Answer:
it's either c or d that's for sure because usually the baby does start to kick for the first time towards the beginning but the fetus begins to move at an early time and begins rhythmic breathing around first or second trimester I'm sorry if it's not exact answer you want but I do have it narrowed down for you
The fetus develops toenails, lips, and eyelashes and The fetus begins rhythmic breathing movements changes takes place during the first trimester of a woman's pregnancy. Thus the correct option is B and D.
What is pregnancy?
Pregnancy is the period in which a fetus develops inside a woman's womb or uterus. Pregnancy usually lasts about 40 weeks, or just over 9 months, as measured from the last menstrual period to delivery. Health care providers refer to three segments of pregnancy is called trimesters.
The baby's brain and spinal cord will develop from the neural tube. The heart and other organs also are starting to form. Structures necessary to the formation of the eyes and ears develop. Small buds appear that will soon become arms.
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7. Once anaerobic respiration takes place, are the effects permanent? Why or why not?
If a tutor can give me the answer that would be very helpful
Once anaerobic respiration takes place, the effect is not permanent. When enough oxygen is available, the cell uses the oxygen to oxidise the glucose.
What is anaerobic respiration?In anaerobic respiration, oxygen is not used for the oxidation of glucose, and as a result, very little energy is produced. Glucose undergoes glycolysis and forms pyruvate. Without the presence of oxygen, lactic acid and ethanol are formed from the glucose.
When a person runs too fast, he can't breathe properly, and muscle cells don't get enough oxygen. Due to this, glucose undergoes anaerobic respiration and forms lactic acid. As less energy is produced, more is required by the cell, and a muscle cramp takes place.
When the person gets enough oxygen, this process will reverse as the cells get enough oxygen to completely oxidise the glucose. Due to the lactic acid formation in muscles, the blood pH declines, making the blood acidic.
Hence, when enough oxygen is available, this effect of anaerobic respiration will reverse.
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A couple wants a second child that is biologically related to them. They have been trying for five years. The wife is 45 years old and healthy, with no history of sexually transmitted diseases. Three rounds of artificial insemination with her husband's sperm have failed. There is no evidence of any problem with her husband's sperm count or motility. What would be the most likely next step
Answer:
they have to do it in a religious way HOW?they have tried it in a medical way but no answer.acoding to the question that is my answer
There is no evidence of any problem with her husband's sperm count or motility. In vitro fertilization using a donor egg and her husband's sperm.
What is Invitro fertilization ?In vitro fertilization (IVF) is an assistive reproductive technology (ART) which involve in retrieving eggs from a woman’s ovaries and fertilizing them with sperm.
This fertilized egg or embryo which can then be frozen for storage or transferred to a woman’s uterus, Infertility issues for which IVF necessary include reduced fertility in women over the age of 40, blocked or damaged fallopian tubes, reduced ovarian function, endometriosis.
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16. The part of a coral polyp that creates the structure of a coral reef is
a. its external skeleton.
b. coral sand.
c. its fecal waste.
d. all of the above
Answer: It should be B
Define protein synthesis
Answer:Protein synthesis is the process in which cells make proteins
Explanation:
Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. It includes three steps: initiation, elongation, and termination
Why did land animals evolve back to aquatic environments?
Answer:
Life on Earth began in the water. So when the first animals moved onto land, they had to trade their fins for limbs, and their gills for lungs, the better to adapt to their new terrestrial environment. ... In air, eyes can see much farther than they can under water.Explanation:
Answer: Life on Earth began in the water. So when the first animals moved onto land, they had to trade their fins for limbs, and their gills for lungs, the better to adapt to their new terrestrial environment. ... In air, eyes can see much farther than they can under water. Tetrapods evolved from a group of organisms that, if they were alive today, we would call fish. They were aquatic and had scales and fleshy fins. ... Between 390 and 360 million years ago, the descendents of these organisms began to live in shallower waters, and eventually moved to land.
Explanation:
HELP PLZZ!!! I WILL MARK YOU AS THE BRAINLESS ANSWER
Which of these conditions may prevent mold from growing?
A.
high humidity
B.
freezing temperatures
C.
warm temperatures
D.
low humidity
What happens if mutations are not corrected
Answer:
A mutation cannot be corrected and can either harm, benefit or be neutral in an organism
Explanation:
A common gene mutation could be Cancer, this is a highly severe gene mutation that can cause a multitude of complications to an organism when left untreated. Some mutations such as Heterochromia, an eye mutation causing two different colored eyes, cause no harm, but makes the organism look more unique.
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Describe how mutations and meiosis lead to variation within a population and the role
of variation in the speciation of the tortoises
Answer:
best he
Explanation:
try the best answer will be
All igneous rock forms from cooling lava/magma, despite this, not all igneous rocks look the same. For example, some igneous rocks, like granite, have large crystals. The best explanation for this is
Answer:
depends on the mineral, metal, and compression content
Explanation:
without these variables we wouldnt have the different compositions and varieties of stones.
