Answer:
Proteins
Explanation:
There are proteins in the membrane that have channels for large polar molecules to move into or out of the cell since the plasma membrane is made of a phospholipid bilayer where the inside is non polar. This means large polar molecules need help from proteins to cross the plasma membrane.
what is the difference between natural selection and evolution
Answer:
Evolution is a gradual change in the inherited traits of a population over many generations.
Natural selection is a mechanism where the members of a population best suited to their environment have the best chance of surviving to pass on their genes. The natural environment selects for these members over others in the population.
Over many generations, because more of the best suited members have been reproducing, the population all now have the trait that makes them better suited for the environment.
This population has now evolved to better suit its environment, through the process of natural selection.
What two structures surround cells?
Answer:
Cell membrane surround cells, but cell wall is an extra covering outside plant cells, made up of cellulose
A cell plasma membrane and cell wall surround the eukaryotic cell.In the animal cell, there is a plasma membrane. In the plant cell, both the plasma membrane and cell wall are present.
What is the plasma membrane?The plasma membrane is the outermost covering of the cell that restricts the movement of molecules across the cell. In eukaryotic cells, the plasma membrane is hydrophobic by nature. It has carriers and ion channels in it. The plasma membrane has proteins, glycolipids, glycoproteins, etc. Apart from this, the plasma membrane of animals has cholesterol.
The plant has a cell wall outside of the plasma membrane. The cell wall is made up of cellulose. The polysaccharide cellulose is composed of glucose monomers.The cell wall is more rigid than the plasma membrane. The cell wall is present in some bacteria and fungi, but the composition of the cell wall is different from that of the eukaryotic cell.
Hence, the cell is surrounded by the plasma membrane and cell wall in eukaryotes.
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A mutant E. coli strain does not express lacZ, even in the presence of lactose. What is a possible genotype of the cells?
Answer:
The answer is "[tex]\bold{lacI^{+} lacP^{+} lacO^{+} lacZ^{-} lacY^{-} lacA^{+}}[/tex] "
Explanation:
In this question, the prescribed mutant E. Coli does not express the lacZ gene, so beta-galactosidase doesn't quite exist. Therefore in a particular strain, there is also the potential of lacZ– and that only the genetic makeup indicates its production of lactose. Therefore the above-mentioned option is correct.
1. Enzymes are examples of
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic Acids
2. Which of the following is the correct role of nucleic acids in the body?
A. They provide quick-releasing energy to the body.
B. They contain genetic information that is passed to offspring
C. They catalyze chemical reactions in the cell.
D. They are the main structural components of cell membranes.
3. Which of the following is NOT an organic molecule?
A Cellulose (C6H1005)
B. Sucrose C12H22011
C. Water H2O
D. Testosterone C19H2O2
4. Which function of lipids is NOT.jmportant for a bear hibernating in the winter?
A Long term energy
B. Insulation from the cold
C. Structural support in the cell membrane
D. Prevents water loss
5. Meat, eggs, hair, and feathers all contain this monomer
A Monosaccharide
B. Amino acid
C Nucleotide
D. Triglyceride
Can y’all please help me!!!!
Questions
1 Name the cells on either side of the pore in the stoma.
2 Describe the pattern of the somata on the leaf surface.
3 Name the gas that enters the leaf when the stomata are o
Answer:
guard cellsmonocots: evenly distributed, dicots: more dense on lower leaf Carbon dioxideExplanation:
Stomata are pores in the leaf surface of plants. they regulate the exchange of moisture and gases in plants. They open at night for the exchange absorption of Carbon dioxide and expulsion of Oxygen, while closing at the middle of the day to prevent evaporation of moisture or water in transpiration. These pores are opened or closed depending on the state of the two surrounding guard cells.
The somata are found on both the upper and the lower leaf surface. in dicots, the stomata are noticeably denser on the lower leaf surface, while they are evenly distributed on both leaf surfaces on monocots.
Which of the following is NOT an example of natural selection?
a. Plants with thorns are less likely to be eaten by herbivores than other members of the same species that lack thorns.
b. Bacterial populations in hospitals develop resistance to drugs used to combat infection by them.
c. Scientists breed cows that give greater amounts of milk than their ancestors.
d. Fruit fly larvae with an enzyme to break down alcohol are better able to feed on fermenting fruit than those that lack the enzyme.
e. Female fish that produce more eggs leave more offspring than those that produce fewer eggs.
Answer:
A
Explanation:
Answer: C
Explanation:
It is not natural selection because the scientist are making to where the next cow generations produce more milk instead of nature doing the work over time.
How does a seedling emerge from the ground?
Answer:
The seedling forms a hypocotyl hook that pushes through the soil. Once the seedling reaches the light, the hook opens to create a straight seedling. The cotyledons function as the repository for food reserves in the seed.
Explanation:
MARKING PEOPLE AS BRAINLIST!
Which of the following is not a lipid function/ property ?
A. Stores energy
B. Nerve impulse insulator C. Dissolves in water
D. Structural component of cell membrane
Answer:
c
Explanation:
Answer:
(D) is not
Explanation:
lipid- any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but solube in organic solvents. They include many natural oils,waxes,and steroids.
In an ecosystem, plants are autotrophs. The term autotroph means that plants are capable of changing sunlight into sugar. In other
words, plants are
A)
consumers
B)
decomposers
predators
D)
producers
Answer:
D) producers
Explanation:
In an ecosystem, as plants are termed autotrophs, they are the producers.
An ecosystem is made up of both living and non-living components which co-exists together.
plants are classified as producers as they take inorganic substances from the environment to produce their own food. this food is taken up by other members of the ecosystem for their own nourishment too. they are the producers and consumers depends on them for nourishment.Answer:
D) producers
Explanation:
In an ecosystem, plants are autotrophs. The term autotrophs means plants are capable of changing sunlight into sugar. In other words, plants are D) producers.
!
What type of water do corals live in?
A. cold and deep
B. cold and shallow
C. warm and shallow
D. warm and deep
Answer:
C.
Explanation:
C. Warm and shallow, even though they can be found in deeper water they do better the more shallow the water is. They also live in tropical places and in salt water. They can not survive in fresh water or cold water for very long.
Hope this helps, if so please mark the brianlist and peace and love
Answer:
they live in all of those conditions all around the world. some places warm and shallow and some places cold and deep
Explanation:
In a solution, solute substances naturally tend to move from areas of higher concentration to areas of lower
concentration.
What is the name of this process?
diffusion
passive transport
O equilibrium
osmosis
Answer:
Diffusion is the process where solute substances naturally tend to move from areas of higher concentration to areas of lower concentration.
Explanation:
In a solution, solute substances naturally tend to move from areas of higher concentration to areas of lower concentration.
What is the name of this process?
HIGH -> LOW is Passive transport where the cell does not require energy to transport substances.
Diffusion is the process where solute substances naturally tend to move from areas of higher concentration to areas of lower concentration.
What structure can help reduce the erosion of sand from beaches?
Answer:
breakwaters
Explanation:
Breakwaters are essential in preventing soil erosion in beaches by controlling water waves from causing erosion and protecting the shoreline
In a hostel, 30 students have food enough for 40 days. How many students should leave the hostel so that the food is enough for 100 days ?
Answer:
ffffffghjkoiuhbnm,,,,
Explanation:
please help me
is importe
Answer:
12 is c
Explanation:
Thats all I know
Help me and ill give you brainliest :)
Explain the three states of water and how it changes state. Use terms melt, boil, sublimation, evaporation, deposition.
-this is science-
water can exist in three states; liquid, solid and gases.
Explanation:
At temperature below zero degree Celsius, water exists as a solid but as it absorbs temperature from Its surroundings, it undergoes melting and turns into liquid water. More application of heat makes it boil leading to the evaporation and vapourisation of water molecules( note: evaporation occurs at all temperature).
Answer:
give them brainlist
Explanation:
What term that best describes the "mini organs" of the cell? *
A: Cell membranes
B: Nucleus
C: ER
D: Organelles
Answer:
D organelles
Explanation:
Its the actual name for "mini organs" in a cell.
CAN SOMEONE PLEASEEEE HELP ME WITH THIS SCIENCE QUESTION THANK YOU !!!!
The answer is B if I remember correctly
i think it is c.
tried my best
what is biomolecule
Answer:
well
bio means study of life
and yk what a molecule is
so I think it means study of molecules?
please help me
is for my daughter
Answer:
question 8. the answer is relative age ,question 9. it is oil, question 10. it's from deep inside the earth
Explanation:
Relative age is the age of a rock layer
you can't renew oil
and geo meaning or relating to earth and thermal relating to heat so it's meaning inside the earth
Identify the fuel that could be classified as a nonrenewable or renewable resource.
A) hydroelectric
B) solar
C) wind
D) wood
Answer:
Wood
Explanation:
Takes time to reproduce it.
Explain how different types of cells help organisms live and grow
all living things can be organized into different levels. organelles are suspended in cells that make up tissues, which then make up organs. these can be grouped into organ systems within whole organisms.
however, for single-celled organisms (prokaryotes)that lack tissues, organs or organ systems , their organisation starts with organelles and just ends at cells
PLEASE HELP!!!! 1OO POINTS!!
(Score for Question 1: ___ of [5] points)
1. One of the central themes in biology is how DNA, RNA, and proteins are related. Describe how genetic information flows between those types of molecules. Include the results of the processes of transcription and translation.
Answer:
Type your answer here.
(Score for Question 2: ___ of [5] points)
2. DNA remains in the nucleus. mRNA can travel in and out of the nucleus. Explain how the function of DNA and mRNA differs.
Answer:
Type your answer here.
(Score for Question 3: ___ of [5] points)
3. When scientists refer to the DNA to RNA to proteins pathway, the RNA part really represents three different types of RNA: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). How is each type of RNA important to protein production?
Answer:
Type your answer here.
Answer:
DNA, RNA, and proteins are related. Describe how genetic information flows between those types of molecules. Include the results of the processes of transcription and translation.
1. What is the first step to creating a reader's theater script?
Assign characters to the readers in your group.
Find a section in the novel with lots of good dialogue.
Find a section in the novel with lots of sensory details.
Assign lines and sentences to readers in your group.
Answer:
Find a section in the novel with lots of good dialogue.
Explanation:
Firstly, you can't assign characters or lines to the readers in your group for the first step. You need to search for a section that has good information to start it off with. Then, you can proceed to assigning whatever you like.
1. Assign characters to the readers in your group. THIS SHOULD BE THIRD since you've have already found some good dialogue and details on what to do. With that being said, it's now necessary to assign your characters. #3
2. Find a section in the novel with lots of good dialogue. THIS SHOULD BE FIRST as you need to start off with finding some good dialogue and descriptions as your "base".
#1
3. Find a section in the novel with lots of sensory details. THIS SHOULD BE SECOND as you need to find good dialogue in order to even find sensory details. Good dialogue will contain plenty of sensory details.
#2
4. Assign lines and sentences to readers in your group. THIS SHOULD BE FOURTH since you need characters to even assign lines and sentences in the first place.
#4
PLEASE HELP! WILL GIVE BRAINLIEST. Please answer every question!
Explanation:
Poland
Switzerland
They decreased
It stays relatively the same
What helps make different types of carbohydrates?
Answer:
glycosidic bonds between monosaccharides that combine to form polysaccharides
Explanation:
The building blocks of carbohydrates are individual monosaccharides (i.e., sugar molecules), such as glucose, fructose, glucuronic acid, galactosamine, glucosamine, etc. These individual monomers of carbohydrates bond to form polysaccharides such as cellulose and starches. Monosaccharides form glycosidic bonds with an alcoholic OH group of a second monosaccharide to form a disaccharide (for example, lactose), and then these larger molecules bond together to form either linear or branched polysaccharides. Starch, for example, is a polysaccharide composed of monomers of glucose molecules.
a caldera forms when ____________________
Answer:
A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption, magma present in the magma chamber underneath the volcano is expelled, often forcefully.
Answer:
whn a volcano erupts
Explanation:
Where homo erectus part of the neolithic revolution
In addition to having a more contemporary and body proportions, H. erectus was the first species of human to have a flat face, a prominent nose, and perhaps minimal body hair coverage.
Though there is little doubt that brain size has increased compared to ancestral species, capacity varies greatly depending on population. The size disparity between males and females in H. erectus may have been relatively small (i.e., there was less sexual dimorphism), which may have indicated monogamy in keeping with patterns seen in other primates. Although it is hypothesised that they interacted with one another using some form of proto-language, it is unknown whether H. erectus had the anatomical capacity for speech.
The Pleistocene archaic human species H. erectus, which means "upright man," first appeared about 2 million years ago. It is now extinct. Several human species, including H. heidelbergensis and H. antecessor, seem to have diverged from H. erectus, with the former being largely accepted as the ancestor of Neanderthals, Denisovans, and modern humans. Among the first recognisable representatives of the genus Homo are its specimens. The first known ancestor of modern humans, H. erectus, had a continental range that stretched from the Iberian Peninsula to Java.
Learn more about H. erectus
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In a periodic table, what do you know about all the elements in a period, or row? A They have the same atomic number B They have the same atomic mass. C They have the same properties. D They have different properties.
PLEASE HELP! WILL GIVE 10 POINTS AND I WILL FOLLOW YOU!
I AM BEING TIMED!
Changing which factor would NOT influence the total kinetic energy of a moving shopping cart?
A. increasing the mass of the cart by adding items while moving
B. increasing the rate of speed you push it down the aisle
C. Turning a different direction at the end of the aisle while continuing to move at the same speed.
D. Decreasing the mass or the speed of the cart
Answer:
B
Explanation:
because it will be going the same no matter what all the other answers make sense
Are the anomalies the same thickness along all ridge segments Why or why not?
plz help :D
Answer:
The equivalent magnetization (EM) and mantle Bouguer anomaly (MBA) were calculated along the ultraslow-spreading Mohns Ridge axis in the Norwegian-Greenland Sea. The magnetic anomaly and the associated EM were compared with the bathymetry, MBA, seismically determined crustal structure and geochemical data at both the inter-segment scale (>60 km) and the intra-segment scale (20–60 km). At the inter-segment scale, the magnetic highs at the segment centers are independent of the MBA. Of the 13 segments, 9 with magnetic anomalies >700 nT coincide with axial volcanic ridges identified from multibeam bathymetry maps, which suggests that the magnetic highs at the segment centers may be more associated with the extrusive lavas rather than the amount of magma supply. With few exceptions, the magnetic anomaly lows associated with MBA highs at the segment ends increase from south to north. This trend might be explained by thickened extrusive basalts and/or more serpentinized peridotites at the segment ends in the north. At the intra-segment scale, the most prominent features are the decreases in the magnetic anomalies and associated EMs from the segment centers to the ends. The intra-segment magnetic anomalies have positive and negative correlations with the bathymetry and MBA, respectively. The magnetic signal modeled by the seismically determined layer 2A with an assumed constant magnetization is remarkably consistent with the observed magnetic anomaly, which strongly suggests that the thickness of the extrusive basalts dominates the magnetic structure in each segment along the Mohns Ridge. In general, the thickness of the extrusive basalts dominates the magnetic structure along the Mohns Ridge, whereas the contributions from serpentinized peridotites may be significant at the segment ends and may produce long-wavelength magnetic variations. The magnetic data can be used as an indicator of the thickness of the extrusive basalts within segments along the ultraslow-spreading Mohns Ridge.
Explanation: