Question 23 of 30
1 Point
Which of the following traits are characteristic of all mammals?
A. They breathe through gills.
B. They walk on two limbs.
C. They lay eggs that develop outside the mother's body
O D. The mother feeds her young with her own milk.
Answers
Answer:
D
Explanation:
Humans are mammals, so let's analyze the answer choices using this information.
A. They breathe through gills
Humans don't breathe through gills, so this answer cannot be correct.
B. They walk on two limbs
Humans do walk on two limbs, but let's think of other mammals. Cats and dogs are mammals, but they walk on four, not two limbs. Therefore, this answer is not correct.
C. They lay eggs that develop outside the mother's body
Humans don't lay eggs, and neither do other mammals. This is not correct.
D. The mother feeds her young with her own milk.
Humans do feed their young using milk. Nursing their young through milk is a characteristic of all mammals.
The correct answer is D. The mother feeds her young with her own milk.
Related Questions
Ramu wants to practice crop rotation in his field. Suggest a Rabi crop and a Kharif crop, which will replenish his field with nitrogen. Which crop replenishes nitrogen and why?
Answers
Answer:
Explanation:
is a practice that involves the growing of different type of crop on the same piece of land. It is often practices by subsistence farming where the land space is not to big to accommodate all the crops to be grown separately.
Nitrogen are been replenished into the soil by leguminous crops. This is because they have root nodules which contains Nitrogen and it help fixes it back into the soil with the help of bacteria such as Azotobacter, nitrogen fixing bacteria. This bacteria acts on the nodules to help break down the Nitrogen into a form that can be useful by plants.
Example of kharif Crop is pea which are leguminous and can fix nitrogen back into the soil, maize, rice
Rabi example is wheat and barley.
Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. What is the probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY ´ RrYy?
Answers
Answer:
The probability of a cross between RRYY x RrYy to generate a yellow and wrinkled seed offspring is 0%.Explanation:
Circular and yellow seeds are overwhelming and wrinkled and green seeds are passive. It is vital to keep in mind that resective characteristics are as it were displayed when the sibling has two passive alleles for those characteristic, in the event that the descendant includes a latent allele and a overwhelming allele, the characteristic that will be presented is the overwhelming one. For this reason, able to say that a cross between RRYY x RrYy plants, would not create any descendant with wrinkled and yellow seeds. Typically since, the descendant of a crossing, must show an allele of each parent. One parent as it were has overwhelming alleles (RRYY), so able to say that all descendant will get 1 overwhelming allele for color and a overwhelming allele for seed surface, anticipating the sibling from communicating latent characteristics.
Answer:
0%
Explanation:
Edge
Which of the following is used as cellular support for cells and unicellular organisms?
A) chloroplasts
B) lysosomes
C) endoplasmic reticulum
D) microtubules
Answers
Answer:
D. Microtubules
Explanation:
Microtubules are made of proteins (largely) that make up a cell's cytoskeleton, which provides the internal support framework for the cell.
The correct option is, (D) microtubules.
The cytoskeleton of a cell, which provides the internal support structure for the cell, is primarily made up of proteins, which are the building blocks of microtubules.What is the function of the endoplasmic reticulum?In general, the endoplasmic reticulum's job is to make proteins so that the remainder of the cell can operate. It can be smooth or rough. Ribosomes, which are tiny, elongated organelles with a round shape, are found on the rough endoplasmic reticulum and are responsible for producing those proteins.Which of following organelles help with cellular movement?The cytoskeleton not only performs this structural function, but it also controls how cells move. These involve not just the internal movement of organelles and other structures (such mitotic chromosomes) through the cytoplasm, but also the motions of whole cells.Which organelle provides energy for the cell?Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).Hence, microtubules is used as cellular support for cells and unicellular organisms.
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what did charles Darwin and Alfred wallace propose
Answers
Answer:
"theory of evolution by natural selection,”
this was proposed by charles darwin and alfred wallace in the 19th century
Which phylum is a group of miscellaneous fungi that don’t fit into the other three categories? Zygomycotes Deuteromycotes Ascomycotes Basidiomycotes
Answers
Answer:
Deuteromycotes
Explanation:
Kingdom Fungi consist of eukaryotic organisms grouped into 3 phyla, with one group that doesn't fit into any of the grouped three. Each group of fungi were classified into phylum based on their reproductive life cycle. The three phyla are Zygomycotes, Ascomycotes, Basidiomycotes.
Zygomycotes produce their spores by meiosis in a structure called Zygosporangium. Ascomycotes produce their spores via meiosis in ascus (sac-like). Basidiomycotes produce their own spores via meiosis in club-like basidium.
However, a fourth group exists that has no known sexual reproductive structure (meiospores), instead it is known to reproduce asexually via mitospores. This group is called DEUTEROMYCOTES or commonly known as FUNGI IMPERFECTI. It is a group of miscellaneous fungi that doesn't fit into the classification basis of the other three phyla.
What are some of the consequences of acid rain? Thanku
Answers
The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes. The more acid that is introduced to the ecosystem, the more aluminum is released, die of biodiversity in environment and other organism that supports decomposition of material
Which would be the order of the bases on the opposite strand of dna
Answers
Explanation:
if one side is A the other would be T
if one side is G the other would be C
A-T
G-C
A pair of mice are bred several times generating the following data table. What are the most likely genotypes of the parents?
Answers
Answer:
This question lacks options, the options are:
A) FF and ff
B) FF and Ff
C) Ff and Ff
D) Ff and ff
The answer is D (Ff and ff for parent 1 and 2 respectively)
Explanation:
This question depicts a single gene coding for fur colour in mice. The gene controls two traits, black fur and white fur, encoded by alleles F and f respectively.
According to the question, a pair of mice has been bred several times to generate the same data of 22 black fur and 23 white fur mice. Based on this data, it shows that the phenotypic ratio of black to white mice is 1:1.
To get a 1:1 phenotypic ratio of black fur offspring to white fur offspring, the parents mice must have genotypes Ff (heterozygous) and ff (same recessive alleles).
In a cross between parents Ff × ff (see punnet square), offsprings with the following genotypes will be produced: Ff, Ff, ff and ff. Ff is black furred while ff is white furred.
Ff (2) : ff (2) is equivalent to Ff (1) : ff (1).
Hence, a data of 22 black mice and 23 white mice which represents a 1:1 ratio will only be produced by parents mice with genotypes: Ff and ff.
Which statement accurately describes tectonic plate movement? Tectonic plate movement can be prevented with planning. Tectonic plate movement does not cause environmental change. Tectonic plate movement does not affect organisms. Tectonic plate movement is a long-term environmental change.
Answers
Answer:
The correct answer is Tectonic plate movement is a long-term environmental change.
Explanation:
When tectonic plates in the earth started to move, this process helped the planet to evolve and to shape the continents as exist today.
Different investigation teams have discovered that plates move approximately 2.5 centimeters per year. This movement is the key to the evolution of life and the development of the planet. This slow process involves mountain formation, rocks exposure, and chemical reactions that could stabilize the temperature on the earth´s surface for millions of years. And this stable weather is essential for the evolution of life. Plates movement carries carbon inside and outside of the planet, regulating the amount of carbon dioxide in the atmosphere (greenhouse effect). In this way, it can regulate the temperature. This regulation influence in precipitations, chemical reactions that involve carbon release and minerals such as calcium, the water flow, volcanic eruptions, among other events. Plates tectonic is also responsible for life, as weathering and mineralization of the rocks release elements and nutrients that are necessary for the life of different organisms.
So, up to this point, we can say that tectonic plates movement can not be prevented with planning, it does cause environmental change by regulating temperature, and hence it affects organisms.
