The fossil record indicates that the earliest prehistoric birds emerged during the Jurassic period. All modern birds have evolved from these early, reptile-like birds.
Based on their common ancestry, which of the following is most likely true about modern birds?
A.
Modern bird species cannot undergo evolutionary changes.
B.
Modern bird species share many genetic similarities.
C.
Modern bird species are all genetically identical.
D.
Modern bird species do not share any genetic similarities.
Answer: B. Modern bird species share many genetic similarities.
Explanation:
When organisms are said to have a common ancestor, it means that they share many genetic similarities but are not identical due to evolution and cross-breeding. For instance, siblings may have the same parents but they will not be genetically identical even though they have a lot of similar traits owning to their parents have different traits.
The same is true for birds. They share the genetic characteristics of their common ancestor but as time went on and evolution took place, they changed in some ways and so are no longer genetically identical.
in which sealed container would the organisms be able to continuously cucle 02 and Co2 gases
The container or jar with snails crawling on the living plants would be the one where organisms be able to continuously cycle oxygen and carbon dioxide gases. Thus, the correct option is B.
What is Gaseous exchange?Gas exchange is the physical process by which different gases move passively by diffusion across a surface. For example, this surface might be air or water interface of a water body, the surface of a gas bubble in a liquid, or a biological membrane which forms the boundary between an organism and its extracellular environment.
A sealed container is mainly comprised of a jar with snails which is crawling on the living plants, represents continuously cycle oxygen gas and carbon dioxide gases between the two organisms. The plants produce oxygen gas by consuming carbon dioxide in the photosynthesis process, and the snails produce carbon dioxide and consume oxygen gas during the respiration process.
Therefore, the correct option is B.
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Your question is incomplete, most probably the complete question is:
In which sealed container would the organisms be able to continuously cycle O2 and CO2 gases?
A. A jar with a lizard eating a snail
B. An jar with snails crawling on living plants
C. A room with a cat chasing a mouse
D. A room with mice eating moldy grain
the____is the portion of earth that can support living things.
Answer:
The Biosphere
Explanation:
The biosphere is a thin life-supporting portion on Earth's surface, extending a few km into the atmosphere to the deep-sea. It is composed of living organisms and nonliving factors from which the organisms derive energy and nutrients.
How are biomolecules related to the cell cycle?
Answer:
Among biomolecules, nucleic acids, namely DNA and RNA, have the unique function of storing an organism's genetic code—the sequence of nucleotides that determines the amino acid sequence of proteins, which are of critical importance to life on Earth. ... Proteins themselves are major structural elements of cells.
Explanation:
Among biomolecules, nucleic acids, namely DNA and RNA, have the unique function of storing an organism's genetic code—the sequence of nucleotides that determines the amino acid sequence of proteins, which are of critical importance to life on Earth. ... Proteins themselves are major structural elements of cells.
Bio molecules are related to the cell cycle such that they partake in the
numerous activities such as cell division that occur in cell cycle.
Bio molecules such as DNA and RNA store the genetic traits of the
organism. These traits are usually passed to the offspring during cell division
in the cell cycle. DNA contains other bio molecules such as protein which
forms the base pairs.
Cell division such as meiosis gives rise to four unique daughter cells and
mitosis gives rise to two identical cells. The bio molecules basically assist in
the passing of traits to their offspring.
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4. What was Lamarck's theory of evolution?
Suggest three reasons why many amphibian species are endared
Answer:
what's endangering amphibian? (based on my note)
1) climate change (temperature//water level)
2) pollution and disease
3) habitat destruction
I hope it's help ♡︎
In order for a trait to be considered a competitive advantage, the trait must(1 point)
allow the individual to utilize fewer food and water resources to survive.
allow the individual to have fewer diseases and not get sick.
allow the individual to be stronger and outcompete others.
allow the individual to survive better and reproduce more in that environment.
Why are hooves more advantageous for horses in the modern era?(1 point)
Hooves are better equipped for environments with plains.
Hooves are better suited with environments with wetter climates.
Hooves are better suited for environments with a wider range of vegetation.
Hooves are better suited for environments with plenty of trees.
