2. What is a gene? ________________________________________________________
3. What is the difference between gametes and body cells? ____________________________________________________________________________
4. Each person’s DNA is unique except for who?________________________________________________________________________
5. How does each gene code for a protein?__________________________________________________________________________________________________________________________________________________
6. Look at the picture of the nucleus, chromosome, and gene and infer what the relationship is of the three things? ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Answer:
2).a gene is a basic unit of heredity and a sequence of nucleotides in DNA that encodes the synthesis of a gene product, either RNA or protein
PLEASE HELP ME IM TIMED!
Answer:
D
Explanation:
Actually fat is the best source of energy, since it is time consuming to break down a molecule of fat, carbohydrate is now used as an alternative to that since the molecules are broken down quicker.
Which would be least likely to be affected by a density-dependent limiting 4
factor?
O a small population of tigers scattered across a wide area
O a rapidly reproducing population of bacteria
a large, dense population of fish in a pond
a population of birds with a high immigration rate
Answer: a small population of tigers scattered across a wide area
Explanation:
Hope this helps
Answer:
The answer is a. a small population of tigers scattered across a wide area
CAN SOMEONE PLEASESS HELP ME!! Thank uu!!!
what is located in the autonomic nervous system
Answer:
It contains three anatomically distinct divisions: sympathetic, parasympathetic, and enteric.
Explanation:
The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS) contain both afferent and efferent fibers that provide sensory input and motor output, respectively, to the central nervous system (CNS). Generally, the SNS and PNS motor pathways consist of a two-neuron series: a preganglionic neuron with a cell body in the CNS and a postganglionic neuron with a cell body in the periphery that innervates target tissues. The enteric nervous system (ENS) is an extensive, web-like structure that is capable of function independently of the remainder of the nervous system. It contains over 100 million neurons of over 15 morphologies, greater than the sum of all other peripheral ganglia, and is chiefly responsible for the regulation of digestive processes.
Currents at the surface of the ocean, like those in El Niño are moved mainly by
O heat
O wind
O salinity
O the mixing of warm and cold water
Answer: winds
Explanation:
fundamental similarity due to descent from a common ancestor is called
Answer:
fundamental similarity due to descent from a common ancestor is called homology.
You do NOT have a pair of which of the following organs?
A. Lungs (plural)
B. Ureters (plural)
C. *Urinary bladder (singular and we have only one of these)
D. Kidneys (plural)
how did this question possibly violate any guidelines?
lets see if this question stays put this time.
Quiz let is better
Answer:
c. Urinary bladder is correct
Explanation:
2. What is a gene? ________________________________________________________
3. What is the difference between gametes and body cells? ____________________________________________________________________________
4. Each person’s DNA is unique except for who?________________________________________________________________________
5. How does each gene code for a protein?__________________________________________________________________________________________________________________________________________________
6. Look at the picture of the nucleus, chromosome, and gene and infer what the relationship is of the three things? ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Please answer all questions
Answer:
1. generation or birth or gender) is a basic unit of heredity and a sequence of nucleotides in DNA that encodes the synthesis of a gene product, either RNA or protein.
2: 1. Body cells make up the body of any multicellular organism. On the other hand, a gamete is a sex cell that can either be a sperm or egg cell.
2. Body cells undergo the process of mitosis while gametes undergo a process called meiosis.
3. A body cell contains a complete number of chromosomes and is called a diploid cell while a gamete contains only half the number of chromosomes of its parent cell, and it is called a haploid cell.
3. Identical twins
4. nucleotide triplets
5. A gene is a sequence of nucleotide bases that specifies certain products; RNA or proteins. It is the segment of DNA that holds the information to build and maintain an organism's cell and also pass genetic traits to offspring. Hence, it is the molecular unit of heredity in living organisms.
The DNA is a long double-helical structure that stores the genetic information in our cells. It consists of two long polynucleotide chains composed of the four nucleotides subunits (A, C, G, T).
In order for the long strand of DNA to fit into the cell's nucleus, it is coiled around certain proteins called HISTONES to form Chromatin, which undergoes further coiling and organization to to linear CHROMOSOMES.
The chromosomes are structured within the nucleus, that are made up of the cell's genetic material (DNA). In eukaryotic cells, the nucleus houses the cell's DNA and directs protein synthesis (expression of the information encoded by genes).
Explanation:
lon khoáng nào đóng vai trò đặc biệt quan trọng trong quá trình đông máu?
Answer:
1. Xét nghiệm yếu tố đông máu để làm gì?
Để đánh giá khả năng đông máu như thế nào và quá trình đông máu kéo dài trong thời gian bao lâu, các bác sĩ sẽ tiến hành xét nghiệm các yếu tố đông máu.
Quá trình đông máu sẽ bảo vệ cơ thể bạn khi bị chảy máu. Tuy nhiên, nếu một cục máu đông hình thành trong tĩnh mạch bình thường thì đây là điều hết sức nguy hiểm vì có thể khiến cho dòng máu bị chặn đến tim, não, phổi.
Khi thực hiện xét nghiệm các yếu tố đông máu, sẽ biết được nguy cơ bạn bị chảy máu quá nhiều khi bị thương hay không hoặc có nguy cơ bị đột quỵ không.
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2. Các yếu tố đông máu gồm những gì?
Fibrinogen
Fibrinogen là yếu tố ảnh hưởng lớn đến quá trình đông máu
Sau đây là các yếu tố ảnh hưởng đến quá trình đông máu:
I - Fibrinogen: Fibrinogen là huyết tương có trọng lượng phân tử là 340.000, hòa tan được. Yếu tố này có mặt trong huyết tương với nồng độ là từ 100-700mg/ 100mL. Đa số Fibrinogen được tạo ra ở gan, vì thế đối với những bệnh nhân bị bệnh gan thì lượng Fibrinogen giảm trong máu tuần hoàn, sự đông máu bị ngăn cản.
II- Prothrombin: Prothrombin là protein huyết tương có trọng lượng phân tử là 68.700, có mặt trong huyết tương với nồng độ là 15mg/100mL. Gan sản xuất Prothrombin liên tục, chính vì vậy nếu gan bị suy yếu, lượng prothrombin sẽ giảm, gây ức chế sự đông máu.
III- Thromboplastin mô: Yếu tố này tham gia vào cơ chế đông máu ngoại sinh, thay thế phospholipid tiểu cầu và các yếu tố huyết tương. Bên cạnh đó, thromboplastin còn có tác dụng chống nhiễm khuẩn.
IV- Ca++: Quá trình đông máu không thể không có mặt của loại ion này.
V- Proaccelerin: Khi có nhiều ion Ca++ thì yếu tố này mất hoạt tính. Khi không có proaccelerin, người ta điều chế huyết tương bằng cách để lâu huyết tương lấy từ máu chống đông với oxalat.
VII- Proconvertin: Trọng lượng phân tử của yếu tố này là 60.000. Hoạt tính của yếu tố này trong huyết tương sẽ bị giữ lại trên màng lọc amiang;
VIII- Antihemophilic A: Để tổng hợp yếu tố này, phụ thuộc vào rất nhiều gen trong các nhiễm sắc thể khác nhau. Thường thì antihemophilic được tổng hợp chủ yếu từ gan, lá lách và hệ thống võng nội mô. Khi thiếu ion Ca++ thì yếu tố này mất hoạt tính. Đây là yếu tố chống huyết hữu B;
IX- Antihemophilic B: Chống huyết hữu A.
X- Stuart: Stuart có trong huyết tương, ở dưới dạng không hoạt động. Trong quá trình đông máu nội sinh có sự tham gia của yếu tố này. Khi cho thromboplastin mô vào quá trình đông máu ngoại sinh, sẽ không còn yếu tố stuart.
XI- Plasma Thromboplastin Antecedent (PTA): Quá trình khởi phát đông máu nội sinh không thể thiếu yếu tố PTA.
XII- Hageman: Động lực để tạo thành một loạt phản ứng dẫn đến đông máu là sự tiếp xúc giữa yếu tố XII với mặt trong mạch máu tổn thương cùng sự có mặt của phospholipid tiểu cầu. Bên cạnh chức năng hoạt hóa hệ đông máu, Hageman còn hoạt hóa hệ đông máu, hệ bổ thể và hệ chống đông.
XIII - Fibrin Stabilizing Factor ( FSF): yếu tố này có hoạt tính bền vững trong huyết tương, ổn định fibrin.
Explanation:
the ventral rami of spinal nerves ________ form the major nerve plexuses.
Answer:
The blank is:
C1 through T1 and L1 through S4
Hope this Helps
what type of ions carry the impulse across the synapse from one neuron to the next ?
It's the sodium ion.
When a neural impulse is fired in both neurons, it is always cause by an excited electron in one neuron moving to the other neuron to destabilize the balance of ions trying to keep them at equilibrium. This action either depolarizes or hyper-polarizes the membrane. If it does, then sodium ions--the key deficient ones--can flow into that region of low charge and maintain that state of low charge, keeping the cell membrane stable.
I’ll give brain
Drag the tiles to the correct boxes to complete the pairs.
What is the function of each lymph organ?
The last drop-down box is spleen which you can’t see in the picture.
Answer: The primary lymphoid organs are the red bone marrow, in which blood and immune cells are produced, and the thymus, where T-lymphocytes mature. The lymph nodes and spleen are the major secondary lymphoid organs; they filter out pathogens and maintain the population of mature lymphocytes
Explanation: hope this helps bye :)
Which type of tooth is used to fragment foods into ever-smaller chunks by shearing, slicing, crushing, and griding
The shape of the earth’s orbit is known as______ it can change from almost a perfect circle to
The shape of earth's orbit is known as
elliptical (egg like).
O obliquity
O precession
O orbit
O eccentricity
Answer:
A.
Explanation:
Because the other ones do not make sense.
Arolium uses in a cockroach.pleasehelpme.
Answer:
just run away ........ ok save yourself
Imagine looking through a microscope at a squashed carrot root tip. The chromosomes of many of the cells are plainly visible. In some cells, replicated chromosomes are aligned along the center of the cell. These particular cells are in which stage of mitosis
What are 2 ways PCR is used in everyday life?
Answer:
including genotyping, cloning, mutation detection, sequencing, microarrays, forensics, and paternity testing. I hope this helps! Explanation:
Spindle fibers are composed of which type of protein?
Answer:
Hey there. The answer should be Tubulin.
Explanation:
Spindle fibres are formed from microtubules which are made up of a protein called Tubulin.
we inhale o2 and we exhale co2. carbon dioxide is produced __________.
Which does not contain cytoplasm? A. liver cell
B. palisade tissues C. red blood cell D. xylem vessel
Answer:
dfhzklgrwjhigwruighwreuygbwgerg
Explanation:
egg hjeghbhuwbguygb8qyugfbqey7g
on what basis are populations assigned to the same biological species?
Answer: On What Basis Are Populations Assigned To The Same Biological Species? Answer A Very Similar Appearance Being Able To Interbreed And Produce Fertile Offspring Relating To The Environment In The Same Way Sharing A Common Ancestor Having 99% Of Their Genes In Common
materials are cycled out by the chloroplast and mitochondrion
Carbon dioxide, Water, Sugar And Oxygen.
which region of the brain contains gyri and sulci?
Answer:
The cerebral cortex, or the outer layer of the cerebrum
Explanation:
when individuals are more successful at & reproducing than others?
Answer:
Natural selection, Evolutionary mechanism in which individuals that are better suited to their environment survive and reproduce most successfully.
interphase definition ?
Answer:
The resting phase between successive mitotic divisions of a cell, or between the first and second divisions of meiosis.
Answer:
the resting phase between successive mitotic divisions of a cell, or between the first and second divisions of meiosis.
The ______ contain the neurotransmitter, located in the _________. Neurotransmitter will be released only if the neuron sends a(an) ________.
Answer:
Is contained in the synaptic vesicles.
Located in the axon terminal of the presynaptic neuron.
Explanation:
Neurotransmitters are stored in the synaptic vesicles, clusted closed to the cell membrane at the axon terminal of the presynaptic neuron.Neurontransmitters are released into and diffuse across the synaptic cleft, where they bind to specific receptors on the membrane of the postsynaptic neuron.
"Hope this helps".
The diagram above shows the cell cycle. As you can see from the diagram, the cell spends most of the time in _______________________ during which it undergoes rapid growth and the DNA is replicated in order to prepare for Mitosis
Answer:
Interphase
Explanation:
Interphase is the phase in the cell cycle in which rapid growth occurs and DNA is replicated.
During exercise, the blood is travelling more quickly around the body. This carries more oxygen to the exercise muscles. Describe other changes in the athlete's body that enable more oxygen to be taken in at the lungs.
Answer:
your heart rate goes up explaining why the blood is traveling quicker. this causes you to breath faster meaning bring more oxygen to the blood in your lungs faster. your blood pressure also goes up from the increase in heart rate.
Answer:
the breathing rate and volume of each breath increases to bring more oxygen into the body
Explanation:
it removes the carbon dioxide produced. the heart rate increases, to supply the muscles with extra oxygen and remove the carbon dioxide produced.
Fill out the data table below with the range of each factor that will produce the optimal number of oxygen bubbles.
Answer:
B
Explanation: