Which of the following sequences on a DNA molecule would be complementary to
GCTTATAT?
A.TAGGCGCG
B.COD ATCCGCGC
C.KUCGAATATA
D.TGCCTCTC
E.None of the above
Which is NOT an immune component that can directly attack & destroy target cells?
a. macrophages
b. cytoxic T cells
c. helper T cells
d. natural killer cells
Answer:
Macrophages are part of your innate immune system, which is antigen-independent and does not require activation.
Explanation:
Macrophages phagocytize (internalize) all non-self pathogens it encounters. These do their job without activation. Other cells in the innate immune system include basophils, neutrophils, eosinophils (these cells are polymorphonuclear leukocytes), mast cells, and dendritic cells, which act as the bridge between your innate and adaptive immune system.
All of the other entities listed above are part of your adaptive immune system. The adaptive immune system is antigen-dependent and requires activation. This section of your immune system responds differently to different pathogens, and has the bonus of having immunologic memory, the ability to remember pathogens after infection and respond much quicker upon secondary and tertiary encounters.
Note: All lymphocyte types begin as naïve cells, which then differentiate into their fully matured form upon activation.
Helper T cells are a type of CD4+ T cell that has the job of activating B and T lymphocytes. There are two different types of T helper cells: Th1 and Th2. Th1 cells secrete the cytokine interferon-gamma (IFNγ), and is primarily involved with the stimulation and activation of cytotoxic T cells, while Th2 cells secrete a variety of cytokines and are responsible for activating and assisting with B cells to make antibodies. To make a long story short, Th cells interact with APC (Antigen Presenting Cells), specifically their Class II MHC (a group of genes that present exogenous proteins). The Th cells then proliferate and gain the ability to activate these APC cells and provide the necessary signals to activate B and T cells and make them proliferate and do their specific function.
Some of the largest mountains in the world, including the Himalayas, occur where
Select one:
a.
two oceanic plates diverge.
b.
two continental plates converge.
c.
an oceanic and a continental plate diverge.
d.
an oceanic and a continental plate converge.
Answer:
b. two continental plates converse
Compare and contrast the two upper layers of the mantle?
Answer:
Both the lithisphere and asthenosphere are the part of Earth and are made of similar material. Lithosphere is made up of Earth's outermost layer, the crust, and the uppermost portion of the mantle. In comparison, the asthenosphere is the uppermost portion of Earth's mantle. Which is also the middle layer of Earth.
Two species have homologous structures. What do these homologous structures show about the evolutionary relationship between the two species?
click on the link below to see the primate family tree diagram. Which of the following statements is true?
Answer:
biology is amazing it contains some reproductive topics
Orangutans evolved from an ancestor they share with gorillas is true regarding primate family tree diagram. This means that orangutans and gorillas have a common ancestor. Option C is the correct answer.
Evolution is the process through which species change over time. It occurs through the accumulation of genetic variations and natural selection. The primate family tree shows the evolutionary relationships between different primate species, including orangutans and gorillas. Option C is the correct answer.
Orangutans and gorillas share a common ancestor in their evolutionary history. This means that at some point in the past, there was a species that gave rise to both orangutans and gorillas. Over time, as the common ancestor of orangutans and gorillas diverged into separate lineages, each species developed its own unique traits and characteristics. Despite their distinct characteristics, orangutans and gorillas still share certain genetic similarities due to their common ancestry. These similarities can be observed in their DNA sequences.
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The complete question is, "Which of the following statements is true regarding primate family tree diagram?
A. Orangutans evolved from lesser apes and Old World monkeys.
B. Gorillas evolved from orangutans.
C. Orangutans evolved from an ancestor they share with gorillas.
D. Gorillas are more closely related to lesser apes than to chimpanzees."
What would be most likely to happen if some of the proteins Ik one of the photo systems were to change shape due to a drop in cell pH?
A. A decrease in the formation of NADPH
B. An increase in the formation of NADP+
C. A decrease in chlorophyll production
D. An increase in sugar production
Answer:
Option A
Explanation:
If some proteins in one of the photosystems undergo change in their shape due to a drop in pH of cell, they will not perform their activity. Due to this, there will be a decrease in the formation of NADPH ( that is less reduction of NADP due to blockage in the transport of electron).What was the name of your fish sample, according to the restaurant menu?
Types of Sashimi (slice of raw fish) listed on the restaurant menu:
1. Escolar – Super white tuna
2. Maguro – Big eye tuna
3. Hamachi – Yellowtail
4. Tai – Red snapper
5. Nama Sake – Salmon
6. Saba – Mackerel Fish
normally, yellowtail and salmon is served as sashimi but im not sure I don't really get the question lol
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:
Which is the only element in group 1 on the periodic table that forms covalent bonds?
hydrogen
lithium
potassium
sodium
.
Answer:
Hydrogen
Explanation:
Hydrogen is the only nonmetal in group 1, therefore it is the only element in group 1 that forms a covalent bond.
Answer:
A.
Explanation:
Sophia
Which of the following represents the correct flow of information during
homeostasis?
Home
a.) Integrator - Sensor - Effector
O b.) Sensor - Integrator - Effector
Hi
WHAT'S
oc.) Sensor - Effector - Integrator
Welcome to
allows your
o d.) Effector + Integrator + Sensor
1. Homeo
2 Sensors
Answer:
b.) Sensor - Integrator - Effector
Explanation:
During homeostasis, our body sense change that occur in the external environment through sensors. These sensors sends the information to integrator or the control center where the information is analyzed. After analysis, the instructions are send to the effectors to take action against the change which is occur in the external environment of our body so the correct order of homeostasis is Sensor - Integrator - Effector.
ich example best shows that the chemistry of water is helpful to plants?
Water’s polarity produces a high density, which allows water to move to the leaves.
Water’s bent shape causes a slow passage of nutrients up to the leaves of plants.
Water’s polarity causes cohesion that pulls other water molecules up through a plant.
Water’s bent shape reduces its own passage through the cell membranes of roots.
Answer:
waters polarity causes cohesion that pulls other water molecules up through a plant.
I hope this helps
what kind of services are provided in travel and tourism
Answer:
Tourism and travel-related services include services provided by hotels and restaurants (including catering), travel agencies and tour operator services, tourist guide services and other related services.
At this point, the writer is considering adding the following sentence. Successful nerve impulse transmission depends not only on myelin sheaths, but also on the presence of ion pumps embedded in the cell membrane. Should the writer make this addition here?
A) Yes, because it describes how the presence of ion pumps is related to the functions of cholesterol.
B) Yes, because it supports the passage’s main argument with a second example of cholesterol’s potential adverse health effects.
C) No, because it identifies a relationship between the nervous system and ion pumps that has already been discussed.
D) No, because it interrupts the paragraph’s discussion of cholesterol’s functions with loosely related information.
Answer:
D) No, because it interrupts the paragraph’s discussion of cholesterol’s functions with loosely related information.
Explanation:
The passage was discussing the importance of cholesterol in nerve impulse transmission. Its presence in the myelin sheaths of nerve cells speeds up nerve impulse transmission. It will not be wise for the author to now bring in the relationship between nerve impulse transmission and ion pumps. This is because the main topic under discussion is cholesterol and its importance. The sentence should be continued with other importance of cholesterol and not ion pumps.
The gas form of water is ____________.
The gas form of water is water vapor.
Answer:
Water vapor
Explanation:
Hope this is helpful.
What is Anatomy and physiology
Answer:
Anatomy: The branch of science concerned with the bodily structure of humans, animals, and other living organisms, especially as revealed by dissection and the separation of parts.
Physiology: The branch of biology that deals with the normal functions of living organisms and their parts.
Explanation:
Anatomy = The science that deals with the form and structure of organic bodies; anatomical structure or organization is Anatomy.
Physiology = A branch of biology that deals with the functions and activities of life or of living matter (as organs, tissues, or cells) and of the physical and chemical phenomena involved is Physiology.
Hope it will help:)❤️
Compared with a eukaryotic cell, a prokaryotic cell Select one:______
a. lacks organelles beyond ribosomes.
b. is larger.
c. does not require energy.
d. is not living.
e. has no method of movement.
A polypeptide can be made up of a chain of as many as _______ amino acids.
Answer:
A polypeptide can be made up of a chain of as many as 50 amino acids.
The the below the states five clemos demented by A. 1) and
with their tennie numbers, entro numas, amber of electrons i
mass numbers. Study the table and answer the questions that follow
Home
number
Number of
metros
Number of
electron
Mass
nonbey
Element
A
12
12
19
24
/
H
7
7
14
10
C
11
13
11
18
35
D
17
18
©
12
22
10
Write the element(s) that is/are
cations)
(1) anionis)
neutral;
(10) isotope(s)
17 mark
Answer:
which class ? this has two answer
Which allows materials to enter and exit the nucleus?
pore
nucleolus
chromatin
cell wall
Answer:
a pore allows materials to enter and exit the nucleus
In eukaryotes, miR-5 is a microRNA with sequence complementarity to the 3’UTR of the mRNA transcript encoded by the UCD gene. The UCD gene encodes for a protein that acts as an allosteric activator of the protein p101. The p101 protein is a DNA methyltransferase (DNMT) which is an enzyme that methylates DNA when the protein is in its active form.
A) In a lung cancer cell line, the p101 protein is overly active leading to misregulation of gene expression. In these lung cancer cells which of the following would be a correct prediction in regards to miR-5? [choose ALL that apply, note that incorrect selections will deduct points]
A) The gene encoding miR-5 is in a region of chromatin with hypoacetylation
B) The gene encoding miR-5 is in a region of chromatin with hyperacetylation
C) The gene encoding miR-5 in a region of euchromatin
D) The gene encoding miR-5 in a region of heterochromatin
E) The miR-5 transcript is translated at high levels
F) The miR-5 transcript is activating translation of the UCD gene
B) A different lung cancer cell line is found to have significantly decreased amounts of DNA methylation. Which of the following could explain why there is decreased DNA methylation in this cell line? [choose ALL that apply, note that incorrect selections will deduct points]
A) increased amounts of the p101 protein due to low levels of miR-5
B) increased amounts of the UCD protein due to high levels of miR-5
C) decreased amounts of the UCD protein due to low levels of miR-5
D) the absence of the UCD protein due to miR-5 inhibiting translation of the UCD mRNA transcript
E) the absence of the p101 protein due to miR-5 inhibiting transcription of the p101 mRNA transcript
Answer:
A) A) The gene encoding miR-5 is in a region of chromatin with hypoacetylation.
D) The gene encoding miR-5 in a region of heterochromatin.
B) D) the absence of the UCD protein due to miR-5 inhibiting translation of the UCD mRNA transcript
Explanation:
MicroRNAs (miRNAs) are small regulatory RNA sequences (approximately 20-24 nucleotides in length) that regulate gene expression by RNA interference (RNAi) mechanisms. These sequences (miRNAs) bind by base complementarity to messenger RNAs and thus inhibit protein translation and/or trigger mRNA degradation. In this case, miR-5 binds to the 3’UTR of the mRNA transcript of the UCD gene, thereby inhibiting/slowing protein UCD synthesis. The UCD protein is an allosteric regulator that binds and activates the expression of the p101 protein, thereby the miR-5 RNAi pathway also indirectly decreases the expression of the p101 gene. Moreover, hypoacetylation is an epigenetic mark generally associated with gene silencing (heterochromatin is a transcriptionally inactive state of chromatin).
Noah wants to show the largest source of carbon on Earth for his school project. According to his research, in which form is most of the carbon on Earth stored?
Noah wants to show the largest source of carbon on Earth for his school project. According to his research, most of the carbon on Earth is stored in the form of
.
Answer:
The majority of carbon on Earth is found in rocks and sediments, with the remainder found in the ocean, atmosphere, and living creatures. Carbon cycles pass through these reservoirs, or sinks.
Explanation:
For his school project, Noah wants to demonstrate the earth's natural primary carbon-producing source. His results suggest that sedimentary rocks are where the majority of the carbon on earth is preserved for future use.
What is sedimentary rock?The gradually building or deposition of mineral or organic particles at the Earth's surface, followed by cementation, is the process by which sedimentary rocks are formed. Sedimentation is the broad term employed to define the procedures which lead to the accumulation of these particles.
Sedimentary rocks are constructed from pre-existing rocks or remnants of extinct creatures. They emerge from deposits that amass on the Earth's surface. Apparent bedding or layering is particularly common in sedimentary rocks.
Thus, his results suggest that sedimentary rocks are where the majority of the carbon on earth is preserved for future use.
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why do sun spots appear darker than their surroundings
Answer:
they are comer than their surroundings.
Sunspots are cooler because their magnetic fields inhibit the replenishing of heat from convective flows (due to the interaction between plasma and magnetic fields). This allows them to cool radiatively. The rest of the solar surface is constantly being replenished by convective cells that reheat it.
Answer:
because they are significantly cooler than the rest of the Sun's surface Despite their gloomy appearance, they are nonetheless extremely hot. A sunspot would shine brightly if it were alone in space.
OAmalOHopeO
Many anti-evolutionists believe that since science doesn't have answers for all questions; scientific conclusions are not necessarily correct. This attitude reflects a failure to understand the nature of science. What is the general nature of scientific thinking? In what way is science "self correcting"?
Answer:
In science, accepted theories do not represent absolute truths. A scientific theory is accepted when there is much evidence available that support its statements, but new lines of evidence can modify original presumptions
Explanation:
A scientific theory is a plausible explanation of a particular phenomenon of the natural world, which has been many times tested and verified by using the scientific method. The accepted theories are progressively modified (or even overturned) as new lines of evidence emerge. In consequence, a scientific theory is composed of statements that we consider as truths regarding the available evidence, but we have no absolute certainty that such statements are true. The ability to self-correct is fundamental in science and it happens when we discover that the original statements of a scientific theory were wrong, thereby new lines of evidence allow us to correct the error and/or develop new scientific theories.
Which of these would have the lowest kinetic energy?
Are there options too? If yes, then plz provide the options too, the next time you ask :) . Solids would have the lowest kinetic energy and gases have least kinetic energy.
What allows humans to have different traits from each other?
A. They store DNA in different places.
B. They have different genes.
C. They have different haploidnumbers.
gling
D. They have different number
Ichromosomes.
SUBMIT
Answer:
B. They have different genes.
Explanation:
2.
How do scientists classify intrusive igneous features?
according to shape, texture, and their distance from the nearest volcanic field
according to shape, color, and their relationship to surrounding layers of rock
according to shape, size, and their relationship to surrounding layers of rock
Answer:
according to shape, size, and their relationship to surrounding layers of rock
Explanation:
Intrusive igneous features are those formations around the igneous rock that are developed over time when magma cools and forms a solid shape, and they may include stocks, sills, di.kes, etc.
Therefore, scientists classify intrusive igneous features according to shape, size, and their relationship to surrounding layers of rock.
The history of life has been punctuated by several mass extinctions. For example, the impact of a meteorite may have wiped out most of the dinosaurs and many forms of marine life at the end of the Cretaceous period. Fossils indicate that plants were less severely affected by this mass extinction. What adaptations may have enabled plants to withstand this disaster better than animals
Answer:
Due to dormancy.
Explanation:
Plants have an advantage in surviving mass extinction because Plant seeds can remain dormant for many years in the soil without damaging and comes out from the soil when the conditions of the external environment become suitable. Plants can remain in dormant condition for a large period of time while on the other hand, animals have no such type of advantage so that's why plants survive mass extinction.
Which of the following statements about continuous variables is
A. continuous variables must lie between a clearly defined interval
B. continuous variables may be restricted to positive values
C. continuous variables will never be nonzero
D. continuous variables must always be restricted to positive values
Answer:
I think it's A
must lie btn a clearly defined interval
Continues variable must be between a clearly defined the interval about continuous variables. Thus,option A is correct.
What is continuous variables?A continuous variables is define as a function which continuous varies in a given interval for instance, if a variable over a non-empty range of the real numbers is continuous, then it can take on any value in that range.
Types of continuous variables:
There are two types of continuous variables which are mentioned below:-
1:- Instant variable
2:- Ratio variable
Instant variable
A variable can be defined as the distance or level which are varies between given interval.
Ratio variable
Ratio variable is another type of continuous variables which has only one variation in given interval.
Therefore, continues variable must be between a clearly defined the interval about continuous variables. Thus, option A is correct.
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HELP ASAP I WILL GIVE BRAINLIST
An unknown solution has a pH of 7.1. Which of these chemicals is likely to increase the pH the most when added to the solution?
HF
KOH
NH3
HNO3
Answer:
It is most likely KOH
Explanation:
NH3 is classified as a weak base so I'd suspect that to be incorrect although it does have a higher pH
The chemical that is likely to increase the pH the most when added to the solution is KOH. The correct option is B.
What is pH?
pH is the scale for the measurement of acidity and the basicity of any solution. pH is a scale from 1 to 14. The lowest pH will be highly acidic and the highest pH will be the highest basic.
The lowest the pH, it will donate the highest hydronium ions, and with the highest pH, it will dissociate completely into the solution. KOH dissociates completely into ions.
KOH or potassium hydroxide is a strong base. When the base is added to a solution, it increases its basicity. So it will increase the pH of the solution. All others are acids that will lower the pH of the solution.
Thus, the correct option is B. KOH.
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