Answer:
The reason is because detritivores and decomposers and omnivores are multilevel food chain consumers in an ecosystem making them not qualified to be assigned to a given trophic level
Explanation:
An organism is placed in a trophic level based the level it is from where the food chain starts with the start of the food chain having a level of 1 for the food producers such including plants and algae
Level 2 organisms are called primary consumers and consists of organism that eat only plants known as herbivores such as cattle
Level 3 organisms are called secondary consumers and consists of animal eating organism known as carnivores such as foxes etc.
Level 4 organisms are called tertiary consumers
Level 5 organisms are the a p e x p r e d a t o r s
Detritivores and decomposers such as bacteria, earthworm flies fungi consume the wastes produced at all trophic levels, therefore they cannot be assigned to a particular trophic level
Similarly, omnivores consumes both plants at level 2 and animals at level 3 making it ambiguous to assign them to one particular trophic level.
Consider an experiment where you digest a DNA molecule with restriction enzyme BclI. You resolve the products of the digest by gel electrophoresis. Then, you cut out each of the resulting two bands from the gel and sequence the DNA. The sequencing results return two DNA segments.
Segment 1
5′ CCGCGGT 3′
3′ GGCGCCACTAG 5′
Segment 2
5′ GATCAGGATCC 3′
3′ TCCTAGG 5′
1. What is the sequence of the BclI recognition site?
2. What type of ends do the products have?
Answer:
This BclI restriction enzyme recognizes and cut at T / CTAG nucleotide sequences.
Explanation:
5′ CCGCGGT 3′
3′ GGCGCCACTAG 5′
Segment 2
5′ GATCAGGATCC 3′
3′ TCCTAGG 5′
The BclI enzyme generates sticky ends, it means that the enzyme recognises and cuts nucleotide sequences without complementary bases, which also have weak hydrogen bonds. The sticky ends are then generated when an enzyme produces unpaired nucleotide ends. Nonetheless, restriction enzymes generally produce blunt ends, i.e., both strands cut at the same site.
You are doing an experiment and plated E. coliin different medias. Media A has onlyglucose, B has only lactose, and media C has both glucose and lactose.You notice that some of the cultures grown in media C are metabolizinglactose. Which type(s) of mutation(s) could cause this to occur
Answer:
A. Glucose:
As lactose is absent will follow the glucose metabolism, so the lac repressor will hold tightly with the operator which leads to the prevention of transcription as RNA polymerase can not bind to promoter so no lactose metabolism.
B. lactose:
In the case or wild mutant lactose metabolism will occur as lactose is present, allolactose binds to the lac repressor thus the operator and promoter are free so transcription starts. The same result will be in all test except in the case of a mutant repressor.
C. glucose and lactose:
In this case, diauxic growth will occur. This growth takes place when two sugars are present in the media. The preferred sugar will be consumed first That is glucose. Then a lag phase will come which will be followed by the second sugar metabolism that is lactose. the given two cases :
Lactose will be metabolized first, as operator site mutation prevents repressor protein binding and thus will lead to the constitutive synthesis of lac operon in test B. The same thing will happen, as in this case also, constitutive synthesis of lac operon will happen in test C.
Cultures grown in the presence of both glucose and lactose are metabolizing lactose. In the test (b) and (c) will be responsible due to constitutive synthesis of lac operon will happen.
. Why did Jim decide to move his lab to New York? a) he wanted to be near where the trials were occurring b) he wanted to be closer to his family c) the pharmaceutical company demanded it
Answer:
a) he wanted to be near where the trials were occurring
Explanation:
hope it helps .
what is the job of the stomach, large intenstine, small intestine 60 points!!
Answer:
Stomach - The stomach is a hollow organ, or "container," that holds food while it is being mixed with stomach enzymes.
Large Intestine - The large intestine absorbs water and electrolytes, and produces and absorbs vitamins. It forms and propells feces toward the rectum for elimination.
Small Intestine - The small intestine breaks down food coming from the stomach and absorbs the nutrients from the food.
This solid layer is found between the inner mantle (mesosphere) and the lithosphere.
O A. crust
B. asthenosphere
C. inner core
O D. outer core
Answer:
The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . The asthenosphere is the part of the mantle that flows and moves the plates of the Earth.
Explanation:
1. Which of the following best identifies base 1?
-
Cytosine
Purine
Pyrimidine
Nucleotide
Answer:
Purine
Explanation:
A base is part of a nucleotide so that eliminates choice D. Pyrimidine and Cytosine only have 1 base, Purine is the only one with two, therefore Purine is the answer.
~~9. Using the appropriate osmotic terms (hypertonic, hypotonic, or isotonic) describe what would happen to each organism in the following settings: on. A single-celled freshwater protist is placed into a beaker of salt water. (3 points) b. A salt-water snail is mistakenly put into a freshwater tank. (3 points) c. A head of lettuce is placed soaked in a sink of salt water. (3 points) d. A bunch of carrots are placed soaked a sink of distilled water. (3 points)
Answer:hh
Explanation:hhh
Cells must maintain an appropriate level of fluidity across their membranes. Hot temperatures lead to greater membrane fluidity. What might you then expect to find regarding the membrane composition of bacteria from very hot environments
Answer:
Thermophilic bacterial are rich in large quantity of thermophilic lipids in the cell membranes. This components made the membrane to be impermeable at high temperature, and therefore a good adaptation for the hot environment.
At high temperature,proton permeability increase, sodium permeability also increases but to a ;lesser extent, but Lipid is independent of this temperature rise.
Hence, these organisms rely on the less permeable Na+ for the maintenance of high sodium motive force.it is the energy derived from this that the cell membrane needs to maintain stability, coupe with the lipid content.
Explanation:
who first recognized the cell as the universal unit of life
Answer: Virchow van Leeuwenhoek
Explanation:
Answer these questions based on what you learned from the lesson.
are a relatively small group of bacteria that thrive in extreme conditions.
vare a diverse group of bacteria that sometimes make us sick.
Eubacteria are classified by
are round bacterial cells.
are rod-shaped bacterial cells.
are spiral-shaped bacterial cells.
DONE
Intro
The answers for the question are :
ArchaebacteriaEubacteriaShapeCocciBacilliSpirillaBacteriaBacteria are little single-celled living beings. Microscopic organisms are found nearly all over on Soil and are imperative to the planet's biological systems.
Archaebacteria - are a relatively small group of bacteria that thrive in extreme conditionsEubacteria - are a diverse group of bacteria that sometimes make us sick.Eubacteria are classified by Shape. Cocci -are round bacterial cells. Bacilli - are rod-shaped bacterial cells. Spirilla -are spiral-shaped bacterial cells.Learn more about "Bacteria":
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The answers for the given question should be
Archaebacteria
Eubacteria
Shape
Cocci
Bacilli
Spirilla
What is Bacteria?It is considered as the little single-celled living beings. Microscopic organisms should be found nearly all over on Soil and are considered to be imperative with respect to to the planet's biological systems.
Now
Archaebacteria - should be small group of bacteria
Eubacteria - should be diverse group of bacteria t
Eubacteria should be classified by Shape.
Cocci - should be round bacterial cells.
Bacilli - should be rod-shaped bacterial cells.
Spirilla -should be spiral-shaped bacterial cells.
Learn more about bacteria here: https://brainly.com/question/16568397
Are tanning beds safe?
Answer:
Tanning beds are NOT safer than the sun.
Explanation:
Science tells us that there's no such thing as a safe tanning bed, tanning booth, or sun lamp. Just one indoor tanning session can increase the risk of developing skin cancer (melanoma by 20%, squamous cell carcinoma by 67%, and basal cell carcinoma by 29%).
supplies the diaphragm
Answer:
what?.................
Answer:
phrenic nerve.
Explanation:
Inferior phrenic arteries are closely related to the diaphragm and give off a few branches to supply it. They are the main source of vascular supply to the diaphragm. The left inferior phrenic artery ascends toward the left diaphragmatic crus associated with the inferior surface of the diaphragm.
What do humans need in order to survive
Answer:
They need the basic and most important thing in life which is food shelter and clothing. Thanks. Hope it helps.
How are mitosis and meiosis similar?
A. In both processes, chromosomes are copied.
B. Both processes produce four diploid cells.
C. Both processes produce four haploid cells.
processes
D. In both processes, tetrads are formed.
Answer:d
Explanation:because it is
Which of the following is made of microcrystalline quartz? Group of answer choices A.dolostone B.gypsum C.chert D.coquina
Describe the typical principles used to identify topogenic sequences within proteins and how these principles can be used to develop computer algorithms. How does the identification of topogenic sequences lead to prediction of the membrane arrangement of a multipass protein
Answer:
Topogenic sequences share a series of structural features, and thereby computational algorithms can be used to predict these protein-membrane segments
Explanation:
Topogenic sequences are protein segments formed by alpha-helical transmembrane domains, which are required for the insertion of membrane proteins. These domains share a series of well-defined features: they are composed of segments of about 20 hydrophobic amino-acid residues. In consequence, computational algorithms can be designed to identify protein patterns that fulfill these structural requirements (i.e. segments with a length of 20 residues, hydrophobic level, etc). The models assign a similarity threshold (threshold value) that predict if the similarity level of the protein pattern is good enough to detect a topogenic segment.
Where does the Energy from plants originally come from?
Answer:
In plants, these energy factories are called chloroplasts. They collect energy from the sun and use carbon dioxide and water in the process called photosynthesis to produce sugars. Animals can make use of the sugars provided by the plants in their own cellular energy factories, the mitochondria.
hope ti helps please mark me brainliest XD
Explanation:
the force that drives fluxes of uncharged particles is :
a. heat
b. the chemical potential (μ)
c. dμ / dx
d. dμ / dt
Answer:
c. dμ / dx
I'm not sure but this all I can give you
Polypeptides are chains of amino acids linked together in a specific order.
What type of bonds are formed between these amino acids?
Choose 1 answer:
Peptide bonds
Glycosidic linkages
Hydrogen bonds
Ester linkage
Answer: peptide bonds
Explanation:
A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water.
This is a dehydration synthesis reaction (also known as a condensation reaction), and usually occurs between amino acids.
Hitchhiker's thumb is inherited via two recessive alleles and causes a hyperextensibility of the thumb. The dominant allele causes a straight thumb phenotype. Predict the phenotypic and genotypic ratios from the following cross.
One parent with Hitchhiker's thumb crossed with a Straight thumbed individual who had a parent with Hitchhiker's thumb.
a. Phenotypic and Genotypic 1:1
b. Phenotypic 2:1 and Genotypic 1:1
c. Phenotypic 1:1 and Genotypic 2:1
d. Phenotypic and Genotypic 3:1
Answer:
a. Phenotypic and Genotypic 1:1
Explanation:
Two recessive alleles are required in order to be phenotypically affected for Hitchhiker's thumb. Hence, the genotype of the parent with Hitchhiker's thumb would be homozygous recessive.
Assuming the trait to be represented by the allele h, the genotype of the parent with Hitchhiker's thumb would be hh while the genotype of an individual with straight thumb who had a parent with Hitchhiker's thumb would be heterozygous, Hh.
Crossing the two individuals.
hh x Hh
Progeny: Hh hh Hh hh
Hh - Straight thumb
hh - Hitchhiker's thumb
Hence, the genotypic ratio is 1:1 while the phenotypic ratio is also 1:1.
The correct option is a.
what are primitive features of lycopodium?
Answer:
Lycopodium is known as Club moss. It is a vascular plant which makes it an advanced type of plant. It however has some primitive features which includes Production of spores. The plant has an underground sexual reproduction system which produces gametes for this process and also produces spores which are used in asexual reproduction of the plant. The two forms alternate with each other. Another primitive feature is their lack of flowers.
10. What happens to DNA strands during hybridization?
O It binds together.
O It splits from each other.
ma
O It is degraded.
O It is sliced into different sections.
Answer:
it binds together
Explanation:
dna is commonly present in the shape of a molecule with double strands. In a similar way, these two molecules connect to each other in a mechanism called hybridisation. DNA naturally, the new strand hybridizes to the old strand when it is replicated.
hope this helped!
During hybridization, DNA strands bind together. The correct option is A.
The process of joining two complementary strands of DNA from various sources to create a double-stranded molecule is referred to as hybridization.
The complementary DNA strands join together during this phase and create strong hydrogen bonds between their corresponding base pairs. Adenine (A) and thymine (T) and guanine (G) and cytosine (C) couple up specifically to form this interaction.
