Answer:
In metaphase I, the tetrads line themselves up at the metaphase plate and homologous pairs orient themselves randomly. In anaphase I, centromeres break down and homologous chromosomes separate. In telophase I, chromosomes move to opposite poles; during cytokinesis the cell separates into two haploid cells.
17.) Which of the following statements is FALSE about mutations?
a. They are almost always harmful
b. They can be caused by exposure to radiation
C. Some mutations can be beneficial
d. They change the genetic code by inserting, deleting, or substituting bases
a student models moon phase she holds a foam ball on a stick in front of her body and stands in front of the light as shown. the student uses herself to represents earth. she turns her body slowly to phases.
Answer:
D- Diagram 4
the full moon is represented in diagram four.
What is needed for a fossil to form? Select all that apply.
1. The organism must first get stuck in rock.
2. The soft tissue of the dead organism must be eaten by scavengers before the bones can be preserved.
3. The tracks or burrows of an organism must be filled with sediments before they are disturbed.
4. The organism's body must be covered by sediment or another substance before its body decays.
The correct answer is:The organism's body must be covered by sediment or another substance before its body decays.
What is the explaining statement for the same ?Explanation: For a fossil to form, the organism's body must be rapidly buried in sediment, ash, or another substance before it can decay or be eaten by scavengers.
Over time, the minerals in the surrounding sediment or substance can replace the organic material in the bones, forming a fossil. Tracks, burrows, and other trace fossils can also form when sediment or another substance fills in the impressions left by an organism before they are disturbed.
Getting stuck in rock is not necessarily a requirement for fossilization, as fossils can also form in sedimentary rock or other types of rock.
Lack of oxygen: Decay requires oxygen, so organisms are more likely to fossilize in environments where oxygen is limited or absent, such as in deep water, bogs, or quicksand.
Low acidity: Acidic environments can dissolve bones and other hard parts, so fossils are more likely to form in environments with neutral or basic pH levels.
Lack of disturbance: Fossils are more likely to be preserved if they are not disturbed after burial. For example, if an organism's body is exposed to air or water before it can be buried, the bones may be scattered or destroyed.
Overall, fossilization is a rare and complex process that requires a combination of specific conditions to occur. As a result, the fossil record provides only a partial and biased glimpse into the history of life on Earth.
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Explain the unique information trace fossils and coprolites can help scientists infer about an organism
They're trace fossils, not animal bodies. This coprolite can reveal an animal's diet. Scientists can determine what animal dropped coprolites based on its shape, size, and location.
What are coprolites?Fossilized feces are known as coprolites. Because coprolites provide information for the animal's behavior rather than its shape, rather than being considered body fossils, they are instead categorized as trace fossils.
A coprolite can provide researchers with information about an animal's nutrition. Scientists are able to determine the species of animal that may have been responsible for the droppings by analyzing the shape and size of the coprolites as well as the location where they were discovered.
Because coprolites have a propensity to deteriorate so quickly, we only find them very infrequently. They are the marine species that are found the most frequently. The presence of coprolites in fish and reptiles is very common.
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What 3 letters on mRNA is used for the start codon?
Answer:
The codon AUG, commonly known as the start codon, specifies the amino acid methionine. As a result, during protein synthesis, methionine is the first amino acid to dock in the ribosome.
OAmalOHopeO
What is the source of most salt in the ocean?
A.fish
B.human activity
C. Wind
D. Rocks on land
Answer:
D. rocks on land
Explanation:
Salt in the ocean comes from two sources: runoff from the land and openings in the seafloor. Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks. This releases ions that are carried away to streams and rivers that eventually feed into the ocean.
Answer:
Option D Rocks on land
Explanation:
Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks. This releases ions that are carried away to streams and rivers that eventually feed into the ocean.
Two species benefit from interaction with each other
Example: A hummingbird gets food from the nectar of a flower and then spreads the nectar’s pollen, helping the flower reproduce.
: One species benefits from the interaction, and the other species is harmed but not necessarily killed
Example: Ticks feed on other animals’ blood, which can hurt the other animals.
: One species benefits from the interaction, and the other species is neither helped nor harmed
Example: Egrets rely on cows to stir up dirt and bring food to the surface, but cows do not benefit.
Answer:
The answers are mutualism,parasitism,and commensalism
Explanation:
these are correct on edge
Answer:
1. mutualism
2. parasitism
3. commensalism
Explanation:
hope this helps :)
explain how pH and temperature can affect enzyme activity
Please help has to be due in 20 mins. Thank you for helping me.
Answer:
Enzyme activity depends on many factors such as Substrate concentration, enzyme cofactor, enzyme inhibitors, pH, and temperature. pH and temperature are two important factors that directly affect the activity of an enzyme as follows:
1. pH
Each enzyme has the specific optimal pH that allows it to perform its function to its fullest. The enzymes are the protein made up of the interaction of the hydrogen bond in the side chain of the protein. if there is any change from optimum pH, the enzyme activity decreases until it stops working.
2. Temperature:
Each enzyme has its own optimal temperature. Any modification or change in temperature results in the activity of an enzyme, and it also leads to the denaturation of an enzyme as it is made up of protein.
Without the discovery of magnetic reversals recorded on the ocean floor, scientists
a
could not confirm the usefulness of sonar
b
could destroy the hypothesis of continental drift
c
could not provide a mechanism for moving continents
d
could explain how the seafloor was being destroyed
Answer:
Could not obtain evidence for the hot spot hypothesis. Which of course helps scientist know where under water volcanoes might Be. This is helpful in learning more about sea life and the sea floor and what goes on in an ecosystem located under water.
HAHAHA GOTTIE
Explanation:
an
Which of the following is the amplitude
of this wave?
B. B
A. A
C. C С
D. D
1. What is the contour interval on this map?
Answer:
100 is the contour interval of this map
What 6 elements make up all lifeforms on earth?
Explanation:
oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus.
What is a eukaryote?
Question 2 options:
organism that does not have a nucleus
organism that does have a nucleus
organism that produces its own food
Answer:
an organism that has a nucleus
Explanation:
What is a eukaryote?
1 organism that does not have a nucleus
2 organism that does have a nucleus<<
3 organism that produces its own food
4 organism that is ancient
Sections of a chromosome that code for a trait are called what?
Answer:
genes ( tell me if I am wrong thx! )
Explanation:
PLZ ANSWER ASAP I NEED HELP will mark brainliest >_
Peter is complaining of stomach pain and constant hunger. Peter’s doctor diagnoses him with a worm infection. Peter feels hungry because the worm is absorbing food from his intestines.
Peter most likely has an infection from a(n)
tapeworm.
leech.
planarian.
marine worm.
Answer:
A) Tapeworm
Explanation:
got it right on edge nuity
Peter is complaining of stomach pain and constant hunger as he was diagnosed with a worm infection.
Peter feels hungry because the tapeworm is absorbing food from his intestine as tapeworm begins to feed off your body's nutrients to grow once it invades the body.How tapeworm infection occurs?Tapeworm infection is caused by ingesting food or water contaminated with tapeworm eggs or larvae.When tapeworm hatches and attaches itself to your intestine, it starts feeding off body's nutrients causing increase in apatite (hunger increases).It grows by reproducing proglottids ( chain looking body part) and the cycle continues.Planaria upon causing infection feeds on blood cells hence can not cause apatite.Leech and marine worm can not invade the body like tapeworm and planaria.To learn more about tapeworm infections:
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A population of birds is blown by a storm to an island off the mainland.
The island has very few trees, and the bird population on the island
develops new nesting behaviors. Mainland birds nest in trees, island birds
nest on the ground. After a long period of time, the island birds are
reunited with the mainland birds, it is observed that the two populations
can no longer interbreed. This is an example of: *
Behavioral isolation
Geographical isolation
Nonrandom mating
All of these
define disaster management
During translation small organelles called __ read the mrna sequence ?
Answer:
thjs may be wrong but I am not sure ribosomes
what is fibre and it types
Answer:
Fibre is the indigestible parts of plant foods, such as vegetables, fruits, grains, beans and legumes. It is type of a carbohydrate that helps keep our digestive systems healthy.
Where is the greatest amount of the world's carbon found?
Answer:
You find the most amount in the ocean because oceans absorb it.
Explanation:
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⠀⠀⢀⣴⣿⣿⣿⣿⣏⠀⠀⠀⠀⠀⠀⢹⣿⣧
⠀⠀⠙⢿⣿⡿⠋⠻⣿⣿⣦⡀⠀⠀⠀⢸⣿⣿⡆
⠀⠀⠀⠀⠉⠀⠀⠀⠈⠻⣿⣿⣦⡀⠀⢸⣿⣿⡇
⠀⠀⠀⠀⢀⣀⣄⡀⠀⠀⠈⠻⣿⣿⣶⣿⣿⣿⠁
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⢠⣶⣿⣿⠋⠀⠀⠉⠛⠿⠿⠿⠿⠿⠛⠻⣿⣿⣦⡀
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Please define the terms, don’t copy and paste. I’m giving 15 points for it
4. The solar energy that is absorbed and reradiated from Earth's surface as heat is mostly
(with a longer wavelength).
O gamma radiation
O ultraviolet radiation
O infrared radiation
Fossils are often hardened remains of organisms that once lived, such as a bone or tooth. Which characteristic of sedimentary rock makes
it likely for fossils to be found in this type of rock?
A. An organism's remain become hardened when covered by melted rock.
B. Organisms are changed into rock by high temperature once they are no longer living.
C. The remains of organisms are buried under layers of sand, shells, and bits of rock.
D. The bones of an organism are pulled below Earth's surface during an earthquake.
Answer:
C as most fossils are created in the ocean
Explanation:
If i'm wrong please tell me if i'm right please mark me brainliest
What scientist discovered the process of transformation?
Answer: Fred Griffith
Explanation: :)
What is active transport in your own words
Answer:
the movement of a chemical substance by the expenditure of energy against a gradient in concentration
Explanation:
Describe gastrulation. Why are the three layers important in development?
Explanation:
Cells in each germ layer differentiate into tissues and embryonic organs The ectoderm gives rise to the nervous system and the epidermis, among other tissues
Limiting factors that affect large, dense populations more than small, scattered
populations are called 
_______
Answer:
Density dependant limiting factor
Explanation:
could a woman with O- blood type be the mother of an AB- child? explain your answer.
What question led scientists to separate plants and fungi into two distinct kingdoms?
A. Does the organism have cells?
B. Does the organism reproduce?
C. Does the organism grow on the ground?
D. Does the organism use sunlight to make food?
Answer:
A
Explanation:
yes because each plant have a cell if they don't they might die.
Describe the difference in pressure agaisnt your cheeks when they are full of air versus when its released