Answer: controls what enters and leaves the cell
Explanation: it is a barrier keeping the constituents of the cell in and unwanted substansces out and is also a gate allowing transport into the cell of essential nutirnts and movement from cell of waste products.
The cell membrane is also referred to as the plasma membrane or cytoplasmic membrane of the cell. It lays various functions in the cell.
The correct answer is:
Option B. controls what enters and leaves the cell
Role of the cell membrane are:
The cell membrane is a biological membrane, which separates the interior of the cell from the external environment. The cell membrane is selectively permeable such that it allows certain molecules to pass through them. The cell membrane controls the entry and exiting of molecules from the cell.
Thus, the correct answer is Option B.
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Why do you think premenopausal women need more iron than
men of the same age?
Answer:
Women need more iron than men to make up for the amount of iron they lose in their menstrual period.
Explanation:
Answer:
Premenopausal women shed blood as part of menstruation every month, which lowers the level of iron in the body. So, they need more iron than men and are also at a greater risk for this nutritional deficiency.
PLATO
Explanation:
why does mosquito net easily form lather with hard water
Answer:
Hard water is defined as the type of water that does not readily give a good lather with soap.
Mosquito net do not form easily lather with hard water because hard water is made up of magnesium and calcium ions which precipitate the soap and unable to form lather.
Which of the following is an example of reproductive isolation?
Answer:
the example of reproductive isolation is temporal isolation, ecological isolation, behavioral isolation, mechanical isolation.
Properties of Water Lab Report
Instructions: Choose a property of water and design an experiment to test the property. Use the following lab template to ensure all lab report components are included.
Title:
Objective(s):
Identify the purpose of your investigation or the question you are attempting to answer. Be sure to tie in the property of water you are testing.
Safety Notes:
Always have parent(s) or guardian(s) permission and supervision when performing a lab activity at home.
Wear proper protective clothing and eyewear when needed.
Be sure to dispose of all materials properly.
Always wash your hands carefully after touching anything in a lab investigation.
Hypothesis:
Variables:
Independent Variable:
Dependent Variable:
Controlled Variable:
Materials:
Procedure:
The procedure should be clear and detailed so that others can repeat it. The details should be specific in how the procedure changes the independent variable, controls all variables that need to be controlled, and observes or measures the resulting changes to the dependent variable.
Data and Observations:
Present all data and observations in a neat and organized manner. Include tables and graphs where appropriate/possible.
Conclusion:
Be sure to answer the following reflection questions as a summary in the conclusion of your lab report:
Was your hypothesis correct? Why or why not?
What were the results of your experiment?
What changes would you make if you were to repeat the experiment?
Questions:
Using what you have learned in the lesson and the experiment, answer the following question in complete sentences.
Analyze the property of water you investigated and provide some real-world applications of the importance of this property of water.
Answer:
Hypothesis: I think the penny will hold more droplets plain water because adding soap to the water will disrupt surface tension
Independent variable: Penny and water dropper
Dependent variable: plain water
Independent variable:soapy water
Hope this helped
Which conclusion can be drawn from the experimental observation that a single strand of DNA contains 2100 dA residues and 1800 dT residues?
a. There must have been some loss of material in the extraction because the number of dA and dT residues must be the same.
b. This is a palindromic sequence.
c. There must be 2100 dT and 1800 dA residues on the complementary strand.
d. This must be prokaryotic DNA
e. None of these
Answer:
c. There must be 2100 dT and 1800 dA residues on the complementary strand.
Evidence without_______
increases its reliability.
a
bias
b
question
с
repetition
d
replication
Answer:
I'll say its B ) Question
Explanation:
because when your proving something with evidence then you start asking questions (or still have questions) makes it seem like you don't really know.
Which is a feature of a tonic receptor? Select one: a. The action potential occurs when there is a change in response to a change in condition. b. For this receptor, the stimulus begins with a burst of action potentials. c. They are normally inactive. d. When the stimulus changes the action potential generation changes. e. Provides information about the rate and change of the stimulus. f. The action potential is generated for a short time period.
Answer:
For this receptor, the stimulus begins with an explosion of action potentials.
that would be the correct option.
Explanation:
A tonic receptor is one that is activated when the action potentials were maintained over time and during the signaling of the receptor.
Tone receptors require continuous stimulation over a period of time to trigger a response and deliver it to the central nervous system.
It keeps the nervous system constantly active in the environment that surrounds it.
They are slowly adaptable, an example of these receptors are the merkel and ruffini receptors.
2. Name the sympathetic ganglia in which the preganglionic and postganglionic neurons synapse.
Answer:
The paravertebral ganglia is the sympathetic ganglia where the pre-ganglionic and post-ganglionic neurons synapse.
Explanation:
ASAP What is a photosynthetic pigment? What is a photosynthetic pigment? A. An oxygen based compound that captures light energy. B. A light sensitive compound that changes color. C. A colored compound that captures light energy. D. A manmade compound that reacts to light.
I think the answer is A.
Answer:
A. An oxygen based compound that captures light energy.
blood consists of which fluid medium
a.lymph
b.platelets
c.plasma
d.all of these
Answer:
C. Plasma
Explanation:
Blood consists of a fluid medium called Plasma.
I need help with this
Answer:
I know the answer
Explanation:
Yes
Yes
Yes
Drag each tile to the correct box. Place the items in order from lowest to highest degree of internal organization. Please answer 1st at the top and last at the botttom
Answer:
Lowest to highest degree of internal organization form the given items are:
1) Digestive system: Digestive system is a type of organ system, which is consist of several digestive organs such as mouth, stomach, pancrease and intestine.
2) Stomach: Stomach is a type of organn which is a functional group of tissues.
3) Stomach lining tissues: These are functional group of cells.
4) Epithelial stomach cell: cell is a basic unit of all life.
Hence, the correct order form loowest to highest degree of internal organization is:
Digestive system => Stomach => Stomach lining tissues => Epithelial stomach cell
Aquatic organisms in coastal areas face a variety of predators on land and in the water and air. Which ocean process exposes the coastal aquatic organisms to land-based predators? a. Changing wind patterns alter the ocean currents, changing tide levels. b. Daily tidal patterns leave areas exposed to the land for part of the day. c. The constant wave action generates nutrients that attract predators. d. The ocean conveyor belt raises and lowers the water levels on the coasts.
Answer:
b
Explanation:
The correct answer as to the ocean process that exposes the coastal organisms to land-based predators would be the daily tidal patterns that leave the coastal area exposed to the land for a part of the day.
Some parts of the coastal areas become exposed to land during certain periods of the day as a result of tidal waves. When this happens, the aquatic organisms occupying these coastal areas become temporarily exposed to land predators who hunt and kill them for food.
Therefore, the correct option is b.
Choose only one correct option. Explanation needed.
Answer: D
only green plants
Answer:
[tex]\large \boxed{\mathrm{D. \ Photosynthesis}}[/tex]
Explanation:
Photosynthesis is a characteristic present in plants. Photosynthesis is a process where plants transform light energy into chemical energy. Reproduction, respiration, and excretion are all characteristics of living organisms.
Match each part of Sammi's model to the bodily structure it represents. One bodily structure has already been labeled for you.
Answer:
corrugated cardboard tube - digestive tract
irregular surfaces on the corrugated tube - villi
pump - heart
Plastic tubing - blood vessels
Explanation:
The corrugated cardboard tube represents the digestive tract. The give away was the presence of the irregular surfaces within the tubes. This is called the villi. The villi is responsible for the absorption of food after digestion into the body.
Irregular surfaces on the corrugated tube represent the villi. They are tiny hair-like structures that are in the small intestine, that are responsible for the absorption of food into the bloodstream.
The pump represents the heart. The heart is the only organ in the body that provides the pressure force that pushes the blood throughout the body. In this model, the pump will most likely be performing the same function.
The plastic tubings are meant to contain one form of fluid or the other. Judging from that, they can be said to represent the blood vessels. This is because they are connected to the heart and are meant to transport bodily fluids around the body
Answer:
corrugated cardboard tube - digestive tractirregular surfaces on the corrugated tube - villipump - heartPlastic tubing - blood vessels
Explanation:
Identify the organelle where photosynthesis takes place.
B
C
D
E
Answer:
E
Explanation:
If E is the Chloroplasts, where photosynthesis takes place, then the answer is E.
Answer:
E
Explanation:
The ostrich is a bird. However, it has traits that are different from those of the birds we typically see flying around our neighborhoods. Using credible sources, investigate the environment and adaptations of ostriches to explain how they evolved to survive in their environment.
Answer:
According to National Geographic, ostriches are a part of a very small group of birds that cannot fly because unlike most birds, their small wings are not strong enough to carry their body for flight and their breastbone isn't balanced enough for flying. Birds that are unable to fly are called ratites.
A number of scientists namely Thomas Huxley, Richard Owen, and others have tried to show that these ratites are actually related to each other and eventually, it was discovered that they all had one thing in common, the way the bones at the roof of the mouth were arranged was similar to that of reptiles rather than other birds.
Richard Owen found and assembled the remains of an extinct ostrich skeleton which was an extinct moa and contrary to already held opinion, one ratite known as tinamous did not really fit with the profile of a ratite because it could fly, even though almost grudgingly and they possessed keeled sternum which suggests that they evolved from flying birds.
