true or false ? Cell membranes are selectively permeable, allowing only some materials to cross the cell membrane. This
property allows cells to maintain homeostasis.
Answer:
True
Explanation:
Cell membranes are selectively permeable because of the structure of the phospholipid bilayer.
This bilayer only lets certain things in because it depends on the polarity, size, and type of molecule.
For example, glucose molecules are too large to enter. But, carbon dioxide molecules can go in and out easily because of their small size.
Answer:
This statement is True
“One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane. The lipid bilayer is selectively permeable to small, nonpolar substances. Proteins in the cell membrane include cell-surface markers, receptor proteins, enzymes, and transport proteins.”
i need help, please help
Answer:
whats the name of the unit
Explanation:
Can some please help quick!
I need to find the control group for the three experiments.
Please help I’ll give brainliest!!
Answer:
An increase in temperature.
Explanation:
When the temperature rises water evaporates much quicker than if it were just a lightsource hitting the surface of the water. It's like if where really hot outside and you had a pool.The water would start to steam up and evaporate has the temperature rose.
These are true of living things. *
A. The life cycle of many organisms involves development.
B. All living things grow during at least part of their lives.
C. Each tyhpe of organism has a distinctive life cycle.
D. Cells may change in number but never differentiate.
Answer:
The answer is at least B. (I'm not sure if it is a 'choose all that are correct' question)
Explanation:
All living things grow and develop during their lifetime.
what two methods do scientists use to gather information
Answer:
Observation and Experimentation
PLEASE ITS EASY!!!!!! please
Answer:
1.group B
2.new sauce
3.amount of gas
4.the new sauce appear to work as it the amount of gas produced in 60% of the people tested.
What is the concentration of the CaCl2 (calcium chloride) salt solution if you are given 3.2g of CaCl2 and you add 4ml of water? The units for your answer should be mg/ml.
Answer:
800 mg/ml
Explanation:
Recall that: 1 g = 1000 mg.
Hence
3.2 g of CaCl2 = 3.2 x 1000 = 3200 mg CaCl2
mass concentration of CaCl2 = mass of CaCl2/volume of water
= 3200/4 (mg/ml)
= 800 mg/ml
Therefore, the concentration (in mg/ml) of CaCl salt solution formed by dissolving 3.2g of CaCl2 in 4 ml of water is 800 mg/ml.
The concentration of calcium chloride solution will be 800 mg/ml.
The calculation of the concentration of CaCl₂:Based on the given information,
The mass of CaCl₂ given is 3.2 grams. The volume of water is 4 ml.Now the concentration of CaCl₂ can be determined as,
Concentration = Mass/Volume
Now putting the values we get,
[tex]Conc = \frac{3.2 g}{4 ml} \\Conc = 0.8 g/ml\\Conc = 0.8 g * 1000 mg/ml\\Conc = 800 mg/ml[/tex]
Thus, the concentration of CaCl₂ is 800 mg/ml.
Find out more information about the calculations of concentration here:
https://brainly.com/question/4619168
^^^ the image above plz help ASAP thanks :))
Answer:
CO or carbon monoxide
Explanation:
Remember the first letter each element is capitalized!
ex: Au gold, He helium
so when there are two capital letters you got your self a compound
PLEASE HELP ASAP
At which point is subduction occurring?
1
2
3
4
Answer:
The answer is 4 :)
Explanation:
What vocational area is the FFA built around? List or identify National officers from california and their year of service.
Answer:
1. The National FFA Organization is built around Agricultural education.
2. The National Officers from California from 1928 -2020 are:
Arthur Ketterlin 1928-29Lex Murray 1937-38Joseph E. Giacomini 1941-42Robert Bowman President 1943-44Eugene E. Starkey 1945-46Robert L. Smith 1950-51Jerry Diefenderfer 1962-63Joe Martinez 1968-69Dan Dooley 1970-71Peter Giacomini 1974-75Phil Benson 1979-80Jan Eberly President 1982-83Michael Gayaldo 1984-85Louie Brown 1991-92Kevin White Secretary 1992-93Travis D. Hagen Secretary 1994-95James Garner 1998-99Angela Browning 2000-01Dane White President 2001-02Tim Hammerich President 2002-03Beau Williamson President 2006-07Nessie Early Secretary 2008-09Levy Randolph President 2009-10Lindsey Anderson 2012-13Breanna Holbert President 2017-18Luke O’Leary President 2018-19The National FFA Organization, is built around the vocational areas of agriculture and leadership
The National officers from California are:
Breanna Holbert; Year of service, 2017 - 18
Luke O'Leary; Year of service, 2018 - 19
David Lopez: Year of service, 2020-21
The reason the above description and list are correct is as follows:
The National Future Farmers Association (FFA) Organization, is a student organization that develops the potential and talent development of those students that have an interest in leadership and agriculture, by providing opportunities for hands-on experiences
National officers from California are;
Breanna Holbert: National FFA President, 2017-18;
Luke O'Leary: National FFA President, 2018-19
David Lopez: Western Region Vice President, 2020-21
Learn more about the National FFA Organization here:
https://brainly.com/question/19403058
3 intersecting lines are shown. A horizontal line contains points R, A, T, S. Another line intersects at point A and also contains D, A, C. Line A B extends away from the center of the other intersecting lines. Analyze the diagram to answer the questions. Another way to name AngleSAC would be Angle . A point on ray AS is . Line segment A R and Line segment A B create Angle
Answer:
CAS
T
RAB
Explanation:
Answer:
c a d
Explanation:
what is the correct defination of eukaryotic organisms..expalin
I hope answer will be helpful for you
please mark answer is brilliant answer
Thank youHow are water & mineral transported in plants?
Answer:
The xylem.
Explanation:
They are transported by the xylem in the plant.
Choose the best description, definition for Uniformitarianism. Please help im failing badly
Answer:
The correct answer is b. The principle of Uniformitarianism is based on the idea that Earth´s physical landscape is the result of processes and forces that have happened uniformly since the earth formed.
Explanation:
Stated by the geologist James Hutton, this principle says basically that all the geological processes that currently occur had also occurred in the past. Based on this principle, many events might be explained, and not only geological events, but also biological events.
The Uniformitarianism or Uniformism principle states that all the processes that have occurred during the whole Earth history, have been uniform (that is why this principle is named Uniformitarianism) and similar to the current processes.
This principle is very important nowadays, but knowing that not all processes are completely uniform, they have been changing heir intensity and rhythm. Besides, there is a very important factor that is not repeatable, living organisms, that have been lineally changing throughout history.
People who tend to perceive the elements of their environment as
separate and distinct from one another are called
A Field-independent
B. Augmenters
C. Reducers
D. Field-dependent
Answer:
The correct answer is A.
Explanation:
Field independence is a cognitive style that people can manifest, it consists of the ability to isolate a certain trait that is perceived as relevant, from the context in which it is integrated, that is, field-independent people usually isolate the different parts that make up the objects or stimuli. Field-independent people are characterized by having analytical and organizational capacities, a more abstract and impersonal orientation and being autonomous in their social behavior.
In 2-3 complete sentences, explain what this tells you about the amount of friction over each of these surfaces
Answer:
can i get a real answer i have this question too
Explanation:
which fish—pollock or herring—better meets the energy needs of the Steller sea lions?
Answer:
Pollock
Explanation:
Bc it’s right :p
Yosef is playing with a different kinds of rubber bands. Some are very narrow and some are quite wide. Yosef is curious about the rubber bands and develops the following scientific question: Does the width of a rubber brand affect how easy it is to stretch it?
He decides to develop a hypothesis to test this scientific question. What could Yosef’s hypothesis be?
Answer:
If the width of a rubber band is increased, then it will be more difficult to stretch because more force will be needed to stretch it.
Explanation:
Answer:
If a rubber band is narrow, then it will stretch more because it resists less.
Explanation:
How do you measure the hypothesis?
Answer:
By what the experiment is and compared to the experiment when completed.
Explanation:
Stem cells all have the same dna true or false
Yes, stem cells do have the same dna
Since they grow from the same plant
Answer:
true
Explanation:
please me mark as brainlist
What would happen to life if water froze from the bottom to top of the ocean instead of top to bottom?
Answer: Everything would die and freeze
Explanation:
Proteins are packaged and transported in the___ *
Which of these structures are found in plant cells but not animal cells? Golgi apparatus Mitochondria Lysosomes Chloroplasts
Answer:
chloroplasts
Explanation:
because chloroplasts help plants to prepare food as they are autotrops
Distinguish the difference between a scientific and non scientific question.
Answer:
A scientific question is one where an investigation can be designed and completed to find out the answer without having to do multiple, entirely different investigations to get there. In a word, a scientific question is testable, but a non scientific question is not.
How is the function of the Endoplasmic Reticulum similar to a structure in a city? Give an analogy. Justify your answer. * 100 points
Answer:
The cell membrane can be compared to the school gates.
Explanation:
Cell membranes only let in specific molecules (people), large substances (old people) cannot cross it while smaller molecules like oxygen (students) can easily pass through the membrane.
customer service jobs to India results in saving money for firms that pursue this strategy, because wages are much lower in India than in the United States. s
Answer:I think it’s outsourcing
Explanation:
Read the observation, question, and hypothesis. Then, choose the dependent variable from the list. Observation: Most hummingbird feeders are red. Question: Are hummingbirds attracted to the color red? Hypothesis: Hummingbirds are more attracted to red feeders than nonred feeders. The dependent variable in this case is the color red. hummingbird feeders. hummingbird behavior. bird watching.
Answer:
hummingbird behavior
Explanation:
depends on color of bird feeder
Why does air on Earth not move simply in a direct path between the equator and the poles?
Answer:
Why does air on Earth not move simply in a direct path between the equator and the poles? Air does not move in direct paths because of the Coriolis effect. ... Air is deflected toward the southwest in the Northern Hemisphere and toward the northwest in the Southern Hemisphere.
Explanation:
Is a Beach abiotic or biotic
Answer:
abiotic
Explanation
it is not alive
Answer:
Abiotic
Explanation:
An abiotic factor is a non-living part of a ecosystem.
how does the sea urchin and the sea otter maintain balance and keep the kelp ecosystem healthy