Answers
Answer:
The answer is eukaryotes
Explanation:
This is correct because prokaryotes means NO nucleus And Eukaryotes means yes it does have a nucleus
Pro-No
Eu-Yes
Answer:
Eukaryotes
Explanation:
Related Questions
19. What macromolecule is common to surface markers, receptors,
carriers and channels? *
protein
carbohydrate
lipid
nucleic acid
Answers
You are given a protein with the following amino acid sequence:
methionine (nonpolar)-glycine (nonpolar)-serine (polar)-alanine (nonpolar)-lysine (polar)
If an amino acid substitution occurred in this polypeptide chain, predict which option would have the most
significant impact on the structure and function of the protein.
a. Serine is replaced by lysine (polar)
b. Glycine is replaced by alanine (nonpolar)
c. Alanine is replaced by leucine (nonpolar)
d. Lysine is replaced by tryptophan (nonpolar)
?
Answers
Answer:
d. Lysine is replaced by tryptophan (nonpolar)
Explanation:
Amino acid substitutions can have varying affects on the protein function, depending on the specific substitution and the location of the substitution.
If the substitution occurs in an important region, for example an enzyme active site, then the function of the protein could be destroyed.
Additionally, if the substitution replaces the amino acid with a highly different amino acid with different properties (eg. polarity), it could alter the structure and function of the protein.
Replacing lysine (polar) with a tryptophan (non-polar) changes the properties of the amino acid at that location, whereas the other substitutions do not.
Why do you think ANIMAL CELLS are able to survive without the types of cell walls that are present in nearly every other group of organisms? Provide 3 answers.
Answers
Answer:
They survive because these cells need a high permeability to be able to maintain the internal cellular balance in relation to the external environment that surrounds them, and this is due to their high energy demand, their multi-complex and multiple functions, and the capacity for constant homeostasis with the environment. that surrounds them.
Explanation:
In addition, some cells need to transmit signals, second messengers or even to fulfill a function to exchange compounds for their transmembrane, this is what makes the human system together with other systems of other animals is extremely open and is in constant energetic exchange, in addition to Unlike plant cells, plant cells are under an autonomous regime, they do not need to take energy from the environment but they manufacture it themselves, and it fulfills a great function that is to provide structure and support, the wall they have is what gives it the ability to fulfill these two functions.
The chromosomal aberration that causes cri-du-chat syndrome can be referred to as a(n) g ________.
Answers
Answer:
"Segmental deletion" seems to be the correct answer.
Explanation:
A special sequence range of approximately [tex]1\times 10^6[/tex] bp scattered segmental transposable elements containing DNA over a system or zone of [tex]2\times 10^6[/tex] bp edge. About [tex]1.6\times 10^6[/tex] bp, including that of the special sequence DNA, is destroyed if recombination happens between some of the segmental duplications.Which phrase best defines homeostasis
Answers
Answer:
maintaning the essential internal parameters relatively constant is the phrase that best describes the process of homeostasis.
what determines the physical and chemical properties of a mineral?
Answers
Answer: Determines the properties of a mineral by the composition and structure .In such as: : colour, taste, tenacity, magnetism, fracture, streak, specific gravity, [ amount of transparency and crystalline structure.
Which term best describes the organic molecule below?
Hint: There is a double bond in the center of the chain.
A. Cholesterol
B. Phospholipid
C. Saturated fatty acid
D. Unsaturated fatty acid
Answers
As a result of the double bond in the organic molecule below, we can tell that it is a D. Unsaturated fatty acid.
Unsaturated fatty acids:
Have at least a single double bond in their structure Are usually liquid at room temperature Are categorized into monounsaturated and polyunsaturatedOleic acid has a single double bond which makes it an unsaturated acid. It can be further classified as a monounsaturated acid due to it having just that one double bond.
In conclusion, Oleic acid is an unsaturated fatty acid on account of its double bond.
Find out more at https://brainly.com/question/4891995.
Which of the following mRNA codons will bind to the tRNA anticodon 5' GCU 3', considering wobble–base pairing rules. Select one:
a. 5' CGA 3'
b. 5' AGU 3' and 5' AGC 3'
c. 5' AGC 3'
d. 5' UGA 3' and 5' CGA 3'
Answers
Answer:
a. 5' CGA 3
Explanation:
The wobble type of base pairing also comprises the base pairs formed by inosine (I) also called hypoxanthine with Cytosine(C), Thyamine(T), or Adenine (A),
Where purine base pairs A to G(or I), A to A, and G to C.
Where
5' GCU 3' pairs with
5' CGA 3
Therefore G pairs to C, C pairs to G, U pairs with A.
