Which of the following is a trait not shared by birds and placental mammals? amniotic egg O endothermy secretory glands O homeothermy
Answers
The trait not shared by birds and placental mammals is the **amniotic egg**.
While both birds and placental mammals exhibit endothermy, secretory glands, and homeothermy, they differ in their reproductive methods. Birds lay amniotic eggs with hard shells, providing protection and nourishment for the developing embryo. In contrast, placental mammals develop their embryos internally, with nourishment provided through the **placenta**. This fundamental difference in reproduction separates birds from placental mammals, as the latter do not produce amniotic eggs.
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Related Questions
8. Analyze Pouring milk
over cereal creates a solu-
tion. (Circle your choice.
Then, on the lines pro-
vided, explain your
answer.)
a. True
b. False
Answers
Answer:
When you pour milk on your cereal, the resulting mixture is not a solution
Explanation:
because the cereal DOES NOT become DISSOLVED in the milk
Cereal is a good illustration of a heterogeneous mixture because it contains a variety of unbalanced ingredients, including flakes, berries, and clusters. A mixture that has components that are evenly distributed, like seawater, is said to be homogenous. Thus, it is false.
What Analyse Pouring milk over cereal creates a solution?Cereal that has been poured first will be perfectly moistened with the right amount of milk. Starting with a solid and then adding a liquid only makes sense, like adding dressing to a salad. The solid can only be properly coated in this way.
Combining the milk and cereal when making cereal for breakfast involves a physical shift. During digestion after eating the cereal, a chemical change takes place.
Therefore, it is false that pouring the milk first makes your cereal crispy for a longer period of time. Eating the Frosted Flakes at the bottom of your dish that are wet is the worst. The desired crunch is preserved with milk before cereal.
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Identify the genotype for each numbered item. 1. 2. 3.
Answers
Genotype is the combination of alleles that make up an organism’s genetic code. Alleles are variations in a gene that can produce different traits within an organism. In the case of item 1, the genotype is TT. This means that the organism has two copies of the same allele, one from each parent, for a particular trait.
The genotype for item 2 is Tt, which means the organism has one copy of the allele from each parent, in this case one for brown eye color and another for blue eye color. This particular genotype is known as a heterozygous genotype, meaning the organism carries two different alleles for a particular trait.
Finally, item 3 has a genotype of tt, which means the organism has two copies of the same allele, but this time it is for blue eye color. This particular genotype is known as a homozygous genotype, meaning the organism carries two of the same allele for a particular trait.
In conclusion, the genotypes for each numbered item are TT, Tt and tt respectively. These genotypes represent the combination of alleles an organism carries for a particular trait. A genotype of TT means the organism has two copies of the same allele, Tt means the organism has one copy of the allele from each parent and tt means the organism has two copies of the same allele.
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1. TT
2. Tt
3. tt
Fill in the blanks below with the correct word to complete the sentence.
Water is warmed by the sun and
evaporated
.
It is then cooled and
.
Finally, it is brought back to Earth in the form of
Answers
Answer:
# changes into water vapour
#condenses
#rain
Explanation:
As water vapor rises higher in the atmosphere, it begins to cool back down. When it is cool enough, the water vapor condenses and returns to liquid water. These water droplets eventually gather to form clouds and precipitation.
Which of the following is NOT a function of the small intestine?
A. mastication of food
B. absorption of nutrients
C. complete digestion of food
D. mixing by segmental contractions
Answers
The front teeth, or incisors, have a powerful cutting action, while the back teeth, or molars, Mastication have a grinding activity. Together, the muscles of the jaw may shut the teeth with a force of up to 200 pounds on the molars and 55 pounds on the incisors.
The first stage of digestion, known as mastication, is when food is physically and chemically broken down into smaller pieces. Mastication, or chewing, is accomplished by the teeth coordinated motions of the upper teeth and lower jaws.
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Which of the following takes a longer period of time? primary succession secondary succession third succession O dynamic equilibrium development of soil from rock
Answers
Primary succession takes the longest period of time compared to the other options listed. Primary succession refers to the process of ecological succession that occurs on barren land that has never had any vegetation before, such as newly formed volcanic islands, sand dunes, or glacier retreats.
The process begins with the colonization of the area by pioneer species, which are typically lichens and mosses. These species slowly break down the rock surface and create organic matter that allows for the growth of more complex plant species over time.
Secondary succession, on the other hand, occurs on land that has previously had vegetation but has been disturbed by events such as fires, floods, or human activity. This process takes less time than primary succession as the soil already contains organic matter and nutrient-rich material that supports plant growth.
Third succession is not a commonly used term in ecology and may refer to a hypothetical process that has not been scientifically studied.Dynamic equilibrium refers to a state of balance between opposing forces in an ecosystem, where the number of individuals and resources remain relatively stable over time.
The development of soil from rock is a process known as weathering and can take thousands of years, depending on the type of rock and the environmental conditions present. This process is a precursor to both primary and secondary succession, as it creates the necessary soil conditions for plant growth.
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e the following problem and select your answer from the choices given.
Question
Under ideal conditions, the population of a certain species doubles every nine years. If the population
starts with 100 individuals, which of the following expressions would give the population of the species t
years after the start, assuming that the population is living under ideal conditions?
2×100⁹r
2× 100 %.
100 x 2⁹
100 × 2
Answers
The expression that would give the population of the species t years after the start, assuming that the population is living under ideal conditions will be C. 100 × 2^9.
How to illustrate the population?A population is described as a group of people who belong to the same species and cohabit a particular area. In order to survive over time, members of a population frequently rely on the same resources, are subject to the same environmental restrictions, and depend on the availability of other members.
From the information, the the population of a certain species doubles every nine years. If the population starts with 100 individuals.
Therefore, this can be illustrated as:
100 × 2^t
Since the number of years is given as 9. This will be:
100 × 2^t
= 100 × 2^9
Therefore, the correct option is C.
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Which of the following is true regarding sex chromosome aneuploidy in humans?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Sex chromosome aneuploidies are always fatal.
(Choice B)
B
X chromosome aneuploidies are usually more harmful than autosomal aneuploidies.
(Choice C)
C
Male sex chromosome aneuploidy can affect either the X or Y chromosome.
(Choice D)
D
An XXY individual is considered a biological female because of the two X chromosomes.
Answers
Sex chromosome aneuploidies are always fatal. So, the correct option is (A).
What are Sex chromosome aneuploidies?Sex chromosome aneuploidies are defined as a relatively common group of chromosome disorders characterized by loss or gain of one or more sex chromosomes. Some sex aneuploidies are: Turner syndrome (XO), Klinefelter syndrome (XXY), trisomy X (XXX), XYY, and XXYY.
In all sex chromosome aneuploidies in which there is an excess of chromosomal material, the reverse pattern is found, with a relatively greater impairment of verbal than nonverbal abilities. These are always fatal.
Thus, Sex chromosome aneuploidies are always fatal. So, the correct option is (A).
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Answer:
dont listen to other guy the correct answer is
Male sex chromosome aneuploidy can affect either the X or Y chromosome.
Explanation:
I actually need so much help with this, I’ll give extra points just PLEASE HELP
Answers
The fact that a chimpanzees and humans have the same density of hair per square inch on their bodies indicates that humans and chimpanzees.
Answers
Viruses that are sitting in a droplet of water on a desk are...
1 dividing very rapidlly and becoming more dangerous
2 able to live for 3 days and then die
3in a dormant replication stage
4 inactive, they need a cell to reproduce
Answers
The virus that is sitting in a droplet of water on a desk is inactive, and they need a living cell to reproduce themselves because they do not have the machinery to reproduce. Thus, the correct option is D.
What are Viruses?
Viruses can be defined as the acellular organisms. These are very small organisms which does not have any organelles. The viruses contain only the genetic material in the form of DNA or RNA and a protein coat which surrounds the genetic material.
Viruses are found to be pathogenic in nature. These can infect many organisms such as plants, bacteria, and animals. Viruses cannot divide outside a living body as they do not have the machinery to reproduce and thus requires a cell to divide. These are inactive outside the living body.
Therefore, the correct option is D.
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Select all inheritance patterns in which 50% of the functional protein is sufficient to produce a wild-type phenotype: 1) Simple Mendelian dominant alleles 2) An X-linked dominant allele in a heterozygous female 3) Haploinsufficient genes 4) Incomplete dominance
Answers
The inheritance patterns in which 50% of the functional protein is sufficient to produce a wild-type phenotype are: Haploinsufficient genes and X-linked dominant allele .
Haploinsufficient genes: In haploinsufficient genes, a single copy of a functional allele is sufficient to produce a wild-type phenotype. This is because the presence of a single functional allele produces enough functional protein to perform its normal cellular functions.
X-linked dominant allele in a heterozygous female: In this inheritance pattern, a dominant allele located on the X chromosome results in a wild-type phenotype when present in a heterozygous female. This is because females have two X chromosomes, so the presence of a single functional allele on one X chromosome is sufficient to produce enough functional protein to produce a wild-type phenotype.
