Answers
Answer:
The placement of sperm within female's reproductive track.
Explanation:
In animals, sexual reproduction requires sperm of male has to be placed in the reproductive track of female where eggs are present. The sperm of male fuse with eggs of female produces zygote which turns into an offspring. The sperm of male and egg of female are haploid in nature means having half number of chromosomes but when they fused together then the zygote which is formed is diploid i.e. double number of chromosomes. The gametes are formed through meiosis not mitosis. Mitosis cell division occur in body cells.
Related Questions
What is the main function of the organs shown
Answers
Answer:
In an organ, different tissues work together to carry out a particular function. These are the main organs, as well as their primary function: The brain controls thoughts, memory and other organs. The heart pumps blood around the body.
Explanation:
Help ASAP
Which statement applies Newton's laws of motion and gravity to explain why the Moon stays in orbit around Earth?
A.
Revolution and rotation keep the Moon in orbit.
B.
Gravity and rotation keep the Moon in orbit.
C
Rotation and inertia keep the Moon in orbit.
D.
Gravity and inertia keep the Moon in orbit.
Answers
Answer:
D
Explanation:
The Moon stays in orbit around the Earth because the Earth's gravity keeps the Moon orbiting us. The gravity makes the Moon accelerate all the time, even it's speed remains constant.
a mass extinctions is
Answers
Answer:
Mass extinction is when biodiversity or species in a living habitat decreases to about three-fourths of its original number or to none. Such an event is identified by a sharp change in the diversity and abundance of multicellular organisms. It occurs when the rate of extinction increases with respect to the rate of speciation. Mass extinctions are usually associated with organisms that are macroscopic rather than microscopic. Examples of mass extinctions are Permian extinction of marine species, and Cretaceous extinction of various species, including dinosaurs.
What is the original biosphere, sometimes referred to as Blosphere 1?
O
a greenhouse on the Mir space station
the planet Earth
a sealed environment in Arizona
the human body
Answers
Answer:
The correct answer is - the planet Earth.
Explanation:
Biosphere 2 is the second self-sufficient biosphere that is a research center of America that is built to study, teach and research the purpose of the earth and its biosphere. It is termed biosphere 2 because the original biosphere is the primary biosphere that self-sufficient which is called biosphere 1.
Biosphere 1 is changed altered so much since it formed in various manners including the hydrosphere, atmosphere and different matter cycles.
Which of the following is NOT a way to conserve and/or protect natural resources?
A throwing away plastic water bottles
B. replanting trees that have been cut down
C. taking shorter showers
D. turning the heat down at bedtime
Answers
Answer:
C) Taking Shorter Showers
Explanation:
Can intersex male get their partners pregant?
Answers
Answer:
yes
Explanation:
they can produce sperm
Based on the graph, how are the trends in greenhouse gases between the years 1500 and 2000 likely to affect the climate on Earth?
Answers
Answer:
The atmosphere would retain more heat, raising global temperatures.
Explanation: got this correct!
Answer: The atmosphere would retain more heat, raising global temperatures.
Explanation:
Got it right on PLATO
Where is the best place to live to avoid the problems caused by
climate change and why?
Answers
outside the us- Denmark because the country has continued to make strides forward, in air quality in particular. On the previous report, 78.8% of the population was exposed to unsafe levels of fine particle air pollution; now, the figure has dropped to 56.9%. Denmark tops the list of countries doing the most to protect the environment, among them having at least half its energy consumption come from renewables by 2030 and to be independent of fossil fuels by 2050.
Pleasee answer quickly I will give you brainly
Answers
Answer:
1.D "The type, states, and the amount of matter in the system"
2.D "Cube #1 to Cube #3"
3.B "Material 2"
4.A "Hot water placed in containers made of different substances"
5.A "the color of matter present."
HAVE A NICE DAY(✿◠‿◠)
PLS HELP!! ASAP DUE TONIGHT!!
The saturated fats of animals differ from the unsaturated ones of plants. Unsaturated fats have
A. higher molecular weights.
B. more metabolic processes that they participate in.
C. nitrogen atoms in their structures.
D. a higher number of double bonds between carbon atoms in their structures.
E. more functional utility in animal species, particularly in marine life forms.
Answers
Answer:
D. a higher number of double bonds between carbon atoms in their structures.
Explanation:
Tectonics plates float on the ?
A.outer core
B.inner core
C.mantle
D.lithosphere
Answers
Answer:
I think mantle
Explanation:
Answer:
Mantle
Explanation:
The rocky surface floats slowly on the mantle.
Brainliest please :)
Paragraph
1
-C
B 6
А A
-D
6
Answers
Answer:
A :-):-):-)
Explanation:
Hope this helps:-)
There are almost 10,000 known bird species on the planet. How did they evolve into so many unique forms?
