Answer:
23 pairs
Explanation:
there are 46 chromosomes, but 23 PAIRSHelp due today "Brainly Est for only correct answer"
when it exists within the environment inside a living cell
Which category of veins are the main conduit for blood, are surrounded by muscle, and have an accompanying artery
A bacterial culture grown in a glucose-peptide medium causes the pH to increase. The bacteria are most likely
Answer:
using the peptides
i hope that helps
hello humans ~
Based on the following options, how does a plant cell differ from an animal cell?
A. Cell wall
B. Both A and B
C. Mitochondrion
D. Chloroplast
Answer:
None of these? It's A and D.
Explanation:
None of these are correct as plant cells are unique in that they have a cell wall and chloroplasts. Was option B supposed to say A and D?
cellular respiration allows organisms to release the energy stored in the chemical bonds of glucose. the energy in glucose is used to produce ATP, which cells use to supply their energy needs. during aerobic cellular respiration, oxygen is reduced and ____ is produced as a by-product of this specific intermediate
reaction
Answer:
Carbon dioxide
Explanation:
hope it helps you<3The earth is located _______ of the Milky Way galaxy.
Answer: The earth is located at the edge of the Milky Way galaxy.
Hope this helps!
Which element is one of the six most common elements that make up the compounds in living things?
A. Chlorine
B. Helium
C. Sodium
D. Calcium
Please help me
Calcium is also one of the most common elements that make up the compounds in living things
Option D is the correct answer
Answer:
D can be comfirmed
Explanation:
Name the four ways exoplanets are discovered? Which of those methods are dependent upon another star?
Answer:Any planet is an extremely faint light source compared to its parent star. For example, a star like the Sun is about a billion times as bright as the reflected light from any of the planets orbiting it. In addition to the intrinsic difficulty of detecting such a faint light source, the light from the parent star causes a glare that washes it out. For those reasons, very few of the exoplanets reported as of April 2014 have been observed directly, with even fewer being resolved from their host star
Explanation:
The Colorado River carved out a deep canyon in the habitat of an Abert’s squirrel population. This is an example of which stage of speciation? Question 3 options: The populations become adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring. The populations successfully interbreed. The populations become totally separated from one another. The populations are isolated and thus do not interbreed.
The correct answer is the populations become adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring.
A species is a populace whose participants can interbreed and bring fertile offspring. Reproductive isolation takes place while a populace splits into corporations and the 2 populations now do not interbreed. When populations grow to be reproductively isolated, they could evolve into separate species.
What is speciation?Speciation is the evolutionary manner via way of means of which populations evolve to grow to be awesome species. The biologist Orator F. Cook coined the time period in 1906 for cladogenesis, the splitting of lineages, rather than anagenesis, phyletic evolution inside lineages.
Hence concluded that the populations become adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring.
To know more about speciation refer to the link :
https://brainly.com/question/1963978
Answer:
The answer is C) "The populations become totally separated from one another."
Explanation:
I took the test! This is right.
How does nitrification occur in nature, starting from gaseous Nitrogen?
Answer:
Either through bacteria or lightning
Explanation:
Nitrogen can be converted directly to nitrates through lightning.
It can also be converted to ammonia (NH3) through free-living nitrogen fixing bacteria e.g Azotobacter or fixed on plants by symbiotic micro-organisms e.g Rhizobium. The Ammonia formed is converted to Nitrites (NO2) by nitrifying bacteria e.g Nitrococcus bacteria. The Nitrites are converted to nitrates by other nitrifying bacteria e.g Nitrobactor
what is simple reflection
Explanation:
those reaction which occur in simple way is called simpley reaction
Who is the producer in this food web?
Snake
awk
Ov
Bird
Frag
Rabbit
Grasshopper
Mouse
Grasses
In photosynthesis conducted by plants, atp is made by.
Answer:
is synthesized in the thylakoid membrane of the chloroplast.
Explanation:
ello humans ~
what's dark reaction? explain in brief
Explanation:
any of a series of chemical reactions in photosynthesis not requiring the presence of light and involving the reduction of carbon dioxide to form carbohydrate especially : Calvin cycle
The atrioventricular valves open during __________.
Answer:
diastole
Explanation:
In 3 to 5 sentences, analyze potential impacts of oceans on human populations as the result of climate change in the current century
The impacts of oceans on human populations as the result of climate change in the current century include loss of lives and properties.
What is Climate change?This refers to the long-term shifts in temperatures and weather patterns. Global warming has resulted in the presence of warmer waters.
This promotes the development of stronger storms in the tropics, which can cause loss of lives and properties.
Read more about Climate change here https://brainly.com/question/24316365
A doctoral student is studying the genetic makeup of a species of jellyfish that occurs at low, middle, and high latitude regions of the Pacific Ocean. On an
oceanographic expedition, she collects specimens of the jellyfish throughout its range Upon returning to the laboratory at the university, an assistant places all of the
Jellyfish in an aquarium with an average temperature of approximately 20'C. After a few days, he notes that almost two-thirds of the jellyfish have died. Using the figure
below, how would you explain which jellyfish likely make up the bulk of the survivors and what the mistake was?
A. The survivors were likely collected from the dark gray areas on the map. those from other regions could not adapt
B. The survivors were likely collected from the light gray areas on the map those from other regions could not adapt.
C. The survivors were likely from the black areas of the map but had the most advantageous genes of those collected.
D. The survivors were likely from the black areas of the map but adapted to the difference in temperature in the laboratory.
The survivors were likely collected from the light gray areas on the map those from other regions could not adapt. That is option B
The effect of temperature change on organismsThere are some organisms such as plants and animals that are capable of changing and adjusting to different environmental conditions.
Aquatic animals such as jellyfish can adapt to warmer ocean waters, but not necessarily to extreme heat or extreme cold weather. That is, it can survive the temperature of 12 - 24°C as indicated in the figure.
But some species of jellyfish that has adapted in extreme cold and extreme hot weather, may find it difficult to abruptly adapt to an average weather.
Therefore when placed in the 20°C aquarium, they couldn't survive because of the temperature of the new environment.
Learn more about temperature change here:
https://brainly.com/question/13171014
Which of the following choices distinguishes an oxbow lake from a deep meander? (1 point)
A: A deep meander forms over soft rocks that are easily eroded. An oxbow lake forms where the river meets the ocean.
B: A deep meander is formed by erosion. An oxbow lake is formed by deposition.
C: A deep meander forms near the source of a river where water is fast-moving. An oxbow lake forms near the mouth of a river where water is slow-moving.
D: Water from a river flows through a deep meander. An oxbow lake is cut off from the river and contains still water. .
Answer:
B
Explanation:
give the girl/boy up there all credit.
hello humans ~
Which of the following is a communicable disease?
Diabetes
Chicken pox
Alzheimer’s
Cancer
Explanation:
the answer is chickenpox
Natural resource is the base of our survival
Answer:
water shelter food and air
Explanation:
we cannot survive with output these
You are studying the enzyme alcohol dehydrogenase in a population of Drosophila. The allele frequency of the fast allele is 0.3 and the allele frequency of the slow allele is 0.7. Assuming the population is in Hardy Weinberg equilibrium, what is the expected frequency of heterozygotes in the population
While doing field research, two scientists discover a new species of plant. They take the plant back to their lab to watch how it grows and reproduces. Soon, the plant begins to produce a small purple flower. Upon further investigation, the scientists discover that the plant's seeds contain two embryonic leaves. Which group could the plant belong to
A dicotyledonous plant is an angiosperm that produces flowers and their seeds contain two cotyledons. The new species belong to the dicotyledonous group.
What is an angiosperm?
Angiosperms are woody or herbal plants, with a wide diversity of biotypes. Among many other characteristics, we can mention the followings,
They have flowers that can be either hermaphrodites or unisêxual, usually protected by perianth leaves.
During fertilization, pollen grains get in touch with the ovule. They have double fertilization.
They produce seeds from ovules protected in ovaries or closed carpel cavities.
They can be either monocotyledonous or dicotyledonous since seeds have one or two cotyledons.
What are dicotyledonous plants?
Dicotyledonous are one type of angiosperms. Among many other characteristics, we can mention the followings,
Their seeds carry two embryonic leaves -cotyledons-.
They have a primary root from which many secondary roots emerge.
Their stem is ramified, and their leaves have a reticulated vein system.
According to the description, the new plant species belong to the dicotyledonous angiosperm group.
You can learn more about dicotyledonous at
https://brainly.com/question/1446249
Answer to 21?………………….
Answer:
its the first one is the correct answer
Answer:
They use ribosomes and molecules inside a host cell to reproduce
Explanation:
Viruses also known as the host cell and use its resources to make more viruses, basically reprogramming it to become a virus factory. Because viruses can't reproduce by themselves which also means without a host viruses are not considered living.
~Learn with Lenvy~
Number 3? Someone pls help me
Answer:
option C
Explanation:
please follow me
explain the processs of combustion
Answer:
Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is called the fuel, and the source of oxygen is called the oxidizer. The fuel can be a solid, liquid, or gas, although for airplane propulsion the fuel is usually a liquid.
Explanation:
A word that descibes air with a lot of water vapor is
Answer:
humidity
Explanation:
Answer:
Humid
Explanation:
When the air is humid, it has a lot of water vapor in it.
Give 3 reasons why plasmids are considered ideal vectors.
Answer:
Self-replicating: Plasmids contains origin of replication and hence they are able to multiply by themselves independently of the chromosomal DNA. They maintain their number in progenies.
ii) Low molecular weight: Plasmids have low molecular weight which makes them easy to handle and hence can be present in multiple copies.
iii) Multiple Cloning Sites: This is a site on plasmid which has recognition sites for many restriction enzymes.
iv) Selectable Marker: Plasmid has certain genes which help in identifying the transformed cells. For example, antibiotic resistance genes.
v) High copy number: Due to low molecular weight of plasmids, they are present in multiple copies. High copy number plasmids are require to produce large quantities of the recombinant DNA.
vi) Host range: Plasmids used as coning vectors have narrow host range so that transmission of these plasmids to other organism in environment is avoided.
Explanation:
How many kinds of organisms are there
2. Protistsare NOT decomposers
False
True
Answer:
False
Explanation:
Yes, protists are decomposers.
Protists include species such as protozoa, algae, and molds. Many protist species are decomposers, meaning they feed on dead organisms to meet their nutritional needs.
Pls, choose me as brainliest!
Using x-ray crystallography, as well as other methods, the researchers watson and crick discovered the ________________ structure of dna.
Answer:
Double-helix.
Explanation: