The most highly sensitive time within the developing embryo for the risk of malformation related to environmental teratogens is cleft palate at 8 weeks gestation. It is an opening in the roof of the mouth.
A teratogen is any substance and/or physical agent that may cause an irreversible abnormality in the structure of the developing embryo or fetus (e.g., classical pesticides such as DDT).
Cleft palate is a malformation mainly caused by mutagenic agents (teratogens) during pregnancy, which affects approximately one (1) of 650 births.
A cleft palate is a malformation that occurs when the two plates of the skull that form the roof of the mouth cannot be completely joined.
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Define The Meaning Of Organelle "_________ __________."
First To Answer Correctly, Gets Brainliest...
Answer:
structures that preform many jobs in cells :)
Answer:
any of a number of organized or specialized structures within a living cell.2): a specialized cellular part (such as a mitochondrion, chloroplast, or nucleus) that has a specific function and is considered analogous to an organ.3)In cell biology, an organelle is a part of a cell that does a specific job. ... Organelles typically have their own plasma membrane round them. Most of the cell's organelles are in the cytoplasm. The name organelle comes from the idea that these structures are to cells what an organ is to the body.
Explanation:
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penguins are birds that are adapted for living near water. penguins have both structural and behavioral adaptation that make them successful in water. which is a structural Adaptation of a penguin
A. having oily fur
b. selecting a mate for life
c. living in a large community
d. swallowing a stone before diving
Answer:
A is the answer
Explanation:
having oily fur
Penguins are water-adapted birds; they have both structural and behavioral adaptations that allow them to thrive in the water, and having oily fur is one of these adaptations that is present in Option A.
What are the adaptations of aquatic animals?There are many adaptations of aquatic animals, such as the adaptations of birds, such as the dolphin and other sea birds, and some of them have webbed feet that help them on the water surface, while others have oily fur that does not come into contact with the water, allowing the bird, such as a penguin, to swim on the water.
Hence, penguins are water-adapted birds; they have both structural and behavioral adaptations that allow them to thrive in the water, and having oily fur is one of these adaptations that is present in Option A.
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if the body cells in individuals of a species have homologous pairs of chromosomes, the species is most likely to be
a.eukaryotic
b. haploid
c. diploid
d. prokaryotic
the spinal cord achieves the function of locomotion through __________.
Answer:
groups of neurons called central pattern generators
The spinal cord achieves the function of locomotion through groups of neurons called central pattern generators, hence option A is correct.
What are the groups of neurons in the spinal cord?Even when cut off from the brain and sensory inputs, "central pattern generators" (CPGs) nerve networks in the spinal cord can generate rhythmic motions like swimming, walking, and hopping.
In the absence of sensory or descending inputs that contain precise timing information, central pattern generators are neural networks that, when triggered, may create rhythmic motor patterns like as walking, breathing, flying, and swimming.
The spinal cord facilitates the movement of bodily components, accidents frequently result in people being unable to utilize certain body parts like the legs.
Therefore, the spinal cord achieves the function of locomotion through groups of neurons called central pattern generators, hence option A is correct.
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The given question is incomplete, so the complete question is,
The spinal cord achieves the function of locomotion through __________.
a)groups of neurons called central pattern generators
b)pools of spinal neurons that receive input from multiple sources
c)involuntary stereotyped responses to stimuli
d)sensory neurons in the brain that initiate walking and determine its speed, distance and direction
e)a flexor reflex
a)groups of neurons called central pattern generators
Scientists have inserted a gene that codes for resistance to a biodegradable weed killer into a certain plant. Which of the following is the most likely benefit of the gene?
O The plant is more likely to survive when exposed to the weed killer
O The plant will be able to convert the weed killer into fertilizer.
O The plant will be able to produce chemicals to kill weeds around it.
O The plant is more likely to die when exposed to the weed killer.
QUICK PLEASE
Answer:
The plant is more likely to survive when exposed to the weed killer
Explanation:
since it has a gene that is resistant to the weed killer, it wont be affected by it.
resistant means it can defend itself from something
Even though human proteins are made from only 20 different amino acids, there are thousands of differen proteins found in human cells. What allows for so much variation in the proteins?
Answer:
Amino acids are the basic building blocks of proteins, and they serve as the nitrogenous backbones for compounds like neurotransmitters and hormones. In chemistry, an amino acid is an organic compound that contains both an amino (-NH2) and carboxylic acid (-COOH) functional group, hence the name amino acid. Proteins are long chains or polymers of a specific type of amino acid known as an alpha-amino acid. Alpha-amino acids are unique because the amino and carboxylic acid functional groups are separated by only one carbon atom, which is usually a chiral carbon. In this article, we will solely focus on the alpha-amino acids that make up proteins
Explanation:
I hope i helped
a
. Protons have a charge and an electron has a charge and they are to each other.
a) positive, negative, attracted
c) positive, neutral, attracted
b) positive, neutral, repellant
d) negative, positive, attracted
Answer:
Your answer is (A), positive, negative, attracted.
I hope this helped at all.
Please help!
Peter is pushing the rock but the rock is not moving. Choose the statement that describes the force(s) being applied in the image.
a boy pushing a rock, but the rock is not moving
The force of the push is an unbalanced force.
The forces acting on the rock are balanced.
A weaker force of pushing would result in unbalanced forces.
The force of gravity is pulling the rock upwards.
Answer:2b
Explanation:
the baltimore system classifies viruses based predominantly on
Answer:
Baltimore classification is a system used to classify viruses based on their manner of messenger RNA (mRNA) synthesis. By organizing viruses based on their manner of mRNA production, it is possible to study viruses that behave similarly as a distinct group.
what is a blue sea stars domain?
Answer:
Linckia laevigata (sometimes called the "blue Linckia" or blue star) is a species of sea star in the shallow waters of tropical Indo-Pacific.
...
Which of the following statements describes the relationship between the gastrocnemius and soleus muscles?
Answer:
d. All of the above
Explanation: is correct
A student is given four components of evolution, shown in the four boxes here. Which statements can be formed using the terminology shown here to accurately describe the evolution within a species? Select ALL that apply.
Answer:
C and E
Explanation:
The key feature here is that individuals cannot evolve. Individuals are either adapted in their movement. This is how evolution by means of natural selection occurs.
The statements which can be formed using the given terminology are: Individuals have different genetics, leading to the evolution of populations. Individuals with adaptations are based on genetics, allowing for populations to undergo evolution. Thus, the correct options are C and E.
What is Evolution?Evolution can be referred to as the change in heritable characteristics of biological populations over the period of successive generations. These characteristics are the expressions of genes, which are passed on from the parents to their offspring during the process of reproduction.
The statements which can be formed using the given terminology include: 1. Individuals have different genetics, leading to the evolution of populations. 2. Individuals with adaptations are based on genetics, allowing for populations to undergo evolution
Therefore, the correct options are C and E.
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Which is transported in the xylem of a plant?
Answer:
B. Nutrients
Explanation:
Xylem transports water upwards through the stem from the soil
Dissolved in this water are nutrients such as nitrates which are vital for plants
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Height in humans is a polygenic trait with a distribution similar to the graph shown Which is true concerning the distribution of
height in human populations? (1 point)
O Most individuals will be below average height
O Most individuals will be at the extremes of height
O Most individuals will be above average height
O Most individuals will be of average height
Answer:
The answer is D
i hope this helps buddy
Explanation:
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How does kinetic energy affect temperature? simple answer pls. PLS HELPP!!
Answer:
The faster the particles are moving, the higher the temperature. That is, the average kinetic energy of a gas is directly related to the temperature.
Explanation:
The erythrocytes main function is which of the following?
Kill invaders/pathogens
Keep the oxygen supply flowing
Close open wounds by clotting
Answer:
The 2nd option. "Keep the oxygen supply flowing"
Erythrocytes carry oxygen to tissues which turns into energy. It also carry carbon dioxide away from the cells.
What is the function of the nose?
To warm the air
To humidify the air
To filter the air
*All of the above
Answer:
d. All of the above
Explanation: Is the correct answer!! and post protected
Which term refers to the pyramidal cells of the precentral gyrus whose fibers end in the nuclei of the brainstem
This is a fill in the blank question. Please Help!!