Which climate does not have warm summers?
Please help ASAP
A continental
B tropical
C polar
D dry
Answer:
c
Explanation:
Answer:
Polar
-i think-
Explanation:
In order to identify genes that function together in genetic pathways researchers can perform modifier screens, looking for second site enhancers or suppressors of a mutant. Which of the following is the most reasonable strategy for carrying out a suppressor screen in particular?
a. analyze the DNA sequence near the mutation of interest, looking for sequences that may act as silencers.
b. identify mutations that, when crossed with the original mutant, result in synthetic lethality.
c. mutagenize the original mutant and look for new mutations that reduce the severity of the original mutant phenotype.
d. screen for enhancer-trap strains that show gene expression differences in the original mutant.
e. isolate mutants with phenotypes similar to the original mutant phenotype and then cross the mutants to identify the affected genes.
Answer:
c. mutagenize the original mutant and look for new mutations that reduce the severity of the original mutant phenotype.
Explanation:
A suppressor screen is a technique employed to identify a second mutation (i.e., a suppressor mutation) capable of reverting/alleviating the phenotypic effects associated with an initial mutation. There are two types of mutants obtained from this approach: 1-Intragenic suppressors, which involve second mutations inside the gene that restore the original function of the mutated gene; and 2- Intergenic suppressors, also known as extragenic suppressors, which involve second mutations in a gene that is distinct from the original mutated gene (usually extragenic suppressors function in the same signaling pathway as the original mutated gene).
If a father is AA and a mother is AB, what is the probability for a child with AB blood? (Co-Dominance)
A 0%
B 25%
C 50%
D 75%
E 100%
Answer:
50% because there are two quantities
Explanation:
This means 1 out of 2
the fraction 1/2 = 50%
What makes a membrane semipermeable?
Explanation:
Membranes
Recall that phospholipids have a hydrophobic end and a hydrophilic end and that when placed in water they will orient themselves accordingly (5.11 pg 79). This is the basis for the plasma membrane of a cell. The cell membrane consists of a phospholipid bilayer with embedded proteins. We refer to the modern conceptual model of the cell membrane as the "fluid mosaic" model since the phospholipids are able to move about across the surface of the membrane (fluid) and the proteins are many and varied (mosaic) (5.12).
Attached to the some proteins and to some of the phospholipids are oligosaccharides (short polysaccharides). When a protein has an oligosaccharide attached it is called a glycoprotein. Glycolipids are phospholipids with the sugar chains added. These oligosaccharides are found on the outside of the membrane and are used in cell to cell recognition. They differ among species, among individuals and within individuals.
Membrane proteins can have a number of functions, such as transport proteins, enzymes (more on these shortly), receptor sites, cell adhesion, attachment to the cytoskeleton. (5.13)
The most important thing about membranes is that they regulate what moves in and out of a cell. The membrane is selectively permeable because substances do not cross it indiscriminately.
Some molecules, such as hydrocarbons and oxygen can cross the membrane. Many large molecules (such as glucose and other sugars) cannot. Water can pass through between the lipids. Ions such as H+ or Na+ cannot.
Transport proteins make passage possible for molecules and ions that would not be able to pass through a plain phospholipid bilayer. Some transport proteins have a hydrophilic tunnel through them which allows polar molecule or ions to pass. Others actually bind to the molecules and move them across the membrane. In either case transport proteins are very specific.
Passive Transport
Choose all the right answers.
How do bacteria help the nitrogen cycle?
They release nitrogen in the air.
Bacteria build plant protein.
They make nitrogen chemicals which plants can use.
Bacteria help to release chemicals from dead plants and animals.
Answer:
the answer is 1 and 3
Explanation:
The digestive system contains a variety of parts that perform specific functions within the body. The small and large
intestines have some similarities and some differences. Which function is only performed in the small intestine?
O water absorption
O vitamin absorption
O mineral absorption
O production of chyme
Answer:
d
Explanation:
Answer: d
Explanation:
In the white ovals on the map, sraw the directions and path of the winds that occur at those locations on Earth.
I need help ASAP I’ll mark brainlyest
In 1973, biologist Theodosius Dobzhansky wrote an essay titled "Nothing in Biology Makes Sense Except in the Light of
Evolution." Why is evolution so important for understanding biology? Explain your answer in 1-2 sentences. (2 points)
Evolution is the key to understanding the history of life on our planet, since it is through it that we understand the changes in life forms over time.
What is the purpose of the theory of evolution?The Theory of Evolution states that it is the environment, through natural selection, that determines the importance of the individual's characteristic or its variations, and the organisms best adapted to this environment have a greater chance of survival, leaving a greater number of descendants.
