Answer:
0.225
Explanation:
A group of students were asked to study and record the movement of amoeba to try and determine how they move. The group knew that they must plan this descriptive investigation carefully, including the selection of the appropriate technology needed to observed these single-celled organisms. Which type of microscope would be most appropriate for this investigation? A) Compound Light Microscope B) Scanning Electron Microscope (SEM) Stereo Microscope (Dissecting Scope) D Transmission Electron Microscope (TEM)
Answer:
A. Compound Light Microscope
Explanation:
USA TestPrep
Answer:
coumpound light microscope
Explanation:
what is a selectable marker?????
Distinguish between herbaceous and woody stems
Answer: herbaceous plants are plants with very flexible stems. Their leaves and stems die down to soil level at the end of every growing season amd woody plants are plants with very strong and not easily bendable stems such as trees. Woody plants produce wood as a structural tissue
Molecule X is most likely what kind of compound/molecule? *
Molecule X is an enzyme to which the starch is bonded and starch- enzyme complex is formed.
What is an enzyme?An enzyme is a type of protein that acts as a catalytic agent in chemical reactions. Enzymes play a crucial role in metabolism and other biological processes by increasing the rate at which chemical reactions occur.
Enzymes work by lowering the activation energy needed for a reaction to take place. In other words, enzymes make it easier for the reactants in a chemical reaction to come together and form products. This is accomplished by the enzyme binding to one or more of the reactants, known as substrates, and bringing them into a specific orientation that promotes the reaction. Once the reaction has taken place, the enzyme is free to bind to another set of substrates and catalyze the reaction again.
Enzymes are highly specific, meaning that each enzyme typically catalyzes only one particular reaction or a small group of closely related reactions. They are also highly efficient, able to catalyze millions of reactions per second.
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What do scientists think will happen as greenhouse gases emissions increase
A. The temperature of the earth will decrease
B. The temperature of the earth will increase
C. Temperature temperature of the earth will stay the same
D. Temperature does not impact the earth
Consider a cross between a plant with two flower colors, yellow and red. Yellow (Y) exhibits complete dominance over red (y). It also has either single blossoms or double blossoms, single blossoms (S) exhibit complete dominance over double blossoms (s). A dihybrid yellow, single blossomed flower is crossed with a red flowered and double blossomed plant. You observe the following phenotype frequencies among the 1545 offspring plants:
500 yellow flowers and single blossom plants
515 red flowers and double blossom plants
260 yellow flowers and double blossom plants 270 red flower and single blossom plants.
What is the recombination frequency between these two genes?
a. (260+270) 1545
b. 270/1545
c. 1545/ (260+270)
d. 260/1545
e. (500+515)/1545
f. 1545/260
g. 1545/270
From these results one can conclude that:_______.
a. the two genes are linked
b. the two genes are not linked
c. if the genes are linked, they are separated far enough apart to appear to assort independently
Answer:
1) option a is correct. (260+270)/1545
(Note about this option: In the statement, it is written as (260+270) 1545. Lacks the division symbol, / )
2) From these results one can conclude that the two genes are linked (option a)
Explanation:
To know if two genes are linked, we must observe the progeny distribution. If heterozygous individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. If we observe a different distribution, phenotypes appearing in different proportions, we can assume linked genes in the double heterozygote parent.
We might verify which are the recombinant gametes produced by the di-hybrid, and we will be able to recognize them by looking at the phenotypes with lower frequencies in the progeny. Phenotypes with the highest frequencies represent the parental gametes.
To calculate the recombination frequency, we will use the following formula: P = Recombinant number / Total of individuals.
In the present example:
Parental) YySs x yyss
Gametes) YS parental type ys, ys, ys, ys
ys parental type
Ys recombinant type
yS recombinante type
The total number of individuals in the offspring: 1545
Phenotypic class Number of offspring
500 Y-S- (parental)515 yyss (parental)260 Y-ss (recombinant)270 yyS- (recombinant)According to this information, the phenotypic frequencies of the progeny differ from the phenotypic ratio 1:1:1:1. We can assume then, that these genes are linked.
The recombination frequency is:
P = Recombinant number / Total of individuals
P = 260 + 270 / 1545
P = 530/1545
P = 0.343
The genetic distance between genes is 0.343 x 100= 34.4 MU.
Chromosomes pull apart and move toward opposite ends of the cell during which stage of meiosis II?
O prophase II
O metaphase II
O anaphase II
telophase II
How many amino acids are there in A peptide, B peptide and C peptide in human insulin???
Answer:
Insulin is composed of an A chain of 21 amino acids and a B chain of 30 amino acids. C-peptide is a peptide composed of 31 amino acids
Explanation:
Insulin is composed of an A chain of 21 amino acids and a B chain of 30 amino acids, the chains being held together by two disulfide bonds. A third disulfide bond is present within the A chain. Human insulin differs from porcine insulin by a single amino acid and from beef insulin by three amino acids.
