Explanation:
Between 15,000 and 25,000 years ago.
During translation, amino acids are carried to the ribosome by.
Answer:
tRNA
Explanation:
The sky of early Earth was probably pinkish-orange. As life became established, the sky turned blue. What was responsible for the color change?
PSYCHOLOGY: Personal characteristics such as one’s __________ and __________ are often stable throughout one’s lifetime. A. temperament . . . emotionality B. attitude . . . intelligence C. temperament . . . attitude D. emotionality . . intelligence
Answer: A. temperament . . . emotionality
Answer:
A : temperament . . . emotionality
Explanation:
A subset of a population selected to represent the population is:.
Neutrons are neutral. This means that
A.
neutrons are not involved in chemical reactions.
B.
neutrons do not have a charge.
C.
neutrons are neither acidic nor basic.
D.
neutrons do not have mass.
Answer:
The ansow is B: Netrons do not have a charge.
Answer:
its b
Explanation:
I will mark brainiest
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.
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.
1. Predict: What do you think the offspring of a black mouse and a white mouse will look like?
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)
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.
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
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:
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:
If a ballon uses heat as energy to rise, how do you think it is able to come back down to the ground? Where does the energy go?
Answer:
I think the heat cools and the bloon is brought back down
Explanation:
hope this helps
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.
(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
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
How many chloroplasts are present in a typical plant cell?
Answer:
10-100 chloroplasts
Explanation:
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
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?
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
Pls help ASAP WILL GIVE BRAINLIEST 100POINTS!
15. A diploid cell is one that a. has two homologues of each chromosome. b. is designated by the symbol 2n. C. has chromosomes found in pairs. d. All of the above
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.
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!
Ethnopharmacology is a subdiscipline in the field of ethnomedicine. Identify what someone within the ethnopharmacology field might do during their research.
At which point in the cell cycle should dna repair occur?.
Answer:
G1, S, G2
Explanation:
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.
Which of the following explains why animals need more food when it is cold?
winter
Explanation:
because during winter animal are few