CHAPTER ONE THE CHEMICAL COMPONENTS OF THE CELL Biology Form Three Student Book
1. What is the percentage by mass of oxygen, carbon, hydrogen, nitrogen,
phosphorus and sulfur in the earth and in the human body? What do you
observe?
(MB
2. Which elements have a higher percentage in the nature and in the human
body? State some compounds that contain these elements in their struc-
ture.
3. Many chemical substances enter the structure of the of the cell. In your
opinion, what is the importance of these substances? Why have you select-
ed these substances?
4. There are other elements that exist in a fewer percentage, search these
elements and state the percentage abundance of each in the cells of living
organisms.
how do oomycetes feed
Would would be the possible gamete combinations?
Answer:
1/4 WR; 1/4 wr; 1/4 wR; 1/4 Wr
Explanation:
The principle of independent assortment indicates how different genes independently separate from one another when gametic (reproductive) cells develop. When a cell divides by meiosis, homologous chromosomes are randomly distributed to daughter cells, thereby different chromosomes segregate independently of each other. In consequence, each gamete has a unique combination of chromosomes. In this case, the two genes are on different homologous chromosomes, thereby gene variants (alleles) will be randomly distributed to daughter cells during meiosis (anaphase I) and thus the expected proportion of gamete genotypes will be 1/4 WR, 1/4 wr, 1/4 wR, 1/4 Wr.
Which kind of evidence is used by scientists to understand the intermediate states between an ancestral form and that of its
descendants?
A) causation
B) correlation
C) natural selection
D) transitional fossils
The intermediate states between an ancestral form and that of its
descendants are transitional fossils.
What is a transitional fossil?
Transitional fossils are remains of an organism that came in between a known version of a species and the current species.
Transitional fossils would be proof of evolution because they would show medium forms of a species and they altered and accumulated adaptations at a slow pace.
Thus, option "D" transitional fossils are correct.
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which statement regarding these methods of reproduction is correct?
Answer:
put the picture of the question
Explanation:
i cant help you if you dont
The sun produces energy from matter in its core through the process of
Answer:
The sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. Hydrogen nuclei fuse to form one helium atom.
Answer:
nuclear fusion ...........
The enzyme tryptophan synthetase is produced sizes, large and small. Some mutants with no enz tivity produced exactly the same size enzymes as the wild type. Other mutants with no activity produced its the large enzyme; still others, just the small enzyme.
a. Explain the different types of mutants at the level of protein structure.
b. Why do you think there were no mutants that produced no enzyme?
Answer:
Due to changes occur in the protein structure.
Explanation:
The different types of mutants produced at the level of protein structure because mutation changes the protein structure of organism which leads to different types of mutant organisms. There were no mutants that produced no enzyme because enzymes are the most important part of the body in order to help the organism in their survival. These enzymes speed up the process of chemical reaction.
Living organisms are commonly divided into six kingdoms: archaea, bacteria, fungi, protists,
plants, and animals. What’s the biggest problem with classifying organisms in this way?
they may be in the same category but they don't have the same biological makeup
The biggest problem in classifying organisms this way is that the way is not well-defined and diverse and if any organism doesn't fall into another kingdom that is added to these kingdoms.
What is classification?Organisms are classified into groups and classes on the basis of their characters and structure. It helps in identifying and understanding the diversity of living organisms.
The six kingdom classification is based on similar characteristics like cell type, and food. Before this, scientists divide the organism into plants and animals.
Thus, The major issue with this system of classifying creatures is that it is not well-defined and diverse, and if an organism does not fit into one of the existing kingdoms, it is added to those already there.
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(20 POINTS!!) please help fast!!
Answer:
A. Metamorphic
B. Igneous
C. Sedimentary
Explanation:
True or False:
Variation is key to life on the planet, but while it benefits the group, it doesn't benefit every individual IN the group.
Answer:
I believe the awnser is true. ((I'm not completely sure))
Can someone please do this for me I will
Litteraly Venmo anyone to do this whole assignment for me
PLEASE HELP ASAP FOR 25 POINTS!! :D
6 Identify) What particle increases in number when a base is dissolved in water?
A: OH–
B: H3O+
C: H2O
D: H'
Answer: A: OH-
Explanation:
Bases are substances that increase the concentration of OH- ions in water when they dissolve in it.
The food components gradually gets digested as food travels through the various components of alimentary canal. The digested food can pass into the blood vessels in the walls of the small intestine. The digestive system consists ofSingle choice.
(a) Digestive tract
(b) Digestive tract and liver
(c)Digestive tract and pancreas
(d) Digestive tract and the associated glands
pls answer
Answer:
(b) Digestive tract and liver
Explanation:
The digestive system consists of the digestive tract and liver. The digestive tract is made up of a large number of parts. These parts include the esophagus, stomach, intestines, rectum, etc. Food enters the mouth and travels down the digestive tract and out passing the rectum. The liver is where the blood passes through and it is responsible for many functions such as the metabolizing of fats and proteins, separating and storing vitamins and minerals, regulating different chemicals found in the blood, etc.
which direction do new york state weather systems usually approach from
Answer:
west to east
Explanation:
The weather system of New York moves in the west to east direction. It is driven by the jet stream which moves from west to east.
The jet stream is nothing but the normal trade winds that blows in and around the equator and move from west to east. While very strong wind forces start blowing from east to west due to the tropical trade winds
It is well known that sugars glucose and fructose are the primary fermentable substrates. However, malic acid can also be fermented but to lactic acid rather than ethanol. This is especially important in red wine, why?
