.
Explanation:
1)The cell membrane functions as a semi-permeable barrier, allowing a very few molecules across it while fencing the majority of organically produced chemicals inside the cell. Electron microscopic examinations of cell membranes have led to the development of the lipid bilayer model (also referred to as the fluid-mosaic model). The most common molecule in the model is the phospholipid, which has a polar (hydrophilic) head and two nonpolar (hydrophobic) tails.
2) simple diffusion across the cell plasma membrane. The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down the concentration gradient is , by simple diffusion.
3) some molecules, such as carbon dioxide and oxygen, can diffuse across the plasma membrane directly, but others need help to cross its hydrophobic or however, because they are charged the polar, they can't cross the phospholipid part of the membrane without help .
4) during fission a copy of the DNA is made and attached to the cell membrane as well. As this cell elongate in preparation for fission, the two DNA copies are pulled apart two opposite ends of the cell. New membrane material is deposited between the two ends of the cell, and a new wall grows between them .
5) UMASS STEM-ED From Bubbles to Cell Membranes Workshop. Bubble ... dynamic nature which can't be properly appreciated in a static textbook. ... the small thread through one of the straws.
6) example of passive transport and active transport across a cell membrane so, cell membranes are semipermeable meaning they have control over what molecules can or cannot pass through. Some molecules can just drift Inn.
Can’t roots be eaten as food? True or false.
Answer:
false
Explanation:
hope dis helps
Answer:
true, people have been eating roots for years
Hope this helps!!!
plz mark brainliest
Explanation:
The following can be very useful to plants in nitrogen cycle except ______________
a)nitrifying bacteria
b)denetrifying bacteria
c)lightening
d) nitrogen fixing bacteria
Which of the following is another way to refer to body cells?
a. sex cells
b. gametes
c. mitosis
d. somatic cells
Answer:
: somatic cell —opposed to germ cell. 2 : the one of two cells produced by division of the generative cell in the pollen grain of certain gymnosperms that in turn divides to produce two male nuclei or cells
Answer:
D is the answer I'm pretty sure :)
can someone explain what's going on in the graph?
A plant and an animal are both living things. According to the Cell Theory, what can you conclude about these two
very different organisms? SC.912.L.14.1
Plants have cells but animals do not
They are both made of one or more cells.
They both come from the same kind of cell.
O They both come from a non-living organism.
Answer:
They are both made of one or more cells.
Explanation:
A plant and an animal are both living things. According to the Cell Theory, what we can conclude about these two very different organisms is that they are both made of one or more cells.
A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature.
A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
Generally, cells have the ability to independently replicate themselves.
In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles and they include nucleus, cytoplasm, cell membrane, golgi apparatus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, vesicles, etc.
the movement of rock by wind is known as _____
can someone help me with this?
Answer: erosion?
Explanation: the definition of erosion is the movement of rock particles by wind.
Answer: i agree with the person above me
Explanation: it's erosion
Members of the Kingdom Plantae are characterized by _ while members of the Kingdom Fungi are characterized by ---
cell walls of cellulose; cell walls of chitin
heterotrophy, autotrophy
mostly unicellular organisms; having segmented bodies with jointed appendages
having segmented bodies with jointed appendages; mostly unicellular organisms
d
Answer:
Heterotrophy, Autotrophy
Reasoning: Heterotrophy organisms are organisms who can't retrieve food themselves and use energy and sunlight in order to get their food, which is exactly what plant cells do. Autotrophy is the ability to produce things such as carbon dioxide and oxygen, which plants do as well. Hence, Heterotrophy and Autotrophy are the most reasonable answers.
This question may be completed independently or as a group exercise. You have learned that humans have 46 total chromosomes, and chimpanzees have 48 total chromosomes. Use other textbooks in biological anthropology and biology (or reputable online resources) to find the number of chromosomes in other organisms. Give an organism with considerably more chromosomes than humans. Give an organism with considerably fewer chromosomes than humans. Did your findings surprise you
Answer:
In comparison to humans, there are more chromosomes in the Hermit crab that is 127 pairs of chromosomes for a grand total of 254 and in Myrmecia pilosula has fewer chromosomes than humans.
The complexity of an organism or how advance is an organism has nothing to do with the number of chromosomes it had. The chromosome number is subject to change over time. Human ancestors had more chromosome numbers as compared to now but they are not advanced to us.
Oil is a nonrenewable resource because it:
is made from plant remains
will never run out
takes millions of years to make
is quickly and easily made
Answer:
C. Takes millions of years to make
What are some ways that stars can be different?
Answer:
hello
Explanation:
the star is the far from earth they are big as the not look from the earth .they look twinkel because of atomphere refraction which make the wavelengh of star into the increasing and decreasing wave when increase wave come to our eyes it look bright and when decrease it look dim while plant can not doAnswer:Their brightness is one of the 3 reasons on how you can tell them apart Their brightness is a factor of how much energy they put out–known as luminosity an also how far away they are from earth .Color can also fluctuate from star to star because Not all stars are the same temperature!Some are more cool and some are warmer!Hot stars appear white or blue, rather with cooler stars appear to have orange or red hues.We would normally think a orange or red would mean hot but no in this case!
What are stars made up of?
Stars are made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores. All the dots of light we see in the sky are all light-years from Earth!
Solid or gas?
Stars are The first state is a solid and it is the coldest state of matter.
Are stars alive?!
No silly stars are not alive !Their “birth and death.” It's a convenient, if fanciful, way of describing the ultimately ill-fated relationship between matter and energy that is a star.
NEED HELP WITH THIS QUESTION!!! PLEASE HELP ME!!!
Answer: xylem
Explanation:
Direction of transport : Xylem= Upwards
Phloem=Upwards and downwards
4. Is there a relationship between the number of black boxes and any of the water pumps. Be specific and detailed in your answer. .
Answer: Cholerae is fecal contamination of water, meaning people can only get this by using or drinking the contaminated water. If a water pump has the contaminated water, boxes near that water pump will seem higher than areas with clean water.
Explanation:
Choose the word that best completes each sentence. Angiosperms’ anchor them in the ground and absorb water for the plant. Their stems provide support to the plant and connect the roots and leaves. Their capture the sun’s energy and use it to make food through the process of photosynthesis. Angiosperms’ contain the reproductive parts of the plant. Their protect and help spread the seeds.
Answer:
Root anchor them in the ground and absorb water for the plant. Woody stem provides support to the plant and connect the roots and leaves. Leaves capture the sun's energy and use it to make food through the process of photosynthesis. Flowers contain the reproductive parts of the plant. fruite protect and help spread the seeds.
Explanation:
Answer:
roots, leaves, flowers, fruits
Explanation:
The endocrine system and the nervous system both send messages that control processes in other parts of the body. Which is an example of a process caused mainly by the endocrine system?
A. developing allergies to pollen, pet hair, or specific foods
B. regulating growth and functions of certain body organs
C. improving your skills at a sport or other physical activity
D.pulling your hand away when you touch a hot stove
Which picture above accurately shows an example of the circulatory organ system in a zebra?
A. figure 2
B. figure 3
C. figure 4
D. figure 5
Match the words to the definitions
The volume of a liquid is often given in a. meters. c. liters. b. centimeters. d. square units. Please select the best answer from the choices provided A B C D Mark this and return
Answer:
C
Explanation:
Liters is a normally used measurement for liquids.
PLEASE HELP ASAP! WILL GIVE BRAINLIEST TO CORRECT ANSWER! HELP!! HELP!!
The diagram shows the structure of an animal cell.
The image of an animal cell is shown with some organelles labeled numerically from 1 to 6. The outer double layer boundary of the cell is labeled 1. A stacked disc like structure is labeled 2. A broad rod shaped structure with an irregular shape inside it is labeled 3. The entire plain section that forms the background of the cell and is within the outer boundary is labeled 4. A small circular shape within the large circular shape is labeled 5. The large central circular shape is labeled 6.
Which number label represents the cell membrane?
1
2
4
6
(this is middle school science)
Answer:
4
Explanation:
Answer:
4
Explanation:
I took the test
Where does competition for reproduction mostly likely occur
All organs in the human body perform important functions. Which organ controls all
of the other organs and is called the control center of the body?
stomach
B
small intestine
С
brain
D
liver
Answer:
c
Explanation:
Answer:
Well I thought it was the nervous system but that is connected/ made up of the brain so I would go for C, Brain
1. Which of the following has the smallest effect on the rate of photosynthesis?
A. Light intensity
B. Temperature
C. Oxygen concentration
D. Carbon Dioxide
2. The tiny mouth wide openings in leaves where gases move in and out is called ?
A. Stroma
B. Stromata
C. Sweat Pore
D. Mesophyll
Answer:
D: Carbon Dioxide
B: Stromata
In what area of the world does the low pressure area stay in the winter? Why?
Answer:
Atlantic because minuses 0 degrees
true or false:
One difference between somatic cells and gametes is that somatic cells are identical to one another, while gametes are not
Answer:
true.
Explanation:
all the somatic cells of an organism have same number of chromosomes while gametes are haploid and have half number of chromosomes. so gametes are different from somatic cells.
What is the world's smallest country?
Answer:
Vatican City is the smallest country in the world, with an area of 526,235.6 square yards.
Explanation:
Which energy source provides most of the world's energy consumption?
natural gas
hydroelectric
solar
fossil fuels
Answer:
The energy source which provides most of the world's energy consumption is
Explanation:
Ans = Hydroelectric
Which of the following statements about the cells of any multicellular organism is true? More than one answer may be correct.
Answer:
C.) (Different genes are expressed in different types of sells.)Explanation:
I hope its help;)(;The bark of a tree trunk includes which of the following tissues?
A. primary and secondary phloem
B. Heartwood and phloem
C. Heartwood and sapwood
D. Secondary phloem and layers of periderm
which organelles are important to the life process of metabolism
Answer:
Cellular Metabolism
Explanation:
Im pretty sure thats it!
Answer:
the mitochondrion and the chloroplast.
Explanation:
Diagrams 1 and 2 show cells from an organism with a diploid chromosome number of 4.
> >
x x
1
2
Refer to the illustration above. Which of the cells will be a diploid cell at the completion
of division?
Both the cells will be diploid cells at the completion of division. Therefore, the correct option is B.
In diagram 1, the chromosomes are in the metaphase of cell division, that is aligned at the centre of the cell. In the next phase which is anaphase, these chromosomes are pulled apart by the spindle fibres in opposite directions. As a result, the chromosomes are split into half and each cell gets half the number of chromosomes in the form of chromatids. Thus, each cell will have 4 chromatids.
In diagram 2, the chromosomes are in the early anaphase stage. When the cell will split into two, each daughter cell will have 2 chromosomes. These chromosomes separate in the telophase and thus, each cell will have 4 chromatids.
Learn more about cell division in:
https://brainly.com/question/15286135
#SPJ1
There are 252 deer in a population. There is no net immigration or emigration. If 47 deer die and 32 deer are born in one month, what is the population size at the end of the month? Round your answer to the nearest whole number
Answer:
240
Explanation:
252-47=205
205+32=237
237 to the nearest whole number is 240
hope it helps
Emily's dog has puppies. 3 puppies are brown and 2 puppies have spots. The difference in their coat color is known as A trait B feature r variation
Answer:
What
Explanation:
Answer:
This is known as A. Trait