Answer:
Parallel veins in the leaf
Explanation:
The leaf veins run parallel to one another.
What evidence do fossils provide for how life has changed throughout Earth's history?
Answer:
Fossils document the existence of now-extinct species, showing that different organisms have lived on Earth during different periods of the planet's history. They can also help scientists reconstruct the evolutionary histories of present-day species.
Explanation:
Hopes this helps!
Use the drop-down menus to select the names of the labeled structures.
A:
B:
Answer:
A is stamen B is petal
Explanation:
Please indicate the correct number of NADH molecules made during electron
transport and oxidative phosphorylation.
3
1
0
2
Answer:
3
sort of a trick question. but the process starts off with 3 NADH the rest are FADH. and no more NADH are produced so, 3.
when can experimental growth happen
Answer:
Exponential growth may occur in environments where there are few individuals and plentiful resources, but when the number of individuals becomes large enough, resources will be depleted, slowing the growth rate.
Exponential growth may occur in environments where there are few individuals and plentiful resources, but when the number of individuals becomes large enough, resources will be depleted, slowing the growth rate
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What is the answer to this question?
Answer:
DDDDDDDDDDDDDDDDDDDDDDDDDD
Answer:
The answer is C.
Explanation:
This is because for A, this statement says nothing about corundum being yellow which means that this doesn’t apply and is incorrect. For B is pretty much the same as A, this statement about corundum doesn’t say anything about it being able to flavor or being flavorful. Lastly for D, the fact that corundum is hard means it would be impractical and probably impossible to use it as pencil lead because, all lead it doing with a pencil is being crushes and ground into the paper as you write.
Hope this helps.
The pancreas produces all of the following digestive enzymes except:
A. Pepsin
B. Trypsin
C. Chymotrypsin
Answer: the answer is C
Explanation:
Pancreatic proteases (such as trypsin and chymotrypsin) - which help to digest proteins.
How are transitional fossils evidence to support the process of natural selection?(1 point)
A) They show intermediate steps in the evolution process.
B) They show that most species have not changed over long periods of time.
C) They show plants and animals that once existed but do not exist now.
D) They show that every species of animals developed separately.
Answer:
1. Individuals with thicker fur had a survival advantage in the cold...
2. Random mating
3. The green skin color is being selected over blue skin color.
4. DNA.
5. They show intermediate steps in the evolution process.*
6. Different islands had very different food resources available...
7. Those who have traits that help them survive are able to reproduce...
8. It makes them unrecognizable to the immune system
9. The exposure of human populations to less UV light required...
10. The correlation between air pollution and white moth predation
11. It is a biological process that leads a population to have a widespread...
12-16 Essays
Explanation:
Good luck ♡
Transitional fossil evidence shows intermediate steps in the evolution process. So, the correct option is A.
What do you mean by Fossil?Fossils may be defined as the preserved remains, or traces of remains, of ancient organisms. They are dead and organic remains of past organisms.
Transitional fossil evidence would show intermediate forms of a species and they changed and accumulated adaptations at a slow pace. These are remnants of an organism that came in the version of the current species.
Therefore, Transitional fossil evidence shows intermediate steps in the evolution process.
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An animal with a larval form that disperses by drifting in ocean currents and an adult form that is attached to a surface is most likely to exhibit ______ as a larva and ______ as an adult. bilateral symmetry . . . bilateral symmetry bilateral symmetry . . . be asymmetrical radial symmetry . . . radial symmetry radial symmetry . . . bilateral symmetry bilateral symmetry . . . radial symmetry
Answer:
Bilateral symmetry as a larva
Radial symmetry as an adult
Explanation:
Bilateral symmetry refers to the division of the animal through a longitudinal plane, int two mirror-image, right and left halves, as seen in organisms such as insects, reptiles or in man. Animals with bilateral symmetry have anterior and posterior halves (head and tail), dorsal and ventral (front and back), and right and left sides. Most animals are bilaterally symmetrical. Animals with bilateral symmetry are best suited for active lifestyles involving streamlined and directional motion.
Radial symmetry refers to the arrangement of body parts around a central axis, just like rays on a sun, ie.they have bodies that seem to radiate outwards from a central point. Animals that are radially symmetrical have top and bottom surfaces only but no left and right sides, or front and back sides. Animals that have radial symmetry are best suited for sedentary lifestyles and are usually attached to some surface (sessile)
An animal with a larval form that disperses by drifting in ocean currents and an adult form that is attached to a surface is most likely to exhibit bilateral symmetry as a larva and radial symmetry as an adult.
which of the following statements is accurate for DNA replication in your cells but not PCR
Answer:
Ligase is essential.
Explanation:
The statements that is accurate for DNA replication in your cells but not PCR is that ligase is essential
For better understanding let's explain why ligase is essential
Ligases Enzyme is very essential in DNA replication. it is use for DNA metabolism. They help in catalysis by joining of nicked DNA which is very much needed in in DNA replication. In DNA repair pathways, Ligase is used in the re-synthesis of DNA. It is found that in higher organism, it is of different types..Ligase is not essential in PCR due to the fact that it is not needed.
From the above we can therefore say that the answer The statements that is accurate for DNA replication in your cells but not PCR is that ligase is essential is correct
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Using the terms and phrases provided below, complete the concept map showing
the evolution of early life-forms.
chloroplasts
fossils
prokaryotes
cyanobacteria
life on land
2.5 billion years ago
endosymbiosis mitochondria
ozone
eubacteria
Earliest life-forms
were
(1. Prokarotes
which include
which left
which became
archaebacteria
which indudes
010
that were formed
8.
which generated
010101010
oxygen
that originated
through
that formed
5.
(10.
which enabled
6.
Evolution refers to the process where complex life forms such as plants and animals originated from simple life forms(prokaryotes) over a long period of time.
What is evolution?Evolution refers to the process where complex life forms originated from simple life forms over a long period of time.
The chart given describes the process of evolution from early life forms.
Earliest life-forms were Prokaryotes which include archeobacteria and eubacteria.
Archeobacteria includes cyanobacteria which generated oxygen that formed ozone which enabled life on land.
Prokaryotes left fossils that were formed 2.5 billion years ago.
Prokaryotes became chloroplasts and mitochondria that originated through endosymbiosis.
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What occurs when a pure gaseous substance is heated?
Please answer fast!
Answer:
its molecules start moving at a much faster speed and this consequently causes an increase in pressure within the container holding the gas. If the container is not strong enough, the activity of the gas molecules is likely to cause it to burst
hope this helps
Explanation:
Why does the lake need to be older than the canyon for the spillover theory to work?
Answer: Over thousands of years, the water filled one basin and then spilled over into the next, like a series of bathtubs overflowing.
Explanation:
..........fodder crop
called as queen of fodder crop
Alpha fodder crop
called as queen of fodder crop
which substances needed for photosynthesis is carried into a leaf from the stem
Answer:
water
Explanation:
The main substances needed for photosynthesis are carbon dioxide and water. Carbon dioxide enters the leaves through tiny openings on the leaf called stomata. The water is pulled up from the ground through the roots, up the stem, and into the leaves.
What molecule is all of this based on?
Answer:
carbon
Life is based on carbon; organic chemistry studies compounds in which carbon is a central element. The properties of carbon make it the backbone of the organic molecules which form living matter. Carbon is a such a versatile element because it can form four covalent bonds.
Two protein kinases, PK1 and PK2, work sequentially in an intracellular signaling pathway.You create cells that contain inactivating mutations in the genes that encode either PK1 or PK2 and find that these cells no longer respond to a particular extracellular signal.You also create cells containing a version of PK1 that is permanently active and find that the cells behave as though they are receiving the signal even when the signal is not present.When you introduce the permanently active version of PK1 into cells that have an inactivating mutation in PK2, you find that these cells also behave as though they are receiving the signal even when no signal is present.
A.From these results, does PK1 activate PK2, or does PK2 activate PK1? Explain your answer.
B.You now create a permanently active version of PK2 and find that cells containing this version behave as though they are receiving the signal even when the signal is not present.What do you predict will happen if you introduce the permanently active version of PK2 into cells that have an inactivating mutation in PK1?
Answer:
a. PK2 activates PK1
b. no response would be produced
Explanation:
Kinases are enzymes known to phosphorylate different substrates, thereby activating/inactivating them. In this case, a mutation that produces a constitutively (permanently) active PK1 kinase is itself able to continue the signaling pathway, independently of whether or not PK2 is present. This constitutive mutation shows that PK1 is recruited to continue signaling events within the cell and, therefore, PK1 activation is downstream in the signaling pathway. Conversely, cells containing active PK2 and inactive PK1 would be unable to continue the signaling pathway since PK2 activation is upstream of the induction of PK1, and thereby these cells cannot respond to the signal (PK2 activation).
Match each clade to the unique innovation(s) that characterize it.
Reptiles and Birds, Mammals
Ecdysozoa
Chordates
Eukaryotes
Opisthokonts
Deuterostomes
Match each of the options above to the items below.
NotochordNotochord
Endoskeleton
Nucleus + mitochondria
Single flagellum
Amniotic egg
Ecdysis
Answer:
The correct answer is -
Notochord= Chordates
Endoskeleton= Deuterostomes
Nucleus+mitochondria= Eukaryotes
Single flagellum= Opisthokonts
Amniotic egg= Reptiles, birds, and mammals
Ecdysus= Ecdysozoa
Explanation:
The notochord is a flexible rod-like structure that is present in all chordates in their embryological stage and gives its name Chordata. It gives support through the length of the body and present between the nerve cord and digestive tube.
All vertebrates especially deuterostomes have an endoskeleton made up of bones or cartilage.
Nucleus and mitochondria are two double-membrane structures present in all eukaryotic cells and organisms.
Opisthokonts have a characteristic feature to have flagellated cells. These organisms have a single posterior flagellum. Amniotic eggs are produced by birds and reptiles only.
Which organism is not extinct
Answer:
humans and deer
What are the closest astronomical bodies to earth?
Answer:
The Moon, Venus and Mars are the planets nearest to the Earth.
what's is pharamacolg
Explanation:
It's a branch of medicine and pharmaceutical sciences concerned with drug or medicine action. Where a drug may be defined as any artificial, natural, or endogenous molecule which exerts a biochemical or physiological effect on a cell, tissue, organ or organism.
Pharamacolog is the branch of medicine concerened with the uses,effects and modes of action of drugs
ayers.
Which statement is accurate?
O Layer C is younger than layer A.
O Layer D has an older relative age than layer C.
O If a geologic event tilted these layers, layer B would
no longer be the oldest.
O It is possible to determine the absolute age of layer C
with the information given.
Answer it’s A
How does competition affects behavior of species
Answer:
The way organisms compete with each other determines species distributions, population dynamics, community structure, food webs, and social dominance hierarchies. ... These stressors affect the way that organisms compete with each other and their ability to survive and co-exist.
Explanation:
Consist mainly of neuron cell bodies
Answer:
Ganglia are composed mainly of neuron cell bodies (somata) and dendritic structures. They are the intermediary connections between the peripheral and central nervous systems.
Most fossils are of what
Answer:
anything
Explanation:
George Box, a famous statistician, once said, "All models are wrong, but some are useful.” What did George Box mean by this statement?
Answer:
The 2nd part, "But some are useful" - simplifications of reality can be quite useful. They can help us explain, predict and understand the universe and all its various components. The idea of this quote is that every single model will be wrong, meaning that it will never represent the exact real behaviour.
George Box, a famous statistician, once said: "All models are wrong, but some are useful" he made an aphorism stating that mathematical models are flawed.
What is an aphorism?Maxim or sentence that, in a few words, explains a rule or principle of moral significance; apothegma, saying. “Short and succinct text, foundation of a fragmentary and unsystematic style in philosophical writing.
With this information, we can conclude that George Box, a famous statistician, once said: "All models are wrong, but some are useful" he made an aphorism stating that mathematical models are flawed.
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when a plant doesnt have enough water, it will wilt and____.
the amount of carbon dioxide will increase.
the amount of carbon dioxide will decrease.
the amount of oxygen will increase.
the rate of photosynthesis will increase.
Answer:
the rate of photosynthesis will increase
Explanation:
Earths orbit is an almost circular repeating path around the sun. Earth is held in its orbit by gravity or asteroids?? Please HELP
Answer:
earth is held in its orbit by gravity
Explanation:
Because the earth is orbiting by gravity not asteroid Because asteroids will cause a disaster
Microbial food fermentation is often performed as a preservation method to inhibit the growth of food spoilage microorganisms that may be present in or on the food. The fermentation process often leads to an overall pH decrease of the food to levels below 4. This drop most likely causes many ________ to be inhibited.
Answer:
This question lacks options, options are:
A. Acidophiles B. Alkaliphiles C. Neutrophiles
The correct answer is A. This drop most likely causes many acidophiles to be inhibited.
Explanation:
Microbial fermentation is one of the basic biotechnical processes for the efficient formation of active substances. Fermentation uses fungi, bacteria or cell cultures to transform raw materials into chemicals. Acidophiles is usually bacteria and other very simple organisms that are capable of developing in conditions of too low a pH for most forms of life. Each microorganism has a pH range in which it can grow and a well-defined optimum pH. Depending on the pH, we find acidophiles (1.1 - 5.5), neutrophilic (5.5 - 8.0) and alkaline (8.5 - 11.5) microorganisms, which grow well in acidic, neutral and alkaline pH respectively. Fermentation is carried out to prevent the development of other microorganisms that can alter the quality of the food. Anaerobic digestion is a microbial fermentation in the partial or total absence of oxygen that gives rise to a mixture of gases, in which methane and carbon dioxide are mainly found. Anaerobic microorganisms mainly obtain their energy through the use of fermentation pathways, where organic compounds such as acids and alcohols, among others, basically serve as final electron acceptors. Bacteria, in carrying out these processes, are conditioned by some physical and chemical factors, which enable their proper development, these factors are: loads of organic matter, volatile fatty acids, temperature, alkalinity, nutrients and the presence of N and P , among others.
The digestion of food in the absence of oxygen and release of oxygen is called fermentation.
Microbes that perform the fermentation are usually anaerobic bacteria.
Microbial food fermentation is often performed as a preservation method to inhibit the growth of food spoilage microorganisms that may be present in or on the food. The fermentation process often leads to an overall pH decrease of the food to levels below 4. This drop most likely causes many acidophiles to be inhibited.
Acidophiles or acidophilic organisms are those that thrive under highly acidic conditions.
The lower ph makes the food acidic, due to acidic in nature the bacteria are not able to survive in that conditions.
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Memories about one's own life are called:
self-recall
historical memories
myopic visions
autobiographical memories
Burning changes an object's:
Answer:
Look, texture, size, shape
Explanation:
I think that should be the answer but u didn't give me options so I think im right