Histones are small proteins with a strong positive charge at physiological pH. They are found in the nuclei of eukaryotic cells and package DNA into nucleosomes, the fundamental structural units of chromatin. Based only on this description, what two forms of chromatography could you use, one after the other, to separate histones from other cellular proteins? Explain your reasoning.
Answers
Answer:
Two modes of chromatography that could be used over and over, based on characteristics of histones throughout the issue, are:
Size-exclusion Chromatography Ion exchange chromatographyExplanation:
Using size exclusion chromatography:A stationary step, consisting of such a polymeric material with numerous pores of various sizes. The larger proteins would travel further as the solvent system comprising the analytes flows through the paper chromatography and therefore will be separated first. That was because their greater size does not in itself allow the pores found in the polymer to get trapped. Tiny proteins such as histones, and on the other hand, can pass slowly across the process to have been eluted later.
Using Ion exchange chromatography:As even the histone properties at biological pH are strongly positively charged, through the use of highly reactive particles as when the stationary step will allow histones to connect to themselves and now all the proteins, as well as favorable proteins that are poorly absorbed, would be eluted. Many positively charged molecules, that aren't as highly charged at around the same pH as histones, will stay throughout the stationary step, however, based on whose net charge, should flow independently of histones.
The two classes of chromatography techniques include size-exclusion and ion exchange chromatography.
What are size-exclusion and ion-exchange chromatography?Chromatography is a technique used in molecular biology laboratories to separate biomolecules.
Size exclusion chromatography is a technique capable of separating biomolecules according to size by using filtration in a gel. Size exclusion chromatography is a technique capable of separating biomolecules and ions according to their affinity to a given ion exchanger.In conclusion, the two classes of chromatography techniques include size-exclusion and ion exchange chromatography.
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Why is VRBA (Violet red bile agar) only pasteurized rather than sterilized prior to use?
Answers
Answer:
Explanation:
This is because Violet and red bike is only a selective medium that detect and analyse lactose coliform microorganisms that cause fermentation and this is present in diary products like milk. This is milk use for microbiological analysis of milk because of it ability to detect lactose which is a milk sugar. There fore it cannot be use for sterilization.
Notice on the graph that the time period between 0 and 3 minutes forms a straight line on the graph.
What does this indicate about the rate of the reaction?
Answers
Answer:
The graph is positive.
Explanation:
Straight line on the graph indicates that the rate of reaction is positive which means that reaction intensity increases with the passage of time. OR in other words, the reaction produces more products with the passage of time and no decrease occurs in their rate because the graph is not coming downward or changing so that's why the graph go in the straight line.
Yellowstone National Park there are rocks formed that are both extrusive and intrusive igneous rocks. It is important to note that the main difference between them is _________.
Question 6 options:
How they formed; intrusive rocks formed from lava and extrusive rocks are form from magma
How they formed; extrusive rocks formed from lava and intrusive rocks formed from magma
Where they are found; extrusive rocks are only found above ground
Where they are found; intrusive rocks are only found above ground
Answers
Answer:
The correct answer is - Where they are found; extrusive rocks are only found above ground
Explanation:
Intrusive and extrusive rocks are the two formed in Yellowstone natIonal park but there is how and where they formed that makes them different from one another. they both are igneous rocks.
The major difference between extrusive rocks and intrusive rocks is that extrusive rocks are formed on the surface or above the earth's surface from the lava that is magma thurst out from underground. Intrusive rocks are formed within the crust from the magma after cooling down and solidify.
Based on your knowledge of reproduction in bryophytes and ferns, is the presence of flagellated sperm in cycads surprising? Why or why not?
Answers
Answer:
The correct answer is - All plants share a similar life cycle
Explanation:
The sperms that the bryophytes are biflagellated whereas in ferns these are multi-flagellated that helps in the swimming to the archegonia or female part to perform the fertilization, due to the presence of water.
The sperms in cycads also have flagella for the same purpose of swimming in the pollen tube. The ferns and the bryophytes both require the same or similar life cycle that includes the flagella and water for the formation of the zygote.
For a single-gene trait with alleles A and a, a certain mating produces offspring that are 1/4 AA : 1/2 Aa : 1/4 aa. What is the mating?
Answers
Answer:
Random mating
Explanation:
Random mating is a type of mating that allows individual to have equal chance of been mated to.
AA genotye is mated with aa from a population and they produce
Four individuals with Aa
AA × aa
!
F1: Aa Aa Aa Aa
This individuals then intermate in the next generation to produce an offspring with three difference genotype AA, Aa, aa in ratio 1:2:1 this is called segregation of genes. This allow to see the variation and hidden features of the individual mated.
Aa × Aa
!
AA Aa Aa aa
F2: 1/4 AA, 1/2 Aa, 1/4 aa
Which describes an altocumulus cloud?
a.
high, feathery cloud
c.
low storm cloud
b.
puffy mid-level cloud
d.
high cloud made of ice crystals
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
Puffy mid level-cloud.
