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Why is it difficult for your body to return blood from your feet when you sit for too long?. Single choice. a. Blood has to travel a greater distance. B. Skeletal muscles are not squeezing the veins. c. Gravity makes the blood flow backward. d. The heart does not beat fast enough at rest.
Answer: Option C.
Gravity makes the blood flow backward
Explanation:
it difficult for your body to return blood from your feet when you sit for too long because gravity makes blood flow backward and this is because when you sit for long , it weakens the keg muscles because it is necessary for body movement so that blood will circulate or flow well. When the keg muscles becomes weak, it will slow blood flow in the leg and the force of gravity acting will make the blood flow backward and thus can cause a blood clot.
Help please? *25 points*
Answer:
Yes, if igneous rock us moved to earth's surface and exposed to energy from the earth's sun, it could weather into smaller pieces that could form sedimentary rock.
Explanation:
I found that answer on Google, so I'm honestly not sure if it'd be A or B. Sorry! hope this helps a bit.
Which type of energy does cellular respiration release?
chemical energy
thermal energy
kinetic energy
potential energy
Answer:chemical energy is correct.
Explanation:
heredity
A.collectionof genes that determine specific characteristics
B.a section of the molecule that carries instructions for specific traits from one generation to another
C.the passage of traits from generation to generation
D.molucle that carries genetic instructions for all known living organisms
E.the expression of traits that can be seen and measured
Answer:
C. The passage of traits from generation to generation.
why will water and oil not mix?
Answer:
water will sink while oil will float on the surface.Also their densities are different too .Explanation:
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Cellular (aerobic) respiration takes place in the presence of and with the use of a certain element.
Which element is it?
Answer:
air
Explanation:
Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
if an owl eats two mice and two moles, but the moles have twice as much mass, then,??
Four sex cells are produced. Each cell has _________________ the number of chromosomes of the __________________________ cell. Each sex cell haqs only ________________________ chromosome form an orginal pair. How many chromosomes are in each cell in step 3?___________________________
Answer:
Four sex cells are produced. Each cell has ___half___ the number of chromosomes of the __parent______ cell. Each sex cell has only ____one_ chromosome from an original pair.
Explanation:
Answer:
How many chromosomes are in each cell in step 3? 4
Explanation:
it is 4 because if you count it in the diagram, there are two cells and two pairs of chromosome in each, which is a total of 4.
I think this is right.
Hope it helps!
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Pedigrees and karyotypes provide the means for individuals to identify their risks of genetic disorders. What can be observed on a karyotype but not on a pedigree?
family carriers of a genetic disorder
family history of a genetic disorder
risk of a genetic disorder in offspring
a visual image of a chromosomal defect
Answer:
D) a visual image of a chromosomal defect
Explanation:
The genetic disorders, or inheritance of traits, and abnormality in the chromosome can be studied through pedigree charts and karyotyping.
The correct answer is Option D, a visual image of a chromosomal defect.
The difference between karyotype and pedigree chart can be explained as:
Pedigree charts are the diagrammatic representation of the phenotypes of a particular gene or the lineage of the ancestors. The chart is used to study the inheritance of a trait or a disease. Karyotype refers to the collection of chromosomes, in which disorders or structures of chromosomes are studied. Karyotype provides visual damage or abnormality in the structure of chromosomes.
Thus, the correct answer is Option D.
To know more about pedigree, refer to the following link:
https://brainly.com/question/9066873
Michael took a swab of bacteria from a Petri dish and placed it on a glass slide. Then he treated the sample with a series of dyes.
For which type of microscope is the sample prepared?
A.
scanning electron microscope
B.
compound microscope
C.
dissecting microscope
D.
transmission electron microscope
Answer:
B
Explanation:
Answer:
compound microsope
Explanation:
did the studyisland:)
Which statement best describes the end result of this process? a New molecules of mRNA are transcribed from the DNA molecule. b The new DNA molecules are made from opposite DNA strands so they are not identical. c A protein molecule is synthesized from the code in the DNA molecule. d Two new DNA molecules are formed, each identical to the original
Answer: c. A protein molecule is synthesized from the code in the DNA molecule.
Explanation: This shows the steps surrounding the central dogma of molecular biology stating that the genetic material, DNA contains the needed information and instructions for creating a protein, which are copied by RNAs. As such it follows that DNA is transcribed into RNAs which are in turn translated into proteins.