Answer:
More recent phylogenetic analyses, based on mitochondrial DNA, have suggested that the crocodile shark is closely related to either the megamouth shark or the sand sharks (Odontaspididae).
Answer:
yes??
Explanation:
look at the other answer
ILL GIVE BRAINLIEST!!!
please answer!
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
A person infected with the human immunodeficiency virus (HIV) may not have any symptoms for an
extended period of time. This information suggests that the reproductive cycle of the HIV virus is —
1. lysogenic, because the virus develops over a long period of time
2. lytic, because the virus causes an autoimmune disease and eventually death
3. lysogenic, because the virus primarily affects older people
4. lytic, because of the quick onset of symptoms after infection
Make a list of the energy carriers involved in the Krebs cycle. Include their names before and after they accept the electrons.
Thank you!
Answer:
12
Explanation:
Which example is a way that intercellular Communication occurs
Answer:
A signal is sent from a nerve cell to a muscle cell
Explanation:
I just took this test and this was the correct answer.
Answer: A signal is sent from a nerve cell to a muscle cell
Explanation:
what is the cell doing when it's not going through mitosis
(Giving brainliest!!)
What are the 3 common characteristics of planets? Describe one of the characteristics of one of the planets in our solar system
Answer:
The solar system is host to two broad categories of planets. The four closest to the sun — Mercury, Venus, Earth and Mars — are the terrestrial planets. They have rocky surfaces enclosed by relatively shallow atmospheres. The gas and ice giants — Jupiter, Saturn, Uranus and Neptune — are outliers. They are much larger than the terrestrial planets, but their cores are small and icy. Most of their size is formed by a combination of gases that become denser and hotter as you get closer to the core. Scientists count eight planets overall. Pluto was reclassified as a dwarf planet in 2006.
Explanation:
PLEASE HELP!!!!! PLEASE HELP!!!
Answer:
its "A" water flowing over a tall cliff
Explanation:
i did not mean to make this
Answer:
wait how could you make something that you didnt mean to make, lol anyways I hope you have an amazing day, and be careful of this virus
Explanation:
In the mainlands of Southeast Asia
what crop does the climate help to
foster?
A. cantaloupe
B. wheat
C. rice
Answer:
the answer is A. cantaloupe
Explanation:
8. This
type of consumer is vital for making nutrients available to other organisms.
a. Decomposer
b. Grazer
If we were allowed to fish in these waters, how would it affect the food chain? The dolphins in particula
Answer:
Things that would/could affect the dolphins:
Driving away food sourcesOverfishing would cause a lack of food sourcesOverfishing could make them along with other species compete for food/survivalAccidents involving dolphins with boats and fishing equipmentExplanation:
Hopefully I helped. IF SO CAN I HAVE BRANLIEST.
_______________ is the name for the process of clearing natural vegetation and replacing it with concrete and buildings.
The practice of removing natural vegetation and replacing it with concrete and structures is known as urbanization. This is the correct answer to fill in the blank.
What are the primary factors causing urbanization?Industrialization, commercialization, rural-urban migration, lifestyle changes, career opportunities, social advantages, etc. are the primary reasons of urbanization. The process of urbanization is when people move from rural to urban areas for a variety of reasons.
What results did urbanization produce?Urban areas can expand due to a rise in the population or because people move there. Urbanization frequently causes habitat loss, deforestation, and freshwater extraction from the environment, which can reduce biodiversity and change species ranges and interactions.
To learn more about natural vegetation visit:
brainly.com/question/26982038
#SPJ1
Which factors contribute to the way organisms grow and develop? Choose the three that apply. A. Genetics B. Size C. Response to stimuli D. Structures E. Access to resources
Answer:
a
Explanation:
The factors that are important for the growth of the organism are the genetics, the response to stimuli, and the access to resources that are present in options A, C, and E.
What are the factors needed for the growth of the organism?Organisms require certain conditions in order to grow, such as foods and nutrients; a source of energy and materials to build new cells and tissues, water, light, proper temperature, oxygen etc, and good health, as organisms that are diseased or injured may not be able to grow and function normally and after all, a suitable environment is needed that includes all these ,each organism has specific requirements for its habitat, such as the right temperature, humidity, and availability of resources and grow when they get it.
Hence, the factors that are important for the growth of the organism are the genetics, the response to stimuli, and the access to resources that are present in options A, C, and E.
Learn more about the factors needed for growth here.
https://brainly.com/question/5813644
#SPJ5
The product of an object's mass, how high it is, and the acceleration of gravity of the planet it's on define which term
A. Potential Energy
B. Work
C. Power
D. Kinetic Energy
Answer:
kinetic energy
Explanation:
Nitrogen-fixing bacteria making
nitrogen available for use by other
organisms to utilize is an example
of..
A. mutualism.
B. commensalism.
C. decomposition
The nitrogen fixation bacteria makes the nitrogen available for the plants directly into the soil. This is an example of mutualism, where both bacteria and organisms are benefited.
Most leguminous plants like peas, bans, and cloves have colonies of nitrogen fixation bacteria. These bacteria are found attached to the roots nodules and tend to fix the nitrogen. Through this, the bacteria gain sugar from the plant.Hence mutualism is the end product of the interaction. This option A is correct.
brainly.com/question/21040043.
When you exercise or sunbathe, you sweat. that sweat eventually evaporates. Why does this occur
Answer:
The sweat leaves your skin through tiny holes called pores. When the sweat hits the air, the air makes it evaporate (this means it turns from a liquid to a vapor). As the sweat evaporates off your skin, you cool down.
It is possible for some species in a food we’d to be a primary consumers and a secondary consumer at the same time?
1- true
2- false
A car increases its speed along a straight road from 20.0 km/h to 50.0 km/h in a time of 5.0 s.
What is the magnitude of the acceleration of the car?
O A 3.0 (km/h)/s
B. 6.0 (km/h)/s
C. 7.0 (km/h)/
D. 10.0 (km/h/s
whitch of the following nutrients is primarily used for building and repairing of demaged cells and tissues
Answer: protein ..i hope this helped!
Explanation: protein is a nutrient used to make and repair our body cells like blood and muscle cells.
Answer:
Explanation:
he is correct
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.
Anticodon
CCA
Codon
Amino Acid
RNA Pairing Rules
A ↔ U
G ↔ C
Answer:
For the tRNA anticodon CCA the corresponding codon is GGU, which codes for the amino acid Glycine (Gly).
Explanation:
Transfer RNA or tRNA is responsible for driving the right amino acid into protein synthesis, once the mRNA codon has been translated by the ribosome. It is for that reason that each mRNA codon must have a complementary tRNA anticodon.
The RNA pairing rules is that each nitrogenous base has a complementary base, so:
- 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: GlyAnswer:
For Anticodon it's: CCA
Codon it's: GGU
Amino Acid it's: Glycine (but when typing in the box for Amino Acid I typed in GGU and it was correct so that's the answer for Amino Acid.)
Hope this helps!
if a blue eyed offspring is formed from black eyes parents, what type of character is the blue eye dominant or recessive? expalin with the help of a chart
Answer:
If a blue-eyed offspring forms from black-eyed parents, the blue-eyed trait must be recessive.
Explanation:
The blue-eyed trait is the recessive one because otherwise it could not come from parents with black eyes. A recessive trait is only expressed when both alleles for that trait are the same, and can only come from parents with the same trait, or heterozygotes.
In this case, both parents must be heterozygous, i.e. carriers of the recessive allele. If black eyes is B and blue eyes is b, then the genotype of the parents would be:
♂ Bb♀ BbIn a Punnett square can be seen the crossing:
Bb X Bb
Alleles B b
B BB Bb
b Bb bb
Where the offspring could be:
Bb black eyes 50%.BB black eyes 25%bb blue eyes 25%Therefore, if blue eyes is the recessive trait, as if it were the dominant trait it could not be the product of black-eyed parents.
The study of a living being is called biology.
The correct answer is recessive genes or mutation.
The character in the living organism is due to the gene present in the body. The genes are present in a pair. The single gene is known as an allele. The two alleles are as follows:-
DominantRecessiveIn this question, the parents have a black color eye but the offspring has blue color eyes. This is due to recessive gene inheritance because this gene is dormant in their parent and shows its character in this generation.
The chances of this case are 1/4 out of total.
The mutation is also the reason for the blue eyes because the abnormal change beside the population is called a mutation.
Hence, the correct answer is Recessive and mutation.
For more information, refer to the link:-
https://brainly.com/question/14698383
Your collar bones are _____________ to the navel.
a. Lateral
b. Inferior
c. Superior
d. Medial
What two characteristics define an air mass?
Answer:
What two main characteristics are used to classify air masses? Temperature and humidity are two characteristics used to classify air masses.
Keeping track of what you earn, spend, and save are they key parts of a _____.
Drive-reduction theory states that external factors motivate individuals toward certain behaviors. true or false
Answer:
true
Explanation:
ED 2020
Answer:
The answer is false
Explanation:
ED 2021
How might an error during transcription affect the protein that is produced?
Answer:
the protein might be unable to function
A. AABb
B.AaBb
C.aaBb
D.AaBB
Answer:
C
Explanation:
Use Foyle method.
What Energy Transformations Occur Inside The Flashlight When It Is Turned On?
Answer:
When the flashlight is turned on, the chemical energy is first transformed into electrical energy and then into light energy. CHEMICAL bonds. It is released during a chemical reaction (change). by flowing electrons (negatively charged particles).
Explanation:
Hope this helps
Blood type is an example of
Answer:
Blood type is an example of ✔ codominance
Explanation:
Blood type is determined by the ✔ antigens on the blood cells.
✔ Antibodies attack foreign blood that does not contain the same antigens.
Blood type is an illustration of codominance.
What is blood type?Blood group also known as blood type refers to classification of blood on the basis of the absence and presence of antibodies and inherited antigenic components on the red blood cells surface. These antigens may be:
ProteinsCarbohydratesGlycolipidsGlycoproteinsThe blood type in humans is an example of codominance. In codominance, neither of the allele can inhibit the expression of the other allele. One of the example is the ABO blood group in humans. In this, both the alleles A and B are expressed.
Therefore, if a person is inheriting allele A from the mother and allele B from the father, he or she will have the blood type AB.
Thus, blood type is an example of codominance.
Find out more information about blood type here:
https://brainly.com/question/11333649