Answers
Answer:
Natural selection.
Explanation:
Imagine in the beginning there was a single species of bird. Naturally, this bird had to expand to the rest of the world, and was distanced as the continents drifted off. But this bird had to cope with various climates and environments. So the bird would gradually mutate over time. The bird in the jungles of central america would develop different colors and a shaped beak, and would better help it survive. This led to being the new normal for birds of this area. It would evolve to cover all the surviving birds in the region, until it is so drastically changed then it is a new species. There are so many different environments, each with its own challenges to overcome, so so many different bird evolve to survive them.
To start an action potential moving down the axon, what must happen?
Answers
Answer:
Different ions cross the neuron membrane and stimulus causes sodium channels to open I think.
Today, you have learned some basic general information about bacteria that cause infections and bacteria that protect
and benefit us, living inside and on the surface of our bodies. So, here is a question for you to apply the knowledge you
gained today:
Ms. AB was traveling and caught a nasty flu on the plane. But because she had work and school she could not take any
time off to rest during her flu. 2 weeks after she contracted the flu, she no longer had the fever and sore throat, but her
nose was still stuffy, and she was suffering from sinus headaches. She went to her doctor, who diagnosed her with a
sinus infection and prescribed her a course of antibiotics. Ms. ABC took the 7 days of antibiotic therapy, but she is now
back at her doctor's office with a yeast infection and diarrhea. Explain, why Ms. ABC developed the sinus infection. Then
explain why she developed a yeast infection and diarrhea after the course of antibiotics
Answers
Answer:
Antibiotics killed the bacteria that cause infection but they can also kill beneficial bacteria . thus Ms ABC developed a yeast infection and diarrhea after course of antibiotics because antibiotics distrub natural balance of beneficial bacteria in her intestine.
Ms. ABC developed a yeast infection and diarrhea after the course of antibiotics because the exposure to antibiotics may kill beneficial bacteria which prevent other diseases to occurs in the body.
What is an Antibiotic?Antibiotics may be defined as a type of medicine that significantly inhibit the growth of microorganisms especially bacteria inside the body of living organisms. Such type of antimicrobial substance may either kill or inhibit the growth of bacteria.
It is the most prevalent kind of antibacterial agent for conflicting bacterial infections, and antibiotic medications are tremendously utilized in the treatment and prevention of such infections.
With the effect of antibiotics, beneficial bacterial species that are living in the intestine may also be killed. Due to this, Ms. ABC becomes susceptible to other types of infections like yeast and diarrhea.
Therefore, exposure to antibiotics may significantly kill beneficial bacteria which prevent other diseases to occurs in the body.
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The fossil presence of anatomically modern humans in ________ demonstrates that our ancestors were capable of substantial water crossings by 40,000 years ago.
Answers
Answer:
The correct answer is - Africa.
Explanation:
Scientists found the fossils of modern humans called Mota an ancient man who lived around 40000 to 45000 years ago in Ethiopia. It was the first DNA isolated from Africa.
This DNA sample says that the Europeans have 6% of the DNA of this modern human, which suggests that there was substantial migration of people into Africa from Europe and the middle east by water crossings.
In which domain Nd kingdom does it belong in?
Answers
5. Which of the following catastrophic events usually affects only coastal regions?
A. floods
B. hurricanes
Answers
Answer:
both but floods are more often
Explanation:
hope it hels
A gene is a small section of DNA on a chromosome.
Complete the sentences.
A gene codes for a particular sequence of...
This sequence makes a specific....
Answers
What is the purpose of the part of the female reproductive system highlighted
below?
A. Acting as a birth canal
B. Developing a fetus
C. Transporting eggs
D. Storing eggs
Answers
The purpose of the part of the female reproductive system highlighted in the image is transporting eggs. Details about reproductive system can be found below.
What is reproductive system?The reproductive system is the system of organs within an organism which work together for the purpose of reproduction.
The reproductive system of living organisms can either be male or female.
According to this question, the structure represented in the above image is a Fallopian tube, which functions to transport eggs from the ovary to the uterus.
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During DNA replication, if a portion of the original strand is CTGACTT, then the new strand will be
O GACTGAA
TTCAGTC
AGTCTGG
GACUGAA
Answers
Answer:
GACUGAA
Explanation:
it's the opposite letters
Cystic fibrosis is an autosomal recessive disorder where a chloride ion membrane channel protein doesn't function properly. People with cystic fibrosis suffer from chronic lung infections that make breathing very difficult. They also suffer from other issues such as an inability to produce enough digestive enzymes due to problems with pancreas cells. Suppose that Chris and Shannon are both carrier of cystic fibrosis (carriers have the allele but do not exhibit the disorder). What is Chris' genotype for the cystic fibrosis gene
Answers
Answer: Typically, the genotype in those patients consists of at least one very mild mutation uncharacteristic for CF patients. These are predominantly missense or splice variants, belonging to classes IV or V producing variable amounts of functional CFTR protein at the apical membrane.
