Answer:
Before: (Darwin did) Physical features and behavior
Now:
DNA Testing
Explanation:
Similarities are often easy to see when one looks at two organisms that evolved from a common ancestor, and until recently, looking at physical features and behavior was the only way to determine how closely related two organisms are. However, now scientists can also analyze DNA to discover how closely organisms are related. Every living creature has DNA, which has a lot of inherited information about how the body builds itself. Scientists can compare the DNA of two organisms; the more similar the DNA, the more closely related the organisms. This method can also help when looks are deceptive. One example of looks being deceptive is: The bat and the crow both have wings, and the squirrel does not. From this, one may think that bats and crows are more closely related than bats and squirrels, while the opposite is indeed the case.
While you’re waiting for the lactase solution to cool, read the directions on the test strips. The test strips in the Edmentum lab kit will react to glucose within a few seconds. If you use different strips, the reaction time may vary. Now follow these steps to test the solutions. Record your data in the answer space.
Milk and water solution: Fill the first test tube one fourth full of milk. Fill the small graduated cylinder with water and gently add it to the milk in the test tube until the test tube is half full. Use the stirrer to thoroughly mix the solution. Then insert the test strip for 10 to 20 seconds. Look at the test strip, and record whether it changed color. Wash the stirrer.
Milk and lactase enzyme solution: Fill the second test tube one fourth with milk and one fourth with the lactase solution. Use the stirrer to thoroughly mix the solution. Insert the test strip for 10 to 20 seconds, and record whether it changed color. Wash the stirrer.
Milk an
Which equation can be used to solve for acceleration?
Answer:
To do this you need to know equation for acceleration: a = Δv / Δt where a is acceleration, Δv is the change in velocity, and Δt is the amount of time it took for that change to occur. The unit for acceleration is meters per second per second or m/s2.
Explanation:
Hi can someone plss help me with this!!
Explanation:
4. evaporates , ocean
8. transpiration,
9. acid rain
Why do the cells in all living things need energy?
to help them decompose
to fuel their chemical reactions
to communicate with other cells
so they can block sunlight
Answer:
I think is the second one
Answer:
to fuel their chemical reactions
PLZZZZZZZ help me and thank you
Answer:
it's in the book hehe 11111111111111
Which of the following characteristics do homologous chromosomes exhibit?.
Homologous chromosomes carry alleles of the same traits and therefore, carry the genetic information for the same trait.
Homologous chromosomes are a pair of chromosomes with the same gene sequence but of different origins - one paternal and the other maternal.
Thus, homologous chromosomes carry the same traits, although could be of different forms. For example, one of the chromosomes might carry a gene for tallness while the other might carry a gene for shortness even though both tallness/shortness represent a gene for height.
More about homologous chromosomes can be found here: https://brainly.com/question/22613446?referrer=searchResults
when fatty acid metabolism creates more acetyl-coa than can be handled in the citric acid cycle, the excess acetyl-coa is converted into ________.
Answer:
Ketone Bodies
Explanation:
If excess acetyl CoA is created and overloads the capacity of the Krebs cycle, the acetyl CoA can be used to synthesize ketone bodies.
what is an important function of the urinary system?
Answer:
the kidneys are the most important function of the urinary system
Explanation:
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Place the stages of photosynthesis in order:
Answer:
First is D
Second is C
Third is B
Fourth is A
Is it True or false?
how would you expect the return of the wolves to yellowstone to affect the other species there?
Calculate the kinetic energy of a
30 g bullet fired at 200 m/s.
Step 1: Identify the formula needed to solve this problem.
The formula for kinetic energy (KE) is:
KE = 1/2m~v^2
m = mass
v = velocity
Step 2: Make a list of the values given in the question.
mass (m) = 30 g
velocity (v) = 200 m/s
[tex] \frac{1}{2} m {v}^{2} \\ \frac{1}{2} \times 30 \times {200}^{2} \\ 15 \times 40000 \\ = 600000[/tex]
Answer:
6 × 10⁵ J
Explanation:
Kinetic Energy of a moving mass is defined as, half of the product of it's mass and the square of it's velocity.
[tex] \boxed{ \mathsf{K.E. = \frac{1}{2} m( {v})^{2} }}[/tex]
Mass of the bullet (m) = 30 gvelocity (v) = 200 m/ s[tex] \implies\mathsf{K.E. = \frac{1}{2} \times 30 \times ( {200})^{2} }[/tex]
[tex] \implies\mathsf{K.E. = 15 \times 4 \times {10}^{4} }[/tex]
[tex] \implies\mathsf{K.E. = 60 \times {10}^{4} }[/tex]
[tex] \implies \underline{\mathsf{K.E. = 6 \times {10}^{5} J }}[/tex]
the organ that transfers nutrients and oxygen from mother to embryo is called the
Answer:
The fetus is connected by the umbilical cord to the placenta, the organ that develops and implants in the mother's uterus during pregnancy. Through the blood vessels in the umbilical cord, the fetus receives all the necessary nutrition, oxygen, and life support from the mother through the placenta.
meaning of Natality Rate
Answer:
It's the same as the birth rate.
What condition occurs when epidermal cells are created too quickly? a. Acne c. Psoriasis b. Skin cancer d. Chicken pox.
The condition that occurs when epidermal cells are created too quickly is known as psoriasis. In this disease, the cell cycle of skin cells is abnormally accelerated.
Psoriasis is a skin disease associated with itchy patches of thick, red skin, especially in the knees, trunk, and scalp.
Psoriasis is an autoimmune disease caused when the immune system attacks healthy skin cells.
Psoriasis is well characterized by hyperproliferative keratinocytes, which are the most prominent type of cell within the epidermis.
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an adaptation of the epithelial cells of the proximal convoluted tubule for reabsorption is
PLEASE HELP !!!!
What are their chances of having a child that has A+ blood?
Answer:
I think it must be 25%
Explanation:
Not sure how to explain
Answer:
3 in 8 people
Explanation:
If you have type A blood, your parents had one of the following possible combinations of blood types: AB and AB. AB and B. AB and A.
The main goal of photosynthesis is to produce what?
Answer:
To spread carbon dioxide and oxygen.
Explanation:
Plants produce carbon dioxide and oxygen. This is called photosynthesis.
2- El electron ocupa el nivel
de menor energia que se
encuentran libre falsa o verdadera
verdad
porque si estos tuvieran carga positiva ya no serían electrones
In a particular diploid organism, somatic cells have 24 chromosomes. How many pairs of homologous chromosomes would be present in the gametes of that organism
Answer:
12
Explanation:
It says 'pairs'.
How does carbon dioxide enter leaves?
plzz help
Which describes a promoter?
a. the first part of an operon that regulates where, when, and to what level a gene is
expressed
b. the part of an operon that, if attached by a repressor protein, suppresses the
expression of a gene
c. a cluster of genes that are expressed or repressed as a group
d.an enzyme that helps DNA unzip prior to transcription
Answer: A
Explanation: email for more help my address is
charlescarey0906(at symbol)g ma il.com
no spaces or caps
Answer:
a :)
Explanation:
the mycelium is a mesh of filaments, each of which is called
Explain how pollution from one location
can affect the environment far away from the
source of the pollution
Answer:
Air quality is affected by natural processes. Wind can move pollutants from their source to far-away locations. It can still spread and harm living creatures and destroy their environments.
Explanation:
Air quality is affected by natural processes where wind can carry pollutants to places far away from their source which can still spread and harm living beings and destroy their environments.
What is Pollution?Pollution is defined as the introduction of harmful materials into the environment where the harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash which can also be created by human activity, such as waste or runoff produced by factories. Pollutants harm the quality of air, water and land.
Many things produce pollution such as cars spewing pollutants from their exhaust pipes. Burning coal to generate electricity pollutes the air. Industries and homes generate waste and sewage that can pollute land and water. Pesticides which is chemical poisons used to kill weeds and insects which is seep into waterways and harm wildlife.
Thus, air quality is affected by natural processes where wind can carry pollutants to places far away from their source which can still spread and harm living beings and destroy their environments.
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Four friends were walking on a nature trail in their local park. They began to question whether or not the trees need to breathe, or need food like humans do. Here are their thoughts
:Katie:I think that plants need to eat but don’t need to breathe.
Hugo:I think that plants need to eat and need to breathe.
Danielle:I think that plants need to breathe but don’t need to eat.
Liam:I don’t think plants need to eat or breathe.
Circle the person you most agree with. Explain why you agree with that person
Answer: I agree with Hugo that plants do need to breathe and eat because Plants do require oxygen to respire, the process in return gives out carbon dioxide and eat thorugh the process of phoyosynthesis
at what point in sperm production do you hypothesize that loss of the testis-blood barrier would have an immunological effect on sperm production?
Answer:
when u do ittttt
Explanation:
An environment in which nonliving substances and living organisms work together is called
A) a population
B) a community
C) an ecosystem
Hi can someone help me w this? thanks!
Answer:
the answer is
c.) ecosystem
Explanation:
ecosystem is a community of living things and non living things that interact in the same environment
Extra Information:. Population- is a group of individuals of the same species living within an area
. Species - is a group of individuals that can reproduce naturally with one another and create a fertile offspring
.Community- is a group of living and non living things in the same environment
.Biotic factors - living things such as plants,animals,bacteria,fungi ... that are found in ecosystems
.Abiotic factors - non living things such as water,air,sans,light.. that are found in ecosystems
HOPE THIS HELPDS :D
Answer:
ecosystem
Explanation:
ye
Why do parasites not require complex nervous or muscular tissue?
Porque los parásitos no requieren tejido nervioso o muscular complejo?
Answer:
Hey mate.....
Explanation:
This is ur answer.....
Poorly developed nervous and muscular systems – because parasites live inside their hosts, they don't need eyes, ears or a keen sense of smell to detect potential predators nor a brain to facilitate escape. They have little need for a muscular system because they have no place to go.
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As a result of an injury in gallbladder of a person, it had been removed surgically, which of the following processes can be affected by this? *
a. The removal of amino groups of proteins.
B. The digestion of carbohydrates.
C. The breaking down of peptide bonds of proteins.
D. The digestion of fats
Answer:
D
Explanation:
1. Transcription happens in the _______ and translation happens at the _________.
a. mitochondria, chloroplasts
b. chloroplasts, mitochondria
c. nucleus, ribosome
d. ribosome, nucleus
2. Proteins are long chains of _________ assembled by _____ bringing them to the ribosomes.
a. nucleotides, mRNA
b. mRNA, nucleotides
c. amino acids, tRNA
d. tRNA, amino acids
3. What are three amino bases on the mRNA strand that codes for a specific amino acid is? What is the complementary bases on a tRNA molecule called?
a. Genetic code, DNA
b. DNA, RNA
c. Codon, anticodon
d. bird, dog
Answer:
1. C
2. C
3. C
Explanation:
Hope this helps.