Answer:
Studying atoms helps people by providing research to common problems found in our environment, universe, and ourselves. Such as cleaning up oil spills, identification of atoms in our universe, etc.
Explanation:
when a sperm and egg cell combine, the new cell called a zygote contains:
1: 46 chromosomes
2: 23 pairs
3: 22 chromosomes
4: no pairs
Answer:
2, 23 pairs
Explanation:
it is honestly the only one that makes sense
How are the three international conflicts similar and how are they different?
Answer:
what's the question? It is not showing anything expect for "How are the three International conflicts similar and how are they different."
which of the following observations would provide the most direct evidence in support of the scientists claim?
Answer:
suck toess
Explanation:
ttrr
what do you notice about the size of the two resulting cells?
Answer:
Females generally produce a few but large gametes, whereas males produce large numbers of much smaller gametes.
Explanation:
Which blood cell is most abundant?
Describe What
happens to a planarian when
it is cut into two pieces?
Which of the options below identify the genetic hiearchy in ascending order?
A. Chromosome, Cell, DNA, Gene and Nucleus
B. Gene, DNA, Chromosome, Nucleus and Cell
C. Cell, Nucleus, Chromosome, DNA and Gene
D. None of the above
Answer:
I hope this helps just to let you know this is what I searched just being honest :)
Explanation:
DNA
But your genes also mean that you probably look a bit like other members of your family. For example, have you been told that you have 'your mother's eyes' or 'your grandmother's nose'?
Genes influence what we look like on the outside and how we work on the inside. They contain the information our bodies need to make chemicals called proteins. Proteins form the structure of our bodies, as well playing an important role in the processes that keep us alive.
Genes are made of a chemical called DNA, which is short for 'deoxyribonucleic acid'. The DNA molecule is a double helix: that is, two long, thin strands twisted around each other like a spiral staircase.
27 DNA.gif
The DNA double helix showing base pairs
The sides are sugar and phosphate molecules. The rungs are pairs of chemicals called 'nitrogenous bases', or 'bases' for short.
There are four types of base: adenine (A), thymine (T), guanine (G) and cytosine (C). These bases link in a very specific way: A always pairs with T, and C always pairs with G.
The DNA molecule has two important properties.
It can make copies of itself. If you pull the two strands apart, each can be used to make the other one (and a new DNA molecule).
It can carry information. The order of the bases along a strand is a code - a code for making proteins.
Genes
A gene is a length of DNA that codes for a specific protein. So, for example, one gene will code for the protein insulin, which is important role in helping your body to control the amount of sugar in your blood.
Genes are the basic unit of genetics. Human beings have 20,000 to 25,000 genes. These genes account for only about 3 per cent of our DNA. The function of the remaining 97 per cent is still not clear, although scientists think it may have something to do with controlling the genes.
Chromosomes
If you took the DNA from all the cells in your body and lined it up, end to end, it would form a strand 6000 million miles long (but very, very thin)! To store this important material, DNA molecules are tightly packed around proteins called histones to make structures called chromosomes.
105-Gene-unwrapped.gif
The packaging of DNA into chromosomes
Human beings have 23 pairs of chromosomes in every cell, which makes 46 chromosomes in total. A photograph of a person's chromosomes, arranged according to size, is called a karyotype.
The sex chromosomes determine whether you are a boy (XY) or a girl (XX). The other chromosomes are called autosomes.
106-autosomes.gif
The karyotype of a male human being
The largest chromosome, chromosome 1, contains about 8000 genes. The smallest chromosome, chromosome 21, contains about 300 genes. (Chromosome 22 should be the smallest, but the scientists made a mistake when they first numbered them!).
The DNA that contains your genes is stored in your cells in a structure called the nucleus.
Fill In The Blank
What is the strongest acid listed in 2-2?
What is the weakest acid listed in 2-2?
What is the strongest base listed in 2-2?
Answer:
Strongest acid is hydrochloric acid
Weakest acid is rainwater
Strongest base is sodium hydroxide
Explanation:
pH is defined as the measure of hydrogen ion concentration in a particular solution. pH values seen between 0 and 1 are actually known to be strongest acids. Weakest acids are the ones that move towards neutrality. The neutral pH value is 7.0.