Solid waste is disposed through the __
a. Rectum
b. Liver
c. Anus
(P.S this is a Science question for 13 points!!)
Answer:
i believe the answer is c.
What is a positive effect of the technological advance of going from a compass to a gps
Answer:
The positive effect of the application of a GPS over a compass is that one can get success in getting to his or her desired location. A GPS can inform about the exact location, and when it is combined with a map, it makes the person reach straight to where he or she desires to go
Explanation:
If I had a section of DNA that contains 350 nucleotides and the A's and Ts made up 200 of
those nucleotides, how many As
Gs
Cs
and Ts
do I have?(.5 points each response)
Answer:
100 A
100 T
75 C
75 G
Explanation:
there will be an equal amount of thymine and adenine since they bind together so, 200/2 = 100 each
now there is 150 nucleotides left
guanine binds to cytosine so they also have an equal amount, so 150/2=75
Answer:
As = 100
Ts = 100
Gs = 75
Cs = 75
Hope you could get an idea from here.
Doubt clarification - use comment section.
Which of the following is the best statement comparing the water of today with the water
that was here 100 million years ago? (1 point)
A) Water enters and leaves Earth duing evaporation and precipitation cycles.
B) The water present on Earth today is made of the same atoms but the molecules
have been recycled through biologic activity.
C)The atoms that made the water then were destroyed when they were used; the
atoms that make up water now were made more recently.
D)The molecules of water then are the same molecules that exist today.
Answer:
A. Water enters and leaves Earth during evaporation and precipitation cycles.
Explanation:
Answer:
B
Explanation:
C is wrong because, atoms cannot be destroyed or made according to the law of conservation of mass. D is wrong because water goes through many processes, like A states, but both are wrong because B is the most correct.
Although we consume different foods, the parts are eventually used in cellular respiration. Does it matter if they originate from crickets or cows or candy bars?
Given what we know about biological processes, we can confirm that it does not in fact matter where the nutrients come from in terms of cellular respiration.
We consume food to provide the energy we need to function on a daily basis, for this, we may reach for an apple or opt for a candy bar. However, this is irrelevant on a cellular level. Cells do not eat the food the way that we consume them.
They use a process known as cellular respiration to change the food into energy to be used by cells. The most important of this process is the transformation of high-level sugars into simple sugars like glucose and other monosaccharides.
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According to the chemiosmotic hypothesis, mitochondrial ETCs are organized so that _________ move across the inner membrane from the mitochondrial matrix to the intermembrane space as _________ are transported down the chain.
Answer:
Explanation:
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Through the activated channels, ____________ now flows outwards causing the membrane to repolarize back towards RMP.
Answer:
potassium
Explanation:
help please it's biology
Answer:
look
Explanation:
1a. Dendrite
b. cell body
c. nucleus
d. axon
e. soma
2. c, b
3. Vacoule and chloroplast
4. nerve impulse travels from left to right.
5. Sensory neuron sends electrical impulses to a relay neuron.
6. Respiration. Due to respiration in the mitochondria glucose molecules are broken down to release energy.
A(n) is a protein and/or sugar molecule on the surface of a cell that allows the immune system to identify whether or not that cell poses a threat.
Answer:
Antigen
Explanation:
Pls help I'll mark brainliest
Answer:
1. Carbon dioxide
2. Water
3. Glucose
4. Oxygen
5. reactants
6. products
7. carbon dioxide
8. oxygen
9. glucose
10. water
11. chloroplast
12. chlorophyll
Explanation:
Answer:
Explanation:
glucose + oxygen carbon dioxide + water
5. reactants 6. products
how long does it take for sperm to fertilize an egg?
Answer:
It takes about 24 hours for sperm to fertilize an egg....
Explanation:
When the sperm penetrates the egg, the surface of the egg changes so that no other sperm can enter. At the moment of fertilization, the baby's genetic makeup is complete, including whether it's a boy or girl...
Part 3
What type of front is front 1? What types of weather conditions take place there?
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Answer:
Front 1 is a cold front.
Explanation:
At a cold front, cold air moves in, causing a drop in temperature.