These inheritance patterns contrast with Simple Mendelian dominant alleles and incomplete dominance, in which both copies of the allele must be functional to produce a wild-type phenotype. In simple Mendelian dominant alleles, an individual with a single dominant allele will express the dominant phenotype. In incomplete dominance, neither allele is completely dominant, and a blend of the two alleles' phenotypes is expressed.
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what is the definition of fat?
Answers
Answer: a natural oily or greasy substance occurring in animal bodies, especially when deposited as a layer under the skin or around certain organs.
Explanation:
A. What percentage of earth's water can be found in soil?
B. What percentage of earth's water is stored in ice and snow?
C. What percentage of earth's fresh water is stored in ice and snow?
Answers
Answer:
a: 30 percent
b: 1.7 percent
c:68.7 percent
the opponent process theory of color states that cells that are exposed to: the opponent process theory of color states that cells that are exposed to: red light are inhibited by exposure to blue light. yellow light are inhibited by exposure to green light. green light are inhibited by exposure to blue light. yellow light are inhibited by exposure to red light. green light are inhibited by exposure to red light.
Answers
Green light are inhibited by exposure to red light. The opponent process theory explains how the cones attach to the ganglion cells and how different light wavelengths stimulate or inhibit opposing cells.
What does the opponent process theory explain?The opponent process theory explains how cones connect to ganglion cells and how certain wavelengths of light stimulate or inhibit opposing cells. The complementary colour theory explains which wavelengths correspond to which colours and how the brain processes these colours.In normal circumstances, being afraid of something is an example of the opponent process theory. According to the opponent process theory, the more a person experiences fear, the less the fear affects them. This decrease in fear may continue until the situation is no longer frightening.According to the opponent-process theory, there are three opponent channels, each with an opposing colour pair: red versus green, blue versus yellow, and black versus white. Ewald Hering, a German physiologist, proposed the theory for the first time in 1892.When you stared at the red image, your brain became accustomed to it and suppressed the signals it received from red cells. When you switched your gaze to the white paper, your brain saw less red light and mentally "subtracted" red from what it was seeing.To learn more about opponent-process theory refer :
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a convenient cloning vector with which to introduce foreign dna into e. coli is a(n):
Answers
The most commonly used cloning vector for introducing foreign DNA into E. coli is a plasmid.
Plasmids are small, circular, double-stranded DNA molecules that can replicate independently from the chromosomal DNA of the host cell. They often carry antibiotic resistance genes that allow for selection of cells that have taken up the plasmid.
The most popular cloning vector for E. coli is the pUC19 plasmid, which is a small, high-copy-number plasmid that contains several cloning sites for inserting foreign DNA, as well as an ampicillin resistance gene for selection. Other commonly used vectors include pBR322, pBluescript, and pGEM. These vectors are designed to be easy to manipulate in the laboratory, and they allow for the efficient cloning and expression of foreign genes in E. coli.
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what extraneous variables might have affected how the results came out in the osmosis experiment? describe three
Answers
1. Temperature: Changes in temperature can affect how quickly molecules move through the membrane, which can influence the rate of osmosis.
2. Concentration of the solution: A higher concentration of solutes in the solution can slow down the rate of osmosis.
3. Size of the molecules: Larger molecules may move more slowly through the membrane, which can impact the rate of osmosis.
What is osmosis?
Osmosis is the process by which substances, such as water, move from an area of higher concentration to an area of lower concentration through a selectively permeable membrane. Osmosis plays an important role in many biological processes, including the absorption of nutrients, the regulation of cell volume, and the movement of water across cell membranes.
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Wether the apple has a taproot or a fibrous root
Answers
Answer:
taproot
Explanation:
Apple trees roots consist of a deep taproot and lateral fibrous roots. The taproot is analogous to the carrot, which is a taproot. Lateral fibrous roots can extent to more than twice the spread of the canopy of the apple tree and are influenced by soil, water availability and competition from the roots of other plants.
Answer:Tap roots.
Explanation:Because the roots are long.
How can a shortage of nutrients harm organisms in an ecosystem? How can an excess of nutrients harm organisms in an ecosystem? Give an example of each scenario to support your answers.
Answers
Answer:
Explanation:
Shortage of nutrients in an ecosstem can harm an organism because when nutrients are scarse or very limited for organism and did not meet up with the organism requirements, there will be reduced metabolism and this can cause malfunction. Shortage of nutrients can lead to decline in growth and can lead to spring up of some diseases in the organism because enough nutrients us not available for good metabolic processes and fight diseases.
For example when an organism is deficient in vitamins and carbohydrates, the organism will not have energy to power metabolic processes and for it's activities and vitamins deficient will make the organism not to have the ability to fight against disease.
Too much of nutrients also affect organisms negatively. When there is much build up of nutrients, it can be harmful to the organisms and restrict metabolic processes.
For example too much of nutriwnts like too much of fat can block blood artieries and veins and thus can lead to inability of blood to flow .
PLEASE HELP ME ASAP THANKS!!
compare the process of digesting food in an amoeba (unicellular) to those in a mouse (multicellular),
Answers
The process of digesting food in an amoeba (unicellular) is based on the invagination of the plasma membrane in a process called endocytosis, while digestion in a mouse (multicellular) involves a series of specialized organs that form the digestive system.
What is the invagination of the plasma membrane or endocytosis?The invagination of the plasma membrane or endocytosis is the process by which the plasma membrane is pulled inward, creating a small invagination or sac for the transport of materials within the cell.
Therefore, with this data, we can see that endocytosis is a cell process while the digestive system involves many coordinated processes during digestion.
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In the event of a divorce which of the following would allow a divorce to continue receiving group health coverage under an insured Spouses plan for an additional 36 months
Cobra
Answers
In the event of a divorce, Cobra would allow the divorcee to continue receiving group health coverage under an insured Spouses plan for an additional 36 months.
What is a spouse plan? A spouse plan is a healthcare plan that is provided by an employer to an employee and their spouse. This insurance policy is usually offered to employees as part of their benefits package. What is divorce?Divorce is a legal proceeding that terminates a marital relationship and enables both parties to go their separate ways. A divorce decree, which is a court order, declares the termination of a marriage and outlines the terms and conditions of the dissolution. What is Cobra? COBRA is an acronym for Consolidated Omnibus Budget Reconciliation Act. It is a law that gives employees and their dependents the right to maintain group health insurance coverage for a limited time after a qualifying event such as divorce, job loss, reduction in work hours, or the death of the covered employee.
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If a cell wants to increase the flow through its cell membrane, what should it do?
Answers
Answer:
increasing either the distribution coefficient or the diffusivity for the transported solute.
Explanation:
there isn't a complete direct answer to this question, but this is how permeability can increase within the cell.
Explain the adaptations for root hair cell
Answers
Answer:
they have thin membranes to allow diffusion of substance for short distance
they are numerous to increase the surface area of absorption
hope this helps
A scientist tags a phospholipid found in the Golgi apparatus. A while later this phospholipid has moved to a different location in the cell. Which of these is the most likely location of this phospholipid
Answers
The lysosomes, the plasma membrane is the most likely location of this phospholipid when from Golgi apparatus phospholipid has moved to a different location in the cell.
What is Golgi apparatus?Proteins obtained from the ER are further processed and even sorted in the organ termed as Golgi apparatus, also known as Golgi complex, where Proteins are eventually moved to lysosomes, the plasma membrane, or secretion. the Golgi apparatus also produces sphingomyelin and glycolipids.Phospholipid:A class of polar lipids referred as phospholipids (PL) is composed up of two fatty acids, a glycerol unit, and a phosphate group which is esterified to an organic molecule (X) like choline, ethanolamine, inositol, etc.
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describe three mechanisms for genetic diversity, and give examples of each mechanism. discuss how these processes can result in beneficial genetic outcomes, as well as how they can produce disease and disorders.
Answers
There are three main mechanisms for genetic diversity: mutation, genetic recombination, and gene flow.
The mutation is a process that introduces new genetic variation into a population. It can occur spontaneously or be induced by exposure to mutagens and can result in a wide range of effects on an organism's phenotype. For example, a mutation in the gene that produces hemoglobin can lead to sickle cell anemia, but the same mutation can also confer resistance to malaria in heterozygous individuals.
Genetic recombination occurs when two different parental chromosomes exchange genetic material during meiosis. This process can lead to novel combinations of alleles and genetic diversity. For instance, crossing over during meiosis results in new combinations of genetic material in offspring.
Gene flow is the transfer of genetic material between populations. This process can result in new alleles being introduced into a population or can increase the frequency of existing alleles. Gene flow can be beneficial in small populations, where it can increase genetic diversity and prevent inbreeding depression. However, it can also lead to the spread of deleterious alleles or even diseases.
