Answer:
Nº of protons = Atomic number → 7Nº of neutrons = Massic number - Atomic number → 14 - 6 = 7Explanation:
Probably, you will find it useful to know how to deduct this information for any other isotope.
To interpreter the representation of an isotope, you need to know that the symbol representing the isotopes is the same as the chemical element. The representation also includes a superior number that indicates the massic number, and an inferior number that indicates the atomic number.
Isotope representation ⇒ ⁰ X ₙ
Where
X is the element o is the massic number, which is defined as the sum of the number of protons and the number of neutrons. n is the atomic number, which is the number of protons.(Note: You can also find the O symbol as m symbol. Both represent the same massic number)
When protons, neutrons, and electrons get together to form an atom, they lose part of their mass as energy. This is why the atomic weight is slightly inferior to the sum of masses.
In the periodic table, there is only one value of atomic mass, which belongs to the media mass of isotopes pondered by their abundance in nature.
So, what you need to know is that
Nº of protons = Atomic number → nNº of neutrons = Massic number - Atomic number → o - n (or m - n)Nº of Electrons = Nº of protons = Atomic number → nCarbon-14 forms in the atmosphere, it is radioactive and unstable. When they emit an electron and an antineutrino, they become Nitrogen-14.
Isotope representation ⇒ ¹⁴ C ₆
Massic number = 14Atomic number = 6So, from this information we can assume that
Nº of protons = Atomic number → 6Nº of neutrons = Massic number - Atomic number → 14 - 6 = 8 Nº of Electrons = Nº of protons = Atomic number → 6So, from this information we can assume that
Massic number = 14Atomic number = 6The same reasoning can be used to determine the number of protons and neutrons of nitrogen-14.
Isotope representation ⇒ ¹⁴ N ₇
Massic number = 14Atomic number = 7So, from this information, we can assume that
Nº of protons = Atomic number → 7Nº of neutrons = Massic number - Atomic number → 14 - 6 = 7 Nº of Electrons = Nº of protons = Atomic number → 7
Janine’s hands are larger than her father’s hands. Which explanation can account for the difference in hand size between father and daughter?
Janine’s large hands may be the result of a genetic mutation.
B
Janine inherited her mother’s hand size.
C
The difference in hand size may be due to an environmental cause.
D
Though some of the above are more likely than others, all of the above are possible explanations.
Answer:
I think it is either D or A
Explanation:
How long is a lunar cycle?
Answer:
29.5 daysThe Moon has phases because it orbits Earth, which causes the portion we see illuminated to change. The Moon takes 27.3 days to orbit Earth, but the lunar phase cycle (from new Moon to new Moon) is 29.5days(~￣³￣)~keep on learning.I know its helpAnswer: Hewo, there! your Answer is Below
29.5 Or 30 Days
Explanation:
all lunar calendar months approximate the mean length of the synodic month, the average period the Moon takes to cycle through its phases (new, first quarter, full, last quarter) and back again: 29–30 days.
Hope this helps you
Have a great day!!
The atmosphere protects living things from harmful rays that come
from
water
soil
the Sun
heat
Answer:
the sun
Explanation:
it produces harmfull UV Rays
Which is the best type of scientific investigation for Bena to use to study this?
PLEASE HELP TO SOLVE IT I HAVE AN EXAM !!!
An organism has 2 chromosomes in its cells (the diploid number is 2). Calculate the number of chromosomes in a cell in the 5th generation if egg and sperm cells were diploid
Answer:
64
Explanation:
Since the cell has two chromosomes and a diploid number of 2, in each generation, the cell doubles. In the first generation, we have two cells, in the second generation, we have 2 × 2 cells ,in the third generation, we have 2 × 2 × 2 cells. It follows that we have 2ⁿ cells in each generation where n represents the generation.
So, in the fifth generation, n = 5, so the number of cells is 2⁵ = 32.
Since we have 2 chromosomes in each cell, the number of chromosomes in the 32 cells in the 5th generation is 2 × 32 = 64 chromosomes.
PLEASE HELP I HAVE AN EXAM !!!
What are the three things that trigger production and secretion of a hormone from an endocrine gland?
Answer:
There are three mechanisms by which endocrine glands are stimulated to synthesize and release hormones: humoral stimuli, hormonal stimuli, and neural stimuli.
What do the junctions of a cladogram represent?
Answer:
Answer
A cladogram is a visual chart orrepresentation of cladistics. They consist of horizontal or vertical lines connecting various organisms. These different lines branch off from a common point on the cladogram. These branch points represent a common ancestor shared by the organisms that emanate from the branch point.
The junctions of a cladogram represent the branching points in evolutionary relationships between different groups of organisms, and the cladogram is a type of evolutionary tree.
What is the significance of the junction in the cladogram?The junctions in a cladogram can also be used to infer the evolutionary relationships between different groups of organisms based on the pattern of shared derived characters, and the branching points in a cladogram represent the divergence of lineages. The presence of a derived character in multiple groups at a junction in a cladogram indicates that the character was present in the ancestral group, and this is widely used in evolutionary biology.
Hence, the junctions of a cladogram represent the branching points in evolutionary relationships between different groups of organisms, and the cladogram is a type of evolutionary tree.
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You are interested in understanding the regulation of nuclear lamina assembly. To create an in vitro system for studying this process you start with partly purified nuclear lamina subunits to which you will add back purified cellular components to drive nuclear lamina assembly. Before you start doing experiments, your instructor suggests that you consider what type of conditions would be most amenable to the assembly of the nuclear lamina from its individual subunits in vitro. Which of the following additions do you predict would be most likely to enhance the assembly of the nuclear lamina?
a. addition of phosphatase inhibitors
b. addition of ATP
c. addition of a concentrated salt solution that is 10 times the concentration normally found in the nucleoplasm
d. addition of protein kinase inhibitors
Answer:
d. addition of protein kinase inhibitors
Explanation:
The nuclear lamina is a structure composed of intermediate filament type proteins that is located between the inner nuclear membrane and the peripheral chromatin of eukaryotic cells. The nuclear lamina is involved in diverse cellular processes including, among others, nuclear/chromatin organization, control of the cell cycle, differentiation, DNA replication, transcription, etc. It is known that the nuclear lamina disassembles during mitosis and post-translational phosphorylation at specific residues of the nuclear lamina proteins modulate the polymerization state of this lamina during the cell cycle. For example, in chicken, it has been shown that protein kinase C phosphorylation inhibits the nuclear import of lamin B2, a nuclear intermediate filament protein.
someone pls help w this
Answer:
B.
Explanation:
A 28 year old woman, 18 weeks pregnant following a one-night stand unprotected sexual encounter, went to her doctor after 36 hours of headache, fever, nausea, and vomiting. Her doctor admitted her to the hospital immediately with a 104F fever and neck stiffness. All neurological exams were otherwise normal. A gram smear of the CSF (test 1) was conducted and revealed gram-negative diplococci and culture on chocolate agar showed small colorless colonies (test 2). The doctors treated her with an antibiotic, but also performed a third test to confirm diagnosis molecularly. She recovered without any complications,
1. What did this patient have?
2. What risk factors made this patient more likely to get this infection?
3. What would this patient be treated with?
4. What type of molecular diagnostic test might the doctors have used and how does it work?
Answer:
1. On the basis of the symptoms given in the question the most possible infection would be Meningitidis by Neisseria meningitides bacteria, gram-negative diplococcus.
2. The infection mostly spread by saliva or droplets while coughing, or sneezing. It can also spread by having oral sex.
3. Antibiotics such as Cephalosporin antibiotic, ampicillin, Penicillin, and Chloramphenicol used in the treatment of Meningitidis.
4. PCR-based meningococcal DNA detection is the main or common molecular level diagnosis of these infections. It amplifies the DNA and amplified PCR products are visualized on gel-based systems. This involves, amplifying, annealing in 5 to 3 prime direction.
Geologist organized the geologic time scale based on
O A) their favorite time in history
OB) evenly spaced time segments
O C) rock and fossil records
O D) none of the above
Answer:
OB) evenly spaced time segments
Explanation:
please mark this answer as brainliest
what is the meaning of love ? ...What is love?
Answer:
Love is a feeling
Explanation:
Answer:
Love is a feeling, it's when you have affection for someone and you trust them and care about them. The power of love is always strong.
Stay hydrated and Keep Smiling :)
How does the cloning animals affect the environment (3-5 sentences)
name the group of algae most closely related to plants
Answer:
because it is a living thing.
and plants are living organisms?
n 2000, Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found. The fossilized dinosaur was sticking out of the wall of a canyon in Montana. Many scientists were eager to study the fossils.
Dr. Mary Schweitzer got one of the leg bones to analyze. Dr. Schweitzer’s assistant dissolved the bones in acid and discovered that some soft tissue had survived even after 68 million years. The discovery was a shock to the scientific community. No one had ever found such old tissues.
Before laying eggs, female birds store calcium inside their bones that they will need to make eggshells. This layer of bone is called medullary bone. In the T. rex leg bone, Dr. Schweitzer found tissue just like the medullary bone of birds. The dinosaur was a female! If Dr. Schweitzer’s hypothesis is right, she is the first scientist to identify the sex of a T. rex. Which organ system includes the bones?
A. skeletal system
B. muscular system
C. reproductive system
D. integumentary system
Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found and is the first scientist to identify the gender of a T. rex, the organ system is the skeletal system, as it includes the bones that are present in Option A.
What is the significance of the skeletal system?The skeletal system, which provides structural support, is important for animals as it protects vital organs, supports muscles, and helps in movement. Also, the bones synthesize the blood cells, such as the red blood cells, which carry nutrients and oxygen, it also maintains the individual's balance and posture and provides a veil over the fossil records.
