which of the following is correct about cells?
Answer:
The answer is the c part that states, in prokaryotes, there are no membrane-bound organelles.
The organelles are surrounded by the single or double membranes such as Lysosomes, mitochondria, nucleus, Golgi Bodies, chloroplasts, Endoplasmic Reticulum and so on.
However, these all are not present in the prokaryotes type of cell.
Explanation:
please mark this answer as brainliest
A girl holds her breath for 30 seconds, breathes out, and then breathes in. Compared with the air she breathes out, the air she breathes in contains less
A) carbon dioxide and water vapour
B) nitrogen and water vapour.
C) oxygen and carbon dioxide.
D) oxygen and nitrogen.
If brown hair is represented by the allele "B" and blond hair is represented by the allele "b" then what must the genotype(s) be of someone who has brown hair?
Answer:
Bb or BB
Explanation:
since brown hair was the dominant allele it only has to have one big B to serve as a heterozygous dominant trait. Therefore, the person has brown hair. If you were looking for blond hair it would have to be bb because it is a recessive trait and you need two recessive traits to make up a certain genetic trait.
Write out RNA strand that would be transcribed from following DNA sequence:
TTC AGC CAG
Exposure to certain environmental toxins, such as pesticides, may reduce fertility in males by interfering with their ability to produce gam
toxins are most likely having an effect on the
testes and progesterone
2.
ovaries and testosterone
3.
ovaries and estrogen
4
testes and testosterone
Answer:4
Explanation: i’m smart
please I need help with biology hw
please help me
An ecosystem that develops from barren rock is known as?
The rebuilding of an ecosystem after a natural disaster
is known as?
Explain why secondary succession is a faster process than primary succession.
Answer:
Ecological succession happens when new life takes over an environment. ... Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier. The first inhabitants are lichens or plants—those that can survive in such an environment
Ecological restoration aims to recreate, initiate, or accelerate the recovery of an ecosystem that has been disturbed. Disturbances are environmental changes that alter ecosystem structure and function. Common disturbances include logging, damming rivers, intense grazing, hurricanes, floods, and fire
Secondary succession is usually faster than primary succession because soil and nutrients are already present due to 'normalization' by previous pioneer species, and because roots, seeds and other biotic organisms may still be present within the substrate
What part did undeveloped and developing countries play in the Industrial
Revolution
Answer:
Explanation:
What happened to animals are producers are not available to photosynthesize?
Answer:
They will find another food source or starve
)Winds occur
because of convection currents the troposphere. How do you think winds affect
air pollution?
Every ____ has a specific _____
• cell membrane
• function
• cell wall
• chloroplast
• mitochondria
• nucleus
• cytoplasm
• organelle
Answer:
Every organelle has a specific function
FRAMESHIFT mutation. Explain what this means and how it affects the
protein
Explanation:
frameshift mutation is a type of mutation involving the insertion or deletion of a nucleotide in which the number of deleted base pairs is not divisible by three. ... Each group of three bases corresponds to one of 20 different amino acids used to build a protein.
genome dot gov
How do cancer cells differ from normal cells? Select all that apply.
A
they do not stop at checkpoints
B
they condense their DNA into chromosomes for cell division
C
they have uncontrolled growth
D
they go through the S phase
Answer: A and B
Explanation:
Cancers cells differ from normal cells because they do not stop at checkpoints and they have uncontrolled growth. So, options A and C are correct.
What do you mean by Cancerous cells?Cancerous cells may be defined as an abnormal cell that doesn't follow the regulations of the cell cycle. They get multiply at a rapid speed.
Normal cells follow a typical cell cycle. They grow, divide and finally die. But cancer cells do not follow the cell cycle, they do not undergo apoptosis, and they continuously multiply at a rapid pace.
Therefore, Cancers cells differ from normal cells because they do not stop at checkpoints and they have uncontrolled growth.
To learn more about Cancerous cells, refer to the link:
https://brainly.com/question/373177
Please help me. Thank you :()
Question 6 help me answer 6
Answer:
the first one or the last one
Explanation:
Describe digestion in humans
Answer:
A mass of nutrients enters a stomach full of strong, hydrochloric acid. The acid gets rid of all of the waste material, which is then expelled.
Explanation:
Answer:
A mass of nutrients enters a stomach full of strong, hydrochloric acid. The acid gets rid of all of the waste material, which is then expelled.Explanation:
Asexual reproduction is observed in………………..
(a) cow
(b) buffalo
(c) sponge
(d) hen
The phylum for invertebrate animals with jointed legs is Arthropoda.
The phylum Arthropoda contains a wide diversity of animals with hard exoskeletons and jointed appendages. Many familiar species belong to the phylum Arthropoda—insects, spiders, scorpions, centipedes, and millipedes on land; crabs, crayfish, shrimp, lobsters, and barnacles in water (Fig. 3.72).
What do you think the color of the pea plants has to do with genes?
Answer:
According to Mendel Gregor, he analyzed two plants can make a different offspring. It depends on the alleles. I hope this helped!
Explanation:
Answer:
The instructions for making a pea plant are found in its genes. Each gene has the instructions for one small part of the pea plant. There is a gene that determines the color of the peas the plant will produce. These genes can come in all different versions.
Question 23 (6 points)
Sea Urchins are aquatic mammals that dive down to catch and eat sea urchins. Sea
urchins hunt the sea floor to catch and eat starfish. Starfish feed off of kelp forests
under the sea.
When sea otters overpopulate they clean out the sea urchins very quickly. This
allows the starfish to overpopulate and eat too much of the kelp forests.
Answer the following questions for 2 points each:
1. Name the TWO organisms that act as Carnivores in the ecosystem described
above.
2. Identify the ecological roles of the other TWO organisms.
3. Identify which of the four organisms above would be considered a keystone
species. Explain why.
Answer: 1. Sea urchins and sea otters
2. They are prey for carnivores.
3. Sea otters, star fish
Explanation:
Sea urchins and sea otters are carnivores as they eat on the flesh of starfish and sea urchins respectively.
Starfish feed on the kelp forests which are the producers in the food chain and the starfish is the primary consumer and prey for sea urchins. So, starfish and kelp forests are the prey in the marine ecosystem.
Keystone species is the one which controls the population of other inferior species in an ecosystem. Here, sea otters consume sea urchins so the population of sea urchins remained in control Starfish controls the population of kelp forest.
(Target 7) The first plants to grow after a fire are called the_____
Climax Community,
Succession Community,
O Pioneer Species or
Primary Succession Species
Answer:
pioneer species
Explanation:
In a given population of plants there is variation in the time of day when flowers open. Those individual plants with flowers that open at night would be more likely to pass on this trait in an environment
dominated by what?
A Solar radiation
B. Nocturnal pollinators
c. Moist sol
D. Grazing animals
Answer: B is the answer. Hope this helps!
HELP!
Beginning around 1750,the global human population began to grow at much faster then it had in the years before this time.What caused this to change in the population growth rate?
Answer:
The cartogram is made up of squares, each of which represents half a million people of a country’s population. The 11.5 million Belgians are represented by 23 squares; the 49.5 million Colombians are represented by 99 squares; the 1.415 billion people in China are represented by 2830 squares; and the entire world population of 7.633 billion people in 2018 is represented by the total sum of 15,266 squares. It started in 1798, to the 1800. This period is when the human population began to grow at a faster rate then any other time in history. The answer is 300 years ago.
Explanation : Births - usually measured using the birth rate (number of live births per 1,000 of the population per year). Deaths - usually measured using the death rate (number of deaths per 1,000 of the population per year). Migration - the movement of people in and out of an area.
The atoms of certain element each contain 36 protons and 8 valence electrons. Which statement correctly identifies this element and describes its chmical reactivity?
Answer:
This question lacks options, the options are:
A The element is krypton, Kr, and it is not very reactive.
B The element is chlorine, Cl, and it is highly reactive.
C The element is krypton, Kr, and it is highly reactive.
D The element is chlorine, Cl, and it is not very reactive.
The correct answer is A
Explanation:
An atom is identified by its atomic number, which is the number of protons it contains. In this question, it is said that the atoms of a certain element each contain 36 protons. Using the periodic table, the element with atomic no. 36 is KRYPTON.
Also, Krypton posseses 8 valence electrons in its outer shell. In accordance to the octet rule, Krypton has no further need to engage in any chemical reaction to fill its electron shell because it is already filled (8 valence electrons). This accounts for the reason Krypton belongs to "Noble gases" and very unreactive.
ANSWER PLS DONT PUT LINKS
Answer: C!! :)
Explanation:
Chromosomes are SMALLER than genes and are found in DNA.
True
False
Answer:True
Explanation:
Select the true statement.
Cells, tissues, and organs all work together to make up
organ systems.
The smallest and simplest systems within organ systems
are the organs.
Organ systems work independently from the rest of the
body.
PLEASE HELP ILL GIVE BRAINLEST
The diagram shows a nephron.
A nephron. W points to branch of renal artery. X points to branch of renal vein. Y points to tubular point of nephron. Z points to collecting duct.
Where is the blood first filtered?
W
X
Y
Z
I hope this helps A nephron. W points to branch of renal artery. X points to branch of renal vein. Y points to tubular point of nephron. Z points to collecting duct.
Where is the blood first filtered?
W
X
Y
Z
Answer: A
Answer:
W
Explanation:
I just did the quiz
no links! pls help
What process is occurring in the illustration?
a) classic ecosystem
b) climax community
c) primary succession
d) secondary succession
classic ecosystem
Explanation:
because i love
Answer: D
Secondary Succession
Explanation:
I took the quiz.
PLEASE HELP ILL GIVE 50 POINTS AND BRAINLIEST.
23.How are lungs a benefit over simple diffusion for getting oxygen?
24.What is the relationship between the alveoli and capillaries?
25.Make an argument that the heart is the most important part of the circulatory system.
26.Make an argument that the blood is the most important part of the circulatory system.
Answer:
23.oxygen diffuses through alveoli walls to the blood capillaries
24.blood capillaries surround alveoli
25. pumps blood which carry all the body minerals all over the body from the lungs and to all body parts