Answer:
False
Explanation:
Amphibians evolved about 365 million years ago from a lobe-finned fish ancestor. As the earliest land vertebrates, amphibians were highly successful for more than 100 million years until reptiles took over as the dominant land vertebrates. The earliest well-known amphibian, Ichthyostega, was found in Late Devonian deposits in Greenland, dating back about 363 million years. The earliest amphibian discovered to date is Elginerpeton, found in Late Devonian rocks of Scotland dating to approximately 368 million years ago.
Why is it important for cells to buffer solutions against rapid changes in pH? What does a buffer do?
Answer:
Water's polarity gives it the ability to dissolve both ionic compounds nad other polar molecules. Why is it important for cells to buffer solutions against rapid changes in pH? Buffers dissolved in life's fluids play an important role in maintaining homeostasis in organisms.
Explanation:
Need help ASAP! Will give brainliest to right answer
Answer choices:
Prophase
G1
Telophase
Metaphase
S
Cytokinesis
G2
Anaphase
Answer:
g2
Explanation:
have a nice day!
Which organelle turns solar energy into chemical energy? Question 1 options: Golgi Apparatus Endoplasmic Reticulum Chloroplast none of the above
Answer:
Structure of the Golgi bodies in a plant cell. A typical plant cell organelles include Cell wall, Cell membrane,converts water, carbon dioxide, and light energy into nutrients for lack the chloroplast pigments, they are found in non-photosynthetic parts
Explanation:
The organelle that turns solar energy into chemical energy is chloroplast. The correct option is C.
Chloroplasts are organelles that may be found in plant cells and some types of algae. They are in charge of the process known as photosynthesis, which transforms solar energy into chemical energy.
The chlorophyll pigment in the chloroplasts absorbs sunlight and transforms it into chemical energy in the form of glucose via a series of intricate processes.
This process is the main method by which solar energy is transformed and stored in living organisms, and it is essential for the synthesis of food and oxygen in plants. Chloroplast is the right response as a result.
Thus, the correct option is C.
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Your question seems incomplete, the probable complete question is:
Which organelle turns solar energy into chemical energy? Question 1 options:
A. Golgi Apparatus
B. Endoplasmic Reticulum
C. Chloroplast
D. none of the above
Are there organelles that only exist in animal cells? If so, state it and it's
function.
which characteristic allows carbon to form chains and rings eith other carbon atoms
Ali is AB blood type and Sarah is also AB blood type. What is the chance they will have a child with blood type A?
Answer:
25 percent
Explanation:
Answer:
yesss
Explanation:
if parent 1 is AB and and parent 2 is also AB blood Group then thier child's possible Blood Group is A, B, AB
Thus, Ali and Sarah's Child can be with blood type A
-TheUnknownScientist
When would a cell need to use active transport instead of passive transport?
Choose 1 answer:
To move water to the external environment
To take in nutrients that have a lower concentration outside the cell
To transportions with a high internal cell concentration out of the cell using channels
To diffuse oxygen across the cell membrane
Answer:
d i think
Explanation:
When would a cell need to use active transport instead of passive transport To diffuse oxygen across the cell membrane
what are the function of cell membrane ?The cell membrane or plasma membrane is a thin selectively semi-permeable membrane which surrounds the cytoplasm, the primary function of the is to provide protection the integrity of the interior of the cell.
The cell membrane is otherwise called as multifaceted membrane that envelopes a cell's cytoplasm and help the cell to maintain the its shape.
Cell membrane is made up of Proteins and lipids where the mix or ratio of proteins and lipids can vary depending on the function of a specific cell.
Phospholipids are the most important components of cell membranes which are arrange to form a lipid bilayer and certain substances can diffuse through the membrane to the cell's interior.
some cell organelles are surrounded by cell membranes, The nucleus and mitochondria have its own membrane.
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Which two materials are part of soil?
O A. Pieces of metal
B. Once-living matter
C. Trees and grass
D. Small bits of rock
SUBMIT
Answer:
C
Explanation:
because it comes out by nature
Answer:
B and D
Explanation: A.P.E.X
An arthropod's body may have as many as ____
sections
Three
Four
Five
Six
Answer:
3
Explanation:
;)
Tons of points help asap
______is the most important condition for fossilization.
a. Rapid burial
b. A changing environment
c Quick decomposition
Answer: a changing environment
Explanation: A changing environment is the most important thing for fossilization. It will freeze the fossil and it will get stuck the the ground or in a rock. The answer to the question is a changing environment.
What causes a protein to be released from the ribosome
Answer:
The release factors cause the ribosome peptidyl transferase to add a water molecule to the carboxyl end of the most recently added amino acid in the growing polypeptide chain attached to the P-site tRNA. This causes the polypeptide chain to detach from its tRNA, and the newly-made polypeptide is released.
A stop codon causes the ribosome to separate from the mRNA molecule and release the protein for the cell to utilize. The relationship between transcription (DNA to mRNA) and translation (mRNA to protein) in prokaryotic cells is so strong that.
What protein to be released from the ribosome?The ribosome peptidyl transferase adds a water molecule to the carboxyl terminus of the most recently added amino acid in the expanding polypeptide chain connected to the P-site tRNA as a result of the release factors.
Protein release factors (RFs) recognize stop codons located in the A site of the small ribosomal subunit and initiate peptide release to the ribosome.
Therefore, As a result, the freshly produced polypeptide is released and the polypeptide chain separates from its tRNA.
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What is the name of the enzyme that is needed to make glucose from CO2 and hydrogens
Answer:
enzyme RuBisCO
(im not sure but i think its this)
Pls answer as many questions of the remaining numbers as you know of the water cycle. Please help I forgot
Answer:
Explanation:
4. Hot water
5. Steam
6. Cold air
7. a dew type thing
those are the only ones i know. I hope this helps you!!
which is (summer, winter, fall, spring) please please help if you know! (14 points given)
Answer:
1.Spring 2.Fall 3.Winter 4.Summer
Explanation:
I think this is right because the tilt of the Earth means the Earth will lean towards the Sun (Summer) or lean away from the Sun (Winter) 6 months later. In between these, Spring and Autumn will occur. The Earth revolves around the Sun. ... The Earth's movement around the sun causes the seasons.
I hope this will help, but if you feel unsure of my answer the explanation will probably point to the correct answer.
What do scientists call the S-layer in archaebacteria?
proteins or glycoproteins that make up the cell wall
proteins or glycoproteins that play a part in reproduction
proteins or glycoproteins that help make ribosomes
proteins or glycoproteins that make up the cell membrane
Answer:
proteins or glycoproteins that make up the cell wall
Explanation:
I need help pls it science btw
Answer:
a light year is 2 seconds
During chemical weathering what can happen to the type of rock that has undergone chemical weathering.
A. No new rock is created just smaller in size. B. A new rock is produced that is different from the original rock. C. A new rock is produced that is the same as the original rock. D. A new rock is produced that is larger than the original rock
Answer:
A new rock is produced that is different from the original rock.
Explanation:
During chemical weathering, a new rock is produced that is different from the original rock.
Chemical weathering is the chemical decomposition of rocks to form sediments and soils. A large chunk of rock combines with water, air and other chemical materials. This cause chemical action and a new substance is produced. This process is known as chemical weathering.Physical weathering is the breaking down of rocks into smaller fragments.
Chemical weathering leads to the formation of a new rock is produced that is different from the original rock that has undergone chemical weathering is formed.
Weathering refers to the process by which rocks break down. The weathering of rocks may be chemical, physical or mechanical. Chemical weathering refers to the breakdown of rocks due to the action of chemical agents.
During chemical weathering a new rock is produced that is different from the original rock that has undergone chemical weathering is formed.
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The science of heridity.
a. Allelic frequency
b. Genotyping
cGenetics
di Karyotyping
please help 25 pointsss
PLSSSSSS HELPPPPPP!!!!!!!!!!!!!!!!
What are two characteristics
of surface currents that
distinguish them from other
currents?
I am not too sure but
Surface currents are driven by the interactions between sun and wind.Which is a sustainable practice? Operating wind farms or clear cutting or flood irrigation or overfishing
Answer:
A
Explanation:
EDG 2020
An example of sustainable practice is the operating wind farms. Thus, the correct option will be A.
What is Sustainable practice?Sustainable practices can be referred to as the practices which support ecological, human, and economic health and also the vitality. Sustainability usually presumes that all the available resources are present in finite amount, and should be used conservatively and wisely with a view to have long-term priorities and consequences of the ways in which the available resources are used.
Wind power or wind farms are one of the most efficient technology to produce energy in a very safe and environmentally sustainable manner. It is zero emissions, local, inexhaustible, competitive source of energy and it also creates wealth and jobs for a large group of people.
Therefore, the correct option will be A.
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Rb is an important protein for controlling cell proliferation by blocking entry into S phase. How does it exert its effect?
Answer:
The main function of the RB protein is to inhibit the transition from the G1 to S phase. Its activity depends on its phosphorylation state: if RB is not phosphorylated (active state), it is bound to the transcription factor E2F, preventing its translocation to the nucleus and the activation of genes necessary for DNA synthesis; and if it is phosphorylated, by cyclin-CDK complexes, E2F is released and cell proliferation occurs.
Explanation:
Retinoblastoma (Rb) was the first tumor suppressor described and, as we know today, mutations in its structure determine a large number of cancers. Structurally, we speak of a large and multifunctional protein; which is organized in different domains. The activity of this protein is regulated, mainly, by phosphorylation at multiple sites described over the years and is involved in control mechanisms of the cell cycle, apoptosis and senescence.
Winston studies a topography map that shows camping and hiking areas. Winston is most likely using the map for which purpose? science engineering government recreation
Answer: D Recreation
Explanation:
camping and hiking are recreational activites so D is the correct answer
Winston is most likely using the map for recreation. Thus, the correct option for this question is D.
What is a Topography map?A topography map is characterized as a type of map which indicates detailed graphic representations of features that appear on the Earth's surface.
Examples of such features in topographic maps may include roads, buildings, urban development, railways, airports, names of places and geographic features, national and international boundaries, etc.
Recreational activities like hiking and camping are most probably related to features that are undoubtedly based on the topographic maps of the geographical locations.
Therefore, Winston is most likely using the map for recreation. Thus, the correct option for this question is D.
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Which of the following would be expected to have plentiful access to potable water?
a. Africa
b. China
C. Europe
d. South America
Answer:
c. Europe
Explanation:
I just went to quizlet.com
Europe is expected to have plentiful access to potable water.
What is Potable water?Thus is the type of water which is suitable for human consumption. Europe is believed to have plentiful access to potable water.
This is because of less pollution access to aquifers which provide clean sources of water for consumption by the people hence the reason why option C was chosen as the most appropriate choice.
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Which feature separates humans from other primates?
smaller brain size
bipedalism
use of tools
complex social skills
Answer:
Bipedalism
Explanation:
took the test
what are two purposes of the cell cycle
Answer:
The most basic function of the cell cycle is to duplicate accurately the vast amount of DNA in the chromosomes and then segregate the copies precisely into two genetically identical daughter cells.
Explanation:
The purpose of cell cycle, To regulate the cell division according to need of a cell. It helps in dividing and growing the new cells in multicellular organisms.
What are the different stages of cell cycle ?A series of events occurs in a cell leads to the duplication of DNA and division of cytoplasm to produce two daughter cells called as cell cycle.
It consist up two phases interphase and M phase.
Interphase is the cell's resting phase, where cell prepare its self ready for cell division, it consist of 3 sub phases G1, S, G2.
In gap 1, metabolically active cell continues to grow without DNA replication.
In S phase, DNA replication occur and the centriole divides into two centriole.
G2 phase, the RNA, proteins, other macromolecules needed for other cell organelle multiplication.
M or mitotic phase cell under go mitotic division to give rise to equal chromosome number containing progeny.
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KEY:
a. carbohydrate
b. fats and oils
C. protein
d. nucleic acid
20. contains the bases adenine, guanine, cytosine, and thymine
21. the 6-carbon sugar, glucose
22. polymer of amino acids
23. glycerol and fatty acids
24. enzymes
25. long-term energy storage
26. genes
27. plant cell walls
PLEASE MATCH THEM
the muscle that has the best capability to slide the mandible forward relative to the skull is the:
a. digastric muscle (anterior belly)
b. temporalis muscle
c. external pterygoid muscle
d. internal pterygoid muscle
Answer:
C
Explanation:
The lateral or external pterygoid muscle pulls the mandible forwards.
which do you prefer to use organic fertilizer or inorganic fertilizer explain
Answer:
Organic fertilizers continue to improve the soil long after the plants have taken the nutrients they need. Therefore, the longer your soil is fed with organic fertilizers, the better its composition and texture. So, while inorganic fertilizer is cheaper in the short term, it adds less to the soil in the long term.
If there are 5 g of carbon on the reactants side, how many g of carbon should you end with?
Answer:
69,420
Explanation:
Answer:
It is 69,420 easy
Explanation: