Answer:
e. a and d are correct
Explanation:
Meiosis produces 4 daughter cells that are haploid. Haploid means they have half of the chromosomes of the parent cell.
The essence of meiosis is that specialized cell division reduces the chromosome number by half and gametes are formed that are haploid.
Therefore option e is the right answer.
What is meiosis?A single cell splits twice during the meiotic process, resulting in four cells with half the original genetic material. These cells are our sex cells—eggs in females and sperm in males—and they are produced by a specific form of germ cell division in sexually reproducing species. Two rounds of division are necessary, and the end product is four cells with just one copy of each chromosome. The goal is to produce gametes, or sperm and eggs, that contain half of the parent cells' genetic makeup. Meiosis is characterized by DNA replication, two rounds of cell division, and the production of four daughter cells, each of which has half as many chromosomes as the parent cell.To learn more about meiosis, refer
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What is the probability of the parents having a daughter?
Answer:
1/ 2
Explanation:
since the parents can have only a son or a daughter
the total number of outcomes = 2
and favorable outcome = 1
probability of an event = no. of favorable Outcomes/ total number of Outcomes.
= 1/ 2
The fish 'Exocoetus' has well developed fins for gliding in the water. What is the name
of these fins that are used to glide over water?
Answer:
Pectoral fins
The kinetics analyses of an enzyme are measured as a function of substrate concentration in the presence and in the absence of 2mM inhibitor
[S] (microM): 3, 5, 10, 30, 90
Velocity (micromol/min) No Inhibitor: 10.4, 14.5, 22.5, 33.8, 40.5
Velocity (micromol/min) With Inhibitor: 4.1, 6.4, 11.3, 22.6, 33.8
Required:
What are the values of Vmax and Km in the absence of inhibitor? In its presence?
Answer:
take the reciprocal of the values as 1/S and 1/V and plot the values on lineweaver-burk plot.
so the re-arranged data is as following
1/S 1/V (no inhibitor) 1/V (with inhibitor)
0.333 0.096 0.244
0.2 0.068 0.156
0.1 0.044 0.088
0.033 0.029 0.044
0.011 0.024 0.029
and the plotted lineweaver-burk plot with the equation of straight line would be....
where, first line represents the velocity of reaction with no inhibitor and second line represent the velocity in presence of inhibitor. X-axis has the substrate concentration as 1/S and y-axis has the velocity as 1/V.
as per the plot, equation of line on the lineweaver-burk plot, Y = mx + c, where c = 1/Vmax and m = Km/Vmax.
so solve for the given equations.
First, equation of line in the absence of inhibitor is Y = 0.23x + 0.021
so Vmax = 1/0.021 = 47.6 micromol/min
and Km/Vmax = 0.23, or Km = 0.23 x 47.6
Km = 10.95
Km do not have a unit, so 10.95 x 10-6 or as per your values round it up to 1 decimal point as 1.1 x 10-5
so value of Vmax = 47.6micromol/min and Km = 1.1 x 10-5 in the absence of inhibitor.
similarly, equation of line in the presence of inhibitor is given as Y = 0.67x + 0.021
so Vmax = 1/0.021 = 47.6 micromol/min
and Km/Vmax = 0.67
or Km = 0.67 x Vmax = 0.67 x 47.6 = 31.89
Km do not have a unit, so 31.89 x 10-6 or 3.1 x 10-5
so value of Vmax = 47.6micromol/min and Km = 3.1 x 10-5 in the absence of inhibitor.
What is the difference between lymph and lymph vessels
Answer:
A thin tube that carries lymph (lymphatic fluid) and white blood cells through the lymphatic system. Also called lymphatic vessel. Anatomy of the lymph system, showing the lymph vessels and lymph organs including lymph nodes, tonsils, thymus, spleen, and bone marrow.
8. Which repair process leads to an abasic site as part of the repair pathway?
a.
base excision repair
C.
recombination
b.
methyl mismatch repair
d.
SOS repair
Answer:
c
Explanation:
During which dates of the cycle does the level of estrogen in the blood increase most rapidly? What happens to the uterus during this time?
Question 5 options:
The greatest rise in estrogen levels happens as the corpus luteum expands. This increase acts on the anterior pituitary to inhibit the release of FSH and trigger the release of GnRH from the hypothalamus. (This leads to an increase in LH levels.) The endometrium begins to thicken.
The greatest rise in estrogen levels happens as the follicle matures. This increase acts on the posterior pituitary to inhibit the release of FSH and trigger the release of GnRH from the hypothalamus. (This leads to an increase in LH levels.) The endometrium begins to fall away.
The greatest rise in estrogen levels happens as the follicle matures. This decreases the acts on the anterior pituitary to increase the release of LH and trigger the release of GnRH from the hypothalamus. (This leads to an increase in FSH levels.) The endometrium begins to thicken.
The greatest rise in estrogen levels happens as the follicle matures. This increase acts on the anterior pituitary to inhibit the release of FSH and trigger the release of GnRH from the hypothalamus. (This leads to an increase in LH levels.) The endometrium begins to thicken.
Answer:
option (D) is your right answer
During which days of the menstrual cycle does the level of FSH increase?
Question 1 options:
FSH increases before the menstrual cycle is finished around day 27.
FSH rarely increases during the menstrual cycle, it stays level unless the follicle has been implanted.
FSH increases during the follicular stage of the ovarian cycle (between day six and day fourteen).
FSH increases during the follicular stage of the ovarian cycle (between day one and day six) and then peaks on the 13th day.
Answer:
option (C) is correct answer
Which location is most vulnerable to primary succession?
O A. A newly paved parking lot
O B. An overgrazed prairie
O C. A well-maintained ranch
O D. A newly formed island
BUBMIT
PREVIOUS
o
A
TO
Answer:
A. A newly paved parking lot
Explanation:
Which factor will decrease photosynthesis?
abundant carbon dioxide
balanced pH
increased light intensity
not enough water
ANSWER :
Not enough water
Which of the following choices is not an example of a giant molecule
Explanation:
A substance containing a large number of atoms which are covalently bonded, is called a giant molecule or a giant covalent lattice. There are four examples of molecules made from non-metals which form giant structures. They are silicon, silicon dioxide and two forms of the element carbon called diamond and graphite polymers are a different kind of large molecule.
Please mark me as brainliest .
how does Fibrocartilage receive it's nutrients?
Answer:
These cells receive nutrients through a double diffusion barrier but rely on anaerobic respiration due to low oxygen concentration.
Osteology 1) For the following fill-in the correct anatomical term: (ex. Inferior, superior, posterior, etc.) a. Your knee is ____________ relative to your navel. b. Your sternum is _____________ relative to your right side.
Answer:
a. inferior
b. medial
Explanation:
There are three planes that are used to divide the human body: 1-transverse plane, which is a horizontal line that divides the body into a superior (above) section and an inferior (below) section; 2-median sagittal plane, which is a vertical line that divides the body into equal left and right portions; and, 3-coronal plane, which divides the body into a ventral (anterior) section and a dorsal (posterior) section. As its name indicates, inferior is the opposite term of 'superior' and refers to a structure that is 'below' something else (for example, the feet are inferior to the head). Moreover, a medial structure refers to a structure that is closer to the midline of the body, and therefore divides the body into equal right and left sections (for example, the nose is medial to the eyes).
answer the questions please
Answer:
you learn about vampires
hahah
"During cytokinesis of an animal cell, a cell plate grows from the center moves outward"
True
False
Answer:
True
Explanation:
Which organisms transform nitrogen to a form that is useful to plants?
Answer:
nitrogen-fixing bacteria is the answer
Explanation:
Nitrogen-fixing bacteria are a type of organisms that transform nitrogen to a form that is useful to plants.
All living things are made of cells discovered throught what
Answer:
A microscope
Explanation:
Because Microscopes magnify small objects. Some microscopes can even be used to observe an object at the cellular level, allowing scientists to see the shape of a cell, its nucleus, mitochondria, and other organelles.
nucleotides are the basic
unit for which macro molocules
The correct answer to question is Nucleic Acids, (DNA) AND (RNA).
hope this helps let me know.
Mitosis and Meiosis lab conclusion
Answer:
Conclusion. To sum up, Mitosis and Meiosis are cell division processes which aids with our daily life. Without the process of meiosis and mitosis, cells would not be able to replicate. Also genetic variation and cell growth would not be possible.
A suspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. To follow this process by monitoring the release of CO214, at which positions in the glucose molecule would the C14 label need to be incorporated
Answer:
carbons 3 and 4
Explanation:
Alcoholic fermentation is an anaerobic (non-oxygen-requiring) pathway capable of converting one mole of glucose (C6H12O6) into two moles of ethanol (C2H5OH) and two moles of carbon dioxide (CO2), producing during this process two moles of ATP. The overall chemical reaction is as follow: C6H12O6 (glucose) >> 2 C2H5OH (ethanol) + 2 CO2. During this process (fermentation), energy is obtained from the glycolysis process by which each glucose molecule is broken down into two pyruvate molecules (2 CH3COCOO−). Pyruvic acid is an organic acid that ionizes to produce a hydrogen ion and a molecule of pyruvate. Subsequently, this pyruvate is then converted into ethanol and CO2, generating NAD+, i.e., the oxidized form of nicotinamide adenine dinucleotide or NAD, which is required for glycolysis (and therefore to produce ATP). Moreover, dismutation refers to the redox reaction by which one compound with an intermediate oxidation state converts into two compounds. In consequence, the CO2 generated during fermentation arises from the dismutation of pyruvic acid. During this process, the major source of CO2 is carbon 3 (C3) and carbon 4 (C4) of the glucose as a result of the dismutation of pyruvate, and thereby these positions in the glucose molecule would the C14 label need to be incorporated.
What contributes to cell membrane fluidity? Proteins and lipids exist as separate but loosely attached molecules that can move around Protein enzymes create the fluidity. The cell is bathed in water. The transport of substances through the membrane makes it fluid.
Answer:
Proteins and lipids exist as separate but loosely attached molecules that can move around
Explanation:
Cell membranes are mainly composed of lipids, proteins, and also carbohydrates. Phospholipids are the most abundant type of lipid and the main constituent of the cell membranes. Membrane proteins are divided into two types according to their interactions with the cell membrane: 1-integral (intrinsic) and peripheral (extrinsic) proteins. These peripheral proteins are loosely attached by ionic bonds or calcium bridges with the phosphate heads of the phospholipids; whereas integral membrane proteins contain side chains that interact with fatty acyl groups of the phospholipids. Cell membrane fluidity indicates how easily lipids (e.g., phospholipids and cholesterol) and proteins (e.g., intrinsic proteins) diffuse laterally in the cell membrane. This fluidity is affected by the amount of cholesterol, temperature, and the ratio of unsaturated to saturated fatty acids. Saturated fatty acids have no double bonds in the hydrocarbon chain, whereas unsaturated fatty acids have at least one double bond (these double bonds increase fluidity). Moreover, higher temperatures increase membrane fluidity, whereas cholesterol molecules function to regulate membrane fluidity: at high temperatures cholesterol molecules stabilize the membrane, whereas at low temperatures intercalate between phospholipids, thereby preventing them from clustering together.
What is the role of DNA polymerase enzymes in replication?
(A) unzipping the double helix by breaking down the hydrogen bonds
(B) adding the free nucleotides to the complementary strand of DNA
(C) splitting the DNA molecule
(D)connecting the fragments on the lagging strand of DNA
Answer:
A
Explanation:
the function of DNA polymerase is to unzip the double helix structure of DNA by breaking down the weak hydrogen bond
Answer:
(B) adding the free nucleotides to the complementary strand of DNA
Explanation:
A DNA polymerase is an enzyme capable of creating new DNA molecules by sequentially adding nucleotides to the three prime (3')-end of a DNA strand. A DNA strand is a polynucleotide chain composed of a linear series of nucleotides, each consisting of a deoxyribose sugar, and phosphate, and a base (i.e., thymine, guanine, cytosine and adenine). Before a cell starts to divide, it needs first to replicate its genetic material by using DNA polymerases that duplicate the cell's DNA during the interphase (S phase). During this process (DNA replication), an enzyme known as helicase unwinds the DNA molecule, which is made up of two antiparallel strands oriented in opposite 3′-5′ directions to each other. Subsequently, each strand is used as a template for its replication through DNA polymerases that can add nucleotides (one at time) to an existing short fragment of RNA, i.e., the primer sequence, which is paired with the template DNA strand.
Products of DNA replication
DNA replication occurs during Interphase. What Image shows the products of replication. If the parent strands are blue and the new strands are red? Click the correct box.
Answer:
The red one.
Explanation:
The red colour strands are the products of replication in which new DNA molecules are formed. The main purpose of replication is to produce extra set of DNA molecules for the new cell so that each cell receives extra molecules of DNA. Due to DNA replication, the cell has two types of DNA i.e. parent strands and new strands. The parent strands are blue in colour whereas the new strands are red in colour.
Which of these actions is likely to prevent the spread of pathogens in the environment?
Washing hands once a week
Coughing out loud
Touching wounds
Washing fruits
Answer:
A or D
Explanation:
Coughing out loud and Touching wounds will spread it, not prevent it, Its most likely D, because only washing your hands once a week is basically useless and will prevent little- to nothing so washing fruits is your best bet I would go with D
Umm.. Hi there! Can someone please help me out with this? (only for those who know the answer)
Bcoz I really need this rn :(
even though it is multiple choice, I still need your explanation for your answers. Thanks!!
DUEEEE AFTERRR LUNCHH! :(:(:(:(
If your answer is NONSENSE it will be deleted as soon as possible!
But if your answer is CORRECT, HELPFUL, HAS AN EXPLANATION, I'll chose your answer as the BRAINLIEST ANSWER!
Answer:
(b)(c)(a)(b)(d)(d)Explanation:
1.
I saw the similarity that there are 7 periods in a periodic table and 7 days in a week.
2.
The periodic table tells us both the symbol and atomic number of the elements.
3.
days as there are 7days in a week.
4.
vertical columns are called groups.
5.
seeing the periodic table we can locate it postion that is group 16 period 2.
CONCLUSION :-
1. all the given points tell the properties of periodic table.
Consider the following research question.
Research Question: Why is yeast used to bake bread?
Which hypothesis is based on this research question?
A. Yeast is a living organism.
B. Some people try to lose weight by cutting bread out of their diet.
C. A comparison of rye bread to wheat bread indicates that rye bread
is more enjoyable to eat.
O D. Yeast added to bread dough produces a gas, and this causes the
dough to rise, making the finished bread look like a sponge.
Answer:
d
Explanation:
Who was Dr. Joseph Bell?
Answer:
Sherlock Holmes
Explanation:
He was the inspiration. Not the actual Holmes.
Answer:
Joseph Bell (2 December 1837 – 4 October 1911) was a Scottish surgeon and lecturer at the medical school of the University of Edinburgh in the 19th century.
Susan went to an oncologist because some cancerous cells had been detected within her breast
tissue. Which of the following is NOT a warning signal for cancer?
Answer:
Cancerous
Explanation:
Cancerous doesn't mean cancer
Hola, necesito ayuda con este ejercicio. Regalo 70 puntos, 5 estrellas y corazón.
Respuesta corta: Produciendo un sentimiento de satisfacción.
Explanation
En el texto se hace referencia a una investigación para analizar la relación entre las redes sociales y el cerebro de los adolescentes. Para ello los investigadores utilizaron imágenes magnéticas del cerebros de los 32 adolescentes estudiados. Una vez terminaron el estudio se dan cuenta que "una estructura del cerebro, llamada núcleo accumbens, se activa más cuantos más likes tuviera una imagen". Además, el autor del texto agrega que "Esto es interesante si se tiene en cuenta que este órgano nervioso es el responsable de que experimentemos momentos de placer intensos al ganar un premio, comer helado, etc". De acuerdo a lo anterior se puede interpretar que las redes sociales influyen en el cerebro de los adolescentes debido a que produce en ellos un sentimiento de satisfacción o reconocimiento a recibir "likes" de otras personas. Además, este sentimiento se puede interpretar como aprobación por parte de las demás personas.
g An Hfr strain is produced when Select one: A. an F episome is transferred to a new cell. B. an F episome leaves the E. coli chromosome. C. an F episome leaves the host chromosome and removes some of the host chromosome. D. an F episome integrates into the E. coli chromosom
Answer:
A. an F episome is transferred to a new cell.
Explanation:
Hfr strains arise from the integration of the plasmid into the bacterial cell in one of several ways such as the recombination of events. Most commonly are formed by the UV-induced integration of E coil F factor. It tries to transfer a copy of the F factors as well the entire chromosome to the recipient bacterium.Meiotic recombination produces new genetic information in sister chromatids.This Happens During prophase I. Order the stages of prophase I chronologically: ____ Diplotene.-The synaptonemal complex dissociates; homologous pairs remain attached (chiasmata).
Answer:
See the answer below
Explanation:
The various stages of propase I of meiosis I in chronological order would be
1. Leptotene
2. Zygotene
3. Pachytene
4. Diplotene
5. Diakinesis
The leptotene stage is characterized by the thickening or condensation of the genetic material in the nucleus such that 'thick thread' structures is formed.
At the zygotene stage, the thickness advances and structures can be seen as chromosomes under the microscope. Homologous chromosomes are seen pairing up (synapsis) through the formation of synaptonemal complex to form tetrads or bivalents.
At pachytene, an exchange of chromosomal segments between synapsed homologous chromosomes occur in a process known as crossing over. The exchange point along the synapsed chromosomes are known as the chiasmata. After the crossing over, homologous chromosomes begin to separate but remains joined at the chiasmata.
At diplotene, the dissolution of the synaptonemal complex occur and homologous chromosomes still held together by the chiasmata begin to repel one another. The chiasmata becomes terminalized.
At Diakinesis, chromosomal condensation is completed and the cell is conditioned to progress to metaphase I of meiosis I.
