The conduction system contains pacemaker cells, nodes, the Purkinje fibers, and the bundle of His.
What is the conduction system of the heart?The conduction system of the heart refers to the the system of cells and fibers which enables conduction of nerve impulse which enables the contraction of the heart.
The conduction system of the heart consists of:
Sinoatrial nodeAtrioventricular nodeAtrioventricular bundle (bundle of His)Purkinje fibersTherefore, the conduction system of the heart coordinates the contraction of the heart.
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What is cladistics?
OA. The comparison of species based on common behavioral
characteristics
B. The comparison of species based on their geographic range
C. The comparison of species based on the presence or absence of
ancestral traits
D. The comparison of species based on common physical
characteristics
The comparison of species based on common physical characteristics Thus, the correct option is D.
What is cladistics?Cladistics is a method of biological taxonomy that organizes taxa in a branching hierarchy so that all members of a given taxon share the same ancestors and defines taxa uniquely by shared traits not present in ancestral groupings.
Clades, which are collections of organisms made up of an ancestor species and its offspring, are also identified through cladistics.
A cladogram only displays one probable phylogeny for a collection of organisms. It can shed light on the process of evolution. A cladogram should not be viewed as a representation of genuine evolutionary processes, though. It may or may not depict what actually occurred. It merely illustrates what might have occurred.
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What molecule is the final electron acceptor in the Electron Transport Chain?
The final electron-accepting molecule in the electron transport chain is oxygen.
Role of oxygen in the electron transport chainOxygen mainly acts as an electron acceptor in the electron transport chain. More specifically, it acts as the final electron acceptor to ensure that oxidative phosphorylation takes place.
Without this final electron acceptor, the electron transport chain will not be able to complete the cycle, and energy molecules in the form of ATP will not be formed.
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How many instances of cell-cell communication are involved in the motor component of a visceral reflex arc?.
Two instances of cell-cell communication are involved in the motor component of a visceral reflex arc.
What is a visceral reflex arc?The visceral reflex arc can be defined as a part of the autonomic nervous network required during involuntary muscle responses.
The visceral reflex arc involves afferent sensory neurons and the stimulation of postganglionic neurons to target cells.
In conclusion, the number of cell interactions in the visceral reflex arc is equal to two (2).
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What do plants need to survive and reproduce
It is very important that plants gets the right amount of basic needs to survive and reproduce. This is essential to humans as their main source of food is from plant.
Plants needs light, air, water, nutrients, and space to survive and reproduce. Plants gets their source of light from the sun, they use this light energy to produce glucose in the leaf.
Plants obtain air from the atmosphere, they derive water and nutrients from the soil to enhance their growth.
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write the categories of classification in hierarchical sequence
Answer:
these are the seven taxonomic units:
Kingdom -it has the largest number of members and also the largest taxonomic unit
phylum (animals)/division (plants)
class
order
family
genus
species-it has the least number of members who freely interbreed to give rise to an infertile of spring
Explanation:
hope you got it! if there's any question feel free to ask .good day.
Answer:
Kingdom
Phylum/division
Class
Order
Family
Genus
Species
Explanation:
formulae
King
Philip/David
Can
Order
For
Green
Soaps
Which characteristic of life is being shown by the following image?
O Organisms react to stimuli
O Organisms grow and develop
O Organisms can adapt
O Organisms are made up of cells
O Organisms can use and obtain energy
Answer:
d
Explanation:
organisms are made up of cells
What accurately describes a difference between fungi and plants?
Fungi are different from plants in that they are achlorophyllous.
Fungi vs plantsFungi and plants are both eukaryotic in nature when it comes to their cells.
However, plants differ from fungi in that plants contain a green pigment known as chlorophyll while fungi do not. The green pigment enables plants to photosynthesize.
Thus, fungi are said to be achlorophyllous.
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What animal group lacks true tissues and includes species that are asymmetrical
The animal group which lacks true tissues and includes species that are asymmetrical is referred to as sponges.
What is Sponges?These are invertebrate animals which belong to the phylum porifera and consists of lots of pores.
They don't give equal parts when divided into half and they lack the presence of true tissues.
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The animal group which lacks true tissues and includes species which are asymmetrical is; Sponges.
Which animal group includes species that are asymmetrical?It follows from biology of classifications that the defining characteristic of sponges includes the fact that they lack true tissues and the species are asymmetrical. Hence, the features indicated in the task content are suggestive of sponges.
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A husband and wife have two sons. One boy has a straight thumb, while the other has a bent thumb. What causes this difference?
Which muscle fiber contracts slowly and is usually red due to the amount of blood vessels delivering oxygen to the muscle?.
Due to their immense oxygen needs, slow-twitch fibers are associated with many blood vessels, mitochondria, and increased concentrations of myoglobin, an oxygen-binding protein in the blood that provides muscles their reddish coloring.
As an individual ages, new neurons and dendrites appear, but others atrophy. Compared to when they were adolescents, adults have fewer neural connections and their brain size _____ as they continue to age.
The brain and central nervous system shrink as we age.
What happens to the brain when we age?The brain is one of the most important organs in our body because all the nerve signals are produced there for our body to function.
In the brain we find nerve connections through neurons. A particular aspect of them is that during childhood and adolescence they multiply as we learn new things.
However, once we reach the stage of old age, these nerve connections deteriorate and are reduced, therefore, the size of the brain and the central nervous system decreases.
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Robert Hooke first observed cork under a microscope in jail so he named the small cubicles cells
False True
Answer:
False
Explanation:
The statement is false. Though "Robert Hooke" was the first person to observe cork under microscope. He named the small cubicles cells because it used to remind him of the cells in the monastery (a place for monks).
Answer:
False
Explanation:
RobERT Hooke observed the cork first and names the particles as cells .
But he did that in Monastery not jailHence the statement is false
The _____________ is composed of a vast system of microscopic tubules that communicate directly with the capillaries to filter the blood.
The glomerulus is composed of a vast system of microscopic tubules that communicate directly with the capillaries to filter the blood.
What are functions of glomerulus?The glomerulus is the network of small capillary blood vessels which is found embedded within the bowman's capsule of the kidney.
The functions of glomerulus include the filtration of blood to remove the following:
wastesdrugs andexcess water.Therefore, the glomerulus is composed of a vast system of microscopic tubules that communicate directly with the capillaries to filter the blood.
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What happens when the body fails to take up excess glucose from the blood a. The excess glucose binds to working proteins, rendering them nonfunctional. b. The excess glucose is metabolized to produce energy for physical activities. c. The excess glucose retains water in the body to prevent dehydration. d. The excess glucose from the blood gets stored in the adipocytes. e. The excess glucose gets converted into useful alcohols.
Explanation:The excess glucose gets converted into useful alcohols.
When the body is unable to take up excess glucose from the blood then at time the fats from the blood gets stored in fats storing cells called as adipocytes. The excess glucose gets converted into useful alcohols. Last option is correct.
What are adipocytes ?These are the cells that store fats in the human body are called as adipocytes. These are the main energy storing cells.
The excess glucose gets converted into useful alcohols.
At this situation glucose is provided by the the carbohydrates where the glucose is the stored compound in the form of glycogen.
Therefore, the excess glucose is stored in the form of useful alcohols.
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In adult circumcision, a ________ incision is made in the skin and carried circumferentially.
During adult circumcision, a dorsal incision is made in the skin of an individual and carried circumferentially.
What is circumcision?Circumcision can be defined as a surgical procedure that involves a removal of the foreskin from the pe-nis (genital) of a male organism, especially at infant stage.
Based on medical information, a dorsal incision is made in the skin of an individual and carried circumferentially during the removal of the foreskin from the pe-nis (genital) of an adult (adult circumcision).
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What was the background information that Schleiden and Schwann
needed to perform their experiments about cells?
Theodore Schwann and Mattias Schleiden needed the background information about cell is that how cells originate and functions in the body of animals as well as plants.
What is the contribution of Schwann and Schleiden?Schwann and Schleiden proposed the cell theory, which states that all living organisms are composed of one or more cells. The cell is the basic unit of structure and function in organisms.
Each cell arises from a pre-existing cell.
The basic information that Schwann and Schleiden needed before performing the experiments about cells is how cell-derived in this nature become the most important part of life in living entities.
They also wanted to know the actual function and metabolic activities of the cell.
Therefore, it is well described above.
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30. 9) To complete this Venn Diagram, label the following cell parts as A (Prokaryotic), B (common to both) or C (Eukaryotic) characteristics:
A B C
Prokaryotic
Eukaryotic
capsule
flagella
cell wall (incl. plants)
cytoplasm
cell membrane
nucleus
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Answer: Capsule : A
Flagella: A
Cell Wall: B
Cytoplasm: B
Cell membrane: B
Nucleus: C
Explanation: got this question correct on my lesson. Hope this helps, if you are in Visions, best of luck to you from another fellow vision student.
Sort the activities based on whether they decrease or maintain biodiversity.
The activities that decrease the biodiversity are excessive mining to obtain minerals and releasing sewage water into lakes.
