Answer:
What is c. Chromosomes line up single file, separate, forming haploid cells
In meiosis I, chromosomes in a diploid cell resegregate, producing four haploid daughter cells. It is this step in meiosis that generates genetic diversity. DNA replication precedes the start of meiosis I. During prophase I, homologous chromosomes pair and form synapses, a step unique to meiosis.
Please allow me to know if I helped by clicking thank you, rating or giving me brainliest.
Miss Hawaii
Answer:
C
Explanation:
because one parent divide to give two daughter cell
What happens when the most limiting
factor in an ecosystem is removed?
A. population growth increases
B. neutral population growth
C. population growth ceases
D. nothing happens
Answer:
A. Population growth increases
Explanation:
When the growth is no longer being limited by a limiting factor, the population increases because the factor that limits the growth is gone.
In a crosstab, the cells show:
Answer:
The cells in a crosstab show summary data for the corresponding row and column, based on a measure and a summary function. The simplest crosstab is a frequency matrix, such as the following example, which shows the count of pets (measure) by gender (column) and species (row). Example of a simple crosstabExplanation:
What is the best definition of sexual selection? Group of answer choices Selection that results in any type of difference between the sexes. Selection related to any aspect of offspring production. Selection on the form and structure of gametes. Selection that arises as a consequence of competition for access to mates.
Answer:
Selection that arises as a consequence of competition for access to mates
Explanation:
Sexual selection is how somenone will choose the best partner to breed, give birth and raise the next generation
How does the circulatory system work at the organ level?
The heart pumps the blood.
Blood cells carry nutrients.
Nutrients are delivered throughout the body.
Cardiac muscle contracts.
Answer:
THE BLOOD CELLS CARRY NUTRIENTS
Explanation:
Answer:
The heart pumps the blood.
Explanation:
I took the quiz and I used the other persons answer and got it wrong. The right one is the heart pumps the blood
True or false the nucleus makes the cells DNA
Answer:
true
Explanation:
Answer:
Hope that helps
Explanation:
The nucleus (plural, nuclei) houses the cell's genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins. Inside the nucleus, chromatin (DNA wrapped around proteins, described further below) is stored in a gel-like substance called nucleoplasm.
How Enzymes Function Enzymes are biological catalysts. They can increase the rate of chemical reactions as much as a millionfold by lowering the energy barrier of a reaction.
Part A - Enzymes and activation energy The graph presents three activation energy profiles for a chemical reaction (the hydrolysis of sucrose): an uncatalyzed reaction, and the same reaction catalyzed by two different enzymes. Rank these by reaction rate, as measured by the rate of product formation (from the most product formed to the least product formed). To rank items as equivalent, overlap them.
Part B - Factors that affect enzymes Complete this vocabulary exercise relating to enzymes. Match the words in the left-hand column to the appropriate blank in the sentences in the right-hand column. HelpReset cofactor specific denatured substrate active site catalyst complex
1. An enzyme is when it loses its native conformation and its biological activity.
2. An enzyme is considered a because it speeds up chemical reactions without being used up.
3. An enzyme is considered because of its ability to recognize the shape of a particular molecule.
4. A , such as a vitamin, binds to an enzyme and plays a role in catalysis.
5. When properly aligned, the enzyme and substrate form an enzyme-substrate (ES) .
6. A substrate binds to an enzyme at the , where the reaction occurs.
7. In a catalyzed reaction a reactant is often called a _________.
Answer:1. An enzyme is denatured when it looses its native conformation and its biological activity. Enzyme is a protein and at high temperatures, the shape of the proteins is altered, preventing it from its function. In addition change in pH above optimal may also cause denaturation of enzymes inactive.
2. An enzyme is considered a catalyst because it speeds up chemical reaction without being used up. A catalyst is a substance that speeds up chemical reactions by reducing the activation energy of the reactants, they are not consumed during the reactions. Enzyme are biochemical catalysts that speeds up chemical enzymatic reactions without being consumed just like normal catalysts.
3. An enzyme is considered specific because of its ability to recognize the shape of a particular molecule. One property of enzyme is that they are substrate specific and will act on specific substrate, others will act on a specific type of chemical bond or functional group, while others will catalyze only one reaction (absolute specificity)
4. A cofactor such as a vitamin, binds to an enzyme and plays a role in catalysis. Cofactors are mostly metal ions (such as Zn ions or iron ions) or coenzymes are inorganic and organic chemical that aid the activity of enzymes. Coenzymes are non protein molecules mostly vitamins or vitamins derivatives that enhance enzyme activity.
5. When properly aligned, the enzyme and substrate form an enzyme-substrate (ES) complex. Es complex is the intermediate formed when a substrate molecule interacts with the active sites of an enzyme. After the formation of the complex then the substrate undergoes a chemical reaction and is converted to product.
6. A substrate binds to an enzyme at the active-site, where the reactions occurs. Active sites is a region on the enzyme where substrate molecules bind and undergoes a chemical reaction where it is converted to product. These sites contain the binding site and the catalytic site.
7. In catalyzed reaction, a reactant is often called a substrate. Substrate molecule is the substance that is acted upon by an enzyme and is converted to a product. The substrate forms an interaction with the binding site of the active site then the catalytic site of the active site converts the substrate to a product during catalysis.
1. Denatured
2. Catalyst
3. Specific
4. Cofactor
5. Complex
6. Active Site
7. Substrate
The induced fit model states an substrate binds to an active site and both change shape slightly, creating an ideal fit for catalysis. When an enzyme binds its substrate it forms an enzyme-substrate complex. ... The enzyme will always return to its original state at the completion of the reaction.
"The active site of the enzyme has a complementary rigid structure" belongs to the key and lock system
Explanation:
Which amino acids would be found in the mutated proteins?
Answer:
Amino acid sequence: Valine- Threonine- Aspartic acid- Cysteine- Serine- Cysteine
Explanation:
The mRNA sequence is read in a group of three nucleotides called CODON. Each codon specifies a particular amino acid. According to this question, using the genetic code table, the given DNA sequence is as follows:
DNA: CAT- TGG- CTA- ACG- TCG- ATA- ATC- GTC- GGT- AC
RNA = GUA- ACC- GAU- UGC- AGC- UAU- UAG- CAG- CCA- UU
It’s sad when you realize you aren’t as important to someone as you thought you were.
if a red plant is crossed with a white plant and the offspring is pink, what is it called ?
Answer:
Incomplete dominance is an example of a non-mendelian trait (doesn't follow the genetic rules established by Gregor Mendel). When two parents mate and produce offspring, the offspring is a blend of the two parents. So, a red flower and a white flower would make a pink flower.
We used a microscope marked ×10 on the eyepiece and ×25 on the objective to observe an object that is 0.5 mm long. How long will this object be when observed under the microscope?
Answer: 2500 i think don't count me on it though sorry if it is wrong.
Explanation:
DNA synthesis involves unwinding two strands of parent DNA, copying each strand to synthesize complementary strands, and release of parent and daughter DNA. Which of the following accurately describes this process. Is this Anabolic or catabolic reaction
Answer:
This is an anabolic process.
Explanation:
DNA replication involves unwinding two strands of parent DNA, copying each strand to synthesize complementary strands, and releasing the parent and daughter DNA. Thus, it is an anabolic process.
Vì sao lá cây lại có màu xanh
what occurs if resources within a population are limited
Answer:
Explanation:
As resources are depleted, population growth rate slows and eventually stops,This is known as logistic growth.
Explain why energy from the sun is essential for the cycling of nutrients
Answer:
light energy is needed in photosynthesis or else the plant will die. no light no starch no starch no life rip
2. What is the name of the site on a chloroplast where half of the reactions in photosynthesis occur?
thylakoid membrane
cell wall
stroma
grana
Answer:
thylakoid
Explanation:
Hope this helps
Type your response in the box.
Explain why it's important for scientists to study the Sun. List at least two challenges researchers face when
examining Earth's nearest star.
Answer:
its very important in our day to day life
Explanation:
the sun is our closest star and there are many theorys about it that need to be proven right or wrong
Understanding the Sun will help us better understand stellar life cycles and the origins of our solar system. The cost of the equipment needed to research the Sun is prohibitive. The Earth's distance from the Sun must also be considered, as well as how equipment must resist the Sun's intense heat.
Please give brainliest.
