Which of the following is true regarding human gametes? produced by the process of mitosis contain the haploid number of chromosomes o produced in the testes and oviducts are also known as primary spermatocytes and primary oocytes contain 46 chromosomes
Answers
Meiosis (reduced division), in which a germ cell splits into two pieces and produces four gametes, is the process by which gametes are created. Male and female gametes combine during fertilization to create a diploid (i.e., having paired chromosomes) zygote.
Female gametes exclusively have the X chromosome, while male gametes can have either the X or the Y chromosome. Genetic recombination occurs in the diploid zygote, which is created when the male and female gametes are joined during fertilization. Therefore, choice E is the right response.
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Related Questions
which of the following are involved in the elongation step of translation? ribosomes charged trna the amino acid site rna polymerase peptidyl transferase all of the above
Answers
All of the following are involved in the elongation step of translation: ribosomes, charged tRNA, the amino acid site, and peptidyl transferase.
During translation, ribosomes play a crucial role in the elongation step. They are responsible for coordinating the movement of the tRNA molecules and the synthesis of the growing polypeptide chain.
Charged tRNA molecules are another important component in elongation. They carry specific amino acids and match them to the codons on the mRNA strand during translation. These tRNA molecules bind to the ribosome and deliver the corresponding amino acids to the growing polypeptide chain.
The amino acid site, also known as the A site, is a specific location within the ribosome where the charged tRNA molecules bind during the elongation step. This site allows for the accurate pairing of codons and anticodons, ensuring the correct sequence of amino acids in the polypeptide chain.
Peptidyl transferase is an enzyme found within the ribosome that catalyzes the formation of peptide bonds between adjacent amino acids. It facilitates the elongation of the polypeptide chain by linking the amino acids together, ultimately forming the protein.
Therefore, all of the above components are involved in the elongation step of translation. The ribosomes provide the platform for protein synthesis, the charged tRNA molecules bring the correct amino acids, the amino acid site ensures accurate codon-anticodon pairing, and peptidyl transferase helps in the formation of peptide bonds.
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A scientist is investigating a new drug that will cure the common cold. The scientist should give the __________ group an empty pill, rather than the pill with the drug being tested.
1. variable
2. control
3. test
4. experimental
Answers
What do mitochondria do in healthy cells, and ny had defective mitochondria caused
David to lose his vision?
Answers
Muscle weakness, intolerance to exercise, decreased hearing and vision, ataxia, seizures, learning difficulties, heart problems, diabetes, and poor growth are the hallmark signs of mitochondrial myopathy.
What will happen if have a defective mitochondria?Defects in mitochondria, the body's energy producers that may be found inside practically all cells, are the root cause of mitochondrial disorders. mitochondrial myopathies are mitochondrial diseases that create noticeable muscular issues, while mitochondrial encephalomyopathies are mitochondrial disorders that cause noticeable muscular and neurological abnormalities.Several of the syndromes linked to mitochondrial disease include Barth syndrome, Chronic progressive external ophthalmoplegia, Kearns-Sayre syndrome, Leigh syndrome, Mitochondrial DNA depletion syndromes , Mitochondrial encephalomyopathy, Lactic acidosis, and stroke-like episodes, Mitochondrial neurogastrointestinal encephalomyopathy, Myoclonus epilepsy with ragged red fibers, Neuropathy, ataxia, and retinitis pigmentosa , Pearson syndrome.The mtDNA mutation that causes NARP also causes MILS, and the two disorders can coexist in the same family. NARP can cause developmental delay, seizures, and dementia in addition to the primary symptoms for which it is called.To learn more about mitochondria refer :
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Question 4
Which type of muscle is found in your digestive system?
Rectus abdominus
Cardiac muscle
Stomach muscles
Smooth muscle
Answers
if you want to determine the proportion of cells that have been killed by a particular antimicrobial treatment, it would be best to do which type of cell count before and after that treatment?
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Agar plates are the standard solid support material for growing microorganisms.
What is Agar plates?Agar plates are Petri dishes used to cultivate microorganisms that contain a growth media that has been hardened with agar. Antibiotics are one example of the selective chemicals that are occasionally added to affect growth.
