Gametes are haploid cells, and each cell carries only one copy of each chromosome. These reproductive cells are produced through a type of cell division called meiosis. ... These cells develop into sperm or ova. The ova mature in the ovaries of females, and the sperm develop in the testes of males.
Answer:
Gametes are produced by Mitosis (not meiosis) and after fertilization a diploid zygote is created. The single zygote cell never grows or divides my mitosis. It can only divide by meiosis to produce haploid cells once more, which then produce the main adult body.
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Please helppp
Answer:
“Hard limits” to population growth are things like food, water, energy, technology, living space, other basic needs and economic factors which limit people’s ability to access these things.
“Soft limits” to population growth are things like education, birth control, the desire for a better life individually and a better global future for humanity, religious celibacy or chastity or abstinence, female empowerment and economic participation, the suffering already caused by overpopulation and the desire to avoid further suffering, malnutrition or non-lethal starvation which reduces sexual libido, pollution and other man made causes of involuntary sterility or low sperm count or low fertility, desire to save the environment, aversion to pain and suffering when understood that population growth causes both.
Countries with better quality of life and access to food and basic needs often have lower birth rates and lower population growth. This shows that soft limits can actually be more effective than hard limits to stop population growth. You have plenty of countries in Africa running into hard limits and having some of the highest fertility and population growth rates at the same time. They also suffer massive problems like war, poverty, disease and low standard of living. This goes to show that running into the hard limits will pretty much let things get as bad as they can get before it stops population growth. The hard limits won’t stop all the suffering caused by overpopulation but will make enough people suffer TO DEATH that the population doesn’t grow. People fear pain, thus the soft limits are more effective when they understand that population growth was responsible for pain or suffering and avoid it.
Discuss the purpose of guard cells and stomata on the leaves of plants.
Counting a few organisms with in a population and multiplying that number
to estimate the total size of a population is an example of *
Mutations to the MGR gene can lead to one of several forms of the genetic muscle and tissue disorder called Gaucher’s Disease. Which of the following treatments would best target the damaged gene?
Radiation
Chemotherapy
Cloning
Gene Therapy
Answer:
Pretty sure its Gene Therapy
Explanation:
Use the information to answer the following question.
The Blacklegged Tick is a parasite of the White-Footed Mouse. The White-Footed Mouse carries the bacteria which cause Lyme Disease. The bacteria are spread to ticks that bite infected mice. If an infected tick then bites a human, the human can be infected with the bacteria and develop Lyme Disease. Scientists have proposed that increased human development has led to an increase in the White-Footed Mouse population which can lead to increased cases of Lyme Disease in humans.
Answering which scientific question would BEST support the scientist’s hypothesis?
A.
Do White-Footed Mice live in forest areas?
B.
Do ticks bite a mouse more than once?
C.
Does development of neighborhoods increase White-Footed Mouse populations?
D.
Does Lyme Disease spread to humans from ticks?
Answer:
im not sure, but I think c
Explanation:
c talks about neighborhoods and the text said increased human population led to an increasing mouse population
Which of the following can wear away the solid rock of a cliff over time? A. Ocean waves but not a small stream B. A small stream but not ocean waves C. Both a small stream and ocean waves D. Neither a small stream nor ocean waves can wear away the solid rock of a cliff.
Answer:
it is B
Explanation:
son las fallas evidencias de la tectónica de placas de nuestro planeta Y por qué
Answer:
you're speaking in the wrong language here
Explanation:
the parts of DNA that provide the code for the protein are the
Answer:
the bases / base sequence!
Explanation:
Hope that helps!
What areas of the hands retained the paint the longest, requiring careful scrubbing to get clean?
Answer:
The areas that retained the paint the longest were the fingertips and in between the fingernails. The palms and back of the hands also retained some leftover paint.
Explanation:
Describe, in three or four steps, how toxins get more concentrated in organisms going up the food chain
Please help me
Explanation:
Small amounts of toxic substances - often pesticides or pollution from human activity - are absorbed by plants.
These plants are eaten by primary consumers in low concentrations.
The toxin cannot be excreted so when the primary consumers are eaten by secondary consumers all the toxin is absorbed by the secondary consumers.
This repeats as secondary consumers are eaten by higher level consumers.
At each trophic level of the food chain, the toxins remain in the tissues of the animals - so the concentration of toxin becomes most concentrated in the body tissues of the animals at the top of the food chain.
In what type of cells does meiosis occur?
A liver cells
B. somatic cells
C. all living cells
D. reproductive cells
Answer: !C
Explanation:
The axon, or thin part of a nerve cell that branches off from the cell body, can be
insulated with: *
Complex proteins
Blood plasma
Skeletal muscle
A fatty myelin sheath
What are synthetic materials?
Answer:
synthetic materials are not naturally occurring. some examples are motor oil, technetium Te, the element on the periodic table, and plastic
The Office of Ecology and Natural Resource Conservation works to _______.
Answer:
c.) develop foreign policy regarding the sustainable use of natural resources
Explanation:
Found on quizl
can someon please help me understand better DNA and chromosomes etc..???
Answer:
An organism has the same chromosomes for its entire life. The chromosomes are located within each cell nucleus. They provide the directions for how the cell is supposed to function and determine some characteristics about how the individual looks. Each chromosome contains a very complex molecule called DNA.
Deoxyribonucleic acid (DNA) is an organic chemical that contains genetic information and instructions for protein synthesis. It is found in most cells of every organism. DNA is a key part of reproduction in which genetic heredity occurs through the passing down of DNA from parent or parents to offspring.
hope I helped!
In winter, flocks of birds made up of different
species of birds can be observed foraging
together. Flocking together allows the birds
to find more food and be more alert to danger.
The birds all need to consume the same scarce
resources, though. What two behaviors do these
mixed flocks display?
A competition and commensalism
B mutualism and competition
C. parasitism and mutualism
D predation and commensalism
Answer:
competition and commensalism
Explanation:
What does resolution mean in biology?
Answer:
the term 'resolution' is used to describe the ability of a microscope to distinguish detail.
Explanation:
mark me brainliest!!
These cnidarians have soft, flower-like bodies, and use their stinging cells to catch prey. Some have a symbiotic relationship with the clown fish.
jellyfish
sea anemone
coral
sea fan
(PLEASE HELP!!)
Answer:
sea anemone
Explanation:
Draw a lake and label the photic, aphotic, littoral, limnetic, and benthic zones
The dominant trait for fur color in a species of fox is orange(O), the recessive trait is gray(o). If a fox has a phenotype of orange fur, what possible genotypes could they have?
Answer:
OO, Oo
Explanation:
Endosymbiotic theory is supported by similarities between chloroplasts and * Cyanobacteria Viruses Yeasts None of the above
Answer:
Endosymbiotic theory is supported by similarities between chloroplasts and * Cyanobacteria.
Explanation:
The endosymbiotic theory proposes that mitochondria and chloroplasts were once free-living bacteria that were phagocytized by another cell but not digested. These bacteria got to adapt to their host, and both cells became interdependent.
Both organelles have many similarities with other free-living bacteria. Chloroplasts probably derivate from cyanobacteria because both cells absorb sunlight, produce ATP, and organic molecules. And mitochondria derivate from rickettsias because they produce ATP in the same way by using the Krebs Cycle and Oxidative Phosphorylation.
From the phagocytosis moment, these two cells became so dependant on each other, they could not survive without the other one.
Chloroplasts and mitochondria share some traits with free-living bacteria, that support the theory.
• Both organelles present their genetic material. This DNI is independent of the cells´ DNA, is bi-catenary and circular, identical to the bacterial DNA, and very different from the one of the eukaryotic cells.
• Both organelles divide by binary fission, not by mitosis, and can synthesize their ribosomes and organelles.
• Both organelles present a double membrane, a characteristic that reinforces the idea of being phagocyted. The internal membrane looks identical to the bacterial membrane, while the external membrane looks like the eukaryotic one.
In fact, in this internal membrane are placed the energy centers, just as it occurs in bacterias membrane.
• Finally, the sizes of the organelles are similar to the size of some procaryotes
The skin excretes (blank) which is made up of water, salts, and chemicals like urea.
The (blank) excrete carbon dioxide and water.
The large intestine produces (blank)
that is then stored in the (blank)
and is excreted through the anus.
Answer:
The answers to the blanks in the question in order is as follows:
- sweat
- lungs
- feaces
- Rectum
Explanation:
This question is describing the excretory organs and their excretory products. Excretion is the process by which waste products of metabolism are removed from the body system.
- As mentioned in the question, the SKIN is an excretory organ that excretes SWEAT which is made up of water, salts, and chemicals like urea.
- Lungs is another organ that excretes carbon dioxide (CO2) and water (H2O) as products of cellular respiration.
- The large intestine also produces FEACES, which is stored in the last part of the large intestine called RECTUM before it is excreted through the anus.
which of the following statements correctly describes organisms in this food web?
Answer:
pls insert or write down the statements.
so that people will be able to answer your question.
Which one of the solutions do you think countries most affected by natural hazards should try? Why?
Please help I will give brainliest!!
Answer:
100 % used of renewable energy.
Explanation:
100 % used of renewable energy by those countries that are affected by natural disasters because renewable energy does not produce any pollution that affect climate. If there is no change occur in the climate, the environment becomes stable and moves towards positive growth of the environment. If there is 0 % pollution is produced in the environment, the environment growth will be increases and equilibrium of environment should be accomplished.
Phototropism is a phenomenon observed in plants. Phototropism is best described as a plant’s response to light. Auxin is a hormone and signaling molecule found in plants that promotes cell elongation. It is observed that auxin concentrations are lower in the parts of the plant that are closest to light. Auxin concentrations are higher in the parts of a plant that are in the shade.
Answer the following in the space provided.
A. Describe phototropism using what you know about signal transduction. Start with auxin as a signaling molecule.
B. Explain how altering the receptor would affect the signaling pathway.
C. Predict how a plant would respond to exposure to light on all sides of a growing stem.
D. Provide reasoning and justification for your prediction.
Answer:
i think the answer is c but im kinda not understanding the question
Explanation:
Scientists recently discovered a species of bacteria that’s capable of photosynthesis, but it’s anaerobic and doesn’t produce or use oxygen for respiration. Which process will be absent in this organism?
A.
Calvin cycle
B.
electron transport system
C.
glycolysis
D.
Krebs cycle
Explanation:
The answer is D. Krebs cycle. the Krebs cycle only occurs when oxygen is present, and so it would seem to be the same for the electron transport system... although, in anaerobic bacteria, it is still used as a respiratory electron transport chain called physolmere.
Answer:
Krebs cycle
Explanation:
True or false The sea otter is considered a keystone species that influences the survival of many other species in an ecosystem .
Answer:
false
Explanation:
answer: True
kind of
Help please I will mark brainlist!!
Answer: i think the answer c
Explanation:
Inhibition of enzyme X by eutricoline prevents dehydration synthesis reactions
from occurring between DNA nucleotides. Describe the effect this has on the
replication process. Explain why eukaryotic cells treated with eutricoline do not
increase in number over time
Answer:trying to pass two huh
;-;
Explanation:
Is it possible for two albino (all white) to produce a non-albino offspring. Explain
Answer:
For most types of OCA, both parents must carry an albinism gene to have a child with albinism. Parents may have normal pigmentation but still carry the gene. When both parents carry the gene, and neither parent has albinism, there is a 25% chance at each pregnancy that the baby will be born with albinism.
