Answer:a
Explanation:because
PLEASE HELP FAST
Hemophilia is a sex- linked characteristic. If a male with hemophilia marries a female who is a carrier for hemophilia, what are the chances of producing males with hemophilia?
a) 0%
b) 25%
c) 50%
d) 75%
e) 100%
I initially had put b, but it was marked wrong.
Answer:
c. 50%
Explanation:
i just searched the answer up lol
Answer:
C
Explanation:
What invention caused scientists to stop using the five kingdom classification system?
1. Why does DNA replicate?
2. Is DNA replication describe as conservative or semi-conservative? Why?
3. What 2 enzymes are used during DNA replication? Describe what each does during replication.
4. When does DNA replication occur in a cell?
5. Where does DNA replication occur in a cell?
Answer:
1. To ensure continuity and preservation of genetic material
2. Semi-conservative
3. DNA Polymerase: unzips the DNA strand
Helicase: unwinds dna strands
4. During the S stage of interphase
5. Nucleus
Explanation:
What characteristic of living things helps them to adapt to a changingenvironment?
Which type of mutation often has the least effect on organisms' traits (and may have no effect at all)? Nondisjunction Substitution Insertion Deletion
Answer:
The correct answer is - substitution.
Explanation:
Substitution mutations are the point mutations that are the mutations that least likely affect the trait of an organism or have no effect at all. Substitution mutations take place when there is only one nucleotide base is substituted by another nucleotide base in the DNA or RNA of an organism's genome.
In this case, there is no effect found on the protein formed by these DNA sequences. These substitution mutations generally found in somatic cells and have little to no effect at all.
Explain what a mutation on the DNA is?
Answer:A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
Explanation:
6. The complex is formed when the DNA double helix coils around the proteins A. nucleosome; histone B. chromosome; ribosome C. histone; ribosome D. chromosome; nucleosome
Answer:
B
Explanation:
HELPPPPP
Calcium-41 has a half-life of 80,000 years. At the end of 240,000 years,
how much Calcium-41 would remain in a sample initially containing 60
micrograms? *
A 7.5 micrograms
B 60 micrograms
C 15 micrograms
D 30 micrograms
If the half-life is 80,000 years, then 240,000 years would be equivalent to three half-lives. In other words, the initial amount of the radioactive calcium-41 would have been reduced in half three times over. Mathematically, this can expressed as
calcium-41 remaining = initial mass of calcium-41 × (0.5)³.
Since we are given the initial mass of calcium-41, the amount of calcium-41 remaining after 240,000 years would be:
60 μg × (0.5)³ = 7.5 μg, or 7.5 micrograms.
Compare the symmetry of animals with tissues and without tissues.
HELP PLEASE
Answer:
Only members of the phylum Porifera (sponges) have no body plan symmetry. There are some fish species, such as flounder, that lack symmetry as adults.
Porifera is animals without tissues. These animals are asymmetrical.
A bacterial cell that makes a protein normally found in spider venom because it has a spider gene would be an example of which of the following? (Pick two answers)
Answer:
c & d
Explanation:
I just took the quiz and I got D correct. I'm not sure about C but the rest of the options don't make sense, so it's probably C.
A bacterial cell which is producing spider venom protein is an example of genetically modified organism and a transgenic organism. Thus, the correct options are C and D.
What are Transgenic organisms?
Transgenic organism refers to those organisms or cells whose genome has been modified or altered by the introduction of one or more foreign DNA sequences which are beneficial from another species through artificial means. Transgenic organisms are generated in the laboratory for research purposes.
A bacterial cell which is making a protein that is normally found in spider venom is an example of genetically modified or transgenic organism as in these organisms the genome of the organism is modified or altered as per the requirements.
Therefore, the correct options are C and D.
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Need somebody to help!!!!
Answer:
I would say the first option
Explanation:
Answer:
D
Explanation:
It is being turned into RNa and will go out of the nucleas to be read.
An example of an organism is
the human heart
the petals of a rose
a colony of ants
an oak tree
It's obviously not A.
Answer:
an oak tree
Explanation:
All the other options are either parts of an organism ( rose petal and human heart) or, multiple organisms ( a colony of ants) but, an oak tree is one single living organism.
HELP ASAP
which of the following protists possesses colia
Answer:
option b
Explanation:
paramecium posseses cilia
A student is making a table to show the ways in which cell structures help to maintain homeostasis. Which cell structure
should the student use to BEST complete the table?