If a bee is flying in a circle at a constant speed Is the bee acceleratiy
Answer:
If a bee is flying in a circle at a constant speed, is the bee accelerating? YES, the bee is accelerating. Because acceleration is the change in velocity per unit of time, and the bee is constantly changing direction, the bee is also constantly changing velocity and is therefore accelerating.
Explanation:
Hope it helps
Answer:
Yes it is accelerating
Explanation:
I don't know if you mean accelerating but yes (In mechanics, acceleration is the rate of change of the velocity of an object with respect to time.)
How does biodiversity affect humans?
Biodiversity affects humans by: underpins the health and has a direct impact on all of our lives. To summarize reduced biodiversity means millions of people face a future where food supplies are more vulnerable to pests and disease, and where fresh water is in irregular or short supply. For humans that is worrying.
Scientists set up ___
and then record
to be tested during an experiment,
And then record ___ as they conduct the experiment
Answer:
1. a hypothesis
2. the results
Explanation:
aproximately how many HeLa cells are there?
Over the course of 26 years, 600,000,000 HeLa cells have been produced in my laboratory each week, for a total of 800 billion cells. That is a lot of cells, but it's nothing compared with the total number of cells – approximately 100 trillion – that make up a human.
What is the most complex level of organization in living things
Answer:
the biosphere
Explanation:
The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
dịch kẽ còn được gọi là dịch gì
Answer:
Chất lỏng được tìm thấy trong các khoảng trống xung quanh các tế bào. Nó xuất phát từ các chất bị rò rỉ ra khỏi mao mạch máu (loại mạch máu nhỏ nhất). Khi chất lỏng kẽ mới được tạo ra, nó sẽ thay thế chất lỏng cũ chảy ra các mạch bạch huyết. Khi nó xâm nhập vào các mạch bạch huyết, nó được gọi là bạch huyết. Còn gọi là dịch mô.
Explanation:
Tôi hy vọng nó sẽ giúp. ; )
HELP PLEASE!! it’s about nutrition!!
Answer:
I think it's (C) I had a question about this awhile back. But it's been awhile so I could be wrong
Have a great day!
Explanation:
Prokaryotic cells lack which of the following?
Answer:
Prokaryotic cells lack a nucleus and other organelles
Explanation:
In the water cycle, at some point water vapor (gas) turns back into a liquid, we
call this precipitation. The liquid is typically in the form of rain, snow, or hail.
Which of the following properties is the reasoning behind the formation of a rain?
(Multiple Choice)
a. Universal Solvent
b. Cohesion
C. Adhesion
d. Surface Tension
e. Homeostasis
How can antibiotic resistance be minimized?
Explanation:
There are many ways that drug-resistant infections can be prevented: immunization, safe food preparation, handwashing, and using antibiotics as directed and only when necessary. In addition, preventing infections also prevents the spread of resistant bacteria.
A type of agriculture in which the farmers focus on growing enough food to feed
themselves and their families is known as:
Subsistence agriculture.
Market agriculture.
Mechanized agriculture.
Industrial agriculture.
Niche agriculture.
Answer:
subsistence agriculture
Explanation:
The land is limited, cultivation systems are basic, and there is not enough harvest to sell.
Which option identifies the components of the crop nutrient management plan in effect in the following scenario?
A grower managing a particular field first grows a crop of alfalfa early in the season, which is then tilled into the soil as
green compost, accomplishing both nitrogen fixation and the addition of organics.
O recommended timing and recommended rates
O crop sequence, and sources and forms of nutrients
crop sequence and recommended methods
this is for my plant systems class
O estimated yield, and sources and forms of nutrients
Answer:
Recommended timing and recommended rates (assuming correct)
Explanation:
It may mean adding manure or compost to enrich the soil structure.
a __ error occurs when sister chromatids fail to separate properly during meiosis. a)frameshift b)disjunction c)nondisjunction d)genetic
The structure that carries urine into the renal pelvis
A. Loop of henle
B. Collecting duct
C. Renal cortex
D. Renal vein
Answer:
collecting duct
Explanation:
The last part of a long, twisting tube that collects urine from the nephrons (cellular structures in the kidney that filter blood and form urine) and moves it into the renal pelvis and ureters.
I hope this is correct the other ones didn't quite match up.
