What did
van Helmont, Priestley, and
Ingenhousz discover about
plants
Answer: Van Helmont discovered that water was involved in increasing the mass of a plant. Priestley discovered that a plant produces the substance in air required for burning. Ingenhousz discovered that light is necessary for plants to produce oxygen.
Explanation:
What did scientists believe was contributing to the depletion of the ozone layer and why?
CFCs and other halogen-source chemicals in the stratosphere were discovered to deplete the ozone layer.
What is ozone layer depletion?
Ozone depletion is the steady lowering of the Earth's ozone layer in the high atmosphere, which is produced by the discharge of chemical compounds from industry and other human activities that contain gaseous chlorine or bromine.
The ozone layer acts as a buffer against the sun's potentially dangerous ultraviolet rays. The destruction of the ozone layer puts humans in direct contact with dangerous ultraviolet rays, which can lead to a variety of health problems including cancer, cataracts, skin illnesses, and a weakened immune system.
Learn more about ozone depletion, here:
https://brainly.com/question/11318086
#SPJ2
Please please help!
Answer:
should be 4
Explanation:
plants cant do photosynthesis without sunlight
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh-positive is a trait that shows simple dominance over Rh-negative. Which of the following is a possible phenotype for the father?
A) A negative
B) O negative
C) B positive
D) AB negative
Answer:
The correct answer is - C) B positive
Explanation:
In the given question is the man has B positive blood group with two offspring a girl with type O positive and a son who is type B negative. In ABO blood group A and B if present together they express in offspring if present together.
Here the difference in the Rh factor only as the blood group O has no antigen on its surface therefore the most possible phenotype for the father as he has son with B negative and a daughter with O positive.
You need a dog to work with the police.What traits would you want the dog to have? Why?
During the New Imperialism nations expanded their empires to
Answer: To compete with one another
Explanation: pennfoster
Which best describes independent assortment?
In metaphase 1, chromosomes from the mother and father line up on opposite sides of the cell.
In metaphase 1, chromosomes from the mother and father line up randomly along the middle of the cell.
Portions of each chromosome switch sections in the mother’s and father’s chromosomes.
Portions of each chromosome break off and reattach to the original chromosome.
Answer:
In metaphase 1, chromosomes from the mother and father line up randomly along the middle of the cell.
Explanation:
In diploid (2n) organisms, the homologous chromosomes are the two copies of each chromosome, where one of these homologs is the chromosome from the mother, while the second one is from the father. During metaphase I, the homologous pairs of chromosomes pair together at the middle of the cell. The law of independent assortment, also known as or Mendel's Second Law, states that homologous chromosomes line up in random orientations at the metaphase plate during this period (metaphase I).
Answer:
B
Explanation:
what type of endoplasmic reticulum is involved in protein synthesis?
Answer:
rough endoplasmic reticulum
Explanation:
Answer: Rough
Explanation:
When plants die this causes what to increase?
Answer:
Explanation:
Improper watering is often the reason for sudden dying of plants. If you forgot to water for a few days, it's possible that the roots dried up. ... Root rot, a result of wet, poorly drained soil, can be occurring under the surface of the soil, even if the plant looks healthy.
How have protozoa typically been classified?
by their type of reproduction
by their symmetry
by their mode of locomotion
by their mode of nutrition
Answer:
by their mode of locomotion
Explanation:
I'm not too sure but.. :)
Which of these is an abiotic infectious agent?
● Bacteria
●Fungi
● Parasites
● Viruses
Answer:
A. Bacteria
Explanation:
Hope this helps!
Find the stoma. Explain the gas exchange process that is taking place.
please help :(
What do variations of traits have to do with mutations? give an example
What are the advantages of offspring (babies) that are derived from Asexual
reproduction?
Answer:
it takes less time to produce so more babies and no mutations
Explanation:
2. The structural and functional unit of life is (a) a cell, (b) an organ, (c) the organism, (d) a
molecule.
Answer:
A. A cell
Explanation:
Cells are the building blocks of life.
They are the biological units of organisms and are the basic structural and functional units of life.
Cells are the smallest units of life.
A.mito
B.chrom
C.clust
D.nucl
Plz help
what are the building blocks for this molecule
Answer:
All molecules are made up of tiny atoms. This happens because of the formation of bonds between the atoms, which holds them together to make a molecule.
if it works please mark me as brainliest
4 points
Objects revolving around the Sun that are too small and too numerous to
be considered planets. *
Answer:
Asteroids are rocky worlds revolving around the sun that are too small to be called planets. They are also known as planetoids or minor planets. There are millions of asteroids, ranging in size from hundreds of miles to several feet across.
1. It is a means of perpetuating the race of the species whose life span is finite.
A. Reproduction
C. Oogenesis
B. Fertilization
D. Spermatogenesis
2. It is a method of reproduction that does not invove the union of gametes.
A. Sexual Reproduction
C. Sporulation
B. Propagation
D. Asexual Reproduction
3. What do we call the process that is widely used to propagate desired varieties of trees and shrubs.
A. Grafting
C. Layering
B. Budding
D. Sporulation
4. It involves the breaking of any part of the body or the breaking up of the entire body into several
pieces.
A. Regeneration
C. Fragmentation
B. Propagation
D. Autotomy
Answer:
i have no clue
Explanation:
yes
chemical used in afb staining
Answer:
carbol fuchsin, acid alcohol, and methylene blue.
.............
What does permafrost do the the soil? (The soil in the tundra)
Answer: It makes the soil frozen and hard
Explanation: the permafrost frezzes the soil and doesnt allow any plant life to grow
which of the following changes depending on changes to gravitational forces
a. velocity
b. mass
c. shape
d.weight
Molecules can cross cell membranes from areas of low concentration to areas of high concentration b binding with carrier proteins. What is this process called? A. osmosis B. endocytosis C. active transport D. facilitated diffusion
Answer: Osmosis.
Osmosis is the movement of liquid across a membrane from an area of low solute concentration to an area of high solute concentration.
Answer:
Explanation:
A
Complete the statement to describe the calcium concentration that must be maintained in human body cells.
The calcium concentration must be greater _______
the cell than _______ the cell.
Answer:
The calcium concentration must be greater OUTSIDE
the cell than INSIDE the cell.
Explanation:
Calcium has a vital role in the body, it is necessary for:
exocytosis muscle contraction normal excitability of neurons blood coagulation building and maintaining bones and teeth enzymatic activityAnswer:
outside and inside
Explanation:
Complete the statement to describe the calcium concentration that must be maintained in human body cells.
The calcium concentration must be greater
outside
the cell than
inside
the cell.
3. Which of the following is a major functional characteristic of all organisms? (a) movement,
(b) growth, (c) metabolism, (d) responsiveness, (e) all of these.
Answer:
The correct option is E..all of these
Explanation:
This is because all living exhibit functional characteristics which are movement, respiration, nutrition, irritability, growth, excretion, respiration and death. This characteristics are indication that organisms are living things.
Growth: it is the increase in size of organisms. All living organisms grow, they increase in size , from zygote to adulthood.
Metabolism...all living organisms excreate, they absorb nutrients and remove unwanted waste products and undigested good like sweat, urine e.t.c.
Responsiveness....All living organisms respond to stimulus, they respond to external environment or change.
Which line of defense includes active immunity?
O first
O second
O third
O fourth
Answer:
The second line of defense.
Explanation:
In our bodies the second line of defense includes active immunity. It contains non-specific immune responses, but yet still contains specific responses for certain things such as inflammatory and fevers.
Third line of defense includes active immunity. The correct option is C.
What are lines of defense?The first line of defense consists of chemical and physical barriers that are constantly ready to defend the body against infection.
Your skin, tears, sputum, cilia, stomach acid, urine flow, 'friendly' bacteria, and white blood cells called neutrophils are examples of these.
The second line of defense assists administration in effectively managing risk and controls.
Organization develops multiple risk management and compliance functions to assist in the development and/or monitoring of first-line controls.
Immune cells that specifically target antigens are the third line of defense. B-cells and T-cells, all white blood cells, are immune cells that play a role in the third defense line.
Antibodies are produced by B-cells. T-cells aid in the identification of pathogenic cells and the destruction of those cells.
Thus, the correct option is C.
For more details regarding line of defense, visit:
https://brainly.com/question/15026334
#SPJ2
A tall plant (TT) is crossed with a short plant (tt). What is the genotype?
Use a punnett square to solve.
OTT: 2/4; Tt: 2/4;tt: 0/4
TT: 2/4; Tt: 1/4;tt: 1/4
TT: 0/4; Tt: 4/4;tt: 0/4
TT: 1/4; Tt: 2/4;tt: 1/4
Answer: TT: 1/4; Tt: 2/4;tt: 1/4
Explanation:
The Punnett square is a diagram that is used in the predictions of genotypes. In this scenario, if we have a tall plant (TT) is crossed with a short plant (tt), after using the Punnett square, the genotype that we will get are as follows:.
TT, Tt, Tt, tt
Therefore, the correct option is option D "TT: 1/4; Tt: 2/4;tt: 1/4
Answer: TT: 1/4; Tt: 2/4;tt: 1/4
Explanation:
Genetics Problem Solving Chapter 25
Answer:
See the answer below
Explanation:
1. Tt x Tt
TT Tt Tt tt
Assuming that T is dominant over t:
Genotype ratio = 1TT:2Tt:1tt
Phenotype ratio = 3:1
2. Rr x Rr
RR Rr Rr rr
Assuming that R is dominant over r:
Genotype ratio = 1RR:2Rr:1rr
Phenotype ratio = 3:1
3. Assuming that green (G) is dominant over the other color (g). Heterozygous green would be Gg
Gg x Gg
GG Gg Gg gg
Genotype ratio = 1GG:2Gg:1gg
Phenotype ratio = 3:1 (green ratio the other color)
4. Assuming that green (G) is dominant over the other color (g) as above:
homzygous green plant = GG; heterozygous green plant - Gg
GG x Gg
GG Gg GG Gg
Genotype ratio = 1GG:1Gg
Phenotype ratio = 100% green
5. Assuming that tall (T) is dominant over short (t)
Homzygous tall plant = TT
short plant = tt
TT x tt
Tt Tt Tt Tt
Genotype ratio = 100% Tt
Phenotype ratio = 100% tall
The process of changing the hard parts of an animal or plant carcass with minerals?
Answer:
Perminerlization should be the answer
Answer this please. Its gizmos