Answer:
two choices
Explanation:
So "Dichotomous" means something is divied into two parts. That is why dichotomous keys always give two choices in each step.
hope this helps, have a great day!
:)
Imagine you have a five-step food chain. If 100 percent of the energy is available at the first trophic level, what percentage of energy is available at the highest trophic level?
Answer:
0.1% will be available at the highest trophic level
0.001 % of energy is available at the highest trophic level because about only ten precent of energy is carried from each step in the food chain.
What is food chain ?In the wild, the food chain describes who eats whom. Everything that is alive, from microscopic algae to enormous blue whales, depends on food to thrive. Each food web represents a possible route for nutrients and energy to travel through the ecosystem.
As an illustration, grass makes its own sustenance from sunshine. A bunny consumes some grass. Eaten by a fox, the rabbit. When a fox dies, microbes decompose its remains and return it to the soil, where it feeds grass-like plants.
There is less biomass at the top of the food chain since there is less energy there than at the bottom, therefore the first 100 percent, 10 percent, 1 percent , 0.1 percent, 0.01 percent, and eventually 0.001 percent of energy are carried from each level in the food chain.
Therefore, only 0.001% of the energy is available at the first trophic level.
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Sequence: ATGTGTAGTGCGAGTTGA
1) If the above sequence was struck by radiation and the last “T” and “AGT” was changed to an “A”, how would the amino acid sequence be changed?
2) If the last base in the underlined sequence was changed by mutation to a “C”, how would the protein be changed?
3) If the 4th base in the sequence was deleted by radiation (mutation), how would the sequence be changed?
If the 4th base in the sequence was deleted by radiation (mutation), how would the sequence be changed.
What is Mutation?A mutation is a change to an organism's DNA sequence. Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations.
Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.
Our cells are constantly undergoing mutations, yet very few of these have any negative effects on our health. A mutation is never so advantageous in real life that it makes someone a superhero or does anything strange like give them wings.
Therefore, If the 4th base in the sequence was deleted by radiation (mutation), how would the sequence be changed.
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An osprey feeding off of a bass is an example of:
А.
Predation
В.
Mutualism
C
Commensalism
D
Parasitism
Answer:
B mutualism
Explanation:
The world's food supply is influenced by social disruptions and attitudes, which directly affect which two disciplines?
A) wildlife and air pollution
B) the ecology of wildlife and the migration patterns of birds
C) the environment and agriculture
D) the environment and cultures
Answer:
C.) the environment and agriculture
Explanation:
got it right on edge 2021 :)
Answer:
C) the environment and agriculture
Explanation:
edge
During the light-dependent reaction of photosynthesis, light energy is converted into which form of energy?
chemical
mechanical
thermal
electrical
Answer:
NADPH formation.
The net effect of these steps is to convert light energy into chemical energy in the form of ATP and NADPH. The ATP and NADPH from the light-dependent reactions are used to make sugars in the next stage of photosynthesis, the Calvin cycle.
Name three carbohydrates that contain glucose as a monomer.
What are the two models of the Solar System? How are they different?
Answer:
The geocentric model says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it. The early heliocentric models consider the sun as the center, and the planets revolve around the sun.
Explanation:
Which best explains surface tension A.capillary action B.cohesion C.adhesion D.sublimation
Answer:
C. adhesion
Explanation:
Adhesion is the sticking together of two different types of molecules, so in surface tension, the water (or whatever other liquid) is sticking to a surface that is essentially made up of different molecules. Making the type of bond adhesion.
Which element has a complete valence electron shell?
Answer:
Argon
Explanation:
The element that has a complete valence electron shell is argon (Ar) since it is a noble gas in the last group on the periodic table. destinymitchell966
A DNA strand has the sequence ACCGAGCIT. Which is the complementary strand of RNA? OTGGCTCGAA O UGGCUCGAA O GTTAGTGCC CAATCTAGG
Answer:
UGGCUCGAA
Explanation:
UGGCUCGAA. According to the rule of complementarity, in RNA adenine (A) binds to uracile (U), and guanine (G) binds to cytosine (C). So, the DNA sequence is ACCGAGCTT
What makes up the middle of DNA?
Answer:
DNA is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).
Explanation:
Answer:
(The Double Helix)
Explanation:
made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).
Which statement best describes the relationship between antigens and antibodies? Antigens cause the lymph nodes to decrease in size, and antibodies cause the lymph nodes to increase in size. Antibodies cause the production of antigens, and antigens attack antibodies. Antigens cause lymph to be clear, and antibodies cause lymph to become yellow. Antigens cause the production of antibodies, and antibodies attack antigens.
Answer:
B: It produces antibodies specific to an antigen.
Explanation:
B lymphocytes (aka B-cells) are lymphocyte white blood cells. They release antibodies that are specifically made for each pathogen and attach themselves onto invading cells and flag it as a harmful cell so that T-cells can come and dispose of it.
If i'm wrong let me know. Hope this helps tho. :D
Answer:
Antigens cause the production of antibodies, and antibodies attack antigens. (D)
Explanation:
From some online research,
1)An antibody is specifically produced in response to an antigen. (Taken from Quizlet)
2)Antibodies bound to antigens on a pathogen's membrane may activate complement proteins to form a membrane attack complex (Taken from a Quizziz)
3)Antigens trigger your immune system to launch an antibody response. This means each antibody wages war against one target antigen. Once antibodies detect antigens, they bind and neutralize them. (Taken from Healthline)
Basically, this means antibodies are formed whenever antigens exist to counter-act it.
ED2021
HELP ASAP ITS TIMED!!!
A single cell of testis divides to produce:
Select one:
a. 4 sperms.
b. 6 sperms.
c. a single sperm.
d. 2 sperms.
Answer:
Well a single cell of testies divides to produce 2 sperm
The transparent part of eye that helps to focus image.
cornea or lens?
Answer:
cornea is the part of eye that help to focus
Chromosomes determine all inherited traits because they are made up of
A. ATP
B. DNA
C. centromeres
D. phospholipids
Chromosomes determine all inherited traits because they are made up of DNA.
What are the functions of chromosomes?Chromosomes allow DNA to be accurately copied during these cell divisions. So one more time. Chromosomes are found in the nuclei of our cells and allow DNA to be accurately copied during cell division. This ensures that our inner workings proceed smoothly and efficiently.
The main function of chromosomes is to carry the DNA and transfer the genetic information from parents to offspring. Chromosomes play an important role during cell division. They protect the DNA from getting tangled and damaged.
Chromosome are the thread-like structures intermingled with each other in the nucleus. They carry genes that help in the transfer of characters from the parents to the offspring and thus play an important role in the inheritance of characters.
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Assuming that the three genes undergo independent assortment, predict the phenotypic ratio of the offspring in the F2 generation.
Answer:
The answer is 1:1:1:1:1:1:1:1.
Explanation:
Assuming that the three genes undergo independent assortment, the phenotypic ratio of the offspring in the F2 generation is 1:1:1:1:1:1:1:1.
What are phenotypic traits?The term "phenotype" describes a person's observable characteristics, such as height, eye color, and blood type. Both a person's genomic makeup (genotype) and environmental circumstances affect their phenotype.
According to Mendel's law of independent assortment, the alleles of two or more distinct genes are independently selected into gametes. In other words, an allele for one gene does not affect the allele for another gene that a gamete acquires.
The F1 generation was self-crossed to produce the second filial generation, which is the F2 generation.
Therefore, the F2 generation's offspring have a 1:1:1:1:1:1:1:1:1:1 phenotypic ratio.
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The question is incomplete. Your most probably complete question is given below:
In a cross between these two plants (MMDDPP x mmddpp), all offspring in the F1 generation are wild-type and heterozygous for all three traits (MmDdPp). Now suppose you perform a test cross on one of the F1 plants (MmDdPp x mmddpp). The F2 generation can include plants with these eight possible phenotypes:
If the alleles are the same (AA) or (aa) the genotype is said to be:
a. codominant
b. heterozygous
c. incomplete dominant
d. h-o-m-ozygous
Answer:
yes
Explanation:
Pretty much is only with breathing. If a person has asthma, the inside of these airways is irritated and swollen. Asthma can cause shortness of breath, wheezing, coughing, and tightness in the chest. For some people, asthma symptoms only appear when they are exposed to something that irritates their breathing. Others have a kind of asthma that makes breathing difficult all of the time.
PLEASE HELP!!
what are the industrial uses of carbohydrate, protease and isomerase?
Hey there ..
Please mark me as brainliest ..
And..
Here is your answer
uses of carbohydrates
Production of pulp from wood cellulose, applications of starch for paper making as well as uses of glucose and saccharose for fermentation are the most important chemical and technical uses of carbohydrates. Carbohydrates used as fermentation feedstock are essential for the chemical industry.
The use of proteins from renewable raw materials contributes to the creation of a biobased, sustainable economy. Proteins are used in many industries mainly in the form of enzymes. Consider the importance of enzymatic catalysis in the food, textile and detergent industries.
PLEASE PLEASE HELP I WILL GIVE BRAINALIST
Two populations of mice live in the same forest. After a rainstorm, flooding causes a new river to form, which completely separates the populations. When the mice reproduce, which of the following will likely occur? *
A. All the offspring will die as a result of reproductive mutations.
B. The offspring will be forced to leave the second population.
C. The offspring will be genetically identical to the original, unseparated population.
D. The offspring in the new populations will have less genetic variety due to smaller populations with different gene pools.
Can someone please Help me,Thank u!
Answer:
Explanation:
1. Stars form deep inside clouds of gas and dust. A cloud of gas and dust is a Nebula (plural - Nebulae). Star forming nebulae are cold, dense, and dark. Gravity causes the densest parts to collapse, forming regions called protostars.