Numerous molecular biology procedures, including DNA hybridization tests, polymerase chain reaction (PCR), and DNA sequencing, frequently employ hybridization.
Hybridization enables the identification and amplification of particular DNA sequences as well as the analysis of genetic data by allowing the complimentary strands to come together.
Thus, the correct option is A.
For more details regarding Hybridization, visit:
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Your question seems incomplete, the probable complete question is:
10. What happens to DNA strands during hybridization?
A. It binds together.
B. It splits from each other.
C. It is degraded.
D. It is sliced into different sections.
You discover a new alien race that you decide to call the PAMMARIANS. They are different from us in that they have three sexes, called Q, R, and S. All three sexes must fuse their gametes to form a new PAMMARIAN (and you thought dating on the Earth was hardi). They have nuclear DNA and extrachromosomal organelles, similar to mitochondria, called MITOCHLORIANS, which have their own DNA. The R gender is like human females (they donate the cytoplasm during the mating). Q and S do NOT donate cytoplasm during mating, like human males. Which of the following is TRUE?
A. In a mating, if only the Q gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring WILL HAVE a mitochlorian mutant phenotype.
B. In a mating, if the S and a genders have a mitochlorian DNA mutation, the offspring will be mutant as well.
C. In a mating, if only the R gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring will have NO mitochlorian mutant phenotype.
D. In a mating, if only the gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring WILL HAVE a mitochlorian mutant phenotype.
E. In a mating, if only the Q gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring will have NO mitochlorian mutant phenotype.
Answer:
Option E
Explanation:
In a mating, if only the Q gender individual has a mitochlorian DNA mutation that causes a phenotype, the offspring will have NO mitochlorian mutant phenotype.
It was discovered that an offspring always inherits the mothers mitochondrion DNA including all its defects and not from the father as the mother contributes the bulk of the cytoplasm. Thus, since the gender female is R, if she possess a mutant mitochorlian DNA, the offspring will exhibit that mutant phenotype as care to Q and S that cant pass their mutation on.
Why are scientists concerned about the use of the Bt toxin, which is used to kill insects, in genetic engineering?
It’s because they might not want insects to die.
They might need them for some work
E.g
Bees are used to make honey
How many children and adolescents with histories of maltreatment involving sexual abuse or combined sexual and physical abuse meet criteria for post-traumatic stress disorder (PTSD)?
Answer:
Exposure to child physical abuse and parents’ domestic violence can subject youth to pervasive traumatic stress and lead to Post-traumatic Stress Disorder (PTSD). The often repeating and ongoing nature of family violence exposure may result in youth exhibiting problems in multiple domains of functioning and meeting criteria for multiple disorders in addition to PTSD. These characteristics as well as unique factors related to
Which of the following removes waste from the body through perspiration? blood kidneys skin large intestine
Answer:
Kidneys, skin and large intestine. Organs of excretion include the skin, liver, large intestine, lungs, and kidneys. All of them excrete wastes, and together they make up the excretory system. The skin plays a role in excretion through the production of sweat by sweat glands.
Explanation:
Answer: SKIN
Explanation: Perspiration is the process of sweating so your skin does that
how does a cell membrane differ from a cell wall
Answer:
It is the outer non-living part of the cell but not an organelle which encloses cell membrane and provides a fixed shape. It is an outermost, flexible, living organelle of the cell which provides shape to the cell. The cell wall is elastic. The cell membrane is non-elastic.
*Hedgehogs are nocturnal and hibernate during the winter. Which of the
following is NOT true?
A)Hedgehogs eat insects and worms - they are herbivores
B)Their metabolic rate drops in winter
C)They are nocturnal as many insects are active at night
D)They hibernate as food is scarce in winter
Someone pls help me to understand what the lock and key theory is for how enzymes work. (use diagrams if it helps)
Answer:
according to this theory both enzymes and substrate possess specific shapes that fit exactly into one another.This model explains specificity.
general example when we open the door of our house we use a specific key to open the door not all keys will open the door of our house.In this example the key is substrate and the door or lock is the enzyme that fits into specific substrate.
How does the natural process of meiosis support evolution?
Answer:
During meiosis the step of crossing over is the major source of bringing evolution.
Explanation:
