Explain the cause-effect relationship between environmental changes and the extinction of species.
Answer: Anything living needs to have certain conditions, if for example a group of flightless birds who are adapted for warm weather had their environment get colder each year and more extreme the surrounding plants and other animals may have a difficult time surviving and this will cause the birds to have less food. The birds also will not be accustomed to these changes and will not be able to adapt their bodies fast enough. This also makes reproduction difficult and in turn further dwindles the population.
Hope this helps!
Explanation:
Replicate the following DNA sequence CCC
Answer:
GGG
Explanation:
Use AT GC to replicate DNA sequence
Body processes are regulated by which nutrients?
proteins
carbohydrates
All options are correct
lipids
Answer:
C
Explanation:
Protiens, Carbohydrates, and Lipids all influence bodily processes.
Look at sucrose, a disaccharide, and cellulose, a polysaccharide, on the carbohydrate page. How do you think these two molecules were formed?
help please
Explanation:
Glucose and fructose are joined to form sucrose.
Cellulose is a polymer of glucose.
Monomers of sucrose and cellulose are joined by glycosidic bond to form disaccharides and polysaccharides respectively.
Rapid reproduction is an advantage of which process?
A. gamete formation
B. sexual reproduction
C. asexual reproduction
D. chromosome duplication
Answer:
I believe the correct answer is asexual reproduction because they can reproduce fast, and with multiple offspring. Hope this helped you!
The sun, rocks, water are all example of...
Answer:
are examples of abiotic factors
Explanation:
Why are the best index fossils from species that only existed for a short period of time ?
Answer:
Because once they were very common they disappeared after the mass extinction event. ... Many geologic periods were defined by events that made natural boundary to the period.
Answer: Because once they were very common they disappeared after the mass extinction event.
Explanation: Hope this helppssss!!! :)
Would the control group not receive the treatment, or receive the same treatment that has been used before?
Answer:
The control group receives either no treatment, a standard treatment whose effect is already known, or a placebo (a fake treatment).
please help its due in a hour!!!!!
Answer:
1. The difference between the normal hemoglobin protein DNA sequence and the sickle cell hemoglobin DNA sequence is a base to base shift, in this case adenine (GAG) to thymine (GTG).
2. The difference affects the amino acid sequence of the protein by replacing glutamic acid (Glu) with valine (Val).
Explanation:
In sickle cell anemia, a change in the DNA nucleotide sequence is observed, where adenine is substituted by thymine, whose expression is the change in the amino acid sequence of globine β, incorporating valine instead of glutamic acid. This represents a molecular mutation - point mutation - by subtitution, which corresponds to missense mutation.
Normal hemoglobin protein in a RBC
DNA CTG ACT CCT GAG GAG AAG TCT
Amino acids Leu Thr Pro Glu Glu Lys Ser
Sickle cell hemoglobin protein in a RBC
DNA CTG ACT CCT GTG GAG AAG TCT
Amino acids Leu Thr Pro Val Glu Lys Ser
When GAG is transcribed to mRNA, the CUC codon is obtained, which codes for glutamic acid. Thymine substitution causes the DNA sequence to change to GTG, which is transcribed as CAC, the codon that encodes the amino acid valine. The change from glutamic acid to valine in β-globin causes an altered hemoglobin, giving the abnormal erythrocytes observed in sickle cell disease.
Determine the amino acid chain that would result from the sequence AUG-CCC-GGA-UUA-UAG.
Answer:
methionine-proline-glycine-leucine-stop
Explanation:
Using an amino acids chart, you can line up the 3 bases in each section to find the protein chain that corresponds. The stop at the end marks the end of protein synthesis, which ends the sequence.
The compound comprising carboxylic and amino groups is called amino acids. They are vital for the formation of proteins in the cells.
Sequences are read in the three pairs of codons in the form of triplets to form a form an amino acids sequence.
The amino acid sequence that will be formed from the given sequence AUG-CCC-GGA-UUA-UAG will be:
methionine-proline-glycine-leucine-amber
AUG is the start codon which also codes for the amino acid methionine.CCC codes for the amino acid proline and its one-letter code will be P.GGA is glycine and is abbreviated as G.UUA codes for leucine and is represented by U.UAG is the amber or the stop codon which is responsible for terminating the sequence.Therefore, Met-Pro- Gly- Leu- Amber is the amino acid sequence.
To learn more about amino acid sequences follow the link:
https://brainly.com/question/12810773
If RNA strand reads AUG CGU AAU UAU, what did its source DNA read?
Answer:
TAC GCA TTA ATA
and apparently my answer needs to be 20 charcters long
NEED ANSWER ASAP. Individuals with advantageous traits for their environment have a better chance of surviving
than those with less helpful traits. Explain how this is demonstrated in the moth information
above. Use specific information and examples.
Answer:
The moth with camoflauged skin will have a better chance of surviving because it will be harder for predators to see them.
Explanation:
Sorry but I can't quote anything because I don't have the book.
What phase of mitosis are the chromosomes taken from? Why?
Answer:Metaphase
Explanation:
What molecule provides the energy that powers active transport?
A. ATP
B. Glucose
C. Water
What term is used to describe an organism that consists of
more than one cell type?
Enter the answer
Answer:
Multicellular organisms.
Explanation:
Multicellular organisms are organisms that consist of more than one cell, in contrast to unicellular organisms.
Which of the following is NOT part of the cell theory?
A : All life functions are carried on by cells
B: All cells come from cells that are already alive
C : All cells must breath air
D: All organisms are made up of cells
Answer:
C. Because that we had to go over that. That's so easy
In multicellular organisms, life begins as a single cell until blank occurs, causing growth
which phase of the cell cycle do cells go to when they are not ready to divide?
Answer:
Interphase
Explanation:
Answer:
interphase
Explanation:
I hope this helps!!!
Does this satisfy the octet rule why or why not
Answer:
No, it does not, because the octet rule says that an atom needs to have eight electrons in its valence shell to be stable. The exceptions are hydrogen and helium, which need only two electrons
Answer: No it doesn’t
Explanation:
(b)
The image below shows part of the surface of a leaf.
0.1 mm x 0.1 mm
The length and width of this piece of leaf surface are both 0.1 mm
Calculate the number of stomata per mm of this leaf surface.
Explanation:
You didn't attach a picture so i'll just explain how to find the number of stomatas/mm^2.
first you find the surface by multiplying the length by the width
0.1*0.1=0.01mm^2
now you count the numer of stomatas in the picture
in0.01mm^2 you have.........................x stomatas
in 1mm you have ...............................y stomatas
y=100x
Scientists took some cells and grew them in a Petri dish with nutrients. After a while, the cells grew to form a thin layer and stopped when they came in contact with other cells. What does this tell you about cells and the cell cycle?
Answer:
Contact inhibition.
Explanation:
Contact inhibition is a response of a cell in which cell growth stopped when it touches or comes in contact with another cell. When the normal and healthy cells grows and touching other cells, the cell receives a red light signal to stop its growth so the cell stop its growth while on the other hand, if there is no contact with other cell the cell continues its growth.
A 200g ball begins falling from a height of 15m. If the (a) acceleration due to gravity is 10 m/s^2. How long do you calculate it will be before the object reaches the ground? Which formula will you use?
Answer:
1.732 seconds
[tex]s=ut+\dfrac{1}{2}at^2[/tex]
Explanation:
s = Displacement of ball = 15 m
g = a = Acceleration due to gravity = [tex]10\ \text{m/s}^2[/tex]
u = Initial velocity of the ball = 0
t = Time taken
From the kinematic equations we use the following formula
[tex]s=ut+\dfrac{1}{2}at^2\\\Rightarrow 15=0t+\dfrac{1}{2}\times 10t^2\\\Rightarrow t=\sqrt{\dfrac{15\times 2}{10}}\\\Rightarrow t=\sqrt{3}=1.732\ \text{s}[/tex]
The object will reach the ground after 1.732 seconds.
The formula used is [tex]s=ut+\dfrac{1}{2}at^2[/tex].
With your partner, decide on a plan for investigating the effect of exercise on heart rate. The exercise could be running in place or doing jumping jacks. Record the steps below.
Pls I need the answer fast
Answer:
Materials
• Scrap piece of paper
• Pen or pencil
• Clock or timer that shows seconds or a helper with a watch
• Comfortable exercise clothes (optional)
• Calculator
Preparation
• Practice finding your pulse. Use the first two fingers of one hand to feel your radial pulse on the opposite wrist. You should find your radial pulse on the "thumb side" of your wrist, just below the base of your hand. Practice finding your pulse until you can do it quickly. (You can alternatively take your carotid pulse to do this activity, but be sure you know how to safely take it and press on your neck only very lightly with your fingers.)
• Measure your resting heart rate, which is your heart rate when you are awake but relaxed, such as when you have been lying still for several minutes. To do this, take your pulse when you have been resting and multiply the number of beats you count in 10 seconds by six. This will give you your resting heart rate in beats per minute (bpm). What is your resting heart rate? Write it on a scrap piece of paper.
• You will be measuring your heart rate during different types of physical exercises over a period of 15 minutes. Choose at least two different exercises. Some examples include jumping rope, lifting a two-pound weight, riding a bike, hula-hooping, walking, etc. Gather any needed materials. (If you want to make a homemade hula-hoop, steps for doing this are given in the activity Swiveling Science: Applying Physics to Hula-Hooping .) Do you think the activities will affect your heart rate differently? How do you think doing each activity will affect your heart rate?
Procedure
• Choose which exercise you want to do first. Before starting it, make sure you have been resting for a few minutes so that your heart is at its resting heart rate.
• Perform the first exercise for 15 minutes. While you do this, write down the number of beats you count in 10 seconds after one, two, five, 10 and 15 minutes of activity. (You want to quickly check your pulse because it can start to slow within 15 seconds of stopping exercising.) How do the number of beats you count change over time? How did you feel by the end of the exercise?
• Calculate your heart rate after one, two, five, 10 and 15 minutes of exercise by multiplying the number of beats you counted (in 10 seconds) by six. How did your heart rate (in bpm) change over time?
• Repeat this process for at least one other exercise. Leave enough time between the exercises so that your heart rate returns to around its normal resting level (this should only take a few minutes). How did you feel by the end of the second exercise? How did your heart rate change over time for this exercise?
• Take a look at the results you wrote down for this activity. Which exercise increased your heart rate the most? Which exercise increased your heart rate the fastest? Which exercise(s) elevated your heart rate to the target heart rate zone (50 to 85 percent of your maximum heart rate, where your maximum heart rate is 220 bpm minus your age)? Do you notice any consistent patterns in your results?
• Extra: Try this activity again but test different physical exercises. How does your heart rate change when you do other exercises? How are the changes similar and how are they different?
• Extra: Measure your heart rate while lying down, while sitting down, and while standing. How does your heart rate change with body position?
• Extra: Repeat this activity with other healthy volunteers. How does their heart rate compare to yours? How does their change in heart rate while exercising compare to how yours changed?
• Extra: Try this activity again but vary the intensity of your exercise. What intensity level elevates your heart rate to 50 percent of its maximum heart rate? What about nearly 85 percent of its maximum? Be sure not to exceed your recommended target heart rate zone while exercising
Explanation:
If you did a moderately intense exercise, such as walking, you may have seen an initial jump in your heart rate (where your heart rate falls within the lower end of your target heart rate zone within about one minute of exercise), but then your heart rate only slowly increased after that. After 15 minutes, you may have reached the middle of your target heart rate zone. To reach the upper end, people usually need to do a moderately intense exercise for a longer amount of time (such as for 30 minutes). If you did a more strenuous exercise—hula-hooping, for example—you may have seen a higher initial bump in your heart rate (such as reaching the middle of your target heart rate zone after just one minute of exercise), and then your heart rate stayed about the same for the remaining 14 minutes of exercise. Overall doing a more strenuous exercise generally raises a person's heart rate faster compared to doing an exercise that is only moderately i
Important vocabulary continued: what is the difference between a unicellular organism and a multicellular organism?
Answer:
unicellular is a organism that is only one cell. most of the time they are your bacteria and viruses. while a multicellular organism is a organism with many cells. can be anything from something you cant to to plants and animals that you can see
Explanation:
Here are some of the tRNA molecules in Lucy's white blood cells. Let's see if tRNA #1 is carrying the correct amino acid for its anticodon. Using the RNA Pairing Rules, find the correct codon for this tRNA's anticodon. RNA Pairing Rules A ↔ U G ↔ C Anticodon CCA Codon Type Here. Amino Acid
Answer:GGU
Explanation:
GGU. I just completed it on gizmos
The tRNA molecules in Lucy's white blood cells. RNA Pairing Rules A ↔ U G ↔ C Anticodon CCA Codon GGU.
What are anticodons?Once the mRNA codon has been translated by the ribosome, transfer RNA, also known as tRNA, is in charge of directing the appropriate amino acid into protein synthesis. Because of this, each mRNA codon needs a corresponding tRNA anticodon.
Each nitrogenous base in RNA must mate with a complementary base according to the following rules:
Adenine is complementary with uracil A=U
Cytosine is complementary with Guanine C=G
In this case, it can be seen that:
For the anti-codon: CCACodon: GGUAminoacid: GlyTherefore, for the tRNA anticodon CCA the corresponding codon is GGU, which codes for the amino acid Glycine (Gly).
To learn more about anticodons, refer to the link:
https://brainly.com/question/20689764
#SPJ2
1. Which of the following are carcinogens (risk factors that are known to cause cancer)? a. harmful chemicals
b. genetic factors
c. excessive exposure to UV rays
d. all of the above
e. none of the above
Answer:
d. all of the above
Explanation:
Replication is when DNA is?
O Mutated
O Changed
O Copied
O Destroyed
Can someone give your perspective on the negative impact of human activity on the environment. include pollution of marine and wetlands.....PLEASE I NEED THIS ONE!
thanks:)
PLEASE SOMEONE HELP I’ll help back pls!!
Which of the following statements regarding cell size is true?
Large animals have large cells
Small animals have small cells
Large animals have small cells
Large animals have more cells
Answer:
Large animals have more cells.
Explanation:
The animal is larger so it's going to compose of more cells then a small animal, but the cells are still the same size.