2.Gravity
3.STAR FORMATION Star formation happens when part of a dust cloud begins to contract under its own gravitational force; as it collapses, the center becomes hotter and hotter until nuclear fusion begins in the core. ... Interstellar cloud starts to contract, probably triggered by shock or pressure wave from nearby star.
4.As the protostar gains mass, its core gets hotter and more dense. At some point, it will be hot enough and dense enough for hydrogen to start fusing into helium. It needs to be 15 million Kelvin in the core for fusion to begin. When the protostar starts fusing hydrogen, it enters the "main sequence" phase of its life.
5. Gas and Dust in Space, the most massive reservoirs of ... Close-up of the Orion Nebula in Infrared and Visible Light. ... the material in the neighborhood of the new stars is blown away into interstellar space. ... material, and a newly formed star, surrounded by a disk, becomes observable.
Answer:
1. Stars form deep inside clouds of gas and dust. A cloud of gas and dust is a Nebula (plural - Nebulae). Star forming nebulae are cold, dense, and dark. Gravity causes the densest parts to collapse, forming regions called protostars.
2.Gravity
3.STAR FORMATION Star formation happens when part of a dust cloud begins to contract under its own gravitational force; as it collapses, the center becomes hotter and hotter until nuclear fusion begins in the core. ... Interstellar cloud starts to contract, probably triggered by shock or pressure wave from nearby star.
4.As the protostar gains mass, its core gets hotter and more dense. At some point, it will be hot enough and dense enough for hydrogen to start fusing into helium. It needs to be 15 million Kelvin in the core for fusion to begin. When the protostar starts fusing hydrogen, it enters the "main sequence" phase of its life.
5. Gas and Dust in Space, the most massive reservoirs of ... Close-up of the Orion Nebula in Infrared and Visible Light. ... the material in the neighborhood of the new stars is blown away into interstellar space. ... material, and a newly formed star, surrounded by a disk, becomes observable.
Explanation:
10. Which of the following organisms is lessly to be affected by rinderpest?
A Zebra B sheep C Giraffe D All
What is meant by selective advantage?
a) the genetic change that leads to heritable traits
b) the most recent mutation
9
Oc) a trait that helps an individual survive in its environment
12
d) the ability to survive poisons
15
e) a common allele found in a successful population
Answer:
c) a trait that helps an individual survive in its environment
Explanation:
Selective advantage is a trait that helps an individual survive better than others in its environment. It stems from the principle of Natural selection that states that individuals have differing abilities to survive due to differences in phenotype.
This trait helps individuals to adapt better to their environments and develop resistance to diseases which they, or weaker individuals around them would have succumbed to. People who have sickle cell anemia, for instance, have developed resistance to diseases.
PLSSS HELP ASAP
Body systems interact with one another to carry out life processes. When we eat food, it is broken down into nutrients that can then be used by body cells for metabolic processes and building cellular structures. Many body systems are involved in this process. Select the body systems that would NOT be involved in the breakdown and utilization of nutrients.
Body organs and systems are assigned different roles and functions for proper working and coordination. Cells need energy for working and growth which is provided by the breaking of food substances by the body systems.
The systems that will not break nutrients are:
Respiratory systemIntegumentary systemReproductive systemThe systems can be explained as:
The digestive and the excretory system are the main systems involved in the digestion, absorption and excretion of food, nutrients and waste in the body.The organs of the digestive and excretory system break the food particles, absorb the essential nutrients and minerals and eliminate the unessential and waste fluid and the solid materials from the body.The respiratory, integumentary and reproductive systems are not involved in breaking, digesting, absorbing or eliminating the nutrients.Therefore, respiratory, reproductive and integumentary systems are not involved in utilizing and breaking nutrients.
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Answer:
Its just Integumentary and respiratory
Explanation:
got it right
how the overfishing of a single species, such as the fish eaten by sea lions,
can affect an entire ecosystem.
Answer:
This can cause an extinction in that entire species of animals and sea lions would then resort to something else to eat and if they don’t find food to eat they can starve and so on
someone please thoroughly explain lac operon and trp operon
Thanks
Answer:
Like the lac operon, the trp operon is a negative control mechanism. The lac operon responds to an inducer that causes the repressor to dissociate from the operator, derepressing the operon. The trp operon responds to a repressor protein that binds to two molecules of tryptophan.
The Northern Hemisphere reaches the spring equinox on ____.
A. March 20 or 21
B. June 20 or 21
Pls hurry☝️
Answer:
A
Explanation:
The rate of soil formation cannot be increased.
Please select the best answer from the choices provided
True or False?
Answer:
This is false, at least on my quix it was :)
Explanation:
Where in a cell can DNA be found?
Answer:
its found in the nucleus
Number 8 is the question I need to know
Answer: B. sea otter
Explanation: Trust me, I had this question before. Hope it helps!
