Answer:
We are left with four haploid cells; each one genetically different from each other and the parent cell. 8. Describe the three ways meiosis produces genetic variability. We have seen that meiosis creates variation three ways: crossing over, mutations caused during crossing over, and independent assortment.
The table below shows the initial and final masses of a radioactive material whose half-life is 15 years.
Initial mass (in kilograms): 0.8
Final mass (in kilograms): 0.05
Based on the table, which of these conclusions is correct?
A.) The material decayed from 0.8 kilograms to 0.05 kilogram in 60 years.
B.) The material decayed from 0.8 kilograms to 0.05 kilogram in 30 years.
C.)The mass of the material was 0.1 kilograms after four half lives.
D.) The mass of the material was 0.1 kilograms after five half lives.
Answer:
A
Explanation:
1 half-life = .4 kg = 15 years
2 half-life = .2 kg = 30 years
3 half-life = .1 kg = 45 years
4 half-life = .05 kg = 60 years
Answer:
A
Explanation:
Initial mass is 8. The half-life is 15 years.
1st half life=.8/2=.4
2nd half life=.4/2=.2
3rd half life=.2/2=.1
4th half life=.1/2=.05
For each half life that it took it to go from .8 to 0.05, you add 15 years since that is the half life of the substance. 4*15=60.
So, the answer is A. The material decayed from 0.8 kilograms to 0.05 kilogram in 60 years.
Which type of growth occurs when population growth slows or stops after a period of exponential growth?
decreasing
exponential
linear
logistic
Answer:
B
Explanation:
Answer:
B
Explanation:
1)what organs make up the organ system , the circulatory system.
2)Bone tissue are shown on the left. what is the difference between tissue and specialized cells.
Answer:
1. Circulatory system is made up of your heart, arteries, veins and capillaries.
2. There isn't a photo attached. But Specialized cells perform specialized functions in multicellular organisms. Groups of specialized cells cooperate to form a tissue, such as a muscle. Different tissues are in turn grouped together to form larger functional units, called organs.
Explanation:
if we place a dialysis tube filled with water that is a 10% salt solution into a beaker that has a 5% salt solution water will...
A. have net movement OUT of the tube, this is a hypertonic solution compared to inside the tube
B. have net movement into the tube, this is a hypotonic solution compared to inside the tube
C. have net movement OUT of the tube, this is a hypotonic solution compared to inside the tube
D. have no net movement, this is an isotonic solution compared to inside the tube.
Answer:
The correct option is D.
have no net movement, this is an isotonic solution compared to inside the tube.
Explanation:
It will have no net movement, this is an isotonic solution compared to inside the tube because isotonic solution is a solution that has the same osmolarity or solute concentration in both solution, which allow free water movement across the semi permeable memberane on both solution i.e the concentration of the two solution are mostly the same.
what is the greenhouse effect
please give me the answer of this question
don't spam
Answer:
the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.
Explanation:
I think it can be incorrect also so refer to Science teacher also. also.
How many factors should a well-designed experiment test at one time?
Answer:
Depends on the number of experiment variables.
Explanation:
You should only test one variable/factor
The annual cost of snow removal for streets and highways in the U.S.
is estimated to be about how much?
O $20 billion
$20 million
$2 billion
O $2 million
While many homeowners shovel snow themselves, some sign an annual snow removal contract. Highly rated snow removal contractors say customers who sign a contract. annual snow removal contracts in 2013 reported paying an average of $378, million 4 years ago.
State tax revenues in December and January fell far short. projected increases in outstanding debt and annual debt service. year and SFY 2019-20 by a total of nearly $2 billion. The initial Executive Budget proposed using $500 million of the U.S. economy, as of the end of 2018, was in.
For nearly 20 years, the American Society of Civil Engineers has been on average, there were 188 million trips across a structurally deficient. ASCE analysis of U.S. Department of Transportation, Federal Highway assistance and may finance over $2 billion in water infrastructure investment.
These are all from different things, hope one of them helped!! (but if they didnt, super sorry!)
The annual cost of snow removal for streets and highways is estimated to be $2 billion.
A report from the environmental department in one of the universities in the United States gave an estimation of 2.3 million dollars as what is spent yearly to get snow and ice off the streets and highway.
Snow removal is simply an action that is undertaken to get snow off the streets or road after it snowed for safe and easy movement of people.
In conclusion it is estimated to be about $2 billion dollars given 2.3 billion dollars is around this figure.
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(Apoptosis is? ) A)cancerous cells
B)programmed cell death
C)non-dividing cells
D)Part of the kinase/cyclin cascade
Answer:
B
Explanation:
death of a cell which occurs as a normal and controlled part of an organisms growth
Which one of the following gases is not an important component of soil?
oxygen
nitrogen
hydrogen
carbon dioxide
Why most foods needs to be digested? Give at least 3 reasons
Answer:
Why most foods needs to be digested? Give at least 3 reasons.
Explanation:
Foods must be digested cause of the following reasons:
1. To get energy the food must be digested.
2. To provide nourishing vitamins and minerals to our body.
3. You will be affected by some diseases if you didn't digest your food.
What are the advantages and disadvantages to produce few offspring that are extensively cared for and protected?
According to Vince Carter, "...the most important aspect of getting his degree was the sense of accomplishment it brought. " Use information from the selection and your own ideas to explain what he meant by this statement.
