Answers
Answer:
hey what if you dont know it
Explanation:
Related Questions
Listen How are channel and carrier proteins similar? Select all that apply.
A. Channel and carrier proteins move substances in a certain direction, regardless of their concentration gradients.
B. Channel and carrier proteins are both types of facilitated transport.
C. Channel and carrier proteins can only move substances in one direction either into the cell or out of the cell.
D. Channel and carrier proteins always move substances from the side of the membrane with the highest concentration to the side with the lowest concentration.
Answers
Answer:
a
Explanation:
A. Channel and carrier proteins move substances in a certain direction, regardless of their concentration gradients.
Channel and carrier proteins are both types of facilitated transport.
Facilitated diffusion is one of the ways of transporting molecules and is characterized by the use of proteins that are inserted in the plasma membrane, such as ion channels and carriers or permeases.
Ions, amino acids and monosaccharides, among many other molecules, cannot cross the plasma membrane, because they are polar or are very large in size.
So, for the cell to obtain or eliminate these substances, the presence of transporter proteins is necessary.
This diffusion is a type of passive transport, because it takes advantage of the concentration gradient of the molecules and does not waste energy.
Ion channels are integral tunnel-shaped proteins, selective for one, two, or three ions. When a channel opens, ions flow under two principles: the concentration gradient and the electrochemical gradient.Consequently, when an ion channel opens, the potential difference between the two compartments is altered.
Transmembrane proteins mediate the transport of molecules such as bicarbonate or large, polar, uncharged molecules such as glucose.The transport through these proteins occurs in favor of the concentration gradient, and by a reversible conformational change of the proteins that allows the translocation of the molecule to the other side of the membrane.
This type of transport is always without energy expenditure and in favor of the electrochemical gradient, it occurs in the following way:
Uniport, a single molecule translocates in only one direction.Simporte, two molecules that translocate in the same direction.Therefore, we can conclude that channel and carrier proteins are both types of facilitated transport.
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In the United States, it is possible for discoverers of gene sequences in organisms to patent those sequences. This gives the discoverer property rights for the sequence. Many scientists object to this practice. Which is the strongest scientific argument against allowing a gene sequence to be patented?
Group of answer choices
Patenting sequences prevents conservationists rom understanding the ecological needs of organisms from which the patented sequences come.
Patenting sequences prevents he sequences from being expressed in nature.
Patenting sequences prevents researchers from studying and creating innovations from the patented sequences.
Patenting sequences prevents the sequences from being used in genetically modified organisms.
Answers
Answer:
Explanation:
There is little evidence that early fears about gene patenting placing substantial ... owner and do not protect against independent invention), patents require disclosure that ... gene knock-out methods and even for individual gene sequences. ... Human gene patents result from the cloning and description of the sequence of a ...
so option c maybe
Explain the relationship between the number of whales, the number of plankton (Biomass), and the amount of CO2 (Carbon Dioxide) in the atmosphere.
Answers
Answer:
Plankton are producers therefore they use the CO2 in the atmosphere and convert it to oxygen. Whales eat the plankton while sometimes using the oxygen that the plankton produces. In this situation, the whale is a primary consumer, or a heterotroph, as the plankton is the producer, or autotroph. Hope this helped :D
List three questions you would need to answer in order to support the claims being made about GroBIg
Answers
Answer:
Who is grobig
Explanation:
Answer: For production agriculture this generally means supplementing precipitation with irrigation. ... Increases in fuel prices means that pumping extra irrigation water increases irrigation expenses without ... GROBig Red Virtual Learning Series.
What is the benefit of
starting with two coples
of each chromosome in
Interphase I?
Answers
Answer:
Here u go sorry if wrong, if right u welcome ;)
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells
The investigator was most likely attempting to determine the effect on photosynthesis of different?
A) wavelengths of light
B) intensities of light
C) mineral concentrations
D) amounts of carbon dioxide
Answers
Answer: D) amounts of carbon dioxide
Explanation: He is putting the plants in tubes and measuring the amount of gas in each tube.
