Answer:
All eukaryotic cells share a common ancestor that arose just once in four billion years of evolution.
Life science- 12 points Answer in at least 50 mins pls
Which of these is an example of commensalism? from the following
- Lion hunts an antelope
- Hummingbird drinks nectar while pollinating flowers
- Wolf and fox fight for the same prey
- Barnacles attach to a whale in the ocean
i believe its the last just making sure
Which of these describes one way that the human nervous system maintains a constant body temperature when the external temperature is cold?
A. The Nervous system increases perspiration
B. The nervous system causes digestion to speed up
C. The nervous system causes bloods vessels to construct
D.The nervous system triggers the flight-or-flight response
Answer:
A
Explanation:
Nerves trigger sweat glands to release fluid that evaporates and cools the skin. Conversely, a drop in core temperature makes blood vessels constrict to conserve heat. The nervous system also triggers muscles to shiver to generate heat and warm the body.Apr 15, 2018
The nervous system causes blood vessels to constrict. Therefore, option (C) is correct.
What is nervous system?When the external temperature is cold, the human nervous system works to maintain a constant body temperature through a process called thermoregulation. One way this is achieved is by causing blood vessels near the skin to constrict, reducing blood flow to the skin and helping to retain heat within the body's core. This response is known as vasoconstriction.
Vasoconstriction is controlled by the sympathetic nervous system, which is part of the autonomic nervous system. This system is responsible for controlling involuntary bodily functions, including heart rate, blood pressure, and body temperature. When the body's core temperature drops, the sympathetic nervous system activates and causes the blood vessels to constrict, helping to maintain a constant internal temperature.
Increasing perspiration (A) can help to cool the body down in hot conditions, but it is not a mechanism for maintaining body temperature in cold conditions. Digestion speeding up (B) and the flight-or-flight response (D) are not directly related to temperature regulation.
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During middle childhood, the bones of the body ________. stop growing shorten and narrow lengthen and broaden firmly attach to ligaments
During middle childhood, the bones of the body lengthen and broaden.
What happen to the bones of the chidren?The bones of the body lengthen and broaden during childhood. The ligaments are not yet firmly attached to bones. This non-attachment with increasing muscle strength, gives children unusual flexibility of movement.
So we can conclude that during middle childhood, the bones of the body lengthen and broaden.
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Match each lung disorder to its description.
Pneumonia - Infection causing fluid to build up inside the lungs
C o v i d - Newly discovered respiratory virus
Mesothelioma - Cancer of the outer lung cells frequently caused by asbestos exposure
Asthma - Constriction of the airways, commonly treated with a rescue inhaler
Emphysema - destruction of the walls of the a lv eoli
P neumotho rax - reduced lung volume due to air or fluid collecting around the outside of the lung.
Hope this helps! :)
Which of the following statements about ribs is NOT true?
a) false ribs are indirectly attached to the sternum
b) ribs are considered cartilage
c) ribs are attached to the thoracic vertebrae
d) floating ribs are not attached to the sternum
Answer:
A Trust me ik my science
Which statement correctly describes a chemical reaction?
O Reactants come out of a reaction.
O Energy is always released.
O Bonds between atoms break and reform.
O Products go into a reaction.
Answer:
C. Bonds between atoms break and reform.
Explanation:
A chemical reaction takes place when bonds between atoms of the reactants break and new bonds form in the product.
Which of the following genotypes represents a HETEROZYGOUS parent? *
10 points
HH
Hh
hh
Answer:
Hh
Explanation:
Hetero means different. Hh is different, the others are the same.
True or False: If you go through the design cycle correctly, you only need to go through the cycle once.
If you go through the design cycle correctly, you only need to go through the cycle once because there is no need for passing through the same cycle.
How many times the designers go through the design?Designers and engineer only go through the design process once when designing a product.
So we can conclude that you only need to go through the cycle once if passing through correctly because there is no need for passing through the same cycle.
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I need help with this question (don’t need help with the evidence part lol)
Answer:
The cells divide to grow the organism, which can result in mutations in DNA and different traits, making an organism more complex
wouldn't gliding be faster lol
I know I have a lot of questions today, but I would love help
Answer:
greater than
Explanation:
Answer:
greater than is the answer to this problem. hop this help you
Auxins cause elongation by Select one: a. triggering proton release. b. indirectly activating expansins. c. indirectly increasing plasticity. d. All of these e. None of these
None of these is the correct answer.
What is the role of Auxin?Auxin is a growth hormone that is responsible for the elongation of stem and coleoptile cells by increasing wall loosening through cleavage of these bonds so we can conclude that Auxin is responsible for elongation due to wall loosening.
