What is the maximum number of electrons that can be placed in the first shell/energy level?
A. 1
B. 8
C. 2
D. 18
Answers
Answer:
D. 18
Explanation:
Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on.
Related Questions
10 Which of the following are examples of natural selection?
SELECT ALL THAT APPLY
A Domesticated dog breeds
B Giraffes developing longer necks over time
A non-poisonous snake mimics a poisonous snake
D Breeding two racehorses that are fast and strong
E Genetically modified soybean
F Galapagos finches choosing mates with stronger and longer beaks
G Allowing only the cows that produce the most milk to reproduce
H Peppered moths choosing mates with darker colors
Answers
Answer:
B Giraffes developing longer necks over time
A non-poisonous snake mimics a poisonous snake
F Galapagos finches choosing mates with stronger and longer beaks
H Peppered moths choosing mates with darker colors
Explanation:
Hope this helps
The examples of natural selection are as follows:
Giraffes develop longer necks over time.A Non-poisonous snake mimics a poisonous snake.Galapagos finches choose mates with stronger and longer beaks.Peppered moths choose mates with darker colors.Thus, the correct options for this question are B, C, F, and H.
What is Natural selection?Natural selection may be defined as the methodology through which organisms that are better adapted to their environment tend to survive and reproduce more than those less adapted to their environment. The concept of Natural selection was first proposed by Charles Darwin.
According to the question, due to the requirement of long necks in order to get food from longer trees, Giraffe develops longer necks. In order to protect themselves from predators, a non-poisonous snake mimics a poisonous snake.
On Galapagos island, if there were variations in the finches of the bird, they get a variety of food resources in order to get more nutrients and energy for survival and reproduction.
Therefore, the correct options for this question are B, C, F, and H.
To learn more about Natural selection, refer to the link:
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please help me with this
Answers
Answer:
The second option is the correct answer, the one your mouse is on.
It's B⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
If you knew you could pass a genetic disease to your children, would you want to be allowed to use gene therapy to “fix” the gene before the children were born?
Answers
Answer:
It depends on if the gene therapy would do something to the gene that could harm you. If there is no harm to you or the children then It seems logical to do it so the children do not have the disease. Because it is a genetic disease, if you "fix" it there is a higher chance that the children will not pass it on to their kids
Explanation:
Which best describes a gene?
the short arm of a chromosome
tightly coiled strands of DNA
the center of a chromosome
a segment of chromosomal DNA
Answers
Answer:
A gene is a segment of a DNA strand.
Answer: a segment of chromosomal dna
Explanation:
49. A test for starch in variegated leaves shows the importance of
A. sunlight
C. water
B. oxygen
D. chlorophyll
Answers
Answer:
D. Chlorophyll
Explanation:
Chlorophyll is important as it allows the plant to convert carbon dioxide and water into glucose.
Starch is what is needed to make food in plants and while all the other options help in the process of making food, chlorophyll is the green pigment in which plants make their food
Drag each label to the correct location on the table.
Sort the examples into proper mechanisms of reproductive isolation. PLEASE HURRY! THIS IS TIMED AND I WILL MARK BRAINLIEST (OR HOWEVER YOU SPELL IT)!
Answers
Answer:
first one is pre second ones pes third one is pes fouth one is pre
Explanation:
ur welcome
Which does not contribute to
genetic variation?
A. chromosome number
B. crossing
over
C. meiosis
D. random mating
Answers
D Random mating
Cuz everything else leads to the way you are variated
Entre as consequencias decorrentes do aumento da temperatura dos mares e dos oceanos, podem ser citados o derretimento das calotas polares, a diminuição no nível de oxigênio presente neles e a morte de corais. Escolha um desses exemplos e explique a relação entre ele e o aquecimento de mares e de oceanos.
Answers
Answer:
Death of coral reefs occurs due to increasing the temperature of the ocean.
Explanation:
Death of coral reefs occurs due to increasing the temperature of the sea and ocean because warm water killed the algae attached to the surface of coral reefs which causes bleaching of coral reefs. This coral reefs provides habitat as well as food to thousands of animals present in the ocean ecosystem so the destruction of coral reefs causes death or migration of animals from that region.
