Answer:
true
Explanation:
if you need explanation tell me :D
How do water's relative densities as a solid and a liquid differ from that of most other substances?
As you are walking home from studying at the library late one evening, you get startled by a strange sound behind you. This activates your sympathetic nervous system. What affect does this change have on stroke volume? Group of answer choices Stroke volume will increase due to an increase in contractility. Stroke volume will decrease due to reduced blood pressure. Stroke volume will increase due to increased blood pressure. Stroke volume decreases due to an increase in contractility. Stroke volume will increase due to a decrease in contractility.
Answer:
Stroke volume will increase due to an increase in contractility.
Explanation:
When the individual is going through a stressful situation, the sympathetic nervous system, in conjunction with the hypothalamic-pituitary-adrenal (HPA) system, sends signals to prepares the body for stressful situations.
The body gets ready to respond to stress by increasing heart biting frequency and strength, contractibility, blood pressure, stimulating respiration and dilating respiratory tracts.
Stroke volume refers to the blood volume ejected from the ventricles as a result of the heart contraction. As said before, stressful situations increase heart bitting frequency and strength, as well as contractibility. Contractibility also influences stroke volume.
Stroke volume is determined by the difference in values of the end-diastolic volume and the end-systolic volume → SV = EDV - ESV
Contractility is one of the main factors that influence stroke volume, by affecting the end-systolic volume. It does not alter the diastolic volume. Consequently, there is an increase in stroke volume.
The central factor of systolic ejection is the myocardium sarcomere contractibility. The sarcomere´s contractile capability generates strength to become shorter after myosin heads join to the uncovered actin-binding points forming cross-bridges.
When water evaporates,
the particles
A stop moving
B. move faster
C. move slower.
D. explode.
The ligand binding domain of a protein must be inserted in
Dehydration synthesis is involved in the synthesis of all the following except
1. DNA
? proteins.
priysaccharides.
4. lipids:
5. monosaccharides.
Answer:
Please dont delete
Explanation:
Hello. I am sorry that I can not answer your question but I am doing this so I can get answers of my own. I appreciate your understanding and I hope you get your answer soon. Good luck!
how contractile vacuole function in osmoregulation
Answer: A contractile vacuole (CV) is an organelle, or sub-cellular structure, that is involved in osmoregulation and waste removal. ... In freshwater environments, the concentration of solutes inside the cell is higher than outside the cell. Under these conditions, water flows from the environment into the cell by osmosis. The contractile vacuole (CV) complex is an osmoregulatory organelle of free-living amoebae and protozoa, which controls the intracellular water balance by accumulating and expelling excess water out of the cell, allowing cells to survive under hypotonic stress as in pond water.
Explanation:
what is the main point of the villi
Answer:
The villi of the small intestine project into the intestinal cavity, greatly increasing the surface area for food absorption and adding digestive secretions. The villi number about 10 to 40 per square millimetre (6,000 to 25,000 per square inch) of tissue.
NO LINKS Roundworms use the_____ route to move between two dogs.
Answer:
Feces is your answer. AKA poop.
Explanation:
Storz (2007) describes an adaptive response to low partial pressure of oxygen in an environment at high elevation. Describe three other environmental conditions besides high elevation that might result in adaptation to hypoxia. List an organism found in each of the described environmental conditions that would be predicted to exhibit adaptive responses to low partial pressure of oxygen.
Answer:
Enhanced ventilatory abilities, enhanced percentage removal of O2 from the ventilatory stream and large gill surface areas.
Explanation:
Enhanced ventilatory abilities, enhanced percentage removal of O2 from the ventilatory stream and large gill surface areas are the three other environmental conditions besides high elevation that might result in adaptation to hypoxia. These abilities will increase the resistance to lower oxygen levels in the surrounding environment. Fish is the organism which used these types of adaptation for their survival in the surrounding of low oxygen levels.
Which of the following best describes why the two organisms you chose are closely related to each other using evidence from the chart?
PlS HELP 30 POINTS FOR BRAINLIEST!!!!!!!!!!!!!!!!!!
