Plants that grow in deserts of different continents have some traits in common, such as those mentioned in the second, and the third answer options: B. they share special adaptations that are analogous, and C. they show more similarities to other plants on the same continent that they do to each other. This is because different and non-closely related species can develop similar traits to exploit a particular resource, in this case, it would be the space and nutrients availability present in this kind of ecosystem (deserts), and, since they evolve in the same continent, and in hence, evolved from ancient plants living there, they would be more related to them, than to the other plants from other places.
Compare and contrast the structure RNA and DNACould you please separate the answers and simplify the terminology, please and thank you. :)
We have that DNA is a double-stranded molecule made up of deoxyribonucleic acid, while RNA is a single-stranded molecule made up of ribonucleic acid. What does this mean? That refers to one of their main compounds, the pentose sugar, which has one Oxygen atom not linked (deoxyribose; DNA), or linked (ribose; RNA) to the second Carbon atom, forming an -OH group in that position.
Another difference we could mention can be that regarding the nitrogenous bases ( Adenine (A), Guanine (G), Cytosine (C), Thymine (T), and Uracil (U) ), specially Thymine and Uracil, which are proper to DNA, and RNA, respectively.
In the same way, one more difference between these two molecules is that they´re used for different purposes. DNA is involved in the storage of genetic information, while RNA is involved in protein synthesis.
All members of class Aves use what means of bringing forth young?Pouch CareOviparousViviparousOvoviviparous
All members of class Aves are oviparous.
Oviparous animals lay eggs. Fertilization takes place internally and the embryo development takes place externally. Oviparous animals always hatch the eggs after being expelled from the body.
Some other examples of oviparous animals are fish and reptiles.
Scientists are monitoring the migration of flounder in the Atlantic Ocean along the coast from Virginia in the winter to as far north as Maine in the summer. The data table below shows average water temperature for summers off the coast of Virginia at the end of each decade from 1970 to 2020.If flounder are best adapted to water temperatures near 17°C in the summer months, predict what will happen to the summer population of flounder around Virginia in the coming decades. Explain your reasoning based on what you know about genetic adaptations.
Temperature regulates the distribution of species in a determined ecosystem.
Looking at the table you can see that the temperature of the water along the coast of Virginia has been increasing through the decades.
An increase in temperature may lead the species to migrate, where the temperatures are better for their survival.
It may also affect the local populations by increasing the rate of mortality of those individuals within the population that cannot adapt to the said change. Even if the poorly adapted individuals manage to survive, their reproduction chances will decrease as the adverse conditions might decrease the individual's fertility or make them seem like unsuitable mates.
On the other hand, those individuals of the population that are able to adapt to the changes are more likely to survive and parent the next generations, passing on the genes that allowed them to adapt to the environmental changes. Over the course of several generations, you'd expect the population to slowly change and the population of flounders living on the coast of Virginia will be eventually adapted to survive on higher than 17ºC temperatures.
Is my answer correct for roman 1 and roman ii
According to the problem we need density and frequency.
Density is defined as the number of individuals per area unit. Meanwhile, frequency is the probability of finding a species in a certain area.
The formulae are as it follows
Density (D)= Total of individuals/ sampled area
Frequency (Fr)= (Number of quadrants where species is present/ total number of quadrants)X100
Applied for (i)
Plants= 2+6+7+12+3+5+5=40
Sampled Area: (10x4m²)= 40m²
D=40/40m²=1 individuals/m²
Applied for (ii)
present in 7 quadrants
total of quadrants 10
Fr=(7/10)x100
=70%
Choose ONE from the list And explain to me how it leads to deforestation
Hurricanes can lead to deforestation by the force of the winds being able to destroy the flora, eventually because of that, and the fauna in points of contact with the hurricane. Trees can be blown away, as weel as, some animals, being taken to great distances and destabilizing the florest habitat.
Draw the structure of a steroid
Steroids are organic compounds associated with hormones.
