What evidence do paleobotanists look for that indicates the movement of plants from water to land? (A) waxy cuticle to decrease evaporation from leaves (B) loss of structures that produce spores (C) sporopollenin to inhibit evaporation from leaves (D) remnants of chloroplasts from photosynthesizing cells
Answers
The evidence paleobotanists look for that indicates the movement of plants from water to land are waxy cuticles to decrease evaporation from leaves.
What is evidence paleobotanists looking for?According to a recent study, which explains how plants became the first major animals to colonize the land, plants went from living in water to inhabiting land as a result of gene transfer they inherited from bacteria.The DNA from soil bacteria was transferred to algae, according to the researchers, who included Gane Ka-Shu Wong from the University of Alberta in Canada, allowing plants to live on land.According to the research, which was published in the journal Cell, plants acquired bacterial genes by a mechanism known as horizontal gene transfer, in which DNA is transferred between species rather than vertical gene transfer, in which genes are passed from a parent to a kid.To know more about evaporation with the given link
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Related Questions
Having identical pairs of genes for any given pair of hereditary
characteristics is said to be
what? (i think it’s biology)
Answers
Hom ozygous
Hope this helps!
(and yes this is biology!)
Which argument is BEST supported by the information given?
A
The earthworm and lizard evolved at the same time because of the absence of legs and hair
B
The lizard and humans share a common ancestor because of the presence of a backbone and legs.
С
The trout and humans share a common ancestor because of the presence of a backbone.
D
Earthworms were the most recent to evolve because of the absence of the derived characteristics
Answers
The lizard and humans share a common ancestor because of the presence of a backbone and legs statement is true.
What is Evolution?Evolution refer to the change or variation in in the characteristics of organisms over several generations and this depends on the process of natural selection.
some Organisms evolved from the same ancestors and they share some similarities in characteristics like hair, legs.
Humans and lizards evolve from same ancestors of over 320 million years ago.
Therefore, The lizard and humans share a common ancestor because of the presence of a backbone and legs statement is true.
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some please help ASAP!!
i will give brainliest!!
Answers
K+ ions are continuously forced into neurons by A. their high
internal concentration. B. their high external concentration. C.
the negative resting potential. D. the action of the Na-K pump E.
both C
Answers
The correct option is D. the action of the Na-K pump. K+ ions are continuously forced into neurons by the action of the Na-K pump. This pump moves three sodium ions out of the cell and two potassium ions into the cell for each ATP molecule that is hydrolyzed.
The Na-K pump creates a concentration gradient for both sodium and potassium ions, which can drive their movement into or out of the cell via ion channels. The high internal concentration of K+ ions means that there are more K+ ions inside the cell than outside the cell. K+ ions are forced into the neurons because they are not in equilibrium.
The concentration gradient drives K+ ions into the cell because there are more K+ ions inside the cell than outside. The high external concentration of K+ ions could have the opposite effect and drive K+ ions out of the cell, but this is not the case because of the action of the Na-K pump. The negative resting potential of the cell is also not responsible for driving K+ ions into the cell because K+ ions are positively charged and would be repelled by a negative charge.
The action of the Na-K pump is responsible for continuously forcing K+ ions into the neurons. This pump moves three sodium ions out of the cell and two potassium ions into the cell for each ATP molecule that is hydrolyzed. This creates a concentration gradient for both sodium and potassium ions, which can drive their movement into or out of the cell via ion channels.
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Mrs. Franklin's science class is conducting an experiment with corn plants. The students planted 100 corn kernels. Green plants sprouted from 78 of the kernels. The other 22 kernels grew into white plants, which contained no chlorophyll. What inference can be made about the genotype of the corn? A White color is dominant over green. B Green color and white color are equally recessive. C White color and green color are equally dominant. D Green color is dominant over white.
Answers
Answer:
D- Green color is dominant over white
Explanation:
For a heterozygous cross, the dominant one will show around 75% of the time where the recessive will show around 25% and 78 and 22 and very close to those numbers!
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ou observe flocks of house sparrows (passer domesticus) and document two foraging strategies: 1) individuals (producers) search for food patches and 2) individuals (scroungers) wait for producers to find food and then feed in the patches found by the producers. the relative frequency of these strategies differs in flocks, and you observe that the scroungers have a high feeding rate (higher fitness) when they are rare in a flock and low feeding rates when they are common in a flock. this is an example of
Answers
You observe flocks of house sparrows (Passer domesticus) and document two foraging strategies:
individuals (producers) search for food patches and individuals (scroungers) wait for producers to find food and then feed in the patches found by the producers.The relative frequency of these strategies differs in flocks, and you observe that the scroungers have a high feeding rate (higher fitness) when they are rare in a flock and low feeding rates when they are common in a flock. This is an example of a social-foraging strategy.
