Scientists can determine the exact age of a fossil by how much carbon is left in the fossil. This is called
Question 9 options:
Both of these
None of these
Relative dating
Radiometric dating
Scientists can determine the exact age of a fossil by a technique called Radiometric dating. Radiocarbon dating involves the determination of how much carbon is left in the fossil.
In radiocarbon dating, it is possible to determine how much carbon is left in the fossil, by looking at its half-life period.
Radiocarbon dating (also known as carbon dating) refers to the technique aimed at determining the age of a fossil by exploring the properties of a radioactive carbon isotope called radiocarbon.
Radiocarbon or carbon-14 (14C) is a radioactive carbon isotope of carbon that contains 6 protons and 8 neutrons, whose amount in a sample can de be used to determine the age of a given organic material.
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Where does carbon dioxide come from during photosynthesis?
Answer:
Plants extract the carbon dioxide from the air and use it in photosynthesis process to feed themselves.
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10. If the red allele is incompletely dominant to the white alle
individual's phenotype be?
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Answer:
1. Transfer
2. Share
3. Subscript
4. Positive
What designs the shape and size of all animals that are multi-cellar and have a back-bone
Answer
Environmental pressures
Basically every animal adapts to pressures from their environment in different ways, causing them to have different shapes and sizes
What is an example of a solute found in plasma?
water
globulins
platelets
uvulas
Example of solute found in the plasma is globulins.
Plasma is the largest part of the blood that is usually amber in colour.
Plasma is made up of solutes that are soluble in it. These include:
sodium,chloride, bicarbonate, and protein.
Plasma proteins are proteins found in blood plasma which helps to create osmotic pressure and transport of hormones and lipids.
Example of plasma proteins are:
albumin, globulins, and fibrinogen.Globulins are high molecular weight proteins of blood plasma.
Therefore, an example of solute found in the plasma is globulins.
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Which of the following correctly describes a graded potential?
Answer:
Graded potentials are changes in membrane potential that vary in size, as opposed to being all-or-none.
Explanation:
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The statement which correctly describes a graded potential is: amplitude of various sizes.
Graded potential refers to a temporary change in electric or membrane potential of a stimulus with respect to both its size and distance.
Amplitude can be defined as the maximum displacement of a wave when measured from its equilibrium position.
Thus, amplitude is measured vertically from an equilibrium position.Generally, a graded potential is directly proportional in amplitude to the size of the stimulus that is send as an input due to the following:
DepolarizationHyperpolarizationIn conclusion, the statement which correctly describes a graded potential is amplitude of various sizes.
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Show you work here using the data table 1 to calculate the energy consumed by this female sea otter.
Answer:
the female sea otter has 1
Explanation:
Describe how cellular respiration and photosynthesis are related to one another.
Answer:
Photosynthesis makes the glucose that is used in cellular respiration to make ATP. ... While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration
Distinguish between dimorphic, polymorphic, and continuously variable traits.
Dimorphic, polymorphic, and continuously variable traits are distinguished as follows:
Dimorphism is the condition of those species of animals or plants that exhibit two anatomical aspects or two different forms.When talking about polymorphisms in genetics, reference is made to the different variations that may exist on the DNA of the same gene.Continuously variable traits are those that show a continuous distribution of phenotypes.Therefore, we can conclude that dimorphism is a polymorphism with only two forms, the polymorphism is any stable change of the DNA fixed in the population and in continuously variable traits the phenotypes show a continuous series and cannot be easily grouped.
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Explain how cells theory development
Answer:
The invention of the microscope led to the discovery of the cell by Hooke. While looking at cork, Hooke observed box-shaped structures, which he called “cells” as they reminded him of the cells, or rooms, in monasteries. This discovery led to the development of the classical cell theory.20-Aug-2020
Explanation:
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Identify the animal products and by-products you use throughout an entire day, and log them in a journal. Submit your journal and your reflection.
Answer: Products from animals include meat and meat products, poultry products (meat and eggs), fish, shellfish, dairy products (milk and cheese), and non-food products such as fiber (wool, mohair, cashmere, and leather).
Explanation:
A scientist recently discovered a pond organism that is unicellular, contain
other membrane-bound organelles, and possesses a flagellum. In which ki
organism classified?
Fung
Monera
Plant
Protista
A pond organism that is unicellular, contains membrane-bound organelles and possesses a flagellum is a PROTISTA. It is a unicellular kingdom.
The Protista kingdom is composed of eukaryotic single-celled unicellular organisms.
Flagellated protists are microorganisms having a tail-like projection known as flagellum.
The flagellum is a structure used for motion, thereby, in general, flagellated protists are found in moist environments (e.g., ponds, fresh-water, etc).
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water vapor present in air support water cycle
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1) How long is it's growing season for carrots.
2) How long is it's growing season for corn.
Answer:
2-4 months for carrots and about 120 days for corn
Explanation:
in this investigation the independent (or tested) variable is a. the speed of the rat b. letting the rat 10 times c. adding the rat's favorite treat at the end d. using the same maze
A neuron that stimulates the gastrocnemius muscle receives signals from multiple areas of the brain. This is an example of
Answer:
Convergence
Explanation:
Which group of elements is provided by air and water?
Answer: Over 95 percent of the dry weight of a flowering plant is made up of three elements—carbon, hydrogen, and oxygen—taken from the air and water. The remaining 5 percent of the dry weight comes from chemicals absorbed from the soil.
Explanation:
A biological factor that is correlated with borderline personality disorder is:
a)
a high level of testosterone.
b)
a low level of serotonin.
c)
a high level of serotonin.
d)
a low level of testosterone.
If the gene for not having Albinism (A) is dominant over the gene for having albinism (a). How can two non-albino people have an albino child. which genotype makes this possible?
why are the offspring of coral identical to the parent
they reproduce sexually so offspring have increased genetic variation
they reproduce asexually so offspring have increased genetic variation
they reproduce sexually so offspring have decreased genetic variation
they reproduce asexually so offspring have decreased genetic variation
Answer:
they reproduce asexually so offspring have decreased genetic variation
Explanation:
when an organism reproduces asexually, its offspring will look identical to the parent due to the offspring only receiving genes from one parent. I hope this helps!
Based on the numbers in the previous question, an 80–pound Earth girl would weigh about ___ pounds on the planet Namar.
A. 4
B. 320
C. 18
D. 40
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N2 is the chemical formula
for what compound?
A. Ammonium
B. Nitrogen gas
C. Nitrite acid
Answer:
B. Nitrogen gas
Explanation:
All of the following would result in a population increase except
- a high rate of immigration
- a higher death rate than birth rate
- a low rate of emigration
- a low birth rate
1. Which of the following characteristics is possessed by invertebrates?
a) exoskeleton
b) endoskeleton
c) joint appendages
d) cephalization
Answer: a) exoskeleton
Explanation:
Well, many invertebrates – and all arthropods – have a protective external casing called an exoskeleton. This literally means ‘outside skeleton’ and its role is to cover the animal’s soft tissues and also provide a rigid structure to which the creature’s muscles can attach.
explain why animals exhibit differences in their essential food requirements?
Explanation:
Environment affects animal behavior by changing the availability of survival resources like food & shelter, as well as situational things like proximity to human activity. Sometimes the same species of animal will behave completely differently in a forest environment compared to an urban environment.
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Answer:
Hope this helps :)
Explanation:
Different animals display different needs for different foods depending on their species. For example, a human will eat meat if they need protein and they will eat lemons if they need citrus. Animals are the same way. The animals will eat different foods depending on their needs and preference.
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What are examples of devices that use electromagnetic waves? Check all that apply.
-FM radios
-microwaves
=TV remote controls
Answer:
FM radios and TV remote controls.
How animals can be classified on the basis of the ability to thermoregulation?
14. The active site of an enzyme
a. Is where the semi-permeable membrane is located
b. Is a specific bulge of protuberance on an enzyme
C. Is a groove or crevice in the structure of the enzyme into which the substrate fits
d. Rigidly resists any alteration of its shape
The active site of an enzyme
a. Is where the semi-permeable membrane is located
b. Is a specific bulge of protuberance on an enzyme
C. Is a groove or crevice in the structure of the enzyme into which the substrate fits
d. Rigidly resists any alteration of its shape
Answer:-C. Is a groove or crevice in the structure of the enzyme into which the substrate fits.
Explanation:-The active site is one such gap or pocket to which the substrate adapts and binds to the enzyme.
The active site is the region of the enzyme to which the substrate molecule binds and causes a chemical reaction. The active site is composed of amino acid residues that form a temporary bond with the substrate.