is the following sentence true or false? Changes in chromatin structure and histone DNA binding are associated with changes in gene activity.
Answer: The correted answer is true
Explanation:
Changes in chromatin structure and histone DNA binding are associated with changes in gene activity. True)
crick originally thought that each type of nitrogenous base hydrogen bonded with its self (A-A, T-T, etc.) why was this incorrect? what makes this impossible?
Which of the following is a negative consequence of nuclear power that concerns many environmentalists?
A
electrical shocks
B
carbon emissions
C
nuclear waste
D
smog
The cells in the gastric mucosa near the openings of the gastric pits largely specialize in secreting __________.
Answer:
mucus
Explanation:
I have no idea I got it online from somebody's quizlet.
Energy for use in our cells are stored in the form of
1) chemical bond energy
2) physical energy
3) heat energy
4) mechanical energy
Answer:chemical bond energy
Explanation:weegy
How are spores similar to seeds?
Answer:
Spores grow and spread, similar to seeds, yet only in a larger amount.
__________________________________________________________
Questions?Ask in the comments box.
I NEED HELP!!! 40 POINTS AND BRAINIEST TO THE FIRST CORRECT ANSWER
Answer:
1. is the wave crest
2. is the wave trough
3. is the amplitude
4. is the wave length
Explanation:
1. crest point on a wave is the maximum value of upward displacement within a cycle.
2. A trough is the opposite of a crest, so the minimum or lowest point in a cycle.
3. distance between two successive crests (or troughs) is the length of the wave or wavelength.
4. amplitude, in physics, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position.
How does cytokinesis differ in plant and animal cells?
A. In animals the process leads to only three cells. In plants, the process produces four cells.
B. In plants the cells are physically separated, while animal cells are still joined.
C. In plants the result is four cells; in animals the result is two cells.
D. In animals the cell's area physically separated, while plants are divided by a cell plate.
Answer:
D.
Explanation:
Animal cells have a cleavage furrow which will pinch the cytoplasm into two nearly equal parts. While plant cells have a cell plate that forms halfway between the divided nuclei.
True or False: A trait is only considered an adaptation if it is beneficial to the organisms current environment
Answer:
this statement is false:
Explanation:
natural selection is a process im which organism evolve to become better adapted to their environment
During prophase I, all four chromatids of the two homologues become closely associated as a result of pairing, forming a structure known as a(n)
During prophase I, all four chromatids of the two homologues become closely associated as a result of pairing, forming a structure known as a tetrad or bivalent.
What is a tetrad?A tetrad is a structure formed during the prophase I stage of meiosis I whereby two homologous chromosomes pair together.
Meiosis occurs in two stages of division namely;
meiosis I meiosis IIIn meiosis I, homologous chromosomes are separated but are first paired during the prophase stage to form the tetrad or bivalent structure.
Therefore, during prophase I, all four chromatids of the two homologues become closely associated as a result of pairing, forming a structure known as a tetrad or bivalent.
Learn more about tetrad at: https://brainly.com/question/12793757
The sky of early Earth was probably pinkish-orange. As life became established, the sky turned blue. What was responsible for the color change?
How many chloroplasts are present in a typical plant cell?
Answer:
10-100 chloroplasts
Explanation:
A type of speciation that involves the development of several species, each adapted to a specific environment, from a common ancestor is called _________.
Answer: It's called adaptive radiation. Hope this helps!
Helium has an atomic number of two because it has two ____________ . A atoms B protons C neutrons D molecules
Answer:
The answer to that question is A
True or False: Traits that are beneficial in one environment will always be beneficial in another environment
Answer:
False.
Explanation:
Natural selections favors traits that are beneficial in a specific environment. Traits that are helpful in one environment might actually be harmful in another.
During translation, amino acids are carried to the ribosome by.
Answer:
tRNA
Explanation:
True or False (Please help me asap)
1. CAM plants use organic acids to store their CO2 for use in light reactions
2. Phase 3 of the Calvin cycle involves the reduction of 3-phosphoglycerate to G3P.
3. in C3 plants, rubisco fixes oxygen if no CO2
4. Photosystem II can operate independently of photosystem I in a cyclic .
5. Carotenoids may act as a sort of energy buffer or “sunscreen” for plants.
6. Chlorophyll b has a methyl group at the R-position of the porphyrin ring.
7. Cyclic electron flow is the primary pathway of energy transformation in light reactions.
In this question, we will answer whether the statement is false or true about plants.
