Answer: pollen
Explanation: The anthers bear the pollen grains which contains the male gamete(sperm).
What has been an advantage of producing transgenic plants?
Answer:
The main advantages of transgenic plants include larger yield, resistance to diseases and pests and capable of growing under stressful conditions, while their main disadvantages include allergic reactions, emergence of super-pests and loss of biodiversity.
Suggest why redox indicators highlight aerobic respiration.
Answer:
Cellular respiration involves many reactions in which electrons are passed from one molecule to another. Reactions involving electron transfers are known as oxidation-reduction reactions (or redox reactions).
What is the function of DNA in a cell?
A regulating the movement of nutrients
B Carrying genetic material
C Providing energy for activities
D reproducing sex cells
Answer:
The function of DNA in a cell is for Carrying genetic material
What is the function of DNA in a cell?
[tex]{ \bf{ \underbrace{Answer :}}}[/tex]
[tex]\sf\purple{B.\:Carrying \:genetic\: material.}[/tex] ✅
......................................................MORE:- DNA stands for deoxyribonucleic acid.It is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).DNA is the genetic material that is passed from parent to offspring.......................................................[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]
Which description accurately describes the cell membrane?
a. a single permeable layer of phospholipids that have hydrophobic heads and hydrophilic tails
b. a semi-permeable double layer of phospholipids that have hydrophilic heads and hydrophobic tails
c. a single permeable layer of phospholipids that have hydrophilic heads and hydrophobic tails
d. a semi-permeable double layer of phospholipids that have hydrophobic heads and hydrophilic tails
e. a barrier of polypeptides that prevents molecules from entering or leaving the cell
Answer:
b. a semi-permeable double layer of phospholipids that have hydrophilic heads and hydrophobic tails
Explanation:
B is correct as the cell membrane is selectively semi-permeable. It is selectively semi-permeable because this quality allows it to control what can and can't enter the cell, and how it does so.
The cell membrane also has a phospholipid bi-layer comprised of a double layer of phospholipids which have hydrophilic head and hydrophobic tails. This is because the heads are made of phosphate and are polar and are therefore attracted to water (hydrophilic), while the tails are made of lipids (i.e. fats, oils) which do not mix with water and are therefore hydrophobic.
The properties of each phospholipid is also why they form the double layer structure, the hydrophilic heads naturally face outwards into the water and protect the hydrophobic tails on the inside.
Hope this helped!
Draw a diagram of the gray wolf food web in Yellowstone National Park. Include at least three levels of predator/prey relationships as well as at least one example of a consumer, producer, and decomposer.
What is this asking me? Can someone please explain this better to me?
Answer:
You need to draw a diagram of the gray wolf food web in Yellowstone National Park. That includes at least one example of a consumer, producer, and decomposer.
Explanation:
I'm sorry if this doesn't help.
If the frequency of the p allele is 63 in the population then what is the frequency of the q allele?
040
0 55
0 37
O 137
Which of the following nutrients is organic?
iron
water
sodium
protein
Answer:
Protein is the answer
Explanation:
Proteins are considered organic molecules because they are made up of carbon atoms with hydrogen, oxygen and nitrogen attached
Plants are the primary source of energy for
decomposers
predators
consumers
all of the above
PLS HELP ME
no links
Answer:
0% RR 100%Rr 0% rr is the answer
Answer:
RR is the and sorry if it is incorrect
Question 3 What is a characteristic of consumers?
Psychographic characteristics of consumers include interests, activities, opinions, values and attitudes.A company may better understand consumer opinions and attitudes after conducting a focus group, and can use that information to tailor advertising or marketing campaigns.
Explanation:
PLEASE HELP ME ON BOTH QUESTIONS ASAP!!!! GIVING 10 POINTS!!!
What is the relationship between DNA, a gene, and a chromosome?
A. A chromosome contains hundreds of genes, which are composed of DNA
B. A chromosome contains hundreds of genes, which are composed of protein
C. A gene contains hundreds of chromosomes, which are composed of protein
D. A gene contains hundreds of chromosomes, which are composed of DNA
Answer:
A
Explanation:
The correct option is (a). Chromosomes are long thread-like structures present in the nucleus of a cell which contains hereditary information of the cell (genes). Genes are the part of a chromosome and made up of DNA.
Answer:
A
Explanation:
chromosomes contain genes and Gene's are made of dna.
Pls help asap which property of water is the most direct cause within the ? ) Water is a versatile solvent Water is a polar molecule Water a high heat capacity Water has a high surface tension
Answer:
A.
Explanation:
A 20.0 gram sample of a certain radioisotope decays over a
period of 19.2 hours. After that time, only 2.50 g of the isotope
remains. Calculate the half-life.
quantity of the substance remaining = initial quantity of the substance * (.5)^(time elapsed/half life of the substance)
2.50 = 20 * (.5)^(19.2/x)
The half-life period of the given sample of the radioisotope is equal to 6.41 hours.
What is the half-life period?The half-life of a radioactive substance is defined as the time that is required to reduce the original quantity of a radioactive element to half after decay.
Half-life of a radioactive element is the characteristic of the element and does not depend upon the initial amount of the radioactive substance.
Given, the original amount of the radioisotope, N₀ = 20.0 g
The remaining amount of the radioisotope, N = 2.50 g
The time for which decay occurs, t = 19.2 hours
Consider that k is the rate constant of the decay of radioisotope,
[tex]k =\frac{2.303}{t} \times log \frac{N_0}{N}[/tex]
[tex]k =\frac{2.303}{19.2} log \frac{20}{2.50}[/tex]
k = 0.108 hr⁻¹
The half-life time of radioisotope can be calculated from the below mentioned formula:
[tex]t_{\frac{1}{2}} =\frac{0.693}{k}[/tex]
[tex]t_{\frac{1}{2}} =\frac{0.693}{0.108}[/tex]
[tex]t_{\frac{1}{2}} =6.41 hrs[/tex]
Therefore, the half-life period of the given sample of the radioisotope will be to 6.41 hours.
Learn more about the half-life period, here:
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Identifying Cloud Types
Which type of cloud is shown in the image?
O cirrus
O cumulus
O stratus
O fog
The answer is c
Is stratus
Answer:
[tex] \huge\red{\boxed{\mathfrak{Hello}}}[/tex]
Huh? You have already given the answer.......Anyways, the attached picture is an example for a stratus cloud ☁️.
Answer:
c :)
Explanation:
How does the body structure evolve for animals as they transmit between the two environments?
Answer:
Biologists believe that new species evolve from existing species by a process called natural selection. ... Organisms that inherit that favorable new gene are likely to become more abundant than others of the species. Sometimes the population of a species becomes separated into two areas, by geography or by climate.
Explanation:
4. What advantage do plankton gain by storing lipids within their bodies?
a. It makes them less dense than water, thus aiding in buoyancy.
b. It forms air pockets that makes them more buoyant.
c. It allows them to store large amounts of energy.
d. It makes their cells heavier so they sink into the water.
e. It increases their density so they sink into the water.
Answer:
Option A, It makes them less dense than water, thus aiding in buoyancy
Explanation:
Lipids stored with in the body of planktons make them capable to float in water against the buoyancy force of water in the down ward direction by reducing the overall density of the planktons. Hence, option A is correct
4
Select the correct answer.
Why does temperature decrease with higher altitude?
A.
Air is held strongly together by gravity, so there is less heat transfer.
B.
Air density is lower, so there is less heat transfer.
C.
Air density is higher, so there is less heat transfer.
D.
Air pressure is higher, so there is less heat transfer.
Answer:
air density is lower, so there is less heat transfer
Explanation:
Radiation is absorbed by the ground of Earth and this heats the surroundings along with tropospheric air through conduction and convection process. ... Thus, we can conclude that temperature decrease with higher altitude as air density is lower, so there is less heat transfer.
Answer:
The correct answer would be B.
Air density is lower, so there is less heat transfer.
I got this right on a test. I hope this helps!
what has the most biodiversity: tundra, taiga, temperature forest, tropical rain forest, grassland, or desert?
Which Texas ecoregion described below was formed due to weathering and erosion? A Edwards Plateau - home to rare organism that live in canyons B. Piney Woods - high density of vegetation, pines, oaks, and croplands with nutrient rich soil CC Crosstimbers - high concentration of trees, plains and parries with soil that drains water easily D Post Oak Savannah - transitional area of plant life ranging from grasslands to forests with fertile soll can yi
Answer:
d
Explanation:
because
What makes a fossil an index fossil
A.The fossil does not contain trance of DNA
B. The fossil Connor be dated using radioactive dating
C. The fossil comes from an Anaimal that did not evolve
D the fossil was formed only during certain shot time period
Answer:
A
Explanation:
Part C Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP. In this way, luciferase can test for the presence of life. The coupled reactions are 1.2.luciferin+O2ATP⇌⇌oxyluciferin+lightAMP+PPiΔG∘=−31.6 kJ/mol If the overall ΔG∘ of the coupled reaction is -4.80 kJ/mol , what is the equilibrium constant, K, of the first reaction at 6 ∘C ?
Answer:
K = 9.620 × 10⁻⁶
Explanation:
From the given information:
Temperature T= 6° C
= (273 + 6)K
= 279 K
The correct and well presentation of the reactions are:
1. [tex]Luciferin + O_2[/tex] ⇆ oxyluciferin + light ΔG₁°
2. ATP ⇄ AMP + PP[tex]_i[/tex] ΔG₂° = -31.6 kJ/mol
The overall ΔG° = -4.80 kJ/mol
Let's first determine the ΔG₁° for the equation (1)
ΔG° = ΔG₁° + ΔG₂°
- ΔG₁° = - ΔG° + ΔG₂°
ΔG₁° = ΔG° - ΔG₂°
ΔG₁° = ( -4.80 - (-31.6) ) kJ/mol
ΔG₁° = 26.8 kJ/mol
Using the formula:
ΔG° = -RTIn K
[tex]In \ K =\dfrac{-\Delta G^0}{RT} \\ \\ log \ K = -\dfrac{\Delta G^0}{2.303RT}[/tex]
[tex]log \ K = -\dfrac{\Delta G_1^0}{2.303RT} \\ \\ log \ K = -\dfrac{26.8 \times 10^3 \ J/mol}{2.303\times 8.314 \ J/mol/K \times 279 \ K} \\ \\ log \ K =- 5.017[/tex]
K = antilog (-5.017)
K = 9.620 × 10⁻⁶
Is there an unconformity? ___________
2. 5 is a _____________________ ______________.
Answer:
what is short sightedness?
the word root that means lung is
Answer:
I think is Pulmonarycorrect me if I'm wrong
NEED THIS BY TODAY!! Please.
Answer:
AACUUG
Explanation:
why animals need to move quickly
Answer:
Animals move for a variety of reasons, such as to find food, a mate, a suitable microhabitat, or to escape predators. For many animals, the ability to move is essential for survival and, as a result, natural selection has shaped the locomotion methods and mechanisms used by moving organisms.
pls Mark me as brainliest trust me..
Organisms that use energy to control their internal conditions are
Answer:
regulators
Explanation:
regulators use their metabolism to control their internal environment
2. When an object gets warmer it is:
a. loosing energy
b. keeping the same energy
c. gaining energy
Choose one correct answer.''
This paramecium has a nucleus and is comprised of one cell. Which terms best describe this organism?
Answer: The term that best describes this organism is that it's a UNICELLULAR PROTISTA.
Explanation:
Unicellular organisms are that are made up of just one cell. They are also called single- celled organisms. Examples of unicellular organisms include: Amoeba, chlamydomonas and paramecium.
The paramecium is a protist which is SINGLE-CELLED and is made up of eucaryotic cells in which the cell structure is complex with a well-defined NUCLEUS.
The structure of this organism helps it to survive in its environment. It has cilia that helps it move food into its gullet.
The food vacuole circulate along a definite path in the cytoplasm. The anterior and posterior contractile vacuole, with radiating channels draining into them, helps to get rid of excess water from the body. The food vacuoles circulate along a definite path in the cytoplasm. The anterior and posterior contractile vacuole, with radiating channels draining into them, helps to get rid of excess water from the body.
The NUCLEUS is used by the organism for sexual reproduction. This occurs in a process known as conjugation whereby the whole organism pair with another similar whole organism and exchange their nuclei.
What process releases
the phosphate minerals?
Answer: weathering
Explanation: