Answer:
Due to no resistance.
Explanation:
Most mosquitoes perish when DDT chemical was sprayed the first time because these mosquitoes are vulnerable to the DDT chemical and there is no resistance present in their body against this chemical. DDT chemical is an insecticide which is used against insects or pests that causes damage to human, organisms and crops. DDT was first synthesized in 1874 by the Austrian chemist named Othmar Zeidler.
“Explain how chemical energy for use in the cell is generated by electron transport and chemiosmosis”
PLEASE HELP!!
*50 points to whoever can answer that question and draw a flowchart, thank you*
Answer: The ETC is the last part of cellular respiration. In the first steps of cellular respiration (glycolysis and Krebs cylce), electrons are freed from glucose derived molecules. In the ETC the electrons are passed on through a series of proteins in the inner membrane of the mitochondria. The electrons in a sense 'flow' to lower energy levels (see image), they lose energy in the process.
Energy produced by H+ travelling via ATP synthase and down a concentration gradient is used by chemiosmosis. ADP is phosphorylated with this energy to create ATP.
What is Chemiosmosis?Chemiosmosis is the passage of ions along their electrochemical gradient through a semipermeable transmembrane domain structure. Adenosine triphosphate is created when hydrogen ions pass a membrane during photosynthesis or cellular respiration. This is a significant example.
The process of ions (often H+ ions, commonly referred to as protons) diffusing across a membrane that is selectively permeable is known as chemiosmosis. Chemiosmosis produces a concentration gradient of a diffusing ion from across membrane, similar to osmosis. Potential energy that can perform work is present in concentration gradients.
Thus, energy produced by H+ travelling via ATP synthase and down a concentration gradient is used by chemiosmosis. ADP is phosphorylated with this energy to create ATP.
Learn more about Chemiosmosis, here:
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Q.2. Describe the different phases of meiotic prophase – I. Mention the chromosomal events during each stage.
Prophase-I occurs over a long duration and involves several complicated changes in meiotic cell division. It is important because genetic recombineiion and variation in sexually reproducing organism occurs due to the events of this phase.
EXPLANATION:❈ Leptotene —
➥ The chromatin network opens out and threads become clear.
➥ The chromosomes are thin, slender and long.
➥ Chromosome number is diploid.
❈ Zygotene —
➥ Corresponding chromosomes become intimately associated.
➥ The process of pairing is known as synapse. It is so exact that pairing is not merely between corresponding chromosomes but between corresponding individual units.
➥ The chromosomes become shorter and thicker.
❈ Pachytene or Pachynema —
➥ The synaptic chromosomes become very intimately associated.
➥ The pair of chromosomes becomes short and thick.
➥ Crossing over occurs at this stage. Chiasmata are clearly seen.
❈ Diplotene —
➥ Homologous chromosomes start separating from one another.
➥ Chiasmata tend to slip out of the chromosomes. This is known as terminalisation of chiasmata.
➥ Chromosomes start separating out but the separation is not complete.
➥ Nuclear membrane and nucleolus start disappearing.
❈ Diakinesis —
➥ The bivalents condense further and get randomly distributed.
➥ The separation of paired chromosomes is almost complete.
➥ Terminalisation of chiasmata is almost complete.
➥ Nuclear membrane and nucleolus disappear.
where do babies come from
Answer:
storks that deliver them on your front door step
Explanation:
Please I beg you help me. Contrast solids,liquids, and gases on the molecular level
gas vibrate and move freely at high speeds. liquid vibrate, move about, and slide past each other. solid vibrate (jiggle) but generally do not move from place to place.
Compare the processes of anaerobic respiration in muscle and plant cells.
Answer:
Both plants and animal perform anaerobic respiration without the use of oxygen however in plants when the glucose is chemically reacted to produce energy it also produces ethanol and carbon dioxide while in animals when the glucose is chemically reacted to produce energy it also produces lactic acid and carbon dioxide
Explanation:
Why cells divide and what happens to genetic material during cell division.
Biologically speaking what is the only purpose of reproduction
Answer: To prevent extinction
Explanation: This is to say the main purpose of reproduction is for the continuation of species.
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❥What is Photosynthesis...?
Answer:
It is the process where by plants manufacture their own food by using raw material such as carbon (iv) oxide, water and sunlight.
Answer:
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Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
Eukaryotes contain _______________________
A. membrane-bound organelles.
B. toxins.
C. cell lipozyroids
Answer:
A. membrane-bound organelles.
Explanation:
Answer:
A is your answer
Explanation:
How does bursting of animal cells take place
Answer:
Swelling and bursting of cells is also known as lysing. This happens when the concentration of solutes inside the cell is greater than the concentration of solutes outside the cell. It has to do with diffusion and osmosis. A high solute concentration relates to a lower water concentration. Since molecules like to diffuse from areas of high concentration to areas of low concentration, water will rush into the cell where the water concentration is lower causing it to swell and lyse.
Explanation:
What type of reproduction involves forming offspring from two
parents?
a Asexual
b Sexual
C Mitosis
int?
d Replication
Answer:
Sexual
Explanation:
Sexual reproduction involves two parents and produces offspring that are genetically unique. During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote. Meiosis is the type of cell division that produces gametes.
Hope it helps
Answer: Sexual, I believe.
Explanation:
If it were Asexual, it'd only involve one parent. Mitosis has daughter cells have the same number of chromosomes as parent cells (heavy emphasis on cells as in plural cells.) And replication is just copying a cell.
Forgive me if I'm wrong!
The difference between pinocytosis and receptor-mediated endocytosis is that _____. Question 14 options: pinocytosis can concentrate substances from the extracellular fluid, but receptor-mediated endocytosis cannot. pinocytosis is nonselective in the molecules it brings into the cell, whereas receptor-mediated endocytosis offers more selectivity. pinocytosis brings only water molecules into the cell, but receptor-mediated endocytosis brings in other molecules as well. pinocytosis increases the surface area of the plasma membrane, whereas receptor-mediated endocytosis decreases the plasma membrane surface area.
Answer:
The difference between pinocytosis and receptor-mediated endocytosis is that pinocytosis is nonselective in the molecules it brings into the cell, whereas receptor-mediated endocytosis offers more selectivity.
Explanation:
Pinocytosis and receptor-mediated endocytosis are two types of endocytosis.
The first one consists of plasmatic membrane invaginations that capture extracellular fluid with different nutrients and sends it to the inside of the cell in vesicles. The second one, receptor-mediated endocytosis, consists of receptors on the outside of the plasmatic membrane and clathrin proteins on the interior side of the membrane. When the receptors are in contact with its specific molecule, a vesicle surrounded by clathrin proteins, is formed transporting specific molecules to the cell's interior.
How is upwelling important for marine organisms?
Answer:
Because the deep water brought to the surface is often rich in nutrients, coastal upwelling supports the growth of seaweed and plankton. These, in turn, provide food for fish, marine mammals, and birds. Upwelling generates some of the world's most fertile ecosystems.
Explanation:
Answer:
Upwelling is very important for marine organisms because these nutrients fertilize surface waters, encouraging the growth of plant life. Upwelling plays an important role in the movement of marine animals.
Hope this helps! :)
10 points for each valid answer! Thanks.
There are many technologies that reduce the amount of carbon emissions into our atmosphere. Identify some examples of these technologies.
Answer:
Biomass Energy
Explanation:
Biomass energy is energy generated or produced by living or once-living organisms. The most common biomass materials used for energy are plants, such as corn and soy, etc. The energy from these organisms can be burned to create heat or converted into electricity.
Hope this helps! :)
Ok, do we live in or on earth?
Answer:
On, we live on the surface of Earth.
If we lived in it, we'd be near the core, or literally inside the earth's many layers.
Hope that helps! :)
-Aphrodite
Explanation:
Which molecules would you expect to find at the top of the diagram?
Answer: Oxygen. Oxygen because both plants and animals need oxygen to breath. When the inhale its carbon dioxide but when they exhale its oxygen.
Explanation: im so sorry if its wrong i did a test on tath like two weeks ago sorry ◑﹏◐
Pls help question is in picture
Answer:
"It prevents the two populations from interbreeding" I just took the test.
Explanation:
Predict the change in gene frequencies as a result of this change to gas furnaces.
What is the independent variable of great white sharks travelling distance?
Answer:
Each year, great white sharks migrate over long distances from their feeding grounds off the central California coast to other feeding grounds far away in the Pacific Ocean. ... That's one reason they migrate from one feeding ground to another, to take advantage of the seasonal bounty.
It's though that a shark can travel up to 50 miles in one day. While we cannot know this for certain as sharks have never been tracked this way, 50 miles is a good estimate
Pleasee help it’s due today
Answer: 18
Explanation:
Answer:
yeah its 18, the other guy is right.
Explanation:
just count the dots
can anyone help me with this it would really help me out right now
Answer:
I think it's insects ....
how many plant species live in the understory of the long leaf pines?
A:900
B:54
C:800
D:157
Answer:
54 i think
Explanation:
MARK ME PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZzWhich of the following efforts is used in the enforcement of the Kyoto
Protocol?
A. Trading carbon credits among countries
B. Monitoring the ozone hole over Antarctica
C. Banning aerosols in every country
D. Banning CFCs worldwide
A granite monument has a volume of 25,365.cm. The density of granite of 2.7 g/cm. Use this information to calculate the mass of the monument to the nearest tenth
Answer:
=68485.5 g
follow me plz
HELP!!!! What are two ways information is sent to control body conditions?
Molecules that do not contain carbon are called inorganic.
true or false
Answer:
The answer is false
Explanation:
because most carbon are harmful and are added by humans
1. The amplitude of a sound's wave determines the sound's
a) pitch
b) loudness
C) speed
d) frequency
Answer:
D, frequency
Explanation:
Answer:
A. frequency
For each condon ,find the correct tRNA
The mitochondria is an organelle used for the purpose of cell _______________.
a)respiration
b)replication
c)rejuvenation
d)recitation
Answer:
a)respiration
Explanation:
Cellular respiration takes place in the mitochondria and it basically makes energy for the cell.
Pls help question is in picture
Answer:
im pretty sure its d
Explanation:
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