The plasma membrane, or plasmalemma, is the structure that completely covers the surface of the protoplasm, serving as a protective barrier and regulating the passage of substances into and out of the cell.
The structure that completely covers the surface of the protoplasm is the plasma membrane, or plasmalemma. This membrane serves as a protective barrier that regulates the passage of substances into and out of the cell.
In some protozoans, a structure called the pellicle is present just inside the plasma membrane, providing additional rigidity.
Underneath the plasma membrane, ectoplasm and endoplasm form distinct layers of cytoplasm that contribute to complex cell shapes.
The cell wall is another structure described in plant, fungal, and some protistan cells; it is external to the plasma membrane and offers protection, support, and shape to the cell, but it is not the surface that covers the protoplasm in animal cells such as protozoans.
Instead, in protozoans, it's the plasma membrane that completely covers the protoplasm.
1. What is a macromolecule? Name four macromolecules present in all living things and identify what they have in common.
Which term best describes the movement of water molecules in and out of a cell?
Answer:
Osmosis is the answer
Answer:
ᴏsᴍᴏsɪs term used to describe the movement of water molecules in and out of a cell.Botulinum toxins binds to receptors present at the axon terminal in order to enter the neuron. What vesicular transport process do you think is involved in the toxin entering the nueron?
Who named the cell and how did he come up with that name ?
Explain the main difference between organisms of the domains bacteria and archaea and organisms of the domain eukarya.
The small blood vessels that deliver blood to and pick blood up from tissues are
All matter is made of elements.
Question 1 options:
True
False
A cell with chloroplasts and a cell wall made of cellulose would likely belong to a(n)
Answer:
The correct answer will be-kingdom plantae.
Explanation:
The Plantae kingdom represents the diversity of the plants present on the earth.
The plants are also living organism made up of cells which shows distinguishable features from the kingdom Animalia as the cells contain a green pigment capable of performing photosynthesis called chloroplast and a cell wall around plasma membrane made up of a carbohydrate called cellulose.
Thus, the kingdom Plantae is the correct answer.
Flatworms are capable of reproducing sexually or by _____. budding fragmentation reverse osmosis
Answer:
Fragmentation
Explanation:
Fragmentation is the mode of asexual reproduction in which the parent body breaks into several pieces. Each of these pieces develop into new organism by regenerating the missing parts. Flatworms reproduce by both sexual and asexual methods. The asexual method of reproduction in flatworms include fragmentation.
Most _____ are crops like corn, goldenrod, or clover.
Answer:
Mesophytes
Explanation:
Corn, goldenrod, or clover are examples of mesophytes.
Mesophytes are the species of plants that survive in regions with moderate environmental conditions. Their body structure consists of well-developed fibrous roots and branched stem.
Mesophytic species of plants include the following
a) Agricultural crops
b) Plants and trees grown in garden
c) Flowering trees like deciduous trees
Among, the given options corn and clover are agricultural crop while golden rod is a garden flowering plant.
Thus, most mesophytes include crops like corn, goldenrod, or clover.
Which form of genetic material initiates RNA interference?
A) double-stranded DNA
B) double-stranded RNA
C) single-stranded DNA
D) single-stranded RNA
The correct answer is option B, that is, double-stranded RNA.
An RNA-dependent gene silencing procedure known as RNA interference is mediated by the RISC (RNA-induced silencing sequence) and is stimulated by the molecules of short double-stranded RNA in a cytoplasm of the cell where they associate with the argonaute, that is, a catalytic RISC constituent.
In a river, large boulders are transported by _____. A. Solution B. Traction C. Suspension D. Abrasion
Can you get carpal tunnel at a young age
The portion of an enzyme that binds specifically to the substrate or substrate is referred to as
The active site is the portion of an enzyme that binds specifically to the substrate or substrates. Enzymes are highly specific due to the shape and chemical environment of their active sites.
Explanation:The portion of an enzyme that binds specifically to the substrate or substrates is referred to as the active site. The active site is a unique region within the enzyme where the substrate molecules can bind and undergo a chemical reaction. Enzymes are highly specific due to the shape and chemical environment of their active sites, allowing them to only bind to compatible substrates.
A substance that speeds up a chemical reaction—without being a reactant—is called a catalyst. The catalysts for biochemical reactions that happen in living organisms are called enzymes. Enzymes are usually proteins, though some ribonucleic acid (RNA) molecules act as enzymes too.
Enzymes perform the critical task of lowering a reaction's activation energy—that is, the amount of energy that must be put in for the reaction to begin. Enzymes work by binding to reactant molecules and holding them in such a way that the chemical bond-breaking and bond-forming processes take place more readily.
Where does lactose metabolism occur in the human body?
Why would an ecosystem with only a few different types of organisms have less complex food web than any ecosystem with many different types of organisms?
Fewer organisms are required to complete a less complicated food web, more nutrients are taken up and less energy is required to complete the food web.
What is a food web?Because fewer creatures are required to complete a less complex food web, more nutrients are absorbed, and less energy is required to complete the food web.
A food web is a network of interrelated food chains that represents the movement of materials and energy within an ecosystem.
In less complex food webs exist in ecosystems with fewer distinct types of organisms than those with many different types.
In a food chain, the many arrows symbolize the various species that are being consumed by one another and so reflect the flow of energy. Additionally, it shows that an animal can eat a variety of foods.