Answer:
the hard work he went through
Unzips the DNA strand by breaking hydrogen bonds
Students are given data from an investigation that identified some of the chemical elements present in four different samples
Elements Present in Samples
Sample
Elements
1
2
Hydrogen, phosphorus, and nitrogen
Aluminum, silicon, and copper
Calcium, potassium, and nitrogen
Iron, oxygen, and magnesium
3
4
Which sample was most likely DNA?
Sample 1
Sample 2
Sample 3
Sample 4
Answer:
sample 1
Explanation:
has phosphorus, main chemical compund
Students are given data from an investigation that identified some of the chemical elements present in four different sample correct sample is sample 1.
What defines a chemical element?Chemical element, also called Part, any substance that cannot be decay into simpler subsnces by normal chemical processes.
Thus, sample 1 is correct.
To learn more about elements click here:
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How much copper content was mined in 2014?
A)
5 million tons
B)
10 million tons
C)
15 million tons
D)
20 million tons
A patient in the emergency room has been in cardiac arrest for three minutes before her heart is restarted. What is the most likely consequence of this episode?
Answer:
There will be few if any complications.
Explanation:
Just took the unit test review
Answer:
there will be few if any consequences
Explanation:
just finished unit test review, hope this helps <3
brainliest pls? :)
Can you share some interesting information about HIV?
Answer:
yes HIV can be transmitted through sex or already chewed food like your mom did for you when you were a baby it can also your mothers breast so i hope u drank out of a bottle
Explanation:
How can agriculture cause soil pollution?
Agriculture pollution
Explanation:
Agriculture is a main source of pollution in lake water. chemical and fertilzer
Answer:
Pesticides and fertilizers used on crops fed to animals are a major contributor to land pollution
Explanation:
hope this helps :)
What are some of the things that Vincent had to do to enhance his genetic
"imperfections?" so that he looked like the real Jerome? GATTACA
Answer:
Lengthen his legs and straighten his teeth.
Explanation:
Vincent had done surgery to lengthen his legs and straighten his teeth in order to enhance his genetic imperfections because he has short legs and improper teeth. He also had some other diseases such as heart disorder, neurological disorder, manic depressive and attention deficit disorder. These disorder can't be cure because it occur to him genetically.
What gave planets in the solar system their initial speeds?
Answer:
When the cloud of gas which formed the solar system fell inwards to form the solar system, it had net angular momentum. ... The cloud that formed the solar system had angular momentum which was deposited into the velocities of planets and other bodies in orbits around the Sun (as well as the Sun's rotation).
Which type of rock is diorite?
O A. Sedimentary
O B. Intrusive igneous
O C. Extrusive igneous
O D. Metamorphic
Answer:
Intrusive Igneous
Explanation:
It is commonly composed of about two-thirds plagioclase feldspar and one-third dark-coloured minerals.
please help me!!!!!!!!!!!!!!!!!!!!!!
Answer:Fungi are called saprophytes because they are the ones that depends on dead and debries for nutrition .
What is it called when DNA is not bunched together
which describes a difference between a positive and negative feedback loop?
a. the output of a system stimulates another cycle of the system only in a positive feedback loop.
b. the output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.
c. the output of a system maintains conditions around a set point only in a positive feedback loop.
d. the output of a system signals the system to disregard the stimulus only in a negative feedback loop
Answer: b. the output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.
Explanation:
In the negative feedback loop, the feedback reduces the excessive response of the stimulus for example regulation of body temperature, and control of blood glucose level. In the positive feedback loop, the response of a stimulus is intensified. Example, positive feedback is the childbirth and blood clotting. According to the negative feedback loop the output of the system keeps the internal body environment constant with respect to the changes in the external environment hence, maintains the homeostasis.
Answer:
b. the output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.
Explanation:
People in the Middle Ages were beginning to question:
Drama
Authority
Scientists
Do anyone why blood is red?
Answer:
Human blood is red because of the protein hemoglobin, which contains a red-colored compound called heme that's crucial for carrying oxygen through your bloodstream.
Blood gets its bright red color when hemoglobin picks up oxygen in the lungs
the oxygen essentally makes it red
Explanation:
What is the mRNA and Amino Acids for: TACACCTTGGCGACGACT
Answer: A U G U G G A A C C G C U G C U G A
Explanation:
Answer:
AUGUGGAACCGCUGCUGA
Explanation:
At which point does warm air begin to rise before colliding with cold air?
Answer: At which point does warm air begin to rise before colliding with cold air. 3
Explanation: Hope this help
Answer:
Answer 3 where there is a red arrow swooping up
Explanation:
That is warm air entering from the right and moving upwards (rising) before it collides with the cold air.
An_____is a variation of a gene
Answer:
allele
Explanation:
The genetic variation of an entire species is often called genetic diversity. Genetic variations are the differences in DNA segments or genes between individuals and each variation of a gene is called an allele.
Answer:
An allele is a variation of a gene.
What can you conclude about DNA from the idea that it is a cell's "brain” ?
A. it helps think.
B. it controls what cells do
C. it requires a lot of blood to operate properly
D. it is located at the top of the cell
The conclusion about DNA from the idea that it is a cell's "brain” is that it controls what cells do.
DNA:
DNA, also known as deoxyribonucleic acid, is the nucleic acid responsible for storing the genetic material of the cell. The DNA is found in the nucleus of eukaryotic cells or in the cytoplasm of prokaryotic cells. The DNA molecule produces proteins via the process of gene expression. The proteins, which acts as enzyme and hormone, controls cellular processes. Therefore, the conclusion about DNA from the idea that it is a cell's "brain” is that it controls what cells do.Learn more at: https://brainly.com/question/19365715?referrer=searchResults