Answer: seven
Explanation: the valence electrons are the numi of electrons found in the outermost shell of an element. The group of an element indicates it's number of electrons in the outermost shell while the number of shells occupied by electrons indicates the period.
Thus since the element is in group seven it has seven valence electrons.
A culture of living cells includes a solution called a _____.
A) concentration
B) slide
C) flask
D)medium
Answer:
D)Medium
Explanation:
A culture of living cells is grown over a solution that is called as a growth medium. A growth or culture medium can be in the form of solid, semi-solid or liquid. It is typically designed to facilitate the growth of the living cells of plants, animals, humans and microbes.
13 POINTS MY DUDES! AND NO LINKS OBVIOUSLY!!!
In a moth population, 47 are brown, 15 are yellow, and 34 are black. What is the approximate probability of a moth being black?
A. 2%
B. 49%
C. 16%
D. 35%
Answer:
D
Explanation:
34/96= 35%
The mathematical rule of three can be used to take probabilities. In the exposed example, the approximate probability of a moth being black is 35% (Option D).
------------------------
Available data:
47 moths are brown15 moths are yellow34 moths are blackThe total number of individuals in this population equals the addition of brown, yellow, and black individuals.
This total number of individuals equals 100% of the population.
So to get the probability of a moth being black, we can just perform a rule of three.
To do it, we need to get the percentage of black individuals in the current population.
96 moths ------------------------- 100% population
34 black moths ----------------- X= (34 x 100) / 96
=35.41 ≅ 35% of the population
The approximate probability of a moth being black is 35%.
----------------------------------
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Replication is said to be semi-conservative. What does this mean about the chain being made?
Half is_______________________________, the other half is_________ __________
Answer:
Explanation: Replication is a semiconsecutive process this means that the strands of the DNA molecule separate to form two separate templates which will then combine with nucleotides following the complementarity base sequence to form two new daughter DNA
Conservationists help to restore ecosystems. Which activity will positively affect the abiotic conditions of an ecosystem?
A.
Keeping lakes and rivers free of pollution.
B.
Planting new trees to provide food for animals.
C.
Monitoring the ecosystem for bacterial pathogens that can cause illness.
D.
Mating endangered animals in captivity and restoring them to their natural habitat.
What is the purpose of an outline?
to list the main topics and show the order they will appear in
to show the number of sentences in each paragraph
to help you remember key words about your topic
Answer: to list the main topics and show the order they will appear in
Explanation: Outlines are intended to help a person organize a paper and help the paper flow well.
Answer:
to list the main topics and show the order they will appear in
Explanation:
Name:
133
Unit 10 & 11 RETEST: Expressions &
Equations
Knowledge - Parts of equations and expressions.
13
1. Label each as either an equation or an expression.
a) 5x - 3 = 12
b) 6x - 3
c) 7x + 5 = 9
2. Label each part of the equation. (numerical coefficient, variable, constant term.
What are the math questions
5x-3=12
6x-3
7x+5=9
Are they an equation or expressions?
Explanation:
To find - 1. Label each as either an equation or an expression.
a) 5x - 3 = 12
b) 6x - 3
c) 7x + 5 = 9
2. Label each part of the equation. (numerical coefficient, variable, constant term.
What are the math questions
5x-3=12
6x-3
7x+5=9
Are they an equation or expressions?
Solution -
1.
An expression containing variables, numbers, and symbols.
An equation that has equal to sign.
a.)
5x - 3 = 12
It is an equation (because it has = sign)
b.)
6x - 3
It is an expression
c.)
7x + 5 = 9
It is an equation (because it has = sign)
2.
Variable is those whose values can be change. For example x, y, z...
Constant term whose values are fixed. For example 10, 4, 5
Numerical coefficient are the constants that placed just before the variable. For example in 4x- 4 is the variable coefficient.
a.)
5x-3=12
5 is Numerical Coefficient
12 and -3 is constant term
x is variable
b.)
6x-3
6 is Numerical Coefficient
-3 is constant term
x is variable
c.)
7x+5=9
7 is Numerical Coefficient
9 and 5 is constant term
x is variable
You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives regular water. After a two-week period, the height is measured.
Which gas was most likely not present in creating the amino acids of early Earth's waters of the past?
ammonia
sulfur
hydrogen
nitrogen
Answer: the answer is sulfur.
Explanation: I took the test
What kind of relationship do these
bacteria and humans have?
a. Commensalism
b. Mutualism
c. Parasitism
d. Predation
Answer:
a.commenslism
Explanation:
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Answer:
Question 2 is option 2. It is the only one that makes sense and it says sediment sin it.