Answer:
It's a little difficult to see the difference between the finch 1 and finch 2 population lines, but their trends should match those of the food. This answer is assuming the finch 1 population aligns with the seeds line and the finch two population lines up with the fruit line: The finch 1 population has a beak adapted to eating seeds and the finch 2 population has a beak better adapted to eating fruit
Explanation:
Since we are given data for both the food source and the finch population, the answer will most likely reflect that. Therefore eliminating choices A (disease) and C (feathers). Again, this answer is assuming the finch 1 population aligns with the seeds line and the finch two population lines up with the fruit line. The lines for the finch population will match with the availability of food, so less seeds mean less finch 1 and when the amount of seeds rise up you can see the population of finch 1 also rises.
What negative effect occurs when there is a decrease in air quality?
Answer:
d
Explanation:
Pls help asap
Problem
A car sells for \$5000$5000dollar sign, 5000 and loses \dfrac{1}{10}
10
1
start fraction, 1, divided by, 10, end fraction of its value each year.
Write a function that gives the car's value, V(t)V(t)V, left parenthesis, t, right parenthesis, ttt years after it is sold.
Answer: V(t)=5000(9/10)^t
Explanation:
If the car loses 1/10 of its value each year, that means 9/10 of the value remains each year.
So each year, the car's value is multiplied by a factor of 9/10 or 0.9
If we start with the initial value, $5000 and keep multiplying by 9/10 his function gives us the car's value t years from now:
Sex is to as gender is to
A. psychological and sociocultural ; biological
B. attraction ; identity
C. biological ; psychological and sociocultural
D. identity ; attraction
Answer:it could be C or maybe D I would more say C
Explanation:
Answer:
psychologicaland socialcultrural.. biological
Please help I really need it pleaseeee
Answer:
Lizards and birds produce amniotic eggs.
Sharks were the first animals to have jaws.
Ray-finned fish and sharks are similar in that they both have paired appendages and jaws.
Birds are more closely related to crocodiles than they are mammals.
Explanation:
When a novel trait is labeled on a cladogram only the animals depicted after the label exhibit the trait.
Organisms that are located on the same clade (branch) are closely related.
The following case study is a paraphrase from "Good Clinical Practice. Standard Operating Procedures for Clinical Researchers" (Kolman, J., Meng, P. and Scott, G. editors; John Wiley and Sons publishers, 1998):
“While a study subject and a relative were walking in town one day during the summer, a hanging flower basket fell on a study subjects head, resulting in the study subject falling down and becoming unconscious. The subject’s relative called for an ambulance. On arrival at a local hospital’s Emergency Department, in which the subject regained consciousness but could not recall the event, a x-ray revealed a fractured skull. The subject’s consciousness level at this point was deteriorating and after further tests a subdural hematoma was diagnosed, which was evacuated under general anesthesia. Postoperative recovery was uneventful and progressing well until day four, when the patient developed acute dyspnea (shortness of breath) at rest during visiting time. An emergency lung scan was performed that confirmed a diagnosis of pulmonary embolism. The study subject was anticoagulated and was eventually discharged from the hospital”
1. What is/are the AE/s in the case study?
2. Are there any AEs that are "serious"? If "yes", list them and state why they are serious.
3. What are your thoughts about the AE(s) being related to the study drug (NOTE: we do not know whether the subject is on active drug or placebo)?
The diagram represents a taxonomic tree showing the possible evolution of six species of finches.
The most likely explanation for the branching pattern seen in the circled region labeled X is that:
A.
environmental changes resulted in extinction
B.
speciation occurred as a result of inbreeding
C.
no speciation occurred during this time
D.
environmental changes influenced speciation
Answer:
Option B
Explanation:
As we can see in the figure, three species of the finches in circle lie on the same main branch as three sub branches. This is an example of speciation caused by interbreeding of species which led to removal of deleterious genes and then caused emergence of three species adaptable to the existing environmental conditions.
Hence, option B is correct
Although Domain Bacteria is very diverse, bacteria do share some basic characteristics. Which of the following are some of those shared characteristics?
Question 4 options:
Bacteria are surrounded by a a strong cell wall made of a molecule called peptidoglycan.
Bacteria are eukaryotes.
Bacteria are prokaryotes.
Their DNA is one single, circular chromosome
Answer:
They Don't have definet nucleus (eukaryotes )
They have a SINGLE DNA,circular chromosome
Explanation:
All bacteria share common basic characteristics.
Which population is most likely to survive in the event of a new disease?
A.
a very diverse population
B.
a somewhat diverse population
C.
a population with little diversity
D.
a population with no variation
Answer:
A
Explanation:
I don't know if this is the answer but I think it's A because more diversity means more opinions and more opinions means more solutions to the problem at hand
what process do plants release water into the air
Answer:
transportationnnnnnnnnnnnnnnnnnn
Name the major nitrogenous waste product in nile perch
Answer:
Any metabolic waste product that contains nitrogen. Urea and uric acid are the most common nitrogenous waste products in terrestrial animals; freshwater fish excrete ammonia and marine fish excrete both urea and trimethylamine oxide.
Viroids’ largest impact is on ________.
Answer:
the agriculture indus
Correct answer: the agriculture indus
The two DNA bases that are pyrimidines are:
Answer:
cytosine and thymine / C and T
PLEASE HELPPP question and choices in the picture below
Answer:
B
Explanation:
2. What is a characteristic of animals that use chemicals for defense?
A. They rely on Mullerian mimicry for defense.
B. They rarely use camouflage as a defense.
C. They usually use their speed for defense.
D. They rely on Batesian mimicry for defense.
They rely on Mullerian mimicry for defense.
The insect mimic the other insect which is toxic to the predator.By this method they increase there chance of survival.What is mimicry?It is the close resemblance, in color, form, or behavior, of one organism to another or to some object in its environment, as of some insects to the leaves or twigs of plants.It serves to disguise an organism from a predator or prey.Hence, A option is correct.
To know more about mimicry here
https://brainly.com/question/13046649
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1. A food chain is one part of a food web. Which list is part of the food web shown above?
A diatoms-fish-leopard-seal-orca
B diatomskrill--fish-great white
shark-orca
C copepodsdiatomskrill--fish-
leopard-seal-orca
Dorca--leopard-seal--squid-copepods- diatoms
Help pls will get brainliest
Which of the following describes hygiene?
A. Practices that prevent disease
B. Strategies to protect patient information
C. Steps for communicating effectively
D. Methods for properly lifting patients
SUBMIT
It’s A
Answer:
A
Explanation:
hygiene is done by oneself
Answer: A. Practices that prevent disease
Explanation: took the quiz
Which situation is an example of altruistic behavior?(1 point)
A) A child steals an apple.
B) A child shares an apple.
C) A child eats an apple.
D) A child throws away an apple.
Answer:
B. A child share an apple
Explanation:
Im sorry if this is wrong
A child who shares an apple shows altruistic behavior.
What is altruistic behavior?
Evolutionary biologists determined that an animal's behaviors are altruistic when they benefit other individuals, even to the potential detriment of themselves. Bees, ants, and termites are examples of altruistic behavior.Thus, we can conclude that in option B a child who shares an apple shows altruistic behavior.
you can learn more about altruistic behavior here:
https://brainly.com/question/11287458
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Scientists can create transgenic organisms by inserting foreign DNA randomly into the chromosomes of a host. A scientist might do this in order to express genes carried in the foreign DNA and in this case the foreign DNA is often engineered to include insulator sequences at the ends of the foreign sequence. Why insulators would be useful in this context
Answer:
Insulator sequences serve as a boundary between two genes. In this case, the insulator sequence is a boundary between the organism's normal DNA and the inserted foreign DNA. The insulator will protect the inserted DNA from any regulatory effects that may come from the neighboring gene.
which of the following is NOT a basic need of plants in order to live
a.water
b.oxygen
c.sunlight
d.carbon dioxide
just say a b c or d is the answer ill give brainlist and ten points