Eras and periods both appear at the start of the Cambrian period.
In geological time scale, period is the fundamental unit.
Few periods combine to form an Era.
Few Eras combine to form an Eon.
Time period before the Cambrian period (which is the first period in Paleozoic era) is generally termed as 'Precambrian' time. Classification of time scale as periods and eras began at the start of Cambrian period.
Answer:
The answer is C.
Explanation:
Eras and periods both appear at the start of the Cambrian period.
The cell cycle has a regular system of checks and balances that prevents damaged or mutated cells from proceeding to the next phase. One way an organism deals with the problems is to kill the damaged cell before it passes on the problem to its daughter cells. This is a normal process called apoptosis.
a. True
b. Fale
Answer:
A. True
Explanation:
Apoptosis is a normal cellular process in which the cell inherently programs the death of a mutated or damaged cell without affecting the healthy condition of the other surrounding cells by proliferating.
Apoptosis is a system of checks and balances that the cell uses to prevent damaged or mutated cells from proceeding to the next phase in the cell cycle. This curbs or prevent the damaged cell from passing on the problem to its daughter cells. Hence, according to this question, it is TRUE.
I need the word scramble part only
Answer:
look it up or fail
Explanation:
please help my little sibling fr needs it . thank u !
Answer:
1 is C
2 is A
3 is B
Explanation:
1 - the cow is breathing and releases carbon dioxide the tree absorbs it and releases oxygen
2 - the cow Is breathing that's why it releases carbon dioxide
3 - the human takes in oxygen but breaths out carbon dioxide
As arizona poppy plant carries out photosynthesis, which of the following would not occur during stage 1 of the process?
Answer:
a
Explanation:
As arizona poppy plant carries out photosynthesis, Glucose is created using carbon dioxide. The Arizona poppy is a plant indigenous to the American Southwest.
What is photosynthesis ?Photosynthesis is a process that plants and other organisms used to convert light energy into chemical energy that can then be released to fuel the organism's activities via cellular respiration.
Plants absorb carbon dioxide (CO2) and water (H2O) from the air and soil during photosynthesis. Water is oxidized within the plant cell, which means it loses electrons, whereas carbon dioxide is reduced, which means it gains electrons. This converts water to oxygen and carbon dioxide to glucose.
Photosynthesis is the process by which carbon dioxide and water are converted into oxygen and glucose. The plant consumes glucose as food and produces oxygen as a byproduct. Cellular respiration is the process by which oxygen and glucose are converted into water and carbon dioxide.
Thus, As arizona poppy plant carries out photosynthesis, Glucose is created using carbon dioxide.
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in an appropriate design experiment, a scientist is able to test the effect of?
Answer:
This question is incomplete as it lacks options, the options are:
A) a single variable
B) multiple variables
C) the hypothesis
D) scientific observations
The answer is A
Explanation:
An experiment is conducted to solve a particular problem or find answers to a given scientific question. In an experiment, which usually consists of variables, only A SINGLE VARIABLE is tested at once.
This means that the effect of a variable called INDEPENDENT VARIABLE is tested at a time. The independent variable is the variable that is changed or manipulated in an experiment. This means that only a SINGLE VARIABLE can be changed at at time in an an appropriate design experiment.
Which of these would help dissolve a solid into a liquid faster?
A lowering its temperature
B compressing the solid into a big lump
C using a metallic rather than a nonmetallic solid
D stirring or shaking the mixture
Answer:
lowering it's temperature
Explanation:
i guess because hotter it is the note liquidy
Answer:
D. stirring or shaking the mixture
Name two extinct species that share a close evolutionary relationship with humans.
Answer:Do not worry im here to help!
EXTINCT ANIMALS THAT ARE CLOSELY RELATED TO US ARE:Some of the extinct members of this family include Gigantopithecus, Orrorin, Ardipithecus, Kenyanthropus, and the australopithecines Australopithecus and Paranthropus.
animals that are not exticnt and are stilll here and are closley related to us are the: orangutans and gorillas are in the great ape family, humans are most closely related to two other species in the family: bonobos and chimpanzees.
Answer: a gigantopithecus, Paranthropus, Adripcines, and an Orrorin.
The similarities they have with us are the face features ,personality traits, and DNA. The differences is that they have way more body hair, communication, and mental abilities.
An endosperm is the embryo of a plant. False True
Answer:
False
Explanation:
Help 20 pointsssssssss
Answer:
do you have the numbers for the distance and time?
Explanation:
Answer:
sue was on her way to school then realized she forgot her purse at home so she went back then realized she was late for the school bus so she took a short cut to get there faster
Explanation:
Our galaxy has more stars than our solar system has planets true or False?
Answer:
TRUWE
Explanation:
Explain how the biogeochemical cycle are essential for life.
Because Earth has limited materials and room for deceased creatures, biogeochemical cycles are vital to life and ecosystems. Biogeochemical cycles transport and store these chemicals for living creatures.
