Answer:b
Explanation:
16. Which organelle may have allowed early eukaryotes to make food and produce oxygen? (a) the Golgi apparatus (b) the central vacuole (c) the plastids
Answer:
the plastids
Explanation:
Answer:
The plastids are the organelles that compose the cells of plants and algae. These contain chloroplasts, which allow them to capture energy from sunlight. If they are ever removed, these cells will eventually lose their ability to photosynthesize food without help from another organism - they have lost an essential organelle. Without the presence of this organelle, eukaryotes may not have been able to use sunlight as a mechanism for producing oxygen or making nutrients such as glucose available for consumption.
The organelle that may have allowed early eukaryotes to make food and produce oxygen is the plastid. The correct option is c.
What is plastid?The organelles that make up the cells of plants and algae are called plastids. These have chloroplasts, which enable them to absorb solar energy. These frequently include several kinds of pigments that can alter the color of the cell as well as pigments that are employed in photosynthesis.
These cells will eventually lose their capacity to photosynthesize food without the assistance of another creature if they are ever taken out since they have lost an important organelle.
Eukaryotes might not have been able to exploit sunlight to produce oxygen or make nutrients like glucose available for consumption without the presence of this organelle.
Therefore, the correct option is (c) the plastids.
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PLEASE HELP!
A. What kind of weather is associated with a low-pressure area?
B. What happens to the air of the low pressure areas that leads to this type of weather?
Answer:
A.) Low-pressure systems are usually associated with clouds and precipitation that minimize temperature changes throughout the day
B.) The slightly inward moving air in low pressure causes air to converge and since it can’t move downward because of the surface, the air is forced upward, leading to condensation and precipitation
Explanation:
List in order what an athlete does when she bl00d d0pes.
1. She chills the bl00d and stores it.
2. She puts the bl00d back into her body just before a competition.
3. She removes the bl00d from her body.
4. What are the four components of the Earth system?
Lithosphere (land), hydrosphere (water), biosphere (living things), and atmosphere (air)
in gel electrophoresis, a loading dye is usually added to the sample of dna to be loaded in the wells of the gel. why would this be important?
Answer:
Gel loading dye is typically made at 6X concentration (0.25% bromphenol blue, 0.25% xylene cyanol, 30% glycerol). Loading dye helps to track how far your DNA sample has traveled, and also allows the sample to sink into the gel. ... It is important to use the same running buffer as the one used to prepare the gel.
The human brain communicates with the rest of the body through networks of what?
Through nerves attached to the brain and to the spinal cord. When an action potential traveling down the axon reaches a terminal button, they secrete a chemical called a neurotransmitter.
The brain communicates with the rest of the body through the spinal cord, which runs from the base of the brain all the way down the back. The spinal cord is made up of lots of nerves, and these nerves branch out into more nerves that travel to every part of the body.
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What are the missing coefficients for the skeleton equation below? N2+ H2-->
NH3
(A)3,1,2 (B)1,3,3 (C)1,3,2 (D)1,1,2 (E)2,6,6
What differences are there in the growth of the human population compared to the animal/plant population?
Answer:
Explanation:
In both plants and animals, there are parts of the body designed to carry the nutrients needed for growth. In a animal it is blood and in a plant, it is the Xylem and Phloem Tissue Humans are born with a set number of limbs and if one get's cut off it cannot regenerate. Because of this, we are increasingly cutting into resources that other species must use in order to survive. We have hindered, or even ended the lives, of numerous species. Today, 99% of the species still remaining on this planet are at risk because of human activity alone.The similarities in the population growth of humans with respect to plants and animals is that, in the three cases, the growth occurs exponentially with respect to the initial number of specimens
the right lung has ________ lobes, and the left lung has ________ lobes.
Answer:
3,2
Explanation:
Explain why contractile vacuoles would be of little value to one-celled organisms living in the ocean (salt water)
The organisms living in an aquatic environment have to undergo osmoregulation and survive in a hypotonic environment. The organisms such as paramecium, protists, and unicellular algae have contractile vacuoles.