Answer:
Its A. Cell Membrane
Explanation:
The cell membrane controls what goes in and out of a cell.
Cell membrane in the cell helps in maintaining homeostasis. It is the maintenance of a constant internal environment. Thus, the correct option is A.
What is Homeostasis?
Homeostasis is the maintenance of optimal conditions for the enzyme action throughout the body, as well as for the cell functions. Homeostasis refers to the maintenance of a constant internal environment despite all the changes in the internal and external conditions of a cell. In the human body, homeostasis includes the control of blood glucose concentration.
The main organelle which is responsible for maintaining homeostasis is the cell membrane. The cell membrane plays an important role in the maintenance of homeostasis through the regulation of the passage of materials into and out of the cell.
Therefore, the correct option is A.
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What is the correct order of the events below:
1. Organism breaks down sugar to release energy in its chemical bonds.
2. Energy from the sun reaches Earth
3. Radiant energy is converted into chemical energy
Answer:
2,3and 1
is correct order for this question
hope it helps
in what THREE (3) ways can pathogens or disease enter the human body?
Answer:
nose,mouth,and eyes are 3 ways pathogens can enter the body
How are producers and consumers related?
Both producers and consumers are plants.
Both producers and consumers can be animals.
Both producers and consumers make their own food.
Both producers and consumers use energy that started from the sun.
Producers and consumers are related as both producers and consumers use energy that started from the sun.
What do you mean by Producers?Producers may be defined as the organisms which use the energy of the sunlight directly to synthesize their own food. They are always found at the root of each ecosystem.
Producers are plants while consumers are animals. Only producers can make their own food, while consumers can get their food by feeding on plants.
Producers directly use the energy from the sun, while consumers derived the energy from eating producers.
Therefore, producers and consumers are related as both producers and consumers use energy that started from the sun.
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Answer:
the answer is c hope this helps
Explanation:
PLEASE HELP! 60 POINTS!
Question 1:
Which term is the name for the stages a species goes through including birth, reproduction, and death?
lifespan
life cycle
longevity
metamorphosis
Question 2:
______________ is a difference in the same trait.
Adaptation
Selection
Evolution
Variation
Question 3:
Organisms that are better able to survive are more likely to _______ and pass on their traits.
respond to stimuli
reproduce
grow
maintain homeostasis
Answer:
Question 1: life cycle
Question 2: adaptation.
Question 3: reproduce
Explanation:
I'm pretty sure that these are correct I hoped this helped!
A normal, non-dividing cell that is performing everyday functions is in what 1 point
phase?
Interphase
Prophase
Mitosis
Cytokinesis
Answer:
Interphase
Explanation:
During interphase the cell is growing and preparing for mitosis. It will only divide in the mitotic phase which includes: prophase, metphase, telophase, anaphase, and cytokinesis.
In body cells,chromosomes are found in________.
if a blue light shines on a green dress what colour would the dress be?
answer: if you shine a blue light on a green dress the blue would be reflected
Charles has developed a new advertisement that can be used online. He tests how well it draws people's attention by closely
monitoring the eye movement of 1,000 test subjects as the new ad appears on their computer screens!
Charles finds that 97% of the test subjects' eyes were drawn toward the ad when it appeared. By comparison, only 50% of the test
subjects' eyes were drawn toward a box of plain text when it appeared instead. He concludes that the new ads are better at
attracting people's attention than old ads.
What is wrong with Charles' experiment?
Answer:
He did not compare the new ads to old ads.
Explanation:
What two factors determine the climate of a region?
Answer:
Climate is determined by the temperature and precipitation characteristics of a region over time. The temperature characteristics of a region are influenced by natural factors such as latitude, elevation and the presence of ocean currents.
Temperature and precipitation are two factors that determine the climate of a region.
What factors determine climate?Climate is determined by the temperature and precipitation characteristics of a particular region, by this condition over time. The temperature factor of a region is influenced by natural factors such as latitude, elevation, and the presence of ocean currents.
As temperature changes, it affects the climate of that region making the area dry or cold, and precipitation affects the climate through seasonal variation, This variation is observed in the different regions on Earth, temperature is higher in some regions and lower in other regions.
Precipitation changes according to the area and ocean and temperature conditions on the earth.
Therefore, temperature and precipitation are major factors.
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How many scientists contributed to the creation of the microscope. What were each of their contributions?