96 pinner for use in spot experiments with yeast, fungal, or bacterial cells
Individual microorganisms placed on the plate will develop into distinct colonies, each of which is a clone genetically identical to the distinct ancestor organism (except for the low, unavoidable rate of mutation). As a result, the plate can be used to estimate the number of organisms in a liquid culture or a suitable dilution of that culture using a colony counter, as well as to create genetically pure cultures from a mixed culture of genetically diverse organisms.
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Cell biologists studying the mobility of plasma membrane proteins fused mouse and human cells together, creating a heterokaryon. They then examined the localization of mouse and human proteins over time. Initially the mouse and human proteins were restricted to separate halves of the heterokaryon. Over time the mouse and human proteins mixed, with each protein eventually being present over the entire cell surface, consistent with proteins being able to move within the plane of the membrane. What techniques could have been used to examine the locations of the mouse and human membrane proteins
Answers
Answer: Fluorescence microscopy
Explanation:
A protein is substance that is the essential constituent of living cells because it forms part of its structure. They are also found in plasma membrane, where they assist substances to cross the membrane. Proteins can be:
Integral: permanently attached within the plasma membrane.Transmembrane: it spans the entirety of the cell membrane.Peripheral: are only temporarily associated to the membrane.Some integral proteins can act as cellular receptors. Other proteins are responsible for cell adhesion (binding of a cell to another cell or to a surface). On the outside of the cell membranes, attached to other proteins, are the carbohydrate chains that act as labels identifying the type of cell.
A heterokaryon is a multinucleate cell and in this experiment the scientists fuse a human cell and a mouse cell, each of them will have their own proteins. At first, the human and mouse proteins where found in separated halves of this heterokaryon. But after a while, those proteins where mixed and could no longer be identified.
A fluorescent chemical called a fluorophore is able to be absorb light of specific wavelengths and then emit light of longer wavelengths. The proteins can be modified and marked with different colored fluorophores to detect them, even if they are mixed in the heterokaryon. Then, they can be seen with a Fluorescence microscopy, to identify them through different colors.
Who came up with the theory of continental drift? Was his theory originally accepted by
the scientific community?
Answers
Answer:
scientist Alfred Wegener and no it wasn't accepted .
Explanation:
The main reason that Wegener's hypothesis was not accepted was because he suggested no mechanism for moving the continents. He thought the force of Earth's spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true. Hope it helps :) , please mark as the brainliest answer .
Alleles and Genes
1. Visualizing the Vocab: For the following picture, determine where
you could label the following terms: allele, gene locus, and
chromosome. Be sure to draw arrows (Insert → choose arrow
shape) to specify where you are labeling!
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the work of a pitfall trap
Answers
1 what is an Example on
what is meant by breeding.
Answers
Answer:
the mating and production of offspring by animals.
Explanation:
I hope this helps
What happens to food and air when they enter the body?
Answers
Warm-Up
Sort these resources into renewable and nonrenewable resources.
0
fossil fuels
Renewable Resources
water
wind
geothermal energy
minerals
solar energy
Answers
Answer:
Renewable Resources
water
wind
geothermal energy
solar energy
Nonrenewable resources
minerals
fossil fuels
Hope this helps you
Answer:
Renewable:
Wind
Geothermal energy
Solar energy
Nonrenewable:
Fossil fuels
Minerals
Water
Explanation:
This is correct, I put a picture above to show you all ^^
fitting the very long dna strands from a chromosome into the limited space of the nucleus is achieved by coiling the dna around beads of histones with repeating subunits. these dna-wrapped histones are called:
Answers
Fitting the very long DNA strands from a chromosome into the limited space of the nucleus is achieved by coiling the DNA around beads of histones with repeating subunits. these DNA-wrapped histones are nucleosomes.
A nucleosome is a basic unit of DNA packaging in eukaryotes. It consists of a segment of DNA wound around the histone proteins. This structure is often compared to beads on a string. Nucleosomes form the fundamental repeating units of chromatin, higher-order structures of DNA and proteins that make up chromosomes. The nucleosome core particle, defined as the DNA-histone octamer, is the basic unit of chromatin.
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What is the definition of a tributary?
Answers
Answer:
A tributary is a river or stream flowing into a larger river or lake. It is also a person or state that pays tribute to another state or ruler.
Answer:
1. a river or stream flowing into a larger river or lake.
"the Illinois River, a tributary of the Mississippi"
2. a person or state that pays tribute to another state or ruler.
"tributaries of the Ottoman Empire"
example of bad conductor is
Answers
Bad electric conductor :
Wood
Bad heat conductor:
Rubber
Wood, plastic and stone
Bad heat conductor:
Certain metals and rocks
What are the structures and functions of a chloroplast?
Answers
Answer:
Chloroplast has a structure called chlorophyll which functions by trapping the solar energy and is used for the synthesis of food in all green plants. Produces NADPH and molecular oxygen (O2) by photolysis of water. Produces ATP – Adenosine triphosphate by the process of photosynthesis.
The grana, stroma, inner membrane, and outer membrane make up the chloroplast, a kind of plastid.
What are the chloroplast's structural elements?Oval structures called chloroplasts have an inner and an outer membrane. The distance between the outer and inner membranes, known as the intermembrane gap, is 10–20 nm wide. The inner membrane's gap is filled by the stroma, a viscous liquid found inside chloroplasts.
What purposes do chloroplasts serve?Chloroplasts produce energy to support plant development and crop output through the processes of photosynthesis and oxygen release. As a result, active substances such amino acids, phytohormones, nucleotides, vitamins, lipids, and secondary metabolites are biosynthesized by chloroplasts.
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The usefulness of technology in science .
Answers
technology is the application of science for the betterment of man
Explanation:
therefore what is discovered on science is practiced in an applicable way which is technology
Calculate the population size of a heard of elephants for a year.
There are 18 males and 34 females. Each female gave birth and 28 offspring survived. Predators killed 9 elephants. Fifty acres were added allowing 5 males and 19 females to
immigrate into the study area. This resulted in an increase for females' completion and 10 males emigrated to a new territory.
Calculate the growth rate of this population.
Answers
Answer:
the reproduce by putting the male representative organ in the female reproductive organ
i will give brainliest!!
Answers
Explanation:
the answer is
A》C》D》B
and B is the last because it's already in the process of cell division.
what is the meaning of ecology.... please don,t miss this chance
Answers
Answer:
Ecology is the branch of biology concerning the spatial and temporal patterns of the distribution and abundance of organisms,including the causes and consequences
describe the movement of light through the eye from the exterior of the eye to the brain, using the following. (optic nerve, iris, pupil, sclera, cones, rods, cornea, retina, lens and vitreous humor).
Answers
The movement of light through the eye from the exterior of the eye to the brain involves the following structures:
Cornea: Light enters the eye through the cornea, a clear, curved outer layer that helps to focus the incoming light.
Pupil: The light then passes through the pupil, a hole in the center of the iris that can dilate or constrict to regulate the amount of light entering the eye.
Lens: The light is then refracted by the lens, a transparent structure located behind the pupil that can adjust its shape to focus the incoming light onto the retina.
Retina: The focused light reaches the retina, a layer of specialized cells that line the back of the eye. The retina contains two types of photoreceptor cells: cones and rods. Cones are responsible for color vision and detail, while rods are more sensitive to light and help with vision in dim light conditions.
Optic nerve: The photoreceptor cells in the retina convert the light into electrical signals that are sent to the brain via the optic nerve, a bundle of nerve fibers that connects the eye to the brain.
Vitreous humor: The space between the lens and the retina is filled with a gel-like substance called the vitreous humor, which helps to maintain the shape of the eye and support the retina.
Overall, the movement of light through the eye involves the cornea, pupil, lens, retina, optic nerve, and vitreous humor. The iris controls the amount of light entering the eye, while the sclera is the tough, white outer layer that protects the eye. The cones and rods in the retina are responsible for detecting light and transmitting signals to the brain for visual processing.
the process of making rna from dna is called and it occurs in the
Answers
Answer:
transcription
Explanation:
Answer:
i dk what its called but it occurs in the nucleolus
Explanation:
How stem of a aquatic plants help for them?
Answers
Answer:
Explanation:
to float and that they have lightly packed cells i think
Sheep are raised in significantly smaller numbers in the United States than either cattle or pigs. Sheep farming has changed in recent years. How has it changed?
A.
It has increased since 1980.
B.
It has declined since 1980.
C.
It has increased since 2000.
D.
It has declined since 1960.