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which of the following is an example of static stretching exercise
Answer: These are the options.
A. Calf
B. Chest
C. Upper Back
D. March and Reach
Option C is correct
Upper back stretch.
Explanation:
Upper back stretch is an example of static stretch because it entails placing your muscles in a position where it can be stretch or extended for a period of time because it lengthen the stride and also improve flexibility of muscles.
To do upper back stretch, first stand talk, let the feet be very wide even than the shoulder, let the knees be apart and bent. Interlock your fingers, stretch your hands from your chest and make sure your upper back relax.
Even though a population in true hardy-weinberg equilibrium cannot exist, how can using the equation be useful?.
The Hardy-Weinberg equilibrium can be useful to discover the presence of evolutionary forces acting on a given population. It is used in population genetics.
What is the Hardy-Weinberg equilibrium?The Hardy-Weinberg equilibrium is a theory stat states that genotypic and allele frequencies will remain constant in a population in absence of different evolutionary forces.
These evolutionary forces include mutation, natural selection, migration and sample size.
The Hardy-Weinberg equilibrium may result useful for finding the causes that originated a change in allele and genotypic frequencies in a given population.
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The force of gravity is measured in units is called________ (newtons/watts)
Answer:
The force of gravity is measured in units called ____________ (Newtons/watts).
Explanation:
Answer:
Newton's.
Explanation:
Watts are for light. Newton's is how much force is being put on gravity. Watts are measured in brightness, or amount of light energy
This cell organelle helps organisms maintain homeostasis by controlling what substances may enter and leave the cells
im sorry but i got screwed over
A liquid thermometer and an electronic thermometer are both properly placed in the same liquid. The liquid thermometer shows 53.4 degrees Celsius and the electronic thermometer shows 58.2 degrees Celsius. Which could best explain why they show different readings?
Answer:
The correct answer would be - electronic thermometer was not calibrated correctly
Explanation:
Every electronic equipment or instrument like an electronic thermometer, that measures something needs to be calibrated with a standard measurement or reference value to a new measuring device to establish a relationship.
Liquid thermometer measures based on the liquid's actual physical properties, that are present inside it so, calibration is not required.
Thus, the electronic thermometer was not calibrated correctly.
supposed the primary producers in the energy pyramid shown contain 76500 kj of energy. how much would be available for the organisms on the tertiary level ?
Answer:
76.5Kj
Explanation:
A food chain consists of different trophic levels of organisms ranging from the PRODUCERS to the TERTIARY CONSUMERS. According to the pyramid of energy, only about 10% of energy is available for use for the next trophic level as majority of the energy (about 90%) is lost as heat.
Hence, if the primary producers in the energy pyramid contains 76500kJ of energy, the following energy would be available for each trophic level.
Primary producers: 76500kJ
- 10% of energy will be available to the primary consumer = 10/100 × 76500 = 7650kJ
- 10% of energy (7650kJ) will be available to the secondary consumer = 10/100 × 7650 = 765kJ
- 10% of energy (765kJ) will be available to the tertiary consumer = 10/100 × 765 = 76.5kJ
Hence, 76.5kJ of energy will be available for organisms at the tertiary level.
Which word describes a type of tissue that is responsible for the transport of water and nutrients throughout a plant?.
What method is being used when the roads are being watered?
Answer:
handy mandy
Explanation:
Answer:
reduced slopes, rubber membrane and a water tube
Explanation:
Beans, peaches, and tomatoes are all in the same group of plants. What do these plants have in common?
Answer:
they bear flowers and seeds
Explanation:
Please help!! It needs to be done by today, answer all 4 questions.
1. What technology makes up the transducer?
a. A phased array
b. An x-ray
c. A PET scan
d. A laser
2. How is the signal from the transducer converted in to an image?
a. The signal is passed through several glass chambers
b. The transducer creates the image
c. A computer converts the signal into an image
d. A technician listens to the feedback and produces an image
3. How does tissue density compare to the low density object in the gizmo?
a. It is slightly less dense
b. It is much more dense
c. It is slightly more dense
d. It has the same density
4. How do very high density objects appear in an ultrasound?
a. As black objects
c. As light gray objects
b. As dark gray objects
d. As white objects
The set of questions is about a Transducer, how it works, and what it may be used for.
What technology makes up the transducer?The technology that makes up the transducer is a Phased Array (Option A).
How is the signal from the transducer converted into an image?
The signal from the transducer is converted into an image by the transducer (Option B). This process is called transduction.
How does tissue density compare to the low-density object in the gizmo?
Tissue density compares to the low-density object in the gizmo in that it is slightly denser. (Option C).