An example is a cortisol.
The attached photo shows the difference between cholesterol and steroid, cortisol.
I just really don’t understand this if you can please help it will be greatly appreciated
1 B
2 B, D
3 A
4 A
5 G
6 G
7 D, H
8 B
Hello I don’t understand this question. Please help me step by step to help me get the answer! This is a practice problem thank u,
Answer:
we can see that we have 2 short whiskers and 2 long whiskers , so the phenotypic ratio is 2:2 which is the same as 1:1
Explanation
the question asks for the phenotype ratio of cross between two cats.
here we are told that the allele for short whiskers is Dominant (S) and the allele for long whiskers is recessive (s). this statement means that when we cross two cats with a dominant allele S, the cat will have short whiskers and when we have the recessive alleles only, the cat will have long whiskers.
in the Punnett square below a cat with Ss and ss alleles are crossed.
when we do a cross each individual allele from one cat is cross with the two alleles of the other cat to give a total of for crosses. we can see that the offsprings will have the following genotypes
Ss
ss
Ss
ss
since we now have the genotypes of the cats, we can use the information from above about dominant and recessive alleles to determine the phenotypic ratio
Ss - short whiskers
ss - long whiskers
Ss - short whiskers
ss - long whiskers
we can see that we have 2 short whiskers and 2 long whiskers , so the phenotypic ratio is 2:2 which is the same as 1:1
New medications undergo extensive human testing before receiving FDA approval. These tests represent an experiment andvariations in the dosage given to participants represents the0 a.standardized variableO b.independent variableO C.control groupO ddependent variable
The variation in the dosage given to the participants on an experiment represents the independent variable because it is composed of different values that are changed and determined by the scientist in charge of the experiment, based on previous information and research (It does not depend on any other variable or factor).
Bat wings and birdwings are examples of this type of structure in animals.Question options:PhylogenyHomologousVestigialAnalogous
Answer: Analogous Stuctures
An analogous stucture refers to any sort of skeletal/bone structure in a set of organisms that perform similar tasks. In this case, bird and bat wings both have structures meant to aid in flight.
this segment best represent ls the products of the reaction…abcdor e
This picture is all about enzyme catabolism.
The answer is B.
When did dinosaurs become extinct?A. 6.6 million years agoB. 6 billion years agoC. 600 million years agoD. 66 million years ago
Bountiful fossil bones, teeth, trackways, and other strong information have exposed that Earth was the territory of the dinosaurs for at least 230 million years. However, not a lone fragment of dinosaurs debris has been found in rocks younger than about 66 million years.
Answer - d. 66 million years ago
Why are most systems in the human body negative feedback systems?A. Negative feedback systems allow humans to regulate and stabilize their systems.B. Positive feedback restricts body temperature and keeps it controlled.C. Positive feedback systems don't work well with electrically charged neurons.D. Negative feedback systems balance the overall positively charged human organs.
Negative feedback systems are responses in your body that happen in order to maintain homeostasis and balance within a system. One example of negative feedback system is thermoregulation. If we did`nt have that, the temperature of our organisms would change drastically and it could cause bad consequences for our health and body functioning. The correct answer is letter A: Negative feedback systems allow humans to regulate ans stabilize their systems.
What are cotyledons?
Cotyledon is the leaf that first sprout from a seed. it is considered as the
11. A student observed a cell under a microscope. She wanted to determine what type of cell she was observing. She drew a diagram of the cell and labeled the parts.Below is her drawing.CellMitochondriaCell wellmembraneNucleusVacuoleCytoplomWhat type of cell was she most likely observing and what evidence supports this claim?O A plant cell because it has a cell wall.O A fungal cell because it has no chloroplasts.O A plant cell because it has a vacuole,O A fungal cell because it has a vacuole.
The type of cell she was most likely observing is a fungal cell and the evidence that supports this claim is that it has no chloroplasts. (second option)
4. Which of the following defines a biological community?A. a group of interacting populations that occupy the same geographic area atthe same timeB. anything that is part of an organism’s environment that causes a reaction inthe organismC. an area where an organism lives
A biological community is made by a group of organims interacting in the same habitat, being the better definition for a biological community the one in the alternative A. a group of interacting populations that occupy the same geographic area at the same time.
3. See the picture below, which numbers show the followings: optic never,optic chiasm, and olfactory bulbVIIIVIIXIIIIIIItrVIрIVIX X X1
II optic nerve
I Olfatory nerve
there are 12 craneal nerves and the optic nerves is the second (2)
the optic chiasm is part of the Optic nerve is where the nerves cross
and the olfatory bulb is part of the olfatory nerve
What is inside a bacteriophage?O proteinO DNAO carbohydrateO lipid
All viruses, like bacteriophage are organisms with a core of genetic material surrounded by a protein capsid. Therefore, inside a bacteriophage can be found DNA (or RNA).
Gwen get kamias form their backyard. she sliced the kamias and arranged them in a tray. she put the tray under the sun afterwards.
Different tools used in food preservation are :
measuring spoons
measuring cups
kitchen towels and paper towels
cutting board
scissors
vegetable peeler
rubber spatula
How does the usable form of nitrogen enter out bodies ?
Answer: Through Food Consumption
Explanation:
Human can't utilize nitrogen through respiration, but can absorb through the consumption of plants or animals that have consumed nitrogen rich vegetation. The bulk of the nitrogen we consume comes from amino acids.
Define biogeographical evidence
Biogeography means the study of the distribution of organisms in an area. Common terms associated with biogeography are cosmopolitan (an organism found almost everywhere), disjunct (an organism with two populations found in different parts of a region), native (an organism present in a wide area), and endemic (an organism found only in a particular area). Biogeographical evidence is a type of proof of an organism's past or present occupation of a particular area. This can be in the form of fossils, manure/fecal matter, bones, etc.
If this strand of DNA was used, what would be the complimentary DNA produced? TAC GGA) ACG CCB) CGT AAC) TAC CGD) ATG CC
If the strand of DNA (TAC GG) is paired with it complementary strand of DNA, the nucleotides of this complementary will be ATG CC (D).
G links with C and A with T.
1. Describe how cellular respiration and photosynthesis are like “two sides of the same coin”?
These two processes are described as antagonists or the two sides of the same coin because they start with the molecules the other ends. In other words, to perform photosynthesis, plants need to capture CO2 plus water to, with the sunlight action, produce glucose plus O2, whilst to perform cellular respiration, they need to use O2 plus glucose, and produce CO2, plus water and ATP.
Bats eat insects that damage crops and are vectors for disease. While bats hibernate during the winter months, the fungus that causes white-nose syndrome (WNS) covers the bat's face and wings. WNS has a 100% mortality rate. What is the relationship between bats and the fungus that causes WNS?PredationCommensalismParasitismMutualism
Parasitic fungi live or colonize animals, plants, or other organisms on which they cause disease and even death or simply live at their expense.
Pseudogymnoascus destructans is a fungus known to cause white-nose syndrome (WNS), an infectious disease of bats. It is transmitted by direct contact between bats or with a contaminated environment. In fact, Pseudogymnoascus destructans invade and ingests the skin of hibernating bats, including their wings. This type of fungus is an ectoparasite. Ectoparasites are pathogens that generally infect only the superficial layers of the skin.
we can conclude that the correct answer is:
Answer:ParasitismA plant is heterozygous for height (Tt) and red flowers (Rr).What possible gametes will this plant reproduce ?
Remember that when heterozygous traits are crossed, the gametes would be one homozygous dominant gamete, two heterozygous gametes, and one homozygous recessive. Thus, we obtain the following results:
TR, Tr, tR, and tr.
Notice that in this case, TR is the homozygous dominant gamete, Tr, tR are the heterogygous gametes and tr is the homozygous recessive gamete.
we can conclude that the correct answer is:
Answer:TR, Tr, tR, and tr.
The cryosphere is all of Earth's ice. Water can move from Earth's atmosphere to itscryosphere throughClouds form when water vapor forms liquid droplets throughBoth crystallization and condensation happen when energy is-water vapor.Rain isprecipitation.
Condensation refers to water passing from the gas phase to the liquid phase, it happens when temperature drops or when the air is saturated with water.
Crystallization is when the water passes from gas to solid in the form of crystals, for example, when is snowing.
With this information, we can complete the phrases as follows:
The cryosphere is all of Earth's ice. Water can move from Earth's atmosphere to its cryosphere through crystallization.
Clouds form when water vapor forms liquid droplets through condensation.
Both crystallization and condensation happen when energy is low.
How is phospholipid arranged in the cell membrane?
The physical organization and functioning of all biological membranes depend on their constituents: lipids, proteins, and carbohydrates.
Now, the lipids establish the physical integrity of the membrane. In particular, the phospholipid bilayer serves as a lipid lake in which a variety of proteins float.
To know how is phospholipid arranged in the cell membrane, remember that phospholipids have hydrophilic regions and hydrophobic regions:
1. Hydrophilic regions: The phosphorus-containing head of the phospholipid is electrically charged. This head is associated with polar water molecules.
2. Hydrophobic regions: The long, nonpolar fatty acid tails of the phospholipid associate with other nonpolar materials. These tails do not dissolve in water. That is, these tails are not associated with hydrophilic substances.
Then, in the mosaic fluid model of the cell membrane, the phospholipids can coexist with water by forming a bilayer where the fatty acids of the two layers interact with each other and the polar regions are facing the outside aqueous environment.
We can conclude that the correct answer is:
Answer:The phospholipids are arranged in the cell membrane in the following form:
the fatty acids of the two layers interact with each other and the polar regions are facing the outside aqueous environment.
Base your answer to the question on the information below and on your knowledge of biology.A scientist added an antibiotic to a Petri dish containing bacterial colonies. A day later, the scientist noticedthat many colonies had died, but a few remained. The scientist continued to observe the dish and noted that,eventually, the remaining colonies of bacteria increased in size.The survival of some bacterial colonies was most likely due toA. the bacterial cells changing so that they could live C. meiotic cell division in the bacteriaB. a resistance to the antibioticD. a DNA change caused by the antibiotic
Addition of antibiotic in a media will disrupt the bacterial cell. The end result of this process is either killing the bacteria or slowing down its growth. However, antibiotic resistance can develop along the way. Survival of some bacterial colonies can be possible. Antibiotic can lead to DNA damage. This will lead to accelerated resistance to the antibiotic treatment.
I got the answer of H, B, A, G, and wanted to know if it was right?
The order goes as follows: h,b,a,g. The order you put is right, since it encompasses the greatest distance: H-G, and within the other alleles. H-B, and A-G. Thus, it appears B-A as the middle space.
Which of the following is a true statement about the non-specific immune system?•it includes lymphocytes and plasma cells. •it responds faster with each encounter of a pathogen•it is something that is acquired over time• none of these
Non-specific immune system is considered as our first line of defense in response to a certain infection. It is referred to as innate or inborn immune response, It includes the skin, mucous membranes, antimicrobial chemicals, natural killer cells, phagocytosis, inflammation, and fever. These are our body's reactions when we are exposed to germs and foreign subtances. These defenses acts very quickly upon an encounter or exposure to a certain pathogen. It means that the pathogen that entered the different body openings is being detected at once and destroyed on the spot.
Immunity that includes lymphocytes and plasma cells is not part of the innate immunity. It is not acquired over time because it is already present since we were born.
Answer - •it responds faster with each encounter of a pathogen