Social foragers use either a 'producer' strategy, which concerns searching for food, or a 'scrounger' strategy, which concerns joining with others for food findings. While producers depend on personal knowledge and experience, the inclination to scour as a producer is connected to being a sounder learner.
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Which of the following factors is not an important advantage for aquatic organisms living near the surface of a lake or pond?
Group of answer choices
higher oxygen level
presence of decomposing organisms
more sunlight
warmer temperature
Answers
more sunlight I think cause most of them don't need sunlight
Blood pressure is a cognitive process because it is observable with lab equipment. T F.
Answers
Blood pressure is defined as the pressure of the blood at which it is flowing through the blood vessels. It is measured by different lab equipment.
The given statement is false.
Cognitive properties refer to sensation, attention, and perception. The ability to solve problems, perform mental operations, learn languages and reasoning are also some of the cognitive abilities.
Cognitive abilities are calculated or estimated by a series of tests and activities, it is not measurable with a piece of equipment.
Blood pressure is a normal physiological activity, which functions to deliver blood and oxygen to all parts of the body. Blood pressure can be measured by the lab types of equipment but is not a cognitive activity.
Thus, the given statement is False.
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Answer:
f
Explanation:
before the introduction of the yellow crazy ant to christmas island, land crabs ate many plant seedlings in the forest, maintaining a relatively clear forest floor. as the crab population has declined, plant seedlings have flourished. the forest floor is now covered with plants. which statement best describes what is occurring on the forest floor? responses secondary succession is occurring because the organisms on the forest floor are changing. secondary succession is occurring because the organisms on the forest floor are changing. primary succession is occurring because the ant is a new species changing the ecosystem. primary succession is occurring because the ant is a new species changing the ecosystem. climax vegetation is occurring because the seedlings finally have the chance to grow. climax vegetation is occurring because the seedlings finally have the chance to grow. primary succession is occurring because more plant life is healthier for the ecosystem.
Answers
The best description of what is happening on the forest floor when the yellow crazy ant to Christmas Island, land crabs ate many plant seedlings in the forest is secondary succession is occurring because the organisms on the forest floor are changing (Option A).
The decline in the crab population has led to an increase in plant seedlings, resulting in a change in the organisms present on the forest floor. Primary succession is not occurring because the yellow crazy ant is not a new species that is changing the ecosystem, but rather an introduced species that is causing harm to the existing ecosystem. The statement about climax vegetation is not accurate since the forest floor is still undergoing succession and has not yet reached a stable state. The last statement about more plant life being healthier for the ecosystem may be true, but it does not accurately describe the type of succession that is occurring.
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All cells are contained within a membrane called the:
A. Cell wall
B. Cytoplasm bilayer
C. Cytosol
D. Phospholipid bilayer
Answers
Answer:
Phospholipid bilayer
Explanation:
That is essentially the primary componenent of the cell membrane where phospholipids form two layers.
Through transpiration, water is released
back into the atmosphere through the
plant's?
Answers
Answer:
Yes!
Explanation:
The process in which, water is evaporated from plant parts ( leaves and sometimes stem ) into the atmosphere, is called transpiration.
hope it helps..
please mark brainliest
Answer: Yes
Explanation:
Which phase comes NEXT?
Prophase
anaphase
metaphase
telophase
Answers
The phase occuring in the picture is anaphase and the next phase after anaphase is telophase. So the next phase is telophase.
Prokaryotes like most living organisms need movement to locate food and to survive if a prokaryotes needed to move to a new food source which structures would it use for locomotion
Answers
Answer:
may be flagella, pili or amoeboid movement
Answer:
Flagellum
Explanation:
Hope this helps :)
What is The difference between the accepted value and experimental value
Answers
Answer:
aceptable value is directly accessed where as experimental value is not coinfermed.
selection that reduces the frequency of hybridization and/or the fitness of hybrids between populations following secondary contact is termed
Answers
Reinforcement is the selection that reduces the frequency of hybridization and/or the fitness of hybrids between population following secondary contact is termed.
Traditionally, rewards fit with self-regulation. Consequences have the power to affect behavior, but behaviour also need antecedents. There are four types of reinforcement: extinction, punishment, and positive and negative reinforcement. Application of a positive reinforcer is referred to as positive reinforcement.
The act of removing anything undesirable from the space of the subject in order to support the antecedent behaviour from that subject is known as negative reinforcement.
Extinction involves a behaviour with no necessary dependent outcome. Theoretically, whatever that is not reinforced should vanish, good or evil. The imposition of an adverse consequence for undesirable behaviour is what punishment ultimately is. Removing a reward after performing poorly is an example of punishment by removal.
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activity 1sample observations color of the solution with the biuret reagent does the color of the solution indicate the presence of proteins (yes or no)? water (control) filtrate casein
Answers
Proteins are present because of the colour of the biuret reagent solution in the listed observations.
The biuret reagent is a chemical mixture that is frequently used to check a sample for the presence of proteins. Proteins and the biuret reagent interact to change the colour of the solution, usually from blue to purple or violet. As a result, the presence of proteins is indicated if the colour of the solution after adding the biuret reagent turns purple or violet.
Three substances were evaluated in the observations given: casein, filtrate, and water (the control). Since proteins are not anticipated to be present in the control sample (water), the biuret reagent shouldn't result in a colour change.
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Cladograms are scientific hypotheses that can be overturned by new data. True False Angiosperm plants did not appear until after the extinction of the dinosaurs. True False The definition of an analogous character is "a character that has a similar function to a character in a different organism, but these similarities are due to different evolutionary origins". True False In evolution, non-genetic changes that occur during an organism's life span, such as increases in muscle mass due to exercise and diet, cannot be passed on to the next generation. True False The definition of a monophyletic group is "a group of organisms that has a single ancestor and contains only some of the descendants of this unique ancestor". True False An ichnofossil is any part of the hard skeleton left behind by a vertebrate in the fossil record. True False
Answers
An ichnofossil is any part of the hard skeleton left behind by a vertebrate in the fossil record. This statement is false. An ichnofossil is a trace fossil, which is any indirect evidence of past life, such as tracks, burrows, and feces. It is not part of the hard skeleton left behind by a vertebrate.
Cladograms are scientific hypotheses that can be overturned by new data. This statement is true. Cladograms are diagrams that show the evolutionary relationship between organisms based on various traits. New data can cause changes to be made to cladograms which can result in a change to the interpretation of the evolutionary history of organisms.
Angiosperm plants did not appear until after the extinction of the dinosaurs. This statement is false. Angiosperms, also known as flowering plants, appeared in the fossil record at least 140 million years ago. Although the dinosaurs went extinct around 66 million years ago, angiosperms were already widespread and diversifying by that time.
The definition of an analogous character is "a character that has a similar function to a character in a different organism, but these similarities are due to different evolutionary origins". This statement is true. Analogous characters are traits that have evolved independently in different groups of organisms due to similar environmental pressures and not due to a shared ancestor.
In evolution, non-genetic changes that occur during an organism's life span, such as increases in muscle mass due to exercise and diet, cannot be passed on to the next generation. This statement is true. Non-genetic changes that occur during an organism's life span are not heritable and cannot be passed on to the next generation. Only genetic changes that occur in the germ cells, such as mutations, can be passed on to the offspring.
The definition of a monophyletic group is "a group of organisms that has a single ancestor and contains only some of the descendants of this unique ancestor". This statement is false. A monophyletic group is a group of organisms that has a single ancestor and contains all of the descendants of this unique ancestor. This group is also called a clade.
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which test evaluates extraocular muscle function when a small light source is projected onto the cornea of the eye with the child looking straight ahead?
Answers
The test that evaluates extraocular muscle function when a small light source is projected onto the cornea of the eye with the child looking straight ahead is known as the corneal light reflex or Hirschberg test. It is a screening test for strabismus and the assessment of ocular alignment.
The test is performed by observing the reflection of a small light source on the cornea. The position of the corneal light reflex provides an indication of the alignment of the eyes.The light source should be positioned in such a way that it is projected onto the central part of the cornea.
When the light is projected onto the eye, the reflection is observed. The position of the reflection on each cornea is noted. The positions of the reflections should be symmetrical. If they are not, it is indicative of an ocular misalignment.
. In conclusion, the corneal light reflex or Hirschberg test evaluates extraocular muscle function when a small light source is projected onto the cornea of the eye with the child looking straight ahead.
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Enamel is the hardest substance in the human body. Justify your answer.
Answers
Enamel is indeed the hardest substance in the human body. It is present in teeth of humans. It covers every tooth and provides the hard layer.
Tooth Enamel is hard glossy substance that is comprised of calcium and phosphate mineral crystals which in return makes our teeth more stronger. Teeth enamel care is extremely important to maintain the oral health of teeth.
Tooth Enamel is one of the major tissue that make up tooth in humans. It covers the top layer of the teeth known as Crown. Calcium hardens the tooth enamel. Enamel contains 96% of the minerals. The color of Enamel varies from light yellow to white.
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If the density of ethanol is 0.789 g/mL, how many milliliters are produced in this reaction?
C6H12O6 --> 2 C2H5OH + 2 CO2
Answers
The volume of the ethanol is 6.7 mL
What is the density of the ethanol?We know that density is defined as the ratio of the mass to the volume of an object. We know that the density is said to be an intrinsic property and this means that we can use the density of the object to be able to obtain the kind of object that we are dealing with.
We have the information that the mass of the carbon dioxide that can be obtained from the reaction is about 10 g. We can now use this to obtain the number of moles by the use of the formula;
Number of moles = mass/ molar mass
= 10 g/44 g/mol
= 0.23 moles
From the reaction equation:
1 mole of ethanol produces 2 moles of carbon dioxide
x moles of ethanol produces 0.23 moles of carbon dioxide
x = 0.23 × 1 /2
= 0.115 moles
Mass of ethanol = 0.115 moles × 46 g/mol
= 5.29 g
Volume of the ethanol = mass/density
volume = 5.29 g/0.789 g/mL
= 6.7 mL
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The Earth's climate can be influenced by a number of naturally-occurring factors. These include...
A.
Volcanic activity.
B.
Changes in the sun's energy output.
C.
Fluctuations in the Earth's tilt or orbit.
D.
All of the above.
Answers
Answer:
its D
Explanation:
Oseltamivir was commercially produced from shikimic acid, a precursor which is a
metabolite in micro-organisms and plants.
Outline how green chemistry was used to develop the precursor for oseltamivir in order
to overcome a shortage of the drug during the flu season.
Answers
Green chemistry principles were utilized to develop the precursor for oseltamivir to overcome the shortage of the drug during the flu season.
One such principle was to utilize renewable resources to produce the precursor. In this case, shikimic acid was sourced from the pods of Chinese star anise, which is a plant-based source. Additionally, the manufacturing process used for the production of shikimic acid was designed to minimize waste and reduce the use of toxic chemicals. This process involved fermentation of the plant material to produce the desired precursor, which resulted in a higher yield of shikimic acid with less energy consumption compared to traditional chemical methods.
Furthermore, the process was optimized to utilize natural enzymes instead of synthetic catalysts, reducing the need for harsh chemicals. These green chemistry approaches were successful in producing enough shikimic acid to meet the high demand for oseltamivir during the flu season.
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Beta-lactamases Question 1 options: bind to peptides. bind to penicillin-binding proteins. break the beta-lactam ring. prevent the linking of glycan chains in peptidoglycan. bind to carbohydrate
Answers
Beta-lactamases is important for the development of new antibiotics that can overcome this resistance.
Beta-lactamases break the beta-lactam ring, which is an essential structural component of many antibiotics including penicillins and cephalosporins. This ring is responsible for the antibacterial activity of these drugs by targeting the enzymes that form the peptidoglycan layer of bacterial cell walls. Peptidoglycan is a complex molecule composed of alternating sugar and amino acid subunits, and beta-lactam antibiotics work by interfering with the formation of these subunits.
Beta-lactamases are enzymes produced by bacteria that can hydrolyze the beta-lactam ring and inactivate these antibiotics. This allows bacteria to survive in the presence of these drugs and contributes to the development of antibiotic resistance.
Therefore, understanding the mechanisms of beta-lactamases is important for the development of new antibiotics that can overcome this resistance.
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the complete question is
Beta-lactamases
a. bind to penicillin-binding proteins.
b. bind to peptides.
c. prevent the linking of glycan
d. chains in peptidoglycan.
e. break the beta-lactam ring.
While hiking in the Andes Mountain in South America, Darwin found a glyptodon fossil that resembled the modern armadillo. This evidence was used by Darwin to support his theory of natural selection by showing how species have
A.gone extinct.
B.slowly changed over time.