Unit 1: (5 pts)
What are the 6 main properties of life that all living things share?
- What is the Scientific Method and why is it important?
Unit 2: (5 pts)
What are the major Biomolecules and why do we need them/what do they do?
-What are enzymes ang why are they important
Unit 3: (5 pts)
-Compare Prokaryotes vs. Eukaryotes
-Compare Plant vs. Animal Cells
- Tell how Cell working together and what is cell signaling and why important?
-Diffusion and Osmosis: What are they and what do they help do?
Unit 4: (5 pts)
-ATP/energy- what is it and why is it important?
Unit 5: (5 pts)
-Cell Respiration-what is it, what is the chemical reaction and how does it relate to
photosynthesis and what life forms do it?
Unit 6: (5 pts)
-Photosynthesis- what is it; what is the chemical reaction and how does it relate to cell
respiration and what life forms do it?
Answers
Answer:
all living things made up of cells
all living thing born,grow,and die
all living things breath
Explanation:
scientific method is the way scientist used to find new idea and even solution. and also to answer any questions.
steps of scientific method
observation or question researchhypothesis experiment analysis conclusionWhich elements will have the same properties? A. Boron, Carbon, Nitrogen B.Gold, Silver, Titanium C. Beryllium, Magnesium, Calcium D. hydrogen, helium hassium
Answers
Answer:
b
Explanation:
it would be silver and gold hope helps
Watch this video about how cell division works. Then use what you’ve learned to answer the following questions. Part A Cell division is the process of forming new cells from existing cells. Based on the video, explain why cell division is important for the growth of a new baby.
Answers
Answer:
Gunpowder was developed in Postclassil
Explanation:
Answer: Cell division allows for cells to continue to grow and divide. this is important for the growth of a new baby because the baby needs cells in order to grow. as cells replicate, grow, and divide, the baby is able to grow.
How many of the 17 children have arthritis
Answers
Answer:
Why purple guy kill five of the and stuff the in animatronic suit?
What happened if we add normal saline instead of PBS during beta amylase extraction?
Answers
Answer:
hi
Explanation:
Saline is the solution of water and NaCl does not provide the appropriate pH, so enzyme activity is lost, we cannot add saline instead of PBS during beta amylase extraction.
How saline water affects beta amylase extraction?PBS (phosphate buffer solution) is a type of buffer that is suited for beta-amylase activity, which implies that when beta-amylase is extracted using buffer, the enzyme's chemical activity is kept.
When we utilize saline, which is a solution of water and NaCl, the pH of the solution is not acceptable, and the enzymes' chemical activity is destroyed.
As a result, for enzyme/protein extraction, we always employ a buffer solution, which maintains the ph for the proper functioning of an enzyme.
Therefore due to pH conditions enzyme lost activity, and normal saline water can not be used instead of PBS for extraction of beta-amylase.
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Which of these is an abiotic infectious agent?
● Bacteria
●Fungi
● Parasites
● Viruses
Answers
Answer:
A. Bacteria
Explanation:
Hope this helps!
How does mercury change from something benign to something harmful?
Answers
Answer:
Burning coal releases mercury into the atmosphere. It falls into sediments and is converted into methyl mercury by bacteria
Explanation:
Bart believes that mice exposed to microwaves will become extra strong (maybe he's
been reading too much Radioactive Man). He decides to perform this experiment by
placing 10 mice next to a microwave for 10 seconds. He compared these 10 mice to
another 10 mice that had not been exposed. His test consisted of a heavy block of wood
that blocked the mouse food. He found that 8 out of 10 microwaved mice were able to
push the block away. 7 out of 10 of the non-microwaved mice were able to do the same.
What was one of the constants in this experiment?
Answers
Answer:
the mice were able to move the block
Explanation:
how do u fix this sentence ''the man next door never goed to no partys.''
Answers
Answer:
The man next door never goes to any partys.
Explanation:
-capatilize t
- replace "d" with "s" in goed
- replace no with any
You need a dog to work with the police.What traits would you want the dog to have? Why?
Answers
when would a forest be sustainable?