False or true1. CAM plants use organic acids to store their CO2 for use in light reactions
False
2. Phase 3 of the Calvin cycle involves the reduction of 3-phosphoglycerate to G3P.
False
3. in C3 plants, rubisco fixes oxygen if there is no CO2
True
4. Photosystem II can operate independently of photosystem I in a cyclic fashion.
True
5. Carotenoids can act as a kind of energy buffer or “sunscreen” for plants.
True
6. Chlorophyll b has a methyl group at the R-position of the porphyrin ring.
False
7. The cyclic flow of electrons is the main way of transforming energy in light reactions.
True
Learn more about plants in brainly.com/question/13976657
How does continental drift theory explain extinction of organisms?
Answer:
He argues that the “dance of continents”-the break-up, movement, collision and re-formation of continents through time-creates the basic geographic and climatic conditions which drive the decline and extinction of species.
Explanation:
Conclusion
1. How did scientists discover that all living things are made of cells?
2. How did Pasteur’s experiment with the flasks help disprove the idea that living things could just appear or come from nonliving things like water and air?
3. Why are nutrients needed for living things? Describe the difference between living and nonliving things.
Explanation:
i think nimber 3 is this
They need nutrients for their metabolism, function and distribution, and non-living organisms do not
Assess It!
A disease has spread
amongst lily pads in a
pond ecosystem.
Which is true about the
impact of this disease?
A Small fish that rely on lily pads for
protection will decrease in population
The large fish population will increase
C. The water temperature will decrease
D. The frog population will increase
Answer:
The small fish populus will decrease because they need the lilypads to hid them from the big fish.
Explanation:
Ethnopharmacology is a subdiscipline in the field of ethnomedicine. Identify what someone within the ethnopharmacology field might do during their research.
5. Warm currents cause what type of climate?
a. Dry
b. Wet
c. Frigid
Answer:
b. dry
Explanation:
because the dry climate is warm
Which of the followingdoes NOT affect population growth and decline?
a. the immigration of organisms
b. the emigration rate
c. the fraction of males to females
d. the birth rate and death rate
Pls help ASAP WILL GIVE BRAINLIEST 100POINTS!
45. What process in the nitrogen cycle on this planet is taking place in the purple
growth cells?
Answer:
When an organism excretes waste or dies, the nitrogen in its tissues is in the form of organic nitrogen (e.g. amino acids, DNA). Various fungi and prokaryotes then decompose the tissue and release inorganic nitrogen back into the ecosystem as ammonia in the process known as ammonification.
Explanation:
(20 points!)
In order to survive, animals need to adapt to their environment over many generations. Think about your favorite animal, its physical features, and its environmental challenges. Without doing any outside research, in 3-5 sentences, try to: a) describe what features have likely had to adapt to its environment over time, and b) hypothesize what ways it might have to adapt to environmental changes in the future.
Birds are animals that have wings to fly, which can be adapted (modified) to regions where winds are more intense.
What is adaptation?Adaptation refers to the emergence of traits capable of facing challenging environmental conditions.
In birds, wings are an adaptive trait of this taxonomic group, which can be modified according to the environment.
In regions where winds are more intense, wings can take different anatomical forms in order to resist these environmental conditions.
Learn more about adaptation here:
https://brainly.com/question/1213023
What type of physical weathering is caused by the expansion of water?
Answer:
Frost wedging
Explanation:
Is a natural result of the fact that water expands when it freezes.
Please Help! This is due in 5 minutes!
Whose work showed that the fossils in caves were, in fact, a result of accumulation over time rather than the result of one cataclysmic event?
A. Gideon Mantell
B. William Buckland
C. Charles Lyell
D. Richard Owen
Answer:
C. Charles Lyell
Explanation:
Lyell argued that the formation of Earth's crust took place through countless small changes occurring over vast periods of time, all according to known natural laws.
Monosaccharides disaccharides and polysaccharides are examples of.
Answer:
Sugars
Explanation:
Saccharide is another term used to describe sugars. The prefixes (mono = one, di = two, poly = more than two) represent how many glucose molecules are present in the overall molecule. Glucose is the base structure of sugars. Furthermore, all saccharides (sugars) are carbohydrates.
1. Predict: What do you think the offspring of a black mouse and a white mouse will look like?