Answer:
1/8(12.5) if the answer is correct plz mark me as brainliest.
Which of the cardiac cell characteristics describes the
ability to initiate an electrical impulse?
Answer:
The correct answer is: automaticity.
Explanation:
Cardiac muscle has several properties. These properties are: automaticity (given by the pacemaker cells), conductivity (meaning that each cardiac cell can transmit the electrical impulse to the next cardiac cells), contractility (like other types of muscles, cardiac muscle cells can contract), and irritability (each cell can contract on its own without the external stimuli).
Cardiac pacemaker cells are the ones with the capacity to initiate the electrical impulse by creating rhythmic impulses called action potentials, and thus directly regulating heart rate.
Pacemaker cells are located in the sinoatrial (SA) node, in the upper portion of the right atrial wall. In these cells, depolarization of the cardiac muscle begins, and the electrical impulse generated by it is transmitted to the atrioventricular (AV) node, the His bundle and then the Purkinje fibers - this order of events is necessary for the correct contraction of the heart to occur. All of these structures are part of the Conduction System of the heart.
14.
(GT.03)
Which of these best matches a source of information with its most reliable use? (2 points)
cladogram → date events which occurred in Earth's past
cladogram → study the evolution of organisms based on adaptations
fossil records → compare the evolution of completely soft-bodied organisms
fossil records → study the behavior of primitive animals in extreme weather conditions
Answer:
petrified fossils → date sedimentary rocks
does tomato have thick or thin exocarp?
sexually produced offspring are indentical to their parent . true or false ?
Brain researchers have found wider surface fissures, enlarged ventricles, and atrophy of the brain areas for regulating motivation, emotion, attention, actions, and perception in persons suffering from:________
a. bipolar disorder.
b. schizophrenia.
c. multiple personalities.
d. conversion disorders.
Answer:
B. Schizophrenia
Explanation:
yes
who do study edexcell certificate level? and can help be physics,chemistry and biology exam
I have done GCSE sciences and also applied science a level so I could probably help you :)
Which quantity does a light year measure
Answer:
distance = 9.46 trillion kilometers
Explanation:
Light years measure distance and is a unit that equals the distance light travels through space in one year on Earth (365 days) and is used as way to measure extremely vast distances in outer space. It equals 9.46 trillion kilometers.
The following statement is incorrect as stated "Pesticides create pesticide resistance in mosquitoes." Rewrite this sentence so that it is a more accurate statement of what actually occurs when pesticides are used. Why is this concept important to know in trying to control outbreaks of mosquito transmitted diseases such as eastern equine encephalitis (also known as Triple E)?
Answer:
Mosquitoes usually become resistant to pyrethroids through the mutation of a sodium channel gene that controls the movement of ions across cell membranes. Mutations in a single gene are enough to make mosquitoes almost completely resistant to the level of pyrethroids used in insecticides.
1. The large cell is called secondary oocyte and the small one is called _______.
2. What parts of organ that located at the right side of upper abdomen?
3. It is yellowish gland about 18cm long and 4 cm wide.
4. The ____________ provides the oxygen necessary for cells to metabolize.
5. The _____________ moves the oxygen around the body and to the cells.
6. It a specialized sub-unit within a cell that has a specific function such as; mitochondrion, golgi bodies, lysosome, vacuole, etc.
7. _________ are the tiny building blocks of our tissues and organs.
8. In what process where sex cells undergo meiosis to form sperm cells (spermatogenesis) in male and egg cells (oogenesis) in female.
9. This is a production of sperm by the process of meiosis.
10. It is process of producing egg cells by means of meiosis.
If a diploid cell has 20 chromosomes, how many sister chromatids will be present
during PROPHASE of MITOSIS?
Answer:
92 chromatids
Explanation:
During phosphate, the nuclear envelope of the cell (which is where the 92 chromatids are contained) begins to break down. The centrioles, which are the only present in animal cells, separate and each moves to an opposite end of the cell
Provide details about Meiosis.
What fraction of the progeny of the cross BbTt x BbTt will have black fur and long tails?