The functions of the contractile vacuoles include:
1. Contractile vacuoles help in the osmoregulation, such that the movement of solute particles inside and outside of the cells.
2. The contractile vacuoles are also required to remove excess water from the organisms.
3. The vacuoles contract to discharge the fluid for the survival of organisms like paramecium and algae.
Thus, the contractile vacuoles contract to allow the organisms to survive in a hypotonic environment.
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what is the effect of telomere caps on cancer cells?
The telomere caps help to maintain genome integrity. In consequence, these repetitive sequences are fundamental to avoid the generation of cancer cells.
Cancer cells are a type of cells that proliferates in an uncontrolled manner, which is generally associated with mutations in the genome capable of altering normal gene expression patterns.
Telomere caps are repeated nucleotide sequences found at the end of chromosomes, which help to maintain genome integrity.
The elimination of these repetitive sequences (telomere caps) due to successive cell divisions triggers chromosomal (genome) instability and thus contributes to the emergence of genomic rearrangements that may lead to carcinogenesis.
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Cryptosporidium parvum (C. parvum) is a single-celled, eukaryotic parasite that infects human cells in the digestive system and causes illness.
a. True
b. False
The statement 'C. parvum is a single-celled, eukaryotic parasite that infects human cells in the digestive system and causes illness' is TRUE. This parasite causes diarrhea.
Cryptosporidium parvum (C. parvum) is a single-cell protozoan that may cause severe self-limited diarrhea in immunocompetent individuals.
Cryptosporidium parvum develops its complete life cycle in the human intestines (also it can be found in animal intestines).
This species (Cryptosporidium parvum) is one of the six (6) known species of Cryptosporidium.
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Which type of animal have thick skin and long Eyelashes?
Answer:
Camel
Explanation:
ANYONE FROM K12 KNOW THE ANSWERS TO THIS PART OF THE 3.25 MITOSIS LAB??? I NEED HELP (no links)
Answer:
1. provide the correct order for the stages of mitosis
Which of the following is the BEST description of osmosis?
A.) as active transport
B.) as requiring a transport protein
C.) as an example of facilitated diffusion
D.) as diffusion of water through a selectively permeable membrane
Answer:
D
Explanation:
Osmosis is the diffusion of water through a selectively permeable membrane.
Once overweight, Brenna's mother has started to lose weight as she's aged. At first, Brenna was happy to see this because she thought it may help her mother bounce back from future injuries. On the contrary, Brenna has started to notice that her mother is having more difficulty with walking and climbing stairs. Her doctor explains that this declining function is common in adults age 65 and older. What term describes the muscle wasting Brenna's mother is experiencing?
a. sarcopenia
b. aphasia
c. kyphosis
d. xrostomia
The term that describes the muscle wasting Brenna's mother is experiencing is sarcopenia. That is option A.
An overweight individual is an individual whose body mass index is between 25 to less than 30.
Body mass index is calculated based on the weight and height of an individual.
An Brenna's mother advances in age, she begins to experience lost of muscle mass.
This is because of the following:
decline in hormones and numbers of neuromuscular junctions, increased inflammation, declines in activity, and inadequate nutrition.This will in turn lead to difficulty with walking and climbing stairs.
Therefore, the term that describes the muscle wasting Brenna's mother is experiencing is sarcopenia
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The principle that we encode information together with its context is known as encoding a. transcription. b. priming. c. consolidation. d. specificity.
freshwater fish excrete nitrogenous wastes as _____.
_______and mucous work to trap dirt and germs
before we inhale.
Answer:
Cilia
Explanation:
A) What structures form the male part of the flower
B) What structures form the female part of a flower
C) how do male gametes find female gametes in a flower ?describe with de
Answer:
a - The androecium
b - the pistil
c - Male gametes is the pollen and it find the female gamete by wind, pollenators, and water.
Explanation:
PLLLSSS HELP ME I WILL GIVE BRAINIEST
in the Fall of the year, leaves appear red, orange, yellow and brown because the chlorphyll decreases in the leaves and allows the --(blank)-- pigments to reflect mostly colors other than green.
possible answers than can go in the blank are primary or accessory
The appropriate word to fill into the blank would be accessory.