Looking at their pH values, we will discover that hydrochloric acid is the strongest acid. Rainwater is weakest acid because it moves towards neutrality. Sodium hydroxide is the strongest base.
In pH, values between 0-6 are referred to being acidic, 7 is neutral and while 8-14 are basic.
Answer:b
Explanation:
What is the function of T-lymphocytes? Select all
that apply.
to assist other lymphocytes
to produce other lymphocytes
to kill cells infected with a virus or cancer
to help in the body's immune response
to circulate oxygen throughout the body
Answer:
to assist other lymphocytes
to kill cells infected with a virus or cancer
to help in the body’s immune response
Explanation:
Following are the functions of T-lymphocytes, here:
to assist other lymphocytesto kill cells infected with a virus or cancerto help in the body's immune responseWhat are T-lymphocytes?
T-lymphocytes, also known as T cells, are a type of white blood cell that plays a key role in the immune system. They are produced in the bone marrow and mature in the thymus gland.
One of the main functions of T-lymphocytes is to assist other lymphocytes, such as B cells, in the immune response. They do this by releasing chemicals that help to activate and coordinate the immune response, and by directly attacking infected cells.
T-lymphocytes also have the ability to kill cells that are infected with a virus or cancerous cells. They do this through a process called cell-mediated immunity, in which they recognize and bind to specific proteins on the surface of infected cells. Once they have bound to the infected cells, they release chemicals that kill the cells, helping to prevent the spread of the infection or cancer.
T-lymphocytes are an important part of the body's immune system and play a vital role in helping to protect the body against infections and disease.
Learn more about T-lymphocytes, here:
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Does the difference in structure for arteries and veins make sense given then functions? Explain.
help me pleaaaasseee!!!?? explain how locusts affects crop production and how it can be prevented...
I think this will help
Explanation:
good luck. :)
What evidence have you discovered to explain what structure surround a cell, such as an ostrich egg, and how these structures help a cell function
Answer:
plasma membrane
Explanation:
An ostrich egg is the largest egg of any living bird. The eggshell of an ostrich egg is shinny, glossy and is cream in color. It is more oval than the egg of a chicken.
The structure of a cell comprises of the components with their specific functions which is essential to carry out the various processes of life. In an eukaryotic cell, the outer lining is known as the plasma membrane. It helps to protects the cell and separates it from the surroundings environment.
The plasma membrane is made up of proteins as well as lipids and other fat like molecules.
Ask me anything I’ll answer if I can
Answer:
can you answer my most recent question please
Explanation:
Which of the following is NOT a method that has been used to predict earthquakes?
Answer:
Watching changes in weather patterns (Answer Choice 3)
Explanation:
Atmospheric weather cannot indicate impending earthquakes, while the processes described in the other answer choices can.
Answer
Watching changes in weather patterns (3)
In which phase of mitosis does chromatin condense and centrioles move to opposite ends, while the nuclear envelope breaks down and spindle fibers form?
Answer: Prophase!
Explanation:
please help me i need it please
Answer:
first one is false
Explanation:
All the different organisms that interact in a pond make up
A a community
B the water cycle
C a population
D the habitat
How have plants evolved?
Give at least 5 examples.
Answer:
Over time, plants had to evolve from living in water to living on land. In early plants, a waxy layer called a cuticle evolved to help seal water in the plant and prevent water loss. ... To allow the plant to retain water and exchange gases, small pores (holes) in the leaves called stomata also evolved (Figure below)
Explanation:
1 DNA evidence suggests that the first eukaryotes (green plants) evolved from prokaryotes (through endosymbiotic events) between 2500 and 1000 million years ago. ... Cyanobacteria have a close evolutionary relationship with eukaryotes. They have the same photosynthetic pigments as the chloroplasts of algae and land plants.
2Plants adapt their growth, including key steps in their life cycle such as germination and flowering, to take advantage of environmental conditions. ... All land plants evolved from an aquatic ancestor, and it was after colonisation of the land that the gibberellin mechanism evolved.
3 700 million years ago
The researchers found that land plants had evolved on Earth by about 700 million years ago and land fungi by about 1,300 million years ago — much earlier than previous estimates of around 480 million years ago, which were based on the earliest fossils of those organisms.
4 The earliest trees were tree ferns, horsetails and lycophytes, which grew in forests in the Carboniferous period. The first tree may have been Wattieza, fossils of which have been found in New York State in 2007 dating back to the Middle Devonian (about 385 million years ago).
5 Plants adapt to their environment from necessity. Plants may also adapt by growing lower and closer to the ground to shield themselves from wind and cold. Desert environments may have some of the following adaptations, these help the plant to conserve food, energy and water and still be able to reproduce effectively.
giveme brainlyest
Name some specialized features that plants have that are used for reproduction. Please help!!
A population of rabbits in an ecosystem has genetic variation in fur thickness. Some rabbits have thick fur and others have thin fur. Due to changes in the environment, the average temperature of the ecosystem is steadily increasing.
How will this environmental change likely affect the rabbit population over time?
A. Rabbits with thick fur will become more common in the population because thick fur will be a favorable trait in this changing environment.
B. Rabbits with thin fur will become more common in the population because these rabbits are more likely to survive and successfully reproduce.
C. Rabbits with thick fur and thin fur will become equally distributed because all rabbits in the population will successfully reproduce.
D. Rabbits with both fur types will increase in the population because the temperature change will cause the population of rabbits to expand.
Answer:
B
Explanation:
Thin fur is better for warmer weather, so the rabbits with thinner fur won't over heat in the warming weather.
The population of rabbits n the genetic ecosystem has thick fur and others have thin fur, due to the changes in the climate avg temperature of the ecosystem is steadily falling.
Looking at the situation and adaptive powers or abilities of the animals the thick fur will survive longer than those of the thin fur as the temperature of the place is declining.Hence the option A is correct.
Learn more about thein an ecosystem has a genetic variation
brainly.com/question/20988797.
Pls help!!! will give u the brainliest and more points it's easy
Explanation: C.) DNA polymerase
Using a Punnett Square give all of the possible genotypes and phenotypes of the offspring resulting from the following cross: A male that is not color blind and a female that is heterozygous and not color blind.
Color blindness is a sex-linked trait and only occurs on the X chromosome.
Use “B” for normal eyes and “b” for colorblind.
Based on your answer above, do organisms with higher fitness mean that they have survived to an advanced age
Answer:
yes
Explanation:
I just know the answer
8. What is the probability that an Rr organism and an Rr organism will
produce an RR offspring? Mark all that apply.
1. Calculate the density of a piece of wood with a volume of 216cm3 and a mass
of 64g
Answer:
Density = Mass/Volume
Density = 216cm3/64g
Density = 3.375 g/cm3
Let me know if this helps!
natural selection is an example of a mechanism of evolution. does this mechanism produce a change in individuals or populations? explain
Natural selection refers to the procedure where the species better amended to their surrounding appear to survive and generate more offspring. Natural selection refers to one of the mechanisms that make modifications in the frequencies of genes in populations and thus, it is the mechanism of evolutionary change.
However, the phenomenon of genetic drift and natural selection cannot take place unless and until there is a genetic variation, that is unless some individuals are genetically distinct from others.
Monosaccharides are to carbohydrates as ___
are to proteins.
Answer:
Amino acids
Explanation:
Answer:
AMINO ACIDS
Explanation:
AMINO ACIDS ARE THE MONOMERS OF PROTEINS
How many amino acids will result from the following strand of DNA?
ACGCCCAA ATAC
A. 12 amino acids
B. 3 amino acids
C. 4 amino acids
Answer:
B, because the relationship between an mRNA codon and its corresponding amino acid is called the genetic code. The three-nucleotide code means that there is a total of 64 possible combinations (4 3, with four different nucleotides possible at each of the three different positions within the codon)
Explanation:
Hope this helps
Answer: b I think
Explanation:
7. Which activity occurs during the process of photosynthesis? *
1
A.Chemical energy from organic molecules (glucose) is converted into light energy
B.Organic molecules (glucose) are absorbed from the environment.
C.Organic molecules (glucose) are converted into inorganic food molecules
D.Light energy is stored as chemical energy in organic molecules.
Answer:
D- light energy from the sun is stored
Explanation:
Polysaccharides are made of?
a. One glucose molecule
b. Many glucose molecules
c. Many fatty acids
d. DNA
Answer:
b. Many glucose molecules
Explanation:
poly means many