Answer:
Transitional fossils show how a particular taxa accumulated adaptations to fit particular environments and/or ecological niches
Explanation:
Transitional fossils are fossilized remains of taxonomic groups/species that illustrate an evolutionary transition between a known version of a taxa/species and the current taxa/species. Transitional fossils are fundamental because they can be clearly differentiated from the ancestral group as well as of its derived descendant group. For example, there exist transitional fossils known as "mammal-like reptiles"(i.e., therapsids that gave rise to the true mammals), which are clearly different from current mammals.
3. Which of the following represents correctly paired nitrogen bases? (a) Adenine- Cytosine; (b) Cytosine-Thymine; (c) Guanine-Thymine; (d) Guanine-Cytosine.
Answer: The option that correctly represents paired nitrogen bases is D ( Guanine-Cytosine)
Explanation:
Deoxyribonucleic acid( DNA) is found in chromosomes which are located in the nucleus of cells. One of its main functions is to store the organism's hereditary traits and direct the day to day metabolic activities of each cell in the organism.
The DNA molecule consists of two strands that curve spirally to form a double helix structure which consists of:
--> phosphate,
--> A sugar called deoxyribose, and
--> Four nitrogenous bases—adenine, guanine, cytosine, and thymine
The four different NITROGEN BASES pair together in a way known as complementary pairing. ADENINE always pairs with THYMINE, and CYTOSINE always pairs with GUANINE.This is because of their molecular structures. Each base contains one or two nitrogen rings, which makes it long or short. It also has a sticky end of binding sites that connects with exactly one other base.
--> Adenine is long and has two binding sites.
--> Thymine is short and has two binding sites.
--> Guanine is long and has three binding sites.
--> Cytosine is short and has three binding sites.
From the above analysis, GUANINE can only bind to CYTOSINE.
Why can even low levels of a toxin have serious effects, if the toxin doesn't break down easily, like mercury?
Answer:
below
Explanation:
also depends on the immune system some people it'll effect greater due to a weaker immune system
Selecting resources with reliable credentials and expertise is _____________________________.
A. important for scientific research only
B. important for any information you look up, on any topic
C. not important, everyone’s ideas are equally valid
D. only important when you are looking for medical advice
Answer:
B. important for any information you look up, on any topic
Explanation:
You want reliable information whenever you are trying to understand something that is unknown to you (not just when you are doing research or need medical advice), and you get reliable information from people with the right credentials and expertise on the given matter.
Hello ! I need to make on Poetry about the snake to make everything what I know about him , means were it lives , what his ears , what is look like , different colour,there is venomous,etc , some on can help me please? Thank you
Answer:
try to explain a little more of exactly what you need. a poem about a snake am I correct?
what energy source does the nervous system prefer
Answer:
NIH
Explanation:
It's a primary energy required
what are two characteristics of fluids
Answer:
-Viscosity
-the absence of shape memory
✦ ✦ ✦ Beep Boop - Blu Bot! At Your Service! Scanning Question . . .
Code: Green! Letters and Variables Received! ✦ ✦ ✦
--------------------------------------------------------------------------------------------------------------Question: What are two characteristics of fluids?
--------------------------------------------------------------------------------------------------------------Answer: Let's use body fluids for example.
1. Fluids can be either liquids or gases. Gas is easy to compress and expands to fill its container while the liquid is hard to compress.
2. Blood and Lymph are the two main body fluids.
-------------------------------------------------------------------------------------------------------------
Plant and animal cells are complex and contain many structures.
a. True
b. False
Answer:
false ig because animal cell is not complex(i am not sure)
How is the nitrogen cycle important to humans?
O It produces free nitrogen that humans can breathe.
O It converts nitrogen into a form that humans can obtain by eating other organisms.
o It produces nitrogen compounds that humang can breathe.
O It converts nitrogen into a form that humans can obtain by absorbing it through their skin.
Answer:
It converts nitrogen into a form that humans can obtain by eating other organisms.
I need this help! Please!
Which of the following is the main purpose of using an anchored network of booms which funnel debris to a collection area?
Keeping birds from being tangled in fishing line
Providing habitat for lobsters
Reducing overall bycatch from drift netting
Removing floating plastic from the water
Answer:
I believe the answer is 4.
Explanation:
While not an expert on such things, I can draw a conclusion from context clues that the netting would only be used to capture the severe amount of trash found in the ocean.
Which of the following are differences between DNA and RNA? Mark all that apply.
a- DNA nucleotides include: Adenine, Cytosine, Guanine and Thymine
b- RNA nucleotides include: Adenine, Cytosine, Guanine and Uracil
c- DNA normally exists as double stranded
d- RNA normally exists as single stranded
e- RNA normally exists as double stranded
f- DNA normally exists as single stranded
g- The sugar in DNA is a ribose
h- The sugar in RNA is a deoxyribose
Answer:
The correct answer is - a, b, c, d, g and h.
Explanation:
DNA and RNA both are nucleic acids and have considered genetic materials. There are certain difference in these molecules such as-
Different sugars present in the nucleotide, Deoxyribose sugar in DNA and ribose sugar in RNA.
There are different nitrogenous bases also present as RNA has uracil instead of thymine.
DNA normally found in double-stranded while RNA exists in single-stranded.
The term “trisomy” means
A there are 3 sets of chromosomes.
B there are 3 of the same chromosome.
C there are 3 genes on the chromosome.
Help ASAP
Answer:
B
Explanation:
trisomy means there are 3 of the same chromosome
Bye :-)
1. Deciduous trees lose their leaves seasonally and include trees such as cedar and maple.
a. True
b. False
2. Hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as mango, elm, and pine.
a. True
b. False
3. Conifer leaves are generally thin and needle-like, while seeds are contained in cones. Conifers include pine and elm.
a. True
b. False
4. Evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, mango, and pine.'
a. True
b. False
What process allows a single cell to grow into a multi-cellular organism?
Answer:
Mitosis
Explanation:
Mitosis is a process where a single cell divides into two identical daughter cells (cell division). As a cell constantly splits and the daughter cells constantly splits, it eventually creates a multi-cellular organism!
Your bicycle has the mass of 9 Kg , you accelerate at the rate of 2 m/s2 . calculate the net force that is accelerating the bicycle. ( use the formula a= F/m) please this is urgent
Answer:
18kgm/s2
Explanation:
a=f/m
f=a.m
2m/s2 . 9kg
18kgm/s2
The young, coiled-up leaf in true ferns is called what
fiddleheads is the answer ~~~~
cual es la causa para que los oceanos se expanden entre 3 y 10 cm por año
Answer:
El calentamiento global causa que el nivel del mar se eleve, debido a que el hielo en las plataformas continentales se derrite y que el agua del océano se expande al calentarse.
Which genetic locus is not used for calculating the rarity of a DNA profile?
Question 25 options:
1)
TPOX
2)
FGA
3)
D3S1358
4)
vWA
5)
Amelogenin
Answer:
TOPX
Explanation:
Can someone pls do my biology edgunuity I’ll
Pay you
Answer true or false.
1._____The central nervous system consists of the brain, spinal cord, and nerves.
2._____The autonomic system is part of the nervous system that controls involuntary
actions in the body.
3._____A fish has a more highly developed brain than an ape.
4.______The spinal cord is part of the respiratory system.
5._____The three main parts of the brain in vertebrates are the cerebrum, the
cerebellum, and the brain stem.
Answer:
1. False
2. -----
3. False
4. False
5. True
I'm not sure of the 2nd question
Hope it helps:)
Passive smoking may be banned in cars. Explain
how this may affect the number of cases of
lung cancer. [2]
Answer:
It would decrease the number of lung cancer cases
Explanation:
Many patients with lung cancer don't have to be actively smoking so they can actually get lung cancer by secondhand smoking(passive) especially in cars as the air is polluted and the car is like a small compartment with polluted air( lung cancer occurs over long periods of prolonged exposure especially in children)
what is aa?? (in like volcanic terms)
Answer:
'A'ā (pronounced "ah-ah") is a Hawaiian term for lava flows that have a rough rubbly surface composed of broken lava blocks called clinkers. The incredibly spiny surface of a solidified 'A'ā flow makes walking very difficult and slow.