Imagine a major volcanic eruption has dramatically changed the environment on an island such that the average temperature and available sunlight are much lower. Of the following species present on that island, which species is most likely to adapt and evolve to this change instead of going extinct?(1 point)
a large mammal species with a low reproduction rate and specific food needs.
a bird species with specific nesting requirements that only feeds on one type of seed.
a reptile species with a high reproduction rate and very similar individuals.
an insect species with a high reproduction rates and a significant mutation rate
Of the four factors that affect the evolution of species, which factor is driven by random events?(1 point)
Speciation
Competitive advantage
Genetic variation
Differential survival and reproduction
Which factor will most likely guarantee evolution rather than extinction?(1 point)
larger animal sizes
changes in available food sources
changes in the environment
higher reproduction rates
Answer:
Did you ever get the answers?
Explanation:
Any trait that is to be considered as a competitive advantage, trait must allow the individual to survive better and reproduce more in that environment.
What is evolution?
Evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. It is decent with modification from preexisting species.
The trait that has the ability of relative fitness which means relative survival and relative reproduction shall be considered as more competitive. Both of these, criteria possess a competitive advantage.
Hooves are more advantageous for horses in the modern era because hooves are better suited for environments with a wider range of vegetation. Hooves help horses run farther and faster on the open prairies, helping them flee from predators and find fresh grass for grazing.
The species which is most likely to adapt and evolve to this change is an insect species with high reproduction rates and a significant mutation rate. This is because insect belongs to r-selected species that have fewer chances of extinction as compared to k-selection species.
The factor which is driven by random events is Genetic variations.
The factor which is most likely guarantee evolution rather than extinction is higher reproduction rates. Because a higher reproduction rate is a characteristic of r-selected species.
Therefore, the option which is correct for each specific question is briefly described.
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Maribel brings her backpack to the lab. She is also given a set of lab materials. What is the safest way for Maribel to organize these items in the lab?
Both the personal items and the lab materials should be arranged neatly along the edge of the table.
Which class of drugs reduces pain?
Steroids
Hallucinogens
Depressants
Narcotics
Answer:
Narcotics
Explanation:
Narcotics, or otherwise commonly known as opioids are massively known for pain relief. There's opioid epidemic here in US b/c people are abusing the drug at extremely alarming rates. You might have heard of codeine, morphine and fentanyl, these are some of the most potent and dangerous drugs if used without proper prescription.
2. Which is true of the human circulatory
system?
A It transports oxygen and nutrients.
B It makes blood cells.
C It breaks down food and releases nutrients.
D It is the first line of defense against pathogens.
Answer: B
Explanation:
The circulatory system includes the heart, veins, arterioles, etc.. Includes blood as well
Please help I am begging youuuu !???!?
Answer:
i think it might be D
Explanation:
very very very sorry if Im wrong
DNAS1----- DNAS2---------mRNA---------- tRNA---------- Amino Acid
A
U
G
------------------------------------------------------------------------------------------------
T
A
A
------------------------------------------------------------------------------------------------
G
C
G
-------------------------------------------------------------------------------------------------
U
A
A
Complete the table
Answer:
a,u,g would give you u,a,c
t,a,a would give you a,u,u
g,c,g would give you c,g,c
u,a,a would give you a,u,u
Explanation:
hope this helps have a good weekend
New combinations of DNA can be formed from several sources in the
genetic material passed from parents to offspring including mutations
caused by environmental factors, errors during replication, and meiosis.
Choose one of the above factors and describe how it specifically leads to a
new combination of DNA.
Your answer
Meiosis is the common factor which is responsible for the production of new combinations or recombination in the organisms which reproduce through sexual mode of reproduction.
What is Meiosis?Meiosis is a special type of cell division which occurs in the germ cells in organisms which reproduce through sexual mode of reproduction. These organisms produce the gametes, such as sperms or egg cells. Meiosis involves two rounds of division which ultimately result into formation of four daughter cells with only one copy of each chromosome.
Recombination or new combination results when two molecules of DNA exchange pieces of their genetic material with each other. One of the most common examples of recombination can be observed during meiosis specifically, during the prophase I stage, when homologous chromosomes line up in pairs and swap some segments of their DNA.
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Osmosis is the passive transport of what substance
Answer:
Osmosis is the passive transport of water molecules across a selectively permeable membrane. In osmosis, water moves from an area of high concentration (high water potential) to an area of low concentration (low water potential) in order to balance out the concentration on both sides of the membrane. This process can be observed in living cells, where the membrane surrounds the cell controls the flow of water and other molecules in and out of the cell.
In simple words, Osmosis is a type of diffusion that specifically refers to the movement of solvent molecules through a selectively permeable membrane. It is a fundamental concept in biology and is crucial for the proper functioning of cells and organisms.
Which of the following statements is TRUE?
A.
Testosterone is the only male sex hormone.
OB.
Male sex hormones are called androgens.
O C.
Male sex hormones are called steroids.
OD.
All of the above
Answer:
B is the answer
Explanation:
Answer:
A.
[tex]\huge\mathfrak\red{Answer...} \\ \\ \small\mathfrak\purple{testosterone \: is \: the \: only \: male \: sex \: hormone...} \\ \\ \huge\mathfrak\blue{hope \: it \: helps..}[/tex]
The sweet potatoes found underground contain starch.
Explain how starch in the sweet potato is produced from carbon dioxide in the
Answer:
The correct answer s - by the photosynthesis process.
Explanation:
Plants use the sunlight to convert the atmospheric carbon dioxide and water to oxygen and glucose for their food and energy, this process is called as photosynthesis. In This process, glucose is formed that is linked together to form the storage carbohydrate form, starch, that can use by plants later and store in the different parts of the plants.
In plants like potato and sweet potato or the plants that has tuber or grains, store the starch in their tuber or grains by transporting the starch to the these parts.
Which of the following will limit a population's growth?
limited access to water
plenty of room for each organism
unlimited resources
low death rate, and high birth rate
Answer:
Limited access of water.
Humans have a double circulatory system. There is a low pressure circulation and a high pressure circulation.
Explain how the structure of the heart enables it to pump blood into circulations at different pressures.
Answer:
The human heart is a pump. It pumps blood around the body at different speeds and at different pressures according go the body's needs. It can do this because the wall of the heart is made from cardiac muscle. Blood is moved through the heart by a series of contractions and relaxations of cardiac muscle in the walls of the four chambers.
Which numbers are all characteristics of life things?
1. Complex, ordered organization consisting of one or more cells
2. Use and transforms energy to perform work
3. Sensitive and responsive to the external environment
4. Regulate internal conditions
5. Grow, develop, and reproduce
6. Evolutionarily adapt and over time undergo descent but with modification
PLEASE HELP MEEE I NEED HELP ON THIS QUESTION
Answer:
C. Spore formation
Explanation:
Option C above is the correct answer.
Spore formation is actually a method of asexual reproduction. Fungi actually reproduce asexually via spore formation. Some examples of organisms that reproduce via spore formation are Rhizopus, mushroom, mucor, etc.
The spores are usually stored in sacs which are known as sporangia. When there is a bursting of the sac, spores that are single-celled, thick and thin walled are obtained/formed. The spores are usually resistant to environmental conditions.
What is evolutionarily classification
Answer:
A monophyletic group must include all species that are descended from a common ancestor, and cannot include any species that are not descended from that common ancestor. Modern evolutionary classification uses a method called cladistic analysis to determine how clades are related to one another. Evolutionary taxonomy, evolutionary systematics or Darwinian classification is a branch of biological classification that seeks to classify organisms using a combination of phylogenetic relationship (shared descent), progenitor-descendant relationship (serial descent), and degree of evolutionary change.
Explanation:
The goal of phylogenetic systematics, or evolutionary classification, is to group species into larger categories that reflect lines of evolutionary descent, rather than overall similarities and differences.
How would i fill this in?
Relation between variables are the different born percentages in sea turtles.
What percentage of sea turtles are female?
Green sea turtles from cooler southern nesting strands were about 65 to 69 percent lady, testing showed. Sea turtles from warmer northern strands leaned indeed more heavily womanish, with86.8 percent of adult turtles,99.8 percent of sub-adult turtles, and99.1 percent of juvenile turtles turning out to be womanish.
How long does it take for a sea turtle to incubate?
The incubation time for utmost species is 45 to 70 days. exploration indicates that the coitus of an embryo is dependent on the temperature of the nest. Lower nest temperatures produce further males; advanced temperatures produce further ladies. For green ocean turtles, a nest temperature of 28 °C(82 °F) or below produces substantially males.
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The graph shows the line of best fit for data in a scatterplot.
What does the line of best fit indicate about the correlation between the variables?
Answer: B
Explanation: Trust
a.
Which of the following best describes daily temperatures in deserts?
hot during the day and cold at night
b. hot during the day and warm at night
C. cool during the day and very cold at night
d. they depend upon the type of desert and its location
Please select the best answer from the choices provided
Ο Α
ОВ
С
D
Answer:
A
As sand cannot hold the heat for long, it gets cooler as soon as the sun sets
Explanation:
A
Sana maka touilong makatulong
Check all characteristics of life:
- Complex, ordered organization consisting of one or more cells (1)
- Use and transforms energy to perform work (2)
- Sensitive and responsive to the external environment (3)
- Regulate internal conditions(4)
- Grow, develop, and reproduce(5)
- Evolutionarily adapt and over time undergo descent but with modification(6)
The characteristics of life are complexity, ordered organization, energy use and transformation, and regulation of internal conditions. and all of the statements about life forms are correct.
What are the characteristics of the life forms?There are both eukaryotic and prokaryotic life forms, as well as unicellular and multicellular animals, but all life forms grow, take nutrients, adapt, and evolve; some can regulate their internal temperature, use energy, and transform it, such as in photosynthesis.
Hence, the characteristics of life are complexity, ordered organization, energy use and transformation, and regulation of internal conditions. and all of the statements about life forms are correct.
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1) Why is the epicenter of the earthquake limited to two locations after you have data for him to seismograph stations?
2)Why is it important to receive data from three locations before sending out the emergency response team to an earthquake?
Answer:
Answer for question 2:
It is important to receive data from three separate locations because the more we know about the seismic waves and the places that they are more we gain for learning about them.
Explanation:
It is important to receive data from three separate locations because the more we know about the seismic waves and the places that they are more we gain for learning about them.
What is seismograph?Although it is frequently used interchangeably with "seismograph," a seismometer is the internal component of the seismograph, which can be a pendulum or a mass set on a spring.
Seismographs are tools used to capture ground motion during an earthquake. They operate as a part of a seismographic network and are buried throughout the world. The Chinese scholar Chang Heng created the first "seismoscope" in the year 132 A.D.
However, this just served to signal that an earthquake was taking place; it did not record earthquakes. In 1890, the first seismograph was created.
A seismograph is firmly fixed to the earth's surface so that, with the exception of the mass on the spring, the entire instrument shakes when the earth moves.
Therefore, It is important to receive data from three separate locations because the more we know about the seismic waves and the places that they are more we gain for learning about them.
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The skeleton of the human hand is similar in structure to
a. Bird's wings
b. Ancient fish
c. Dog's legs
d. All of the above
Answer:
a. Bird's wings
Explanation:
When compared to Eurkaryotic cells , prokaryotic cells are almost always
Answer:
There are several differences between the two, but the biggest distinction between them is that eukaryotic cells have a distinct nucleus containing the cell's genetic material, while prokaryotic cells don't have a nucleus and have free-floating genetic material instead
Explanation:
what is the role of tRNA in translation process?
Answer:
tRNA function at specific sites in the ribosome during translation which is a process that synthesizes a protein from MRNA molecule.
Explanation:
When a tRNA recognizes and binds to its corresponding codon in the ribosome, the tRNA transfers the appropriate amino acid to the end of the growing amino acid chain.
In which step of protein synthesis does the rRNA make protein?
Answer:
Translation is the second part of the central dogma of molecular biology: RNA → Protein. It is the process in which the genetic code in mRNA is read to make a protein. Translation is illustrated in the diagram below. After mRNA leaves the nucleus, it moves to a ribosome, which consists of rRNA and proteins.
Explanation:
Within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis — the stitching together of amino acids to make a protein molecule. In fact, rRNA is sometimes called a ribozyme or catalytic RNA to reflect this function.