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what statement describes the reaction of hydrogen peroxide
Answers
With certain organic compounds, hydrogen peroxide reacts to form hydroperoxides or peroxides,
What is the reaction of hydrogen peroxide?Hydrogen peroxide in a saturated solution decomposes on warming to give oxygen, on the report of the equation: several of which are used to begin polymerization reactions. In most of its reactions, hydrogen peroxide oxidizes other material, although it is itself oxidized by a few compounds, such as potassium permanganate.
explanation. Hydrogen peroxide is a colorless liquid at room temperature with a bitter taste. little amounts of gaseous hydrogen peroxide occur naturally in the air. Hydrogen peroxide is shaky, decomposing readily to oxygen and water with the release of heat.
So we can conclude that the decay of hydrogen peroxide is an example of a disproportionation reaction.
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what has most likely happened if an animal is entrapped? use your knowledge of the latin prefix en- to help you answer.
Answers
If we say that an animal is entrapped, we mean that the animal has been captured.
Hence, the option B. "It has been captured" is the correct option.
The Latin language uses a lot of prefixes as well as suffixes. Some of the prefixes include "ad-" which means towards, "ante-" which means before, "circum-" which means around etc.
In Latin, the prefix "en-" basically means within or in. It has also been used in old-French, English and German. The word entrapped therefore can be broken as en-trapped which would mean "into the trap" indicating that the animal has been captured.
--The given question is incomplete, the complete question is
"What has most happened if an animal entrapped ? Use your knowledge of the Latin prefix to help you answer
A. It has been released
B. It has been captured
C been running quickly
D. It has hidden behind something"--
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Which event is most likely evidenced by the appearance of a new organism in the fossil record?
Responses
A new species evolved.
A change in climate occurred.
Optimal conditions finally preserved an old species.
Migration brought back an old species
Answers
The most likely scenario from the appearance of a new organism is that "A new species would have evolved."
kuan, p.-f. et al. (2019) enhanced exposure assessment and genome-wide dna methylation in world trade center disaster responders. eur j cancer prev, 28, 225–233.
Answers
The study by Kuan et al. (2019) focused on world trade center disaster responders and aimed to improve exposure assessment and investigate genome-wide DNA methylation in this population.
The study conducted by Kuan et al. (2019) aimed to assess the exposure and investigate genome-wide DNA methylation in world trade center (WTC) disaster responders. The responders were individuals who provided assistance and support during the aftermath of the WTC disaster. The researchers aimed to improve the assessment of their exposure to various environmental factors, such as airborne contaminants, and examine the potential impact on their DNA methylation patterns.
DNA methylation is an epigenetic modification that can influence gene expression and cellular function. By studying genome-wide DNA methylation, the researchers sought to identify potential changes associated with exposure to hazardous substances at the disaster site. Understanding these epigenetic modifications could provide insights into the long-term health effects and molecular mechanisms involved in response to such environmental disasters.
The study utilized advanced techniques for exposure assessment and performed genome-wide DNA methylation analysis to identify specific regions of the genome that may be affected by exposure. The findings of this study could contribute to our understanding of the health risks associated with disaster response and aid in developing targeted interventions for the affected population.
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Runoff pollution from farms and other non-point source is in Chesapeake Bay watershed can cause what to happen in the bay? Hurry!
Answers
Answer:
A. Toxic algae blooms that remove oxygen from the water.
Explanation:
According to my recent research, I got to know that "An abundance of healthy nutrients" can be the answer, but here it mentions "HEALTHY" but the nutrients that are coming from the fertilizers, are only good for plants, not for other things that live in the water (fish). So, that's why, An abundance of healthy nutrients is NOT the answer.
A huge overpopulation of oysters is also NOT the answer either.
And, Plastic to wash up on the shore of the bay, can be one answer, but isn't.
So, your answer is A. Toxic algae blooms that remove oxygen from the water.
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Thank You!
Answered by: ms115
#learnwithbrainly
Answer:
lol, i think the answer is all of these lol
Explanation:
I would just say to mark the other guy brainliest, cause he's good ,and that too, i not sure this is right answer
1. What are two of the evidence-based ways that solar parks can be modified to protect and enhance pollinator biodiversity, according to these researchers?
Answers
According to researchers, there are two evidence-based ways to modify solar parks to protect and enhance pollinator biodiversity.
The first method involves incorporating native flowering plants within the solar panel arrays. This provides a habitat for pollinators such as bees and butterflies, increasing their numbers
. The second method involves reducing the frequency of mowing or maintenance in the areas surrounding the solar panels.
This allows for the growth of natural vegetation, which provides a food source for pollinators and also creates a more natural habitat. Both of these modifications have been shown to positively impact pollinator biodiversity in solar parks, making them more environmentally sustainable.
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