What happens to a population when its size is equal to the carrying capacity?
a. Its size fluctuates wildly.
b. It increases in size.
c. Its size stays steady.
d. It decreases in size.
Answers
Answer:
C
Explanation:
When a population reachs its carrying capacity it will slow down and become steady due to the population reaching its limit on food, water, etc. and they can only feed so many.
When population size is equal to the carrying capacity then "Its size stays steady".
What is population ?A population means the total number of individuals who cohabit in a certain area.
What is steady-state?A biofilm that exhibits no net growth or degradation over time is usually referred to as a steady-state biofilm.
A population might slow down and stabilize once it reaches it's own carrying capacity since it will no longer be able to consume as much food, water, and other resources.
Therefore, the correct answer will be option (c)
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Which is the correct order of energy change from greatest to least from chemical,physical, and nuclear
Answers
Answer:
physical, chemical, nuclear
Explanation:
Which of the following is accomplished by absolute dating? A. It allows us to measure an object's age in years. B. It allows us to preserve organic material. C. It allows us to identify the elements in an object. D. It allows accurate knowledge of future seismic events.
Answers
Answer:
A. it allows us to measure an object's age in years
Fonseca is taking a test. She has to write about adaptations of fish in the coral reef. What should she write?
A.
that some fish in the coral reef are blind due to the absence of sunlight
B.
that some fish in the coral reef survive on marine detritus
C.
that some fish in the coral reef are colorless to protect against prey
D.
that some fish in the coral reef have flat bodies to perform sharp turns
Answers
Answer:
that some fish in the coral reef have flat bodies to perform sharp turns
why are minerals important for our body? describe the 2 groups of minerals
Answers
Minerals are needed for the proper composition of body fluids, including blood, and for the proper composition of tissues, bone, teeth, muscles and nerves. Minerals also play a significant role in maintaining healthy nerve function, the regulation of muscle tone, and supporting a healthy cardiovascular system. There are two kinds of minerals: macrominerals and trace minerals.
Explanation:
.
To create a knockout mouse, after introducing to ES cells a DNA construct in which a specific gene is mutagenized by the insertion of a drug resistance marker, the cells Multiple Choice that have incorporated the transgene by homologous recombination grow in the presence of the drug and these are injected into a host blastocyst. that lack the transgene grow in the presence of the drug and these are injected into a host blastocyst. that have deleted the transgene grow in the presence of the drug and the nuclei are injected into a host blastocyst. that lack the transgene grow in the presence of the drug and the nuclei are used for nuclear transfer.
Answers
To create a knockout mouse, after introducing to ES cells a DNA construct in which a specific gene is mutagenized by the insertion of a drug resistance marker, the cells, that have incorporated the transgene by homologous recombination grow in the presence of the drug and these are injected into a host blastocyst. The correct option is A.
What is biological marker?A biomarker is an objective measure of what is going on in a cell or organism at any given time. Biomarkers can serve as health-related early warning systems.
To create knockout mice, researchers insert artificial DNA into the chromosomes contained in the nuclei of ES cells using one of two methods.
Both methods are performed in vitro, that is, on cultured cells grown in a laboratory setting.
After introducing a DNA construct into ES cells that mutagenizes a specific gene by inserting a drug resistance marker, the cells that have incorporated the transgene via homologous recombination grow in the presence of the drug and are injected into a host blastocyst.
Thus, the correct option is A.
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1. A _________
tree is used to show evolutionary relationships among organisms.
2. Binomial nomenclature names organism using their
________and________
3. What is the name of a series of questions that are used to identify an organism?
Answers
Answer:
1.ans Phylogenetic Trees
Scientists use a tool called a phylogenetic tree to show the evolutionary pathways and connections among organisms. A phylogenetic tree is a diagram used to reflect evolutionary relationships among organisms or groups of organisms.
2.ans Binomial Nomenclature Rules
The entire two-part name must be written in italics (or underlined when handwritten). The genus name is always written first. The genus name must be capitalized. The specific epithet is never capitalized
3.ans Dichotomous Key
A dichotomous key is a tool created by scientists to help scientists and laypeople identify objects and organisms. Typically, a dichotomous key for identifying a particular type of object consists of a specific series of questions.
in some flowers, red and white color is codominant. Flowers and be red ( RR), white (rr) or pink (Rr) if two pink flowers are crossed! what percentage of the offspring will also be pink ?
Answers
Answer:
50%
Explanation:
If you do a punnet square you get 1 RR: 2 Rr: 1rr