Which of the following statements is correct regarding engineering maize plants with a herbicide-resistance gene using Agrobacterium-mediated plant transformation?
a. The Ti-plasmid used for this experiment must contain tumor-inducing genes.
b. The herbicide-resistance gene is cloned into the T-DNA region of the Ti-plasmid.
c. The herbicide-resistance gene is cloned into a region outside of the T-DNA in the Ti-plasmid.
d. A guide RNA is used to transfer T-DNA from Agrobacterium to the plant cell.
e. The whole Ti-plasmid containing the herbicide-resistance gene is inserted into the maize genome after infection with Agrobacterium
Answer:
b. The herbicide-resistance gene is cloned into the T-DNA region of the Ti-plasmid.
Explanation:
Ti-plasmid has the ability to introduce part of its DNA (t-DNA) into the genome of host plants. This is very important for the relationship of genetic manipulation in maize plants, with the aim of inducing a gene that promotes herbicide resistance. In addition, T-DNA has many genes that code for the production of plant growth phytohormones, which is extremely important for the cloning process to work. In this case, we can assume that the correct answer for yours is the letter B.
What would you say is the most significant result of the technology revolution in archaeology ?
Answer:
Improvement of preservation techniques.
Explanation:
The most significant result of the technology revolution in archaeology is the improvement of preservation techniques used for archaeological sites. Modern technology also allows researchers to go to a site in order to find out the answers of additional questions. Modern archaeologists are fighting climate change, discovering how cultures evolved with the passage of time, and using technology to better understand human evolution.
Recall that the frequencies of the two alleles in this population can be represented by p and q, and they can be used to predict the genotype frequencies of the next generation. In this case, the frequency of the T allele (calculated in question 4 above) is equal to p, and the frequency of the t allele (calculated in question 5 above) is equal to q. Drag the numbers on the left to the appropriate blanks on the right to answer these questions. Answers can be used once, more than once, or not at all.
Answer:
hii check this
Explanation:
A paragraph is a series of related sentences developing a central idea, called the topic. Try to think about paragraphs in terms of thematic unity: a paragraph is a sentence or a group of sentences that supports one central, unified idea.
find the equation of the line joine points (2,2) and (-2,5).
Answer:
5x+4y-18=0.
Explanation:
1. the common view of the formula is:
[tex]\frac{x-x_1}{x_2-x_1} =\frac{y-y_1}{y_2-y_1};[/tex]
2. according to the formula above the required equation is:
[tex]\frac{x-2}{-2-2} =\frac{y-2}{5-2}; \ <=> \ 5x+4y-18=0.[/tex]
What are the two forces that must balance out to maintain a state of isostasy?
Answer:
Isostasy is the rising or settling of a portion of the Earth's lithosphere that occurs when weight is removed or added in order to maintain equilibrium between buoyancy forces that push the lithosphere upward, and gravity forces that pull the lithosphere downward.
Explanation:
Carboxyl phosphate (aka carbonyl phosphate) is the substrate that reacts with biotin to form the carboxylated biotin intermediate.
a. True
b. Fals
Answer:
TRUE ( A )
Explanation:
Biotin is a coenzyme that reacts with carboxylase enzymes like Carboxyl phosphate in the formation of carboxylated biotin intermediate
Biotin is also an important for sensitive metabolic pathways ( example ; fatty acid synthesis and amino acid catabolism )
Describe the process of aerobic respiration.
Answer:
Explanation:
Aerobic respiration is the process of producing cellular energy involving oxygen. Cells break down food in the mitochondria in a long, multistep process that produces roughly 36 ATP. ... Aerobic respiration is the process of breaking down the food that comes into a cell using oxygen to help power that process.
What is the energy source used for muscle contraction?