In the Fall of the year, leaves appear red, orange, yellow, and brown because the chlorophyll decreases in the leaves and allows the accessory pigments to reflect mostly colors other than green.
The core pigment in leaves that makes them appear green is chlorophyll. The pigment is primarily responsible for absorbing light energy to drive the photosynthetic process in plants.
Some other pigments, also known as accessory pigments such as carotenoids, anthocyanins, xanthophylls, etc., help out chlorophyll in some ways but have colours that are different from green.
Thus, the appearance of other colours such as orange, yellow, brown, etc., on leaves is due to a decrease in chlorophyll and the reflection of the colours of the accessory pigments.
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Which is true about water molecules?
A. Water molecules are nonpolar, meaning their charges balance each other out.
B. Water molecules are polar, meaning they have a net partial negative charge.
C. Water molecules are polar, meaning they have partial negative and positive
charges.
D. Water molecules are nonpolar, meaning they do not interact with each other.
Answer: C
Explanation: Water is a polar molecule because the electrons of the hydrogen atoms get "pulled" towards the electrons of the oxygen atom. Which is both positive and negative on opposite ends.
It could be B as well but, I believe it's C
the cranial nerve that has three major branches is the
Answer:
trigeminalSource:
Mastering A and P Week 13 Assignment 1 - QuizletThe primary electron acceptor in photosystem II is __________. Group of answer choices P700 P700 P680 P680
Answer:
680
Explanation:
When the P680 special pair of photosystem II absorbs energy, it enters an excited (high-energy) state. Excited P680 is a good electron donor and can transfer its excited electron to the primary electron acceptor, pheophytin.
When exponential growth is graphed, the trend line created looks like what letter of the alphabet?
help please
Answer:
letter J
Explanation:
The line creates a shape like the letter J and is sometimes called a J-curve. The symbols in this equation represent concepts. Here's how to translate the equation into words: The change (d) in number of individuals (N) over a change (d) in time (t) equals the rate of increase (r) in number of individuals (N).
The nitrogenous base adenice is found in all the members of which group
Answer:
ATP, RNA, NAD and DNA.
Explanation:
A nitrogenous base; it is an organic molecule containing a nitrogen, carbon and other atoms that has the chemical properties of a base that is why they are called as bases. The nitrogenous bases are; i) adenine, ii) guanine, iii) thymine, iv) uracil and v)cytosine.
Adenine is a nitrogenous base which is found in ATP, RNA. NAD, FAD and DNA. adenine pairs with thymine in DNA synthesis.
Even though human proteins are made from only 20 different amino acids, there are thousands of differen proteins found in human cells. What allows for so much variation in the proteins?
Answer:
Amino acids are the basic building blocks of proteins, and they serve as the nitrogenous backbones for compounds like neurotransmitters and hormones. In chemistry, an amino acid is an organic compound that contains both an amino (-NH2) and carboxylic acid (-COOH) functional group, hence the name amino acid. Proteins are long chains or polymers of a specific type of amino acid known as an alpha-amino acid. Alpha-amino acids are unique because the amino and carboxylic acid functional groups are separated by only one carbon atom, which is usually a chiral carbon. In this article, we will solely focus on the alpha-amino acids that make up proteins
Explanation:
I hope i helped
When salt water i added to a plant cell why does the cell membrane srink
If a higher concentration of salt is placed outside of the cell membrane, the water will leave the cell to bond with it. The loss of water from this movement causes plant cells to shrink and wilt.
Asexual reproduction __________. View Available Hint(s)for Part A produces offspring genetically identical to the parent requires both meiosis and mitosis leads to a loss of genetic material is limited to plants is limited to single-cell organisms
Answer:
produces offspring genetically identical to the parent
Explanation:
Energy from the sun , carbon dioxide from the atmosphere and water absorbed by the roots react to produce?
Answer:
What's your question?
Maybe Your talking about Photosynthesis
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.