Which of the following occur during the first trimester of development? (Choose ALL that apply.)
A. heartbeat can be heard
B. fetus turns to head down position
C. fetus "breathes" amniotic fluid
D. heart and brain begin to form
E. bones harden
F. arms and legs begin to develop
G. lungs fully develop
H. eyes open and blink
Answers
A
F
D
G
C
Hope that right
Related Questions
In a study of the Hopi, a Native American tribe of central Arizona, Woolf and Dukepoo (1959) found 26 albino individuals in a total population of 6000. This form of albinism is controlled by a single gene with two alleles: albinism is recessive to normal skin coloration. Calculate the expected allele frequencies and genotype frequencies if the population were in Hardy-Weinberg equilibrium. What is the allele frequency of the normal allele
Answers
Answer:
0.9342
Explanation:
The Hardy-Weinberg equation states that p² + 2pq + q² = 1,
where p is the frequency of the dominant 'normal' (n) allele and q is the frequency of the recessive 'albino' (a) allele in the population, while q² represents the frequency of the homo-zygous albino genotype (aa), p² represents the frequency of the homo-zygous normal genotype (nn) and 2pq represents the frequency of the heterozygous genotype (na).
In this case, the frequency of individuals in the population that have the genotype aa (q²) is equal to 26/6000 = 0.004333. In consequence, q is equal to √ 0.004333 = 0.0658.
Moreover, the allele frequency of the normal (n) allele p is equal to 1 - q = 1 - 0.0658 = 0.9342, so p² (nn) = (0.9342)² = 0.8727.
Finally, the frequency of the heterozygous genotype (na) is 2pq = 2 x 0.9342 x 0.0658 = 0.123.
6. Examine the specimen in the photograph below. a. Explain the origin of the two circular openings on this specimen. ____________________________________________________________ b. Tell what sort of organism most likely made these circular openings, and why they are located in this particular place on the specimen. ____________________________________________________________ ____________________________________________________________ c. What might have caused the light-colored circular patches near the top edge and on the left side of this specimen
Answers
All of these are true about carbon fiber parts EXCEPT that: damage may not be visible from the front side of the part. repairs may not be allowed by some vehicle makers. they are a combination of fiberglass and carbon fibers. the carbon fiber cloth may be visible on some panels.
Answers
Answer:
they are a combination of fiberglass and carbon fibers.
Explanation:
Carbon fiber is made from organic polymers, which consist of long strings of molecules held together by carbon atoms. About 90% carbon fibers are made up of polyacrylonitrile (PAN) process whereas very small amount about 10% are manufactured from rayon or the petroleum pitch process. carbon fibers are stronger than fiberglass and very expensive due to usage in many industries.
In which of the following scenarios does skin help to maintain body temperature?
O When jumping into cold water, one's skin releases body heat into the water.
O While walking during a hot summer day, sweat on the skin evaporates and cools the body.
O After accidentally touching a hot cookie sheet, a blister forms on one's finger where all the heat entered the body.
After a long run, an Olympic athlete stretches out her arms and legs.
Answers
Answer:
B
Explanation:
While walking during a hot summer day, sweat on the skin evaporates and cools the body.
Answer parts A, B, C, D
Photo Attached
a). a microRNA (miRNA) is a small non-coding RNA involved in transcriptional and post transcriptional regulation of gene expression. Given the mRNA molecule below, suggest an example of a complementary 10 nucleotide miRNA. circle or highlight the sequence on the mRNA template to which your miRNA will bind, give the complementary 10 nucleotide sequence and clearly label the orientation of the miRNA molecule.
mRNA region: 5’-GUAGUACUGAUGGUCCAGUACGUGCUAGGUCGCUAGUAGUUCGAUGCAGUAUUAU-3’
b). what is the consequence of this miRNA binding to the mRNA above?
c). what happens when the miRNA is not completely complementary to the mRNA it is attached to?
d). what is one theory explaining the evolution of the RNAi pathway? what important research function has RNAi served since its discovery?
Answers
Answer:
b
Explanation:
what is sonority and examples of sonority
Answers
Answer:
the quality or fact of being sonorous.
mid vowels [e o]
high vowels (close vowels) / glides (semivowels) [i u j w] (first two are close vowels, last two are semivowels)
flaps [ɾ]
laterals [l]
Explanation:
Answer:
sonority
[ suh-nawr-i-tee, -nor- ]SHOW IPA
See synonyms for sonority on Thesaurus.com
noun, plural so·nor·i·ties.
the condition or quality of being resonant or sonorous.
Examples: The first three movements are the best; the only charm of the fourth being its sonority, for the musical contents are poor
It does not possess the rough gravity of the Spanish, and has too few of the i's and e's that soften the sonority of the Italian.
The hymn began to repeat itself, the individual words lost in the sonority of the hall.
From the phonetic point of view we may think of words and groups of words as consisting of a series of sounds of varying sonority.
We may indicate the sonority very roughly by lines; if we connect their top ends, we shall obtain a curve.
A population is a collection of all the types of organisms in an area.
Please select the best answer from the choices provided
ОТ
OF
Answers
What are the inputs and outputs of the respiratory system?
I think its oxygen and carbon dioxide, but im not totally sure. Thank you! AND NO LINKS PLEASE
Answers
Answer:
oxygen and carbon dioxide
What is the greatest source of carbon that enters the ocean
from the atmosphere?
a
carbon monoxide
w
b carbon dioxide
C
bicarbonate ions
Answers
Answer:
c.)carbon dioxide
Explanation:
Most carbon enters the ocean when carbon dioxide in the atmosphere dissolves in ocean water. When carbon dioxide dissolves in water (H2O), it forms an acid called carbonic acid (H2CO3). The reaction is given by the equation: CO2 + H2O ↔ H2CO3.
Please help.What would you expect to occur if you were to repeatedly lift 25 pounds over your head for 1 minute,
rest for 1 minute, and then repeat the exercise? Why do you expect this outcome?
Answers
Answer:
Strengthen the arms.
Explanation:
If a person repeatedly lift 25 pounds of weight over the head for 1 minute and then rest for 1 minute, the outcome of this exercise is to strengthen the muscles of the arms. The lifting of weight with the help of arms, the muscles of the arms will get stronger and increase occurs in the width of the arms. This exercise done by bodybuilders to get their arms stronger as well as athlete for stronger arms and hand muscles so the outcome of lifting the weight will leads to the increase in the strength of the arms.
Return to the MyPlate food plan calculator, and make an eating plan for someone whose weight and age are different from yours. You can change the person’s age, gender, and activity level. How does this checklist differ from yours? Why do you think the person’s energy needs are different?
Answers
Answer:
Increase consumption of food to increase weight.
Explanation:
There is my friend who is very weak and thin about 52 kg weight and he is one year older than me. I wanted to increase his weight up to 70 kg so I will recommend him to eat more nutritive food having large amount of proteins because proteins made muscles in the body. I suggest him to eat more food and exercise regularly to have a muscular body. The checklist is different from my checklist due to different goals. I wanted to lower my weight and increases the weight of my friend. My friend's energy needs are different from mine due to different goals to achieve.
Answer:
Males generally need more calories than females. Because men have an overall larger body in both height and weight, they need to consume more calories. For a male who is 20 years old, 5 feet and 10 inches, weighs 198 pounds, and has moderate physical activity, he should consume about 2,800 calories per day. That is about 1,000 calories more than my average caloric intake. To consume that many calories, he should eat 2 ½ cups of fruit, 3 ½ cups of vegetables, 7 ounces of protein, 3 cups of dairy, and 10 ounces of grains per day.
Explanation:
Why are phytoplankton essential to aquatic life zones?
Answers
=Answer:Phytoplankton are essential to aquatic life zones because: they provide the basis of food chains. Log in for more information. Added 5/22/2016 9:52:12 AM This answer has been confirmed as correct and helpful.
Explanation:
Do skeletal muscles work alone?
Answers
Explanation: An example would be bending your elbow. Doing that will cause your biceps to contract and your triceps to relax.
PLEASE HELP I HAVE AN EXAM !!!
For one meiotic division all four daughter sperm cells that are produced have the wrong number of chromosomes; two cells have one extra chromosome while the other two are each missing a chromosome. During which phase of meiosis did the problem most likely occur? What is this problem called?
Answers
Answer:
Nondisjunction occurs during anaphase I of meiosis I
Explanation:
Brainliest Please?
The number of different species living in a defined area is known as which of the following?
• bioconcentration
• habitat
• preserve
• biodiversity
Answers
Answer:biodiversity
Answer:
Biodiversity
Explanation:
"Biodiversity is the biological variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity. "
- wiki
According to the EPA, what are three benefits to geothermal heat pumps?
Answers
Answer:
Environmentally Friendly. Geothermal energy is more environmentally friendly than conventional fuel sources such as coal and other fossil fuels.Renewable.Reliable. ..
Explanation:
What makes an illness reportable? Give an example of a mandatory reportable disease and a reason
why it might have made the reportable list. HELP PLEASE
Answers
Answer:
Explanation
Reportable diseases are divided into several groups: Mandatory written reporting: A report of the disease must be made in writing. Examples are gonorrhea and salmonellosis. Mandatory reporting by telephone: The provider must make a report by phone.PLS HELP
Identify the Golgi Apparatus
Answers
Answer:
D
Explanation:
It is the golgi apparatus
(I put a labeled diagram of an animal cell)
Biology, i will give brainliest
Answers
Answer:
cellular respiration
Explanation:
Which is not a fossil fuel
Group of answer choices
coal
nuclear
natural gas
Petroleum
Answers
Natural gas is not a fossil fuel
hope it is helpful to you
coal, nuclear energy, and natural gas has been around for thousands of year which is why they call them fossil fuels. petroleum is made from crude oil all though some petroleum liquids can be made from natural gas and coal. so your answer is D.
state two functions of muscles found in the alimentary canal of mammals
Answers
-Churning pushing food along peristals
Which type of reproduction provides organisms with the following disadvantages? Organisms must grow until mature enough to produce sex cells. Finding a mate uses energy and takes time.
A. Asexual Reproduction
B.Sexual Reproduction
Answers
The organism produces the sex cells and needs to find a mate in order to reproduce.
Which statement correctly describes how the mitochondrial uncoupling agent valinomycin inhibits oxidative phosphorylation without collapsing the proton (H+) gradient across the inner mitochondrial membrane?
a. Valinomycin carries Kt into the mitochondrial matrix, reducing the electrical component of the electrochemical gradient across the inner mitochondrial membrane.
b. Valinomycin carries Ht into the mitochondrial matrix, decreasing the mitochondrial membrane potential without generating ATP.
c. Valinomycin is a complex I inhibitor that prevents NADH oxidation and the pumping of H+ into the intermembrane space.
d. Valinomycin is an ATP synthase inhibitor that prevents H+ from moving down its concentration gradient into the matrix.
Answers
Answer:
a. Valinomycin carries Kt into the mitochondrial matrix, reducing the electrical component of the electrochemical gradient across the inner mitochondrial membrane.
Explanation:
Oxidative phosphorylation is a process by which cells generate ATP (the energy coin of the cells) by coupling an electrochemical potential gradient across the inner mitochondrial membrane created by the electron transport chain to phosphorylation of ADP. Moreover, an ionophore is a molecule that reversibly binds ions. Ionophores are often involved in the movement of ions across the cell membrane. Valinomycin is an ionophore that mediates the transport of potassium (K+) ions down a concentration gradient, which is capable of disrupting the gradient across the membrane by modifying the K+ gradient. Valinomycin binds to K+ ions and enables them to pass more rapidly across the mitochondrial inner membrane, thereby neutralizing the excess of negative charge inside the mitochondrial matrix and thus slowing ATP synthesis.
I would like a pretty fast answer, please.
Scientists once thought that life spontaneously arose from nonliving things. It took extensive experimentation and the invention of new technology to confirm the tenets that now make up the cell theory. Now, we don't even question that cells are the basic units of life and only come from preexisting cells. What technology had the biggest impact on the development of the cell theory?
A) centrifuge
B) electrophoresis
C) microscope
D) telescope
Answers
Answer:
Microscope.
Explanation:
Microscopes were extremely influential in the development of cell theory, as they allow us to see down to the level of cells and observe them. Through process of elimination, we know it cannot be a telescope (used for observing large, far away objects) or a centrifuge (separates substances based on density). Electrophoresis is moreso used for DNA, and not for the entire cells.
What structure will form during synapsis in Prophase I if there is a partial chromosome deletion or duplication?
a. inversion loop.
b. tetravalent complex.
c. solenoid.
d. nucleosome.
e. unpaired loop.
Answers
Answer:
The correct answer is option e, that is, unpaired loop.
Explanation:
For base pairing to take place, the duplicated or the deleted region will not possess any kind of complementary region. Thus, it produces an unpaired loop. The formation of the inversion loop takes place at the time of paracentric and pericentric inversion. A high-level packaging composition produced by chromatin is known as a solenoid. A bead on string structure produced by enveloping DNA around the core of histone proteins is termed a nucleosome.
Cell Consist of chloroplast ?
Answers
Is a plant that has the natural ability to protect itself against predation a genetically engineered organism
Answers
Answer:
No, genetically engineered organisms are engineered by humans. The plant evolved to be this way.
Explanation:
Answer:
If it's a natural ability for the plant, it's probably not genetically engineered. It depends on the plant species/fruit.
Explanation:
Predation: A biological interaction where one organism, the predator, kills and eats another organism, its prey.
Genetically Engineered Organism: An animal, plant, or microbe whose DNA has been altered using genetic engineering techniques.
In most cases with let's say a pepper plant, the plant will produce a chemical compound called capsaicin. This is what makes the peppers spicy. It really just depends on the plant we're talking about.
1. When items gain energy, molecules
A. Move slower
B. Move faster
C. Move the same
Choose one correct answer.''
Answers
Answer:
B
Explanation:
More energy creates more heat and speed.
Answer:
B. Move faster is the answer of your question .
hope it is helpful to you
HELP PLEAASEEE
Which air mass is likely to form over Minneapolis and what weather conditions would it bring?
Question 5 options:
mT bringing warm moist conditions
cT bringing warm dry conditions
mP bringing cold and moist conditions
cP bringing cold and dry conditions
Answers
Answer:
mP
Explanation:
Its gives the highs and lows of each place and as you can see a cold front is approaching witch will cause cold weather.
Its gives the highs and lows of each place and as you can see a cold front is approaching witch will cause cold weather.
What is Weather conditions?The specific atmospheric conditions in a certain place are known as the local weather. Climate is the long-term, typical pattern of weather in a particular location. The definitions of weather and climate as well as how the two terms differ may be found here.
Daily weather variations can have an impact on humans, their way of life, as well as animals and their environments. Tornadoes, hurricanes, and blizzards are just a few examples of the severe weather that may disrupt and wreck havoc.
Like the weather, the climate is subject to change, but unlike the weather, significant alterations in the climate can take hundreds or even thousands of years.
Therefore, Its gives the highs and lows of each place and as you can see a cold front is approaching witch will cause cold weather.
To learn more about weather, refer to the link:
https://brainly.com/question/14426457?
#SPJ3
Which is not a form of precipitation?
Please help ASAP
A Snow
B Fog
C Sleet
D Hail
Answers
Answer:
B: Fog
Explanation:
The four types of precipitation are snow, rain, sleet, and hail. Fog is technically a cloud.