Answers
The shortage of the resources along with the maintenance as this sis why the requirement that is getting lesser has impacted the industry. Although it contributes a large amount to the economy.
What is the name of 1st hybrid sheep ?It is the sheep that was named as Dolly and was invented in 2002 by cloning.
The shortage of the large-animal veterinarians taking place in many areas of country is challenge to sheep industry and to the other livestock industries as well . The same conditions led to the short fall in the United states as well.
Today, the domestic sheep count is 1/10 of the size it was in the World War II in the United states . The decrease is a result of the economic and the cultural factors that are coming together And it has left to the wonders. Some of the sheep that are raised for the wool others primarily for food.
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When a population is growing exponentially, you can conclude that:
A. there is no competition for resources within the population.
B. the death rate is higher than the birthrate.
C. there is a very high population density in the ecosystem.
D. the environment is at carrying capacity.
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Answer:
a
Explanation:
if there is no competition, the population can live happily
Identify a disease or disorder and explain how it might be controlled by genetic engineering.
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Answer:
Almost all the insulin produced for diabetics is made through a process involving genetic engineering. Treatments for infertility, hemophilia, blood clotting, and dwarfism also depend heavily on genetic engineering, as does immunotherapy for developing cancer treatments. Did this answer your question?
Explanation:
WICH OF THE FOLLOWING SCIENTIST WORK DID NOT CONTRIBUTE TO THE DISOVERY OF STRUCTRE
Answers
WICH OF THE FOLLOWING SCIENTIST WORK DID NOT CONTRIBUTE TO THE DISOVERY OF STRUCTRE
So, the appropriate response is "Meselson and Stahl."
Who are the five scientists who contributed?
10 most outstanding minds whose backing the Science Laid Foundation for Modern Technology has received
Max Planck (1858–1947), Ernest Rutherford (1871–1937), Guglielmo Marconi (1874–1937), Alan Turing (1815–1852), James Maxwell (1831–1879), Nikola Tesla (1856–1943), Ernest Rutherford (1871–1937), Guglielmo Marconi (1874–1937), and Michael Faraday (1912-1954)
Why were only three of the four important scholars who made significant contributions to our understanding of the structure of DNA awarded the Nobel Prize?
The molecular structure of DNA was discovered by James Watson, Francis Crick, and Maurice Wilkins, who jointly shared the Nobel Prize in Physiology or Medicine in 1962. This discovery helped to solve one of the biggest biological mysteries.
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What is one of the main functions of the large intestines?
break down food chemically
break down food physically
absorb nutrients
absorb water
Answers
Answer:
absorb water and mineral salts.
Explanation:
Answer:
D. absorb water
Select all that are considered characteristics of eukaryotes.
Options:
a. Have a complex cytosketeton
b. Chromosomes are dispersed in the cytoplasm
c. Reproduce sexually with the use of meiosis
d. Most metabolically diverse
e. Contain membrane-bound organelles
f. Contain true nuclei in which chromosomes are compacted as chromatin
g. Larger - typically 10-100 micrometers in diameter
h. Appeared in the fossil record about 2 billion YBP
Answers
Characteristics of eukaryotes include having a complex cytoskeleton, reproducing sexually with the use of meiosis, containing membrane-bound organelles, and having true nuclei in which chromosomes are compacted as chromatin. Eukaryotes are typically larger in size, ranging from 10 to 100 micrometers in diameter. They also appeared in the fossil record approximately 2 billion years ago.
Eukaryotes are defined by several key characteristics. First, they possess a complex cytoskeleton, which provides structural support and facilitates cell movement. Second, eukaryotes reproduce sexually through the process of meiosis, allowing for genetic variation and the formation of gametes. Third, eukaryotic cells contain membrane-bound organelles, such as mitochondria and endoplasmic reticulum, which compartmentalize cellular functions. Fourth, they have true nuclei that house the genetic material in the form of chromosomes, which are compacted as chromatin. Eukaryotes are generally larger in size compared to prokaryotes, with diameters ranging from 10 to 100 micrometers. Lastly, the presence of eukaryotic fossils in the record indicates their existence around 2 billion years ago, marking a significant milestone in the history of life on Earth.
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What type of sustainable development encourages enjoyment and conservation of biodiversity and habitats?
a.
Solar energy
c.
Ecotourism
b.
Organic farming
d.
Wind farming