DNA tests showed that tinamous evolved within ratites and not necessarily as a separate entity. The tests also showed that moas and tinamous are related.
It was also speculated that the division of the supercontinent Pangaea southern side led to the separation of flightless ratite ancestors, causing each landlocked group to evolve and become the flightless birds we know today such as the ostrich, rheas, etc.
Answer:
An ostrich is an extremely large bird that lives in Africa. It can’t fly, but it has powerful legs that allow it to outrun most predators. Its flexible knees and two-toed feet enable it to run easily. An ostrich has strong leg muscles that it can use to kick large predators. It has claws on its wings to defend itself from predators and thick feathers to keep it warm at night. Ostriches have thick eyelids that protect their eyes from sandstorms.
Explanation:
A purebred tall pea plant is cross-pollinated with a tall, can you please help
heterozygous pea plant. Use a Punnett square to determine the probability the offspring inherita
recessive short allele. (I point)
75%
25%
0%
50%
Answer:
50%
Explanation:
because if you use the box method you see that half receive a short alele
T t
T TT Tt
T TT Tt
Taxonomists today tend to group organisms into the same category based on similar what?
Answer:
characteristics
Explanation:
oranisms are grouped based on shared characteristics
Taxonomists today tend to group organisms into the same category based on their evolutionary history and shared ancestry, as explained in Option A, as this allows taxonomists to construct more accurate and detailed phylogenetic trees.
What is taxonomy?The field of taxonomy is concerned with the classification of living organisms based on their shared characteristics, the aim of taxonomy is to group organisms in a way that reflects their evolutionary history and to provide a standardized system of naming, while earlier taxonomists relied on morphological characteristics, such as the physical appearance of an organism, but modern taxonomists instead use molecular and genetic data to group organisms into categories.
Hence, taxonomists today tend to group organisms into the same category based on their evolutionary histories and shared ancestry, as explained in Option A.
Learn more about the taxonomy here.
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The question is incomplete, complete question is below
Taxonomists today tend to group organisms into the same category based on similar what?
A)based on their evolutionary histories and shared ancestry
B)based on fossils
Which of the following is an example of a non-mendelian pattern of inheritance? A) all traits are inherited through patterns found by Mendel. B) when individuals with the genotype BB cross, all the offspring have brown fur. C) when pea plants that are hetero-zygous for a certain trait cross some of the offspring express both distinct versions of the trait. D) when horses that are homo-zygous for red hair are crossed with horses that are homo-zygous for white hair, the offspring have both red and white hair.
Which of the following best explains the potential health problems associated with endocrine disruptors? A) Endocrine disruptors are the only available pesticides,hence they are used widely. B) Endocrine disruptors mimic hormones that regulate critical biological processes. C) Endocrine disruptors do not biodegrade, remaining toxic years after their release. D) There are no major health problems associated with exposure to endocrine disruptors. E) Endocrine disruptors encompass a wide array of toxic pesticides.
B) Endocrine disruptors mimic hormones that regulate critical biological processes.
Endocrine disruptors, at times moreover called as hormonally unique trained professionals, endocrine disturbing engineered substances, or endocrine upsetting blends are manufactured substances that can interfere with endocrine structures. These aggravations can cause threatening developments, birth flees, and other developmental issues.
The potential health problems associated with endocrine disruptors is that Endocrine disruptors mimic hormones that regulate critical biological processes.
For more information:
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Answer:
It's A.) Endocrine disruptors mimic hormones that regulate critical biological processes.
Explanation:
Quizlet gave me the answer
Which of the circumstances below most accurately describes conditions that are likely to permit a robust anti-tumor adaptive immune response?
a. A tumor with high expression of proteins that have mutations in sequences encoding HLA-binding peptides.
b. A robust acute inflammatory response to PAMPs expressed specifically by tumor cells.
c. Anti-tumor T lymphocytes that have high expression of CTLA-4.
d. A tumor with high expression of PD-L1.
Did you ever figure out the answer to this question?
The study of PAMP-DAMP complexes is vital to the advancement of knowledge regarding inflammatory disorders in general and cancer in particular. Therefore, option (B) is correct.
What is PAMP-DAMP complexes?Increasing evidence links inflammation to cancer, and at the root of inflammation are PAMPs and DAMPs (DAMPs). Microorganisms contain PAMPs, which are detected by pattern recognition receptors on monocytes and DCs (PRRs). PRR activation produces pro-inflammatory cytokines.
A robust immune response requires endogenous chemicals that pose 'risk' to self-tissues and are created by injured or stressed cells; these are DAMPs, which also trigger inflammation. PAMPs and DAMPs each have about 100 receptors. PAMPs and DAMPs interact; a PRR can bind to both. In this system, PAMPs and DAMPs affect each other's activation threshold. Thus, PAMP-DAMP relationships describe inflammation in a predictable 'inflammatory code'
PAMP-DAMP complexes are key to understanding inflammatory disorders and cancer.
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What are two major drivers of surface ocean current and deep ocean current? 1. Surface ocean current 2. Deep ocean current The choices are: A. Differences in water density, resulting from the variability of water temperature and salinity B. Global wind systems
Answer:
1-B 2-A
Explanation:
this is because the wind blowing over the water causes motion whereas deep water is effected by Differences in water density, resulting from the variability of water temperature and salinity
Could an object, tool, or structure be made without the use of a natural resource? Explain your answer.
all of the following are examples of organic matter soil except
This question is incomplete; here is the complete question:
All of the following are examples of organic matter soil except
A. Decaying plants
B. Bacteria
C. Fungi
D. Water
The answer to this question is D. Water
Explanation:
Organic matter derives from living beings, due to this, organic matter is considered as a biological product. In this context, materials such as decaying plants are organic matter because they derive from living organisms and contain biological molecules (most contain carbon). This category does not apply to water, which is composed of hydrogen and oxygen and does not derive from living beings. Thus, the one that is not organic matter is water.
Answer:
D. Water
Hope this Helps!! :))
is the basic unit of structure and function of living things.
Answer:
cells
Explanation:
is the basic unit of life :)
During cellular movement which filaments will be the ones that are responsible for attaching and pulling the other filaments along?
Answer:
Myosin
Explanation:
Myosin are the major components of both muscle and non muscle cells in striated muscles which is responsible for contraction or movement that convert chemical energy (ATP) into mechanical work thereby generating force and movement.
During cellular movement , myosin filament will be the ones that are responsible for attaching and pulling the other filaments along because Myosin binds to actin at a binding site on the globular actin protein,it also have ATP binding sites which hydrolyses ADP to ATP , ATP binding causes myosin to release actin, which make actin and myosin to detach from each other thereby causing attachment and contraction of other filaments
Which location is least likely to experience a volcanic eruption? Α. an island hot spot, such as the island of Hawaii B. Hamilton County on the plains of central Texas с. a convergent boundary, as in the Ring of Fire D a volcanic island arc, such as the Aleutian Arc in Alaska
Answer:
i think that the answer is B. Hamilton County on the plains of central Texas i took the test
Explanation:
Hamilton County on the plains of central Texas is least likely to experience a volcanic eruption. Therefore, option (B) is correct.
What are volcanoes?Molten rock and gases stored under the surface erupt through a volcano, generating a hill or mountain.
Active, inactive, or extinct volcanoes. Active volcanoes are likely to erupt again. Dormant volcanoes may erupt again. Extinct volcanoes won't erupt.Magma collects inside active volcanoes. The magma chamber's pressure forces it through rock channels and onto the planet's surface.
Volcanic eruptions can be violent or slow-moving. Volcanoes erupt through vents on the sides or a primary entrance at the top. The volcano's morphology depends on eruption rate and magma chemistry. Land and sea volcanoes exist. As lava cools and hardens, underwater volcanoes build mountains and ranges. When volcanoes rise above the ocean, they create islands.
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Some people use the terms "cell cycle" and "mitosis" as if they were the same thing. Which of these best describes why they are not the same?
a. the cell cycle is just a stage of mitosis
b. mitosis and the cell cycle are different types of cell division that occur in different of cells in a multicellular organism
c. mitosis is a sequence of events within the cell cycle that separates the genetic material
d. mitosis is a type of cell division that occurs in eukaryots and the cell cycle takes place in prokaryots
Answer: C. Cells in meiosis have unique genetic information
Explanation: Meiosis is the cell division that forms four daughter cells from one parent cell. It includes two successive divisions called as meiosis I and meiosis II. Crossing over during prophase I of meiosis I imparts new gene combinations to the daughter cells of meiosis. Hence, daughter cells formed by the end of meiosis have some new gene combinations, that is, unique genetic information.
PLS HELP ME OUT WITH THIS ANSWER........ WHAT IS DINOFLAGELLATES ?
Answer:
These are single-celled MESOKARYOTES constituting the phylum DINOFLAGELLATA
Explanation:
Their populations are distributed depending on sea surface temperature,e.t.c.
Hope it helps.
• They are basically unicellular, motile, biflagellate and photosynthetic protists. Predominate colour is golden brown but yellow, green, red and even blue also exists.Some Dinoflagellates like Gymnodinium and Gonyaulax grow in large number in the sea and make the water look red and cause the so called “red tide”.