Explanation:
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Cross an individual who is heterozygous for baldness with one who is hom0zygous recessive. If the children were all boys, what would the phenotypic ratio for the above cross be? What would the phenotypic ratio be if they were all girls?
Every organism requires a set of instructions that specifies its traits. This information is carried with the cells of the organism. Which set of statements BEST describes hereditary information in eukaryotic cells? Group of answer choices
Answer:
This question lacks options, the options are;
A. Genes are made up of chromosomes and both are found in the cell’s cytoplasm.
B. Chromosomes are made up of genes and both are found in the cell’s cytoplasm.
C. Genes are made up of chromosomes and both are found in the cell’s nucleus.
D. Chromosomes are made up of genes and both are found in the cell’s nucleus.
The correct answer is D.
Explanation:
As rightly stated in this question, every living organism requires a set of instructions that specifies its traits. These set of instructions are embedded in a unit called GENE. Genes hold information needed for the survival of a cell in an organism.
These genes are located on a structure called DNA, which are folded or packaged into another structure called CHROMOSOMES. Each chromosome, hence, contains genes that are the unit of inheritance of a cell. In eukaryotic organisms, the gene is found on a chromosome, which is located in the NUCLEUS of the cell.
In this part of the laboratory exercise, you will learn how to read a weather station model. Using your Earth Science Reference Tables, fill in the data tables below each station model.
Answer:
welp, hope he helps you sir!
Explanation:
Which of the following contributes to the diversity of an ecosystem?
Increased keystone species
Reduced species richness
Increased invasive species
Increased foundation species
Answer:
Increased keystone species
Explanation:
An organism is a keystone species when it contributes to the definition of a given ecosystem such that the absence of the keystone species in an ecosystem, the ecosystem will change dramatically or be gradually wiped out
The effect of the keystone on its environment is unevenly large when compared to its abundance relative among other organisms within the ecosystem
The keystone is therefore, a prime source of balance of nature, diversity and well-being of the ecosystem
Therefore, the option that contributes to the diversity of the ecosystem is;
Increased keystone species.
Bison have come close to extinction due
to uncontrolled hunting, drought, and
disease. There is now very
little
genetic variation in bison
populations.
Which of the following is a result of the
limited genetic variation in the
current bison populations compared
to earlier bison populations with
more variation?
Select one:
O a. Bison in current populations are more resistant to new
diseases.
O b. The survival rate of young bison has increased in current
populations
O c. Bison in current populations are less able to interbreed with
other species
O d. The current bison populations are less likely to be able to
adapt to environmental changes.
Answer:
D.
Explanation:
Genetic variation among species is a result of adaptation to new environments, and the lack of genetic varition among bison species means that they are less likely to adapt to different environmnetal changes. this might be due to bison staying in a particular areas to not be hunted or ridden by disease.
if a parent cell starts with 22 chromosomes how many chromosomes will each daughter cell have after mitosis
Answer:
For mitosis, the DNA content of the daughter cells and the mother cell will always be identical. Since the number of cells have doubled, so has the DNA. The 16 chromosomes in the mother cell will be duplicated, then the duplicates split and evenly divided into the daughter cells. The 16 chromosomes in each daughter cell will be non-duplicated at first.
Explanation:
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Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell.
What is mitosis?
The division of a cell of the body that results in two cells, each with the same number of chromosomes as the original cell.
What is daughter cell?
The daughter cells from mitosis are called diploid cells. Diploid cells have two complete sets of chromosomes.
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Genes are strands of
found on chromosomes in the nucleus of a living cell.
A
mutations
B
DNA
C
minerals
D
cells
Answer:
b)DNA is the correct answer
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Kelp forests are unique and diverse coastal ecosystems in the ocean. How would a
decrease in biodiversity in these ecosystems, due to changing climate, affect the larger biosphere? please help!!!
Explanation:
Kelp forests are the anchor of nearshore ocean wildlife communities across the U.S. West Coast and northeast, sustaining marine biodiversity by providing shelter, habitat and even food for an array of fish and invertebrates.
What is the scale that
measures the strength of an
earthquake
Answer: The USGS currently reports earthquake magnitudes using the Moment Magnitude scale, though many other magnitudes are calculated for research and comparison purposes.
Answer:
The Richter scale measures the largest wiggle (amplitude) on the recording, but other magnitude scales measure different parts of the earthquake. The USGS currently reports earthquake magnitudes using the Moment Magnitude scale, though many other magnitudes are calculated for research and comparison purposes.
Explanation:
What is the diaphragm? Please help!