Explanation:
So the answer is B. Got it right on edge 2021 Stay safe!!
Answer:
the answer is B.)
Explanation:
i did the quiz a week ago-
SOMEONE PLZ HELP!!!!!!!!!
Answers
Answer:
the central vacuole.
Explanation:
the vacuole is responsible for discarding waste within the cell.
Answer:
central vacoule because it is just like a vacum :)
Explanation:
The process by which a modified stem or root of a parent plant grows offspring that remain attached is called(1 point)
vegetative reproduction.
fragmentation.
binary fission.
tuber reproduction.
Answers
Answer:
vegetative reproduction
Explanation:
～( TロT)σ believe it
compare endocytosis and exocytosis. ( one similarity and one difference)
Answers
Answer:
Similarities include: Both are involved in transporting big molecules across the membrane. ... formed from the cell membrane which then gets into the cytoplasm. Exocytosis increases the size of the cell membrane while endo does the opposite.
ATG AATTCTCAATTACCT
TACTTAA GAGTTAATGGA
How many pieces of DNA would result from this cut
Answers
What key adaptation allowed the ferns to be successful and populate more areas than the bryophytes?
Answers
Answer:
Possession of root, leaves and vascular/conducting tissues
Explanation:
Ferns and bryophytes are regarded as lower plants in botanical studies. Bryophytes have been in existence prior to the appearance of ferns. BRYOPHYTES are a group of non-vascular plants i.e. lack conducting tissues such as xylem, phloem etc. They include misses, liverworts and hornworts. Ferns, on the other hand, belong to a group of vascular plant species called PTERIDOPHYTES.
However, in terms of population and domination of the Earth, ferns are believed to be more successful than their counterparts (bryophytes). This is primarily because of the possession of true roots and vascular tissues like xylem (for conducting water), phloem (for conducting sugars) by FERNS making it easily adapted to life on land.
You want to know if black squirrels or brown squirrels have a greater birth rate. Your ALTERNATIVE hypothesis is:_________.
Answers
Answer:
Natural selection is a mechanism of evolution proposed by Charles Darwin. It is the differential survival and reproduction of individual due to the difference in the phenotype. Over time, this process results in populations which are better adapted to their environment as they tend to survive and produce new offspring. The brown squirrels with thick coat survive at a higher rate than the brown sqirrels without the thick coat. Thick coat is a adaptation for survival in cold winters which are chosen over the other and allowed to reproduce.
Explanation:
2. Which of the following statements best describes exocytosis ? *
(1/1 Point)
The way cells grow and become adult cells
The way cells get rid of waste products
The way cell communicate with each other
The way cells take in food and other materials
O
Answers
How are the processes of the water cycle essential to an unpolluted biosphere?
Answers
Answer:
Explanation:
if things on earth like dead animals or polluted chemicals in the air can affect the biosphere so keeping the stages of the water cycle safe and clean are essential to keeping the biosphere unpolluted. because Evaporation & transpiration distill water naturally, it filters out minerals and pollutants.
How many hydrogen atoms are present in each water molecule?
A.
1
B.
3
C.
2
D.
4
Answers
Answer:
C. 2
Explanation:
Alana wants to measure the speed at which drops of precipitation fall to the ground in Los Angeles.
Which statement identifies a way Alana uses technology to complete her experiment?
O She observes daily rainfall data from multiple weather stations throughout the city.
O She graphs the relationship between rainfall speed and time using graphing paper.
O She analyzes a map to determine different places to collect rainfall for the study,
O She estimates how fast rain falls by studying the sky at different locations in the city.
Answers
Answer:
She observes daily rainfall data from multiple weather stations throughout the city.
Explanation:
pls help !!!!!!!!!!!
Answers
the answer is isotonic
When plants undergo photosynthesis, a reaction produces sugar, oxygen, and water. During respiration, stored energy from the products of photosynthesis is converted to usable energy. In what form is the energy stored prior to use in respiration?
A. Light energy
B. Kinetic energy
C. Heat energy
D. Chemical energy
Answers
Answer:
chemical energy
Explanation:
Plants use cellular respiration which requires a lot of chemical reactions to break down fat and proteins and use as fuel
CAN SOMEONE HELP!!!!!
Answers
Answer:
B and i think D
Explanation:
The presence or absence of
a. cells
b. atoms
c. molecules
provide evidence that a specimen is a living thing.
Answers
Answer:
I know it
Explanation:
cells because an humane body is made up of cells
Explain how weathering and erosion can make a cave. Is it physical or chemical weathering?
Answers
Answer: Weathering and Erosion could make a cave if the force is high enough, and it would be in the physical element because chemical is not entirely correct.