There are usually ethical concerns when the topic of biotechnology is discussed. The use of Henrietta Lacks
cancerous cells from her cervix is one of the first cases of what is and what is not ethical when it comes to
using human tissue for research
What was the greatest ethical concern in regards to the researchers obtaining and using Hela cells for
research?
Answers
Answer: The Testing of family members when researchers found HeLa cells has contaminated other specimen.
Explanation:
Related Questions
Which two atoms form a covalent bond?
Answers
Answer:
In a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom.
Explanation:
Answer True or False.
1. Most plants have three main parts. true
2. A plant's leaves carry water to the roots.
3. Chlorophyll helps plants make food true
4. Roots hold plants in the soil.
5. Stems give off carbon dioxide into the air.
6. Some plants have roots that are branched
7
Root hairs take in oxygen from the air.
Answers
Which cell structures are seen in prokaryotic and eukaryotic cells?
nucleus
cell membrane
mitochondria
DNA
ribosomes
cytoplasm
DONE
Answers
one different between prokaryotes, and eukaryotes is that prokaryotes do not have.
A: a nucleus,
B: cytoplasm
C: a cell membrane
D: DNA
Answers
Answer:
A a nucleus
Explanation:
since prokaryotes have their DNA in the cytoplasm they do not have a nucleus
elements that has atoms of more than one molecular mass
Answers
Which set of events occurs in the S phase?
a. cell growth and DNA replication
b. cell growth and mitosis
c. mitosis and cytokinesis
d. DNA replication only
Answers
Answer:
D
Explanation:
DNA replication occurs during this S (synthesis) phase.
Which bar graph best represents the equatorial diameters of the eight planets of our solar system?
Answers
Answer: The First one/ A /Top Left corner
Explanation:
Equatorial distance shows the size of a planet. The larger the distance, the larger the planet.
Option A puts Jupiter as having the largest distance which is correct as Jupiter is the largest planet and is followed by Saturn and then Uranus and Neptune in that order.
Option A also shows Earth as being larger than Mars, Venus and Mercury which is accurate as well.
Option A is the best choice.
how can hunters and wildlife managers work together to maintain ecosystems in park and preserves
Answers
Answer:
Filling out questionnaires.
Participating in surveys.
Stopping at hunter check stations.
Providing samples from harvested animals.
Funding wildlife management through license fees.
Which organic compound is NOT correctly paired with its monomer?
A) Carbohydrate --- monosaccharide
B) Lipid - Dextrose
C) Protein - Amino Acid
D) Nucleic Acid - Nucleotide
Answers
When a red flowered pea plant was crossed with a white flowered pea plant, it was found that all plants in the F1generation carried only red flowers. If these plants are self crossed, i) Find the genotypic ratio that we can expect in F2 generation ii) What is the phenotype and genotype of F1 generation. Draw Punnett square for F2
Answers
Answer:
The correct answer is -
i) genotype of F2 - 1:2:1 = dominant:heterozygous:recessive
ii) genotype of F1 - all heterozygous dominant
phenotype - all red
Explanation:
In the cross of red- flowered plant and white flowered plant the offspring produces red flowers that s only possible if the parent red flower plant has both alleles in dominant condition.
For the F1 the gametes will be R, R and r, r
from the Punnett square, we can see all the offspring are heterozygous (Rr) in genotype and red in phenotype
For F2 the gametes will be - R, r, and R, r
From the punnet square, the genotype we get is 1:2:1 = dominant:heterozygous:recessive
Stuart is listing the changes to matter and energy that occur during the process of photosynthesis. Which of these examples should he include in his list?
A. nuclear changes that convert hydrogen and oxygen into carbon
B. chemical changes that convert carbohydrates into smaller molecules
C. changes that convert light energy into chemical energy stored in carbohydrates
D. changes that convert chemical energy into heat and light
Answers
Answer:
C. Changes that convert light energy into chemical energy stored in carbohydrates
Explanation:
Just had this question on a bio assignment.
Photosynthesis occurs in plants containing chlorophyll in which the solar energy entrapped is converted into the chemical fuel needed for energy generation.
The correct answer is:
Option C. Changes that convert light energy into chemical energy stored in carbohydrates.
This can be explained as:
The leaves of plants capture the rays and with the help of water and carbon dioxide create glucose and oxygen.The nourishment or the nutrient includes carbohydrates that get broken in the presence of solar energy and experience chemical changes.Therefore, during photosynthesis light energy is transformed into chemical power.
To learn more about photosynthesis follow the link:
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a deer eats a leaf from a tree and gets energy from sugar molecules in the leaf. which two organelles are required to make this process possible
Answers
Answer:
Not 100% if this will help or if this is what you are looking for but...
When an animal eats the plant, the animal can use the plant's sugars as energy. This is how all animals get their energy from plants. Photosynthesis happens in organelles called chloroplasts.
Explanation:
Hope this helps a little.
Lipase is best classified as which type of protein?
Answers
A student is examining the liquid mercury inside a thermometer. If the liquid is composed of only mercury atoms, what can the student conclude?
A :the liquid is an impure substance because it is in a liquid state.
The liquid is a pure substance because it is made up of elements
The liquid is an impure substance because it is inside a thermometer.
The liquid is a pure substance because it is made up of mixtures.
Answers
Answer:
b
Explanation:
DID IT
Mercury is used in thermometers to estimate temperatures. Liquid mercury composed of Hg atoms is a pure substance that consists of single elements. Thus, option B is correct.
What are pure substances?Pure substances are chemicals that are matter and have been known to have distinct chemical properties because of their constant and definite composition. The physical methods of separation can not be used to separate the pure substances.
The liquid mercury is a pure substance as it has been composed of only one type of elemental atom Hg. All of its composition has been carrying the Hg atoms uniformly that possess and exhibit the same chemical and physical characteristics.
Therefore, option B. the liquid mercury is a pure substance as it is made of the same type of element.
Learn more about pure substances, here:
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Which of these conditions is least likely to cause a species to become extinct due to environmental changes?
A.Specific food preferences
B.More competition for food
C.More genetic variation
D.Less genetic variation
I will give brainly for the right answer.
Answers
Answer:
B. More competition for food
Please help me with this. Will Mark Brainliest
Which of these belongs to a trophic level with the most energy?
Berries
Grasshopper
Mice
Owl
Answers
Answer:
berries
Explanation:
yw
Answer:
a berries
Explanation:
brainliest
Water is able to dissolve more substances than any other liquid. This is an example of which property?
O Density
O Adhesion/Cohesion
O Universal Solvent
Answers
Answer:
Universal Solvent
Explanation:
Water is known as a universal solvent as it is capable to dissolve more substances than any other liquid.
This is how molecules of water are attracted to other types of molecules.
A true universal solvent doesn't exist but water is the closest to it, as its polar property allows water to dissolve substances.
The part of the plant where you would find the most cellulose is ? ( dont say cell walls , im looking where at
a-leaves
b-roots
c-branch
d-stem
Answers
Answer:
d-stem
Explanation:
Cellulose is most abundant in meristems tissues which are present in the tips of the root and stem and in the cambium between the xylem and the phloem and under the epidermis of the trees and shrubs, therefore it is abundant in the stems.
Meristems are also found in other parts of the plant but it is mostly abundant in the stems.
Meristems are the cells that are responsible for the cell growth and elongation.
In 1898 Friedrich Loeffler and Paul Frosch found evidence that the cause of the highly contagious hoof-and-mouth disease in livestock was a microscopic infectious particle. It was discovered that this particle cannot reproduce on its own. Which of these is most likely responsible for causing hoof-and-mouth disease in livestock?
Answers
Answer:
a virus, because it requires a host cell to reproduce
Explanation:
a bacterium, because it is contagious a fungus, because it infects livestock a protist, because it is microscopic a virus, because it requires a host cell to reproduceThe correct answer would be a virus because a virus is the only microbe that cannot reproduce on its own without a host. A virus utilizes the genetic mechanism of its host to reproduce either lytically or lysogenically.
