1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
inn [45]
3 years ago
12

During the winter months, water on the surface of a pond will typically freeze and this ice acts as an insulator for the water b

eneath it. As a result, aquatic life is able to survive during the cold winter. The reason that this water expands upon freezing is due to
Biology
2 answers:
damaskus [11]3 years ago
5 0

Answer:

when the water freezes, its molecules are perfectly ordered and separated from each other at the same distance. This generates, that in the ice there are less water molecules in a certain volume, that is, they occupy more space.

The ice (frozen water) when expanding, causes its density to become lower than in a liquid state. For this reason the ice floats in the water and allows life under frozen lakes.

Oduvanchick [21]3 years ago
4 0
Hydrogen bonding allows the water to expand
You might be interested in
What do some ppl call space? high energy/ final frontier/ open sky/ vast universe
mihalych1998 [28]

Answer:

Final Frontier

Explanation:

Space is the "Final Frontier"

3 0
2 years ago
A patient's HDL, LDL, and triglyceride levels are 62, 77, and 60, respectively. What is the patient's total cholesterol score? S
Len [333]

Answer:

Total cholesterol score is 199

199 is high cholesterol score especially as it very close to 200. The patient should adopt diets that do not include high cholesterol food

Explanation:

a. Firstly, we want to calculate the patient’s total cholesterol score.

To get this, we use a mathematical approach.

Mathematically;

the total cholesterol score = HDL + TDL + Triglyceride = 62 + 77 + 60 = 199

The patient’s total cholesterol score is 199

b. As a doctor, I will advice the patient on the status of these measurements. Using the scale of cholesterol level, a measurement of total cholesterol = 200 represents a high cholesterol level. Since 199 is very close to 200, the patient is at a risk of high cholesterol levels and thus needs a dietary change.

8 0
3 years ago
The normal shape of an enzyme is as shown in structure A. If the enzyme's shape changes to that shown in structure B, what are t
Varvara68 [4.7K]

Answer:

There is no image showing the shape of an enzyme, however, the question can still be answered based on basic understanding. The answers are;

- Less binding of substrate

- won't follow the lock-and-key pattern of enzyme binding

Explanation:

An enzyme is a biological catalyst that regulates the rate of chemical reactions in living systems. Enzymes are proteinous in nature and every protein is made up of an amino acid sequence. The amino acid sequence forms a three-dimensional shape that determines the functionality of the enzyme.

Enzymes catalyze reactions by binding to their substrates in a lock and key pattern. This makes enzymes substrate-specific. If the enzyme's normal shape changes, the following will occur:

- Less binding of substrate

- won't follow the lock-and-key pattern of enzyme binding.

8 0
3 years ago
Chloe is developing a model of photosynthesis. The first part of the model is shown below.
marin [14]
I believe the answer for this would be B. Just using the process of elimination knocks out D and A, and plants make carbs not protein during photosynthesis :)
5 0
3 years ago
Read 2 more answers
Which of the following does NOT describe the macronucleus of a paramecium?
Rom4ik [11]
The answer is letter D. The macronucleus is not exchanged during conjugation. <span>It normally contains the working duplicates/copies of genes necessary to support an enormous cell. Macronucleus is formed by a direct division of the polyploid nucleus right after conjugation then followed by series of internal gene replication that is not oftenly occurring in micronucleuse.</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • Photosynthesis lab gizmo<br> answer key??
    12·2 answers
  • Predict a potential outcome of a mutated MAD protein
    9·1 answer
  • Meiosis takes place in the of most organisms.
    11·2 answers
  • Why is it so imporntant to have only one set of chemical symbols in the world?p
    13·1 answer
  • Before cell reproduction or mitosis can proceed, what is the correct sequence of steps that must first occur?
    7·1 answer
  • How do the circulatory and respiratory systems work together for gas exchange?
    13·2 answers
  • Assume that a cell is carrying out its day-to-day activities. At one point, the nucleotides GAT are paired with the nucleotides
    13·1 answer
  • A heterotrophic multicellular organism that does not have cell walls is called a(n) _______.
    5·1 answer
  • According to the food chain, how would an increase in the toad population most likely affect the other population
    7·1 answer
  • Cho trâu đực đen 1 giao phối với trâu cái đen 2. Năm đầu sinh được nghé đen 3 và năm sau sinh được nghé xám 4.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!