Answer:
1977 is when people first knew about archaebacteria
Answer:
it was actually discovered in 1922
they didnt know what it actually was until 1977.
C.1977
Explanation:
Which process produces haploid cells?
A. Meiosis
B. Mitosis
Answer:
the answer is: A
meiosis
The right answer is A Meiosis
Please help, I need it fast!!!
Answer:
Question 1
B
Question 2
A
Question 3
i don't know this answer, sorry
Question 4
C
How does mutation change allele frequency
A. It forces evolution to happen by introducing new adaptions.
B. It causes some individuals to go extinct because their mutations hurt their chance of survival.
C. It adds new genes into the gene pool that didn't exist there before.
Answer:
C. It adds new genes into the gene pool that didn't exist there before.
Explanation:
Mutations add new alleles into a gene pool. It increases the population's genetic variation.
The kidneys are organs that are involved in which process in mammals?
A synthesis
B excretion
C respiration
D transport
Answer: B
Explanation: The kidneys are part of the urinary system. Urinating is excreting. (God that word is so weird)
Archaea are often called _________ because they live in areas where most living things couldn't survive.
A. hydrophiles
B. extremophiles
C. heterotrophs
Answer:
B. extremophiles
Explanation:
Archaea are often called extremophiles because they live in areas where most living things couldn't survive.
What do we pass onto future generations?
A. Bacteria
B. DNA
C. Homework
Answer:
B. DNA
Explanation:
DNA is passed on from generation to generation. This is the genetic information and tells the cells what to do and how to operate. So this information does in fact need to be passed on.
When a single species, such as ancestor of the Galapagos finches, has evolved into several different forms that live in different ways we say that_ has occurred.
A.adaptive radiation
B.coevolution
C.mass extinction
D.punctuated equilibrium
Answer:
A
Explanation:
In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, alters biotic interactions or opens new environmental niches.
draw any two microbes
In the attachment are some examples:
Which word has a similar denotation to the word skinny but a more positive connotation?
Select one:
overweight
underfed
scrawny
slender
Answer:
I think slender is the answer
When purified virulent pneumococci DNA was introduced to avirulent pneumococci, Avery and his colleagues observed _____. Multiple choice question. no death in test animals only growth of avirulent pneumococci, indicating DNA was NOT the agent of transformation death of test mice growth of virulent pneumococci, indicating DNA was the agent of transformation
Answer:
death of test mice, growth of virulent pneumococci, indicating DNA was the agent of transformation
Explanation:
In an experiment conducted by three scientists namely: Oswald Avery, Colin MacLeod and Maclyn McCarty in 1944, it was proven that DNA is the substance that causes transformation in bacteria as opposed to proteins.
In this experiment, Avery and his colleagues combined a dead but virulent strain of Streptococcus pneumoniae & a living but avirulent strain of the same bacterium and inserted into a living rat. They found out that the test specimen (rat) died and observed the growth of the virulent pneumococci.
This suggests that the virulent strain of bacteria has transferred its virulent DNA via transformation into the avirulent strain to kill the rat. Hence, indicating DNA as the agent of transformation.
If you could genetically engineer any species of organism, what would it be? Would it be a unicorn? A
dog-cat hybrid? Your own personal pet giant? Choose any species--real or not--that your imagination
desires!
Write a paragraph describing your species, what it looks like, and where it lives. Think of any inherited
traits the species has that might help it survive in its environment. Thinking of these traits now can help
you come up with allele combinations in the next step. Now describe your species in the answer space.
Answer:
the species I would combine would be a trapdoor spider and a eel yeah its a unusual mix but at the same time it would be interesting to see because image a eel having 8 legs and spider fangs and armored skin it would most likely also be twice the size of a normal eel or even might have a mutation but who knows
The alteration of the natural gene is called genetic engineering. Genetic engineering helps to cure various diseases, these diseases are as follows:-
ADA syndromeRNAi interferenceGenetic engineering help to make the new organism with the crossing of the two new species.
If I had to choose the an organism I would choose CAT as they are very familiar and easy to work on.
The alleles of the different organisms help to make a new character.
For more information, refer to the link:-
https://brainly.com/question/2817451
Which can more efficiently supply nutrients and
expel waste products?
A. larger cells
B. smaller cells
C. cells with lower surface area to volume ratio
D. cells shaped like a cube
Answer:
Smaller Cells
Explanation:
Basically, small cells have larger surface area but smaller volume, its vice versa for larger cells.
Not to forget that the functions of a cell are related to the diffusion, osmosis and active transport movement.
Factors to consider for a faster diffusion/ osmotic movement includes:
Surface Area
Size of molecule
Difference in concentration gradient
Temperature
Distance
So as per the factors, when there is a larger surface area, the rate diffusion/ osmosis increases hence increasing its efficiency.
Humans use special body parts for functions such as breathing and breaking down food. Some living things, such as bacteria, are too small to perform these functions. True false Submit
Answer:
False
Explanation:
Bacteria do not have organs like humans. However, bacteria have specific structures to perform certain essential functions.
Among the bacteria, there are the respirators, which perform aerobic cell respiration, where oxygen gas is the final acceptor of hydrogen ions. Also, some bacteria perform anaerobic cell respiration. In those, oxygen gas is replaced by other molecules, which function as hydrogen acceptors such as nitrates or sulfates. Bacteria respiration occurs through the mitochondria.
In addition, bacteria can have different forms of "obtaining food"
Some can obtain their food through photosynthesis, degrading organic compounds. Other types of bacteria use the energy released in oxidation reactions of inorganic compounds, such as those that participate in the nitrogen cycle.
Finally, there are saprophagic bacteria, which obtain food from corpses and the remains of living beings, and the parasite ones, which find this food in the tissues of living beings, often causing them illness.
Which structure(s) are connected to the peripheral nervous system? Select all that apply.
Answer: Here you go
Explanation: nerves (cranial, spinal, and peripheral) and neurons (sensory, motor)
Answer:
A Sense organ, A muscle, And A gland
Explanation:
If an average cell in an organism lives for 40 hours, how much time would it spend in each of the phases?
Answer:
A cell spends most of its time in (M phase) or metaphase, this is when the cell divides. The Ameba sisters videos can help you.
Explanation:
Si el genoma de una especie contiene un 40% de la base timina, ¿cuál será el porcentaje de guanina del genoma de esta especie? 10% 35% 60% 30% 20%
Respuesta:
El porcentaje de guanina del genoma de esta especie será del 60%.
Explicación:
El genoma de todas las especies está compuesto por ADN (ácido desoxirribonucleico) bicatenario, lo que significa que tiene dos cadenas. Estas cadenas se unirán la una con la otra mediante un componente muy importante en los nucleótidos: las bases nitrogenadas que pueden ser de 4 tipos distintos: timina (T), guanina (G), adenina (A) y citosina (C). Los nucleótidos se aparean siempre de la misma manera para formar pares de bases: citosina con guanina (C-G) y adenina con timina (A-T). De esta manera, podemos inferir que si hay un 40% de base timina en el genoma de una especie, se unirá con un 40% de adenina, y el 60% restante serán pares C-G.
La respuesta correcta es entonces 60%.
What was the environmental factor MAINLY responsible for the changes which were seen in the graph in Figure 3?
Answer:
my answer
Explanation:
the sun is rising in noon and at it's very height, carbon-dioxide levels are LOW because the more sunlight plants get, THE MORE PLANTS CONVERT SUNLIGHT WITH CARBON DIOXIDE INTO OXYGEN AND REMOVE CARBON DIOXIDE FROM ATMOSPHERE
Answer:
it seems that there aren't any factors that can really support it but i would say that the percent seems to lower because of the temp change
Explanation:
Beth broke her ankle bone. The doctor gives her a brochure on foods she can eat to help restore the
health of her
bones. Which element will help Beth
strengthen the bone?
Answer:
Phosphorus
Explanation:
Edge2021
Which of the following does NOT affect the flow of groundwater through an aquifer ? a. porosity C. gradient b . chemical weatheringd. permeability
Answer:
b . chemical weathering
Explanation:
Chemical weathering is not affected the flow of groundwater through an aquifer but affect by the porosity and permeability. The rate of groundwater flow is controlled by two properties of the rock which are porosity and permeability. Porosity is the percentage of void space in a rock while on the other hand, Permeability is the quality of being permeable means able to be penetrated or passed through by a liquid or gas.
HURRYY, 50 PTS AND ILL MARK AS BRAINLIST !!
describe the interrelationships between the skeletal systems and the integumentary, muscular, cardiovascular and urinary systems
Answer:
Without the skeletal system holding the body together and supporting structure, the muscular, cardiovascular, and urinary systems would be crushed under the impact of our body mass.
Explanation:
What would happen if a populations chose their mates randomly?
A. Allele frequency would be constantly changing at random
B. The allele frequency would stay relatively the same over time because there are no traits that are being selected for.
C. Randomly mating allows the most beneficial traits to be passed on because more individuals are going to select for them.
D. Allele frequency would begin to favor the dominant trait.
Answer:
B. The allele frequency would stay relatively the same over time because there are no traits that are being selected for.
Explanation:
Like recombination, non-random mating can act as an ancillary process for natural selection to cause evolution to occur. Any departure from random mating upsets the equilibrium distribution of genotypes in a population. This will occur whether mate selection is positive or negative assortative.
Evidence overwhelmingly suggests that all life on earth is related.
A. TRUE
B. FALSE
Answer:
true
hope helpful answer
Domain is the least inclusive group of all of the categories.
A. True
B. False
Answer:
B. False
Explanation:
Within this hierarchy, living things are organized from the largest, most-inclusive group (domains) down to the smallest, least-inclusive group (called species). Domain: Domains group organisms by fundamental characteristics like cell structure and chemistry. The three domains are Bacteria, Archaea, and Eukarya.
Answer:
B. False
Explanation:
Domain is not the least inclusive group of all of the categories. The three domains are Bacteria, Archaea, and Eukarya.
Ninety-nine percent of the oxygen reaching cells can be best
represented by
Answer:
Hbo2
Explanation:
Ninety-nine percent of the oxygen reaching cells can be best represented as oxyhemoglobin
List two functions of the skeleton (2)
Answer
The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals. The skeletal system is also called the musculoskeletal system.
Explanation:
Luminosity has do with brightness of a star. It's essentially the power of the star, or how light is being emitted from the surface. About how much brighter is Antares than the Sun
6) What term describes an educated guess that needs to be tested by
experimentation?
Hypothesis
Gravity
Biology
Scientific Law
Theories
In an energy pyramid, up to 10% of energy is transferred between trophic levels. Suppose the producer level has 50,000 J. Approximately how much energy is available to the next level, the primary consumer, in this energy pyramid?
Answer: 5,000
Explanation:So it is the 10% law, this is an example 10,000 for the first animal, 1,000 for the second and 100 for the third. So for 50,000 it would be 5,000 for the next
Which term refers to the energy an object has due to its position?
Answer:
Potential Energy.
Explanation:
Potential energy, stored energy that depends on different parts of the system's relative position. When compressed or stretched, spring has more potential energy.
A stainless steel ball has more energy than it had when it fell to the world. It is able to do more work in the raised position.
Potential energy is a system's property and not a single body or particle. The earth-consistent system and raised ball, for instance, have greater potential energy as the two are more distinct.
For the trait of color in these beetles, where brown (B) is dominant to green (g), what is the phenotype ratio of the possible offspring of two heterozygous beetles?
Answer:
the answer is the last option 75% brown and 25% green.