The organisms once referred to as blue-green algae, which carry out photosynthesis, were found to be lacking a membrane-bound nucleus and choroplasts. They are:
Answers
The organisms once referred to as blue-green algae, which carry out photosynthesis, were found to be lacking a membrane-bound nucleus and choroplasts. They are: cyanobacteria
The term "blue-green algae" was historically used to refer to a group of photosynthetic organisms that were classified as algae but are now known as cyanobacteria. Cyanobacteria are prokaryotic microorganisms, meaning they lack a membrane-bound nucleus and other membrane-bound organelles found in eukaryotic cells.
1. Prokaryotic Nature: Cyanobacteria belong to the domain Bacteria and are characterized by their prokaryotic cellular organization. Unlike eukaryotic cells, prokaryotic cells do not have a well-defined nucleus enclosed by a nuclear membrane.
2. Absence of Chloroplasts: Chloroplasts are specialized organelles responsible for photosynthesis in eukaryotic cells. However, cyanobacteria carry out photosynthesis using specialized structures called thylakoids, which are not enclosed within a membrane-bound chloroplast. Thylakoids are found within the cytoplasm of cyanobacterial cells.
3. Photosynthetic Capability: Despite lacking a membrane-bound nucleus and chloroplasts, cyanobacteria are capable of performing photosynthesis. They possess pigments such as chlorophyll and phycocyanin, which allow them to capture sunlight energy and convert it into chemical energy through the process of photosynthesis.
4. Unique Features: Cyanobacteria exhibit some distinctive features that differentiate them from other bacteria and eukaryotic algae. They can form colonies or filaments, and some species can fix atmospheric nitrogen, contributing to the enrichment of nitrogen in ecosystems.
In summary, the organisms previously referred to as blue-green algae are now recognized as cyanobacteria. These prokaryotic microorganisms lack a membrane-bound nucleus and chloroplasts but are still capable of performing photosynthesis using specialized structures within their cells.
To know more about chloroplasts click here:
https://brainly.com/question/29066820
#SPJ11
Related Questions
Question 1 (1 point)
(07.02 LC)
Dan wants to arrange his red, blue, and green bags in a row on a shelf. Which tree diagram best shows the sample space of all the possible ways to arrange the three bags in a row on a shelf, where R is red, B is blue, and G is green? (1 point)
a
A tree diagram is shown. The lines branch out to R, B, and G. In the first row, the lines branch out from R to B to G and from R to G to R. In the second row, the lines branch out from B to R to G and from B to G to B. In the last row, the lines branch out from G to R to B and from G to B to R.
b
A tree diagram is shown. The lines branch out to R, B, and G. In the first row, the lines branch out from R to B to B and from R to G to B. In the second row, the lines branch out from B to R to B and from B to G to R. In the last row, the lines branch out from G to R to B and from G to B to R
c
A tree diagram is shown. The lines branch out to R, B, and G. In the first row, the lines branch out from R to B to G and from R to G to B. In the second row, the lines branch out from B to R to G and from B to G to B. In the last row, the lines branch out from G to R to B and from G to B to G.
d
A tree diagram is shown. The lines branch out to R, B, and G. In the first row, the lines branch out from R to B to G and from R to G to B. In the second row, the lines branch out from B to R to G and from B to G to R. In the last row, the lines branch out from G to R to B and from G to B to R.
please help ill mark brainlest
Answers
Answer:
I've done this one before it's B
Answer:
B
Explanation ;p
gene mutations can be caused by many things. these mutations are biologically important because they
Answers
Answer: Can result in a new variety of gene combinations in the species.
Explanation:
asexual reproduction in hydra is called
Answers
Answer:Budding
Explanation:
It's a type of vegetative (asexual) reproduction where cell division takes place on paeticular sites on the body of the Hydra, producing new outgrowths (hydras) that break away after maturity.
Thinking about Making New Cells
New cells are made every second. Select every example that would involve new cells being made.
an egg being fertilized by a sperm and developing into a zygote
a child growing
a bacterial cell reproducing
a pollen grain landing on a plant ovule that will develop into a seed
a burned area of skin healing
Answers
An example which shows that new cells are being made include the following below:
An egg being fertilized by a sperm and developing into a zygote.A child growing.A pollen grain landing on a plant ovule that will develop into a seed.What is a Cell?This is referred to as the simplest unit of life and undergoes division on the form of meiosis and mitosis to produce new cells.
An egg being fertilized by a sperm and developing into a zygote and a child growing requires the production of new cells and the cell division involved are meiosis and mitosis respectively.