Hence, Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found and is the first scientist to identify the gender of a T. rex, the organ system is the skeletal system, as it includes the bones that are present in Option A.
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When H. pylori was first discovered, researchers doubted the finding. It was thought that the acidic environment of the stomach was too hostile for microbes to thrive. Newer research using genetic analysis and culture techniques has revealed that there is a diverse gastric microbiota. Of the options below, what is the only one that does not involve genetic analyses?
A. Sequencing approaches have shown that the normal microbiota includes Archaea and provide mechanisms for studying their distribution.
B. Knowledge of growth rates allows researchers to predict responses to changing conditions.
C. Knowledge of the microbiota from sequencing efforts has been used to improve cultivation techniques.
D. Genetic analyses have been used to examine the dominant species in different individuals, showing that it varies from one individual to another.
Answer:
B. Knowledge of growth rates allows researchers to predict responses to changing conditions.
Explanation:
Genetic analyzes are tests that try to identify the genetic composition of a living being, being able to analyze the DNA in a profound way and obtaining crucial information about the organism. The most common way to carry out a genetic analysis is through the sequencing of genes, since they are segments of DNA molecules. Therefore, we can conclude that among all the response options presented above, all that refer to the sequencing of genes should be discarded. Thus, we can see that option B is the correct option, since the analysis of growth rates does not involve a genetic analysis.
How can the planting of new trees help reduce climate change? *
A They help decrease the amount of carbon dioxide in the atmosphere
B They help decrease the amount of nitrogen in the atmosphere
C They help decrease the amount of oxygen in the atmosphere
D They help decrease the amount of hydrogen in the atmosphere
Answer:
A
Explanation
Trees use carbon dioxide from the environment. This will result in a loss of carbon dioxide from the atmosphere leading to a reduce in climate change.
What type of environment did the first land plants probably live in?
Answer:
fluvial wetlands
Explanation:
The earliest megafossils of land plants were thalloid organisms, which dwelt in fluvial wetlands and are found to have covered most of an early Silurian flood plain. They could only survive when the land was waterlogged.
The image best illustrates which change? The image illustrates a human-induced environmental change. O pollution O wildlife hazard O eutrophication O non-sustainable harvesting
Answer:
B
Explanation:
i took the unit
Answer:
Yea I think it’s B too
Explanation:
3
Scientists discovered a new organism that thrives on the leaves of palm trees. The organism
is eukaryotic, unicellular, and reproduces through binary fission. It also makes its own food
through photosynthesis. This organism's characteristics most closely match the characteristics
of which Kingdom?
(2 points)
Answer:
Plant
Explanation:
The organism characteristics most closely match to characteristics of plant kingdom
During prophesy I of meiosis, these pairs form a tetras in a process called _.
What is the outcome of glycolysis?
A. Two molecules of pyruvate and two molecules of ATP.
B. Four molecules of ATP.
C. ATP, NADN and FADH..
Which of the following things is not made of wither fermentation?
Cheese
Yogurt
Bread
Peanut butter
Chocolate
Answer:
peanut butter not very sure
If a codon has the nucleotide sequence UGA, what does the corresponding
anticodon have as its sequence?
A) UGT
OB) UGA
C) ACT
D) ACU
can you please help me
Answer: 41. primary. 42. temporary storage. 43. secondary. brainliest?
Explanation:
PLEASE ANSWER ILL GIVE BRAINLIEST
Answer: letter C brainliest?
Explanation:
what are the different between plant and animal cell.
Answer: A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. Animal cells simply have a cell membrane, but no cell wall.
Explanation:
PLEASE HELP
Identify the "Four Rs" of solid waste reduction and give an example of how
individuals can apply each strategy.
Answer:
the Department of Recycling & Resource Management uses the "4 R's" - which are: Reduce, Reuse, Recycle and Rethink.
The Department of Recycling & Resource Management uses the "4 R's" - which are: Reduce, Reuse, Recycle and Rethink.
What are the 4 R's of waste disposal explain each in a sentence?The four Rs of waste disposal are:
Refuse: Say no to the non biodegradable wastes Reduce: Decreasing the accumulation of wastes Reusing them wherever possible.Thus, uses the "4 R's" - which are: Reduce, Reuse, Recycle and Rethink.
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Which of the following is a difference between arteries and viens?
arteries carry blood and veins carry only plasma
arteries do not have valves and veins do have valves
arteries are thin and veins are thick
arteries carry blood back to the heart and veins carry blood to the heart
6) What are the 3 qualities of light that affect organisms?
Answer:
intensity, duration and quality
Explanation:
Light energy is used in photosynthesis, the plant's most basic metabolic process. When determining the effect of light on plant growth there are three areas to consider: intensity, duration and quality. Light intensity influences the manufacture of plant food, stem length, leaf color and flowering.
Answer:
Intensity, duration, and quality.
Explanation:
Not sure though