A) 0/16
B) 1/16
C) 3/16
D) 9/16
E) 16/16
Answer:
plzzzz upload a full picture
The genetic code is defined degenerate or even redundant because:
A. the same codon codes for different amino acids
B. an amino acid can be encoded by several codons
C is different in all organisms, except in monozygotic twins
D. the sequence of codons is not separated by intervals, but is continuous
E. the structure of the genes is constantly mutating
Answer:
B. an amino acid can be encoded by several codons
Explanation:
The genetic code refers to the set of rules that govern how the four nitrogenous bases (A,U,G,C) is arranged to form amino acids. The genetic code is a collection of all the CODONS formed. There are different characteristics of the genetic code and one of them is its REDUNDANCY.
Since there are 4 nitrogenous bases combined in three's to form a codon i.e. 4³, there are 64 possible codons that could form 20 maximum amino acids. This means that there are more codons in relation to amino acids. Hence, more than one codon can encode an amino acid, and this is referred to as REDUNDANCY of the genetic code.
For example, LEUCINE amino acid is encoded by 6 codons as follows: UUA, UUG, CUU, CUC, CUA, CUG.
How does water relate to the ability of a living thing to generate usuable energy?
Answer:
Without the proper balance of water, chemical reactions in cells could not take place.
Explanation: :)
At a birthday party, a teen decides to inhale some of the helium from a nearby balloon using his mouth. Before the helium gas reaches his right and left lungs, through which order of structures will it flow?
A. Oral cavity to the oropharynx to the trachea to the right and left main bronchi.
B. Oral cavity to the trachea to the trachea to the nasopharynx to the right and left main bronchi.
C. Oral cavity to the right and left main bronchi to the trachea to the oropharynx.
D. Oral cavity to the trachea to the larynx to the right and left main bronchi.
E. Oral cavity to the nasopharynx to the trachea to the right and left main bronchi.
Answer:
D. Oral cavity to the trachea to the larynx to the right and left main bronchi.
Explanation:
The respiratory system may be a system consisting of specific organs and structures used for gas exchange in animals and plants.
What is the process of respiration?We have a pair of external nostrils opening out above the upper lips. It results in a nasal chamber through the nasal passage. The nasal chamber opens into the pharynx, some of which are the common passage for food and air. The pharynx opens through the larynx region into the trachea.Trachea is a straight tube extending up to the mid-thoracic cavity, which divides at the extent of the 5th thoracic vertebra into a right and left primary bronchi. Each terminal bronchiole gives rise to a variety of very thin, irregular-walled, and vascularized bag-like structures called alveoli. The branching network of bronchi, bronchioles, and alveoli comprise the lung.
Thus, we can conclude that the correct option is (e).
The oral cavity to the nasopharynx to the trachea to the right and left main bronchi.
You can learn more about the respiratory system here:
https://brainly.com/question/2619922
#SPJ2
Which genotype would give you a wild type phenotype?
Answer:
C
Explanation:
You are carrying a case of 24 bottles of water up the stairs to your third-story apartment. What type of contraction are the muscles in your arms experiencing
Answer:
Concentric contraction.
Explanation:
Concentric contraction is a type of contraction that the muscles in arms experiencing when an individual lifting 24 bottles of water up the stairs. A concentric contraction is a type of muscle activation that creates tension on your muscle as it shortens. As your muscle shortens, it produces enough force to move an object in the upward direction. In weight training we can easily see concentric movement.
Given the latitudinal differences in sunlight intensity, how might you expect the carrying capacity of a plant species found at the equator to compare with that of a plant species found at high latitudes? Explain your answer
Answer:
The carrying capacity of a plant species expect in the equator is higher as compared to the carrying capacity at high Latitudes. This is due to the equator the plants have more light available, so the ecosystem can give them better conditions to survive and reproduce. Remembering that the carrying capacity is the largest population size an ecosystem can support without degrading itself, in the equator would be higher as it can have better conditions of light, so they would survive and reproduce more and the largest population the ecosystem could support would be higher.
An older woman is transported to the hospital on Thanksgiving Day. While visiting with family for the holiday, the woman fell out of her chair and was unresponsive to her family. Upon arrival to the emergency department, the family reports that the woman lives independently. Before her current state, she recognized family members and was speaking normally. She begins to arouse, and her family notes that she seems unaware of her surroundings and does not respond to questions.