There are short term effects and long term effects provoked by tectonic plates movement. Earthquakes are examples of short term effects, while mountain formation, ocean formation and, clime regulation are examples of long term changes.
Plates tectonic movement is a very slow process, that might last many years. The Andes formation, for example, started approximately 200 years ago, and these mountains are still rising. The subduction process has not finished as the plates are still moving.
Answer:
its D
Explanation:
what questions do you have about water erosion?
Answers
Answer:
What causes water erosion?
Is water erosion dangerous?
what are the effects of water erosion?
Are there any advantages of water erosion?
Do you think its possible to control or stop water erosion?
I need to draw a poster on Genetics but I'm not exactly good at art. It needs a bit of information as well as at least one drawing. It doesn't have to be great just acceptable. Help would be greatly appreciated . I have already completed the other two posters just need one more.
Answers
Answer:
sorry, now I can. here you go! have a nice day!
1
Select the correct answer from each drop-down menu.
Mark's dentist gives him a shot before performing a root canal. The dentist says the shot is anesthesia and that Mark won't feel any pain. Mark
feels his gums going numb, while the rest of his body is working fine. What has the anesthesia actually done?
The anesthesia has blocked
from carrying signals to the
Answers
Answer:The anesthesia has blocked the Inter-neurons from carrying signals to the brain.
Answer
Interneurons, brain
Explanation:
Got it right in test.
If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction
The rate would increase.
The rate would decrease.
The rate would remain the same.
The rate would be zero.
Answers
Answer:increase
Explanation:
Answer:
The rate would increase
Explanation:
Which example is most likely made from both metals and gemstones?
Necklace
Soda can
Widow frame
Kitchen utensils
Answers
Answer:
A. necklace
Explanation:
Necklace is most likely made from both metals and gemstones.
What is necklace?A necklace might be a straightforward chain made of gold or silver, a string of beads or diamonds, or a pendant suspended from a rope. It qualifies as a necklace as long as it is worn around the neck.
Unless you are a professional or amateur geologist—or perhaps you earned a merit badge studying them as a scout—you probably won't be able to explain the differences between these four hard natural materials: minerals, rocks, gemstones, and crystals.
The different types of necklace are chocker, Matinee and opera. Long and functional, opera length necklaces. The necklace should hang below the bust when worn as a single strand.
Therefore, Necklace is most likely made from both metals and gemstones.
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Which of the following represents a group of protists that is difficult to classify as either protozoan or algae because some species have chloroplasts, but others do not?
Answers
Answer:
some species have chloroplasts
Explanation:
this might seam like a weaird qusten my teacher ask what is sex in the same people
Answers
Answer:Either homosexuailty or Male and Female?
Explanation:
Which of the following represents types of aquatic mammals from most aquatic to least aquatic?
Answers
Answer:
I would say polar beats
Explanation:
As polar bears actually don't have to get in water..
Not sure ok sorry
In general, the more physical activity individuals do,
A the more intense the exercise needs to be
B. the more money they will save on disting
C. the more television they will be able to watch
D. the more benefit they will receive from exercise
vided
Answers
reason is because exercise is healthy! just overdo it and it'll be good for your body.
Which of the following is an example of
an organism's niche?
A. A dog chasing its tail
B. A bird fell out of its nest
C. The little boy is late for school
D. The early bird gets the worm
Answers
Answer:
A. dog chasing its tail
Answer:
D
Explanation:
One who arrives first has the best chance for success,
Do the populations change very much, or are they in equilibrium? Explain.
Answers
Answer:
They are in equilibrium
Explanation:
This is because they compete for resources such as food,water,mates e.t.c. hence only the fittest survive.Also the organisms that die are replaced by newborn ones.An ecosystem can support a specific number of organisms without depleting its resources.
Classify the disturbances that lead to primary or secondary succession. Complete the Venn diagram shown in the question. volcano tsunmai fire landslide hurricane flooding logging
Answers
Answer:
secondary succession happens more often because it occurs after some kind of distribution that still leaves the soil intact (mudslide,bulldozing,shoveling,or scraping off an area)
Explanation:
Answer:
Secondary succession
Explanation:
Succession may be defined as the change in the biological species community with time. Primary succession and secondary succession are two main types of succession.
Secondary succession is the succession that occurs most often in nature because this succession occurs when the climax community is disturbed by the natural and man made disturbances. The secondary succession has almost every thing to start the new succession again in the destroyed land.\
Thus, the correct answer is secondary succession.
Answer:
In the picture provided.
Do you think any animal can do photosynthesis
Answers
Can someone let me know the answer I need this to pass and idk how to do this plzz
Answers
Answer:
Explanation:
1) d
2) a
3) b
4) b
5) c
6) a
7) a
8) d
hope this helps
plz mark it as brainliest!!!!
Prehistoric people used what for knives and arrowheads
Answers
Answer:
spears
Explanation:
What Latin word related to clouds means “rain”
Answers
Answer:
nimbus
Explanation:
he called this cloud, 'Nimbus', the Latin word for rain. the vast majority of precipitation occurs from nimbo-form clouds and therefore these clouds have the greatest vertical height.
The study of which structure was instrumental in the formulation of the modern cell theory? plant cell animal cell cell membrane DNA molecule
Answers
Answer:
Dna molecule
Explanation:
Answer: Plant cell.
Explanation: Robert Hooke first studied cork cells which were a type of plant material.
Cedar waxwings are one species of bird that is adapted to
withstand our cold winters. Bird watchers in Barrie provide
cedar waxwings with seeds at birdfeeders during winter
months. K/
UTI
(a) Would the seeds alter the carrying capacity of the
ecosystem? Explain.
(b) Provide a hypothesis that explains why bird watchers have
noted an increase in the falcon population in recent years.
Answers
Answer:
B)
Explanation:
Hope that helped! :)
The cell cycle describes the processes that take place as a cell Your answer: A.forms new cells. B.absorbs nutrients. C.makes proteins.
Answers
Answer:
Choice A
Explanation: This is because the main purpose of the cell cycle is to create new cells for the organism via mitosis or meiosis.
The cell cycle illustrates the procedures, which occurs as a cell produces new cells.
What is cell cycle?It refers to a series of events, which occurs in a cell as it grows and differentiates.
A cell devotes majority of its time in the phase known as interphase, and during this time it develops, divides its chromosomes, and prepares for the division.
After that the cell leaves interphase, and goes through the process of mitosis, and completes the process of division.
It can be said that the prime task of cell division is to produce novel cells.
Thus, the correct answer is option A, that is, forms new cells.
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Hemophilia is a sex-linked recessive trait in humans. If a father and a son are both hemophiliacs, but the mother is normal, her genotype must be____. (Note: the H's are superscripts.) * XhXh XHXh XHXH XhY
Answers
Answer: XHXh (Note: the H's are superscripts.)
Explanation:
Hemophilia is a sex-linked recessive trait which means that the males having one altered copy of the gene is enough to cause the medical condition( as they have only one X chromosomes and females have two)
In this case the genotype of father and son is such that they are affected by hemophilia.The son has mother's X chromosome and father's Y chromosome.
XhY is the genotype of father and son. As mother would be heterozygous because she is not affected, her genotype will be XHXh.
Which structural organizations are present in all proteins? A- Primary and Secondary B- Secondary and Tertiary C- Tertiary and Quaternary D- Primary and Tertiary
Answers
Answer:
Option A
Explanation:
The primary and Secondary structure are essential and present in all proteins and also include tertiary.
The primary structure is the amino acid sequence of the protein. This is the basic part of the protein.
The secondary structure are local folded structures that form within a polypeptide as a result of a couple of interactions between atoms of the backbone giving rise to the alpha helix and the beta pleated sheets in protein structures.