With this information, we can conclude that Evolution is the key to understanding the history of life on our planet, since it is through it that we understand the changes in life forms over time.
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Which substances should be inserted into the diagram to replace W+X?
A , B , C or D
Answer:
water and carbon dioxide
What is an energy pyramid????
Answer:
From each trophic stage in an ecosystem, a pyramid of energy reflects how much energy, originally from the sun, is retained or deposited in the form of new biomass. Around 10% of the energy is typically passed from one trophic level to the next, preventing a large number of trophic levels from forming.
Explanation:
example:
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What mechanism is responsible for the obvious signs of an intoxicated person?
muscle cells have been blocked by dopamine
nerve cells are not functioning at all
cells are prevented from releasing hormones and enzymes
nerve cells are not effectively communicating with muscle cells
Answer:
nerve cells are not effectively communicating with muscle cells
Which factor affects the climate of an area due to differences in specific heat?
Please help ASAP
A mountains
B large bodies of water
C latititude
D longitude
Answer:
c latititude
Explanation:
Latitude or distance from the equator – Temperatures drop the further an area is from the equator due to the curvature of the earth. In areas closer to the poles, sunlight has a larger area of atmosphere to pass through and the sun is at a lower angle in the sky.
Why are hurricanes considered more damaging than tornadoes when tornados have stronger winds?
a Hurricanes only strike coastlines while tornados strike coasts and inland.
ENBE
b.
Hurricanes also cause flooding and occur over a broader area.
Tornadoes move more slowly than hurricanes.
d
Tomadoes only occur inland, away from coastlines.
Answer:
B.
Explanation:
Why are hurricanes considered more damaging than tornadoes when tornados have stronger winds? ... Hurricanes also cause flooding and occur over a broader area.
what is soil plant nutrition?
Answer:
Soil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are calcium, magnesium and sulfur.
Answer:
Soil is a major source of nutrients needed by plants for growth.
Explanation:
Sounds lower than what the human ear can sense are ultrasound True or false?
Answer:
True
Explanation:
we cannot hear ultrasound waves
Suppose the stereocilia of one hair cell become permanently bent toward the kinocilium. What will most likely happen as a consequence
Answer:The options are not given, here are the options from another website.
a. A single pitch will be constantly perceived
B. A single pitch will no longer be perceivable
c. A or B depending on the hair cell's location
d. A or B depending on the bending's direction.
The correct option is d.
A or B depending on the bending's direction
Explanation:
This is because stereocilia are normal bent where there is a shearing force that occur when there is a up and down movements of the basilar membrane . When stereocilia bend towards the kinocilium, it make it depolarizes the cell and lead to the afferent activity to rise up and when the stereocilia bend away from the kinocilium , it hyperpolarizes the cell and lead to a reduction in afferent activity.
The consequences of this are that a single pitch will be noticed, or no pitch will be noticed. This will depend on the direction the stereocilia have bent.
We can come to this answer because:
Stereocilia are cellular accessories that help cells move around.They can curve up or down, generating different but very important effects.If the curvature is made towards the kinocilium, we can notice the formation of a pitch, as the cell becomes polarized.If the curvature is in the opposite direction to the kinocilium, the cell will be depolarized and it will not be possible to visualize the pitch.In this case, we can state that the consequences of the curvature of the stereocilia will depend on the side towards which this curvature is directed.
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state the role of light photosynthesis
Answer:
the role of light photosynthesis is to absorb the sunlight so the the photosynthesis can happen if there is no light, or sunlight them photosynthesis cannot happen, light I intensity is a very important role to photosynthesis
Explanation:
hope that helped
The simple sugar in DNA is
O glucose
Deoxyribose
o
ribose
0
starch
Answer:
deoxyribose
Explanation:
answer above
Which process requires energy from food to help a cell maintain homeostasis?
A. a phosphate ion being released from ATP
B. a phosphate ion being added to ADP
C. the conversion of glucose to oxygen
D. the creation of RNA from DNA
Answer:
B
Explanation:
A genotype is...
A. The genetic makeup of an organism
B. The trait that is expressed over another trait
C. The physical traits you can see in an organism
D. the trait that is not expressed when a dominant trait is present
Answer:
Option A is absolutely correct
Explanation:
The genotype of an organism is its complete set of genetic material. However, the term is often used to refer to a single gene or set of genes, such as the genotype for eye color. The genes partly determine the observable characteristics of an organism, such as hair color, height, etc.
In a broad sense, the term "genotype" refers to the genetic makeup of an organism; in other words, it describes an organism's complete set of genes. In a more narrow sense, the term can be used to refer to the alleles, or variant forms of a gene, that are carried by an organism.
Answer:
A. The genetic makeup of an organism
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