Answers
Answer: B: When supply is greater than demand
Explanation:Hope this helps
Calculate the molarity of 0.75 L of a solution containing 0.83 g of dissolved KCI. A 0.015 M B 0.75 M C 1.1 M D 6.2
Answers
Answer:
A 0.015M
Explanation:
Molarity, which refers to the molar concentration of a solution, can be calculated using the formula:
Molarity (M) = mole (n) / volume (L)
Based on the information provided in this question, the solution contains 0.83 g of dissolved KCI.
We can calculate the number of moles of KCl in the solution by using the formula:
Mole = mass ÷ molar mass
Where atomic mass of; K = 39, Cl = 35.5
Molar Mass of KCl = 39 + 35.5
= 74.5g/mol.
Mole = 0.83g/74.5g/mol.
mole = 0.01114
Approximately, n = 0.011mol
Hence, molarity = 0.011mol/0.75L
Molarity = 0.0146
Molarity = 0.015M
why is forcing the cell to increase the rate of the cell cycle lead to error in DNA replication
Answers
The _______________ has a negative charge. The ______________ is smaller than the other particles and can be found outside of the ___________________, which is another name for the center of the atom. In the center, there are ________________ and ___________________. The __________________ have no charge but weigh a lot compared to the ________________. The proton has a __________________ charge. In order to get the atomic mass, add the number of ________________ and _________________ together
Answers
Answer:
The electron has a negative charge. The electron is smaller than the other particles and can be found outside of the nucleus, which is another name for the center of the atom. In the center, there are protons and neutrons. The neutron have no charge but weigh a lot compared to the electron. The proton has a positive charge. In order to get the atomic mass, add the number of protons and neutrons together.
Explanation:
Answer:
electron
?
nucleus
protons
neutrons
neutrons
electrons
positive
protons
protons
neutrons
(because electrons weigh so little it dosnt make a difference)
Please help u have to do this today
Answers
Answer:
A
Explanation:
Both are igneous because lava/ magma form igneous rocks.
of the cell. *
15) DNA is located in the
O Vacuole
O Nucleus
O Cytoplasm
O Membrane
Answers
The DNA is located in the nucleus which are chromosomes
How might environmental manipulation of a crop have unexpected consequences? a. The new crop may require more water than the original. b. The crop may harm the environment. c. The yield may be reduced. d. All of the above Please select the best answer from the choices provided
Answers
Answer:
D all of the above
Explanation:
just took the test
Environmental manipulation can have both types of consequences - beneficial as well as adverse. At times, these changes can be unexpected too. The correct option is D.
What negative effect does environmental manipulation of a crop have?The crop can have a need for more water as compared to the original if there would be a change in the soil, region or even climate of the crop. An increase in the temperature can affect the availability of water to the crop.
Changes in the soil can result in variation in the availability of minerals required for the growth of plants. This can cause improper health condition of the crop, which will ultimately decrease its yield.
Overuse of fertilizers and pesticides can affect the quality of the soil and also have a negative impact on the crop. It can also be passed on to the consumers of the crop due to bioaccumulation.
Thus, all of the mentioned statements are correct. Hence, the correct option is D.
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What do you think is the colour for happiness?
Answers
Answer:
yellow
Explanation:
Answer:
Yellow is the color of sunshine. It's associated with joy, happiness, intellect, and energy.
Explanation:
Darwin’s explanation for evolution was dependent on which scientific concept?
Answers
Answer:
The existence of variations in population.
Explain what causes chromosomal disorders.
Answers
Answer:
Explanation:
Some chromosomal conditions are caused via way of means of modifications within side the range of chromosomes. These modifications aren't inherited, however arise as random occasions for the duration of the formation of reproductive cells (eggs and sperm). An blunders in cell department known as nondisjunction effects in reproductive cells with an extraordinary range of chromosomes.
yw :)
The picture shows a model of a cell. What is the main function of the cell part labelled Y in the model
Answers
Please helppppp. Which part of the cell is often called "the brain of the cell?
1.nuclear membbrane
2.Nucleus
3.Mitochondria
4.Endoplasmic Reticulum (ER)
Answers
Answer:
i'm confused how you don't know this already but it is nucleus lol
Explanation:
Answer:
2: nucleus
Explanation:
the nucleus holds the cell's dna and contains materials to build mRNA and controls the cell's growth and cell division
the esophagus connects the
Answers
Answer:
The esophagus connects the throat with the stomach, and is used to carry food and liquid from your mouth down to the Gastric.
~
Hope this helps
Have a great day/night
A positive control is a sample in an experiment that produces a known result to compare with the test sample after the same treatment. It is used to control for unknown variables and confirms that all your reagents work.
In this case, the positive control is a cell line expressing wild-type CCR5.
Which of the following do you think will be a good positive control for this experiment?
a) T Cell Helper Line
b) Macrophage cell line without CD4
c) Unedited wild type macrophage
d) Edited macrophage
Answers
Explanation:
Human immunodeficiency virus type 1 (HIV-1) enters target cells by first binding to the primary receptor CD4 and then to a coreceptor, generally one of the chemokine receptors CCR5 and CXCR4 (4). CD4 binding induces structural changes in the envelope (Env) glycoprotein that form and expose the coreceptor binding site. There are two main interactions between Env and coreceptor (13, 14, 25, 50, 51): the base of the third variable loop (V3) engages the N terminus of the coreceptor, while the crown of the V3 loop that includes the highly conserved GPGR/Q arch motif binds to the extracellular loops of the coreceptor, with the second extracellular loop of the coreceptor being particularly important (16, 25, 35, 48, 62). Although some HIV-1 strains are able to use a variety of different G protein-coupled receptors to gain entry into CD4+ cell lines, the great majority of these viruses use CCR5 and/or CXCR4 as coreceptors to infect primary cells (3, 4, 10, 23, 47, 66). CCR3, GPR15, APJ, and FPRL-1 are among the most frequently used alternative coreceptors when overexpressed on cell lines (11, 26, 43, 47, 57). Rare cases of HIV-1 strains that are able to use FPRL-1 and GPR1, but not CCR5 or CXCR4, have been reported (57); however, their in vivo relevance remains unknown.
To characterize the biological processes underlying HIV/simian immunodeficiency virus (SIV) transmission, we recently developed an experimental strategy that permits the identification, enumeration, and molecular cloning of transmitted/founder (T/F) viruses (28, 53). This strategy, which employs single-genome amplification (SGA) and direct amplicon sequencing of HIV/SIV RNA or DNA from the plasma or infected cells, makes it possible to infer the nucleotide sequence of the viral strain(s) that initiated productive infection weeks earlier (1, 28, 29, 37, 53, 58, 67). An important prediction of this approach has been that inferred T/F viruses are fully functional and encode all proteins necessary to establish a new infection. Indeed, this prediction has been borne out in numerous studies, which have shown that T/F viral genes as well as full-length genomes are biologically active. Sets of T/F Envs have been shown to mediate efficient virus entry in single-round infection assays, and they invariably use CCR5 as a coreceptor (28, 34). Similarly, T/F infectious molecular clones (IMCs) of HIV-1, SIVmac and SIVagm all produce replication competent virus that grow to high titers in primary CD4+ T cells (22, 38, 54).
MATERIALS AND METHODS
Amplification of the HIV-1 env gene. Serial plasma samples collected from an acutely infected plasma donor, ZP6248, were purchased from ZeptoMetrix. A total of seven plasma samples were collected between 12 February and 9 March 1997, and viral loads (VLs) were determined by the COBAS Amplicor HIV-1 monitor test.
Sequence analysis. All SGA amplicons were sequenced directly by cycle sequencing and dye terminator methods using an ABI 3730xl genetic analyzer (Applied Biosystems, Foster City, CA). Individual sequences were assembled and edited using the Sequencher program 4.7 (Gene Codes, Ann Arbor, MI). The env sequences were aligned using CLUSTAL W (60), and manual adjustment for optimal alignment was done using MASE (20).