Answer:
i guess ya
Explanation:
What are the functions of proteins in the cell membrane?
Answer:
For example, plasma membrane proteins carry out functions as diverse as ferrying nutrients across the plasma membrane, receiving chemical signals from outside the cell, translating chemical signals into intracellular action, and sometimes anchoring the cell in a particular location (Figure 4).
Explanation:
Identify the structure,is it RNA or DNA? WHY?
Answer:
what it look like tho
Explanation:
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ill give you a Brainliest if it is right
The steps in the formation of metamorphic rocks are listed below in an incorrect order.
1. Rock is subjected to extreme changes in heat.
2. Rock's internal arrangement of atoms changes.
3. Rock is subjected to extreme changes in pressure.
4. Rocks with new properties are created.
Which of these best shows the correct order of steps in the formation of metamorphic rocks?
A) 1, 3, 2, 4
B) 2, 1, 3, 4
C) 3, 1, 4, 2
D) 4, 2, 3, 1
What can be inferred about the osmosis of water in potato cells?
A. The cells stop gaining water by osmosis in the 0.2M solution, so the concentration of glucose in the potato cells must be greater than 0.2M.
B. The cells stop gaining water by osmosis in the 0.2M solution, so the concentration of glucose in the potato cells must be between 0.1M and 0.2M.
C. In the solutions where the cells lose water by osmosis, the original concentration of water in those cells must be less than the concentration of water in the solutions.
D. In the solutions where the cells gain water by osmosis, the original concentration of water in those cells must be greater than the concentration of water in the solutions.
Answer:
d
Explanation:
BRAINLIEST AND 20PNTS!!
What beneficial role do the bacteria that live in the root nodules of plants play?
A. The bacteria converts sunlight into usable nutrients for the plant.
B. The bacteria converts inorganic nitrogen into usable nitrogen for the plant.
C. The bacteria helps the roots absorb more water from the surrounding soil.
D. The bacteria helps the plant defend itself against predators.
Answer:
B
Explanation:
the bacteria converts inorganic nitrogen into usable nitrogen ammonia for the plant.
Rhizobium bacteria converts inorganic nitrogen into usable nitrogen for the plant.
What are Rhizobium?These are the bacteria living in plant nodules of many leguminous plant.Plant cannot use atmospheric nitrogen to its use.So Rhizobium bacteria converts inorganic nitrogen to ammonium which can be used by plants.Hence, the correct option is B. The bacteria converts inorganic nitrogen into usable nitrogen for the plant.
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which of the following reactions provides the chemical energy for most cell functions?
a. ATP - P --- ADP
b. ATP + P --- ADP
c. ADP - P --- ATP
b. AFP + P --- ATP
Answer:
ATP - P ADP
Explanation:
Here is your answer! ^-^
ATP - P --- ADP provides the chemical energy for most cell functions.
What do you mean by chemical energy ?The bonds of chemical molecules contain energy. Exothermic reactions are those in which chemical energy is released during the reaction, frequently in the form of heat.
The energy in meals is transformed into energy that the body's cells can utilise during cellular respiration.
A new substance may form and energy may be released when the molecules of chemical substances react chemically.
Energy is transferred to ATP during cellular respiration, which transforms glucose and oxygen into carbon dioxide and water.
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what happens to the concentration of oestrogen at ovulation?
Answer:
When oestrogen rises to a high enough level it causes a surge in LH from the pituitary which causes ovulation where an egg is released from the follicle (Day 14 of the cycle). The follicle becomes the corpus luteum and this produces oestrogen and progesterone which inhibit FSH and LH production by the pituitary.
Explanation:
What is the function of xylem
Answer: Xylem is the specialised tissue of vascular plants that transports water and nutrients from the plant–soil interface to stems and leaves, and provides mechanical support and storage. The water‐conducting function of xylem is one of the major distinguishing features of vascular plants
Explanation: hoped this helped
Which of the following molecule is NOT needed for the Calvin Cycle to take place?
a. H2O
b. CO2
c. RuBP
d. NADPH
(5C enzyme)
Answer:
C.
Explanation:
The chemical RuBP, is not even mentioned in that cycle, making it the least viable answer.
H2O is not needed for Calvin cycle to take place.
Option A is the correct answer.
Calvin cycle is the cycle that take place during photosynthesis and it is light depend where Co2 enters the pores of the stomata of the leaf.
It is in three stages.
1. Carbon fixation: Co2 react with with three molecules of the five carbon acceptor molecule (RuBP) to produce ,three molecules of carbon compounds that divide to form three carbon compound (3-PGA) in the presence of rubisco enzyme.
2. Reduction stage: In this stage,6 ATP and 6 NADPH convert six 3-PGA molecules to 6 molecules of three-carbon sugar (G3P). It is a reduction reaction because NADPH lose electrons to a three-carbon intermediate to produce G3P.
3. Regeneration : G3P molecule move to produce glucose, five G3Ps are recycled to produce the RuBP acceptor. This reaction requires ATP.
Therefore, H2O is not included in Calvin cycle.
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1. Fill in the blank spaces with suitable words.
a) The bunching of light back from the surface of a body is____________.
Answer:
reflection please mark me brainliest
why is earth layered how it is
Answer:
the increase in temperature and pressure as depth increases
Explanation:
branliest pls
A regulated process that involves controlling the amount of proteins produced by a gene.
O gene expression
O translocation
O Cellular respiration
O Homeostasis
Compare how the structures of amoebas and Volvox allow them to explore their
environments and obtain energy.
Answer:
Ii like volvo's lol
Explanation:
Define embryonic stem cells. Explain the pros and cons of Embryonic Stem Cells
Answer:
Embryonic stem cells are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage pre-implantation embryo. Human embryos reach the blastocyst stage 4–5 days post fertilization, at which time they consist of 50–150 cells.
Explanation:
Adult Stem Cells
Embryonic Stem Cells
Induced Pluripotent Stem Cells
Pros
Trans differentiate and and reprogramming of these cells is possible but is not well studied
Thought to be less likely to be rejected if used in transplants
Success has already been demonstrated in various clinical applications
Can maintain and grow for 1 year or more in culture
Established protocols for maintenance in culture
ESCs are pluripotent cells that can generate most cell types
By studying ESCs, more can be learned about the process of development
Abundant somatic cells of donor can be used
Issues of histocompatibility with donor/recipient transplants can be avoided
Very useful for drug development and developmental studies
Information learned from the “reprogramming” process may be transferable for in vivo therapies to reprogram damaged or diseased cells/tissues
Cons
Limitations on ASC ability to differentiate are still uncertain; currently thought to be multi or unipotent.
Cannot be grown for long periods of time in culture
Usually a very small number in each tissue making them difficult to find and purify
Currently there is no technology available to generate large quantities of stem cells in culture
Process to generate ESC lines is inefficient
Unsure whether they would be rejected if used in transplants.
Therapies using ESC avenues are largely new and much more research and testing is needed
If used directly from the ESC undifferentiated culture prep for tissue transplants, they can cause tumors (teratomas) or cancer development
Methods for ensured reproducibility and maintenance, as differentiated tissues are not certain.
Viruses are currently used to introduce embryonic genes and has been shown to cause cancers in mouse studies
It takes 83 mL of a 0.45 M NaOH solution to neutralize 235 mL of an HCI solution. What is the concentration of an HCI solution?
Answer:
168ml
Explanation:
It takes 83 mL of a 0.45 M NaOH solution to neutralize 235 mL of an HCI solution, than the concentration of HCl will be 0.158 mL.
What is concentration?The amount of a chemical substance in a mixture is expressed by the substance's concentration.
What is neutralize?
The interaction of H+ ions with OH- ions produces water in a neutralization reaction, which occurs whenever an acid as well as a base reacts to form water and salt.
Calculation of concentration.
Given data:
[tex]V_{1}[/tex] = 83 mL
[tex]C_{1}[/tex]= 0.45 M
[tex]V_{2}[/tex] = 235 mL
[tex]C_{2}[/tex] = ?
Concentration of HCl solution will be calculated by using the solution.
[tex]C_{1} V_{1} = C_{2} V_{2}[/tex]
where, C is concentration and V is volume.
Put the value of given data in above equation.
[tex]C_{2} =C_{1} V_{1} / V_{2}[/tex]
[tex]C_{2}[/tex] = (0.45 M)(83 mL) / 235 mL
[tex]C_{2}[/tex] = 0.158 mL.
Therefore, the concentration of HCl will be 0.158 mL.
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DNA’s job is to _______using a code made up of bases.
Answer: form
Explanation:
How does the tapetum work
Answer:
The tapetum basically acts as a retroeflector that reflects light right back along it's path.
Explanation:
what is it called when an mRNA strand is not copied correctly??
Answer:
It is called a genetic mutation whenever a mRNA strand is not copied correctly. This leads to things like cancer or tumors.
List two ways in which salt is different from chlorine.
Answer:Chlorine — the standard chemical in pools — is used to keep harmful bacteria away from humans. In chlorine pools, the chemical is purchased in highly concentrated levels and added to the water. In salt water pools, the natural process of electrolysis turns the salt into chlorine.
Explanation:
Offspring that are the result of sexual reproduction are best described by which of the following?
a The offspring contain fewer chromosomes than either parent because of meiosis
b The offspring contain all of the dominant genes found in the grandparents
c The offspring are genetically identical to the biological mother and father
d The offspring are genetically unique and contain a new combination of genes
Answer: d.
Explanation:
what are the answers to these 3 questions?
Answer:
1. A, 2. C, 3. B
Explanation:
number 1 is A, number 2 is C, number 3 is B
A scientist is trying to discover a new treatment to stop cancer cells from
dividing. In the cancer cells, which of these processes will stop if the
treatment is successful?
Answer:
mitosis is the correct answer
PLEASE HELP!! DNA mutations and cancer activity
Answer:
nosexd
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dx
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dx
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Explanation:
what group of people study or research carbon footprints??
Answer:
The study by Jones and RAEL director Daniel Kammen, a UC Berkeley
Explanation:
Hope this helps!
ill give you a brainliest if it is right
Answer:
1,4,3,2
Explanation:
Answer:
Sedimentary rocks include common types such as chalk, limestone, sandstone, clay and shale. Sedimentary rocks are formed from overburden pressure as particles of sediment are deposited out of air, ice, or water flows carrying the particles in suspension.
Explanation:
Brainleist for answering #14 and #15
Answer:
14.The relationship between photosynthesis and cellular respiration is such that the products of one system are the reactants of the other. Photosynthesis involves the use of energy from sunlight, water and carbon dioxide to produce glucose and oxygen. Cellular respiration uses glucose and oxygen to produce carbon dioxide and water. To emphasize this point even more, the equation for photosynthesis is the opposite of cellular respiration.
15.photosynthesis:grass celluar:cricket moths,plants,owl
Explanation:
Answer:
Photosynthesis creates glucose, and cellular respiration creates carbon dioxide.
Explanation:
grass,and oak tree perform photosynthesis, and cricket,moth,and owl perform cellular respiration.
hope this helps! :)
2. _____ diversity increases the chances that individuals will possess favorable traits needed to survive
changing environmental conditions.Immersive Reader
a. Species
b. Ecosystem
c. Biome
d. Functional
e. Genetic
Answer:C
Explanation:
During which phase of the cell cycle does DNA replication occur?
What is taxonomy? How is taxonomy based on evolution?
Answer:Explanation: taxonomy was invented with kingdoms, phylum, orders, families, genus, and species before evolution was proposed. Classical taxonomy is based on observable characteristics of organism, not on Darwinian evolution. Cladistics the most modern form of taxonomy is based on Darwinian evolution.
Explanation:
What are the pathways of the carbon cycle?
The pathways of the carbon cycle cellular respiration and all exergonic processes produced in the cell, through which substances oxidize and chemical energy is released.
When chemical energy is released?All exergonic processes produced in the cell, through which substances oxidize and chemical energy is released, are grouped under the name of cellular respiration, but to break down an organic molecule the cells employ, mainly dehydrogenations that can be carried carried out in the presence or absence of atmospheric O2 oxygen.
There are therefore two types of breathing and they are aerobic respiration and anaerobic respiration. The latter also called fermentation. Aerobic respiration (oxidative phosphorylation)
Use molecular O2.It degrades glucose to CO2 and H2OExergonicRecovers about 50% of chemical energyPresent in most organisms.It uses enzymes located in the mitochondria.Therefore, The pathways of the carbon cycle cellular respiration and all exergonic processes produced in the cell, through which substances oxidize and chemical energy is released.
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