A defect of recognition may be tactile, visual, or auditory. These are known as:___________
Answer:
Agnosia typically is defined as the inability to recognize sensory stimuli. Agnosia presents as a defect of one particular sensory channel, such as visual, auditory, or tactile.
Option :
Bacteriacial cell
Plant cell
Animal cell
All of these are correct answer
Answer:
yes
Explanation:
bcoz it helps in every way
What is the term that refers to a deep divide between tissues of the brain?
Gyrus
fissure
sulcus
fusior
Answer:
fissure!
Explanation:
Help me out with this again, pretty please?
(2nd time)
I need explanation for your answers, even though it's multiple choices, I still need your explanation for it.
DUE TOMORROW!
If your answer is NONSENSE it will be deleted as soon as possible!
But if your answer is CORRECT, HELPFUL, HAS AN EXPLANATION, I'll chose your answer as the BRAINLIEST ANSWER!
I am stuck please help !!!!!!
State three ways of increasing the life-span of cut flowers
Answer:
Clean your vase thoroughly, Keep flowers away from fruit, Flower Food and Water
Explanation:
The predominant forms of actin inside a cell are ATP-G-actin and ADP-F actin. What would be the consequence for actin filament assembly/disassembly if a mutation prevented actin's ability to bind ATP
Answer:
If actin is unable to bind to the ATP molecule, it will not be able to assemble into its two dominant forms.
Explanation:
As shown in the question above, the two predominant forms of actin are ATP-G-actin and ADP-F actin. As we can see, the formation of these two molecules involves the presence of an ATP molecule, in which case, the concentration of actin inside an organism depends totally on the capacity of the actin to be able to bind to an ATP molecule. If there is a mutation that prevents this binding from occurring, actin will not be able to form its two dominant forms, which will harm the presence of actin in the body.
What is the purpose of a geological time scale ?
It used to predict natural disaters throughout Earth’s history.
It is used to present the correct sequence of events in the Earth’s history.
It is used to determine the absolute dates in years for different periods.
It used to create a naming system for flora and fauna.
Answer: B. It is used to present the correct sequence of events in the Earth’s history.
Explanation: On Edge!!!! :)
Answer:bbbbb
Explanation:
qcw3ec
Consider the following statements:
1. RNA is ribonucleic acid.
2. RNA is used for information transport (known as mRNA). Choose the correct answer from the given codes:
A Only 1
B Only 2
C Both
D Neither 1 nor 2
E None of the above
Answer:
Only A
Explanation:
RNA is used for storing and transporting information through mostly virus only..
Pls help thank you
A group of geologists is about to start excavating a new area for fossils. The area they are working in is the side of a cliff. Describe two pieces of information they will most likely be able to discover about the fossils they will find.
Answer:
Forms of fossils and there arrangement with layer of rock.
Explanation:
The seashore is a significant place for the depositional work of waves and it's also one of the significant places for the erosion and weathering of rocks. The presence of sedimentary rocks along the cliffs are essential for the discovery of fossils of plants and animals. Fossils of shells and other creatures that were of marine origin are mostly discovered near excavation sites. Fossil helps to prove the age of rocks and strata.Lactase is an enzyme that is produced in the lining of the intestines. This enzyme helps the body speed up the
breakdown of carbohydrates that are found in dairy products, such as milk, yogurt, and cheese.
Which general function does lactase perform?
Answer:
Regulation of cell processes
Explanation:
Lactase is an enzyme that helps in the breaking down of disaccharide sugar, lactose, found in many foods. It does it by converting the lactose into its component reducing sugars - glucose and galactose. This enzyme is produced by some special cells lining the intestinal walls of humans and forms a kind of chemical barrier known as brush border where foods must pass through before being absorbed. By so doing, foods are screened for the presence of lactose and any lactose is broken down before the foods are given a pass.
Which of these is a benefit of fish farming?
A. It can deplete native fish populations
B. It can restock lakes depleted by recreational fishing
C. It can pollute natural bodies of water
D. It can pass diseases to native fish populations
Answer:
The answer to this would be B
Explanation:
B:It can restock lakes depleted by recreational fishing