Answer:
The correct answer is - due to the different bacteria that produce a different enzyme that is involved in the fermentation of malic acid.
Explanation:
In red wine production, malic acid in present in grapes converted to a softer lactic acid. This process is known as malolactic fermentation. It takes place due to the presence of different types of bacterias such as bacteria of the lactic acid family.
These bacterias produce enzymes which is used to convert the malic acid to lactic acid such a process can occur naturally also.
Explain the role of PERISTALSIS during your food’s time in the esophagus as it travels to the stomach.
Peristalsis helps in storing food, breaking down food down and mixing it with juices secreted by stomach lining. Peristalsis in stomach helps in partial digestion of food called chyme.
Plz do 3,2❤️ Plzzzzz urgent
Answer:
2)A Dutch father-son team named Hans and Zacharias Janssen invented the first so-called compound microscope in the late 16th century when they discovered that, if they put a lens at the top and bottom of a tube and looked through it, objects on the other end became magnified.
3)While observing cork through his microscope, Hooke saw tiny boxlike cavities, which he illustrated and described as cells. He had discovered plant cells! Hooke's discovery led to the understanding of cells as the smallest units of life—the foundation of cell theory.
Hey can someone help me with this i don’t understand it?
help..........................
Answer:
d
Explanation:
Construct an explanation to predict the type of symbiotic relationship that exists between the hippo and oxpecker birds?
A 10 N force and a 15 N force are acting on a box in opposite directions what edition force must be added to produce equilibrium
Answer:
5N of force acting the same way as the 10N of force to make it 15N of force
Explanation:
Identifying Star Systems:
Which type of star system is pictured?
✔ open cluster
Answer:
hope it helps
Explanation:
geqgrqgtsnydms v FyhgvCgxvnhh nghllkk wa
Answer:
open cluster
Explanation:
Just try it.
You'll see.
Which RNA base pairs with the adenine in DNA?
Thymine
guanine
cytosine
uracil
Answer:
uracil
Explain: it pairs up with the dna
Which of the following is formed last in daughter cells when plant cells divide?
The nucleus
The nuclear envelope
The cell membrane
The cell wall
Answer:
The cell wall is formed last
Answer:
the nucleus is the last thing formed
Plz do 6 and 9❤️❤️❤️❤️❤️ Plz
Answer:
no
Explanation:
evidence of evolution on comparative embryology
Answer:
Scientists have used comparative embryology to study and gather evidence of evolution. Karl Ernst von Baer, a Russian scientist, made observations on embryos of different species and came up with four principles of comparative embryology: 1. General features of an embryo appear before specialized features.
Explanation:
Write each label into the appropriate category to designate whether the given item describes elements of gray or white matter of spinal cord.
Contains myelinated axons
Posterior column
Located to the periphery of the spinal cord
Gracile fasciculus
Anterior spinocerebellar tract
Medial vestibulospinal tract
Marked by low myelination White matter
Functions to integrate arriving electrical signals
Contains somas, synapses, and dendrites
Tectospinal tract
Functions to transmit electrical signals rapidly over long distances
Lateral horn
Ventral horn
Gray matter White matter
Answer:
- Contains myelinated axons: White matter
- Posterior column: White matter
- Located to the periphery of the spinal cord: White matter
- Gracile fasciculus: White matter
- Anterior spinocerebellar tract: White matter
- Medial vestibulospinal tract: White matter
- Marked by low myelination: Gray matter
- Functions to integrate arriving electrical signals: Gray matter
- Contains somas, synapses, and dendrites: Gray matter
- Tectospinal tract: White matter
- Functions to transmit electrical signals rapidly over long distances: White matter
- Lateral horn: Gray matter
- Ventral horn: Gray matter
Explanation:
Both the brain and the spinal cord contain white matter and gray matter. White matter is the tissue responsible for information transmission (i.e., axons); whereas gray matter is mostly involved in information processing (i.e., neuron bodies). White matter is composed of myelinated axons which extend out from the neuron bodies and glial cells, and this tissue connects different areas of the cerebral cortex (i.e., the outer layer of the brain). Moreover, gray matter is composed of neuronal cell bodies or 'soma' that contain the neuron’s nucleus and unmyelinated axons. Gray matter also has glial cells and capillary blood vessels; whereas white matter also has oligodendrocytes that produce myelin and astrocytes. The color of the white matter is caused by the myelin that surrounds the axons; while the color of the gray matter is due to the capillary blood vessels and neuronal cell bodies. In the cerebrum and cerebellum, white matter is observed in deep areas coated by gray matter; whereas, in the spinal cord, the white matter surrounds the central gray matter. White matter is involved in normal motor and sensory function, this tissue is responsible for learning and coordinating communication between different brain regions. Moreover, grey matter is involved in muscle control and sensory function (e.g., hearing, vision, memory, emotions, speech, decision making, etc).
When a bat is hibernating, how fast does its heart pump?
Answer:
20 beats per minute
Explanation:
Answer:20 beats
Explanation:bat's heart rate slows to only 20 heartbeats per minute.
State your claim. Make sure your claim fully explains how infrared photography can be used to visualize temperature differences
Answer:
Infrared thermography using an infrared camera is the most popular technique for detecting surface temperature without contact. ... Passive thermography measures relevant temperature differences of the surface by heating it with lamps (heat sources).
please help ill give brainliest :)) At the equator, the earth spins a distance of 26,120 miles every day. At what speed does the Earth spin in mph?
Answer:
1088 mph
Explanation:
26120/24 = 1088.333 ≈ 1088
Answer:
1088.333mph
Explanation:
26,120miles ÷ 24hours = 1088.333mph