In lytic cycle, the virus utilizes the genome system of the host to produce more viruses that eventually leave or lyses the host to become independent viral particles, killing the host in the process.
In lysogenic cycle, the virus inserts its genome into that of the host and uses the host's replication machinery to replicate its genome. The virus then waits for the defense mechanism of the host to become weakened before multiplying and lysing the host.
Human impact on our ecology review
Answers
Answer:
Humans have impacted nature in a lot of ways. I also think that society has shifted humanity away from what matters most in life, we've changed as a species and I want to keep it as real as possible. but uh... what was your question?
Explanation:
May I have brainliest please? :)
Answer:
Impacts from human activity on land and in the water can influence ecosystems profoundly. Climate change, ocean acidification, permafrost melting, habitat loss, eutrophication, stormwater runoff, air pollution, contaminants, and invasive species are among many problems facing ecosystems.
Explanation:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
At the end of mitosis two identical cells are produced.
true
false
Answers
Answer:
True
Explanation:
At the end of mitosis, one cell produces two genetically identical daughter cells.
How are young plants are supported
Answers
Answer:
You are a wh0re
Explanation:
What is the best explanation for the faster times of the group fed a pre-race meal of bread with bananas and honey
Answers
Answer:
Bread, bananas and honey have carbohydrates.
Explanation:
The group fed a pre-race meal of bread with bananas and honey because bread, bananas and honey have high amount of carbohydrates which give quick energy to the athlete. This carbohydrate is a macromolecule which is quickly converted into micromolecule i. e. glucose that is absorbed by the cell and the mitochondria of the cell produces energy in the form of ATP that is used by the athlete in running.
What type of macromolecule is starch?
Answers
Answer:polysaccharide
Explanation:
A starch macromolecule is a polysaccharide composed of thousands of glucose units. glucose molecules can be added to starch by a condensation reaction.
Please helpppppppppppppppp
Answers
Answer:
c
Explanation:
If an organism has 48 as its diploid number, how many chromosomes will each cell have at the end
of meiosis I?
O 24
O 12
0 48
O 96
Answers
Answer: The answer is 96
Explanation:
All 12 body systems interact to maintain ________________.
Answers
Answer:
homeostasis!
Explanation:
Answer:
The body systems constantly interact with each other to maintain homeostasis.
1
Write an expression that is equivalent to
a - 4.
NI
a-
4=
2
a-
?
2
24
Answers
Answer:243
Explanation: multiply all of them then add and it will be 243
The expression that is equivalent to a - 4 is: (a - 2) - 2 or (a - 6) + 2 or (a - 4) + 0 or (a - 8) + 4.
What is an expression?An expression in mathematics is a set of variables, constants, and operators that can be evaluated to produce a value.
For example, the expression "2x + 3" contains the variable x, the constants 2 and 3, and the operators + and *.
When we substitute a value for x, such as x = 4, we can evaluate the expression to get a value, in this case 11.
The expression that is basically equivalent to a - 4 is:
(a - 2) - 2 or (a - 6) + 2 or (a - 4) + 0 or (a - 8) + 4.
For example,
If a = 6, then a - 4 = 6 - 4 = 2, and we can also write it as (6 - 2) - 2 or (6 - 6) + 2 or (6 - 4) + 0 or (6 - 8) + 4. All of these expressions simplify to 2.
Thus, this can be the expression asked.
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Describe the movement of the water molecules at hot temperatures.
Answers
Answer:
Temperature causes water molecules to move more quickly, because each individual molecule has more energy as it gets hotter (according to Kinetic molecular theory). If you get water hot enough, the molecules move so much that the hydrogen bonds that hold them together start to break and the water becomes a gas
Explanation:
classify the following materials as rock or mineral
Answers
Answer:
You did not provide us with the materials you need to be classified, but I hope this helps:
A mineral is a solid formation that occurs naturally in the earth while a rock is a solid combination of more than one mineral formations which is also occurring naturally. A mineral has a unique chemical composition and is necessarily defined by its crystalline structure and shape.
Examples of rocks include: sandstone, basalt, limestone, and slate
Examples of minerals include: cobalt, zinc, lithium, and gold