Answer:
Epinephrine initiates a signal transduction pathway that involves the production of cyclic AMP (cAMP) and leads to the breakdown of glycogen to glucose, a major source of energy for cells. But glycogen breakdown is only part of the fight-or-flight response that epinephrine brings about; the overall effect on the body includes increased heart rate and alertness, as well as a burst of energy. Given that caffeine blocks the activity of cAMP phosphodiesterase, propose a mechanism by which caffeine ingestion leads to heightened alertness and sleeplessness.
Explanation:
3. What do prokaryotes and eukaryotes have in common?
A. Both are always single cell organisms
B. Both contain DNA
C. Both have a nucleus
D. Both are complex cells
Answer:
B. Both contain DNA
Explanation:
both contain Dna....is right
Mercury-containing wastes are exempt from hazardous waste regulation as long as they are recycled per the Universal Waste Rule.
A) True
B) False
Answer:
It should be option a
Explanation:
It should be option a
1.Are spindle fibers present during telophase 1?
2.What is happening to the cell membrane in this cell?
Answer:
During telophase nuclear membrane is formed, nucleolus appears and astral rays disappear.
During telophase, the effects of prophase and prometaphase - the nuclear membrane and nucleolus disintegrating are reversed. Two daughter nuclei form in each daughter cell, and phosphatases dephosphorylate the nuclear lamins at the ends of the cell, forming nuclear envelopes around each nucleus.
You are working with an acute slice of mammalian hippocampus in a bath of artificial cerebrospinal fluid In your first experiment, you stimulate the mossy fiber projection with an extremely strong stimulus while patch clamp recording from the postsynaptic neuron. When the presynaptic axons are electrically stimulated, which of the following sequence of events occurs?
a. Opening of voltage gated calcium channels in CA1 neuron dendrites, release of glutamate containing vesicles into the synapse, potassium influx in CA3 neuron
b. Opening of voltage gated sodium channels in dentate gyrus axons, fusion of GABA containing vesicles with the presynaptic membrane, opening of GABA-gated ion channels, chloride influx into CA3 neurons
c. Opening of voltage gated calcium channels in CA3 neuron axons, fusion of glutamate containing vesicles to the presynaptic membrane, opening of voltage gated sodium channels in CA1 neuron dendrites, sodium influx into CA1 neurons
d. Opening of voltage gated calcium channels in dentate gyrus axons, fusion of glutamate containing vesicles to the presynaptic membrane, opening of AMPA receptors in CA3 neuron dendrites, sodium influx into CA3 neurons
Answer:
d. Opening of voltage gated calcium channels in dentate gyrus axons, fusion of glutamate containing vesicles to the presynaptic membrane, opening of AMPA receptors in CA3 neuron dendrites, sodium influx into CA3 neurons.
Explanation:
From the little information given above in the excerpts, it could be seen that, the sequence of events that would occur when the mossy fiber is stimulated with an extremely strong stimulus is what was given above.
AG CLASS
Which of the following distinguishes the institution most likely to provide the level of education needed to become a research plant geneticist?
Iowa Central Community College
Iowa State University
American Society of Agricultural and Biological Engineers
Organic Farming Research Organization
Answer:
No is wrong
Explanation:
Answer:
Iowa State University
Explanation:
Edge 2022, it's not Organic Farming Research Organization, I picked that one and got it wrong.
Which famous political
leader's death was
investigated using
samples of his hair?
Answer:
Napoleon Bonaparte
Explanation:
All samples were found to have similarly high arsenic levels, roughly 100 times that of living people whose hair was included in the analysis for comparison.
What is a molecular clock?
Select one:
ill give 30 points!
The idea that some sections of DNA can accumulate mutations fast while other parts accumulate mutations more slowly.
The idea that some sections of DNA are resistant to mutations and do not have them.
The idea that DNA evidence can be used to support evolution.
The idea that a section of DNA accumulates mutations at a constant rate over time.
Answer:
pretty sure its c (the thrid one)
Explanation:
please help me :( this is due in 5 mins.
A segment of DNA strand has the following bases:
TAC GAT
What is the complementary strand of mRNA?
A: UAG CAU
B: TAG CAT
C: ATG CTA
D: AUG CUA
Answer:
is D: AUG CUA
Explanation:
Please help!
The map shows areas of upwelling. Climate scientists predict that upwelling
may intensify along the western coast of the United States. What effect is
more intense upwelling likely to have on this area?
A. More starved marine species
B. Diminished ocean productivity
C. Fewer marine species
D. More nutrients for photosynthesis
Answer:
I think the answer may be D for you because for me the correct answer was “more thriving fish in the area” I’m so sorry if that isn’t the correct answer though
Explanation:
name two plants that grow from roots,stem and seeds
Answer:
ROOTSThe term root crops refers to any edible underground plant structure, but many root crops are actually stems, such as potato tubers. Edible roots include cassava, sweet potato, beet, carrot, rutabaga, turnip, parsnip, radish, yam and horseradish.
STEMS
Softwood cuttings come from fresh, new growth, usually in spring or early summer. Plants such as dogwoods root well from these types of cuttings.
Aster: This beautiful flowering plant includes nearly 600 species in North America.
Butterfly Bush: This plant roots especially well from cuttings.
SEEDS beans, peas, and pumpkins
Explanation:
One trait a plant can have is either red leaves (R) or brown leaves (o). Another
trait is tall stems (7) or short stems (1). A plant used in a dihybrid cross has
the genotype RrTt. What is the phenotype of this plant?
A. Red leaves, short stems
B. Brown leaves, tall stems
C. Red leaves, tall stems
D. Brown leaves, short stems
Let’s think about mutations in the context of selection and evolution. Normally, random mutations are very rare, but this process can be accelerated by using DNA damaging agents. Imagine you are working with yeast. Normally, high levels of salt kill yeast. However, you are conducting a random genetic screen to find salt-tolerant mutants. You use a DNA damaging agent (like EMS, or UV light) to damage the yeast DNA, then look for growth on plates with salt.
a. Does putting the yeast on salt cause the beneficial mutation? Why or why not?
b. If you screened your mutagenized yeast cell population on caffeine (another substance that normally kills them), could you find caffeine tolerant ones? (assume there is the potential for genetic resistance to caffeine).
a. Does putting the yeast on salt cause the beneficial mutation? Why or why not?
When the logarithmic growth of cells is interrupted by exposure to a 0.5 to 2 Molar salt solution the aueous solution consisting of KCl, NH4Cl, NaCl, MgCl2 are basically mutagenic in yeast .
Stationary phase cells are not mutated by the treatment.
b. If you screened your mutagenized yeast cell population on caffeine (another substance that normally kills them), could you find caffeine tolerant ones? (assume there is the potential for genetic resistance to caffeine).
For normal tolerance to caffiene the sty1 and pap 1 pathways are not necessary, but generally only sty1 is activated by mutation hence making yeast sensitive for caffiene.
Click all of the ways the bearded seal is adapted to live in its environment.
Question 4 options:
small eyes to see in the dark
webbed feet for paddling
hard heads to break ice
blubber to keep warm
sensitive whiskers to feel around ocean floor
large glands for perspiration
good hearing
waterproof fur
Answer:
small eyes to see in the dark
webbed feet for paddling
hard heads to break ice
blubber to keep warm
The ways where the bearded seal should be adapted for living the environment should be small eyes, webbed feet, hard heads, and the blubber.
What is the bearded seal?Bearded seals resulted to prefer the sea ice along with the natural opening via it could made the breathing holes in the thin ice by using the heads or claws.
It gives the bearded seal and have some kind of protection from predators like polar bears at the time of nursing.
Learn more about environment here: https://brainly.com/question/25552412
3) Besides pH, what other soil factors affect producers?
4) What is the main reason plants require water
Answer:
3) Drainage capacity
Soil minerology (Nutrients)
4)To produce their own food i.e. photosynthesis
What happens to the the helpful trait after many generations? pelase help T - T
Answer:
Explanation:
;)
7. Pedialyte is a beverage which contains the same concentration of ions (K , Cl-, and Na ) as found in the plasma. Gatorade and Powerade mimic (although are not identical to) Pedialyte. Therefore, we might expect that consumption of Pedialyte should not significantly alter the osmolarity of the blood. How would you expect the urine production rate in the Pedialyte group to compare to that of the water group
Answer:
Less urine production.
Explanation:
The urine production rate in the Pedialyte group is lower as compare to that of the water group because the presence of K, Cl-, and Na ions. The precise combination of electrolytes and sugars in Pedialyte helps in restoring fluid levels and the nutrients in the body that are lost through sweating, urinating, or vomiting and diarrhea. We know that the presence of sodium ions regulation water and electrolyte balance in the body so there is less urine produced by taking Pedialyte group.
The urine production rate in the Pedialyte group to compare to that of the water group -
Pedialyte group - decreased
water group - increased.
The rate of urine output is the urine production in a unit of time. The normal range of urine output is 800 to 2,000 milliliters per day if you have a normal fluid intake of about 2 liters per day.
Drinking Pedialyte increases the ion concentration in the plasma that causes hyperosmolarity. This is sensed by the hypothalamus and releases ADH that leads to more fluid absorption in later DCT and collecting tubules that leads to decrease urine output. On the other hand, if you drink water, hypoosmolarity in blood plasma which does not sense by the hypothalamus and does not release ADH, and the urine output is more than the previous case.Thus,
The urine production rate in the Pedialyte group to compare to that of the water group -
Pedialyte group - decreased
water group - increased.
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i need help with number 3 thanks
(IM BRANLESTING I FOR GOT HOW TO SPELL IT AND AGAIN THANKS)
Answer:
Two plant groups you could look at are land-based plants and water-based plants.
Explanation:
Land-based plants:
Land-based plants are plants that can be found on land. They tend to be taller in order to absorb as much sunlight as possible. Land-based plants often have roots that are rooted in soil, and take in water and nutrients from there. Land-based plants taken in oxygen and carbon dioxide directly from the atmospheric air around them. In terms of the location of their stomata, stomata can be found on the underside of leaves, where they take in carbon dioxide and release oxygen.
Water-based plants:
Water-based plants can be found either submerged or floating on water. They tend to be broader instead of taller. For instance, their leaves will be broader in order to absorb maximum sunlight. This is because (especially for completely submerged water plants), light does not penetrate as deeply into water, leaving the plant with less light energy to photosynthesize. Water-based plants often have roots that either dig into the soil if they are found at the ocean floor, or hang freely in the water if they float on water surfaces. Unlike land-based plants, water plants, especially those that are fully submerged, take in dissolved carbon dioxide and oxygen gas in the water instead of from the air and atmosphere. The stomata of water-based plants are often found on the upper side of their leaves, in order to have better access to atmospheric oxygen and carbon dioxide.
Four scientists observed an area of land that had been cleared of all trees and bushes to make space for a power line. Each scientist had a different argument about the impact clearing this area of land might have on the bird population living in the ecosystem. Which scientist’s argument demonstrates how the ecosystem will MOST LIKELY be impacted?
Answer:
The ecosystem is adversely affected.
Explanation:
The ecosystem is adversely affected due to clearing of all trees and bird population is also adversely affected because these trees are the source of habitat for these birds. When there is large number of birds in an ecosystem so the bird population automatically increases due to the presence of more habitat for the birds so if all the trees are removed so very little population of birds left in that ecosystem and this action leads to great disturbance in the ecosystem.
Pine
Trees
Shrubs
Mass of Plants
The graph to the left
illustrates the mass of
different types of plants
during succession. Which of
the following best describes
what occurs to the amount
of
grasses in the graph?
Oak
Trees
Grasses
Mosses
Time
It decreases continuously.
It increases continuously.
It increases for a while and then decreases.
It does not change.
Answer:
it increases for a while and then decreases
helphelp help gell help helpp
Which of the following things is not made of wither fermentation?
Cheese
Yogurt
Bread
Peanut butter
Chocolate
Answer:
peanut butter
Explanation:
it's very creamy and thick so I might say it's peanut butter
Select the following statements that are correct about cellular respiration.
Match the following terms with the correct definition.
Answer:
1. A (Central dogma)
3. F ( Peptide)
4. G ( protien)
5. E (Robosome)
6. C (RNA)
Explanation:
That's all I know. If not switch 1 and 5 they might be the same id/k
Hope this helped and have a wonderful day!
PLEASE HELP FAST!!!
(DO NOT USE AS POINTS!!!)
4-6
PLEASE ANSWER RIGHT AND DO NOT ANSWER RANDOM!
Answer: C, D, B
Explanation:
Immediately after an action potential has peaked, which of the following channels will open?
A) Voltage gated potassium channels.
B) Chemically gated chloride channels
C) Voltage gated sodium channels
D) Voltage gated calcium channels
please give a brief explanation for each correct or incorrect
Some students looked at pond water with a microscope. They saw prokaryotic and eukaryotic
organisms. The diagram shows one of the many organisms they saw.
Which best explains what type of organism this is? LT
(2 Points)
Answer:
C. Eukaryotic because it has a nucleus
Explanation:
All living organism have been classified into a wide category called DOMAIN, which consists of Eukarya, Prokarya, and Archaea. Living organisms are classified into each of these domains mostly based on whether or not they possess NUCLEUS in their cells.
Domain Eukarya known as Eukaryotes are made up of organisms that possess a membrane-bound NUCLEUS in their cell. According to this question, some students looked at pond water with a microscope and saw both prokaryotic and eukaryotic organisms. The organism displayed in the attached image is EUKARYOTIC simply because it has a NUCLEUS.
Refer to the Biochemistry in Focus section of your text for this chapter to answer this question. A mutation in Complex I decreases the efficiency of the electron transport chain. However, not all components of the electron transport chain are affected by this mutation. Which component of the electron transport chain will remain unaffected by a mutation in Complex I
Answer:
Complex II
Explanation:
The electron transport chain refers to a group of electron transporters embedded in the inner mitochondrial membrane that transfer electrons from electron donors to electron acceptors which undergo redox (reduction and oxidation) reactions. The energy released during the transfer of electrons is coupled to the transfer of protons (H+) from the mitochondrial matrix into the intermembrane space, generating an electrochemical gradient that is then used to synthesize ATP. Complex I and Complex II are membrane-bound complexes that act as mitochondrial redox carriers. Complex I is a proton pump that uses energy from the electron transfer chain to pump protons, while Complex II sends H+ onto Complex III in the form of the reduced ubiquinol. Complex I receives electrons from NADH and transfers them to ubiquinone, while Complex II directly receives the redox cofactor FADH2 that does not pass through Complex I.
What is a transgenic organism
Answer: An organism whose genetic material has been altered using genetic engineering stuff.
Explanation:
Read through this series of events that lead to cellular respiration, or the production of energy in your body. Put these events in the correct order by numbering them from 1 to 5 in the blank boxes next to the events.
You eat a hamburger and breath oxygen
Oxygen and glucose combine to form carbon dioxide, water, and ATP.
Energy is used by cells in your body to function and grow; you exhale carbon dioxide.
Oxygen goes immediately from your lungs to blood vessels to cells.
Food molecules in the hamburger are broken down into glucose in the digestive system.
Answer:
You eat a hamburger and breath oxygen
Oxygen goes immediately from your lungs to blood vessels to cells.
Food molecules in the hamburger are broken down into glucose in the digestive system.
Oxygen and glucose combine to form carbon dioxide, water, and ATP.
Energy is used by cells in your body to function and grow; you exhale carbon dioxide.
The digestive and respiratory systems work together to provide oxygen and organic compounds to the body, which, through cellular respiration, produce ATP and water and release CO₂. The order is A, D, E, B, C.
Every function in the organism needs the energy to occur.
Different systems work together and are equilibrated to achieve correct functioning.
For instance, the digestive and respiratory systems work together to provide oxygen and organic compounds that are used to produce energy through cellular respiration.
Cellular Respiration processCellular respiration is a process through which cells produce energy by degrading organic compounds.Aerobic cellular respiration depends on the presence of free oxygen, and occurs in the mitochondria.It is a series of reactions by which pyruvic acid (product of glycolysis) turns into CO₂ and H₂O, producing many ATP molecules. GlycolisisRespiration begins with the process of glycolysis, which occurs in the cytoplasm.It does not need oxygen to occur. Glycolysis is the process through which the cell partially decomposes glucose and turns it into pyruvate.
Pyruvate enters the mitochondria matrix and turns into Acetyl CoA.
Krebs CycleIt takes place in the mitochondria matrixAcetyl CoA enters the Krebs cycle through which CO₂ is released and ATP, NADH, and FADH₂ are produced.Oxidative phosphorylationThe process of oxidative phosphorylation is constituted by the electron transporter chain + chemiosmosis.It occurs in the internal mitochondrial membrane. It uses electrons from NADH and FADH₂ to produce ATP and water molecules.
The correct order of events is as follows,
A) You eat a hamburger and breath oxygen
D) Oxygen goes immediately from your lungs to blood vessels to cells.
E) Food molecules in the hamburger are broken down into glucose in the digestive system.
B) Oxygen and glucose combine to form carbon dioxide, water, and ATP.
C) Energy is used by cells in your body to function and grow; you exhale carbon dioxide.
You will learn more about cellular respiration at
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A driver gets lost and drives a winding path through the city. She drives north 20 km, east 40 km, south 40 km, west 40 km, and south 20 km. What is the driver's displacement?
Answer: 160 km
Explanation:
Could someone help with this question?
Answer:
Geology
Morphology
Paleobiology