Therefore, in a less complex food web, few organisms are needed to be presented.
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Why are surgeons not able to tell if a patient has regained consciousness during a surgery by simply observing them for muscle movement or listening for speech sounds?
Which question can be answered using the scientific process
Answer:
What is the effect of plastic bags on birds?
Explanation:
just did the question
what is the definition of bias?
You have been called to a bar full of intoxicated patrons for a 46-year-old man who fell off his stool, injuring his left arm. as you assess his arm, he screams in pain. several of the patrons get angry and yell for you to give him something for pain. someone in the back throws a bottle in your direction. what should you do next?
In an emergency where you're dealing with a potentially volatile crowd, try to deescalate, communicate professionally, and notify security or law enforcement. Enforcing a safe and controlled environment is pivotal. Once stability is restored, attend to the patient and provide necessary medical treatment.
Explanation:In this scenario, the foremost duty is to ensure the safety of yourself and your patient. To follow the bystander effect instructions, your first action should be to try to deescalate the situation, communicating calmly and professionally with the patrons. Explain that you are a medical professional there to assist and that their actions are hindering his care.
If this fails, your next immediate action should be to seek help from security or notify local law enforcement. You need to ensure that you and the patient are safe and that the environment is controlled. Authorities will deal with the unruly crowd, allowing you to focus on providing medical care.
Once the situation is under control, you can then attend to the injured man and provide the necessary medical treatment. Remember that in emergencies, the priority is always safety first, followed by appropriate medical care.
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Is an increase in size or body mass resulting from an increase in complete already formed body parts?
Study the photosynthesis model above. What is a correct assumption about the inputs and outputs of photosynthesis? A) without light energy from the sun, photosynthesis would still occur B) oxygen is an input into photosynthesis; carbon dioxide is an output C) carbon dioxide is the source of energy; oxygen is the chemical energy produced D) sunlight is the source of energy; plant sugars are the chemical energy produced
D) sunlight is the source of energy; plant sugars are the chemical energy produced
The right answer is D) sunlight is the source of energy; plant sugars are the chemical energy produced.
The function of photosynthesis is, in plants, to convert the energy provided by light into stable and assimilable chemical energy by an organism. It is produced by chlorophyll cells that transform the inorganic matter (photons) into organic matter (sugars).
a mother has one allele for color blindness and one allele for normal vision. what is the probability that her gamete will have the allele for color blindness
Answer: The correct answer is -
The probability that gamete of female will have the allele for color blindness is 1/2 that is half.
Explanation:
Color blindness is a X linked recessive disorder. It means that a female can only have color blindness if the gene for color blindness is carried by both the X chromosomes (that is homozygous recessive genotype) .
As per the given information in the question, mother contains one allele for color blindness and one for normal vision
This means that mother is a carrier of colorblindness.
Therefore, two different gametes produced by her are- X and [tex]X^{c}[/tex].
Thus, probability of gamete having allele for colorblindness is 1/2.
Enzymes in the __________ are important in the metabolization of drugs.
Why is the cell membrane described as a fluid mosaic model?
The cell membrane is described as a fluid mosaic model due to its dynamic nature and composition. It's 'fluid' because of the ability of membrane components like phospholipid molecules and embedded proteins to move laterally within the membrane. It's 'mosaic' because of various components, like lipids and proteins, creating a complex pattern.
Explanation:
The cell membrane is described as a fluid mosaic model due to its dynamic nature and composition. This model was proposed by S. J. Singer and Garth L. Nicolson to better explain the structure and function of the plasma membrane.
The model describes the plasma membrane's structure as a mosaic of various components including phospholipids, cholesterol, proteins, and carbohydrates which are able to move and change positions, while maintaining its integrity. The 'fluid' part of the model refers to how certain components such as phospholipid molecules and embedded proteins can move laterally within the membrane. This fluidity is essential for the activities of certain enzymes and transport molecules within the membrane.
The 'mosaic' part refers to the diverse array of lipid and protein components that form complex patterns within the membrane. These components exist as separate but loosely attached molecules, similar to the tiles of a mosaic picture, hence the term 'mosaic'.
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An organism is a multicellular autotroph with eukaryotic cells. To what kingdom does it belong
Answer:
Plants or Plantae
Explanation:
How do sheet joints and exfoliation domes form in granite plutons?
Which of these is a question you will ask yourself when using a 3-2-1 organizer?
A 3-2-1 organizer involves asking questions about the connections between ideas and paragraphs, as well as analyzing support and anticipating future content.
Explanation:When using a 3-2-1 organizer, you can ask yourself questions such as:
How does one idea connect with another? This helps you understand the flow and coherence of the information.How does one paragraph connect with another? This helps you analyze the structure and transitions in the text.How does one idea support or refute another? This helps you evaluate the arguments and evidence presented.What is to come? This helps you anticipate the upcoming content and prepare for it.A 3-2-1 organizer involves asking questions about the connections between ideas and paragraphs, as well as analyzing support and anticipating future content.
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Which part of the axial skeleton does cleft palate disorder affect?
Refer to the figure below.
H3C--OH
What type of chemical bond connects the carbon and
oxygen atoms in the molecule shown?
a) Nonpolar covalent bond
b) Asymmetric bond
c) Polar covalent bond
d) Hydrogen bond