What are biogeochemical cycle?Because there is a finite quantity of stuff on earth and a certain amount of room for dead species as well, biogeochemical cycles are crucial for life and significant to ecosystems. Additionally, biogeochemical cycles are crucial because they move and store these chemicals so that living things may use them.
The flow of nutrients and other elements between biotic and abiotic forces is referred to as "biogeochemical cycles" in most cases. The words "bio" and "geo," which refer to the biosphere, "geo" and "chemical," which refer to the elements that flow through a cycle, are the roots of the phrase "biogeochemical."
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Describe the relationship between genes, proteins, chromosomes, and cells.
Answer:
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
Explanation:
Genes are segments of DNA that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
What are chromosomes?Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
The term chromosome comes from the Greek words for colour (chroma) and body (soma). Scientists gave this name to chromosomes because they are cell structures, or bodies, that are strongly stained by some colourful dyes used in research. The unique structure of chromosomes keeps DNA tightly wrapped around spool-like proteins, called histones.
Without such packaging, DNA molecules would be too long to fit inside cells.
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What is global warming
Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released by people burning fossil fuels.
hope this helps ^^
What makes identifying minerals difficult even with a key?
Answer:
Identify minerals based on their physical characteristics. A hardness of 2.5 simply means that the mineral is harder than gypsum. Mohs In introductory geology, the key fracture types to remember are irregular, which most minerals exhibit.
Wind moving in the Southern Hemisphere will change direction to the left ?
True or false
Answer:
True
Explanation:
But because the Earth rotates, circulating air is deflected. Instead of circulating in a straight pattern, the air deflects toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere, resulting in curved paths. This deflection is called the Coriolis effect.
Answer:
true
Explanation:
which part of the cellular respiration breaks down glucose into pryuvate?
Answer:
Here u go if it's wrong sorry if it's correct u welcome ;)
Glycolysis is the splitting, or lysis of glucose. Glycolysis converts the 6-carbon glucose into two 3-carbon pyruvate molecules. This process occurs in the cytoplasm of the cell, and it occurs in the presence or absence of oxygen. During glycolysis a small amount of NADH is made as are four ATP.
What is biology of brown rat?
Based on the Resource Use and Conservation Virtual Lab, Which tactic can do the most to keep the water debt less than the water supply?
A. Outlawing water features in gardens
B. Replacing drip irrigation systems
C. Outlawing drip irrigation systems
D. Replacing thermal power plants.
Answer: D. Replacing thermal power plants.
Explanation:
Thermal Power Stations are some of the biggest users of water in the world because water is integral to producing electricity in them. These stations burn fossil fuels like coal which then vaporizes water so that it becomes steam which then drives turbines that produce electricity.
Water is also used for cooling high temperatures produced.
If these thermal stations are replaced with something that uses less water, it will go a long way in keeping the water debt less than the water supply.
HELPPPP
Which organelle helps
distribute chromosomes to new cells during cell division?
O vacuoles
O golgi bodies
O centrioles
O chromatin
When chromosomes do not separate you end up with a
gamete with to many or to few chromosomes. This is known
as...
Answer:
The phenomenon of unequal separation in meiosis is called nondisjunction. If nondisjunction causes a missing chromosome in a haploid gamete, the diploid zygote it forms with another gamete will contain only one copy of that chromosome from the other parent, a condition known as monosomy. I think sorry if wrong ;)
How many ATP are made in the kreb cycle part of cellar respiration?
Answer:
2 ATP are created in Kreb cycle
In which phase of cellar respiration is glucose a substrate?
Answer:
glycolysis
Explanation:
Answer:
answer of this question is glycolysis
:-))
Body Mass Reduction
At the end of the countercurrent flow, Anthony's mass had decreased to reach the goal.
What caused the decrease in Anthony's mass?
Answer: water is removed during dialysis therefore the excess water decreased his mass.
Explanation:
Answer:
water is removed during dialysis therefore the excess water decreased his mass.
Explanation:
HELP PLEASE!! ILL GIVE BRAINLIEST!!
______ plants are important in fixing nitrogen.
a. Legume
b. Berry
c. Nut
d. Poisonous
Answer:
A
Explanation:
Legume plants are important in fixing nitrogen. Therefore, the correct option is A.
Beans, peas, lentils and clover are examples of leguminous plants that are important for nitrogen fixation. They co-exist well with rhizobia, a type of bacteria that fix nitrogen. These bacteria live in nodules on the roots of legumes and use a process called nitrogen fixation to convert atmospheric nitrogen into a form that plants can use.
Legumes can obtain substantial amounts of nitrogen, an important nutrient for plant growth, without being entirely dependent on soil nitrogen, because of their ability to fix nitrogen. Legumes play an important role in agriculture and ecosystems, by adding nitrogen to the soil and increasing its fertility. Legumes are valuable crops because of their high protein content as well as their ability to improve soil health by fixing nitrogen.
Therefore, the correct option is A.
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(pls help giving away all my points!!!)
Write all possible genotypes for plants with the following phenotypes:
8. Terminal flowers
9. Green peas
10. White flowers
11. Smooth pods
12. Wrinkled peas
13. Constricted pods
14 Short
15. Axial flowers
16. Purple flowers
17. Round peas
18. Yellow peas
Answers are below:
8. aa
9. GG, Gg
10.pp
11. SS, Ss
12. rr
13. ii
14. tt
15. Aa, AA
16. PP, Pp
17. RR, Rr
18. gg
The rate limiting reaction of aerobic respiration involves the phosphorylation of __________ by the enzyme _______ . The rate at which this enzyme makes product is ___________when ATP levels rise because the molecule ___________binds to an _________ site on the enzyme and acts as a(n)_________ . When ATP levels fall ________ binds to ________of ____________. This interaction leads to an increase of cellular ___________ , so that this is a n example of a ___________ feedback loop.
Answer:
Explanation:
The rate limiting reaction of aerobic respiration involves the phosphorylation of fructose phosphate by the enzyme phosphofructokinase. The rate at which this enzyme makes product is [increased, decreased] when ATP levels rise because the molecule ATP binds to an allosteric site on the enzyme and acts as a direct inhibitor. When ATP levels fall AMP binds to the allosteric site of phosphofructokinase. This interaction leads to an increase of cellular ATP, so that this is an example of a negative feedback loop.
An aerobic respiration can be defined as a chemical and biological process that involves the use of oxygen in living organisms to make energy (ATP) from carbohydrates (sugars) during cellular respiration.
This ultimately implies that, an aerobic respiration can take place or occur in the presence of oxygen.
What is an enzyme?An enzyme can be defined as a biological catalyst that typically speeds up (accelerates) the rate of a chemical reaction, especially by lowering the activation energy of its chemical reactants.
Factors that affects an enzymeThere are four (4) main factors that affect the actions and the rate of an enzyme and these include the following:
The logarithmic concentration of hydrogen (pH).Temperature.Cofactors.Allosteric inhibitors.Read more on here:
Global warming is a theory accepted by a majority of scientists.
Please select the best answer from the choices provided
ОТ
OF
Answer:
F
because global warming did happen before lol and a theory is somethng u think exist so..
Explanation:
Answer:
True
Explanation:
What are two similarities between physical changes and chemical changes apart from the ones in the internet.
Answer:
Explanation:
physical changes are things that you can see, like actual changes. Chemical changes are things that you cant see like gas evaporating.
Sexual reproduction is important for the survival of the species. It is important for ALL BUT ONE of
these reasons. That is
A.causes new mutations to occur in the offspring.
B.it is more beneficial for the species than the individual (correct answer, your response)
C.promotes genetic variability among offspring.
D.it is necessary for the survival of the individual.
Answer:
A. The mutations of species can affect the animal by a large amount. Especially if the animal is prey for other animals.
Bison in Yellowstone National Park have a food-limited carrying capacity that determines how their population grows. If the population grows too large, some bison will either starve or migrate to search for more food. The park is able to support a maximum population of 4,500 bison. Park conservation officials must watch the population and prevent the bison from overpopulating, since they would migrate to nearby farms, causing agricultural damage and creating hazards to drivers. The bison begin to migrate when the population reaches 4,000 because of competition for food. If the current population size of bison is 3,652 and the maximum growth rate of the population is 0.28, calculate the population size after one year and determine whether the park will need to take measures to control the population.
A. The population will be 3,845 after a year. The bison will not pose a problem until the following year, and no conservation action will need to take place.
B. The population will be 4,675 after a year. Some bison will need to be removed to prevent migration, since they will surpass the resource availability.
C. The population will be 1,023 after a year, since the growth rate is too low. Conservation efforts will need to focus on increasing the bison population.
D. The population will be 4,500 after a year. The bison cannot exceed the carrying capacity, so they will stop reproducing. Some bison will need to be removed.
Answer:
A. The population will be 3,845 after a year. The bison will not pose a problem until the following year, and no conservation action will need to take place.
Explanation:
The exposed example refers to a population that exhibits a logistic growth model, Where the principal limiting factor is food availability
N is the total size of the populationNt the population size after a T timeK the carrying capacityr the population growth rate per capitaWhen N < K the population has not reached the maximum size that can be supported by the environment. It can increase in size.
When N = K the population has reached the maximum size that can be supported by the environment. It can not grow anymore. The population reached a maximum point delimited by available resources, such as food
When N > K the population has supered the maximum size that can be supported by the environment. It must decrease in size. because there are not enough resources.
To calculate the population size after one year, we need to use the following equation.
N t+1= Nt+rN(1-N/K)
Available data:
K = 4500
N = 3652
r = 0.28
Nm= 4000
N/K = 3652/4500 = 0.8115
r.N = 0.28 x 3652 = 1022.56
N t+1= Nt+rN(1-N/K)
N t+1= 3652+1022.56(1-0.8115)
N t+1= 3652+1022.56(0.1885)
N t+1= 3652+192.753
N t+1= 3844.75
rounding up to 3845