. When an animal is thirsty, it responds by -
eating food
drinking water
blinking rapidly
sweating excessively
eating food
drinking water
blinking rapidly
O
sweating excessively
Answers
when an animal is thirsty, it responds by drinking water
16. Which genotype represents a recessive trait? *
1 point
ee
Ee
EA
EE
Answers
Answer:
ee
Explanation:
in order for the genotype to represent a recessive trait both alleles ( letters ) have to be lowercase hence the answer is ee
1- Which processes are fast in the carbon cycle?
2- Which processes are slow in the carbon cycle?
HELP PLEASE.
Answers
Answer:
Photosynthesis: the absorption of CO2 from the atmosphere (terrestrial plants) and from oceans (marine plants) to produce organic carbon structures.
Respiration: the release of CO2 into the atmosphere, soil and oceans by animals as they exhale.
What goes in the center of a Lewis Dot Structure?
A. nucleus
B. element name
C. element symbol
Answers
Answer:
Element symbol
Explanation:
The element symbol goes in the center of a lewis dot structure with valence electrons around it.
Answer:
C. element symbol
Explanation:
The element symbol goes in the center of a Lewis Dot Structure.
Nerve cells are called
A. neurocytes
B. neurons
C. prokaryotes
D. white nerve cells
Answers
Answer:
It's B ( nerve cells are called neurons ).
Answer:
B. neurons
Explanation:
Nerve cells are known as neurons. So option (B) is the correct answer.
Pedigree Studies
Part A. Reading a Pedigree
Using Figure 1 answer the following questions.
1) What are the sexes of the oldest and
youngest children?
II
2) What is the relationship between 1-1 and
II-3?
1 2
3
4
Figure 1
3) Who has the trait and who does not?
4) Would you expect this pedigree to be for a trait that is dominant or recessive? Explain
your answer.
Answers
Answer:
you
Explanation: thats tuff bro
Question:What does codominance mean in genetics?
1.Both alleles are dominant and are expressed.
2.Both alleles are recessive and are not expressed.
3.The alleles are neither dominant nor recessive.
4.Each allele is both dominant and recessive.
Answers
Option 1
that can give nice mixtures of colors in flowers, like alleles for white and red are expressed, and mixed to pink seen by the human eye
Codominance mean in genetics is the alleles that are neither dominant nor recessive. So, the correct option is (C).
What is Codominance?Codominance is a type of inheritance in which two alleles of the same gene are expressed differently to produce different types of traits in an individual.
It is a heterozygous condition in which both alleles at a single gene locus are fully expressed in the phenotype. These alleles showing an independent effect are called codominant alleles.
In codominance, neither phenotype is completely dominant nor recessive. For example, the ABO type of blood group.
The gene which control human ABO blood groups has three alleles, not just two:
[tex]I^A[/tex] and [tex]I^B[/tex]are not dominant over one another. These are dominant over [tex]I^O[/tex].
Thus, Codominance mean in genetics is the alleles that are neither dominant nor recessive. So, the correct option is (C).
Learn more about Codominance, here:
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Match the terms to their definition.
the number of individual organisms born into a population in a given year
the movement of individuals out of a population
the number of individual organisms that die in a population in a given year
the movement of individuals into a population
DO NE
Answers
Answer:
the number of individual organisms born into a population in a given year - birthrate
the movement of individuals out of a population- migration
Which of the following best describes how the human nervous system and
the endocrine system work together?
O A. The nervous system signals the endocrine system to release
hormones in response to a stimulus.
O B. The nervous system responds to a stimulus, and the endocrine
system returns the body to a relaxed state.
O C. The endocrine system signals the nervous system to send out
nerve impulses in response to a stimulus.
D. The endocrine system responds to a stimulus, and the nervous
system returns the body to a relaxed state.
Answers
The nervous system usually signals the endocrine system to release hormones in response to a stimulus. The correct option is A.
What is endocrine system?The endocrine system, which is made up of all of the body's different hormones, regulates all physiological processes in the body from gestation through adulthood and to old age.
This regulation also include brain and nervous system development, reproductive system growth and function, metabolism, and blood sugar level.
The endocrine system and the nervous system collaborate to influence many aspects of human behavior, together with growth, reproduction, and metabolism. And the endocrine system is crucial in the regulation of emotions.
In response to a stimulus, the nervous system basically signals the endocrine system to release hormones.
Thus, A is the correct option.
For more details regarding endocrine system, visit:
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What is the main function of the immune system?
A. keeps you healthy
B. regulates your blood flow
C. removes waste (i.e. urine and sweat)
D. allows you to move
Answers
Answer:
A. keeps you healthy
Explanation:
The immune system protects your body from outside "invaders," such as bacteria, viruses, fungi, and toxins.
Answer:
A. keeps you healthy
Explanation:
The main function of the immune system is to keep you healthy. Protecting us is the duty of the immune system.
Which of the following statements is
FALSE?
•Disposal of radioactive waste is easy & poselittle risks to the environment.
•Radioactive waste still emit radioactivity.
•Radioactive materials can cause mutations.
Answers
•Disposal of radioactive waste is easy & poselittle risks to the environment.
Help me guys in science
Answers
B=6
C=5
D=1
E=8
F=7
G=2
H=9
I=3
The layer in a body of water in which temperature drops with increased depth faster than it does in other layers is called the
Answers
Answer:
Thermocline
Explanation:
The thermocline is an intermediate layer between the less dense top surface layer and the cold, dense water below.
Someone please help me
Answers
Answer:
Because the reaction creates glucose and oxygen, the products will be C6H12O6 + O2
Explanation:
In fruit flies, long wings are a dominant trait (L) and short wings are a recessive trait (l). Two fruit flies that are heterozygous for the long wings trait mate. The cross produces 180 offspring. How many of the offspring are expected to have short wings?
Answers
Answer:
45
Explanation:
Both parents are hetero-zygous, so each has alleles Ll.
When Ll crosses with Ll, we have
LL 25%
Ll 50%
ll 25%
So out of 180 offspring, we expect about 25% to have short wings, or
25%*180 = 45
1)What sex chromosome is carried by the egg?
2)What sex chromosome is carried by the sperm?
3)How many XX chromosomes are produced in the cross?
4)How many XY chromosomes are produced in the cross?
5)What is the probability of having a male offspring?
6)What is the probability of having a female offspring?
Answers
Answer:
the female has the x
the male has the x and the y.
2
1
50%male
50%female
Explanation:
8b. Which of these modes of transmission require a bodily opening, either naturally or artificial?
Answers
Answer:
blood borne and sexual
Explanation:
during sexual intercourse fluids are transmitted naturally from one partner to the other when one has a cut on the skin he/she is likely to contract diseases when the cut is exposed to the blood of another personPlease help meeeeeeeeeeeewwwww
Answers
Answer:
ok
Explanation:
yes
Answer:
i dont know
Explanation:
Which pronoun correctly completes this sentence?
Ingrid tells her friends about rugby, and _______ tell her about football.
their
them
they
themselves
Answers
Answer:
Hello,⊕ Which pronoun correctly completes this sentence?Ingrid tells her friends about rugby, and they tell her about football.
;))
Answer:
They
Explanation:
I got it right on my test
oofjnbjnbujbujbjlnboubojbnl;nuoibuoj
Answers
Answer:
5
Explanation:
Answer:
B.) 5
Explanation:
Adenosine Triphosphate (ATP) is...
A. An energy storage molecule that cells use as energy 'currency'
B. A DNA molecule responsible for storing genetic information
Answers
Answer:
A. An energy storage molecule that cells use as energy 'currency'
Explanation:
Adenosine triphosphate (ATP) is the source of energy for use and storage at the cellular level. The structure of ATP is a nucleoside triphosphate, consisting of a nitrogenous base (adenine), a ribose sugar, and three serially bonded phosphate groups.
Answer:
A. An energy storage molecule that cells use as energy 'currency'
Explanation:
Adenosine Triphosphate (ATP) is an energy storage molecule that cells use as energy 'currency'.
pattern of lines that intersect maps
Answers
Answer:
Grid
Explanation:
