What 3 types of science formed the geological time scale?
a) archaeology, paleontology, astrology
b) Scientology, astronomy, and geology
c) geology, archaeology, and paleontology
d) paleontology, Scientology, and biology
Answer: c) geology, archaeology, and paleontology
Explanation:
The geological time scale can be defined as a scale which is used to determine the chronological dating of the organisms in the geological strata. It helps in determining the occurrence and existence of particular kind of species on planet earth. It can also be used to trace the development and passage of a particular kind of trait from one generation to the another. It can also be used to trace back various geological events that occurred on planet earth like volcanic eruption, plate tectonics, and others. The geologists used it for tracing the geological activities that occurred in the history of earth. Archaeologist study about rocks and fossils to trace back the geological time scale. Paleontologist study the existence of a particular species via studying the fossil evidences and reconstructing the primitive conditions by developing a geological time scale. They trace the evolutionary history of organisms.
Write the correct type of mutation that occurred in creating the mRNA strand for each of the following
examples. Original DNA: ATCCGCTTACG
a. UUGGCGAAUCG: __________________
b. UATGGCGAAUCG: _________________
c. UGGCGAAUCG:__________________
Answer:
a. the second nucleotide is wrong. It is a U but should be an A. No other nucleotides were effected by this, only the one was effected. This is a Point (Substitution) Mutation.
b. the third nucleotide is wrong. It is a T that was inserted. As you can see, the rest of the nucleotides are right, but since the T was added, it will mess up how the rest of the sequence is read. It will be read UAT GGC GAA... instead of UAG GCG AAU... see how it messed it up? This is an Insertion (Addition) Mutation.
c. the second nucleotide was deleted. This is called a Deletion Mutation. It will mess up the rest of the sequence, similar to how the example above did.
I hope that helped you understand!
1. What is a biogeochemical cycle?
2. What drives, or powers, the water cycle?
3. What causes water to condense and form clouds?
Answer:
1. In ecology and Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through biotic and abiotic compartments of Earth.
2. The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air. Rising vapor cools and condenses into clouds.
3. Heated by sunshine, the ground heats the air just above it. That warmed air starts to rise because, when warm, it is lighter and less dense than the air around it. As it rises, its pressure and temperature drop causing water vapor to condense. ... The air cools as it rises, and eventually clouds form.
Explanation:
What protects the living organisms on the earth from extreme heat and extreme cold?
A. solar system
B. revolution
C. atmosphere
D. changing seasons
Answer:
C) Atmosphere
Explanation:
The atmosphere protects the living organisms on earth from extreme heat and extreme cold.
Answer:
C the atmosphere
Explanation:
PLEASE HELP ME WITH THIS
Answer:
more exposure to sunlight and therefore increase photosynthetic production
Explanation:
What is an example of elastic potential energy?
a. stretching a rubber band
b. apple falling from a tree
c. A dog lying on the floor
d. throwing a ball
Answer:
a.stretching a rubber band
Answer:
An example of elastic potential energy is
A. stretching a rubber band.
Hope it will help :)
A 30-year-old male demonstrated a subtle onset of the following symptoms: dull facial expression; droopy eyelids; puffiness of the face and periorbital swelling; sparse, dry hair; dry, scaly skin; evidence of intellectual impairment; lethargy; a change of personality; bradycardia (60 b/min) low range of normal; a blood pressure of 90/70 low BP; anemia low iron – cant transport O through body very well(hematocrit 27); enlarged heart (upon radiological exam); constipation, and hypothermia. Plasma concentrations of total and free T4 and T3 follow:
Radioimmunoassay (RIA) of peripheral blood indicated elevated TSH levels. A TSH stimulation test did not increase the output of thyroid hormones from the thyroid gland.
a. What endocrine organ is involved here?
b. Is this a primary or secondary disorder? Why? (Is a TSH or TRH determination necessary for your diagnosis?)
c. Describe the feedback loop involved, indicating if there is an increased or decreased TSH level.
d. List several defects that could cause these symptoms.
e. Would you expect to find a palpable goiter? Explain your answer.
f. Describe a suitable treatment for this individual.
Answer:
1. Thyroid gland is the endocrine gland that is involved here.
2. TSH stimulation test did not show an increase in the output of thyroid hormones secreted from thyroid glands which makes it a primary disorder. The determination of TSH or TRH gives an idea about hypothyroidism if it is due to feedback inhibition of the pituitary or absence of TSH hormone from the pituitary, however, Circulating levels of TRH not necessary.
3. The feedback loop involves the following:
TRH hormone secreted from the hypothalamus triggers the anterior pituitary to secret TSH that in turn triggers the relapsing of the T3 and T4 levels by the thyroid glands. If there is a low level of T3 and T4 hormones then negative feedback takes place and increases the TSH output.
4. symptoms:
Not able to uptake the iodide into the cells of the thyroid gland
Defects in the conversion of iodide to iodine
tyrosine molecule iodization
secretion of the hormones from the Tg molecules
Less TSH receptors on the gland.
5. The chronic TSH stimulation due to negative feedback may cause hypertrophy of the gland, results in goiter formation.
6. synthetic hormone therapy is known as Synthroid such asT4 (L-thyroxine).
ALL living organsims can absrob nitrogen as free gas.
A True
B False
Answer: FALSE is my best guess on this one.
if it's wrong I'm sorry i dinin't help you on this and have a great day
Question 10
1.25
Perception, thinking, language, problem-solving, and creativity are topics of investigation for those interested in:
O A. Humanistic psychology
ОВ.
Introspection
oc. Cognitive psychology
Structuralism
OD
L A Moving to the next question prevents changes to this answer.
ere to search
Please help me I will offer brainliest.
Answer:
NASA using aeroplanes.
Explanation:
I think its only NASA.
What is the net force? Is it at rest or is it in motion?
ON, and in motion
13N and in motion
0N and at rest
13N and at rest
Answer
0N and at rest :)
Explanation:
7N+6N=13N
10N+3N=13N
a cell has a 5% salt concentration is placed in a solution with a 15% salt concentration, the cell will
Answer:
Water will move into and out of the cell at the same rate, causing it to remain the same size.
My main goal is to produce ATP energy
Answer:
mitochondria is my name
Explanation:
aid of diagram describe the biconversion of surfur cycles?
Answer:
The sulfur cycle describes the movement of sulfur through the geosphere and biosphere. Sulfur is released from rocks through weathering, and then assimilated by microbes and plants. It is then passed up the food chain and assimilated by plants and animals, and released when they decompose.
"A cell with 26 chromosomes undergoing meiosis will have 4 daughter cells with 26 chromosomes each by the end of meiosis II. " why is this INCORRECT?
Answer:
the number of chromosomes each time gets halved
so the first division will have 13 in each daughter cell
and the second will have about 3 in each daughter cell
Explanation:
An earthquake is best described as a
I need an edg answer
Answer:
short term
Explanation:
Answer:
short term
Explanation:
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During what phase of meiosis does non-sister chromatids align at the equator?
help help help help!
Answer:
1:C
2:C
3:D
4:D
this is 110% fact answer
The purpose of "crossing over" is
A. to add genetic diversity
B to pull the chromosomes away from each other
C to make identical copies of the parent cell
D to help dissolve the nuclear membrane
Please answer!!
Read the paragraph from the section "Types Of
Isolation."There are biological properties of organisms
that prevent breeding across different species. They are
known as reproductive isolating mechanisms (RIMs). A
mechanism is a process or method. Which option is the
BEST definition of "properties" as it is used in the
paragraph above?
The correct answer is B. Traits or features that take effect.
Explanation
Property is a word to designate any quality that identifies identifying something or someone, distinguishing it from its peers. It can refer to different issues such as its characteristics, capabilities, possibilities, physical appearance, among others. According to the text, "There are biological properties of organisms that prevent breeding across different species". So the answer is B. Traits or features that take effect.
what useful purpose is served by cell division in a multicellular organism : select all the correct answers.
A: to ensure that a cell does not become to large
B; To produce new cells during an organisms growth
C: To replace damaged cells and tissues
D: to ensure all cells remain undifferentiated
Answer:
c
Explanation:
the main reasons cells duplicate is so they can replace damaged cells and tissues
The following options are the useful purpose is served by cell division in a multicellular organism:
A. to ensure that a cell does not become too large B. To produce new cells during an organism's growth C. To replace damaged cells and tissuesMulticellular organisms are the organism that is formed by the complex organization of cells, tissues, or organs Whereas a single-cell organism is unicellular organisms.
Single-celled organisms use cell division only for reproduction.All multicellular organisms use cell division for growthAnther purpose of cell division in multicellular is to replace and repair cells and tissues.Cell division is a strictly controlled process as a failure of regulation can be life-threatening.In multicellular organism cell division takes place in sex cells as well as somatic cellsThus, the correct answer is options A, B, and C.
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If a DNA strand contains 12% thymine, it also contains ____
a. 12% A, 38% G, 38% C
b. 12% A, 12% G, 38% C
c. 12% A, 12% G, 12% C
d. 38% A, 12% G, 38% C
Answer:
If G = 14, then C = 14 and G + C is 28. Thus A + T. The percent of adenine in a double-stranded DNA is 38. Therefore G + C = 100 - 76 = 24, and C = 24/2 = 12 percent.
Explanation:
Newton's 2nd Law is F= ma. Write a problem that gives the mass and the acceleration of an object and asks us to find the force.
Answer:
An object having a mass of 20kg is pushed by John and it then accelerates down the inclined plane at a rate of 0.5m/s². Find the force applied on the object.
Explanation:
Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass.
For example, an object having a mass of 20kg is pushed by John and it then accelerates down the inclined plane at a rate of 0.5m/s². Find the force applied on the object.
Given the following data;
Mass = 20kg
Acceleration = 0.5m/s²
To find the force;
Force = mass * acceleration
Substituting into the equation, we have;
Force = 20 * 0.5
Force = 10 Newton.
HELP ASAP!!!
Proteins are a type of biomolecule with a wide variety of functions. Which statement is correct about the digestive system and proteins?
Question 1 options:
Enzymes in your saliva start breaking down the carbohydrates in food
Ready to use energy is released as the protein is broken down
The large intestine absorbs proteins for use in cells.
The liver manufactures bile salts that help break down fats in proteins
Answer:
Enzymes in your saliva start breaking down the carbohydrates in food
Explanation:
It makes sense, your digestive system consists of your mouth, esophagus, stomach, pancreas, liver, gallbladder, small intestine, large intestine, and anus. As soon as you put food in your mouth you break down your food. Also I took the test, hope you make an good grade!!!
The statement 'enzymes in your saliva start breaking down the carbohydrates in food' is correct about the digestive system and proteins.
The digestive system is an organ system where organs work together to digest foods.Enzymes are specific proteins that carry out specific chemical reactions.Digestive enzymes such as amylase are secreted by the salivary glands in order to help with the digestion of foods.
In conclusion, the statement 'enzymes in your saliva start breaking down the carbohydrates in food' is correct about the digestive system and proteins.
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Particles of weathered rock are also called
A. terracing
B. humus
C. sediments
D. abrasion
Which action is necessary for a solar eclipse to occur?
The Moon needs to be full.
Earth needs to pass in front of the Sun.
The Sun needs to pass in front of the Moon.
The Moon needs to pass between Earth and the Sun.
What is the energy molecule that is being used during photosynthesis?
A. H2O
B. NADPH
C. Mitochondria
D. ATP
describe the structure of
Answer:
Of what?
Explanation:
PLEASE HELP ME !!!!!!!!
Answer:
1 eubacteria
2 archaebacteria
3 eubacteria
4 animalia
5. protista
6. protista
7 archae bacteria
8plants
9 fungi
10 fungi
11 protista
12 protista
13. eubacteria
14. fungi
15 fungi
16 plants
17 protista
18 eubacteria
19 animalia
20 archaebacteria
21. protista
22. animalia
23eubacteria
24 likely fungi though archae and protista and eubacteria would fit too
Explanation:
8. a) How are the events in the menstrual cycle triggered by the body? (1 point)
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There is a supply of undeveloped eggs in the ovaries. At the beginning of the menstrual cycle, between 6 and 12 undeveloped eggs in the ovaries start to mature. A layer of cells grows around them. At around day 5 of the menstrual cycle, the biggest follicle will continue to grow for another week. At around day 14, the follicle breaks apart, and the wall of the ovary ruptures. The egg is released from the ovary into the fallopian tube, where it can get fertilized. This process is called ovulation. The uterus also changes during the course of the menstrual cycle. It has a lining of cells on the inside, kind of like a cushion with a lot of blood vessels. Fallopian tubes connect the ovaries and the uterus. The uterine cycle begins with menstruation. This is the process through which most of the lining and blood from the last uterine cycle are cleared out of the uterus to prepare for a new attempt at pregnancy. Starting at around day 5, the lining starts to grow. It builds back up to prepare a place for the egg to grow if it gets fertilized. After ovulation, the egg reaches the oviduct. If sperm cells have entered the vagina during intercourse, fertilization may occur at any time in the next two weeks. Then the fertilized egg will move into the uterus and implant itself into the lining, where development will begin.
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The events in the menstrual cycle are primarily triggered by hormonal signals from the body. The menstrual cycle is a complex process regulated by the interplay of hormones produced by the hypothalamus, pituitary gland, and ovaries.
1. Hypothalamus: The hypothalamus, a region of the brain, releases gonadotropin-releasing hormone (GnRH) in a pulsatile manner. GnRH stimulates the pituitary gland.
2. Pituitary gland: In response to GnRH, the pituitary gland secretes two important hormones: follicle-stimulating hormone (FSH) and luteinizing hormone (LH).
3. Follicular phase: At the beginning of the menstrual cycle, FSH stimulates the growth and maturation of ovarian follicles, which contain the developing eggs (oocytes).
As the follicles grow, they produce estrogen, a hormone that helps prepare the uterus for a possible pregnancy.
4. Ovulation: As the estrogen levels rise, it triggers a surge in LH production by the pituitary gland. The LH surge leads to the release of a mature egg from the ovary, a process called ovulation.
5. Luteal phase: After ovulation, the ruptured follicle in the ovary transforms into a structure called the corpus luteum. The corpus luteum produces progesterone, which prepares the uterus for potential implantation of a fertilized egg.
6. Menstruation: If pregnancy does not occur, the levels of estrogen and progesterone decline. This drop in hormone levels triggers the shedding of the uterine lining, resulting in menstrual bleeding.
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