How many taxa or levels exist in the phylogentic?
a)7
b)4
c)6
d) 8
Select which statements are a part of natural selection.
organisms better adapted to their environment tend to survive
organisms better adapted to their environment tend to reproduce and increase in number
organisms pass on their traits to succeeding generations.
over time, favorable traits become more common in a population
Answer:
organisms better adapted to their environment tend to reproduce and increase in number
Answer: *organisms better adapted to their environment tend to survive
*organisms better adapted to their environment tend to reproduce and increase in number
*organisms pass on their traits to succeeding generations.
*over time, favorable traits become more common in a population
Explanation: all of them are correct :)
Mengapakah penggunaan mikroskop
elektron penting dalam mengkaji sel?
Answer:
Mikroskop elektron mampu membesarkan saiz sel dengan kuasa gandaan yang tinggi
This diagram summarizes a method to group land plants.
A diagram summarizes a method to group land plants. Plants are divided into 1 and 2. 2 is divided into 3 and 4. 4 is divided into 5 and 6.
Which row in the table best represents the evolution of plants that match the diagram?
Labels for Plant Classifications
1
2
3
4
5
6
A
Gymnosperms
Angiosperms
Seed plants
Seedless plants
Monocots
Dicots
B
Dicots
Monocots
Angiosperms
Gymnosperms
Seed plants
Seedless plants
C
Seed plants
Seedless plants
Angiosperms
Gymnosperms
Dicots
Monocots
D
Seedless plants
Seed plants
Gymnosperms
Angiosperms
Monocots
Dicots
Answer:
The correct answer is D.
Explanation:
The plants are grouped formally into 12 phyla (phylum plural) and are collected in four groupings. These four groupings are based on the history of the evolution of important plant characteristics:
Nonvascular plants evolved earliest. They are distinct from the algae because they preserve the embryo inside of the reproductive structure after fertilization. There is no vascular tissue, xylem, and phloem for these plants to convey nutrients, water, and food. For example, moose, liverwort, and hornworts. These plants do not grow very high without vascular tissue.Vascular seedless plants have evolved into non-vascular tissue but no seeds. The fern, fern, club moss, and horsetails are examples. These plants could grow larger with vascular tissue.Gymnosperms have evolved into seeds but have no blooms. For example, redwood, fir, and cypress trees. Gymnosperms. Gymnos in Greek means "naked"; the gymnosperm seeds are bare, not floral.Flowers or angiosperms have developed into vascular tissue, seeds, and flowers. Angiosperm for example includes magnolia, roses, tulips, and tomatoes.Answer:
The correct answer is D.
Explanation:
State any two human activities that have a direct impact on soil formation
Answer:
Nonetheless, some human activities have clear direct impacts. These include land use change, land management, land degradation, soil sealing, and mining. ... This in turn leads to loss of soil carbon and other nutrients and to changes in soil properties and in soil biodiversity.
which type of gas or gasses are ressponsible for the start of life on earth
Answer:
Before life began on the planet, Earth's atmosphere was largely made up of nitrogen and carbon dioxide gases. After photosynthesizing organisms multiplied on Earth's surface and in the oceans, much of the carbon dioxide was replaced with oxygen.
Explanation:
please mark me as brinalist
A molecule of water is comprised of:
A. One atom of negatively charged hydrogen and one atom of positively charged oxygen.
B. One atom of negatively charged oxygen and one atom of positively charged hydrogen.
C. Two atoms of positively charged hydrogen and one atom of negatively charged oxygen.
D. Two atoms of negatively charged hydrogen and one atom of positively charged oxygen.
The muscle fibers within muscle cells are divided into myofibrils, which are further divided into _____, the contractile units of muscles.
Answer:
the answer is sarcomeres
[tex]what \: is \: photosynthesis \: {?} [/tex]
[tex]\sf\purple{Photosynthesis}[/tex] is a process by which phototrophs convert [tex]\sf\pink{light\:energy}[/tex] into [tex]\sf\red{chemical\:energy}[/tex] .
The word “photosynthesis” is derived from the [tex]\sf\blue{Greek}[/tex] words "phos" (which means “light”) and "σύνθ-εóîς" (which means “combining together.”) And so it means “combining together with the help of light.”
The process of photosynthesis occurs in [tex]\sf\green{green\:plants}[/tex] (the primary producers in a food chain) and a few other autotrophic organisms such as cyanobacteria, purple bacteria and green sulfur bacteria.
Following is the photosynthesis [tex]\sf\purple{formula}[/tex] :
︎︎︎ 6 [tex]CO_{2}[/tex]+ 6 [tex] H_{2}O[/tex] —> [tex] C _{6} H_{12} O_{6}[/tex] ([tex]\sf\blue{glucose}[/tex]) + [tex] 6 O_{2}[/tex] ([tex]\sf\pink{oxygen}[/tex]).
[tex]\large\mathfrak{{\pmb{\underline{\red{Mystique35 }}{\red{❦}}}}}[/tex]
Which function is performed by both goblet cells and lacrimal glands?
digestion
stress regulation
protection
growth regulation
Answer:
protection
Explanation:
The correct answer would be protection.
Goblet cells are special cells found in the epithelial layers of small and large intestines and some other organs such as those associated with the respiratory tracts. They secrete mucin and create a protective mucous layer in the walls of the intestines.
Lacrimal glands on the other hand are exocrine glands found in the eyes. They secrete the watery component of the eyes which is made up of water, electrolytes, and protein. The fluid produced by the glands protects the eyes from drying out.
Hence, both goblet cells and lacrimal glands serve protective functions.
Choose all the right answers.
When the leaf of a fern touches the ground, it may produce a new plant:
by budding from its stem
by growing roots at the point of contact
by planting a spore
by vegetative reproduction
Answer:
I think it is by planting a spore
Birds use specific songs, coloring, and mating dances to attract mates of their species. This is an example of _____ reproductive isolation.
Answer:
prezygotic.
Explanation:
In Ecology, when birds use specific songs, coloring, and mating dances to attract mates of their species. This is an example of prezygotic reproductive isolation.
The role played by the systems of the body in ensuring survival of farm animals in hot and dry climates
Answer:
Answer to the following question is as follows;
Explanation:
Domesticated animals have a natural instinct to seek out cover and seek refuge from the scorching heat. Their bodies, on the other hand, have inherent defensive systems to help them cope with heat and dryness. One of these is their covering or fur, which gives sun protection.
Animals living in hot, dry climates consume a lot of water, which is subsequently stored in their tissues to keep them from becoming dehydrated. Sweating is accomplished by certain animals by keeping their mouths open.
If you were working for a pharmaceutical company as part of a drug discovery team, which of these enzyme inhibitors would you suggest as a productive avenue for drug development? Group of answer choices a compound that inhibits enzymes by significantly changing the pH throughout the body a drug to treat diabetes that irreversibly inhibits an enzyme in the metabolic pathway to synthesize glucose a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract a compound that acts as a competitive inhibitor for a digestive enzyme produced only in the presence of certain foods
Answer:
The correct answer is - a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract.
Explanation:
In the given all the situation or conditions that is practical and possible it the drug that develop to treat high blood pressure by reversibly inhibiting an enzyme that catalyzes the chemical that leads to constirctions of the blood vessels.
These chemical cause blood vessel constrict and that leads to high blood pressure therefore inhibiting such enzyme that use to produce these chemical is a practicle solution for high blood pressure.
Part B: What is the name of the process that has occurred, and how would it likely occur in this population? (2 points)
Answer:
Explanation:
Please it seems your question is incomplete
in your own words, what is the definition for Double-helix?
A pair of parallel helices intertwined about a common axis, especially that in the structure of the DNA molecule.
All humans have shared biological needs, such as a need for food. However, in China people have an aversion to cheese, a food that is highly desired in the United States; and in the United States most people would find snake or dog meat inedible, even though both are enjoyed in China. How can this be explained
Answer:
The dietary differences between China and the US can be explained by the cultural, social and economic background that each of these countries had.
Explanation:
The main difference in food between countries is due to the culture of each country. This culture determines which elements are apt to be consumed and which are not. An example of this is dog food in China, which is very cultural, while the US and most Western countries do not welcome dog food because of its cultural context. Another example can be seen in the feeding of guinea-pig meat in Peru, however, other Latin American countries do not appreciate this type of meat.
The economic and social history of countries can also cause dietary differences. This is because these two factors change society and promote access to more modern and archaic foods.
where can we find most of the gases ? to the left or right section ? explain .
Insects: Please choose the correct answer from the following choices, and then select the submit answer button. typically have a younger flying life stage and an older aquatic life stage after metamorphosis. generally give birth to live young. typically mate and produce young during their larval stage. have a respiratory system with spiracles connecting to tracheae.
Answer:
The correct option is ( have a respiratory system with spiracles connecting to tracheae).
Explanation:
The class INSECTA are under the phylum arthropoda which is the largest phylum in the animal kingdom. The insects are mainly land animals, they are widespread and adapted to all types of environment. They are also the only invertebrates that can fly. Examples of insects include: ants, butterflies, beetles, aphids and grasshoppers.
An insect has a well-defined head, thorax and an abdomen. The head had six segments and bears a pair of jointed antennae, compound eyes, simple eyes and mouthparts. The thorax had three segments, each bearing a pair of jointed walking legs. The abdomen has eleven segments and may have sensory and reproductive structures.
An insect carries out gaseous exchange by means of a network of open air tubes or TRACHEAE inside it's body. These tubes have openings called SPIRACLES to the exterior. Therefore the insects have an respiratory system with spiracles connecting to tracheae.
During the process of genetic recombination, crossing over occurs between two nonsister chromatids. DNA segments are exchanged between two nonsister chromatids during meiosis I. None of the above. maternal and paternal chromosomes pair and physically exchange DNA segments. All of the above.
Answer:
DNA segments are exchanged between two non-sister chromatids during meiosis I.
Explanation:
An exchange of chromosome segments or parts between non-sister homologous chromatids occurs which is also called crossing over. This crossing over occurs in the meiosis I that is responsible for the variation in the offspring produced. The formation of hybrid species occurs due to this exchanged of DNA segments between two non-sister chromatids.
Which is NOT involved at the beginning
of a nerve impulse?
A. reaching the threshold
B. a strong stimulus
C. sodium leaving the cells
D. negative charge inside the cell
Links and random responses will be reported
Answer:
Explanation:
it would be c////////////////////
A species of fly has two alleles for the length of their legs.The allele for short legs is recessive, and is represented by q. If 21 of 100 organisms have short legs what is p
Answer:
0.49
Explanation:
just because
1. Complete the unfinished DNA strand from below.
2. What m-RNA strand would be formed from the DNA strand that you just made in #1 above?
3. Using the codon chart in the lesson, what amino acids would be aligned from the following m-RNA strand?
A U G G C G G A A
4. If the first base in the sequence above (#3) were mutated to a C, what would that do to the amino acid sequence?
5. If you were given a single tiny chunk of a nucleic acid strand and asked if it was DNA or RNA, what things would you look for to tell?
Explanation:
1. is T G C A T because it is a DNA as it contains thymine.
2. so mRNA strand would be U G A C G U A as it is in RNA so it would be uracil with adenine.
3. is Met- Ala- Glu
4. if is mutated to a C then it would be C U G G C G A A
so it would be Leu-Ala-Glu.
5. you can look for if it contains thymine or uracil. If thymine then DNA if Uracil then RNA. you can also see if it is double or single strand. if double than DNA if single than RNA.
hope this helps you :)
Color blindness is a recessive sex-linked human trait. If a color-blind father and a mother with normal color vision have a color-blind son, what must be the mother's genotype?
A. XNXn
B. XNXN
C. XnYn
D. XNY
Answer:
A. XNXn
Explanation:
looks like it's a 50% chance of color blindness
What would most likely occur over time if new technologies gave us information that challenged what scientists currently understand about natural selection
Question options:
A new scientific law would be established and proven by the findings. A new scientific theory would be established and proven by the findings. A current scientific law would be revised based on the new findings. A current scientific theory would be revised based on the new findings.
Answer:
A current scientific theory would be revised based on the new findings.
Explanation:
If new findings came about and challenged the current theory of natural selection so that Darwin's theory didn't look like it was true at all, the initial theory(darwin's theory of natural selection) would not be entirely discarded but revised according to these new findings and then form a sort of backbone to this new theory which would be based on findings of many independent researchers and not just one. Example: how some of Sigmund Freud's theories or Aristotle's may not be entirely valid today but still works as a fundamental for understanding other theories.
What are practical applications of genetic engineering?
Answer:
Medicine, agriculture, animals, and even human mutations ;o
Explanation: Nothing much to explain.
Which layer of Earth has the highest temperatures at 5000-6000 Celsius?
Answer:
Inner Core
Explanation:
The inner core is the most inner layer of the earth. The inner core contains iron, the iron in the inner core is not pure (so not just iron) scientists believe it contains sulfur and nickel and also smaller amount of other elements. The inner core is extremely hot it is somewhere between 9000 and 13000 degrees Fahrenheit (5000 and 7000 degrees Celsius).
explanation credit to: katnissdiv1 on weebly
In the Punnett square fill in the shaded boxes with the alleles of each parent use B for the dominant allele (black fur) and b for the recessive allele (white fur)
Answer:
Explanation:
Under the male put BB
Next to the female bb
then first row should be Bb Bb
second row should Bb Bb
Here, all the alleles of the black parent are dominant and are represented as BB, and those of the white parent are represented as bb, and they both are purebred dominant and recessive alleles that have produced all dominant black (Bb) offspring.
What is Punnett Square?A Punnett square is a diagram used to predict the possible outcomes of a genetic cross between two parents. In this case, the parents have different alleles for a gene that determines the color of their fur. The dominant allele B produces black fur, while the recessive allele b produces white fur. The Punnett square is arranged in a grid, with each box representing one possible genotype for the offspring. The top row and left-hand column of the grid represent the alleles that each parent can contribute to their offspring. In this case, both parents are purebred,as expressed below.
Hence, black parents are dominant and are represented as BB, and those of the white parent are represented as bb, and have produced all dominant black offspring.
Learn more about the Punnett square here.
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Which of the following do all living things share?
A. The same shape
B. The same organs
C. The need to breathe
D. The same elements
Answer:
D.
Explanation:
Most living things need oxygen to survive. Oxygen helps organisms grow, reproduce, and turn food into energy
The total number of molecules of ATP produced during glycolysis is ______, which results in a net production of _____ ATP.
Answer:
The answer is "4 and 2 ".
Explanation:
The overall glycolysis ATP number is 4 of one hydroxyl group. In the first part of the glycolysis 2 ATP molecules are used, so that 2 ATP molecules are net gained. 2. In addition, 2 NADH atoms in the glycol are also created. This is why the total ATP molecules produced during metabolism are 4, resulting in a net output of 2 ATP.
