Which two elements have the same number of valence electrons?
barnium neon silicon carbon
Answer:
silicon and carbon have tge same number of valence electrons !
2. Which piece of evidence would best help to explain the appearance of different
mutations affecting wing structure over such a short period of time?
a. Populations of crickets experience a high rate of mutation that produces many
phenotypes
b. Populations of crickets introduce similar mutations to overcome similar
pressures.
C. Wing structure is an acquired trait that is established in every new generation.
d. Individual crickets determine the wing structure to ensure maximum survival.
Answer:
B
Explanation:
because we all have to adapt which means even if crickets have to adapt making themselves bigger or they have to survive a different way from any other Cricket just so they can survive like everybody else in this cruel world
Help plz!!! I'm struggling with a lot of school work and I need help or I won't be graduating this year
Answer:
the answer is c
Explanation:
it is the most logical answer
If cells of a multicellular organism have the same genes, how can there be many different cell
types in a body?
Answer:
Because of cell differentiation
Explanation:
Multicellular organisms are organisms that have many cells in their body system, unlike unicellular organisms that have just one. However, these many cells contained in a multicellular organism are of different types performing different functions.
Although they all have the same set of genes encoding the same proteins in them, they are able to become different and perform different functions via a process called CELL DIFFERENTIATION. Cell differentiation is the process whereby cells of a living organism becomes specific in their functions as they divide. This is a result of the REGULATED EXPRESSION OF GENES. The genes in each cell are not expressed at the same time, hence, they have different functions.
1
2
Define the underlined word as it used in the sentence. I am trying very hard to tap into my inner genius during this project
Answer:
dig deep
Explanation:
Answer:
Dig deep
Explanation:
________ orbit high above Earth collecting data and images of Earth’s surface and atmosphere.
Distinguish functions professional organizations may play in the lives of those with horticultural careers
Answer:
It enhance skills and knowledge.
Explanation:
professional organizations play very important role in the lives of those people with horticultural careers because in professional organizations there is continuous learning opportunities for the horticulturists. These organizations also enhance skills and knowledge and to stay up to date on changes occur in their field so we can say that professional organizations are very important for horticultural careers.
what is the typical flow of energy throughout organisms?
starts with sunlight and photosynthesis if you are talking about plants
What could explain the presence of their fossils in such diverse parts of the world?
Answer:
The fossils are in several areas because the animals were very widely distributed and this is how the evolution of the different species is shown in different parts of the world.
Fossils are skeletal remains of animals impregnated in stone, if these are not found, their chemical composition becomes petroleum and that is how the formation of oil arises.
Explanation:
Another reason was that many animals lived together on two continents, these two continents suffered many ruptures due to the appearance of volcanoes and movements of the tectonic plates and that is how the lands separated and new seas appeared, and the species dispersed throughout the world evolving each one differently according to the environment where it was stimulated.
What is leukemia? Its symptoms
Answer:
leukemia is cancer of body's blood forming tissue, including the bone marrow and lymphatic system.
its symptoms is fever and chills.
hope it helps.
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION I WILL MARK YOU BRAINLIEST THANK YOU
Answer:
C Department of the Interior
Please Rate and mark me as brainliest
helppp meeeeeeee pls!!!!
Answer:the red one
Explanation:
i just took a test on this subject yesterdsy
Which statement best describes what happens when plastic items are changed into something new ?
the plastic has been reused
the plastic has been recycled
the plastic has been repurposed
the plastic has been destroyed
Answer:
the plastic has been recycled.
Explanation:
when it is recycled it is changed into a whole different type of product.
If all fours plants were watered daily but placed in a closet receiving no sunlight what process would NOT occur
Answer: photosynthesis
Explanation:
If all fours plants were watered daily but placed in a closet receiving no sunlight then photosynthesis would not occur.
What is photosynthesis?Photosynthesis is defined as the process through which plants convert carbon dioxide, water, and sunshine into oxygen and sugar for energy.Photosynthesis is primarily used to convert solar energy into chemical energy, which is then stored for use at a later time. The biological systems on the planet largely receive energy from this method.
Without light, plants will lose their color and deteriorate. Due to inadequate photosynthesis, the shoots exposed to "limited/no" sunlight were yellow/white in hue. The sprouts struggled to make enough chlorophyll to give them a green color since photosynthesis was hindered by the lack of sunlight.
Thus, if all fours plants were watered daily but placed in a closet receiving no sunlight then photosynthesis would not occur.
To learn more about photosynthesis, refer to the link below:
https://brainly.com/question/1757345
#SPJ2
What piece contains a low-
power magnifying lens (4x)?
