Why is photosynthesis is essential to life on earth
Answer:
Without photosynthesis, the carbon cycle could not occur, life would not survive and plants would die.
Hope this helps!
- Which occurrence is the result of the cell cycle in unicellular organisms?
A. cell repair
B. cell growth
C. cell replacement
D. cell reproduction
Answer:
D
Explanation:
Cell reproduction is the result of the cell cycle in unicellular organisms. The correct option is D.
What is cell reproduction?Cells split to produce multiple cells with similar, if not identical, contents. This process is known as cellular reproduction.
Nuclear division during mitosis produces two somatic cells that are genetically identical to the parent cell and have the same genetic complement.
Asexual reproduction in prokaryotes takes the form of cell division in unicellular organisms.
When an organism splits in half, it creates two totally distinct daughter cells, a process known as binary fission. The daughter cells are identical to the parent cells genetically.
Most of the time, Paramecium reproduces asexually via budding, however in poor circumstances, they produce sexually.
Unicellular organisms have a variety of asexual reproduction strategies, including multiple fission, fragmentation, and budding.
Thus, the correct option is D.
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Albinism in humans can be caused by recessive mutations in different genes that cause a total lack of melanin pigment. A complementation test would be available when two people with albinism mate to produce offspring. If the two people carry mutations in different genes that each cause albinism, what frequency would albinism occur in their children?
Answer:
none (zero frequency)
Explanation:
The complementation test is widely used in genetics for assessing whether two mutations associated with a phenotypic trait represent two different gene variants of the same gene (i.e., two alleles of the same gene) or if they are mutations associated with two different genes. In a recessive trait, the offspring must receive one recessive allele from each parent in order to show the recessive phenotype (in this case, albinism). Moreover, in heterozygous individuals for a trait that exhibits complete dominance, recessive alleles always are masked by dominant alleles. Albinism is a multigenic (polygenic) recessive trait, thereby individuals who carry recessive mutations causing albinism on different genes will have zero probability (none) of having offspring with albinism.
Answer:
albinism frequency ---> 3/4 = 75% = 0.75 of the progeny will be albino.
Explanation:
Available data:
Albinism can be caused by recessive mutations in different genes that cause a total lack of melanin pigment.Two people with albinism mate to produce offspringThe two people carry mutations in different genes that each cause albinismLet us say that genes A and B are involved.
Gene A: AA and Aa individuals will express pigments, while aa individuals will be albinosGene B: BB and Bb individuals express color, while bb are albinos.Cross: two people with albinism that carry the mutation in different genes
Parentals) Aabb x aaBb
Phenotype) Albino both parents
Gametes) Ab, Ab, ab, ab
aB, aB, ab, ab
Punnett square) Ab Ab ab ab
aB AaBb AaBb aaBb aaBb
aB AaBb AaBb aaBb aaBb
ab Aabb Aabb aabb aabb
ab Aabb Aabb aabb aabb
F1) 12/16 will be albino
4/16 will express color
4/16 will be Aabb
4/16 will be aaBb
4/16 will be aabb
12/16 = 3/4 = 75% = 0.75 of the progeny will be albino.
Ladybird is a type of bird.
True
False
Answer: it’s false
Explanation: ladybird is a beetle
Answer:
true answer because lady bird has light bone and flight feadures
3. Some organisms have traits that help
them survive in certain situations,
while others of the same species do
not. These differences happen by
due to genetic variation through
sexual reproduction,
chance
planning
Through sexual reproduction
Answer:
it is chance
Explanation:
i took the test
How are emergency preparedness and response interdependent on each other?
O The population recognizes the need for both processes.
O Public health is constantly concerned with both fields.
O The two processes occur separately from each other.
O The success of one depends on understanding the other.
Answer:
The answer is D) The success of one depends on understanding the other.
Explanation: Did the lesson and got the answer correct.
What temperature does it need to be to sleet?
The temperature to sleet needs to be at 32 F or 0 C.
How .....................................................................................................................
Answer:
how? what do you mean
Explanation:
how what :)gl
Answer:
um how what?
Explanation:
in Ponus sp male cone matured earlier than female cone describ how this species
encures the Success of pollination ?
Answer:
The correct answer is - to produce more pollen grains.
Explanation:
The maturity of the Pinus sp. male cones takes place before the female cones which are due to ensure that there are more pollen grains available. The higher the number of pollen grains is better for surrounding the female cones when it matures.
This helps in pollination to be species-specific rather than pollinate by any other flower. This feature of early maturation result in easy pollination of the Pinus species.