The activities that maintain biodiversity are planting more trees and prohibiting fishing during breeding season.
What is biodiversity?The range of plant and animals on the planet or in a specific natural surroundings, that is significant and desirable.
Nature was despite everything is a productive wellspring of motivation in drug store, beauty care products, and agro-food enterprises for the revelation of bioactive items.
Informatics is currently present in most human exercises. In silico devices might help in various situations while concentrating on normal substances: in pharmacognosy, to store and construction the enormous and expanding number of information, and to work with or speed up the examination of regular items concerning conventional purposes of normal assets; in drug revelation, to soundly plan libraries for screening normal compound mimetics and distinguishing proof of organic exercises for normal items.
The activities based on whether they decrease or maintain biodiversity are:
Maintains :planting more trees
Decreases: excessive mining to obtain minerals
Decreases: releasing sewage water into lakes
Maintains: prohibiting fishing during breeding season
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Answer:
Explanation:
PLANTING MORE TREES EXCESSIVE MINING TO OBTAIN MINERALS RELEASING SEWAGE WATER INTO LAKES PROHIBITING FISHING DURING BREEDING SEASON
Reviewing Meiosis:
1. How many cells are present and how many chromosomes are present in the cell at each stage?
start of Meiosis____
end of Meiosis 1_____
end of Meiosis 2____
1. How many cells are present and how many chromosomes are present in the cell at each stage?
start of Meiosis a parent cell that is diploid
end of Meiosis 1 when the chromosomes of each homologous pair arrive at opposing poles of the cell.
end of Meiosis 2 four haploid daughter cells
Which of the following could result in secondary succession?
the formation of a tall sand dune on a previously grassy beach
a vast glacier in motion forming a U-shaped valley in its wake
a volcanic eruption that covers most of what used to be a forest
an introduced species that destroys all the native plants in an area.
The answer is D. An introduced species that destroys all the native plants in an area.
What embyonic germ layer gives rise to nervous tissue?
The embryonic germ layer that gives rise to nervous tissues is the ectoderm.
Embryonic layersThere are 3 types of embryonic layers for triploblastic animals:
The endoderm: this develops into the gut and other internal organs.The mesoderm: this develops into muscle cells and connective tissuesThe ectoderm: this develops into nervous tissues and epidermisMore on embryonic layers can be found here: https://brainly.com/question/9599868
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What are the main functions of red blood cells ?
Answer:
carrying oxygen
he condition of the Earth’s atmosphere at a given place and time is known as __________.
A.
climate
B.
precipitation
C.
temperature
D.
weather
Answer: D weather
Explanation:
What would happen if you changed the temperature and ph around the enzyme?
However, extremely high temperatures can cause an enzyme to lose its shape (denature) and stop working. pH: Each enzyme has an optimum pH range. Changing the pH outside of this range will slow enzyme activity. Extreme pH values can cause enzymes to denature.
If the temperature and pH around an enzyme is changed, the enzyme would likely denature. Details about enzymes can be found below.
What is an enzyme?Enzymes are biological catalyst that regulates the rate of biochemical reactions in living cells.
Enzymes function at a particular temperature and pH and can easily get denatured i.e. alter its original form.
This suggests that if the temperature and pH around an enzyme is changed, the enzyme would likely denature.
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What blood vessel is a tributary of the hepatic portal vein?
According to the research, the linear vein is a tributary blood vessel of the hepatic portal vein.
What is the hepatic portal vein?It is a blood vessel that carries deoxygenated blood from the digestive organs and the spleen to the liver.
The linear vein is one of the branches of the celiac trunk that supplies the spleen and gives off branches to the stomach and pancreas.
Therefore, we can conclude that according to the research, the linear vein is a tributary blood vessel of the hepatic portal vein.
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What kind of calls are usually smaller and found in simpler forms of life
Which represents a negative impact of technology?
A. Accessible technology
B. Production of waste
C. Improvement in climate
D. Access to more resources
Answer:
B
because it is harmful
A comparison that does not use "like" or " as" is known as ...
hyperbole
onomatopoeia
metaphor
simile
Answer:
Metaphor is the answer.
which question can be using the scientific process
Answer:
I'm not great with this subject... but what are the questions given? I may be able to help in that way
Explanation:
Which of the following is the best definition of an unsaturated fatty acid? 8 A. A basic unit of a lipid that consists of single and double carbon-to- carbon bonds B. A compound that carries hereditary information C. An insoluble compound made up of glycerol and three fatty acids D. A basic unit of a lipid that consists of only single carbon-to-carbon bonds
