Answer:
sperm
Explanation:
Answer:
b. sperm
Explanation: it is what fertilizes the egg (female meiosis cell) to create a zygote.
E2020
What is one way to add oxygen to the atmosphere?
Answer:
Plants use sunlight and carbon dioxide to produce oxygen through the process of photosynthesis.
Explanation:
They are the main creators of the oxygen in the atmosphere.
consider the endosymbiont theory and the fact that chloroplasts contain dna molecules. given that chloroplast DNA has genes,
Answer/Explanation:
The endosymbiotic theory is the idea that eukaryotic cells evolved from the fusion of two prokaryotic cells that formed a symbiotic relationship, with one living inside the other.
An endosymbiont is one organism that lives inside another one.
The existence of mitochondria and chloroplasts, which contain their own DNA and ribosomes, supports this theory. Mitochondria are chloroplasts were once free-living organisms, they were prokaryotes that ended up inside of other cells.
Mitochondria and chloroplasts have genes that are very similar to the genes of prokaryotes. Their membranes look like the prokaryotic cell membrane, and they divide in similar ways.
What do you think humans should do in order to minimize the harmful effects of climate change? Do you think it is likely that we will take the necessary actions you describe? Why or why not?
Answer:
There are actually many things we humans can do to help save our planet.
Explanation:
Avoid the use of electrical appliances
Ride bicycles instead of cars
And above all I would suggest we plant lots and lots of trees that could be a good help because trees consumes the bad gas and release the good gases into our atmosphere which does not burn the ozone layer and climate change won't be a national issue.
Biology help pleaseeeeee
Answer:
The last 2
Explanation:
right?
How is the use of fossil fuels creating an imbalance in the carbon cycle?
Answer:
We are burning more CO2 than plants can take in and make into oxygen.
plz help it is due soon
Answer:
I think it's a) 0.3 km/min
Answer:
all you need to do is divide 20 by 6 and to give you a free pass the answer is 3 :) or 0.3
Explanation:
What is the closest star to the Sun?
Hint: Watch one of the SML videos on "Who wants to be a Millionaire" (Super Mario Logan).
Answer:
already have.
Explanation:
2. Which of the following statements is best supported by the data?
(A) The enzyme demonstrates more activity at pH 6.0 than at pH 5.0.
(B) The enzyme has no activity at pH 6.0.
(C) A pH of 5.0 is the optimum for the activity of the enzyme.
(D) The enzymatic activity is independent of pH.
Answer:
B and D edge.............
help pleaseeeeeeeeeeeeeeeee
Answer:
D
Explanation:
True or false: The offspring of animals who reproduce asexually can be considered identical clones of their parent.
Answer:
I'm not sure but I think it's
Explanation:
FALSE
What the things aid in the movement of the lymph?
Answer: lymphatic vessels
Explanation:
Like veins, the lymphatic vessels, which are known as lymphangions, have one-way valves to prevent any backward flow
describe why a biogeochemical cycle is and how is it useful
Answer:
These cycles are called biogeochemical cycles, because they include a variety of biological, geological, and chemical processes. Many elements cycle through ecosystems, organisms, air, water, and soil. The biogeochemical cycles transport and store these important elements so that they can be used by living organisms.
Explanation:
You are performing an experiment with Primase, using a specific DNA template. In this experiment, you provide NTPs (ATP, UTP, CTP, GTP) which contained only one radioactive phosphate group, in the alpha-phosphate position (the alpha- phosphate is the one attached to the sugar. the other phosphates are beta and gamma). After RNA synthesis occurs, you separate the resultant RNA strand any of the NTPs that have not been incorporated into the RNA, and measure the radioactivity of the newly synthesized RNA.A) In this experiment, would you expect the newly synthesized RNA be radioactive? Explain why.B) If you forgot to add CTP when you did the experiment, would the resulting RNA be radioactive?C) If you did the experiment, with all the NTPs provided, but only the beta phosphate was radioactive for each of the NTPs, would radioactivity be found in the RNA? Explain why.D) If you did the experiment, with all the required NTPs, but only the ATP was radiolabelled Would radioactivity be found in the RNA? Explain why.
Answer:
(a). Yes.
(b). RNA becomes Radioactive.
(c). No.
(d). It depends. If the gamma phosphate and beta phosphate are not labeled, then the RNA will have certain degree of radioactivity.
Explanation:
So, let us do right into the explanation behind the answers to the questions asked.
(a). The answer to this part of the question is "Yes" because in creating or in the formation of the glycosidic bond, all the alpha phosphate group were taken into consideration that is they were all used, thus making the newly synthesized RNA to be radioactive.
(b). The RNA becomes Radioactive is the answer to this part of this question because CTP is needed in the experiment.
(c). The answer to this part (c) of this question is ''No'' because the only thing that takes part in bonding is the alpha phosphate.
(d). It depends. If the gamma phosphate and beta phosphate are not labeled, then the RNA will have certain degree of radioactivity.
When salt is dissolved in water, the water is the
solute
solvent
solution
Answer:
solution
yeyeyeyeyeyeyeyyeeyeyyeyeye
5. Zebras (grass-eaters) are th
6. Lions (zebro-eaters) are
Quartamary consumen
7. Give examples of 2 "higher order" consumersShake racon
8. What two types of consumers are missing from this pyramid?
and
9. On the average, how much energy is lost from each trophic level?
Explain WHY.
10. Why are there so FEW quaternary and tertiary consumer in a food web?
2
What t
I NEED HELP ASAP Sensors on a spider's legs feel the vibrations of a trapped insect and relay the information to the spider's brain through nerve electrical signals. For nerve cells to maintain these electrical potentials, sodium must be removed from the cell and potassium must be moved into the cell. Describe why this process is a form of active transport and what is required for active transport to occur?
Answer:
Please find the explanation below
- Energy (ATP) is needed for active transport to occur
Explanation:
According to this question, sensor's on a spider's legs relay information via nerve electrical signals to the brain when the vibrations of a trapped insect is felt. However, for nerve cells to maintain this electric potential, ACTIVE TRANSPORT must be carried out by removing sodium from the cell and potassium must be moved into the cell.
This is a form of ACTIVE TRANSPORT because pottasium ions are moved into the cell against concentration gradient i.e. from a region where it is in low concentration to where it is in high concentration. This active transport process is usually accompanied by the use of energy in form of ATP.
Does this model represent a compound? Explain your answer.
Answer:
uhm i don't want to rush into answers
Explanation:
can you kindly show me the model
Meiosis produces which type of cells?
O Haploid somatic cells
Diploid somatic cells
Haploid gametes
Diploid gametes
Answer:
Explanation:
Haploid somatic cells
Answer:
Haploid because during meiosis one cell divides twice to for four daughter cells.
Explanation:
I need a media article, about science, that seems like bs. More about sex or anything along those lines? I need to debunk it. But that article has to be based off an actual scientific experiment with a published paper. Does anyone have any articles?
21. What is ATP made from?
a. adenosine + high energy electrons
b. ADP + phosphate
C. AMP + ADP
d. the conversion of guanine to adenosine
6 POINTS! What is the difference between animal and plant cells in a simple sentence?
Animal cells do not have a cell wall, while plants don't. They both have different sizes, shapes, components, energy storages, and the amount of proteins.
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION THANK YOU!!
Many male birds will expend a great deal of energy building nests. Females will mate with the males who build the best nests. This is best described as an example of ____.
a. natural selection
b. sexual selection
c. runaway selection
d. an invasive species
e. disruptive selection
Answer:
The correct answer is option B. sexual selection.
Explanation:
Sexual selection is a special type of natural selection proposed by Charles Darwin. According to this type of natural selection in which a particular sex organism chooses the opposite sex member of the species to mate with on the basis of the preferable traits and compete with the other members of the opposite sex.
Here female birds choose those male birds who build the best nests, it is an example of natural selection.
Which statement best describes the initial process of N-linked glycosylation in the endoplasmic reticulum
Answer:
The oligosaccharide is assembled on the lipid carrier at the membrane of the ER
Explanation:
N-linked glycosylation consists of the attachment of an oligosaccharide (glycan) to a nitrogen atom of the asparagine (Asn) residue in the protein. N-linked glycosylation is a key posttranslational modification (PTM) capable of controlling protein structure and function, this pathway takes place in the plasma membrane in archaea organisms and in the membranes of the endoplasmic reticulum (ER) in eukaryotic organisms. In eukaryotic cells, the N-linked glycosylation conserved pathway consists of two steps. In the first place, the oligosaccharides are assembled on a lipid carrier called dolichyl pyrophosphate localized in the endoplasmic reticulum (ER). The dolichyl-phosphatase is a hydrolase enzyme that acts on phosphoric monoester bonds. Second, the oligosaccharides are modified by specific glycosyltransferases that transfer these molecules to selected Asparagine (Asn) acceptor residues of polypeptide chains that have entered the lumen of the ER. These N-glycans are firstly assembled as a dolichol-linked precursor oligosaccharide at the cytoplasmic face of the ER.
The zika virus was first identified in Uganda in 1947. The virus is transmitted from person to person by a bite from a mosquito. It is commonly carried by the Aedes mosquito which is prevalent throughout Central Africa. The virus has more recently spread to the Americas (South, Central, and now North) and is expected to spread to Europe. There is a concern that the virus may reach epidemic proportions. Zika virus is related to yellow and dengue fever. Common symptoms are low grade fever and a distinctive skin rash and other symptoms include vomiting, headache, and muscle and/or joint pain. Pregnant women should avoid traveling to areas known to have zika virus present because the virus is known to cause microcephaly and developmental difficulties related to the central nervous system. Based on the paragraph above, class discussions, and other VALID (be careful with your selection of e-materials! CDC – Center for Disease Control is a good place to start) sources of information please answer the following questions.
1. State a reason why the virus has spread to the Americas and likely to spread to Europe.
2. Define the term microcephaly.
3. What bones of the fetal skull would be affected by zika? Specifically, what area of the CNS is not fully developed in microcephalic individuals.
Answer:
1. It is a highly contagious disease transmitted from person to person and thereby it is expected that infected persons carried the virus to America
2. Microcephaly is a serious birth defect where a baby’s head is much smaller than expected.
3. Occipital bone. CNS malformations: ventriculomegaly, parenchymal and periventricular calcifications and cortical migration anomalies
Explanation:
The Zika virus (Flaviviridae) causes a contagious disease and it is transmitted by Aedes mosquitoes, which are also the main vectors of the dengue virus. Microcephaly is a condition where the baby’s brain has not developed properly during pregnancy, and it has been shown that this birth defect is associated with the Zika virus. During 2015 in Brazil, the incidence of infants with microcephaly born from mothers that contracted this disease during pregnancy was higher, thereby suggesting an association between both conditions. Baby health problems associated with Zika infection include microcephaly (skull partially collapsed), joints with limited motion, etc.
1) In humans, brown eyes (B) are dominant over blue (b). A brown-eyed man
marries a blue-eyed woman and they have three children, two of whom are
brown-eyed and one of whom is blue-eyed. Draw and complete a Punnett
square to help you answer the questions.
What is the genotype frequency (as a percent) of the children who are BB?
Punnet square drawing
just listen in this question you said that ki boy is the brown eyed boy and girl is a blue eyed women so they had three children one or two of them they were having brown eyes and one of them was having Blue Eyes as shown in this they have three children in which two were having brown eyes and one was having Blue Eyes I don't know the diagram I only explained it but you get it that if you as the probability of brown eyes one for the probabilities 2 by 3
Which statement BEST describes the movement of energy and matter in this system?
A
Matter and energy flow through the system.
B
Matter and energy cycle through the system.
С
Matter cycles and energy flows through the system.
D
Matter flows and energy cycles through the system.
Answer:
B Matter and energy cycle through the system.
Explanation:
what is the scientific name for powdered pepper
Answer:
Capsicum
or
Tracheophyte
Explanation:
The scientific name of powdered pepper is Capsicum annuum . For a pepper plant to grow , it takes approximately 3 to 4 years . These pepper are very useful to us for many purposes . They help in good digestion of food whenever a person is going through ingestion .
Which organelle is responsible for converting light energy into sugar?
I hope it is helpful for you .....
In chickens, FF produces extreme frizzle (very brittle and curly feathers), Ff has mild frizzle and ff has normal feathers. An extreme frizzle hen is mated with a normal
rooster.
Which of the following represents the phenotype ratio for their offspring?
•2 mild frizzle: 2 normal
•2 extreme frizzle: 2 mild frizzle
•100% mild frizzle
•3 extreme frizzle: 1 normal
Answer:
3 extreme on normal
Explanation:
Use a punnett square to put this question into an easy to understand visual tool.