Explanation:
Dashed circles around either an R or K indicate sites of peptidase cleavage that result in generation of the mature insulin that is comprised by two separate peptides: the A chain with 21 and the B chain with 30 amino acids. A third C peptide with 21 amino acids served as a linker between the A and B chains.
Metagenomics (check all that apply): Group of answer choices Can leverage Next Generation Sequencing technology to identify and characterize organisms. Rarely finds previously unknown microorganisms. Has resources to support analysis at the DOE-JGI site. Can identify microbiologic organisms without traditional isolation and culturing of individual organisms.
Answer:
- Can leverage Next Generation Sequencing technology to identify and characterize organisms
- Has resources to support analysis at the DOE-JGI site.
- Can identify microbiologic organisms without traditional isolation and culturing of individual organisms.
Explanation:
Metagenomics can be defined as the study of whole genomes of biological communities recovered from environmental samples. This genomic field has enabled the discovery of new species (microorganisms) and their effects on the environment. Next-Generation Sequencing (NGS) technologies allow to obtain huge amounts of genomic data, which has been a limitation in genomics and metagenomics. Metagenomic NGS (mNGS) is a technique used for sequencing nucleic acids present in a biological sample containing mixed populations of microorganisms. Finally, the Department of Energy Joint Genome Institute (DOE JGI) is a referent in metagenomic analysis, especially in genome assembly data obtained from microbial communities. This Science User Facility has developed a series of bioinformatics tools and databases in order to analyze metagenomic information.
Use the figure below to complete number 33 and 34.
33.
Identify the type of cell in the picture.
D
E
34.
Identify the cell parts labeled A-E.
Flagella
Name at least 2 organelles depend on the ER & describe how they rely on each other
Answer:The ER also contains domains that contact the plasma membrane (PM) and other organelles including the Golgi, endosomes, mitochondria, lipid droplets, and peroxisomes.
Who ever can do this for me will be marked that Brainly thing and thanked
Answer:
Explanation:
its my first day going through the first cycle as a drop of water and it starts off with me going through evaporation. it feels.. misty and cozy at the same time. as i rise from the ocean i say goodbye to my brothers and sister who are soon to come. i next go through transpiration in which i transition into the cycle of condensation in which i'm with other follicles of water. we get bundled together until we are to heavy to lay adrift in the clouds. while dropping i land in a puddle in which we land in a puddle. once the cycle has stopped a deer manages upon us and cleanses itself. a little after the matter the deer runs, in which a bear approaches us and replenishes itself. once it releases the water we go through the cycle all over again. Fin.
sorry if not good enough haven't done it in a little
What is the purpose of the part of the female reproductive system highlighted
below?
A. Transporting eggs
B. Developing a fetus
C. Storing eggs
D. Collecting sperm
Answer:Your answer for this question is D.
Explanation:
The purpose of the part of the female reproductive system highlighted is to collect sperm; that is the last option (D), and after that, the sperm go to the female fallopian tube.
What is the female reproductive system?The female reproductive system is a complex network of organs and structures that work together to produce, transport, and fertilize an egg, as well as support the growth and development of a fetus during pregnancy. The primary organs of the female reproductive system are the ovaries, which produce and release eggs, and the uterus, which is the muscular organ where a fertilized egg implants and develops into a fetus.
Hence, the purpose of the part of the female reproductive system highlighted is to collect sperm; that is the last option (D), and after that, the sperm go to the female fallopian tube.
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why do we commonly see isotherms on local weather broadcasts?
Explanation:
Isotherms are lines of constant or equal temperature. They are often used on weather maps by meteorologists to give a large scale view of temperatures across the U.S. If you have ever looked at a weather map in a newspaper, the isotherms are used to divide the color-filled temperatures.
Which of the following sentences correctly describes the effect of an invasive species on an area?
1.Invasive species have naturally evolved to be top predators in an ecological area. 2.These species do not have a major effect on an ecosystem.
3 .However, they may decrease the population of local species.
4. This decrease causes a drop in local fishing yields.
5. Because of their exotic nature, invasive species boost local tourism.
Answer:
They may decrease the population of local fish
Explanation:
One of the following is not a function of proteins:
Select one:
a. Catalysis as Enzymes
b. Transport of proteins
c. Protection as antibodies
d. Regulation of hormones
Which kingdoms contain organisms that are multicellular?
Eubacteria
Animalia
Archaebacteria
Plantae
Answer:
B and D
Animalia and Plantae
Explanation:
got it right in edg (see pic)
hope this helps :)
The kingdom that contain organisms that are multicellular are Animaliia and plantae
What are multicellular organisms?Multicellular organisms refers to organisms that gave more than one cells and have nucleus.
These organisms cells bond together to form tissues.
Multiple tissues join together to form organs and organs come together to form system.
Therefore, The kingdom that contain organisms that are multicellular are Animalia and plantae
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What are two ways you know a chemical reaction has taken place?
Which of the following is an example of a learned response? OA A child figures out how to ride a bicycle. O B. An adult salmon is able to return to the river where it hatched. OC. A plant turns to follow the sun during the day. OD. A man blinks when an object is tossed toward his face.
Answer:
Explanation:
I would say A. Learning to ride a bicycle is a process of getting on and falling off. You have no idea how to do it properly without practice. That's learned.
But look out for D. I'm not sure that that isn't instinctive. Somewhere along the line I think even a baby knows not to let his/her eyes be touched. Is it learned? It's close but A is a much better answer.
The salmon is instinctive. The plant doesn't learn to turn towards the sun. It does so because more food is produced.
Yes, it's A.
A is the only option that is not instinctual. Riding a bicycle is something that has to be taught (and even if you weren't taught to ride a bike, you had to figure it out by trial and error.)
The other options are instinctual and reflexive responses. The salmon returning to the river is a behavior that is pretty much hard-wired into the salmon's brain. The plant turns to follow the sun because it is a source of light and energy.
The other user expressed uncertainty as to option D, but in fact, option D is very much a reflexive, instinctual response as well. To flinch or blink when something abruptly moves towards you is not a choice or something you have to be taught — it's a reflex, something you can't control.
Some children are playing a kickball game on a flat field. One child kicks the ball and it rolled across
the field. Which statement best explains the motion of the ball?
A. The ball will roll until a force acts on it.
B. The ball will speed up as it crosses the field.
C. The energy in the ball will increase as it rolls.
D. The ball will roll continuously unless it hits something.
Answer:
A because depends on how a force acts on it is what happens to the ball
modern scientific explanations of evolution
a. have replaced darwin’s thinking
b. combine the principles of natural selection and genetic inheritance
c. rely on genetics instead of natural selection
d. fail to explain how traits are inherited
If you are studying how genes interact then you are involved in functional genomics.
True
False
Veronica has a Hitchhiker’s thumb, but neither of her parents do. She also has a different skin tone than her parents, she likes different foods than they do, and she will probably end up taller than both of them. Scientists think that differences between closely related people are
1. Entirely a result of genetic factors.
2. Entirely a result of environmental factors.
3. Due to both genetic and environmental factors.
Answer:
3. Due to both genetic and environmental factors.
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What is better for a beginners pet leopard gecko or crested gecko
Answer:
leopard gecko
Explanation:
Answer:
you chose based off what i type
Explanation:
crested geckos need a vivarium and a uvb light but turn it off at night cause they are nocturnal they need stuff to climb on a hide and a clean cage the eat a powder mixed with water and crickets you can give them other bugs to they can jump from your hand to your arm if they want to they will drop there tail if scared they do not grow back also super cute
leopard geckos need a 20 gallon or bigger terrarium with uvb to turn off at night and a heat pad 24\7 make sure its no to hot leopard geckos need a variety of bugs like crickets and bubia roaches and other and a clean tank and at least 2 hides they will drop there tail but they do grow back they just look a little different but are super cute
Write a scientific explanation to explain how natural selection and adaptation increase or decreases the chances of survival for the mice if they entered one another’s environment.
Answer:
Natural selection is a factor of biological evolution, by means of which individuals who possess a certain characteristic tend to prevail over those who lack such characteristic. Thus, by reproducing, individuals with favorable characteristics end up imposing their own set of characteristics, taking control of the environment in which they develop and relegating other individuals or condemning them to their extinction or displacement.
Thus, in the case, if some mice entered the environment of others, most likely they would not be able to adapt to the conditions to which the original group of that environment had previously adapted. In this way, natural selection itself would make the new mice end up disappearing from it, in favor of the mice that already lived there and that, therefore, had adapted their characteristics to those of the environment.
Ask a question about your assignment Explain what are shared characteristics of transcription to translation and what are their differences. Explain what their function is in each cell and their importance to the body.
Explanation:
perform the following the rhythm patterns using the given legend use any kind of membranophones pearl shoes us
The greatest amount of diversity can be found among which type of organism?
Answer:
insects first then animals
Explanation:
ANIMALS
In a DNA molecule, G pairs with __
Answer:
cytosine
Explanation:
Guanine is one of the building blocks of DNA. It's the G in the A, C, G, or T. Guanine in the double helix pairs with cytosine, so you will see CG pairs; one on one strand and one on the other.
Answer:
In a DNA molecule, G pairs with C
Explanation:
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A red blood cell has a salt concentration of 0.9%. What will happen if it is placed into
a 0.8% salt solution? The red blood cell will
burst
remain the same
shrink then grow
shrink
Answer:
Shrink
Explanation:
The blood cell would shrink because of osmosis. The molecules move with the concentration gradient so water molecules will move outside of the cell where there is less water than inside of the cell.
Blood cells are the main constituents of the circulatory system and carry the most vital function of oxygen transportation. Blood cells have a specific concentration and osmotic pressure to remain vital.
The correct answer is:
Option D. Shrink.
This can be explained as:
Cells have a tendency to shrink in hypertonic solutions while swells in hypotonic solutions.0.8% of the salt solution will act as a hypertonic solution and the RBC placed in it will shrink.When cells are placed in hypertonic solution it loses their water content to the outside surface and hence shrink.Therefore when the red blood cells are placed in 0.8% salt solution they will shrink.
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