Read more about Cell here https://brainly.com/question/3717876
#SPJ1
Choose all that applyChoose all that apply What causes the relationship of carbon?
1.The death of living things
2.Volcanic eruption
3.burning fossil fuels
4.fires
Answers
1. Which of the following elements is the LEAST abundant in living organisms?
a oxygen
b nitrogen
c phosphorous
d sulfur
Answers
Answer
Sulfur is the least abundant in living organisms.
sulfur is the LEAST abundant in living organisms among the options.
Living organisms are composed of Chemical elements which constitute the build up organelles, cells, tissues, and organs.
The Chemical elements are divided into:
Essential elements : These essential elements are 11 in number ad also subdivided into the major essential elements which make up about 99% of the human body mass. They include Oxygen, hydrogen, nitrogen, carbon, calcium, and phosphorus. The remaining five (least essential elements) consists of Sulfur, potassium, sodium, chlorine, and magnesium which make up about 0.85% of the remaining mass. Trace elements:.The trace elements comprises of the remaining 0.15% of the human body is comprised of trace elements. Whether they may be essential for life, is still being researched for evidence.Arranging the essential chemical elements according to abundance in living orgasm we have:
Oxygen 65.0% of body massCarbon 18%Hydrogen 10%Nitrogen 3% Calcium 1.4 %Phosphorus 1.1% Potassium 1%SulfurChlorineMagnesiumWe can therefore conclude that from the question Sulfur is the least abundant in living organisms.
See here for more on abundance of elements in living organisms: https://brainly.com/question/25935554
Which land biome has the greatest biodiversity?
Which of the following is most likely to have a positive effect on biodiversity?
A. Increasing people's awareness of pollution.
B. Replanting trees and other plants in a park.
C. Recycling glass, aluminum, and plastic.
D. Pouring oil onto the ground.
Answers
Answer: personally i would say b
Explanation: different plants will help biodiversity.
hope this helps :)
glacial deposits and fossils of ancient polar plants are currently found near the equator because the:
Answers
Glacial deposits and fossils of incient polar plants are currently found near the equator because the Earth's climate has changed significantly over time.
polar plants are currently found near the equator because the Earth's climate has changed significantly over time. polar plants are currently found near the equator because the Earth's climate has changed significantly over time. polar plants are currently found near the equator because the Earth's climate has changed significantly over time. polar
during the Ice Ages, glaciers covered much of the Earth's surface, including areas near the equator. As the climate warmed, the glaciers retreated, leaving behind glacial deposits. Similarly, the fossils of ancient polar plants found near the equator are evidence of the Earth's changing climate. These plants once thrived in colder, polar regions, but as the Earth's climate changed, these regions became warmer, and the plants died out. The fossils of these ancient polar plants were preserved in the Earth's crust and are now found near the equator.
Read more about fossils of ancient here:https://brainly.com/question/7112506
#SPJ11
In the area illustrated, what process is evident over time?
Answers
In the area illustrated in the image attached, the biological process which is evident over time is: ecological succession.
Ecology can be defined as the scientific study of the relationship existing between living organisms such as plants and animals with respect to their physical and biological environment (abiotic factor).
In Ecology, ecological succession refers to a process through which the structure of an ecological (biological) community evolves or changes over time.
Generally, there are three (3) main types of ecological succession and these include:
Primary successionSecondary successionCyclic successionFrom the ecological (biological) community illustrated in the image attached, we can deduce that there is an evolution (change) in the species of plants growing over time. This ranges from weeds during the first visit to pine and oak trees during the seventh visit.
Read more on ecological succession here: https://brainly.com/question/5187022
Catabolic pathways that break down complex substances into more usable units are usually regulated by the
Answers
Catabolic pathways are essential for the breakdown of complex molecules into simpler, more usable units. These pathways are typically regulated by various enzymes, hormones, and other molecules, which ensure that the process is well-coordinated and efficient.
For example, catabolic pathways that break down proteins may be regulated by proteases, which break down proteins into smaller peptides and amino acids. Hormones such as insulin and glucagon can also regulate catabolic pathways, helping to control the breakdown of glucose into energy.
Other hormones, such as epinephrine and cortisol, can increase the rate of catabolic processes, allowing cells to quickly access energy during periods of stress or physical activity.
know more about Catabolic pathways here
https://brainly.com/question/29343424#
#SPJ11
Create a cool name for this fish
Answers
Answer:
exotic zebra-hammerhead
Explanation:
not sure just looks like a combination of both :')
Which function of the skeletal system is described as providing shape and support to the body?
Answers
Answer:
The skeleton has six main functions: Support – the skeleton keeps the body upright and provides a framework for muscle and tissue attachment. Posture – the skeleton gives the correct shape to our body.
Explanation:
Answer:
a.) framework
The images show fossils of a modern bird and two extinct organisms (a Tyrannosaurus rex and an Archaeopteryx). Based on the structure of the three organisms, it can be concluded that
. The Archaeopteryx and bird have wings, while dinosaurs have limbs. So, it can be concluded that
.
Answers
Answer: They have a common ancestor
Explanation:
If they have homologous structures then it is very likely that they evolved from a common ancestor.
Science
Recom
Seventh grade > Q.4 Genetic variation in sexual reproduction JSA
Which of the following statements are true about sexual reproduction? Select all that apply.
Organisms that have the same phenotype for a trait could have different
genotypes for the gene that controls that trait.
When mammals mate and produce offspring, each parent passes down all
of its alleles to each of its offspring.
Two siblings can have different phenotypes for some traits because each
sibling may inherit different alleles from the parents.
Some of an offspring's traits are different from the traits of either of its
parents because the offspring inherits alleles from both parents.
Submit
9
A
Answers
Genetic features can be influenced by a person's environment, including sickness and disease, radiation, food, and other things.
The dna and genes from one's parents can also be used to determine genetic features, but these qualities can also evolve with time.
What is Genetic variation ?The difference in DNA between individuals or communities is known as genetic variation. Mutation and genetic recombination are two of the many processes that cause genetic variation. Genetic variety is primarily caused by mutations, although it is also influenced by other processes including genetic drift.
What is Sexual reproduction ?A gamete with a single set of chromosomes joins with another gamete to create a zygote, which then grows into an organism made up of cells with two sets of chromosomes. Sexual reproduction is a type of reproduction that requires a complex life cycle.
To know more about Genetic variation please click here : https://brainly.com/question/14926046
#SPJ13
Targe
1.
The independent variable is
and the dependent variable is
in an experiment.
changed, observed
d 07/01
ce
kept the same, observed
d 07/01
observed, changed
07/01
hypothesized, changed
ursday
Answers
Dependent variable: the effect that depends on the independent variable.
For example, an experiment measures how light (independent variable) affects plant growth (dependent variable). Every other component of plant growth is kept the same to isolate the effect the independent variable has on the dependent variable.
So, the independent variable is CHANGED while the dependent variable is OBSERVED
Methane and oxygen react to form carbon dioxide and water. the reaction speed can be increased by: A.
decreasing the concentration of water.
B.
decreasing the concentration of methane.
C.
increasing the concentration of carbon dioxide.
D.
increasing the concentration of oxygen.
Answers
Answer:
c, got it right on study island
Explanation:
The speed of reaction can be increased by increasing the concentration of reactants such as oxygen or methane.
What do you mean by a Chemical reaction?A chemical reaction may be defined as a process that leads to the transformation of one chemical substance into another.
It is thought that the rate of reaction depends on the initial concentration of the reactants. Hence, increasing the reactant's initial concentration will definitely increase the speed of reaction.
Therefore, the correct option for this question is D.
To learn more about Chemical reactions, refer to the link:
https://brainly.com/question/11231920
#SPJ2
Further research proves that these _______ mutations in both ilp alleles are the reason why lp is always active and, consequently, induces the leukemic cells to constantly undergo cell division.
Answers
Further research demonstrates that these "Loss of Function" mutations in both ILP alleles are the reason why LP is always active and, as a result, causes leukemic cells to constantly divide.
What is a mutation?A mutation is a change in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes can be constructed from either DNA or RNA.
Harmful mutations can lead to genetic diseases or cancer. A genetic condition is a disease caused by a mutation in one or more genes. A human example is a cystic fibrosis. A single gene mutation causes the body to produce thick, sticky mucus, which clogs the lungs and blocks digestive ducts.
To learn more about mutation visit;
brainly.com/question/13923224
#SPJ4
students have been studying cellular respiration in their biology class and are working on a computer simulation that allows them to test the effects of several variables on the products of respiration. in one simulation, they are asked to change the initial concentrations of several gases, one at a time, to see the impact on atp production in a muscle cell. if the students begin by removing oxygen from the muscle cell, what should they predict will occur? responses the cell will produce more atp because oxygen inhibits atp production in the mitochondria. the cell will produce more atp because oxygen inhibits atp production in the mitochondria. the cell will produce no atp at all since oxygen is critical to atp production. the cell will produce no atp at all since oxygen is critical to atp production. the cell will produce the same amount of atp since oxygen is not a factor in atp production. the cell will produce the same amount of atp since oxygen is not a factor in atp production. the cell will produce some atp but in much lower amounts than if oxygen was present.
Answers
Osmosis is a form of passive transport. Which defines osmosis?
(1 point)
•
the movement of water across a semipermeable membrane up a concentration a
gradient from low to high, using no energy
•
the movement of water across a semipermeable membrane up a concentration
gradient from low to high, using energy
•
the movement of water across a semipermeable membrane down a concentration
gradient from high to low, using no energy
the movement of water across a semipermeable membrane a down a concentration
gradient from high to low, using energy
Answers
Answer:
I believe the answer is c
Explanation:
because if you think about the experiment on an egg, it turns clear and jelly-like. there is lots of concentration in the egg and it goes through the egg cell wall thing and it just naturally happens without using energy.
yeah, I studied this last year haha...
Hope this helps!
How are water scarcity and water pollution related?
Water pollution is a solution to water scarcity.
Water scarcity contributes to water pollution.
Water pollution contributes to water scarcity.
Water scarcity is a solution to water pollution.
Answers
Explanation: One of the largest causes of water scarcity across the world is pollution. ... Pesticides and other fertilizer use by farmers can also lead to water pollution if the chemicals seep into the groundwater or in underground aquifers. The misuse of water resources is another massive issue that leads to water scarcity.
What are three products of cellular respiration?
Answers
Answer:
Cellular respiration is this process in which oxygen and glucose are used to create ATP, carbon dioxide, and water. ATP, carbon dioxide, and water are all products of this process because they are what is created.
Explanation:
Compartmentalization allows cells to establish physical boundaries for biological processes that enables the cell to carry out different metabolic activities at the same time. Researchers have found that the cytoplasm has a pH of 7.6 while the pH of the intermembrane space (IMS) of the mitochondria is 6.9. What conclusion can you draw from this information
Answers
The difference in pH between the cytoplasm and the intermembrane space of the mitochondria indicates that compartmentalization is occurring in the cell.
Compartmentalization is the process of establishing physical boundaries within a cell to keep different biochemical processes separate. This allows the cell to carry out different metabolic activities at the same time and in different environments. T
he acidic pH of the IMS compared to the neutral pH of the cytoplasm suggests that compartmentalization is occurring and that different processes are occurring in these two distinct spaces. The acidic pH in the IMS could be ideal for some biochemical reactions while the neutral pH in the cytoplasm could be ideal for other reactions.
Therefore, this difference in pH confirms that compartmentalization is occurring and allows the cell to perform multiple biochemical processes simultaneously.
To learn more about mitochondria visit:
https://brainly.com/question/14740753
#SPJ4
what characteristics are affected by genetics?
Answers
Answer:
Well.
Explanation:
1. Weight
2. Height
3. Chronic Diseases
4. Skin color
5. Eye color
6. Race
7. Hair color
8. And the overall shape of your whole body (ie, head shape)
Answer:
The characteristics that are impacted by genetics are :
-The eye color
-The nose shape
-Hair color
-Face shape
-Skin color
-And any type of beauty mark someone has
What is the relationship between the number of wolves and the number
of deer?
Answers
Answer:
if the number of wolves increase the number of deer decrease
Explanation:
because deers are prey and wolves are predators
Wolves and deer show a prey-predator relationship. This indicates that as the number of wolves increases, the number of deer decreases and if the number of deer increases it means that the number of wolves has been decreased.
What is Prey-predator relationship?Prey-predator relationship is a type of association seen in the environment. In this relationship, one species feeds upon the other species. The prey species is the animal being fed on, and the predator is the animal who feeds. The predator prey relationship develops over time.
As the prey population increases, there is more food for the predators. So, after a small time, the predator population increases as well. This number keeps on increasing till sufficient food is available. As the number of predators keeps on increasing, more prey are captured. This results in the decrease in prey population.
The relationship between the wolf and its prey, deer is very complex. Wolves population keep deer moving, which provides an ecological benefit for the health of the deer and plant species which are damaged from over-browsing. This keeps the number of species constant.
Learn more about predation here:
https://brainly.com/question/1778577
#SPJ2
Hii I need this now I’ll give u brainliest
How does changing air pressure in earths atmosphere affect other things on earth such as weather?
Answers
Find the weight of a pine tree that has a circumference of 14 inches and a height of 120 feet. Use the equation: W = b0 + b1(D2H)
Answers
Answer:
The answer is below
Explanation:
The weight of trees is calculated using the equation:
\(W=b_o+b_1(D^2H)\)
Where W is the weight in tons, \(b_o \ and\ b_1\) are constants , D is the diameter of the tree in inches and H s]is the height of the tree in feet.
The circumference = 14 inches. But circumference = 2πr, where r is the radius and π = 22/7. Therefore:
14 = 2(22/7)× r
14 = (44/7)×r
r= 14 × 7 / 44 = 2.23 inches
Diameter = 2r = 4.45 inches
\(W=b_o+b_1(4.45^2*120)\\W = b_o+2381b_1\\Let\ us\ assume\ b_o = -34.671,b_1=1.859.\\Therefore\\W = -34.671+2381(1.859)\\W=4392 \ tons\)
Which microfossils are useful for paleotemperature determination
using the oxygen isotope ratios of their shells?
Answers
The microfossils that are useful for paleotemperature determination using the oxygen isotope ratios of their shells are foraminifera.
Foraminifera are tiny marine animals that have been living for millions of years. Their shells are made up of calcium carbonate and are well-preserved in sediments. The shells of these microorganisms are widely used in paleoceanography to determine past climatic conditions. Paleoceanography is the study of the history of the oceans in the geological past using sediments and fossils. It helps us to understand how the oceans and climate have changed over time.
Paleotemperature is the measure of the temperature that existed in past geological ages. The temperature is determined by various means, including studying the growth rings of trees, ice cores, and microfossils, and others. Microfossils are microscopic fossils that are found in rocks and sediments that help in reconstructing past environmental and climatic conditions.
Oxygen isotope ratio is the measure of the relative abundance of oxygen isotopes 18O and 16O in a sample. The ratio of the two isotopes changes as a result of temperature changes. The ratio is used to reconstruct past temperature changes.
To know more about microfossils visit:
https://brainly.com/question/30840647
#SPJ11
Determine the
phenotype based on
the given genotypes.
Answers
Answer:
theres no image
Explanation:
think of something that would make your life easier, anything from an automatic toothpaste dispenser to an awning that opens up when it senses rain, and imagine how you could actually create it. do you agree with massimo that the arduino makes microcontrollers and coding available to anyone, regardless of experience?
Answers
Yes, I agree with Massimo that Arduino makes microcontrollers and coding available to anyone, regardless of experience. Arduino is an open-source electronics platform that provides a user-friendly environment for creating and programming interactive projects.
It simplifies the process of hardware prototyping and allows individuals with little to no prior experience in electronics or programming to dive into the world of microcontrollers.
To create a helpful device like an automatic toothpaste dispenser, Arduino can be a valuable tool.
With Arduino, you can connect sensors, actuators, and other components to build a system that detects the presence of a toothbrush and dispenses an appropriate amount of toothpaste automatically.
Arduino's extensive library of pre-built functions and the availability of countless tutorials and examples online make it easier for beginners to understand and implement such projects.
Arduino's simplicity and versatility have contributed to its popularity among hobbyists, students, and professionals alike. It has democratized access to microcontroller technology and coding by providing an accessible platform that encourages creativity and innovation.
Whether it's creating automated home systems, robotics, or interactive artworks, Arduino opens up possibilities for individuals from diverse backgrounds to turn their ideas into reality.
To know more about "Microcontrollers" refer here:
https://brainly.com/question/31856333#
#SPJ11
A gastroenterologist is a doctor who treats problems of the esophagus, stomach, and intestines. Which organ system is cared for by this type of doctor?.
Answers
Digestive system is cared for by Gastroenterologist.
What organs are the focus of gastroenterologists?The digestive system includes the gastrointestinal tract (esophagus, stomach, small intestine, large intestine, rectum, and anus), as well as the pancreas, liver, bile ducts, and gallbladder. A gastroenterologist is a specialist with knowledge of the disorders and diseases that affect the digestive system.
Who uses the digestive system to treat illnesses?The liver, pancreas, and small intestine can all be transplanted. Numerous medical professionals can aid in the diagnosis and treatment of digestive issues. A physician specialist with further training in the diagnosis and management of digestive diseases is known as a gastroenterologist.
What are the symptoms of Gastrologist?These are the some symptoms of Gastroenterology disease:
Abdominal pain and discomfort.Bleeding in the digestive tract.Constipation and Diarrhoea.Difficulty Swallowing.Severe and persistent Heartburn/indigestion.Stomach upset, nausea, vomiting.Ulcers.Unexplained weight loss.What types of conditions do Gastroenterologists treat?It covers both common and significant diseases such hepatitis, gastroesophageal reflux disease (heartburn), peptic ulcer disease, colitis, gallbladder and biliary tract disease, nutritional issues, irritable bowel syndrome (IBS), and pancreatitis.
To know more about gastroenterologist, visit:https://brainly.com/question/1910223
#SPJ4