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hammer [34]
3 years ago
8

Two strands of DNA are joined to each other or held together by

Biology
2 answers:
alekssr [168]3 years ago
4 0
This would be called hydrogen bonds since they are weak in terms of the strands unwinding to be continually read
skad [1K]3 years ago
3 0

two strands of DNA are held together by weak hydrogen bonds.

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Sharks and other predators do not normally eat plants however they do receive some energy from plants how is this possible
Leya [2.2K]
Animals get their energy by eating food.
Some animals eat plants. These are called herbivores.
They can also be known as primary consumers.
Carp is a herbivorous fish.


Nutrition – being able to get energy out of food ... Plants get their energy from the sun. ... Some animals eat both plants ... Predators. Predators eat other animals. Sharks eat fish so they are.

4 0
3 years ago
Greg wants to build a tree house. He wants the house to last for a long time and to not be broken down by rain, snow, and wind.
bulgar [2K]

Build several models of his tree house out of different materials, and see which model holds up best to wind, water, and ice.

4 0
3 years ago
Read 2 more answers
​the bmi is very valuable in helping muscular athletes determine their health risks.
Alenkasestr [34]

The answer in this statement is false because the BMI is not the real basis or considered to be more valuable in determining the health risk of a muscular athlete as this only determines their mass and height of the person.

5 0
3 years ago
A woman who is a carrier for colour blindness (X-linked recessive) has children with a man who has normal colour vision. A. What
viva [34]

Answer:

Explanation:

The Genotype of the  woman is XCbXN

The man XNY

Since the allele for the color blindness is carried on one of the X -chromosomes of the  carrier mother, then  the male children will be color blind or carrier deopending on the defective gene they inherited. Since they will receive the defective or normal  allele from the  mothers,but the female will carriers or normal because they will inherit either defective allele or normal allele from the mother,but normal  X allele from the father.

Assuming the colorbind gene was inherited by One of the boys, and the girls take the defective genes

1. XNY vs XCbXN.Then the one of the  boys will be colorblind  and the one of  girls will be carriers. XNXCb, XNXN, XCbY,XNY  50 %

2.If the two boys take the effective genes from the mothers. and none of the girls take the defective alelle

Then the two boys will be colorblind and the girls will be carrries XcbY,XcbY and XNXN XNXN.(normal girls).

The proportions that will be  the females  since the girls can only take the defective allele from one of the normal and defective allele from the mother. Assuming the girls  take the defective allele from the mothers and take normal from the father,they will all  be carriers,since the X of the father is normal.

They can not have a color blind girl.Since the father is normal It takes two colorblind X-chromosome to give a girl.

5 0
3 years ago
During periods of intense exercise, cells do not receive enough oxygen to perform the normal process of aerobic cellular respira
Wewaii [24]

Answer: for me the best option is D.

Explanation: lets explain this.

Cellular respiration begins with a process that divides the glucose within the cells making it readily available as a source of energy. This process can occur without oxygen (anaerobic respiration) or in the presence of oxygen (aerobic respiration). Anaerobic respiration generates more excess waste (lactate) than aerobic . Besides, high levels of lactate build within the muscle cells. Excess lactate slows the cellular respiratory process and is experienced as a burning sensation in the muscles if exercise continues.

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3 years ago
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