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Related Questions
. What is the source of most ocean pollution?
a. activities on land
b..climate changes
C. aquatic animals
d. none of the above
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Answer:
a
Explanation:
because humans cause most pollution such as cars,littering ,and toxic gases
Termites are insects that live in colonies. In a colony, the king and a queen are responsible for reproduction. Workers spend most of their time caring for the other termites and building the nest. Soldiers protect the nest from attacks.
The organization of the termite colony is an example of which benefit of social behavior?
foraging
protection
reproduction
division of labor
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Answer:
division of labor I think
Answer:
D
Explanation:
What process is used (Mitosis or Meiosis) in the development of a zygote to a multicellular
animal?
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Answer:
Mitosis I think?
Explanation:
A difference between a Class I and a Class II tRNA synthetase is (select all that apply):
a. the Class I synthetase reaction requires a transesterification reaction not necessary in the Class II reaction.
b. the Class I synthetase uses the 2' OH of the 3' end of the tRNA as a nucleophile and the Class II uses the 3' OH.
c. the Class I synthetase requires ATP as a cofactor and the Class II does not.
d. the Class II synthetases are typically monomeric, whereas the Class I enzymes frequently function as multimeric protein complexes.
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Answer:
Option b is the correct answer.
Explanation:
The 2' OH of each 3' end of the tRNA is used as a nucleophile by Class I synthetase, whereas the 3' OH is used by Class II.
The Class I aminoacyl-tRNA synthetase attaches amino acids to the 2'-OH group of the tRNA's 3'-end ribose residue, whilst the Class II synthetase attaches amino acids only to the 3'-OH group of the tRNA's 3'-end ribose residue. Both Class I and Class II enzymes conduct the transesterification process and the need of ATP.
What we have is option d is incorrect because, Class I enzyme is typically monomeric, while the Class II enzyme is dimeric or multimeric in nature.
Which of the following is a density independent factor which can affect a population
A. Food
B.weather
C. Shelter
D. Water
Pls help
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Answer:
D
Explanation:
I am not confident...... It might be D. Water
the letters A, T, C, and G get highlighted in the people’s names. DESCRIBE the significance of these letters.
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Answer:
Explanation:
If you are talking abou the movie GATTACA, then the reason is that A, T, G, and C are DNA coding letters so it would sort of make sense to highlight those to complement or enhance the movie's meaning (its also part of the movie's name)
Where do we find most of our usable freshwater, and what can we do to keep it clean.
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Answer:
we find most of our cleanest water in freshwater rivers and lakes and we keep it clean by using processing plants
What moves particles like oxygen into cells ?
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describe muscle metabolic rate of penguins
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Manatees and seals both share some phenotypic similarities that are adaptations to an aquatic environment. However, seals evolved from a bearlike carnivore and manatees evolved from a hoofed mammal. This example shows that __________.
a. evolution is not always unidirectional.
b. evolution can occur rapidly for one species while the other species stays relatively unchanged.
c. similarity is a good predictor of how long it has been since two species shared a common ancestor.
d. evolution is not always divergent.
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They are about as different as a leopard and a cow.
Meaning both are mammals of roughly similar size, and sharing a vaguely similar habitat. That’s the end of similarities.
Seals are carnivorous and manatees are plant eaters, and taxonomically they are in different orders. Seals spend much of the time on land, while manatees are completely aquatic. Seals have thick layer of fat and are adapted to Arctic water, while manatees, despite their roly-poly appearance, have almost no fat and do not handle cold water well at all. Here is the closest a manatee ever gets to an iceberg.
Manatees and seals both share some phenotypic similarities that are adaptations to an aquatic environment. However, seals evolved from a bearlike carnivore and manatees evolved from a hoofed mammal. This example shows that Evolution is not always divergent.
vi. What is water pollution?
vii. State three causes of water pollution/sources of water
viii. Give the effect of water pollution.
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vi. Water pollution occur when harmful substances like chemicals or microorganisms contaminate streams, revers, lakes and other water bodies.
vii. Causes of water pollution are: industrial wastes, oil pollution and acid rain.
viii. Contaminated water becomes unfit for consumption by humans and cattle. As the result, there is drastic reduction of the fish population. Water pollution results in increase case of water borne diseases like cholera, diarrhea, etc.
I hope this helps :)
Answer: Water pollution is the act of polluting water bodies with pollutants and waste products.
Causes of water pollution;
I. Sewage: City sewage system
ii. Chemical waste: Industries and ships at harbors.
iii. Excreta or farces: Human and Animal dung.
Effects of Water pollution;
I. It supports the use of pathogens that can cause diseases.
ii. It makes water unfit for human consumption.
iii. It can kill aquatic organisms.
Iv. It produces unpleasant odors.
v. It can accumulate in the human body and become toxic later.
vi. It serves as a medium for breeding pathogens
vii. Food chain is affected.
viii. It leads to migration of animals.
ix. It leads to rapid vegetative growth of water plants which makes fishing and movement impossible. eg. Algae bloom.
Really hope it helps you and others
:) :)
:
2. what are the differences between Mitosis and meiosis
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Answer:
The differences between Mitosis and meiosis is Mitosis involves the division of body cells, while meiosis involves the division of sex cells. The division of a cell occurs once in mitosis but twice in meiosis. Two daughter cells are produced after mitosis and cytoplasmic division, while four daughter cells are produced after meiosis
8. Farmer Tom soon wanted to start breeding his plants so that they are resistant to disease while producing
more fruit per plant. Which plants should the farmer cross to get the desired (wanted) combination of
traits?
Plant Variety
Fast growing
Resistant to
a. 1 and 2
b. 2 and 4
C. 1 and 3
d. 3 and 4
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Answer:
A) 1 and 2
Explanation:
a) A plant with the genotype DR/dr (representing the allele combination on each chromosome) produces gametes. List the genotypes of the gametes that can be produced and label each gamete as parental or recombinant.
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Answer:
Dd Rr Dr Rd
Explanation:
Which of the following best describes the function of the human nervous
system?
A. The nervous system collects and responds to information about
the internal and external environment.
O B. The nervous system protects internal organs and assists with
movement.
C. The nervous system protects the body against infection and helps
regulate body temperature.
O D. The nervous system transports oxygen and nutrients to the body's
tissues.
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Answer:
A. The nervous system collects and responds to information about
the internal and external environment.
Explanation:
A fossil can form when
A. An organism leaves an imprint in sediment, which hardens into stone.
B. groundwater minerals seep into preserved bone and shell materials.
C.an organism is trapped in sticky plant resin that hardens into amber.
D. All of the above
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Answer:
b
Explanation:
formation of corals which are fossils too
Answer:
D, or its just A
Explanation:
PLEASE HELP ASAP!! How neurotransmitters carry nerve impulses across the synaptic cleft
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Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. Neurotransmitters bind to the membrane of the dendrite. The binding allows the nerve impulse to travel through the receiving neuron
Another way of thinking is
Neurons talk to each other across synapses. When an action potential reaches the presynaptic terminal, it causes neurotransmitter to be released from the neuron into the synaptic cleft, a 20–40nm gap between the presynaptic axon terminal and the postsynaptic dendrite (often a spine)
Hope this helps =)
Explanation: Neurotransmitters like to travel across the synapse between the axon and the dendrite of the next neuron. They then attach to the membrane of the dendrite. This connection makes it possible for the nerve impulse to travel through the receiving neuron.
Why does the Equator and the South Pole have different air temperature?
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Red hair, blue eyes, and height are all examples of...
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Answer:
Examples of polygenic traits
I need someone who studies biology and genetics.
Is a pig crossed with a chimp possible, I just read an article about this and the person who had the idea was someone with the last name MCkarther PH.D. it made the news.
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Answer:
The cross between two different species is called hybridization. The truth is that, for hybridization to occur, the species in question must have a certain kinship with each other, that is, they must belong to the same family of animals. An example is the cross between tigers and lions, pigs and wild boars, donkeys and donkeys, etc. Now, if there is no such familiarity between species, the truth is that hybridization will not be possible, which is the case of pigs and chimpanzees with each other.
11. A goat eats away all the leaves of a small plant
(balsam). However, in a few days, new leaves could be seen
sprouting in the plant again. How did the plant survive
without leaves?
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Answer:
chromosome boost
Explanation:
Its been told that researchers say that it may grow even bigger even when its been eaten
The movement of molecules across a cell membrane using a membrane transport protein and cellular ATP energy, generally moving the molecules from a region of low to high concentration, is called
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The movement of molecules across a cell membrane using a membrane transport protein and cellular ATP energy, generally moving the molecules from a region of low to high concentration, is called facililated transport
Answer:
Active transport: moving against a gradient
To move substances against a concentration or electrochemical gradient, a cell must use energy. ... Primary active transport directly uses a source of chemical energy (e.g., ATP) to move molecules across a membrane against their gradient.
Explanation:
(meow) <3
If the number of photosynthetic organisms on Earth decreased drastically, which would happen as a result?
A. Less water would be available on Earth’s surface.
B. Less solar energy would reach Earth’s atmosphere.
C. More oxygen gas would be found in Earth’s atmosphere.
D. More carbon dioxide gas would be found in Earth’s atmosphere.
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D. More carbon dioxide gas would be found in earth’s atmosphere
Explain why bacteria are most suitable for genetic engineering
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Answer:
Bacteria were the first organisms to be genetically modified in the laboratory, due to the relative ease of modifying their chromosomes. This ease made them important tools for the creation of other GMOs.
Carbonic anhydrase is an enzyme found in the cytoplasm of a cell. You genetically modified the gene which produces the mRNA for carbonic anhydrase to now include a signal sequence. What will happen when carbonic anhydrase initially binds to a ribosome
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Answer:
Explanation:
Carbonic anhydrase modification is a promising strategy for improving the potency and stability of carbonic anhydrase, which is used to expedite CO2 uptake from flue gases. Carbonic anhydrase can be genetically engineered to increase CO2 conversion, absorption of CO2 from a gaseous state into bioactive compounds, and mineral synthesis.
When carbonic anhydrase attaches to a ribosome, the carbonic anhydrase will now be synthesized at first by the free ribosome, after which the ribosome will become a bound ribosome and the protein will be present in the rough Endoplasmic reticulum when the synthesis is complete.
In this case, when carbonic anhydrase initially binds to a ribosome - Carbonic anhydrase initially will be synthesized by free ribosomes, but then these ribosomes then will become bound ribosomes and the protein will be in the rough ER when synthesis is complete
Carbonic anhydrase is an enzyme that helps the rapid conversion to carbonic acids from carbon dioxide and water with protons and bicarbonate ions.
Classified as a metalloenzymeThe modification in the carbonic anhydrase enhances the potency and stability of the enzyme.It can be modified to increase CO2 conversion, absorption of CO2 from a gaseous state into bioactive compounds, and mineral synthesis.Thus, In the case of carbonic anhydrase bound to a ribosome, at first, the carbonic anhydrase will be synthesized by the free ribosome and later the ribosome will become a bound ribosome and the protein will be present in the rough Endoplasmic reticulum once the synthesis process completes.
Learn more about carbonic anhydrase:
https://brainly.com/question/19885123
5) The following picture is of a single organism that has been Gram stained and is viewed under oil immersion on the compound light microscope. What is the reason for a single organism appearing like this after being Gram stained
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Hi. You have not submitted any images about the microorganism the question refers to. This makes it impossible for me to answer your question. However, I will try to help you as best I can.
Gram stain is a test done to find out whether the bacteria are gram negative or gram positive. In this test, the bacteria are submitted to a certain type of dye and then are observed under a microscope. If the bacteria is gram positive, it will be purple in color. If the bacteria is gram negative, it will be red in color.
This is because after they are subjected to the violet dye, both types of bacteria absorb the color of the dye. However, before being observed under the microscope, the bacteria are washed with alcohol. Alcohol removes the dye from the gram negative bacteria, leaving them reddish. On the other hand, in gram positive bacteria, alcohol dehydrates the cell wall, compressing the pores and making the cell wall impermeable, preventing the dye from being released and, therefore, leaving the bacteria with a purple color.
What country is most likely to be in stage 4of population growth with a low birth and death rate?
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What kind of rock is most Karst topography found in?
A)Limestone
B) Slate
C) Sandstone
D) Granite
Answers
Answer:
limestone
Explanation:
Karst is most strongly developed in dense carbonate rock, such as limestone, that is thinly bedded and highly fractured. Karst is not typically well developed in chalk, because chalk is highly porous rather than dense, so the flow of groundwater is not concentrated along fractures.
Answer: answer is A Limestone
Which of the following processes is not primarily caused by humans?
A. air pollution
B. the greenhouse effect
C. thinning of the ozone layer
D. increased carbon dioxide levels
.
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Answer:
D
Explanation:
A,B,C all caused by human. But D is less
Answer:
D
Explanation:
from my own understanding,we are not the only ones on this planet there are other animals
MY
A bicycle tire pump has a piston with area 0.38 in. If a person exerts a force of 29 lb on the piston while inflating a tire, what pressure does this
produce.on the air in the pump?
.
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Answer:
OMGGGG WANNA WORK ON THIS TOGETHER I NEED THIS ONE TOOOOOO