more and more sickle cell anemia as time goes on.
D. Genetie drift will always be so strong in these populations that none of this selection will be impactful, even for extremely large populations.
E. Over many generations the mosquitses must develop sickle cell anemia too.
Answer:
B. Having malaria will begin to give immunity to sickle cell anemia as well.
Explanation:
Malaria is one of the common disease caused by mosquitoes. It is believed that sickle cell disease gets deadly when malaria happens to the person. Sickle cell disorder is the reduction in healthy red blood cells which can carry oxygen throughout the body.
which of the following is a major determinant of the distribution pattern of a population?
1 social interactions
2 habitat area
3 rate of population growth
4 the ages of the individuals
Answer:
rate of population growth
there is 2 test tube containing
sodium chloride and sodium sulphate solution respectively suggest a method to know which is Sodium sulphur
Answer:
These two solutions react to form a white insoluble precipitate.
Explanation:
BaCl
2
+Na
2
SO
4
→2NaCl+BaSO
4
↓
This is a double displacement reaction as the two compounds exchange their ions to form two different compounds.
Sử dụng bacl2 để phân biệt
Locate each of the following general areas of your body as listed in the background by pointing to areas on your body in reference to body orientation terms. Become familiar with these terms so you can eventually recall their meanings without referring to the background.
a. Anterior
b. Caudal
c. Cephalic
d. Deep
Answer:
a. Anterior: Refers to the front of the body, which comprises the face and abdomen.
b. Caudal: Refers to the lower structures of the body, starting from the waist towards the foot.
c. Cephalic: Refers to the entire head region.
d. Deep: Refers to the inner core regions of the body, such as the bones within the muscle, the organs, among other internal structures.
Explanation:
The regions of the body presented above are very important for all health professionals, as it facilitates the study and understanding of the human body and the structures that make it up. In addition, the memorization of these terms allows health professionals to talk clearly about the injuries that patients have and the best way to treat them.
15. Assuming the fluorescence threshold is set to be 1. Which gene has the highest gene expression rate? What is the Ct value? Gene with highest expression = ______________ Ct value = _______________
Answer:
The correct answer is - Gene 1 and 14.5 (or 14).
Explanation:
The cycle threshold is denoted as Ct value. It is the cross point at the threshold line meets with fluorescence signal reaction curve. In the given RTpcr experiment, the threshold line is fluorescence intensity 1 thus, Ct value for each gene will be the point at which each curve meets the fluorescence intensity line at 1. Ct value of is inversely proportional to amount of nucleic acid in the given sample.
Here, the Ct for gene 1 is the lowest, so the amount of DNA would be highest.
Gene with highest expression= Gene 1
Ct value= 14.5
Lainey is looking for a new apartment and her realtor keeps calling her with new listings. The calls only take a few minutes, but a few minutes here and there are really starting to add up. She's having trouble concentrating on her work. What should Lainey do? a) Tell her realtor she can only receive text messages O b) Limit the time spent on each call O c) Turn off her phone until she is on a break O di Call her realtor back when customers won't see her on the phone
Answer:
c) Turn off her phone until she is on a break
Explanation:
If she does option "a" then her phone will still keep ringing with text message alerts. Option " b" will still be consuming her work time and option "d" can't be because it'll be too late by then so only option c makes sense.
what is fermentation process?
Answer:
Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes. In biochemistry, it is narrowly defined as the extraction of energy from carbohydrates in the absence of oxygen.
Explanation:
I hope it will help you
Answer:
Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes through chemical breakdown of a substance by bacteria, yeasts, or other microorganisms,
Explanation:
Have a nice day
State whether the following statements are true or False. Hormones in plants travel by the vascular bundle.
Answer:
True
Explanation:
In plants, hormones travel large throughout the body via the vascular tissue (xylem and phloem) and cell-to-cell via plasmodesmata. In contrast, many animal hormones are produced only in specific glands. Plants do not have specialized hormone-producing glands.
Eukaryotes are different than Prokaryotes, because only eukaryotes have:
A. DNA
B. Capsule
C. Organelles
D. Plasma membrane
Answer:
D
Explanation:
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Eukaryotes are different from prokaryotes because only eukaryotes have Organelles. The correct option is C.
What are prokaryotes?Prokaryotes are primitive organism that is single-celled and their cell contains a capsule and flagella or cilia for locomotion and finding food. These organisms lack true organelles.
Eukaryotes are organisms that can be single-celled or multi-celled. They contain the true nucleus and organelle in the cell and the cell is covered with a cell membrane and a nucleus is present that contains the DNA or the organism.
Prokaryotic and eukaryotic cells, both contain DNA, a plasma membrane. But in prokaryotes, an organelle is absent, and they are covered by a capsule.
Thus, the correct option is C. Organelles.
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What is the types of atmosphere
Answer:
From order to closest to farthest:
Troposphere, stratosphere, mesosphere and thermosphere. Exosphere as well, if you wish.
Explanation:
Not much to explain here. They are separated by temperatures.
Which of the following factors would LIMIT carrying capacity?
A. Far from factories or roads
B. A large nearby river
C. Abundant food
D. A small space to live in
Answer:
D. A small space to live in
Explanation:
Having a small space to live in would directly limit carrying capacity.
Since there is a small space, only a few organisms would be able to live in that space.
This means that carrying capacity is limited, because the space does not have enough room to sustain more people.
So, the correct answer is D. A small space to live in
Which life process is vital for the survival of all organisms
Answer:
oxygen
Explanation:
A solid form of precipitation is _____________.
Answer:
precipitate
Explanation:
the examples would be; evaporation, snow, hail, or clouds.
functions of insulin
Answer:
Insulin helps control blood glucose levels by signaling the liver and muscle and fat cells to take in glucose from the blood. Insulin therefore helps cells to take in glucose to be used for energy. If the body has sufficient energy, insulin signals the liver to take up glucose and store it as glycogen.
Explanation:
What is the function of catalysts?
Answer:
Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. Enzymes are proteins that act as catalysts in biochemical reactions.
Answer:
The Main Function of Catalyst is to alter the rate of reaction without getting consumed in it.
Explanation:
Catalyst also reduces the Activation Energy of the Chemical Reaction.
The endogenous cholesterol synthesis by the liver that we need to function normally it can lead to
plaque formation within the blood vessels.
Оа.
False
b. True
Answer:
It should be true
Explanation:
online health class and quick double check
Which part of plant carries water and minerals from roots to other parts of the plant
Answer: The xylem distributes water and dissolved minerals upward through the plant, from the roots to the leaves. The phloem carries food downward from the leaves to the roots. Xylem cells constitute the major part of a mature woody stem or root.
Outline an experimental approach to determining the average chain growth rate for transcription in vivo. Chain growth rate is the number of nucleotides polymerized per minute per RNA chain. Fill in the blanks.
Label a growing bacterial or cell culture for a brief interval with a mixture of 14C-labeled nucleosides, which would be converted to nucleotides and incorporated into _____. Isolate total ______and subject it to hydrolysis with mild _____. Every _____-terminal nucleotide will be released as a nucleoside. Separate nucleosides from nucleotides, by ______. Total picomoles of nucleotide in the hydrolysate divided by total picomoles of nucleoside gives the number of nucleotides incorporated per _______chain-which, when divided by the labeling interval (minutes) gives the growth rate of individual chains (nucleotides incorporated per ______ chain per minute). An interesting variant of the experiment would be to carry it out with individual radiolabeled nucleosides and ask whether the chain ______is the same for each nucleotide.
Answer:
DNA
Protein
temperature
nerve
esterification of inorganic phosphate to C5 on aldose.
nucleic acid polymer
growth rate
Explanation:
Nucleosides have nitrogen base surrounded by 5 carbon carbohydrates which is called as ribose molecule. Nucleotides is simply a nucleoside with one or more phosphate group. There are 4 different types of nucleosides which are, adenosine, guanosine cytidine, and uridine. Nucleotides are formed from nucleosides by esterification of inorganic phosphate on aldose.
Khi glycine gắn vào repressor và làm cho repressor gắn vào NST tế bào vi khuẩn, đưa tới kết quả:
a/ Ngừng sự sinh tổng hợp glycine
b/ Ức chế tế bào vi khuẩn phân chia
c/ Phân hủy glycine
d/ Tạo ra protein repressor
Answer:
b
Explanation:
ATP is considered as nature dehydrating agent.what does it means?show with the help of examples
Answer:
that man is mental
Neurons are classified functionally according to the direction the ____________ travels relative to the ____________ . Afferent neurons are the neurons of the sensory nervous system. They are responsible for conducting ____________ input from both somatic sensory and visceral sensory receptors. Most sensory neurons are ____________ . Efferent neurons are the neurons of the motor nervous system, conducting ____________ output from the CNS to the effectors. All motor neurons are ____________ . Interneurons (or ____________ neurons) lie entirely within the CNS. They receive stimulation from many other neurons and carry out the integrative function of the nervous system. The most numerous types of neurons are ____________ .
Answer:
Based on their roles, the neurons found in the human nervous system can be divided into three classes: sensory neurons, motor neurons, and interneurons.
Explanation:
Neurons are classified functionally according to their direction. The nerve impulse travels relative to the receiving neuron.
What do you mean by Neurons?Neurons may be defined as nerve cells that are responsible for the transmission of signals from the body to the brain.
Afferent neurons are the neurons of the sensory nervous system. They are responsible for conducting nerve impulse input from both somatic sensory and visceral sensory receptors. Most sensory neurons are afferent neurons.
Efferent neurons are the neurons of the motor nervous system, conducting nerve impulse output from the central nervous system to the effectors. All motor neurons are efferent neurons.
Interneurons or associated neurons lie entirely within the central nervous system. They receive stimulation from many other neurons and carry out the integrative function of the nervous system. The most numerous types of neurons are interneurons.
Therefore, it is well described above.
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Methylation _________of the transcriptional unit results in a __________reduction in luciferase expression, whereas methylation ________the unit causes a ________reduction in expression. The effect of methylation of the transcriptional unit may be_________ by methylation outside the unit.
A. enhanced
B. within
c. reduced
d. drastic small outside
Answer:mình nghĩ là D
Explanation:
explain how the tissue of the esophagus and tissue of the trachea can be differentiate
Answer:
Trachea: It is the wind pipe — making it a part of the respiratory system
Esophagus: It is the food pipe — making it a part of the digestive system
Trachea: It is shorter, 10–11 centimeters. It connects upper airway to the lungs
Esophagus: It is longer, 25 centimeters. It connects mouth to the stomach
Trachea: It is cartilaginous, made of C-shaped semicircular cartilages. They give it structural stability and prevents it from collapsing
Esophagus: It is muscular. It contracts in a wave-like motion through it’s length to propel food from mouth to stomach a.k.a swallowing
Trachea: It’s opening is protected by Epiglottis, a flap like structure, to prevent food from accidental entering the air passage. It prevents choking
Esophagus: It’s opening is protected by two sphincters. They are muscular rings that constrict to close the esophagus off when food is not being swallowed.
Trachea: It has 2 portions — cervical and thoracic i.e. neck and chest portions.
Esophagus: It has 3 portions — cervical, thoracic and abdominal i.e. neck, chest and stomach portions.
What is the correct order of amino acid if the sequence of bases on DNA were as follows: C-C-T-C-G-A-T-T-C-A-T-G
glycine, alanine, lysine, tyrosine
2)
alanine, proline, lysine, tyrosine
3)
valine, aspartate, glycine, proline
4)
aspartate, glycine, serine, valine
Answer:
it should be G-G-A-G-C-T-A-A-G-T-G-C
Explanation:
A=T
C=G
think of them as opposites. invert them and you'll have the answer (its easier if you write the answer right underneath)
The amino acid sequence should be G-G-A-G-C-T-A-A-G-T-G-C
G-G-A: glycine
G-C-T: alanine
A-A-G: lysine
T-G-C: tyrosine
What are amino acids?
Amino acids are molecules that combine to form proteins. Amino acids and proteins are the building blocks of life.
The nucleotide triplet that encodes an amino acid is called a codon. Each group of three nucleotides encodes one amino acid. There are 64 combinations of 4 nucleotides taken three at a time and only 20 amino acids, the code is degenerate (more than one codon per amino acid, in most cases).
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A patient who should be routinely evaluated for peptic ulcer disease is one who is
Answer:
WHAT EXACTLY YOU WANT TO ASK?
Explanation:
5x_=1 jdjdjcjdjdjjdkd
Answer:
what...
Explanation:
Please use the following information to answer the questions below. The southern grasshopper mouse feeds regularly on the Arizona bark scorpion, the most venomous scorpion in the United States. While attempting to capture the scorpion, the mouse usually gets stung multiple times by the scorpion but does not seem to be affected. While attempting to capture the scorpion, the mouse's heart rate increases, and there is an increase in epinephrine in the mouse's blood. What nervous system division is responsible for the mouse's physiological state
The sympathetic nervous system is responsible for the mouse's physiological state.
The nervous system divides into the central nervous system and peripheral nervous system.
In the central nervous system, we have the brain and the spinal cord.
The peripherical nervous system, which is all the nerves that are not in the spinal cord or the brain, is divided into:
The somatic nervous system, which is the one that makes the conscious movements of our body.The autonomic nervous system consists of:-Sympathetic nervous system. It is the one that works under stress. It gives the fight or flight response preparing the body for a dangerous situation. It increases the heart rate and epinephrine's release. Epinephrine is a hormone that helps in this response stimulating the sympathetic system.
-Parasympathetic nervous system. It is the one that works in calm situations, like after we ate, regulating digestion, and trying to save energy for any upcoming event.
In conclusion, as there is an increase in epinephrine and heart rate, and the mouse is "fighting" against a scorpion, the nervous system division responsible for this physiological state is the sympathetic nervous system.
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what are microorganisms? write the living and non living characteristics of virus.
Answer:
In easy word ......the virus or organism that can only be seen through Microsoft is called microorganisms
Explanation:
Those organisms which cannot be seen under naked eyes and require microscope to be seen are called micro-organisms.
The main living character of the viruses is they contain DNA or RNA as the genetic material. The main non-living character of the viruses is they can be crystallized like other chemicals
Hope ,this helps you!