Low-power
Objective
High- power Objective
Stage
Eyepiece
Answer:
Low power objective lens
Explanation:
On a standard microscope with three objectives on the nosepiece, the lowest objective lens is usually 4x magnification.
The high power objective is usually 40x magnification.
Hope this helps!
The piece that contains a low-power magnifying lens (4x) is a low-power objective..
A low power objective is a short-length objective lens, which is often is useful for aligning the microscope.A low power objective can be used to examine and identify large specimens or many smaller specimens. The total magnification obtained from a low-power magnifying lens (4x) when combined with a 10x eyepiece lens is a 40x magnification.In conclusion, the piece that contains a low-power magnifying lens (4x) is a low-power objective.
Learn more in:
https://brainly.com/question/1503351
fregment theory in canada
Explanation:
If u mean "fragment theory," in Canada...
was introduced in 1936 by a Canadian Political Scientist & professor named G. Horowitz. This theory is still debated in the 21st century by colleagues in the same field.
Not sure if he was proven right or wrong...
How did the shift to an agricultural lifestyle spark innovation in Biotechnology?
Answer:
Biotechnology allows farmers to grow more food on less land using farming practices that are environmentally sustainable. Through biotechnology: Seeds yield more per acre, plants naturally resist specific insect pests and diseases, and farming techniques improve soil conservation.
Explanation:
Answer:
Explanation:
New Platform for Innovation in Food and Agriculture Launches, Invites a new platform to spark a thoughtful dialogue around innovation in food “We look forward to engaging a number of voices in Innovator moving forward.” Biotech NOW is BIO's blog chronicling “innovations transforming our world”
Problem #1
Some mice have either a kinked tail or a normal tail. Kinked tails (K) are dominant. Located on
another chromosome is the gene for growth. This gene can either be dominant, causing
normal growth (N). or it can be recessive (n), causing obesity in the mouse. Two mice that are
heterozygous for a kinked tail and heterozygous for normal growth are crossed. What is the
phenotype ratio resulting from this cross?
P
Х
Answer:
9/16 Kinked tail, normal growth
3/16 Kinked tail, obese growth
3/16 normal tail, normal growth
1/16 normal tail, obese growth
Explanation:
Kinked tail (K) is dominant over normal tail (k) and normal growth (N) is dominant over obese growth (n). Two mice that are heterozygous for both traits (KkNn) are crossed:
KkNn x KkNn
offspring:
9/16 K_N_ - Kinked tail, normal growth
3/16 K_nn - Kinked tail, obese growth
3/16 kkN_ - normal tail, normal growth
1/16 kknn - normal tail, obese growth
(See the attached image for the Punnet's square analysis)
When myosin moves along the actin, it goes through cycles of binding and releasing (duty cycle). How does myosin keep from losing its place on the actin when it releases
Answer:
The correct answer is - The myosin is arranged in dimers so that when one releases, the other is bound.
Explanation:
Myosin moves along the actin in the cycle of binding and releasing which is known as the duty cycle of myosin movement. Myosin is found in the arrangement of the dimer.
It remains in its position with the help of this dimer arrangement as one released in the duty cycle while the other bound and then the other bound and it releases.
7. In some chickens, the gene for feather color is controlled by codominance. The allele for black is B and the allele for white is W. The heterozygous phenotype is known as
erminette.
a. What is the genotype for black chickens?
b. What is the genotype for white chickens?
c. What is the genotype for erminette chickens?
d. If two erminette chickens were crossed, what is the probability that:
i. They would have a black chick? %
ii. They would have a white chick? % iä. They would have an erminette chick? %
Answer:
See the answer below
Explanation:
Genotype is the genetic composition of organisms and a gene is made up of two alleles.
a) Since the allele for black is B, the genotype for black chickens would be BB.
b) Since the allele for white is W, the genotype for white chickens would be WW.
c) Since erminette color is heterozygous, the genotype would be BW.
d) Two erminette were crossed:
BW x BW
BB BW BW WW
i. Probability of having black chick (BB) = 1/4
ii. Probability of having a white chick (WW) = 1/4
iii. Probability of having erminette chicken (BW) = 1/2
how
is gravity measured
Answer:
Gravity is measured by acceleration that it gives to freely falling objects . At Earth's surface the acceleration of gravity is about 9.8 meters ( 32 feet) per second per second. Thus, for every second an object is in free fall, its speed increases by about 9.8 meters per second.
Answer:
Explanation: blueyedmtngirl from my understanding from astrophysics,there is no unit to measure gravity but its presence can be known.
blueyedmtngirl if I have not answered you to your satisfaction please comment below.
What did the bacteria say after replicating itself?
Answer:
It probably said one of two things:
1) "I'm not half the cell I used to be."
2) "I'm seeing double."
which of the following is not one of the factors that’s affect how enzymes function
Answer:
.....
Explanation:
,,,,,
Chromosomes from a mother and a father combine during fertilization. What does the offspring of two parents inherit through these chromosomes?
Answer:
Genes
Explanation:
PLEASE HELP TIMED
The host is calculating how many grams of limestone will be washed away by 30 kg of sulfur. He first converted kilograms to grams. Then he multiplied by which of these?
A.
The reciprocal of the molar mass of sulfur
B.
The molar mass of sulfuric acid
C.
The reciprocal of the molar mass of limestone
Answer:
The reciprocal of the molar mass of sulfur
Explanation:
The number of grams = n
Mass of Sulphur, m = 30 kg
Molar mass of Sulphur, M = 32.1 g
The formula used :
n = m / M
Converting m in kg to gram
1000g = 1kg
(1000/kg) ÷ 32
To change the ÷ sign to *, we multiply by the reciprocal of the divisor
The divisor is the molar. Mass of Sulphur
Hence, we have ;
30*(1000g/kg) * (1/32.1)
Which sequence shows increasing complexity of ecological organizations
Answer:
Qué secuencia muestra la creciente complejidad de las organizaciones ecológicas?
Explanation:
How can epigenetic changes alter the amount proteins that are made by a cell?
A child is born to parents that both have hypophosphatemic rickets, a disease that is caused by a sex-linked dominant trait. What is the chance that the child will have the disease if the mother is heterozygous for the trait?
75%
50%
25%
100%
Answer:
75%
Explanation:
Hypophosphatemic rickets is a disorder characterized by hypophosphatemia (low level of phosphate in the blood), defective intestinal absorption of calcium, and rickets (impaired mineralization of cartilaginous growth plates) or osteomalacia (impaired mineralization of the osteoid) unresponsive to vitamin D. It can be inherited or acquired.
When it comes to inheritable hypophosphatemic rickets, the disorder is most often inherited in an X-linked dominant manner. This means that the gene is inherited through the X chromosome and that one dominant allele is enough to cause it.
As the mother is heterozygous for the trait, she has one dominant and one recessive allele (XHXh). The father has one X chromosome, which he inherited from his mother, and as he has the condition, the dominant allele will be present on it (XHY).
This means that, if the child is a girl, she will definitely have the disorder. Girls inherit one X chromosome from each of their parents. Even if she inherited the one with the recessive allele from her mother, she would get the one with the dominant allele from her father.
If the child is a boy, he has a 50% chance to inherit the condition. Boys inherit the Y chromosome from their father and the X chromosome from their mother. As the mother is heterozygous, he can either get the chromosome without the dominant allele or the one with it. This means that there is a 50% chance of inheriting the disorder.
If we say that there are equal chances of this couple having female and male children, when we combine these results, we get a 75% chance of them inheriting hypophosphatemic rickets.
1. Drowning, suffocation and carbon monoxide poisoning can lead to death because they all prevent
oxygen from reaching our cells. Explain how this lack of oxygen can lead to death; be specific about how
this lack of oxygen can affect cellular metabolic processes.
Answer: Lack of energy
Explanation:
Oxygen is needed in a process known as Respiration where it is used to produce energy from glucose. This energy is what the cell uses to continue whatever functions that it carries out which are needed for the body to survive. If the cells don't get oxygen, they can't make energy and if they can't make energy, they die.
Some cells are more important than others and so will need a constant supply of oxygen. The brain for instance requires 20% of the oxygen used in the body. If the body suffers from a lack of oxygen for whatever reason, brain cells begin to die within about 4 minutes.
The brain is extremely important as it directs the body. If the cells there begin to die, the body deteriorates and the body stops engaging in certain processes due to a lack of direction from the brain. This coupled with the other cells dying around the body will lead to even more deterioration till the body dies.
There are giraffes that show an incomplete dominance in neck size. A giraffe with a tall
neck (TT) is crossed with a giraffe with a medium neck (TS). What fraction of giraffes will
also be tall?
25%
O 75%
O 50%
100%
Answer:
50%
Explanation:
(TT) Is fully tall. (TS) Is medium. So it can be assumed that (SS) is short. When forming a cross, you cross TT and TS to generate a phenotypic ratio of 1x1 or a genotypic ratio of 1 TT, 1 TS. Making it exactly split in half in 50/100.
Hope this helps!