A. muscle
B. tendon
C. cartilage
D. ligament
Answer:
A
Explanation:
because
Answer:
A.muscle
Explanation:
It's the muscle below our lungs
List 3 examples of something that have evolved over time.
Answer:
peppered moth- became darker because of pollution
darwins finches- beaks became smaller over time to eat the smaller nuts/seeds left
deer mice- became lighter being as their surroundings changed/ones that moved from forrests
Answer:
Peppered mothDarwin's finchesDeer miceExplanation:
These are the 3 examples of something that have evolved over time.
An important difference between a series and a parallel circuit is that a series circuit cannot have any breaks. A parallel circuit can have a break in one branch and the current can still flow through another branch.
Answer:
Yes.
Explanation:
Parallel circuit are those types of circuits in which break in one branch does not prevent the flow of current in the circuit and the current can still flow through another branch because there are more ways through which the current moves to other sources while on the other hand, series circuit refers to those circuits in which break in one branch can prevent the current flow in the circuit and the other sources can't receive current due to broken of the connection.
Select four ways bacteria growth is controlled.
food irradiation
boiling
freezing
refrigeration
canning
harvesting methods
fertilizer
Answer:
boiling, freezing, refridgeration, and fertilizer.
Explanation:
the first three have to do with temperature, which tends to kill bacteria. Pesticides kill bacteria by poisoning them
1. Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?
»» (c) Biological names can be written in any language.
EXPLANATION:➱ Biological names are derived either from Latin language or are latinised. This is because Latin language is a dead language and therefore it will not change in form or spellings with the passage of time.
Please help does someone know anything about this
Acids are identified by hydrogen or hydroxide?
Answer:
An acid is a substance that donates hydrogen ions. Because of this, when an acid is dissolved in water, the balance between hydrogen ions and hydroxide ions is shifted. Now there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic.
Explanation:
An organism's appearance, trait or other detectable characteristic is a what?
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An organism's appearance, trait or other detectable characteristic is a what?
[tex]\huge{ \mathfrak{ \underline{ Answer \: \: ✓ }}}[/tex]
The Organism's Phenotype is it's appearance or visible trait.
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How can black hole be destroyed?
Answer:
Eventually, in theory, black holes will evaporate through Hawking radiation. But it would take much longer than the entire age of the universe for most black holes we know about to significantly evaporate.
Explanation:
5. Cutting down trees in a forest alters the habitat of the organisms living in the forest.
True OR False
Answer:
true
Explanation:
i know things
Cutting down trees in a forest alters the habitat of the organisms living in the forest. The given statement is true.
What is habitat?
Habitat is known as the place where the animals lives and survive the place is known as the habitat. Cutting down the trees is known as the deforestation. The term migration has been defined as when the birds, animals, or human beings leaves the native place and move towards a new place due to weather or other physical condition is known as migration. Generally, when it is too much cold the birds of that particular area migrated to the place where they found suitable temperature for their survival.
The stage of dormancy is the stage when seed gets closed and not able to germinate as it closes its outer wall. The term hibernation is defined as the particular time period in which the organism hybernate himself for a period of time when the weather or the outer environment is not safe, or fit for his survival.Generally, when it is too much cold the birds of that particular area migrated to the place where they found suitable temperature for their survival.
Therefore, Cutting down trees in a forest alters the habitat of the organisms living in the forest. The given statement is true.
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The wing of a bird and the leg of a horse are very different looking structures. Although they look different, bird wings and horse legs are very similar in the arrangement of the bones that make up the limb. Which term is used by scientists to describe structures that look different on the outside but are actually similar in construction and develop from the same embryonic tissues? es -0) A) common descent B) analogous structures vestigial structures D) homologous structures Answer:
Answer: Homologous structures
Explanation: They are structures which have similarities in various organisms but carry out opposite functions. This is the opposite of analogous structures
1. Which weather station model above would most likely have snow? ___________
2. Which weather station model above would most likely have rain? ____________
3. Which weather station above has the highest air pressure? ____________
4. Which weather station model above has the highest wind speed?_________
Answer:
1. Station B
Station B has one of the lowest temperatures of 32°F(top left) which is a temperature that snow can form at. It also has full cloud cover which is something that station C does not have and as clouds are needed for snow, station B is most likely to have snow.
2. Station A
Station A has the highest dew point at 75 (bottom left) which means that it has the highest humidity and so is the most likely to have rain. That along with a full cloud cover (shaded circle), means there are clouds for rain to fall from.
3. Station B
Has the highest pressure at 998.
4. Station C
Wind speed is measured by the lines protruding from the circle and for this simplistic model, the more lines it has, the faster the wind is going. Station C therefore has the fastest wind speed.