C.blended genetic material.
D.never changed.
Answers
Answer:
D
Explanation:
molecular orbital (mo) theory treats a molecules as a collection of nuclei with mos delocalized over the entire structure. group of answer choices true false
Answers
The statement "molecular orbital (MO) theory treats a molecule as a collection of nuclei with MOs delocalized over the entire structure" is true. It is a fundamental concept in molecular orbital theory, which is one of the two primary ways to describe the electronic structure of a molecule.
In this theory, each molecule is viewed as a whole with its constituent atoms' atomic orbitals combined to generate new molecular orbitals.The electrons are assigned to these new MOs according to the Pauli exclusion principle and Hund's rule, which govern the electronic configuration of the molecule.
The molecular orbital theory explains the bonding, antibonding, and nonbonding interactions between electrons, which underlies the physical and chemical properties of the molecule.MO theory also makes it possible to describe the molecule's spectroscopic properties, such as UV-visible and infrared spectra. For example, electronic transitions that lead to absorption in the UV-visible region of the electromagnetic spectrum can be attributed to electron excitation from the bonding to antibonding molecular orbitals.In conclusion, molecular orbital theory treats a molecule as a collection of nuclei with MOs delocalized over the entire structure.
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which of the following kinds of cells perform basic functiona as obtaining energy from food
Answers
Answer:
Both plant cells and animal cells.
Explanation:
This is due to the requirement for survival in both plant and animal cells, which provides movement and work energy to food.
Other possibilities are not correct, as either cell or none of them acquire food energy is false.
Which of food groups contains BOTH plants and animal origins?
a. fruits
b. Vegetables
c. Protein
d. Grains
Answers
Answer:
c. protein
Explanation:
animals- fish, meat
plants - soy
Answer:
c. Protein
Explanation:
Protein contains both animal as well as plant origins.
Directions: From the words listed below, choose the letter by the word that best completes the sentence.
a. patronize b. contaminated c. digressions d. adjacent e. egocentric
16. The boys learned that the old carriage house where they used to meet weekly was _____ to a chemical
dump.
17. Although the heiress was kind to her servants, she tended to _____ them.
18. Your lies have ____ our friendship.
19. Mrs. Flynn’s lectures often contained interesting ____ about her won experiences.
20. Lonnie often bored us with his ____ stories about his bodybuilding competitions.
Answers
Answer:
16: Contaminated
17: patronize
18: Egocentric
19: Digression
20: adjacent
An image of a woolly mammoth and a mastodon is shown here. Analyze the similarities and differences between these species and present-day elephants. Evaluate the statements below and select the one(s) that accurately describe the evolution of these species. Select ALL that apply.
Answers
The evolution of the woolly mammoth and mastodon species are based on the fact that:
B, These populations evolved over time based on their different environmental pressures.C, Genetic variation exists on an individual level as we see different phenotypes in a population. However, the individual itself cannot evolve. E, These population-level changes can lead to speciation if populations diverge over time.Which characteristics differentiate woolly mammoth and mastodon?Mastodons had flatter heads, but mammoths had a noticeable knob on top of their skulls caused by a bulbous bone protrusion. Both possessed large top tusks, but mammoth tusks developed in a curved pattern, occasionally crossing in front of one another.
Mastodons were shorter and stockier than mammoths, and their tusks were shorter and straighter. Mastodons were wood browsers, and their molars had pointed cones that were designed specifically for chewing woody browse.
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Answer:
Certain members of the mastodon and mammoth populations were better suited for survival than others.
These populations evolved over time based on their different environmental pressures.
Selective pressures caused differential survival and reproduction of individuals in the mammoth and mastodon populations.
Explanation:
Which of the following best explains how DMCU affected the reaction?
Answers
DMCU affected the reaction photosynthesis which is electron transport during the light.
The electron transport during the light response of photosynthesis is impeded by DCMU.
Plants as well as other living things are using a process called photosynthesis to transform light energy in and out of chemical energy that could quite later be published through cellular respiration to power the organism's activities.
a chemical reaction that takes place when sunlight is present in plants, algae, as well as some forms of microorganisms. Water as well as carbon dioxide combine all through photosynthesis to create carbohydrates (sugars) but also release oxygen.
Therefore, the correct answer is option (a)
The given question question is incomplete, the complete question is:
Which of the following best explains how DMCU affected the reaction?
a) Photosynthesis
b) Addition
c) Photochemical
D) None
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