How do very high-density objects appear in an ultrasound?
High-density objects of body parts give off a very white or bright appearance on the ultrasound. (Option D).
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Which process is shown in the image?
A. Passive transport
B. Endocytosis
C. Exocytosis
D. Active Transport
Answer:
Explanation:
Endocytosis
The process shown in the image is of Endocytosis. It is a type of cellular transport through which different substances enters the cell. Thus, the correct option is B.
What is Endocytosis?
Endocytosis is a process during which substances are brought inside the cell. The materials which are to be internalized are first surrounded by the plasma membrane. The plasma membrane in-folds across the substances to form a vesicle.
The vesicle formed by the in-folding of the plasma membrane then fuses with the membrane and buds off into the cell. Thus, the substance are delivered inside the cell.
Endocytosis is of two types- pinocytosis (cell drinking) and phagocytosis (cell eating). Examples of endocytosis includes uptake of cholesterol-bound low density lipoproteins, and recycling of iron-bound transferrin, etc.
Therefore, the correct option is B.
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How are amino acids assembled during translation? explain the process of transcription
Answer:
During translation,ribosomal subunits assemble together like a sandwhich on the strand of mrna where they proceed to attract trna molecules tethered to amino acids a long chain of amino acids emerges as ribosome decodes the mrna sequence into polypepide or a new protein.
Transcription, the synthesis of RNA from DNA. Genetic information flows from DNA into protein, the substance that gives an organism its form. This flow of information occurs through the sequential processes of transcription (DNA to RNA) and translation (RNA to protein).
Answer:
Amino acid leads through a chain protein that makes its way into the Ribosome-(in the large subunit)
Explanation:
Check your understanding. What did you include in your response? Check all that apply.
mRNA attaches to the ribosome.
tRNA molecules transport amino acids to the ribosome.
Anti-codons and codons match up and form complementary base pairs.
Peptide bonds form between adjacent amino acids to form the protein.
Just pick all of them xD its not a wrong or right question
What did Antonie van Leeuwenhoek observe, and how did it impact the development of the cell theory?
Answer:
He was the first to observe bacteria and protozoa. His researches on lower animals refuted the doctrine of spontaneous generation, and his observations helped lay the foundations for the sciences of bacteriology and protozoology.
Explanation:
SOMEONE HELP IM NOT SURE WITH MY ANSWER
What condition can disrupt the cycles in an ecosytem?
a. clean environment
b. food and water
c. pollution
d. reforestation
Answer:
i think
option C
pollutionIt's option C.
Since all other options are beneficial for our environment
who is sonu sharma in india
Sonu Sharma is the founder of DYNAMIC INDIA GROUP (INDIA). An Author, Educator, Business Consultant and a successful Entrepreneur, he is a much sought-after speaker. Today he is one of the Youngest Inspirational Speaker in India.
Answer:
Sonu Sharma is founder of dynamic India group
and today he is one of Youngest inspirational Speaker in India.
Explanation:
Hope this help.
What are the two chemical reactants and the two chemical products of
cellular respiration?.
Reactants of cellular respiration are glucose and oxygen and the products are carbon dioxide ATP and water
What is technology?
A.) A way to apply science to solve problems
B.) A way to convince people
C.) A political idea
D.) A type of scientific experiment
Answer:
A)
Explanation:
Technology isn’t a political idea, a scientific experiment or way to convince people, it’s a way to apply science to solve problems. For example guns are used to kill animals and people.
Problem: You need to kill people or hunt animals better
Solution: Invent this thing that shoots fast deadly bullets.
That’s technology.
A cow's diet consists of grasses and grains. They do not eat other animals to survive. What kind of an animal is a cow? (A. carnivore) (B. decomposer) (C. herbivore) (D. omnivore)
Answer:
C. Herbivore
Explanation:
Answer:
C. herbivore
Explanation:
A herbivore is an organism that eats plants such as grasses and grains. A carnivore eats other animals to survive so its not a carnivore. An omnivore eats both like people so since omnivores also eat meat, it's not that either. And lastly, A decomposer breaks down organic material such as mushrooms. Therefore, a cow is a herbivore.
Fish lice live on host fish as a parasite. The fish lice feed on the blood and other fluids in
the fish. What is the likely outcome for the consuming parasite living on a host?
A the host eats the parasite
B the parasite dies and the host lives
Cthe parasite and the host live symbiotically
D the host dies and the parasite finds another host
Answer:
D
Explanation:
It attaches to its host, usually a fish, via its suction cups, pierces the skin with its sharp stylet, and feeds on blood. It may live in the gills.