Which of the following increases genetic variation by forming entirely new alleles?
Natural selection
Genetic drift
Mutation
Gene flow
Answer:
Mutation causes brand new alleles the others just modify the rates at which preexisting alleles appear in the population.
What differences exist between the Zone of Maturation and Zone of Elongation?
Answer: Root growth begins with seed germination. ... The zone of elongation is where the newly formed cells increase in length, thereby lengthening the root. Beginning at the first root hair is the zone of cell maturation where the root cells begin to differentiate into special cell types.
Explanation:
The time for one rotation of the Moon is 27.3 days. What is the time revolution for the Moon?
365 days
24 days
24 hours
27.3 days
Answer:
i believe it is 27.3
Which series is arranged in order from largest to smallest in size?
The process used to build protein
Answer:
Protein synthesis
Explanation:
Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation.
Select the elements that have 4 valence electrons.
hydrogen (H)
krypton (Kr)
strontium (Sr)
carbon (C)
oxygen (O)
tin (Sn)
HOW DO I FIND THE PERCeNT
N:no ears
n:has ears
-what percent of the offspring will have ears????
Answer:
50% will have ears
Explanation:
To have ears you must have the trait nn since the ears trait is recessive, 2 of the four possible offspring are like this, so 50%
4 functions specific to sponges
Answer:
Although sponges do not have organized tissue, they depend on specialized cells, such as choanocytes, porocytes, amoebocytes, and pinacocytes, for specialized functions within their bodies. The mesohyl acts as a type of endoskeleton, helping to maintain the tubular shape of sponges.
Explanation:
this what I found when searching for the answer lol
Fossils can be body parts of ancient organisms, or they can be traces. Give five examples of trace fossils
Answer:
Trackways/footprints, mold and cast fossils, feeding marks, coprolites, and burrows. Trace fossils show the activity of ancient organisms rather than the body fossil itself. However, it is rather difficult to identify an organism by use of mere trace fossil, and therefore, it is less accurate.
- Cyanide is a strong cytochrome c oxidase inhibitor. Cytochrome c is the last enzyme in the
electron transport chain. If cell is exposed to cyanide, most of the cyanide will be found in which
of the organelles?
Cyanide binds to Fe3+ in heme-containing proteins. This inhibits the terminal cytochrome complex IV of the electron transport chain. The blocklock of complex IV by cyanide depletes ATP culminating in cell death. Oxygen is unable to reoxidize the reduced cytochrome a3. Thus, cellular respiration is inhibited, as well as ATP production, in essence depriving the cells, tissue, and, ultimately, the whole body of oxygen. Hypoxia evolves into metabolic acidosis and decreased oxygen saturation. The extent of lactic acidosis indicates the severity of the cyanide poisoning. In a collapsed individual, plasma lactate is an indicator of cyanide poisoning. In severe cyanide poisonings, up to 98% of the cyanide in the bloodstream is tightly bound to red blood cells. The ancillary response is myocardial depression and decline in cardiac output. Bradycardia, hypotension, and cardiac arrhythmia then develop into VF and cardiovascular collapse.
please mark in brain list
Community one contains 100 individuals distributed among four species (A, B, C, and D). Community two contains 100 individuals distributed among three species (A, B, and C). Which community is more diverse?
Community one: 10A, 5B, 75C, 10D
Community two: 30A, 40B, 30C, 0D
Community one: 24A, 26B, 26C, 24D
Community two: 5A, 50B, 40C, 5D
please help me on this and no link's please
Answer:
A would be the best answer.
Explanation:
A seems to be the answer that matches data shown on the graph.
What happens when you combine two clear liquid solutions, a thick black solid material forms on the bottom of the beaker.
Answer:
See explanation
Explanation:
A precipitate is formed when a mixture of two soluble substances results in the formation of an insoluble product. It usually happens during a double decomposition reaction.
The two clear liquids combined both contain soluble substances. These interact to yield an insoluble product also known as a precipitate which is black in colour and settles on the bottom of the beaker.
why is photosynthesis a good name for this process?
Answer:
photo means "light" and synthesis
means "to put together".
To extract DNA from strawberries a
was used first to break down cell membranes.
O base solution
O isopropyl
O alcohol solution
O buffer solution
which best describes a difference between transcription and DNA replication?
a.transcription does not require dna
b.only transcription happens in the nucleus
c.dna replication takes place in the ribosome
d. dna replication uses thymine
Answer:
D: DNA replication uses thymine
Explanation:
Make sure to look up your question before you ask it, as there was already an answer to this exact question: https://brainly.com/question/18486826
PLEASE HELP 15 POINTS
Which of the following describes fossil evidence that supports biological evolution?
Fossils of an unknown species found in isolation from any other species
Fossils of an unknown species that is an intermediate form of two other species
Fossils of different species found within the same geographic area
Fossils of the same species found in a variety of geographic regions
Answer:
Fossils document the existence of now-extinct species, showing that different organisms have lived on Earth during different periods of the planet's history. They can also help scientists reconstruct the evolutionary histories of present-day species.
The following describes fossil evidence that supports biological evolution: fossils of an unknown species that is an intermediate form of two other species that are present in Option B, the second option.
What is "fossil evidence"?Fossil evidence is one of the most important forms of evidence that supports biological evolution. Fossils are the preserved remains or traces of organisms that lived in the past, and they provide valuable information about the history of life on Earth. Fossils can tell us about the age, morphology, behavior, and distribution of ancient organisms, and they can also provide evidence for how these organisms have changed over time. One of the most important types of fossils that support biological evolution is the transitional fossil.
Hence, the correct answer is fossils of an unknown species that is an intermediate form of two other species that are present in Option B, the second option.
Learn more about the fossil evidence here.
https://brainly.com/question/11830342
#SPJ3
Which protist exhibits both animal-like and plant-like characteristics?
a protist that has pseudopods and swims by using cilia
a protist that makes its own food and has glass-like cell walls
a protist that is a heterotroph and has chlorophyll
O a protist that can move or be stationary
Hi there!
I think the answer would be a protist that is a heterotroph and has chlorophyll. The protist falling under this category is called Euglena. Euglena has the ability to synthesize food using its chlorophyll, but if the light gets scarce it can utilize its heterotroph qualities and catch food instead.
I hope this helps!!
Answer:
c
Explanation:
so um im taking a biology test rn, and i need help on it. i was wondering if someone could help me?
Answer: yes
Explanation:
In which grade does a child learn to read aloud with fluency
The answer is 4-8.
yea that it
what system carries auxin to move to the darker side?
a) dermal
b) immune
c) reproductive
d) vascular
what system protects outer cover if that body
Answer:
This would be the The integumentary system
Explanation:
I will write it in comments
Where are aquifers drying up the fastest? Why are they drying up?
Answer: Aquifers that are drying up are mainly near arid climates, large cities, or agricultural stations, like farms.if the aquifer is shallow enough and permeable enough to allow water to move through it at a rapid-enough rate, then people can drill wells into it and withdraw water Excessive pumping can lower the water table so much that the wells no longer supply water they can "go dry."
Memory effector cells are also produced in the case that the same pathogen enters the organism again.
true or false
Answer:
True
Explanation:
The first contact that an organism has with a particular antigen will result in the production of effector T and B cells which are activated cells that defend against the pathogen. ... Memory T and memory B cells are also produced in the case that the same pathogen enters the organism again.
What is groundwater used for in the United States?
A)
mining
B)
firefighting
C)
use in homes
D)
crop irrigation
E)
all of the above
Answer:
e.) all of the ABOVE
Explanation:
edg2021
Explain briefly about how
implantation of embryo take
place
in the uterus.
Answer:
Implantation is the mechanism by which a blastocyst, which is passing through the uterus as a developing embryo, makes contact with the uterine wall and remains bound to it before birth. The uterine lining (endometrium) undergoes several internal modifications in order to allow for the emerging blastocyst to bind to it.
Explanation:
- Eijiro <3
Where does the fruit develop from?>
A. ovary
B. leaves
C. stem
the fruit develops from ovary
What´s the final answer
Answer:
secondary succession
Explanation:
This land from can occur at a divergent plate boundary?
A) ocean trench
B) mid-ocean ridge
C) tall mountains
D) transform fault
Hellpppppppp
Answer:
B
Explanation:
What are the characteristics of calcium in the human body ?
Answer:
look below
Explanation:
Calcium is very essential in muscle contraction, oocyte activation, building strong bones and teeth, blood clotting, nerve impulse, transmission, regulating heartbeat and fluid balance within cells. Brainliest please.