A blue-eyed myopic woman from a marriage with a brown-eyed man with normal vision gave birth to a brown-
eyed myopic girl and a blue-eyed boy with normal vision. The gene for myopia (B) is dominant over the gene for
normal vision (c), and the gene for brown eyes (C) is dominant over the gene for blue eyes (c). What is the
probability of the birth in this family of a brown-eyed child with normal vision?
Выберите один ответ:
a. 50%
O b. 75%
c. 0%
O d. 25%
Answer:
option b 75%
Explanation:
this is the answer I guess
Answer:
The answer is option B 75%
Explanation:
The probability of birth of a brown-eyed child with normal vision is 75%
thank you.
1. The diagram below represents part of Earth's latitude-longitude system
What is the latitude and longitude of point L?*
45°
30°
15° 0°
15° 30° 45°
30°
N
20°
10°
0°
LI
10°
20°
30°
O (A) 5º E 30°N
(B) 5° N 30°E
(C) 5° W 30° S
O (D) 5° S 30°W
Answer:
The answer is option D hopefully this helps
During MEIOSIS, an event called crossing over occurs. Explain what happens during this event.
Answer:
During meiosis, an event known as chromosomal crossing over sometimes occurs as a part of recombination. In this process, a region of one chromosome is exchanged for a region of another chromosome, thereby producing unique chromosomal combinations that further divide into haploid daughter cells.
What is the organisms best suited to their environment will surprise and reproduce?
Answer: Natural selection i think
Explanation:
I have none
Which 2 statements explain how in Earth worms oxygen system helps provide itself with oxygen
Answer:
i think oxygen from the surrounding is,obtained through the plasma membrane of an earth worm by the process called diffusion
pls help me. with the help of diagram describe the structure of stomach
Answer:
The stomach is a muscular organ located on the left side of the upper abdomen. The stomach receives food from the esophagus. As food reaches the end of the esophagus, it enters the stomach through a muscular valve called the lower esophageal sphincter. The stomach secretes acid and enzymes that digest food.
Hope this helps:)
what three phases of the cell cycle are considered interphase
Answer:
The cell cycle has three phases that must occur before mitosis, or cell division, happens. These three phases are collectively known as interphase. They are G1, S, and G2. The G stands for gap and the S stands for synthesis.
Explanation:
The three phases of the cell cycle that are considered interphase include G1, S phase and G2.
The cell cycle can be divided into the interphase and mitotic (M) phases.The interphase can in turn be divided into a Growth G1 phase, synthesis (S) phase and Growth G2 phase.The synthesis of the genetic material (DNA) occurs in the S phase, whereas in G1 and G2 the cell synthesizes all materials required to enter into cell division.In conclusion, the three phases of the cell cycle that are considered interphase include G1, S phase and G2.
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What are the tiny blood vessels that are in contact with the cells of the body? | (5 Points)
Answer:
Capillaries
Explanation:
True or False: During asexual reproduction, the organism that is produced is genetically identical to the parent organism. (If your answer is false, then correct the statement to make it true.)
True
Hope this helps!
Answer:
True.
Explanation:
Asexual reproduction, the simplest and most primitive method of reproduction, involves a single parent and produces a clone , an organism that is genetically identical to the parent.
This sample of air at 35°C and 60% relative humidity holds ____ grams/cubic meter of water vapor. The same sample of air at 40°C can hold a maximum of 50 grams/cubic meter of water vapor. If the air currently holds 30 grams/cubic meter, then its relative humidity is ____%.
Answer:
Since a sample of air at 35 ° C and 60% relative humidity holds 26.25 grams / cubic meter of water vapor. The same sample of air at 40 ° C can hold a maximum of 50 grams / cubic meter of water vapor. If the air currently holds 30 grams / cubic meter, then its relative humidity is 60%.
Explanation:
To solve the following question, the following calculations must be performed:
If 40ºC can have a maximum of 50 grams per cubic meter of water vapor, this would imply a total of 100% humidity. Thus, if 35º had 100% humidity, the amount of grams per cubic meter of water vapor would arise from the following calculation:
40 = 50
35 = X
35 x 50/40 = X
1750/40 = X
43.75 = X
Now, if this implies 100% humidity, to determine 60% humidity the following calculation must be carried out:
100 = 43.75
60 = X
60 x 43.75 / 100 = X
2625/100 = X
26.25 = X
Therefore, if with 100% humidity you have 50 grams per cubic meter of water vapor, with 60% humidity you would have 30 grams of water vapor per cubic meter.
Answer:
24
60
Explanation:
When is S-phase complete?
Answer:
S phase. In S phase, the cell synthesizes a complete copy of the DNA in its nucleus. It also duplicates a microtubule-organizing structure called the centrosome. The centrosomes help separate DNA during M phase.
Answer:
we say that S phase is complete when each chromosome has been duplicated
Explanation:
how many phenotypes can be produced by a pair of co-dominant alleles (BW x BW)
Answer:
4
Explanation:
There is a 25% chance of it being BB, 50% of it being BW, and a 25% chance of being WW.
How are gymnosperm seeds and angiosperm seeds different?
Answer:
angiosperms have seeds that are closed within an ovary, gymnosperms have no flowers or fruits, and have unenclosed seeds on the surface of scales or leaves
What is meant by the term "UV"? In your answer, please explain how it
impacts humans and what it has to do with the atmosphere.
Answer:
The term UV stands for Ultraviolet.
Explanation:
Ultraviolet light is a form of electromagnetic radiation which is shorter than that of visible light, but longer than X-rays. This impacts humans because it can provide harmful effects. For example, UV rays can cause premature aging of the skin and signs of sun damage such as wrinkles and leathery skin. They also cause eye problems. However, our atmosphere blocks a lot of the UV rays from the sun which is amazing because if we were every exposed to it, we would die lol
"Ultraviolet light can't be seen by the human eye but is a part of sunlight. It can be harmful to us if we are exposed to it (sunburn!) but it is mostly absorbed by the atmosphere. The presence of UV light in sunlight can be shown by using fluorescing UV-sensitive beads."
Hope that helps!
Understanding the REDOX tower. Group of answer choices More negative E values mean: [ Choose ] More positive E values mean: [ Choose ] Compounds on the right side of the slash are: the reduced form of the compound Compounds on the left side of the slash are: the oxidized form of the compound Compounds at the top of the tower are more likely to: [ Choose ] Compounds on the bottom of the tower are more likely to:
Answer:
More negative E value means More likely to accept electrons.
More Positive E value means More likely to donate electrons.
Compounds on the right side of the slash are the reduced form of the compound.
Compounds on the left side of the slash are the oxidized form of the compound.
Explanation:
Redox tower is formed by reduction oxidation reaction which transfer of electrons happen between two species. It is a chemical reaction in which oxidation number of ions changes due to gain or loss of electron.
Redox reactions involves loss/gain of electrons.
A redox reaction equation is one in which a chemical specie either donates or accepts electrons. If the value of E is negative, the specie most likely donates electrons while a positive E shows that the specie readily accepts electrons.
The compound on the left side of the slash is oxidized while the one on the right side of the slash is reduced.
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The DNA sequence TTT codes for the amino acid lysine. The DNA sequence TTC
also codes for lysine. What can you conclude from this information?
Answer:
The genetic code is degenerate and therefore mutations may go unnoticed.
Explanation:
Each triplet of nucleotide bases, which is known as a codon, encodes for a specific amino acid during translation. However, a single amino acid may be coded by different codons. It is for that reason that the genetic code is considered to be degenerate. In this case, Lysine amino acid can be encoded by both TTT (UUU in the mRNA) and TTC (UUC) codons, thereby a mutation T>C at the third nucleotide codon position does not affect the resulting protein (i.e., it is a silent mutation).
n the classification of organisms, which is the correct order of ranks?
Investigator Sheer is testifying about DNA evidence she found at the crime scene that matches the suspect on trial. The prosecutor asks Investigator Sheer to explain her conclusion that the DNA samples matched.
What would be a good explanation for her to give to the jury?
That at least 10 different points on the two samples matched
That the DNA profile matches someone with the suspect's hair color and skin tone
That she found one point that matched on the two DNA samples
That the DNA samples showed no clear points in common
Answer:
That at least 10 different points on the two samples matched
Explanation:
I would say this because it seems like the most reliable way to explain her conclusion that the DNA samples match.
Question 4 of 10
If you know the mass and volume of an object, what can you calculate?
A. The object's height
B. The object's density
C. The object's temperature
D. The object's length
Answer:
B
Explanation
m/v
Definition: This organ has many functions, including producing bile and synthesizing carbohydrates and fats.
What is the word?
Whales, sharks, and penguins, all in different classes of animals, have streamlined bodies with fins or flippers for efficient movement in water.
Ceovolution
Convergent Evolution
Divergent Evolution
Answer:
I believe it would be Convergent Evolution