Answer:
11 Scientists
Explanation:
1. Hans and Zacharias Janssen (1590): They created the first compound microscope with more than one lens.
2. Robert Hooke (1667): He details the discoveries he made with the microscope in his book, 'Micrographia'.
3. Anton van Leeuwenhoek (1675): He discovered bacteria with the help of the microscope.
4. Joseph Jackson Lister (1830): He discovered that to get a clearer magnification, weak lenses ought to be used at different distances.
5. Ernst Abbe (1878): Formulated a mathematical theory that showed the relationship between resolution and the wavelength of light.
6. Richard Zsigmondy (1903): Discovered the ultra microscope that enabled the examination of specimen beyond light's wavelength.
7. Frit's Xernike (1932): invented the phase-contrast microscope.
8. Ernst Ruska (1938): He invented the electron microscope.
9. Gerd Binnig and Heinrich Rohrer(1981): Both discovered the scanning tunnel microscope.
Answer:
1. Hans and Zacharias Janssen (1590): They created the first compound microscope with more than one lens.
2. Robert Hooke (1667): He details the discoveries he made with the microscope in his book, 'Micrographia'.
3. Anton van Leeuwenhoek (1675): He discovered bacteria with the help of the microscope.
4. Joseph Jackson Lister (1830): He discovered that to get a clearer magnification, weak lenses ought to be used at different distances.
5. Ernst Abbe (1878): Formulated a mathematical theory that showed the relationship between resolution and the wavelength of light.
6. Richard Zsigmondy (1903): Discovered the ultra microscope that enabled the examination of specimen beyond light's wavelength.
7. Frit's Xernike (1932): invented the phase-contrast microscope.
8. Ernst Ruska (1938): He invented the electron microscope.
9. Gerd Binnig and Heinrich Rohrer(1981): Both discovered the scanning tunnel microscope.
Explanation:
Arrange the terms from smallest to largest:
Cell, Chromosome, DNA, Genes, Nucleus, Base Pairs
How the type convex and the shape long/short of the lens in the eye help in seeing object?
Answer:
convex lens converges the reflected ray and makes an inverted image on the retina . ciliary muscles helps the cover lens to adjust. thus, the photo receptors on the retina convert the image to electrical impulses and it is send to the brain by optic nerves
Explanation:
mark me brainliest please
Explain what
energy is
needed to
create
complex
sugars and
where did
the energy
come from?
All the energy we need for life comes from the foods we eat and the fluids we drink. These nutrients are broadly broken into fats, proteins, and carbohydrates. Carbohydrates play an especially important role as they provide the quick energy needed for exercise. Carbohydrates found in foods like grains, fruits, vegetables, beans, and dairy products are your body's favorite source of energy, but this is not the only role that carbs play. They also ensure mental sharpness and aid in the metabolism of fat for energy. Complex carbohydrates are an efficient source of energy that fuels muscle contractions. Once eaten, carbs are broken down into smaller sugars (glucose, fructose, and galactose) to be used as energy for immediate tasks. Any unused glucose will be converted into glycogen and stored in the muscles and liver for future use. Glycogen is the energy source most often used for short, intense bouts of exercise such as sprinting or weightlifting. Because glycogen is stored in muscles, it is immediately accessible. During bursts of activity, the stored glycogen will be converted back to glucose and burned for fuel. This is the typical energy source for the first few minutes of any sport.
Which body system is responsible for producing offspring
Answer:
The Reproductive System
Explanation:
In living things, the reproductive system is responsible for producing children. It is a group of hormones, tissues and organs that cooperate to promote the conception and development of new ones.
Men have a variety of reproductive organs, including the testes, epididymis, vas deferens, prostate, etc. Sperm production and distribution are facilitated by these structures. In women, the reproductive system includes the uterus, fallopian tubes, cervix, and vagina, among other structures.
These organs play an important role in the development of the egg during pregnancy, fertilization, implantation of the fertilized egg, and the growth and development of the fetus. Additionally, the reproductive system contains hormones that control reproduction, such as testosterone in males and estrogen and progesterone in females.
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If an organism's gametes contain 25 chromosomes, how many chromosomes will their somatic (body cells) contain?
Answer:
Somatic cells are diploid, meaning that they contain two sets of chromosomes, one inherited from each parent
Explanation:
At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes. At the end of meiosis II, each cell (i.e., gamete) would have half the original number of chromosomes, that is, 15 chromosomes. 2Would you want to have your DNA sequenced and find out about your genetic health? What if the test only told you whether or not you might be likely to develop certain medical conditions? Explain the pros and cons of knowing this information.